diff --git a/Android.mk b/Android.mk
index e352bc7..1f3210f 100644
--- a/Android.mk
+++ b/Android.mk
@@ -288,7 +288,6 @@
 	core/java/android/view/accessibility/IAccessibilityManagerClient.aidl \
 	core/java/android/view/IApplicationToken.aidl \
 	core/java/android/view/IAppTransitionAnimationSpecsFuture.aidl \
-	core/java/android/view/IAssetAtlas.aidl \
 	core/java/android/view/IDockedStackListener.aidl \
 	core/java/android/view/IGraphicsStats.aidl \
 	core/java/android/view/IInputFilter.aidl \
diff --git a/compiled-classes-phone b/compiled-classes-phone
index 221d687..6214306 100644
--- a/compiled-classes-phone
+++ b/compiled-classes-phone
@@ -1168,14 +1168,6 @@
 android.drm.DrmManagerClient$OnInfoListener
 android.drm.DrmOutputStream
 android.drm.DrmSupportInfo
-android.graphics.Atlas
-android.graphics.Atlas$Entry
-android.graphics.Atlas$Policy
-android.graphics.Atlas$SlicePolicy
-android.graphics.Atlas$SlicePolicy$Cell
-android.graphics.Atlas$SlicePolicy$MinAreaSplitDecision
-android.graphics.Atlas$SlicePolicy$SplitDecision
-android.graphics.Atlas$Type
 android.graphics.Bitmap
 android.graphics.Bitmap$1
 android.graphics.Bitmap$CompressFormat
@@ -4264,9 +4256,6 @@
 android.view.IAppTransitionAnimationSpecsFuture$Stub$Proxy
 android.view.IApplicationToken
 android.view.IApplicationToken$Stub
-android.view.IAssetAtlas
-android.view.IAssetAtlas$Stub
-android.view.IAssetAtlas$Stub$Proxy
 android.view.IDockedStackListener
 android.view.IDockedStackListener$Stub
 android.view.IDockedStackListener$Stub$Proxy
diff --git a/core/java/android/view/IAssetAtlas.aidl b/core/java/android/view/IAssetAtlas.aidl
deleted file mode 100644
index edce059..0000000
--- a/core/java/android/view/IAssetAtlas.aidl
+++ /dev/null
@@ -1,54 +0,0 @@
-/**
- * Copyright (c) 2013, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.view;
-
-import android.view.GraphicBuffer;
-
-/**
- * Programming interface to the system assets atlas. This atlas, when
- * present, holds preloaded drawable in a single, shareable graphics
- * buffer. This allows multiple processes to share the same data to
- * save up on memory.
- *
- * @hide
- */
-interface IAssetAtlas {
-    /**
-     * Indicates whether the atlas is compatible with the specified
-     * parent process id. If the atlas' ppid does not match, this
-     * method will return false.
-     */
-    boolean isCompatible(int ppid);
-
-    /**
-     * Returns the atlas buffer (texture) or null if the atlas is
-     * not available yet.
-     */
-    GraphicBuffer getBuffer();
-
-    /**
-     * Returns the map of the bitmaps stored in the atlas or null
-     * if the atlas is not available yet.
-     *
-     * Each bitmap is represented by several entries in the array:
-     * long0: SkBitmap*, the native bitmap object
-     * long1: x position
-     * long2: y position
-     * long3: rotated, 1 if the bitmap must be rotated, 0 otherwise
-     */
-    long[] getMap();
-}
diff --git a/core/java/android/view/ThreadedRenderer.java b/core/java/android/view/ThreadedRenderer.java
index ce390a2..f71459e 100644
--- a/core/java/android/view/ThreadedRenderer.java
+++ b/core/java/android/view/ThreadedRenderer.java
@@ -916,7 +916,6 @@
             mInitialized = true;
             initSched(context, renderProxy);
             initGraphicsStats(context, renderProxy);
-            initAssetAtlas(context, renderProxy);
         }
 
         private static void initSched(Context context, long renderProxy) {
@@ -944,32 +943,6 @@
                 Log.w(LOG_TAG, "Could not acquire gfx stats buffer", t);
             }
         }
-
-        private static void initAssetAtlas(Context context, long renderProxy) {
-            IBinder binder = ServiceManager.getService("assetatlas");
-            if (binder == null) return;
-
-            IAssetAtlas atlas = IAssetAtlas.Stub.asInterface(binder);
-            try {
-                if (atlas.isCompatible(android.os.Process.myPpid())) {
-                    GraphicBuffer buffer = atlas.getBuffer();
-                    if (buffer != null) {
-                        long[] map = atlas.getMap();
-                        if (map != null) {
-                            nSetAtlas(renderProxy, buffer, map);
-                        }
-                        // If IAssetAtlas is not the same class as the IBinder
-                        // we are using a remote service and we can safely
-                        // destroy the graphic buffer
-                        if (atlas.getClass() != binder.getClass()) {
-                            buffer.destroy();
-                        }
-                    }
-                }
-            } catch (RemoteException e) {
-                Log.w(LOG_TAG, "Could not acquire atlas", e);
-            }
-        }
     }
 
     void addFrameMetricsObserver(FrameMetricsObserver observer) {
@@ -984,7 +957,6 @@
 
     static native void setupShadersDiskCache(String cacheFile);
 
-    private static native void nSetAtlas(long nativeProxy, GraphicBuffer buffer, long[] map);
     private static native void nSetProcessStatsBuffer(long nativeProxy, int fd);
     private static native int nGetRenderThreadTid(long nativeProxy);
 
diff --git a/core/jni/Android.mk b/core/jni/Android.mk
index 4c6350b..a7b0fe9 100644
--- a/core/jni/Android.mk
+++ b/core/jni/Android.mk
@@ -19,6 +19,14 @@
     LOCAL_CFLAGS += -DENABLE_CPUSETS
 endif
 
+# TODO: Linear blending should be enabled by default, but we are
+# TODO: making it an opt-in while it's a work in progress
+# TODO: The final test should be:
+# TODO: ifneq ($(TARGET_ENABLE_LINEAR_BLENDING),false)
+ifeq ($(TARGET_ENABLE_LINEAR_BLENDING),true)
+    hwui_cflags += -DANDROID_ENABLE_LINEAR_BLENDING
+endif
+
 LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
 
 LOCAL_CFLAGS += -DU_USING_ICU_NAMESPACE=0
diff --git a/core/jni/android/graphics/Bitmap.cpp b/core/jni/android/graphics/Bitmap.cpp
index e797321..9cfe153 100755
--- a/core/jni/android/graphics/Bitmap.cpp
+++ b/core/jni/android/graphics/Bitmap.cpp
@@ -693,7 +693,8 @@
     }
 
     SkBitmap bitmap;
-    bitmap.setInfo(SkImageInfo::Make(width, height, colorType, kPremul_SkAlphaType));
+    bitmap.setInfo(SkImageInfo::Make(width, height, colorType, kPremul_SkAlphaType,
+            GraphicsJNI::defaultColorSpace()));
 
     PixelRef* nativeBitmap = GraphicsJNI::allocateHeapPixelRef(&bitmap, NULL);
     if (!nativeBitmap) {
@@ -794,7 +795,8 @@
         // Otherwise respect the premultiplied request.
         alphaType = requestPremul ? kPremul_SkAlphaType : kUnpremul_SkAlphaType;
     }
-    bitmap->pixelRef()->reconfigure(SkImageInfo::Make(width, height, colorType, alphaType));
+    bitmap->pixelRef()->reconfigure(SkImageInfo::Make(width, height, colorType, alphaType,
+            sk_sp<SkColorSpace>(bitmap->info().colorSpace())));
 }
 
 // These must match the int values in Bitmap.java
@@ -927,6 +929,7 @@
     const bool        isMutable = p->readInt32() != 0;
     const SkColorType colorType = (SkColorType)p->readInt32();
     const SkAlphaType alphaType = (SkAlphaType)p->readInt32();
+    const bool        isSRGB = p->readInt32() != 0;
     const int         width = p->readInt32();
     const int         height = p->readInt32();
     const int         rowBytes = p->readInt32();
@@ -943,7 +946,8 @@
 
     std::unique_ptr<SkBitmap> bitmap(new SkBitmap);
 
-    if (!bitmap->setInfo(SkImageInfo::Make(width, height, colorType, alphaType), rowBytes)) {
+    if (!bitmap->setInfo(SkImageInfo::Make(width, height, colorType, alphaType,
+            isSRGB ? SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named) : nullptr), rowBytes)) {
         return NULL;
     }
 
@@ -1058,9 +1062,13 @@
     auto androidBitmap = reinterpret_cast<Bitmap*>(bitmapHandle);
     androidBitmap->getSkBitmap(&bitmap);
 
+    sk_sp<SkColorSpace> sRGB = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+    bool isSRGB = bitmap.colorSpace() == sRGB.get();
+
     p->writeInt32(isMutable);
     p->writeInt32(bitmap.colorType());
     p->writeInt32(bitmap.alphaType());
+    p->writeInt32(isSRGB); // TODO: We should write the color space (b/32072280)
     p->writeInt32(bitmap.width());
     p->writeInt32(bitmap.height());
     p->writeInt32(bitmap.rowBytes());
@@ -1273,7 +1281,9 @@
     reinterpret_cast<Bitmap*>(bm1Handle)->getSkBitmap(&bm1);
     if (bm0.width() != bm1.width() ||
         bm0.height() != bm1.height() ||
-        bm0.colorType() != bm1.colorType()) {
+        bm0.colorType() != bm1.colorType() ||
+        bm0.alphaType() != bm1.alphaType() ||
+        bm0.colorSpace() != bm1.colorSpace()) {
         return JNI_FALSE;
     }
 
@@ -1326,13 +1336,6 @@
     return JNI_TRUE;
 }
 
-static jlong Bitmap_refPixelRef(JNIEnv* env, jobject, jlong bitmapHandle) {
-    LocalScopedBitmap bitmap(bitmapHandle);
-    SkPixelRef* pixelRef = bitmap->pixelRef();
-    SkSafeRef(pixelRef);
-    return reinterpret_cast<jlong>(pixelRef);
-}
-
 static void Bitmap_prepareToDraw(JNIEnv* env, jobject, jlong bitmapPtr) {
     LocalScopedBitmap bitmapHandle(bitmapPtr);
     if (!bitmapHandle.valid()) return;
@@ -1402,7 +1405,6 @@
     {   "nativeCopyPixelsFromBuffer", "(JLjava/nio/Buffer;)V",
                                             (void*)Bitmap_copyPixelsFromBuffer },
     {   "nativeSameAs",             "(JJ)Z", (void*)Bitmap_sameAs },
-    {   "nativeRefPixelRef",        "(J)J", (void*)Bitmap_refPixelRef },
     {   "nativePrepareToDraw",      "(J)V", (void*)Bitmap_prepareToDraw },
     {   "nativeGetAllocationByteCount", "(J)I", (void*)Bitmap_getAllocationByteCount },
 };
diff --git a/core/jni/android/graphics/BitmapFactory.cpp b/core/jni/android/graphics/BitmapFactory.cpp
index 5bb0274..5c24585 100644
--- a/core/jni/android/graphics/BitmapFactory.cpp
+++ b/core/jni/android/graphics/BitmapFactory.cpp
@@ -385,11 +385,8 @@
     // Set the alpha type for the decode.
     SkAlphaType alphaType = codec->computeOutputAlphaType(requireUnpremultiplied);
 
-    // Enable legacy behavior to avoid any gamma correction.  Android's assets are
-    // adjusted to expect a non-gamma correct premultiply.
-    sk_sp<SkColorSpace> colorSpace = nullptr;
-    const SkImageInfo decodeInfo = SkImageInfo::Make(size.width(), size.height(), decodeColorType,
-                                                     alphaType, colorSpace);
+    const SkImageInfo decodeInfo = SkImageInfo::Make(size.width(), size.height(),
+            decodeColorType, alphaType, GraphicsJNI::defaultColorSpace());
 
     SkImageInfo bitmapInfo = decodeInfo;
     if (decodeColorType == kGray_8_SkColorType) {
@@ -413,7 +410,7 @@
 
     // Use SkAndroidCodec to perform the decode.
     SkAndroidCodec::AndroidOptions codecOptions;
-    codecOptions.fZeroInitialized =  decodeAllocator == &defaultAllocator ?
+    codecOptions.fZeroInitialized = decodeAllocator == &defaultAllocator ?
             SkCodec::kYes_ZeroInitialized : SkCodec::kNo_ZeroInitialized;
     codecOptions.fColorPtr = colorPtr;
     codecOptions.fColorCount = colorCount;
@@ -452,8 +449,10 @@
     jobject ninePatchInsets = NULL;
     if (peeker.mHasInsets) {
         ninePatchInsets = env->NewObject(gInsetStruct_class, gInsetStruct_constructorMethodID,
-                peeker.mOpticalInsets[0], peeker.mOpticalInsets[1], peeker.mOpticalInsets[2], peeker.mOpticalInsets[3],
-                peeker.mOutlineInsets[0], peeker.mOutlineInsets[1], peeker.mOutlineInsets[2], peeker.mOutlineInsets[3],
+                peeker.mOpticalInsets[0], peeker.mOpticalInsets[1],
+                peeker.mOpticalInsets[2], peeker.mOpticalInsets[3],
+                peeker.mOutlineInsets[0], peeker.mOutlineInsets[1],
+                peeker.mOutlineInsets[2], peeker.mOutlineInsets[3],
                 peeker.mOutlineRadius, peeker.mOutlineAlpha, scale);
         if (ninePatchInsets == NULL) {
             return nullObjectReturn("nine patch insets == null");
@@ -495,11 +494,11 @@
         }
 
         SkPaint paint;
-        // kSrc_Mode instructs us to overwrite the unininitialized pixels in
+        // kSrc_Mode instructs us to overwrite the uninitialized pixels in
         // outputBitmap.  Otherwise we would blend by default, which is not
         // what we want.
         paint.setXfermodeMode(SkXfermode::kSrc_Mode);
-        paint.setFilterQuality(kLow_SkFilterQuality);
+        paint.setFilterQuality(kLow_SkFilterQuality); // bilinear filtering
 
         SkCanvas canvas(outputBitmap);
         canvas.scale(sx, sy);
diff --git a/core/jni/android/graphics/Graphics.cpp b/core/jni/android/graphics/Graphics.cpp
index 8a55052..82b70fc 100644
--- a/core/jni/android/graphics/Graphics.cpp
+++ b/core/jni/android/graphics/Graphics.cpp
@@ -587,6 +587,14 @@
     return wrapper;
 }
 
+sk_sp<SkColorSpace> GraphicsJNI::defaultColorSpace() {
+#ifdef ANDROID_ENABLE_LINEAR_BLENDING
+    return SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+#else
+    return nullptr;
+#endif
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 bool HeapAllocator::allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) {
     mStorage.reset(GraphicsJNI::allocateHeapPixelRef(bitmap, ctable));
diff --git a/core/jni/android/graphics/GraphicsJNI.h b/core/jni/android/graphics/GraphicsJNI.h
index ceda3cd..34c4efb 100644
--- a/core/jni/android/graphics/GraphicsJNI.h
+++ b/core/jni/android/graphics/GraphicsJNI.h
@@ -10,6 +10,7 @@
 #include "SkMallocPixelRef.h"
 #include "SkPoint.h"
 #include "SkRect.h"
+#include "SkColorSpace.h"
 #include <jni.h>
 #include <hwui/Canvas.h>
 
@@ -93,6 +94,8 @@
     static bool SetPixels(JNIEnv* env, jintArray colors, int srcOffset,
             int srcStride, int x, int y, int width, int height,
             const SkBitmap& dstBitmap);
+
+    static sk_sp<SkColorSpace> defaultColorSpace();
 };
 
 class HeapAllocator : public SkBRDAllocator {
diff --git a/core/jni/android_graphics_Canvas.cpp b/core/jni/android_graphics_Canvas.cpp
index 87f754d..43f7ca5 100644
--- a/core/jni/android_graphics_Canvas.cpp
+++ b/core/jni/android_graphics_Canvas.cpp
@@ -442,9 +442,8 @@
                             jboolean hasAlpha, jlong paintHandle) {
     // Note: If hasAlpha is false, kRGB_565_SkColorType will be used, which will
     // correct the alphaType to kOpaque_SkAlphaType.
-    SkImageInfo info = SkImageInfo::Make(width, height,
-                           hasAlpha ? kN32_SkColorType : kRGB_565_SkColorType,
-                           kPremul_SkAlphaType);
+    SkImageInfo info = SkImageInfo::MakeN32(width, height, kPremul_SkAlphaType,
+            GraphicsJNI::defaultColorSpace());
     SkBitmap bitmap;
     bitmap.setInfo(info);
     if (!GraphicsJNI::allocatePixels(env, &bitmap, NULL)) {
diff --git a/core/jni/android_view_GraphicBuffer.cpp b/core/jni/android_view_GraphicBuffer.cpp
index 59c337b..1743731 100644
--- a/core/jni/android_view_GraphicBuffer.cpp
+++ b/core/jni/android_view_GraphicBuffer.cpp
@@ -182,7 +182,8 @@
     SkBitmap bitmap;
     bitmap.setInfo(SkImageInfo::Make(buffer->getWidth(), buffer->getHeight(),
                                      convertPixelFormat(buffer->getPixelFormat()),
-                                     kPremul_SkAlphaType),
+                                     kPremul_SkAlphaType,
+                                     GraphicsJNI::defaultColorSpace()),
                    bytesCount);
 
     if (buffer->getWidth() > 0 && buffer->getHeight() > 0) {
diff --git a/core/jni/android_view_Surface.cpp b/core/jni/android_view_Surface.cpp
index 3f2b924..b6c81cf8 100644
--- a/core/jni/android_view_Surface.cpp
+++ b/core/jni/android_view_Surface.cpp
@@ -318,11 +318,11 @@
         return 0;
     }
 
-
     SkImageInfo info = SkImageInfo::Make(outBuffer.width, outBuffer.height,
                                          convertPixelFormat(outBuffer.format),
-                                         outBuffer.format == PIXEL_FORMAT_RGBX_8888 ?
-                                         kOpaque_SkAlphaType : kPremul_SkAlphaType);
+                                         outBuffer.format == PIXEL_FORMAT_RGBX_8888
+                                                 ? kOpaque_SkAlphaType : kPremul_SkAlphaType,
+                                         GraphicsJNI::defaultColorSpace());
 
     SkBitmap bitmap;
     ssize_t bpr = outBuffer.stride * bytesPerPixel(outBuffer.format);
diff --git a/core/jni/android_view_SurfaceControl.cpp b/core/jni/android_view_SurfaceControl.cpp
index 5d53b3f..65f12ac 100644
--- a/core/jni/android_view_SurfaceControl.cpp
+++ b/core/jni/android_view_SurfaceControl.cpp
@@ -175,7 +175,9 @@
     }
     SkImageInfo screenshotInfo = SkImageInfo::Make(screenshot->getWidth(),
                                                    screenshot->getHeight(),
-                                                   colorType, alphaType);
+                                                   colorType,
+                                                   alphaType,
+                                                   GraphicsJNI::defaultColorSpace());
 
     const size_t rowBytes =
             screenshot->getStride() * android::bytesPerPixel(screenshot->getFormat());
diff --git a/core/jni/android_view_TextureView.cpp b/core/jni/android_view_TextureView.cpp
index e185281..268aec5 100644
--- a/core/jni/android_view_TextureView.cpp
+++ b/core/jni/android_view_TextureView.cpp
@@ -90,7 +90,8 @@
         default:
             break;
     }
-    return SkImageInfo::Make(buffer.width, buffer.height, colorType, alphaType);
+    return SkImageInfo::Make(buffer.width, buffer.height, colorType, alphaType,
+            GraphicsJNI::defaultColorSpace());
 }
 
 /**
diff --git a/core/jni/android_view_ThreadedRenderer.cpp b/core/jni/android_view_ThreadedRenderer.cpp
index 309bb2f..14dcb3f 100644
--- a/core/jni/android_view_ThreadedRenderer.cpp
+++ b/core/jni/android_view_ThreadedRenderer.cpp
@@ -613,21 +613,6 @@
     return atoi(prop) > 0 ? JNI_TRUE : JNI_FALSE;
 }
 
-static void android_view_ThreadedRenderer_setAtlas(JNIEnv* env, jobject clazz,
-        jlong proxyPtr, jobject graphicBuffer, jlongArray atlasMapArray) {
-    sp<GraphicBuffer> buffer = graphicBufferForJavaObject(env, graphicBuffer);
-    jsize len = env->GetArrayLength(atlasMapArray);
-    if (len <= 0) {
-        ALOGW("Failed to initialize atlas, invalid map length: %d", len);
-        return;
-    }
-    int64_t* map = new int64_t[len];
-    env->GetLongArrayRegion(atlasMapArray, 0, len, map);
-
-    RenderProxy* proxy = reinterpret_cast<RenderProxy*>(proxyPtr);
-    proxy->setTextureAtlas(buffer, map, len);
-}
-
 static void android_view_ThreadedRenderer_setProcessStatsBuffer(JNIEnv* env, jobject clazz,
         jlong proxyPtr, jint fd) {
     RenderProxy* proxy = reinterpret_cast<RenderProxy*>(proxyPtr);
@@ -955,7 +940,6 @@
 
 static const JNINativeMethod gMethods[] = {
     { "nSupportsOpenGL", "()Z", (void*) android_view_ThreadedRenderer_supportsOpenGL },
-    { "nSetAtlas", "(JLandroid/view/GraphicBuffer;[J)V",   (void*) android_view_ThreadedRenderer_setAtlas },
     { "nSetProcessStatsBuffer", "(JI)V", (void*) android_view_ThreadedRenderer_setProcessStatsBuffer },
     { "nGetRenderThreadTid", "(J)I", (void*) android_view_ThreadedRenderer_getRenderThreadTid },
     { "nCreateRootRenderNode", "()J", (void*) android_view_ThreadedRenderer_createRootRenderNode },
diff --git a/graphics/java/android/graphics/Atlas.java b/graphics/java/android/graphics/Atlas.java
deleted file mode 100644
index e0a5345..0000000
--- a/graphics/java/android/graphics/Atlas.java
+++ /dev/null
@@ -1,416 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.graphics;
-
-/**
- * @hide
- */
-public class Atlas {
-    /**
-     * WARNING: These flag values are part of the on-disk configuration information,
-     * do not change their values.
-     */
-
-    /** DELETED: FLAG_ROTATION = 0x01 */
-
-    /**
-     * This flag indicates whether the packing algorithm should leave
-     * an empty 1 pixel wide border around each bitmap. This border can
-     * be useful if the content of the atlas will be used in OpenGL using
-     * bilinear filtering.
-     */
-    public static final int FLAG_ADD_PADDING = 0x2;
-    /**
-     * Default flags: allow rotations and add padding.
-     */
-    public static final int FLAG_DEFAULTS = FLAG_ADD_PADDING;
-
-    /**
-     * Each type defines a different packing algorithm that can
-     * be used by an {@link Atlas}. The best algorithm to use
-     * will depend on the source dataset and the dimensions of
-     * the atlas.
-     */
-    public enum Type {
-        SliceMinArea,
-        SliceMaxArea,
-        SliceShortAxis,
-        SliceLongAxis
-    }
-
-    /**
-     * Represents a bitmap packed in the atlas. Each entry has a location in
-     * pixels in the atlas and a rotation flag.
-     */
-    public static class Entry {
-        /**
-         * Location, in pixels, of the bitmap on the X axis in the atlas.
-         */
-        public int x;
-        /**
-         * Location, in pixels, of the bitmap on the Y axis in the atlas.
-         */
-        public int y;
-    }
-
-    private final Policy mPolicy;
-
-    /**
-     * Creates a new atlas with the specified algorithm and dimensions
-     * in pixels. Calling this constructor is equivalent to calling
-     * {@link #Atlas(Atlas.Type, int, int, int)} with {@link #FLAG_DEFAULTS}.
-     *
-     * @param type The algorithm to use to pack rectangles in the atlas
-     * @param width The width of the atlas in pixels
-     * @param height The height of the atlas in pixels
-     *
-     * @see #Atlas(Atlas.Type, int, int, int)
-     */
-    public Atlas(Type type, int width, int height) {
-        this(type, width, height, FLAG_DEFAULTS);
-    }
-
-    /**
-     * Creates a new atlas with the specified algorithm and dimensions
-     * in pixels. A set of flags can also be specified to control the
-     * behavior of the atlas.
-     *
-     * @param type The algorithm to use to pack rectangles in the atlas
-     * @param width The width of the atlas in pixels
-     * @param height The height of the atlas in pixels
-     * @param flags Optional flags to control the behavior of the atlas:
-     *              {@link #FLAG_ADD_PADDING}, {@link #FLAG_ALLOW_ROTATIONS}
-     *
-     * @see #Atlas(Atlas.Type, int, int)
-     */
-    public Atlas(Type type, int width, int height, int flags) {
-        mPolicy = findPolicy(type, width, height, flags);
-    }
-
-    /**
-     * Packs a rectangle of the specified dimensions in this atlas.
-     *
-     * @param width The width of the rectangle to pack in the atlas
-     * @param height The height of the rectangle to pack in the atlas
-     *
-     * @return An {@link Entry} instance if the rectangle was packed in
-     *         the atlas, or null if the rectangle could not fit
-     *
-     * @see #pack(int, int, Atlas.Entry)
-     */
-    public Entry pack(int width, int height) {
-        return pack(width, height, null);
-    }
-
-    /**
-     * Packs a rectangle of the specified dimensions in this atlas.
-     *
-     * @param width The width of the rectangle to pack in the atlas
-     * @param height The height of the rectangle to pack in the atlas
-     * @param entry Out parameter that will be filled in with the location
-     *              and attributes of the packed rectangle, can be null
-     *
-     * @return An {@link Entry} instance if the rectangle was packed in
-     *         the atlas, or null if the rectangle could not fit
-     *
-     * @see #pack(int, int)
-     */
-    public Entry pack(int width, int height, Entry entry) {
-        if (entry == null) entry = new Entry();
-        return mPolicy.pack(width, height, entry);
-    }
-
-    private static Policy findPolicy(Type type, int width, int height, int flags) {
-        switch (type) {
-            case SliceMinArea:
-                return new SlicePolicy(width, height, flags,
-                        new SlicePolicy.MinAreaSplitDecision());
-            case SliceMaxArea:
-                return new SlicePolicy(width, height, flags,
-                        new SlicePolicy.MaxAreaSplitDecision());
-            case SliceShortAxis:
-                return new SlicePolicy(width, height, flags,
-                        new SlicePolicy.ShorterFreeAxisSplitDecision());
-            case SliceLongAxis:
-                return new SlicePolicy(width, height, flags,
-                        new SlicePolicy.LongerFreeAxisSplitDecision());
-        }
-        return null;
-    }
-
-    /**
-     * A policy defines how the atlas performs the packing operation.
-     */
-    private static abstract class Policy {
-        abstract Entry pack(int width, int height, Entry entry);
-    }
-
-    /**
-     * The Slice algorightm divides the remaining empty space either
-     * horizontally or vertically after a bitmap is placed in the atlas.
-     *
-     * NOTE: the algorithm is explained below using a tree but is
-     * implemented using a linked list instead for performance reasons.
-     *
-     * The algorithm starts with a single empty cell covering the entire
-     * atlas:
-     *
-     *  -----------------------
-     * |                       |
-     * |                       |
-     * |                       |
-     * |      Empty space      |
-     * |          (C0)         |
-     * |                       |
-     * |                       |
-     * |                       |
-     *  -----------------------
-     *
-     * The tree of cells looks like this:
-     *
-     * N0(free)
-     *
-     * The algorithm then places a bitmap B1, if possible:
-     *
-     *  -----------------------
-     * |        |              |
-     * |   B1   |              |
-     * |        |              |
-     * |--------               |
-     * |                       |
-     * |                       |
-     * |                       |
-     * |                       |
-     *  -----------------------
-     *
-     *  After placing a bitmap in an empty cell, the algorithm splits
-     *  the remaining space in two new empty cells. The split can occur
-     *  vertically or horizontally (this is controlled by the "split
-     *  decision" parameter of the algorithm.)
-     *
-     *  Here is for the instance the result of a vertical split:
-     *
-     *  -----------------------
-     * |        |              |
-     * |   B1   |              |
-     * |        |              |
-     * |--------|      C2      |
-     * |        |              |
-     * |        |              |
-     * |   C1   |              |
-     * |        |              |
-     *  -----------------------
-     *
-     * The cells tree now looks like this:
-     *
-     *       C0(occupied)
-     *           / \
-     *          /   \
-     *         /     \
-     *        /       \
-     *    C1(free)  C2(free)
-     *
-     * For each bitmap to place in the atlas, the Slice algorithm
-     * will visit the free cells until it finds one where a bitmap can
-     * fit. It will then split the now occupied cell and proceed onto
-     * the next bitmap.
-     */
-    private static class SlicePolicy extends Policy {
-        private final Cell mRoot = new Cell();
-
-        private final SplitDecision mSplitDecision;
-
-        private final int mPadding;
-
-        /**
-         * A cell represents a sub-rectangle of the atlas. A cell is
-         * a node in a linked list representing the available free
-         * space in the atlas.
-         */
-        private static class Cell {
-            int x;
-            int y;
-
-            int width;
-            int height;
-
-            Cell next;
-
-            @Override
-            public String toString() {
-                return String.format("cell[x=%d y=%d width=%d height=%d", x, y, width, height);
-            }
-        }
-
-        SlicePolicy(int width, int height, int flags, SplitDecision splitDecision) {
-            mPadding = (flags & FLAG_ADD_PADDING) != 0 ? 1 : 0;
-
-            // The entire atlas is empty at first, minus padding
-            Cell first = new Cell();
-            first.x = first.y = mPadding;
-            first.width = width - 2 * mPadding;
-            first.height = height - 2 * mPadding;
-
-            mRoot.next = first;
-            mSplitDecision = splitDecision;
-        }
-
-        @Override
-        Entry pack(int width, int height, Entry entry) {
-            Cell cell = mRoot.next;
-            Cell prev = mRoot;
-
-            while (cell != null) {
-                if (insert(cell, prev, width, height, entry)) {
-                    return entry;
-                }
-
-                prev = cell;
-                cell = cell.next;
-            }
-
-            return null;
-        }
-
-        /**
-         * Defines how the remaining empty space should be split up:
-         * vertically or horizontally.
-         */
-        private static interface SplitDecision {
-            /**
-             * Returns true if the remaining space defined by
-             * <code>freeWidth</code> and <code>freeHeight</code>
-             * should be split horizontally.
-             *
-             * @param freeWidth The rectWidth of the free space after packing a rectangle
-             * @param freeHeight The rectHeight of the free space after packing a rectangle
-             * @param rectWidth The rectWidth of the rectangle that was packed in a cell
-             * @param rectHeight The rectHeight of the rectangle that was packed in a cell
-             */
-            boolean splitHorizontal(int freeWidth, int freeHeight,
-                    int rectWidth, int rectHeight);
-        }
-
-        // Splits the free area horizontally to minimize the horizontal section area
-        private static class MinAreaSplitDecision implements SplitDecision {
-            @Override
-            public boolean splitHorizontal(int freeWidth, int freeHeight,
-                    int rectWidth, int rectHeight) {
-                return rectWidth * freeHeight > freeWidth * rectHeight;
-            }
-        }
-
-        // Splits the free area horizontally to maximize the horizontal section area
-        private static class MaxAreaSplitDecision implements SplitDecision {
-            @Override
-            public boolean splitHorizontal(int freeWidth, int freeHeight,
-                    int rectWidth, int rectHeight) {
-                return rectWidth * freeHeight <= freeWidth * rectHeight;
-            }
-        }
-
-        // Splits the free area horizontally if the horizontal axis is shorter
-        private static class ShorterFreeAxisSplitDecision implements SplitDecision {
-            @Override
-            public boolean splitHorizontal(int freeWidth, int freeHeight,
-                    int rectWidth, int rectHeight) {
-                return freeWidth <= freeHeight;
-            }
-        }
-
-        // Splits the free area horizontally if the vertical axis is shorter
-        private static class LongerFreeAxisSplitDecision implements SplitDecision {
-            @Override
-            public boolean splitHorizontal(int freeWidth, int freeHeight,
-                    int rectWidth, int rectHeight) {
-                return freeWidth > freeHeight;
-            }
-        }
-
-        /**
-         * Attempts to pack a rectangle of specified dimensions in the available
-         * empty space.
-         *
-         * @param cell The cell representing free space in which to pack the rectangle
-         * @param prev The previous cell in the free space linked list
-         * @param width The width of the rectangle to pack
-         * @param height The height of the rectangle to pack
-         * @param entry Stores the location of the packged rectangle, if it fits
-         *
-         * @return True if the rectangle was packed in the atlas, false otherwise
-         */
-        private boolean insert(Cell cell, Cell prev, int width, int height, Entry entry) {
-            if (cell.width < width || cell.height < height) {
-                return false;
-            }
-
-            // Remaining free space after packing the rectangle
-            int deltaWidth = cell.width - width;
-            int deltaHeight = cell.height - height;
-
-            // Split the remaining free space into two new cells
-            Cell first = new Cell();
-            Cell second = new Cell();
-
-            first.x = cell.x + width + mPadding;
-            first.y = cell.y;
-            first.width = deltaWidth - mPadding;
-
-            second.x = cell.x;
-            second.y = cell.y + height + mPadding;
-            second.height = deltaHeight - mPadding;
-
-            if (mSplitDecision.splitHorizontal(deltaWidth, deltaHeight,
-                    width, height)) {
-                first.height = height;
-                second.width = cell.width;
-            } else {
-                first.height = cell.height;
-                second.width = width;
-
-                // The order of the cells matters for efficient packing
-                // We want to give priority to the cell chosen by the
-                // split decision heuristic
-                Cell temp = first;
-                first = second;
-                second = temp;
-            }
-
-            // Remove degenerate cases to keep the free list as small as possible
-            if (first.width > 0 && first.height > 0) {
-                prev.next = first;
-                prev = first;
-            }
-
-            if (second.width > 0 && second.height > 0) {
-                prev.next = second;
-                second.next = cell.next;
-            } else {
-                prev.next = cell.next;
-            }
-
-            // The cell is now completely removed from the free list
-            cell.next = null;
-
-            // Return the location and rotation of the packed rectangle
-            entry.x = cell.x;
-            entry.y = cell.y;
-
-            return true;
-        }
-    }
-}
diff --git a/graphics/java/android/graphics/Bitmap.java b/graphics/java/android/graphics/Bitmap.java
index 7ce750d..f708292 100644
--- a/graphics/java/android/graphics/Bitmap.java
+++ b/graphics/java/android/graphics/Bitmap.java
@@ -1654,16 +1654,6 @@
         nativePrepareToDraw(mNativePtr);
     }
 
-    /**
-     * Refs the underlying SkPixelRef and returns a pointer to it.
-     *
-     * @hide
-     * */
-    public final long refSkPixelRef() {
-        checkRecycled("Can't refSkPixelRef on a recycled bitmap!");
-        return nativeRefPixelRef(mNativePtr);
-    }
-
     //////////// native methods
 
     private static native Bitmap nativeCreate(int[] colors, int offset,
@@ -1720,7 +1710,6 @@
     private static native boolean nativeHasMipMap(long nativeBitmap);
     private static native void nativeSetHasMipMap(long nativeBitmap, boolean hasMipMap);
     private static native boolean nativeSameAs(long nativeBitmap0, long nativeBitmap1);
-    private static native long nativeRefPixelRef(long nativeBitmap);
     private static native void nativePrepareToDraw(long nativeBitmap);
     private static native int nativeGetAllocationByteCount(long nativeBitmap);
 }
diff --git a/graphics/java/android/graphics/drawable/BitmapDrawable.java b/graphics/java/android/graphics/drawable/BitmapDrawable.java
index df107f5..6deeb0d 100644
--- a/graphics/java/android/graphics/drawable/BitmapDrawable.java
+++ b/graphics/java/android/graphics/drawable/BitmapDrawable.java
@@ -49,7 +49,6 @@
 import org.xmlpull.v1.XmlPullParserException;
 
 import java.io.IOException;
-import java.util.Collection;
 
 /**
  * A Drawable that wraps a bitmap and can be tiled, stretched, or aligned. You can create a
@@ -957,14 +956,6 @@
         }
 
         @Override
-        public int addAtlasableBitmaps(Collection<Bitmap> atlasList) {
-            if (isAtlasable(mBitmap) && atlasList.add(mBitmap)) {
-                return mBitmap.getWidth() * mBitmap.getHeight();
-            }
-            return 0;
-        }
-
-        @Override
         public Drawable newDrawable() {
             return new BitmapDrawable(this, null);
         }
diff --git a/graphics/java/android/graphics/drawable/Drawable.java b/graphics/java/android/graphics/drawable/Drawable.java
index 10f0dda..6ddc2d7 100644
--- a/graphics/java/android/graphics/drawable/Drawable.java
+++ b/graphics/java/android/graphics/drawable/Drawable.java
@@ -58,7 +58,6 @@
 import java.io.InputStream;
 import java.lang.ref.WeakReference;
 import java.util.Arrays;
-import java.util.Collection;
 
 /**
  * A Drawable is a general abstraction for "something that can be drawn."  Most
@@ -1367,19 +1366,6 @@
         public abstract @Config int getChangingConfigurations();
 
         /**
-         * @return Total pixel count
-         * @hide
-         */
-        public int addAtlasableBitmaps(@NonNull Collection<Bitmap> atlasList) {
-            return 0;
-        }
-
-        /** @hide */
-        protected final boolean isAtlasable(@Nullable Bitmap bitmap) {
-            return bitmap != null && bitmap.getConfig() == Bitmap.Config.ARGB_8888;
-        }
-
-        /**
          * Return whether this constant state can have a theme applied.
          */
         public boolean canApplyTheme() {
diff --git a/graphics/java/android/graphics/drawable/DrawableContainer.java b/graphics/java/android/graphics/drawable/DrawableContainer.java
index c7a3c75..abdc2b9 100644
--- a/graphics/java/android/graphics/drawable/DrawableContainer.java
+++ b/graphics/java/android/graphics/drawable/DrawableContainer.java
@@ -21,7 +21,6 @@
 import android.content.res.ColorStateList;
 import android.content.res.Resources;
 import android.content.res.Resources.Theme;
-import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
 import android.graphics.Insets;
@@ -35,8 +34,6 @@
 import android.util.SparseArray;
 import android.view.View;
 
-import java.util.Collection;
-
 /**
  * A helper class that contains several {@link Drawable}s and selects which one to use.
  *
@@ -1194,19 +1191,6 @@
             return true;
         }
 
-        /** @hide */
-        @Override
-        public int addAtlasableBitmaps(Collection<Bitmap> atlasList) {
-            final int N = mNumChildren;
-            int pixelCount = 0;
-            for (int i = 0; i < N; i++) {
-                final ConstantState state = getChild(i).getConstantState();
-                if (state != null) {
-                    pixelCount += state.addAtlasableBitmaps(atlasList);
-                }
-            }
-            return pixelCount;
-        }
     }
 
     protected void setConstantState(DrawableContainerState state) {
diff --git a/graphics/java/android/graphics/drawable/DrawableWrapper.java b/graphics/java/android/graphics/drawable/DrawableWrapper.java
index 5abfc54..5887939 100644
--- a/graphics/java/android/graphics/drawable/DrawableWrapper.java
+++ b/graphics/java/android/graphics/drawable/DrawableWrapper.java
@@ -28,7 +28,6 @@
 import android.content.res.Resources;
 import android.content.res.Resources.Theme;
 import android.content.res.TypedArray;
-import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
 import android.graphics.Insets;
@@ -41,7 +40,6 @@
 import android.view.View;
 
 import java.io.IOException;
-import java.util.Collection;
 
 /**
  * Drawable container with only one child element.
@@ -508,15 +506,6 @@
         }
 
         @Override
-        public int addAtlasableBitmaps(Collection<Bitmap> atlasList) {
-            final Drawable.ConstantState state = mDrawableState;
-            if (state != null) {
-                return state.addAtlasableBitmaps(atlasList);
-            }
-            return 0;
-        }
-
-        @Override
         public Drawable newDrawable() {
             return newDrawable(null);
         }
diff --git a/graphics/java/android/graphics/drawable/LayerDrawable.java b/graphics/java/android/graphics/drawable/LayerDrawable.java
index c30c4c2..e09fea5 100644
--- a/graphics/java/android/graphics/drawable/LayerDrawable.java
+++ b/graphics/java/android/graphics/drawable/LayerDrawable.java
@@ -23,7 +23,6 @@
 import android.content.res.Resources;
 import android.content.res.Resources.Theme;
 import android.content.res.TypedArray;
-import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
 import android.graphics.Outline;
@@ -42,7 +41,6 @@
 import org.xmlpull.v1.XmlPullParserException;
 
 import java.io.IOException;
-import java.util.Collection;
 
 /**
  * A Drawable that manages an array of other Drawables. These are drawn in array
@@ -2128,22 +2126,6 @@
             mHaveIsStateful = false;
         }
 
-        @Override
-        public int addAtlasableBitmaps(Collection<Bitmap> atlasList) {
-            final ChildDrawable[] array = mChildren;
-            final int N = mNum;
-            int pixelCount = 0;
-            for (int i = 0; i < N; i++) {
-                final Drawable dr = array[i].mDrawable;
-                if (dr != null) {
-                    final ConstantState state = dr.getConstantState();
-                    if (state != null) {
-                        pixelCount += state.addAtlasableBitmaps(atlasList);
-                    }
-                }
-            }
-            return pixelCount;
-        }
     }
 }
 
diff --git a/graphics/java/android/graphics/drawable/NinePatchDrawable.java b/graphics/java/android/graphics/drawable/NinePatchDrawable.java
index d962385..c7183d9 100644
--- a/graphics/java/android/graphics/drawable/NinePatchDrawable.java
+++ b/graphics/java/android/graphics/drawable/NinePatchDrawable.java
@@ -49,7 +49,6 @@
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.Collection;
 
 /**
  *
@@ -633,15 +632,6 @@
         }
 
         @Override
-        public int addAtlasableBitmaps(Collection<Bitmap> atlasList) {
-            final Bitmap bitmap = mNinePatch.getBitmap();
-            if (isAtlasable(bitmap) && atlasList.add(bitmap)) {
-                return bitmap.getWidth() * bitmap.getHeight();
-            }
-            return 0;
-        }
-
-        @Override
         public Drawable newDrawable() {
             return new NinePatchDrawable(this, null);
         }
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 81a1831..2d9b764 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -45,7 +45,6 @@
     AnimationContext.cpp \
     Animator.cpp \
     AnimatorManager.cpp \
-    AssetAtlas.cpp \
     BakedOpDispatcher.cpp \
     BakedOpRenderer.cpp \
     BakedOpState.cpp \
@@ -56,7 +55,6 @@
     DeferredLayerUpdater.cpp \
     DeviceInfo.cpp \
     DisplayList.cpp \
-    Dither.cpp \
     Extensions.cpp \
     FboCache.cpp \
     FontRenderer.cpp \
@@ -130,6 +128,14 @@
     hwui_cflags += -DUSE_HWC2
 endif
 
+# TODO: Linear blending should be enabled by default, but we are
+# TODO: making it an opt-in while it's a work in progress
+# TODO: The final test should be:
+# TODO: ifneq ($(TARGET_ENABLE_LINEAR_BLENDING),false)
+ifeq ($(TARGET_ENABLE_LINEAR_BLENDING),true)
+    hwui_cflags += -DANDROID_ENABLE_LINEAR_BLENDING
+endif
+
 # GCC false-positives on this warning, and since we -Werror that's
 # a problem
 hwui_cflags += -Wno-free-nonheap-object
@@ -143,7 +149,6 @@
     hwui_cflags += -DBUGREPORT_FONT_CACHE_USAGE
 endif
 
-
 ifndef HWUI_COMPILE_SYMBOLS
     hwui_cflags += -fvisibility=hidden
 endif
diff --git a/libs/hwui/AssetAtlas.cpp b/libs/hwui/AssetAtlas.cpp
deleted file mode 100644
index e2e70372..0000000
--- a/libs/hwui/AssetAtlas.cpp
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "AssetAtlas.h"
-#include "Caches.h"
-#include "Image.h"
-
-#include <GLES2/gl2ext.h>
-
-namespace android {
-namespace uirenderer {
-
-///////////////////////////////////////////////////////////////////////////////
-// Lifecycle
-///////////////////////////////////////////////////////////////////////////////
-
-void AssetAtlas::init(const sp<GraphicBuffer>& buffer, int64_t* map, int count) {
-    if (mImage) {
-        return;
-    }
-
-    ATRACE_NAME("AssetAtlas::init");
-
-    mImage = new Image(buffer);
-    if (mImage->getTexture()) {
-        if (!mTexture) {
-            Caches& caches = Caches::getInstance();
-            mTexture = new Texture(caches);
-            mTexture->wrap(mImage->getTexture(),
-                    buffer->getWidth(), buffer->getHeight(), GL_RGBA);
-            createEntries(caches, map, count);
-        }
-    } else {
-        ALOGW("Could not create atlas image");
-        terminate();
-    }
-}
-
-void AssetAtlas::terminate() {
-    delete mImage;
-    mImage = nullptr;
-    delete mTexture;
-    mTexture = nullptr;
-    mEntries.clear();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// Entries
-///////////////////////////////////////////////////////////////////////////////
-
-AssetAtlas::Entry* AssetAtlas::getEntry(const SkPixelRef* pixelRef) const {
-    auto result = mEntries.find(pixelRef);
-    return result != mEntries.end() ? result->second.get() : nullptr;
-}
-
-Texture* AssetAtlas::getEntryTexture(const SkPixelRef* pixelRef) const {
-    auto result = mEntries.find(pixelRef);
-    return result != mEntries.end() ? result->second->texture : nullptr;
-}
-
-/**
- * Delegates changes to wrapping and filtering to the base atlas texture
- * instead of applying the changes to the virtual textures.
- */
-struct DelegateTexture: public Texture {
-    DelegateTexture(Caches& caches, Texture* delegate)
-            : Texture(caches), mDelegate(delegate) { }
-
-    virtual void setWrapST(GLenum wrapS, GLenum wrapT, bool bindTexture = false,
-            bool force = false, GLenum renderTarget = GL_TEXTURE_2D) override {
-        mDelegate->setWrapST(wrapS, wrapT, bindTexture, force, renderTarget);
-    }
-
-    virtual void setFilterMinMag(GLenum min, GLenum mag, bool bindTexture = false,
-            bool force = false, GLenum renderTarget = GL_TEXTURE_2D) override {
-        mDelegate->setFilterMinMag(min, mag, bindTexture, force, renderTarget);
-    }
-
-private:
-    Texture* const mDelegate;
-}; // struct DelegateTexture
-
-void AssetAtlas::createEntries(Caches& caches, int64_t* map, int count) {
-    const float width = float(mTexture->width());
-    const float height = float(mTexture->height());
-
-    for (int i = 0; i < count; ) {
-        SkPixelRef* pixelRef = reinterpret_cast<SkPixelRef*>(map[i++]);
-        // NOTE: We're converting from 64 bit signed values to 32 bit
-        // signed values. This is guaranteed to be safe because the "x"
-        // and "y" coordinate values are guaranteed to be representable
-        // with 32 bits. The array is 64 bits wide so that it can carry
-        // pointers on 64 bit architectures.
-        const int x = static_cast<int>(map[i++]);
-        const int y = static_cast<int>(map[i++]);
-
-        // Bitmaps should never be null, we're just extra paranoid
-        if (!pixelRef) continue;
-
-        const UvMapper mapper(
-                x / width, (x + pixelRef->info().width()) / width,
-                y / height, (y + pixelRef->info().height()) / height);
-
-        Texture* texture = new DelegateTexture(caches, mTexture);
-        texture->blend = !SkAlphaTypeIsOpaque(pixelRef->info().alphaType());
-        texture->wrap(mTexture->id(), pixelRef->info().width(),
-                pixelRef->info().height(), mTexture->format());
-
-        std::unique_ptr<Entry> entry(new Entry(pixelRef, texture, mapper, *this));
-        texture->uvMapper = &entry->uvMapper;
-
-        mEntries.emplace(entry->pixelRef, std::move(entry));
-    }
-}
-
-}; // namespace uirenderer
-}; // namespace android
diff --git a/libs/hwui/AssetAtlas.h b/libs/hwui/AssetAtlas.h
deleted file mode 100644
index b32e518..0000000
--- a/libs/hwui/AssetAtlas.h
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HWUI_ASSET_ATLAS_H
-#define ANDROID_HWUI_ASSET_ATLAS_H
-
-#include "Texture.h"
-#include "UvMapper.h"
-
-#include <cutils/compiler.h>
-#include <GLES2/gl2.h>
-#include <ui/GraphicBuffer.h>
-#include <SkBitmap.h>
-
-#include <memory>
-#include <unordered_map>
-
-namespace android {
-namespace uirenderer {
-
-class Caches;
-class Image;
-
-/**
- * An asset atlas holds a collection of framework bitmaps in a single OpenGL
- * texture. Each bitmap is associated with a location, defined in pixels,
- * inside the atlas. The atlas is generated by the framework and bound as
- * an external texture using the EGLImageKHR extension.
- */
-class AssetAtlas {
-public:
-    /**
-     * Entry representing the texture and uvMapper of a PixelRef in the
-     * atlas
-     */
-    class Entry {
-    public:
-        /*
-         * A "virtual texture" object that represents the texture
-         * this entry belongs to. This texture should never be
-         * modified.
-         */
-        Texture* texture;
-
-        /**
-         * Maps texture coordinates in the [0..1] range into the
-         * correct range to sample this entry from the atlas.
-         */
-        const UvMapper uvMapper;
-
-        /**
-         * Unique identifier used to merge bitmaps and 9-patches stored
-         * in the atlas.
-         */
-        const void* getMergeId() const {
-            return texture->blend ? &atlas.mBlendKey : &atlas.mOpaqueKey;
-        }
-
-        ~Entry() {
-            delete texture;
-        }
-
-    private:
-        /**
-         * The pixel ref that generated this atlas entry.
-         */
-        SkPixelRef* pixelRef;
-
-        /**
-         * Atlas this entry belongs to.
-         */
-        const AssetAtlas& atlas;
-
-        Entry(SkPixelRef* pixelRef, Texture* texture, const UvMapper& mapper,
-                    const AssetAtlas& atlas)
-                : texture(texture)
-                , uvMapper(mapper)
-                , pixelRef(pixelRef)
-                , atlas(atlas) {
-        }
-
-        friend class AssetAtlas;
-    };
-
-    AssetAtlas(): mTexture(nullptr), mImage(nullptr),
-            mBlendKey(true), mOpaqueKey(false) { }
-    ~AssetAtlas() { terminate(); }
-
-    /**
-     * Initializes the atlas with the specified buffer and
-     * map. The buffer is a gralloc'd texture that will be
-     * used as an EGLImage. The map is a list of SkBitmap*
-     * and their (x, y) positions
-     *
-     * This method returns immediately if the atlas is already
-     * initialized. To re-initialize the atlas, you must
-     * first call terminate().
-     */
-    ANDROID_API void init(const sp<GraphicBuffer>& buffer, int64_t* map, int count);
-
-    /**
-     * Destroys the atlas texture. This object can be
-     * re-initialized after calling this method.
-     *
-     * After calling this method, the width, height
-     * and texture are set to 0.
-     */
-    void terminate();
-
-    /**
-     * Returns the width of this atlas in pixels.
-     * Can return 0 if the atlas is not initialized.
-     */
-    uint32_t getWidth() const {
-        return mTexture ? mTexture->width() : 0;
-    }
-
-    /**
-     * Returns the height of this atlas in pixels.
-     * Can return 0 if the atlas is not initialized.
-     */
-    uint32_t getHeight() const {
-        return mTexture ? mTexture->height() : 0;
-    }
-
-    /**
-     * Returns the OpenGL name of the texture backing this atlas.
-     * Can return 0 if the atlas is not initialized.
-     */
-    GLuint getTexture() const {
-        return mTexture ? mTexture->id() : 0;
-    }
-
-    /**
-     * Returns the entry in the atlas associated with the specified
-     * pixelRef. If the pixelRef is not in the atlas, return NULL.
-     */
-    Entry* getEntry(const SkPixelRef* pixelRef) const;
-
-    /**
-     * Returns the texture for the atlas entry associated with the
-     * specified pixelRef. If the pixelRef is not in the atlas, return NULL.
-     */
-    Texture* getEntryTexture(const SkPixelRef* pixelRef) const;
-
-private:
-    void createEntries(Caches& caches, int64_t* map, int count);
-
-    Texture* mTexture;
-    Image* mImage;
-
-    const bool mBlendKey;
-    const bool mOpaqueKey;
-
-    std::unordered_map<const SkPixelRef*, std::unique_ptr<Entry>> mEntries;
-}; // class AssetAtlas
-
-}; // namespace uirenderer
-}; // namespace android
-
-#endif // ANDROID_HWUI_ASSET_ATLAS_H
diff --git a/libs/hwui/BakedOpDispatcher.cpp b/libs/hwui/BakedOpDispatcher.cpp
index 8b3f172..6995039 100644
--- a/libs/hwui/BakedOpDispatcher.cpp
+++ b/libs/hwui/BakedOpDispatcher.cpp
@@ -35,11 +35,11 @@
 namespace android {
 namespace uirenderer {
 
-static void storeTexturedRect(TextureVertex* vertices, const Rect& bounds, const Rect& texCoord) {
-    vertices[0] = { bounds.left, bounds.top, texCoord.left, texCoord.top };
-    vertices[1] = { bounds.right, bounds.top, texCoord.right, texCoord.top };
-    vertices[2] = { bounds.left, bounds.bottom, texCoord.left, texCoord.bottom };
-    vertices[3] = { bounds.right, bounds.bottom, texCoord.right, texCoord.bottom };
+static void storeTexturedRect(TextureVertex* vertices, const Rect& bounds) {
+    vertices[0] = { bounds.left,  bounds.top,    0, 0 };
+    vertices[1] = { bounds.right, bounds.top,    1, 0 };
+    vertices[2] = { bounds.left,  bounds.bottom, 0, 1 };
+    vertices[3] = { bounds.right, bounds.bottom, 1, 1 };
 }
 
 void BakedOpDispatcher::onMergedBitmapOps(BakedOpRenderer& renderer,
@@ -48,16 +48,11 @@
     const BakedOpState& firstState = *(opList.states[0]);
     const SkBitmap* bitmap = (static_cast<const BitmapOp*>(opList.states[0]->op))->bitmap;
 
-    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(bitmap->pixelRef());
-    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(bitmap);
+    Texture* texture = renderer.caches().textureCache.get(bitmap);
     if (!texture) return;
     const AutoTexture autoCleanup(texture);
 
     TextureVertex vertices[opList.count * 4];
-    Rect texCoords(0, 0, 1, 1);
-    if (entry) {
-        entry->uvMapper.map(texCoords);
-    }
     for (size_t i = 0; i < opList.count; i++) {
         const BakedOpState& state = *(opList.states[i]);
         TextureVertex* rectVerts = &vertices[i * 4];
@@ -69,7 +64,7 @@
             // pure translate, so snap (same behavior as onBitmapOp)
             opBounds.snapToPixelBoundaries();
         }
-        storeTexturedRect(rectVerts, opBounds, texCoords);
+        storeTexturedRect(rectVerts, opBounds);
         renderer.dirtyRenderTarget(opBounds);
     }
 
@@ -92,8 +87,6 @@
         const MergedBakedOpList& opList) {
     const PatchOp& firstOp = *(static_cast<const PatchOp*>(opList.states[0]->op));
     const BakedOpState& firstState = *(opList.states[0]);
-    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(
-            firstOp.bitmap->pixelRef());
 
     // Batches will usually contain a small number of items so it's
     // worth performing a first iteration to count the exact number
@@ -105,7 +98,7 @@
 
         // TODO: cache mesh lookups
         const Patch* opMesh = renderer.caches().patchCache.get(
-                entry, op.bitmap->width(), op.bitmap->height(),
+                op.bitmap->width(), op.bitmap->height(),
                 op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
         totalVertices += opMesh->verticesCount;
     }
@@ -126,7 +119,7 @@
 
         // TODO: cache mesh lookups
         const Patch* opMesh = renderer.caches().patchCache.get(
-                entry, op.bitmap->width(), op.bitmap->height(),
+                op.bitmap->width(), op.bitmap->height(),
                 op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
 
 
@@ -172,7 +165,7 @@
     }
 
 
-    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(firstOp.bitmap);
+    Texture* texture = renderer.caches().textureCache.get(firstOp.bitmap);
     if (!texture) return;
     const AutoTexture autoCleanup(texture);
 
@@ -442,7 +435,12 @@
 }
 
 void BakedOpDispatcher::onBitmapMeshOp(BakedOpRenderer& renderer, const BitmapMeshOp& op, const BakedOpState& state) {
-    const static UvMapper defaultUvMapper;
+    Texture* texture = renderer.caches().textureCache.get(op.bitmap);
+    if (!texture) {
+        return;
+    }
+    const AutoTexture autoCleanup(texture);
+
     const uint32_t elementCount = op.meshWidth * op.meshHeight * 6;
 
     std::unique_ptr<ColorTextureVertex[]> mesh(new ColorTextureVertex[elementCount]);
@@ -457,9 +455,6 @@
         colors = tempColors.get();
     }
 
-    Texture* texture = renderer.renderState().assetAtlas().getEntryTexture(op.bitmap->pixelRef());
-    const UvMapper& mapper(texture && texture->uvMapper ? *texture->uvMapper : defaultUvMapper);
-
     for (int32_t y = 0; y < op.meshHeight; y++) {
         for (int32_t x = 0; x < op.meshWidth; x++) {
             uint32_t i = (y * (op.meshWidth + 1) + x) * 2;
@@ -469,8 +464,6 @@
             float v1 = float(y) / op.meshHeight;
             float v2 = float(y + 1) / op.meshHeight;
 
-            mapper.map(u1, v1, u2, v2);
-
             int ax = i + (op.meshWidth + 1) * 2;
             int ay = ax + 1;
             int bx = i;
@@ -491,14 +484,6 @@
         }
     }
 
-    if (!texture) {
-        texture = renderer.caches().textureCache.get(op.bitmap);
-        if (!texture) {
-            return;
-        }
-    }
-    const AutoTexture autoCleanup(texture);
-
     /*
      * TODO: handle alpha_8 textures correctly by applying paint color, but *not*
      * shader in that case to mimic the behavior in SkiaCanvas::drawBitmapMesh.
@@ -599,12 +584,11 @@
     }
 
     // TODO: avoid redoing the below work each frame:
-    AssetAtlas::Entry* entry = renderer.renderState().assetAtlas().getEntry(op.bitmap->pixelRef());
     const Patch* mesh = renderer.caches().patchCache.get(
-            entry, op.bitmap->width(), op.bitmap->height(),
+            op.bitmap->width(), op.bitmap->height(),
             op.unmappedBounds.getWidth(), op.unmappedBounds.getHeight(), op.patch);
 
-    Texture* texture = entry ? entry->texture : renderer.caches().textureCache.get(op.bitmap);
+    Texture* texture = renderer.caches().textureCache.get(op.bitmap);
     if (CC_LIKELY(texture)) {
         const AutoTexture autoCleanup(texture);
         Glop glop;
diff --git a/libs/hwui/BakedOpRenderer.cpp b/libs/hwui/BakedOpRenderer.cpp
index 6db345a..ac7a600 100644
--- a/libs/hwui/BakedOpRenderer.cpp
+++ b/libs/hwui/BakedOpRenderer.cpp
@@ -182,11 +182,7 @@
 }
 
 Texture* BakedOpRenderer::getTexture(const SkBitmap* bitmap) {
-    Texture* texture = mRenderState.assetAtlas().getEntryTexture(bitmap->pixelRef());
-    if (!texture) {
-        return mCaches.textureCache.get(bitmap);
-    }
-    return texture;
+    return mCaches.textureCache.get(bitmap);
 }
 
 void BakedOpRenderer::drawRects(const float* rects, int count, const SkPaint* paint) {
diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index 741cdcc..b463e45 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -53,7 +53,6 @@
         : gradientCache(mExtensions)
         , patchCache(renderState)
         , programCache(mExtensions)
-        , dither(*this)
         , mRenderState(&renderState)
         , mInitialized(false) {
     INIT_LOGD("Creating OpenGL renderer caches");
@@ -238,7 +237,6 @@
             gradientCache.clear();
             fontRenderer.clear();
             fboCache.clear();
-            dither.clear();
             // fall through
         case FlushMode::Moderate:
             fontRenderer.flush();
diff --git a/libs/hwui/Caches.h b/libs/hwui/Caches.h
index 344ee71..7c2e78c 100644
--- a/libs/hwui/Caches.h
+++ b/libs/hwui/Caches.h
@@ -16,8 +16,6 @@
 
 #pragma once
 
-#include "AssetAtlas.h"
-#include "Dither.h"
 #include "Extensions.h"
 #include "FboCache.h"
 #include "GammaFontRenderer.h"
@@ -130,6 +128,15 @@
     TextureVertex* getRegionMesh();
 
     /**
+     * Returns the GL RGBA internal format to use for the current device
+     * If the device supports linear blending and needSRGB is true,
+     * this function returns GL_SRGB8_ALPHA8, otherwise it returns GL_RGBA
+     */
+    constexpr GLint rgbaInternalFormat(bool needSRGB = true) const {
+        return extensions().hasSRGB() && needSRGB ? GL_SRGB8_ALPHA8 : GL_RGBA;
+    }
+
+    /**
      * Displays the memory usage of each cache and the total sum.
      */
     void dumpMemoryUsage();
@@ -157,8 +164,6 @@
 
     TaskManager tasks;
 
-    Dither dither;
-
     bool gpuPixelBuffersEnabled;
 
     // Debug methods
@@ -169,7 +174,7 @@
     void setProgram(const ProgramDescription& description);
     void setProgram(Program* program);
 
-    Extensions& extensions() { return mExtensions; }
+    const Extensions& extensions() const { return mExtensions; }
     Program& program() { return *mProgram; }
     PixelBufferState& pixelBufferState() { return *mPixelBufferState; }
     TextureState& textureState() { return *mTextureState; }
diff --git a/libs/hwui/Dither.cpp b/libs/hwui/Dither.cpp
deleted file mode 100644
index ec2013e..0000000
--- a/libs/hwui/Dither.cpp
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Caches.h"
-#include "Dither.h"
-
-namespace android {
-namespace uirenderer {
-
-///////////////////////////////////////////////////////////////////////////////
-// Lifecycle
-///////////////////////////////////////////////////////////////////////////////
-
-Dither::Dither(Caches& caches)
-        : mCaches(caches)
-        , mInitialized(false)
-        , mDitherTexture(0) {
-}
-
-void Dither::bindDitherTexture() {
-    if (!mInitialized) {
-        glGenTextures(1, &mDitherTexture);
-        mCaches.textureState().bindTexture(mDitherTexture);
-
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-
-        if (mCaches.extensions().hasFloatTextures()) {
-            // We use a R16F texture, let's remap the alpha channel to the
-            // red channel to avoid changing the shader sampling code on GL ES 3.0+
-            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_RED);
-
-            float dither = 1.0f / (255.0f * DITHER_KERNEL_SIZE * DITHER_KERNEL_SIZE);
-            const GLfloat pattern[] = {
-                 0 * dither,  8 * dither,  2 * dither, 10 * dither,
-                12 * dither,  4 * dither, 14 * dither,  6 * dither,
-                 3 * dither, 11 * dither,  1 * dither,  9 * dither,
-                15 * dither,  7 * dither, 13 * dither,  5 * dither
-            };
-
-            glTexImage2D(GL_TEXTURE_2D, 0, GL_R16F, DITHER_KERNEL_SIZE, DITHER_KERNEL_SIZE, 0,
-                    GL_RED, GL_FLOAT, &pattern);
-        } else {
-            const uint8_t pattern[] = {
-                 0,  8,  2, 10,
-                12,  4, 14,  6,
-                 3, 11,  1,  9,
-                15,  7, 13,  5
-            };
-
-            glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DITHER_KERNEL_SIZE, DITHER_KERNEL_SIZE, 0,
-                    GL_ALPHA, GL_UNSIGNED_BYTE, &pattern);
-        }
-
-        mInitialized = true;
-    } else {
-        mCaches.textureState().bindTexture(mDitherTexture);
-    }
-}
-
-void Dither::clear() {
-    if (mInitialized) {
-        mCaches.textureState().deleteTexture(mDitherTexture);
-        mInitialized = false;
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// Program management
-///////////////////////////////////////////////////////////////////////////////
-
-void Dither::setupProgram(Program& program, GLuint* textureUnit) {
-    GLuint textureSlot = (*textureUnit)++;
-    mCaches.textureState().activateTexture(textureSlot);
-
-    bindDitherTexture();
-
-    glUniform1i(program.getUniform("ditherSampler"), textureSlot);
-}
-
-}; // namespace uirenderer
-}; // namespace android
diff --git a/libs/hwui/Dither.h b/libs/hwui/Dither.h
deleted file mode 100644
index 6af3e83..0000000
--- a/libs/hwui/Dither.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HWUI_DITHER_H
-#define ANDROID_HWUI_DITHER_H
-
-#include <GLES3/gl3.h>
-
-namespace android {
-namespace uirenderer {
-
-class Caches;
-class Extensions;
-class Program;
-
-// Must be a power of two
-#define DITHER_KERNEL_SIZE 4
-// These must not use the .0f notation as they are used from GLSL
-#define DITHER_KERNEL_SIZE_INV (1.0 / 4.0)
-#define DITHER_KERNEL_SIZE_INV_SQUARE (1.0 / 16.0)
-
-/**
- * Handles dithering for programs.
- */
-class Dither {
-public:
-    explicit Dither(Caches& caches);
-
-    void clear();
-    void setupProgram(Program& program, GLuint* textureUnit);
-
-private:
-    void bindDitherTexture();
-
-    Caches& mCaches;
-    bool mInitialized;
-    GLuint mDitherTexture;
-};
-
-}; // namespace uirenderer
-}; // namespace android
-
-#endif // ANDROID_HWUI_DITHER_H
diff --git a/libs/hwui/Extensions.cpp b/libs/hwui/Extensions.cpp
index 02caaa4..4dc7536 100644
--- a/libs/hwui/Extensions.cpp
+++ b/libs/hwui/Extensions.cpp
@@ -22,6 +22,7 @@
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
+
 #include <utils/Log.h>
 
 namespace android {
@@ -44,6 +45,14 @@
     mHas1BitStencil = extensions.has("GL_OES_stencil1");
     mHas4BitStencil = extensions.has("GL_OES_stencil4");
     mHasUnpackSubImage = extensions.has("GL_EXT_unpack_subimage");
+    mHasSRGB = extensions.has("GL_EXT_sRGB");
+    mHasSRGBWriteControl = extensions.has("GL_EXT_sRGB_write_control");
+
+    // If linear blending is enabled, the device must have ES3.0 and GL_EXT_sRGB_write_control
+#ifdef ANDROID_ENABLE_LINEAR_BLENDING
+    assert(mVersionMajor >= 3 || mHasSRGB);
+    assert(mHasSRGBWriteControl);
+#endif
 
     const char* version = (const char*) glGetString(GL_VERSION);
 
diff --git a/libs/hwui/Extensions.h b/libs/hwui/Extensions.h
index 67cc747..cc73c23 100644
--- a/libs/hwui/Extensions.h
+++ b/libs/hwui/Extensions.h
@@ -43,6 +43,8 @@
     inline bool hasPixelBufferObjects() const { return mVersionMajor >= 3; }
     inline bool hasOcclusionQueries() const { return mVersionMajor >= 3; }
     inline bool hasFloatTextures() const { return mVersionMajor >= 3; }
+    inline bool hasSRGB() const { return mVersionMajor >= 3 || mHasSRGB; }
+    inline bool hasSRGBWriteControl() const { return hasSRGB() && mHasSRGBWriteControl; }
 
     inline int getMajorGlVersion() const { return mVersionMajor; }
     inline int getMinorGlVersion() const { return mVersionMinor; }
@@ -55,6 +57,8 @@
     bool mHas1BitStencil;
     bool mHas4BitStencil;
     bool mHasUnpackSubImage;
+    bool mHasSRGB;
+    bool mHasSRGBWriteControl;
 
     int mVersionMajor;
     int mVersionMinor;
diff --git a/libs/hwui/FloatColor.h b/libs/hwui/FloatColor.h
index 9a39ec2..6d19b7c 100644
--- a/libs/hwui/FloatColor.h
+++ b/libs/hwui/FloatColor.h
@@ -16,6 +16,7 @@
 #ifndef FLOATCOLOR_H
 #define FLOATCOLOR_H
 
+#include "utils/Color.h"
 #include "utils/Macros.h"
 #include "utils/MathUtils.h"
 
@@ -25,11 +26,13 @@
 namespace uirenderer {
 
 struct FloatColor {
+    // "color" is a gamma-encoded sRGB color
+    // After calling this method, the color is stored as a pre-multiplied linear color
     void set(uint32_t color) {
         a = ((color >> 24) & 0xff) / 255.0f;
-        r = a * ((color >> 16) & 0xff) / 255.0f;
-        g = a * ((color >>  8) & 0xff) / 255.0f;
-        b = a * ((color      ) & 0xff) / 255.0f;
+        r = a * EOCF_sRGB(((color >> 16) & 0xff) / 255.0f);
+        g = a * EOCF_sRGB(((color >>  8) & 0xff) / 255.0f);
+        b = a * EOCF_sRGB(((color      ) & 0xff) / 255.0f);
     }
 
     bool isNotBlack() {
diff --git a/libs/hwui/FontRenderer.cpp b/libs/hwui/FontRenderer.cpp
index 9b60dfc..effc65e 100644
--- a/libs/hwui/FontRenderer.cpp
+++ b/libs/hwui/FontRenderer.cpp
@@ -60,11 +60,17 @@
     }
     int transformFlags = pureTranslate
             ? TransformFlags::MeshIgnoresCanvasTransform : TransformFlags::None;
+#ifdef ANDROID_ENABLE_LINEAR_BLENDING
+    bool gammaCorrection = true;
+#else
+    bool gammaCorrection = false;
+#endif
     Glop glop;
     GlopBuilder(renderer->renderState(), renderer->caches(), &glop)
             .setRoundRectClipState(bakedState->roundRectClipState)
             .setMeshTexturedIndexedQuads(texture.mesh(), texture.meshElementCount())
             .setFillTexturePaint(texture.getTexture(), textureFillFlags, paint, bakedState->alpha)
+            .setGammaCorrection(gammaCorrection)
             .setTransform(bakedState->computedState.transform, transformFlags)
             .setModelViewIdentityEmptyBounds()
             .build();
@@ -287,24 +293,23 @@
     // Copy the glyph image, taking the mask format into account
     switch (format) {
         case SkMask::kA8_Format: {
-            uint32_t cacheX = 0, bX = 0, cacheY = 0, bY = 0;
             uint32_t row = (startY - TEXTURE_BORDER_SIZE) * cacheWidth + startX
                     - TEXTURE_BORDER_SIZE;
             // write leading border line
             memset(&cacheBuffer[row], 0, glyph.fWidth + 2 * TEXTURE_BORDER_SIZE);
             // write glyph data
             if (mGammaTable) {
-                for (cacheY = startY, bY = 0; cacheY < endY; cacheY++, bY += srcStride) {
+                for (uint32_t cacheY = startY, bY = 0; cacheY < endY; cacheY++, bY += srcStride) {
                     row = cacheY * cacheWidth;
                     cacheBuffer[row + startX - TEXTURE_BORDER_SIZE] = 0;
-                    for (cacheX = startX, bX = 0; cacheX < endX; cacheX++, bX++) {
+                    for (uint32_t cacheX = startX, bX = 0; cacheX < endX; cacheX++, bX++) {
                         uint8_t tempCol = bitmapBuffer[bY + bX];
                         cacheBuffer[row + cacheX] = mGammaTable[tempCol];
                     }
                     cacheBuffer[row + endX + TEXTURE_BORDER_SIZE - 1] = 0;
                 }
             } else {
-                for (cacheY = startY, bY = 0; cacheY < endY; cacheY++, bY += srcStride) {
+                for (uint32_t cacheY = startY, bY = 0; cacheY < endY; cacheY++, bY += srcStride) {
                     row = cacheY * cacheWidth;
                     memcpy(&cacheBuffer[row + startX], &bitmapBuffer[bY], glyph.fWidth);
                     cacheBuffer[row + startX - TEXTURE_BORDER_SIZE] = 0;
diff --git a/libs/hwui/FrameBuilder.cpp b/libs/hwui/FrameBuilder.cpp
index be4fdac..17ad0e3 100644
--- a/libs/hwui/FrameBuilder.cpp
+++ b/libs/hwui/FrameBuilder.cpp
@@ -612,7 +612,6 @@
             && op.bitmap->colorType() != kAlpha_8_SkColorType
             && hasMergeableClip(*bakedState)) {
         mergeid_t mergeId = reinterpret_cast<mergeid_t>(op.bitmap->getGenerationID());
-        // TODO: AssetAtlas in mergeId
         currentLayer().deferMergeableOp(mAllocator, bakedState, OpBatchType::Bitmap, mergeId);
     } else {
         currentLayer().deferUnmergeableOp(mAllocator, bakedState, OpBatchType::Bitmap);
@@ -687,7 +686,6 @@
             && PaintUtils::getXfermodeDirect(op.paint) == SkXfermode::kSrcOver_Mode
             && hasMergeableClip(*bakedState)) {
         mergeid_t mergeId = reinterpret_cast<mergeid_t>(op.bitmap->getGenerationID());
-        // TODO: AssetAtlas in mergeId
 
         // Only use the MergedPatch batchId when merged, so Bitmap+Patch don't try to merge together
         currentLayer().deferMergeableOp(mAllocator, bakedState, OpBatchType::MergedPatch, mergeId);
diff --git a/libs/hwui/GammaFontRenderer.cpp b/libs/hwui/GammaFontRenderer.cpp
index 96cac86..8aff0a2 100644
--- a/libs/hwui/GammaFontRenderer.cpp
+++ b/libs/hwui/GammaFontRenderer.cpp
@@ -24,12 +24,13 @@
 GammaFontRenderer::GammaFontRenderer() {
     INIT_LOGD("Creating lookup gamma font renderer");
 
+#ifndef ANDROID_ENABLE_LINEAR_BLENDING
     // Compute the gamma tables
     const float gamma = 1.0f / Properties::textGamma;
-
     for (uint32_t i = 0; i <= 255; i++) {
         mGammaTable[i] = uint8_t((float)::floor(pow(i / 255.0f, gamma) * 255.0f + 0.5f));
     }
+#endif
 }
 
 void GammaFontRenderer::endPrecaching() {
diff --git a/libs/hwui/GammaFontRenderer.h b/libs/hwui/GammaFontRenderer.h
index bd27a1a..c9cf69b 100644
--- a/libs/hwui/GammaFontRenderer.h
+++ b/libs/hwui/GammaFontRenderer.h
@@ -18,11 +18,6 @@
 #define ANDROID_HWUI_GAMMA_FONT_RENDERER_H
 
 #include "FontRenderer.h"
-#include "Program.h"
-
-#include <SkPaint.h>
-
-#include <utils/String8.h>
 
 namespace android {
 namespace uirenderer {
@@ -43,7 +38,11 @@
 
     FontRenderer& getFontRenderer() {
         if (!mRenderer) {
-            mRenderer.reset(new FontRenderer(&mGammaTable[0]));
+            const uint8_t* table = nullptr;
+#ifndef ANDROID_ENABLE_LINEAR_BLENDING
+            table = &mGammaTable[0];
+#endif
+            mRenderer.reset(new FontRenderer(table));
         }
         return *mRenderer;
     }
@@ -64,7 +63,9 @@
 
 private:
     std::unique_ptr<FontRenderer> mRenderer;
+#ifndef ANDROID_ENABLE_LINEAR_BLENDING
     uint8_t mGammaTable[256];
+#endif
 };
 
 }; // namespace uirenderer
diff --git a/libs/hwui/GlopBuilder.cpp b/libs/hwui/GlopBuilder.cpp
index 1091736..ff88d02 100644
--- a/libs/hwui/GlopBuilder.cpp
+++ b/libs/hwui/GlopBuilder.cpp
@@ -223,16 +223,16 @@
         SkXfermode::Mode mode, Blend::ModeOrderSwap modeUsage,
         const SkShader* shader, const SkColorFilter* colorFilter) {
     if (mode != SkXfermode::kClear_Mode) {
-        float alpha = (SkColorGetA(color) / 255.0f) * alphaScale;
         if (!shader) {
-            float colorScale = alpha / 255.0f;
-            mOutGlop->fill.color = {
-                    colorScale * SkColorGetR(color),
-                    colorScale * SkColorGetG(color),
-                    colorScale * SkColorGetB(color),
-                    alpha
-            };
+            FloatColor c;
+            c.set(color);
+            c.r *= alphaScale;
+            c.g *= alphaScale;
+            c.b *= alphaScale;
+            c.a *= alphaScale;
+            mOutGlop->fill.color = c;
         } else {
+            float alpha = (SkColorGetA(color) / 255.0f) * alphaScale;
             mOutGlop->fill.color = { 1, 1, 1, alpha };
         }
     } else {
@@ -276,15 +276,7 @@
         if (colorFilter->asColorMode(&color, &mode)) {
             mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Blend;
             mDescription.colorMode = mode;
-
-            const float alpha = SkColorGetA(color) / 255.0f;
-            float colorScale = alpha / 255.0f;
-            mOutGlop->fill.filter.color = {
-                    colorScale * SkColorGetR(color),
-                    colorScale * SkColorGetG(color),
-                    colorScale * SkColorGetB(color),
-                    alpha,
-            };
+            mOutGlop->fill.filter.color.set(color);
         } else if (colorFilter->asColorMatrix(srcColorMatrix)) {
             mOutGlop->fill.filterMode = mDescription.colorOp = ProgramDescription::ColorFilterMode::Matrix;
 
@@ -297,10 +289,10 @@
             // Skia uses the range [0..255] for the addition vector, but we need
             // the [0..1] range to apply the vector in GLSL
             float* colorVector = mOutGlop->fill.filter.matrix.vector;
-            colorVector[0] = srcColorMatrix[4] / 255.0f;
-            colorVector[1] = srcColorMatrix[9] / 255.0f;
-            colorVector[2] = srcColorMatrix[14] / 255.0f;
-            colorVector[3] = srcColorMatrix[19] / 255.0f;
+            colorVector[0] = EOCF_sRGB(srcColorMatrix[4]  / 255.0f);
+            colorVector[1] = EOCF_sRGB(srcColorMatrix[9]  / 255.0f);
+            colorVector[2] = EOCF_sRGB(srcColorMatrix[14] / 255.0f);
+            colorVector[3] = EOCF_sRGB(srcColorMatrix[19] / 255.0f);
         } else {
             LOG_ALWAYS_FATAL("unsupported ColorFilter");
         }
@@ -481,6 +473,13 @@
     return *this;
 }
 
+GlopBuilder& GlopBuilder::setGammaCorrection(bool enabled) {
+    REQUIRE_STAGES(kFillStage);
+
+    mDescription.hasGammaCorrection = enabled;
+    return *this;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Transform
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/libs/hwui/GlopBuilder.h b/libs/hwui/GlopBuilder.h
index 1152461..1f3b53a 100644
--- a/libs/hwui/GlopBuilder.h
+++ b/libs/hwui/GlopBuilder.h
@@ -105,6 +105,8 @@
 
     GlopBuilder& setRoundRectClipState(const RoundRectClipState* roundRectClipState);
 
+    GlopBuilder& setGammaCorrection(bool enabled);
+
     void build();
 
     static void dump(const Glop& glop);
diff --git a/libs/hwui/GradientCache.cpp b/libs/hwui/GradientCache.cpp
index c8f5e94..8573ab0 100644
--- a/libs/hwui/GradientCache.cpp
+++ b/libs/hwui/GradientCache.cpp
@@ -67,7 +67,8 @@
         , mSize(0)
         , mMaxSize(Properties::gradientCacheSize)
         , mUseFloatTexture(extensions.hasFloatTextures())
-        , mHasNpot(extensions.hasNPot()){
+        , mHasNpot(extensions.hasNPot())
+        , mHasSRGB(extensions.hasSRGB()) {
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
 
     mCache.setOnEntryRemovedListener(this);
@@ -176,71 +177,50 @@
 
 size_t GradientCache::bytesPerPixel() const {
     // We use 4 channels (RGBA)
+    return 4 * (mUseFloatTexture ? /* fp16 */ 2 : sizeof(uint8_t));
+}
+
+size_t GradientCache::sourceBytesPerPixel() const {
+    // We use 4 channels (RGBA) and upload from floats (not half floats)
     return 4 * (mUseFloatTexture ? sizeof(float) : sizeof(uint8_t));
 }
 
-void GradientCache::splitToBytes(uint32_t inColor, GradientColor& outColor) const {
-    outColor.r = (inColor >> 16) & 0xff;
-    outColor.g = (inColor >>  8) & 0xff;
-    outColor.b = (inColor >>  0) & 0xff;
-    outColor.a = (inColor >> 24) & 0xff;
-}
-
-void GradientCache::splitToFloats(uint32_t inColor, GradientColor& outColor) const {
-    outColor.r = ((inColor >> 16) & 0xff) / 255.0f;
-    outColor.g = ((inColor >>  8) & 0xff) / 255.0f;
-    outColor.b = ((inColor >>  0) & 0xff) / 255.0f;
-    outColor.a = ((inColor >> 24) & 0xff) / 255.0f;
-}
-
-void GradientCache::mixBytes(GradientColor& start, GradientColor& end, float amount,
+void GradientCache::mixBytes(FloatColor& start, FloatColor& end, float amount,
         uint8_t*& dst) const {
     float oppAmount = 1.0f - amount;
-    const float alpha = start.a * oppAmount + end.a * amount;
-    const float a = alpha / 255.0f;
-
-    *dst++ = uint8_t(a * (start.r * oppAmount + end.r * amount));
-    *dst++ = uint8_t(a * (start.g * oppAmount + end.g * amount));
-    *dst++ = uint8_t(a * (start.b * oppAmount + end.b * amount));
-    *dst++ = uint8_t(alpha);
+    *dst++ = uint8_t(OECF_sRGB((start.r * oppAmount + end.r * amount) * 255.0f));
+    *dst++ = uint8_t(OECF_sRGB((start.g * oppAmount + end.g * amount) * 255.0f));
+    *dst++ = uint8_t(OECF_sRGB((start.b * oppAmount + end.b * amount) * 255.0f));
+    *dst++ = uint8_t(          (start.a * oppAmount + end.a * amount) * 255.0f);
 }
 
-void GradientCache::mixFloats(GradientColor& start, GradientColor& end, float amount,
+void GradientCache::mixFloats(FloatColor& start, FloatColor& end, float amount,
         uint8_t*& dst) const {
     float oppAmount = 1.0f - amount;
-    const float a = start.a * oppAmount + end.a * amount;
-
     float* d = (float*) dst;
-    *d++ = a * (start.r * oppAmount + end.r * amount);
-    *d++ = a * (start.g * oppAmount + end.g * amount);
-    *d++ = a * (start.b * oppAmount + end.b * amount);
-    *d++ = a;
-
+    *d++ = start.r * oppAmount + end.r * amount;
+    *d++ = start.g * oppAmount + end.g * amount;
+    *d++ = start.b * oppAmount + end.b * amount;
+    *d++ = start.a * oppAmount + end.a * amount;
     dst += 4 * sizeof(float);
 }
 
 void GradientCache::generateTexture(uint32_t* colors, float* positions,
         const uint32_t width, const uint32_t height, Texture* texture) {
-    const GLsizei rowBytes = width * bytesPerPixel();
+    const GLsizei rowBytes = width * sourceBytesPerPixel();
     uint8_t pixels[rowBytes * height];
 
-    static ChannelSplitter gSplitters[] = {
-            &android::uirenderer::GradientCache::splitToBytes,
-            &android::uirenderer::GradientCache::splitToFloats,
-    };
-    ChannelSplitter split = gSplitters[mUseFloatTexture];
-
     static ChannelMixer gMixers[] = {
-            &android::uirenderer::GradientCache::mixBytes,
-            &android::uirenderer::GradientCache::mixFloats,
+            &android::uirenderer::GradientCache::mixBytes,  // colors are stored gamma-encoded
+            &android::uirenderer::GradientCache::mixFloats, // colors are stored in linear
     };
     ChannelMixer mix = gMixers[mUseFloatTexture];
 
-    GradientColor start;
-    (this->*split)(colors[0], start);
+    FloatColor start;
+    start.set(colors[0]);
 
-    GradientColor end;
-    (this->*split)(colors[1], end);
+    FloatColor end;
+    end.set(colors[1]);
 
     int currentPos = 1;
     float startPos = positions[0];
@@ -255,7 +235,7 @@
 
             currentPos++;
 
-            (this->*split)(colors[currentPos], end);
+            end.set(colors[currentPos]);
             distance = positions[currentPos] - startPos;
         }
 
@@ -266,10 +246,10 @@
     memcpy(pixels + rowBytes, pixels, rowBytes);
 
     if (mUseFloatTexture) {
-        // We have to use GL_RGBA16F because GL_RGBA32F does not support filtering
         texture->upload(GL_RGBA16F, width, height, GL_RGBA, GL_FLOAT, pixels);
     } else {
-        texture->upload(GL_RGBA, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+        GLint internalFormat = mHasSRGB ? GL_SRGB8_ALPHA8 : GL_RGBA;
+        texture->upload(internalFormat, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
     }
 
     texture->setFilter(GL_LINEAR);
diff --git a/libs/hwui/GradientCache.h b/libs/hwui/GradientCache.h
index 49be19a..3fd8e80 100644
--- a/libs/hwui/GradientCache.h
+++ b/libs/hwui/GradientCache.h
@@ -26,6 +26,8 @@
 #include <utils/LruCache.h>
 #include <utils/Mutex.h>
 
+#include "FloatColor.h"
+
 namespace android {
 namespace uirenderer {
 
@@ -150,25 +152,13 @@
     void getGradientInfo(const uint32_t* colors, const int count, GradientInfo& info);
 
     size_t bytesPerPixel() const;
+    size_t sourceBytesPerPixel() const;
 
-    struct GradientColor {
-        float r;
-        float g;
-        float b;
-        float a;
-    };
-
-    typedef void (GradientCache::*ChannelSplitter)(uint32_t inColor,
-            GradientColor& outColor) const;
-
-    void splitToBytes(uint32_t inColor, GradientColor& outColor) const;
-    void splitToFloats(uint32_t inColor, GradientColor& outColor) const;
-
-    typedef void (GradientCache::*ChannelMixer)(GradientColor& start, GradientColor& end,
+    typedef void (GradientCache::*ChannelMixer)(FloatColor& start, FloatColor& end,
             float amount, uint8_t*& dst) const;
 
-    void mixBytes(GradientColor& start, GradientColor& end, float amount, uint8_t*& dst) const;
-    void mixFloats(GradientColor& start, GradientColor& end, float amount, uint8_t*& dst) const;
+    void mixBytes(FloatColor& start, FloatColor& end, float amount, uint8_t*& dst) const;
+    void mixFloats(FloatColor& start, FloatColor& end, float amount, uint8_t*& dst) const;
 
     LruCache<GradientCacheEntry, Texture*> mCache;
 
@@ -178,6 +168,7 @@
     GLint mMaxTextureSize;
     bool mUseFloatTexture;
     bool mHasNpot;
+    bool mHasSRGB;
 
     mutable Mutex mLock;
 }; // class GradientCache
diff --git a/libs/hwui/Layer.h b/libs/hwui/Layer.h
index c688a96..01650ef 100644
--- a/libs/hwui/Layer.h
+++ b/libs/hwui/Layer.h
@@ -75,7 +75,7 @@
     }
 
     void setSize(uint32_t width, uint32_t height) {
-        texture.updateSize(width, height, texture.format());
+        texture.updateSize(width, height, texture.internalFormat(), texture.format());
     }
 
     inline void setBlend(bool blend) {
diff --git a/libs/hwui/PatchCache.cpp b/libs/hwui/PatchCache.cpp
index a6c281d..52c62cc 100644
--- a/libs/hwui/PatchCache.cpp
+++ b/libs/hwui/PatchCache.cpp
@@ -225,17 +225,15 @@
 
 static const UvMapper sIdentity;
 
-const Patch* PatchCache::get(const AssetAtlas::Entry* entry,
-        const uint32_t bitmapWidth, const uint32_t bitmapHeight,
+const Patch* PatchCache::get( const uint32_t bitmapWidth, const uint32_t bitmapHeight,
         const float pixelWidth, const float pixelHeight, const Res_png_9patch* patch) {
 
     const PatchDescription description(bitmapWidth, bitmapHeight, pixelWidth, pixelHeight, patch);
     const Patch* mesh = mCache.get(description);
 
     if (!mesh) {
-        const UvMapper& mapper = entry ? entry->uvMapper : sIdentity;
         Patch* newMesh = new Patch(bitmapWidth, bitmapHeight,
-                pixelWidth, pixelHeight, mapper, patch);
+                pixelWidth, pixelHeight, sIdentity, patch);
 
         if (newMesh->vertices) {
             setupMesh(newMesh);
diff --git a/libs/hwui/PatchCache.h b/libs/hwui/PatchCache.h
index 6e6a730..0624c35 100644
--- a/libs/hwui/PatchCache.h
+++ b/libs/hwui/PatchCache.h
@@ -22,7 +22,6 @@
 
 #include <androidfw/ResourceTypes.h>
 
-#include "AssetAtlas.h"
 #include "Debug.h"
 #include "utils/Pair.h"
 
@@ -54,8 +53,7 @@
     explicit PatchCache(RenderState& renderState);
     ~PatchCache();
 
-    const Patch* get(const AssetAtlas::Entry* entry,
-            const uint32_t bitmapWidth, const uint32_t bitmapHeight,
+    const Patch* get(const uint32_t bitmapWidth, const uint32_t bitmapHeight,
             const float pixelWidth, const float pixelHeight, const Res_png_9patch* patch);
     void clear();
 
diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index e5200a5..f5beb62 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -85,6 +85,8 @@
 #define PROGRAM_HAS_DEBUG_HIGHLIGHT 42
 #define PROGRAM_HAS_ROUND_RECT_CLIP 43
 
+#define PROGRAM_HAS_GAMMA_CORRECTION 44
+
 ///////////////////////////////////////////////////////////////////////////////
 // Types
 ///////////////////////////////////////////////////////////////////////////////
@@ -158,6 +160,8 @@
     bool hasDebugHighlight;
     bool hasRoundRectClip;
 
+    bool hasGammaCorrection;
+
     /**
      * Resets this description. All fields are reset back to the default
      * values they hold after building a new instance.
@@ -196,6 +200,8 @@
 
         hasDebugHighlight = false;
         hasRoundRectClip = false;
+
+        hasGammaCorrection = false;
     }
 
     /**
@@ -262,6 +268,7 @@
         if (hasColors) key |= programid(0x1) << PROGRAM_HAS_COLORS;
         if (hasDebugHighlight) key |= programid(0x1) << PROGRAM_HAS_DEBUG_HIGHLIGHT;
         if (hasRoundRectClip) key |= programid(0x1) << PROGRAM_HAS_ROUND_RECT_CLIP;
+        if (hasGammaCorrection) key |= programid(0x1) << PROGRAM_HAS_GAMMA_CORRECTION;
         return key;
     }
 
diff --git a/libs/hwui/ProgramCache.cpp b/libs/hwui/ProgramCache.cpp
index 59225e1..315c60e 100644
--- a/libs/hwui/ProgramCache.cpp
+++ b/libs/hwui/ProgramCache.cpp
@@ -17,8 +17,8 @@
 #include <utils/String8.h>
 
 #include "Caches.h"
-#include "Dither.h"
 #include "ProgramCache.h"
+#include "Properties.h"
 
 namespace android {
 namespace uirenderer {
@@ -69,22 +69,16 @@
         "varying highp vec2 outBitmapTexCoords;\n";
 const char* gVS_Header_Varyings_HasGradient[6] = {
         // Linear
-        "varying highp vec2 linear;\n"
-        "varying vec2 ditherTexCoords;\n",
-        "varying float linear;\n"
-        "varying vec2 ditherTexCoords;\n",
+        "varying highp vec2 linear;\n",
+        "varying float linear;\n",
 
         // Circular
-        "varying highp vec2 circular;\n"
-        "varying vec2 ditherTexCoords;\n",
-        "varying highp vec2 circular;\n"
-        "varying vec2 ditherTexCoords;\n",
+        "varying highp vec2 circular;\n",
+        "varying highp vec2 circular;\n",
 
         // Sweep
-        "varying highp vec2 sweep;\n"
-        "varying vec2 ditherTexCoords;\n",
-        "varying highp vec2 sweep;\n"
-        "varying vec2 ditherTexCoords;\n",
+        "varying highp vec2 sweep;\n",
+        "varying highp vec2 sweep;\n",
 };
 const char* gVS_Header_Varyings_HasRoundRectClip =
         "varying highp vec2 roundRectPos;\n";
@@ -98,22 +92,16 @@
         "    outTexCoords = (mainTextureTransform * vec4(texCoords, 0.0, 1.0)).xy;\n";
 const char* gVS_Main_OutGradient[6] = {
         // Linear
-        "    linear = vec2((screenSpace * position).x, 0.5);\n"
-        "    ditherTexCoords = (transform * position).xy * " STR(DITHER_KERNEL_SIZE_INV) ";\n",
-        "    linear = (screenSpace * position).x;\n"
-        "    ditherTexCoords = (transform * position).xy * " STR(DITHER_KERNEL_SIZE_INV) ";\n",
+        "    linear = vec2((screenSpace * position).x, 0.5);\n",
+        "    linear = (screenSpace * position).x;\n",
 
         // Circular
-        "    circular = (screenSpace * position).xy;\n"
-        "    ditherTexCoords = (transform * position).xy * " STR(DITHER_KERNEL_SIZE_INV) ";\n",
-        "    circular = (screenSpace * position).xy;\n"
-        "    ditherTexCoords = (transform * position).xy * " STR(DITHER_KERNEL_SIZE_INV) ";\n",
+        "    circular = (screenSpace * position).xy;\n",
+        "    circular = (screenSpace * position).xy;\n",
 
         // Sweep
+        "    sweep = (screenSpace * position).xy;\n",
         "    sweep = (screenSpace * position).xy;\n"
-        "    ditherTexCoords = (transform * position).xy * " STR(DITHER_KERNEL_SIZE_INV) ";\n",
-        "    sweep = (screenSpace * position).xy;\n"
-        "    ditherTexCoords = (transform * position).xy * " STR(DITHER_KERNEL_SIZE_INV) ";\n",
 };
 const char* gVS_Main_OutBitmapTexCoords =
         "    outBitmapTexCoords = (textureTransform * position).xy * textureDimension;\n";
@@ -147,12 +135,11 @@
         "uniform sampler2D baseSampler;\n";
 const char* gFS_Uniforms_ExternalTextureSampler =
         "uniform samplerExternalOES baseSampler;\n";
-const char* gFS_Uniforms_Dither =
-        "uniform sampler2D ditherSampler;";
 const char* gFS_Uniforms_GradientSampler[2] = {
-        "%s\n"
+        "uniform vec2 screenSize;\n"
         "uniform sampler2D gradientSampler;\n",
-        "%s\n"
+
+        "uniform vec2 screenSize;\n"
         "uniform vec4 startColor;\n"
         "uniform vec4 endColor;\n"
 };
@@ -172,18 +159,51 @@
         "uniform vec4 roundRectInnerRectLTRB;\n"
         "uniform float roundRectRadius;\n";
 
+// Dithering must be done in the quantization space
+// When we are writing to an sRGB framebuffer, we must do the following:
+//     EOCF(OECF(color) + dither)
+// We approximate the transfer functions with gamma 2.0 to avoid branches and pow()
+// The dithering pattern is generated with a triangle noise generator in the range [-0.5,1.5[
+// TODO: Handle linear fp16 render targets
+const char* gFS_Dither_Functions =
+        "\nmediump float triangleNoise(const highp vec2 n) {\n"
+        "    highp vec2 p = fract(n * vec2(5.3987, 5.4421));\n"
+        "    p += dot(p.yx, p.xy + vec2(21.5351, 14.3137));\n"
+        "    highp float xy = p.x * p.y;\n"
+        "    return fract(xy * 95.4307) + fract(xy * 75.04961) - 0.5;\n"
+        "}\n";
+const char* gFS_Dither_Preamble[2] = {
+        // Linear framebuffer
+        "\nvec4 dither(const vec4 color) {\n"
+        "    return vec4(color.rgb + (triangleNoise(gl_FragCoord.xy * screenSize.xy) / 255.0), color.a);"
+        "}\n",
+        // sRGB framebuffer
+        "\nvec4 dither(const vec4 color) {\n"
+        "    vec3 dithered = sqrt(color.rgb) + (triangleNoise(gl_FragCoord.xy * screenSize.xy) / 255.0);\n"
+        "    return vec4(dithered * dithered, color.a);\n"
+        "}\n"
+};
+
+// Uses luminance coefficients from Rec.709 to choose the appropriate gamma
+// The gamma() function assumes that bright text will be displayed on a dark
+// background and that dark text will be displayed on bright background
+// The gamma coefficient is chosen to thicken or thin the text accordingly
+// The dot product used to compute the luminance could be approximated with
+// a simple max(color.r, color.g, color.b)
+const char* gFS_Gamma_Preamble =
+        "\n#define GAMMA (%.2f)\n"
+        "#define GAMMA_INV (%.2f)\n"
+        "\nfloat gamma(float a, const vec3 color) {\n"
+        "    float luminance = dot(color, vec3(0.2126, 0.7152, 0.0722));\n"
+        "    return pow(a, luminance < 0.5 ? GAMMA_INV : GAMMA);\n"
+        "}\n";
+
 const char* gFS_Main =
         "\nvoid main(void) {\n"
-        "    lowp vec4 fragColor;\n";
+        "    vec4 fragColor;\n";
 
-const char* gFS_Main_Dither[2] = {
-        // ES 2.0
-        "texture2D(ditherSampler, ditherTexCoords).a * " STR(DITHER_KERNEL_SIZE_INV_SQUARE),
-        // ES 3.0
-        "texture2D(ditherSampler, ditherTexCoords).a"
-};
-const char* gFS_Main_AddDitherToGradient =
-        "    gradientColor += %s;\n";
+const char* gFS_Main_AddDither =
+        "    fragColor = dither(fragColor);\n";
 
 // Fast cases
 const char* gFS_Fast_SingleColor =
@@ -202,24 +222,32 @@
         "\nvoid main(void) {\n"
         "    gl_FragColor = texture2D(baseSampler, outTexCoords);\n"
         "}\n\n";
+const char* gFS_Fast_SingleA8Texture_ApplyGamma =
+        "\nvoid main(void) {\n"
+        "    gl_FragColor = vec4(0.0, 0.0, 0.0, pow(texture2D(baseSampler, outTexCoords).a, GAMMA));\n"
+        "}\n\n";
 const char* gFS_Fast_SingleModulateA8Texture =
         "\nvoid main(void) {\n"
         "    gl_FragColor = color * texture2D(baseSampler, outTexCoords).a;\n"
         "}\n\n";
+const char* gFS_Fast_SingleModulateA8Texture_ApplyGamma =
+        "\nvoid main(void) {\n"
+        "    gl_FragColor = color * gamma(texture2D(baseSampler, outTexCoords).a, color.rgb);\n"
+        "}\n\n";
 const char* gFS_Fast_SingleGradient[2] = {
         "\nvoid main(void) {\n"
-        "    gl_FragColor = %s + texture2D(gradientSampler, linear);\n"
+        "    gl_FragColor = dither(texture2D(gradientSampler, linear));\n"
         "}\n\n",
         "\nvoid main(void) {\n"
-        "    gl_FragColor = %s + mix(startColor, endColor, clamp(linear, 0.0, 1.0));\n"
+        "    gl_FragColor = dither(mix(startColor, endColor, clamp(linear, 0.0, 1.0)));\n"
         "}\n\n",
 };
 const char* gFS_Fast_SingleModulateGradient[2] = {
         "\nvoid main(void) {\n"
-        "    gl_FragColor = %s + color.a * texture2D(gradientSampler, linear);\n"
+        "    gl_FragColor = dither(color.a * texture2D(gradientSampler, linear));\n"
         "}\n\n",
         "\nvoid main(void) {\n"
-        "    gl_FragColor = %s + color.a * mix(startColor, endColor, clamp(linear, 0.0, 1.0));\n"
+        "    gl_FragColor = dither(color.a * mix(startColor, endColor, clamp(linear, 0.0, 1.0)));\n"
         "}\n\n"
 };
 
@@ -239,11 +267,13 @@
         // Modulate
         "    fragColor = color * texture2D(baseSampler, outTexCoords);\n"
 };
-const char* gFS_Main_FetchA8Texture[2] = {
+const char* gFS_Main_FetchA8Texture[4] = {
         // Don't modulate
         "    fragColor = texture2D(baseSampler, outTexCoords);\n",
+        "    fragColor = texture2D(baseSampler, outTexCoords);\n",
         // Modulate
         "    fragColor = color * texture2D(baseSampler, outTexCoords).a;\n",
+        "    fragColor = color * gamma(texture2D(baseSampler, outTexCoords).a, color.rgb);\n",
 };
 const char* gFS_Main_FetchGradient[6] = {
         // Linear
@@ -271,29 +301,38 @@
         "    fragColor = blendShaders(gradientColor, bitmapColor)";
 const char* gFS_Main_BlendShadersGB =
         "    fragColor = blendShaders(bitmapColor, gradientColor)";
-const char* gFS_Main_BlendShaders_Modulate[3] = {
+const char* gFS_Main_BlendShaders_Modulate[6] = {
         // Don't modulate
         ";\n",
+        ";\n",
         // Modulate
         " * color.a;\n",
+        " * color.a;\n",
         // Modulate with alpha 8 texture
         " * texture2D(baseSampler, outTexCoords).a;\n",
+        " * gamma(texture2D(baseSampler, outTexCoords).a, color.rgb);\n",
 };
-const char* gFS_Main_GradientShader_Modulate[3] = {
+const char* gFS_Main_GradientShader_Modulate[6] = {
         // Don't modulate
         "    fragColor = gradientColor;\n",
+        "    fragColor = gradientColor;\n",
         // Modulate
         "    fragColor = gradientColor * color.a;\n",
+        "    fragColor = gradientColor * color.a;\n",
         // Modulate with alpha 8 texture
         "    fragColor = gradientColor * texture2D(baseSampler, outTexCoords).a;\n",
+        "    fragColor = gradientColor * gamma(texture2D(baseSampler, outTexCoords).a, gradientColor.rgb);\n",
     };
-const char* gFS_Main_BitmapShader_Modulate[3] = {
+const char* gFS_Main_BitmapShader_Modulate[6] = {
         // Don't modulate
         "    fragColor = bitmapColor;\n",
+        "    fragColor = bitmapColor;\n",
         // Modulate
         "    fragColor = bitmapColor * color.a;\n",
+        "    fragColor = bitmapColor * color.a;\n",
         // Modulate with alpha 8 texture
         "    fragColor = bitmapColor * texture2D(baseSampler, outTexCoords).a;\n",
+        "    fragColor = bitmapColor * gamma(texture2D(baseSampler, outTexCoords).a, bitmapColor.rgb);\n",
     };
 const char* gFS_Main_FragColor =
         "    gl_FragColor = fragColor;\n";
@@ -385,7 +424,8 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 ProgramCache::ProgramCache(Extensions& extensions)
-        : mHasES3(extensions.getMajorGlVersion() >= 3) {
+        : mHasES3(extensions.getMajorGlVersion() >= 3)
+        , mHasSRGB(extensions.hasSRGB()) {
 }
 
 ProgramCache::~ProgramCache() {
@@ -518,6 +558,7 @@
 static bool shaderOp(const ProgramDescription& description, String8& shader,
         const int modulateOp, const char** snippets) {
     int op = description.hasAlpha8Texture ? MODULATE_OP_MODULATE_A8 : modulateOp;
+    op = op * 2 + description.hasGammaCorrection;
     shader.append(snippets[op]);
     return description.hasAlpha8Texture;
 }
@@ -570,13 +611,16 @@
         shader.append(gFS_Uniforms_ExternalTextureSampler);
     }
     if (description.hasGradient) {
-        shader.appendFormat(gFS_Uniforms_GradientSampler[description.isSimpleGradient],
-                gFS_Uniforms_Dither);
+        shader.append(gFS_Uniforms_GradientSampler[description.isSimpleGradient]);
     }
     if (description.hasRoundRectClip) {
         shader.append(gFS_Uniforms_HasRoundRectClip);
     }
 
+    if (description.hasGammaCorrection) {
+        shader.appendFormat(gFS_Gamma_Preamble, Properties::textGamma, 1.0f / Properties::textGamma);
+    }
+
     // Optimization for common cases
     if (!description.hasVertexAlpha
             && !blendFramebuffer
@@ -607,18 +651,26 @@
             fast = true;
         } else if (singleA8Texture) {
             if (!description.modulate) {
-                shader.append(gFS_Fast_SingleA8Texture);
+                if (description.hasGammaCorrection) {
+                    shader.append(gFS_Fast_SingleA8Texture_ApplyGamma);
+                } else {
+                    shader.append(gFS_Fast_SingleA8Texture);
+                }
             } else {
-                shader.append(gFS_Fast_SingleModulateA8Texture);
+                if (description.hasGammaCorrection) {
+                    shader.append(gFS_Fast_SingleModulateA8Texture_ApplyGamma);
+                } else {
+                    shader.append(gFS_Fast_SingleModulateA8Texture);
+                }
             }
             fast = true;
         } else if (singleGradient) {
+            shader.append(gFS_Dither_Functions);
+            shader.append(gFS_Dither_Preamble[mHasSRGB]);
             if (!description.modulate) {
-                shader.appendFormat(gFS_Fast_SingleGradient[description.isSimpleGradient],
-                        gFS_Main_Dither[mHasES3]);
+                shader.append(gFS_Fast_SingleGradient[description.isSimpleGradient]);
             } else {
-                shader.appendFormat(gFS_Fast_SingleModulateGradient[description.isSimpleGradient],
-                        gFS_Main_Dither[mHasES3]);
+                shader.append(gFS_Fast_SingleModulateGradient[description.isSimpleGradient]);
             }
             fast = true;
         }
@@ -652,6 +704,10 @@
     if (description.isBitmapNpot) {
         generateTextureWrap(shader, description.bitmapWrapS, description.bitmapWrapT);
     }
+    if (description.hasGradient) {
+        shader.append(gFS_Dither_Functions);
+        shader.append(gFS_Dither_Preamble[mHasSRGB]);
+    }
 
     // Begin the shader
     shader.append(gFS_Main); {
@@ -659,7 +715,8 @@
         if (description.hasTexture || description.hasExternalTexture) {
             if (description.hasAlpha8Texture) {
                 if (!description.hasGradient && !description.hasBitmap) {
-                    shader.append(gFS_Main_FetchA8Texture[modulateOp]);
+                    shader.append(
+                            gFS_Main_FetchA8Texture[modulateOp * 2 + description.hasGammaCorrection]);
                 }
             } else {
                 shader.append(gFS_Main_FetchTexture[modulateOp]);
@@ -671,7 +728,6 @@
         }
         if (description.hasGradient) {
             shader.append(gFS_Main_FetchGradient[gradientIndex(description)]);
-            shader.appendFormat(gFS_Main_AddDitherToGradient, gFS_Main_Dither[mHasES3]);
         }
         if (description.hasBitmap) {
             if (!description.isBitmapNpot) {
@@ -715,6 +771,10 @@
             }
         }
 
+        if (description.hasGradient) {
+            shader.append(gFS_Main_AddDither);
+        }
+
         // Output the fragment
         if (!blendFramebuffer) {
             shader.append(gFS_Main_FragColor);
diff --git a/libs/hwui/ProgramCache.h b/libs/hwui/ProgramCache.h
index 9ac885b..292ecdf 100644
--- a/libs/hwui/ProgramCache.h
+++ b/libs/hwui/ProgramCache.h
@@ -59,6 +59,7 @@
     std::map<programid, std::unique_ptr<Program>> mCache;
 
     const bool mHasES3;
+    const bool mHasSRGB;
 }; // class ProgramCache
 
 }; // namespace uirenderer
diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index eedc9e7..92a49d2 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -203,7 +203,7 @@
 #define PROPERTY_TEXT_LARGE_CACHE_WIDTH "ro.hwui.text_large_cache_width"
 #define PROPERTY_TEXT_LARGE_CACHE_HEIGHT "ro.hwui.text_large_cache_height"
 
-// Gamma (>= 1.0, <= 10.0)
+// Gamma (>= 1.0, <= 3.0)
 #define PROPERTY_TEXT_GAMMA "hwui.text_gamma"
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -222,7 +222,7 @@
 
 #define DEFAULT_TEXTURE_CACHE_FLUSH_RATE 0.6f
 
-#define DEFAULT_TEXT_GAMMA 1.4f
+#define DEFAULT_TEXT_GAMMA 1.45f // Match design tools
 
 // cap to 256 to limite paths in the path cache
 #define DEFAULT_PATH_TEXTURE_CAP 256
diff --git a/libs/hwui/PropertyValuesHolder.cpp b/libs/hwui/PropertyValuesHolder.cpp
index 6ba0ab5..2a03e6a 100644
--- a/libs/hwui/PropertyValuesHolder.cpp
+++ b/libs/hwui/PropertyValuesHolder.cpp
@@ -16,6 +16,7 @@
 
 #include "PropertyValuesHolder.h"
 
+#include "utils/Color.h"
 #include "utils/VectorDrawableUtils.h"
 
 #include <utils/Log.h>
@@ -25,18 +26,26 @@
 
 using namespace VectorDrawable;
 
-inline U8CPU lerp(U8CPU fromValue, U8CPU toValue, float fraction) {
-    return (U8CPU) (fromValue * (1 - fraction) + toValue * fraction);
+inline constexpr float lerp(float fromValue, float toValue, float fraction) {
+    return float (fromValue * (1 - fraction) + toValue * fraction);
+}
+
+inline constexpr float linearize(U8CPU component) {
+    return EOCF_sRGB(component / 255.0f);
 }
 
 // TODO: Add a test for this
 void ColorEvaluator::evaluate(SkColor* outColor,
         const SkColor& fromColor, const SkColor& toColor, float fraction) const {
-    U8CPU alpha = lerp(SkColorGetA(fromColor), SkColorGetA(toColor), fraction);
-    U8CPU red = lerp(SkColorGetR(fromColor), SkColorGetR(toColor), fraction);
-    U8CPU green = lerp(SkColorGetG(fromColor), SkColorGetG(toColor), fraction);
-    U8CPU blue = lerp(SkColorGetB(fromColor), SkColorGetB(toColor), fraction);
-    *outColor = SkColorSetARGB(alpha, red, green, blue);
+    float a = lerp(SkColorGetA(fromColor) / 255.0f, SkColorGetA(toColor) / 255.0f, fraction);
+    float r = lerp(linearize(SkColorGetR(fromColor)), linearize(SkColorGetR(toColor)), fraction);
+    float g = lerp(linearize(SkColorGetG(fromColor)), linearize(SkColorGetG(toColor)), fraction);
+    float b = lerp(linearize(SkColorGetB(fromColor)), linearize(SkColorGetB(toColor)), fraction);
+    *outColor = SkColorSetARGB(
+            (U8CPU) roundf(a * 255.0f),
+            (U8CPU) roundf(OECF_sRGB(r) * 255.0f),
+            (U8CPU) roundf(OECF_sRGB(g) * 255.0f),
+            (U8CPU) roundf(OECF_sRGB(b) * 255.0f));
 }
 
 void PathEvaluator::evaluate(PathData* out,
diff --git a/libs/hwui/Readback.cpp b/libs/hwui/Readback.cpp
index ddca122..22c6dfc 100644
--- a/libs/hwui/Readback.cpp
+++ b/libs/hwui/Readback.cpp
@@ -197,7 +197,7 @@
 
     Texture sourceTexture(caches);
     sourceTexture.wrap(sourceTexId,
-            sourceBuffer->getWidth(), sourceBuffer->getHeight(), 0 /* total lie */);
+            sourceBuffer->getWidth(), sourceBuffer->getHeight(), 0, 0 /* total lie */);
 
     CopyResult copyResult = copyTextureInto(caches, renderThread.renderState(),
             sourceTexture, texTransform, srcRect, bitmap);
diff --git a/libs/hwui/RecordedOp.h b/libs/hwui/RecordedOp.h
index a65c22c..ebc41b1 100644
--- a/libs/hwui/RecordedOp.h
+++ b/libs/hwui/RecordedOp.h
@@ -216,7 +216,6 @@
             : SUPER(BitmapOp)
             , bitmap(bitmap) {}
     const SkBitmap* bitmap;
-    // TODO: asset atlas/texture id lookup?
 };
 
 struct BitmapMeshOp : RecordedOp {
diff --git a/libs/hwui/SkiaShader.cpp b/libs/hwui/SkiaShader.cpp
index 6f4a683..9838df2 100644
--- a/libs/hwui/SkiaShader.cpp
+++ b/libs/hwui/SkiaShader.cpp
@@ -177,11 +177,12 @@
         outData->endColor.set(gradInfo.fColors[1]);
     }
 
-    outData->ditherSampler = (*textureUnit)++;
     return true;
 }
 
-void applyGradient(Caches& caches, const SkiaShaderData::GradientShaderData& data) {
+void applyGradient(Caches& caches, const SkiaShaderData::GradientShaderData& data,
+        const GLsizei width, const GLsizei height) {
+
     if (CC_UNLIKELY(data.gradientTexture)) {
         caches.textureState().activateTexture(data.gradientSampler);
         bindTexture(&caches, data.gradientTexture, data.wrapST, data.wrapST);
@@ -191,10 +192,7 @@
         bindUniformColor(caches.program().getUniform("endColor"), data.endColor);
     }
 
-    // TODO: remove sampler slot incrementing from dither.setupProgram,
-    // since this assignment of slots is done at store, not apply time
-    GLuint ditherSampler = data.ditherSampler;
-    caches.dither.setupProgram(caches.program(), &ditherSampler);
+    glUniform2f(caches.program().getUniform("screenSize"), 1.0f / width, 1.0f / height);
     glUniformMatrix4fv(caches.program().getUniform("screenSpace"), 1,
             GL_FALSE, &data.screenSpace.data[0]);
 }
@@ -208,13 +206,7 @@
         return false;
     }
 
-    /*
-     * Bypass the AssetAtlas, since those textures:
-     * 1) require UV mapping, which isn't implemented in matrix computation below
-     * 2) can't handle REPEAT simply
-     * 3) are safe to upload here (outside of sync stage), since they're static
-     */
-    outData->bitmapTexture = caches.textureCache.getAndBypassAtlas(&bitmap);
+    outData->bitmapTexture = caches.textureCache.get(&bitmap);
     if (!outData->bitmapTexture) return false;
 
     outData->bitmapSampler = (*textureUnit)++;
@@ -388,11 +380,12 @@
     outData->skiaShaderType = kNone_SkiaShaderType;
 }
 
-void SkiaShader::apply(Caches& caches, const SkiaShaderData& data) {
+void SkiaShader::apply(Caches& caches, const SkiaShaderData& data,
+        const GLsizei width, const GLsizei height) {
     if (!data.skiaShaderType) return;
 
     if (data.skiaShaderType & kGradient_SkiaShaderType) {
-        applyGradient(caches, data.gradientData);
+        applyGradient(caches, data.gradientData, width, height);
     }
     if (data.skiaShaderType & kBitmap_SkiaShaderType) {
         applyBitmap(caches, data.bitmapData);
diff --git a/libs/hwui/SkiaShader.h b/libs/hwui/SkiaShader.h
index 884196d..5854289 100644
--- a/libs/hwui/SkiaShader.h
+++ b/libs/hwui/SkiaShader.h
@@ -62,7 +62,6 @@
     } bitmapData;
     struct GradientShaderData {
         Matrix4 screenSpace;
-        GLuint ditherSampler;
 
         // simple gradient
         FloatColor startColor;
@@ -72,7 +71,6 @@
         Texture* gradientTexture;
         GLuint gradientSampler;
         GLenum wrapST;
-
     } gradientData;
     struct LayerShaderData {
         Layer* layer;
@@ -90,7 +88,8 @@
     static void store(Caches& caches, const SkShader& shader, const Matrix4& modelViewMatrix,
             GLuint* textureUnit, ProgramDescription* description,
             SkiaShaderData* outData);
-    static void apply(Caches& caches, const SkiaShaderData& data);
+    static void apply(Caches& caches, const SkiaShaderData& data,
+            const GLsizei width, const GLsizei height);
 };
 
 }; // namespace uirenderer
diff --git a/libs/hwui/Texture.cpp b/libs/hwui/Texture.cpp
index 4f49a35..908f572 100644
--- a/libs/hwui/Texture.cpp
+++ b/libs/hwui/Texture.cpp
@@ -26,19 +26,23 @@
 namespace android {
 namespace uirenderer {
 
+// Number of bytes used by a texture in the given format
 static int bytesPerPixel(GLint glFormat) {
     switch (glFormat) {
     // The wrapped-texture case, usually means a SurfaceTexture
     case 0:
         return 0;
+    case GL_LUMINANCE:
     case GL_ALPHA:
         return 1;
+    case GL_SRGB8:
     case GL_RGB:
         return 3;
+    case GL_SRGB8_ALPHA8:
     case GL_RGBA:
         return 4;
     case GL_RGBA16F:
-        return 16;
+        return 8;
     default:
         LOG_ALWAYS_FATAL("UNKNOWN FORMAT %d", glFormat);
     }
@@ -83,14 +87,16 @@
     mId = 0;
 }
 
-bool Texture::updateSize(uint32_t width, uint32_t height, GLint format) {
-    if (mWidth == width && mHeight == height && mFormat == format) {
+bool Texture::updateSize(uint32_t width, uint32_t height, GLint internalFormat, GLint format) {
+    if (mWidth == width && mHeight == height &&
+            mFormat == format && mInternalFormat == internalFormat) {
         return false;
     }
     mWidth = width;
     mHeight = height;
     mFormat = format;
-    notifySizeChanged(mWidth * mHeight * bytesPerPixel(mFormat));
+    mInternalFormat = internalFormat;
+    notifySizeChanged(mWidth * mHeight * bytesPerPixel(internalFormat));
     return true;
 }
 
@@ -101,10 +107,10 @@
     mMagFilter = GL_LINEAR;
 }
 
-void Texture::upload(GLint internalformat, uint32_t width, uint32_t height,
+void Texture::upload(GLint internalFormat, uint32_t width, uint32_t height,
         GLenum format, GLenum type, const void* pixels) {
     GL_CHECKPOINT(MODERATE);
-    bool needsAlloc = updateSize(width, height, internalformat);
+    bool needsAlloc = updateSize(width, height, internalFormat, format);
     if (!mId) {
         glGenTextures(1, &mId);
         needsAlloc = true;
@@ -112,17 +118,17 @@
     }
     mCaches.textureState().bindTexture(GL_TEXTURE_2D, mId);
     if (needsAlloc) {
-        glTexImage2D(GL_TEXTURE_2D, 0, mFormat, mWidth, mHeight, 0,
+        glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, mWidth, mHeight, 0,
                 format, type, pixels);
     } else if (pixels) {
-        glTexSubImage2D(GL_TEXTURE_2D, 0, mFormat, mWidth, mHeight, 0,
+        glTexSubImage2D(GL_TEXTURE_2D, 0, internalFormat, mWidth, mHeight, 0,
                 format, type, pixels);
     }
     GL_CHECKPOINT(MODERATE);
 }
 
-static void uploadToTexture(bool resize, GLenum format, GLenum type, GLsizei stride, GLsizei bpp,
-        GLsizei width, GLsizei height, const GLvoid * data) {
+static void uploadToTexture(bool resize, GLint internalFormat, GLenum format, GLenum type,
+        GLsizei stride, GLsizei bpp, GLsizei width, GLsizei height, const GLvoid * data) {
 
     const bool useStride = stride != width
             && Caches::getInstance().extensions().hasUnpackRowLength();
@@ -132,7 +138,7 @@
         }
 
         if (resize) {
-            glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, type, data);
+            glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, data);
         } else {
             glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, data);
         }
@@ -156,7 +162,7 @@
         }
 
         if (resize) {
-            glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, type, temp);
+            glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, temp);
         } else {
             glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, temp);
         }
@@ -166,31 +172,44 @@
 }
 
 static void uploadSkBitmapToTexture(const SkBitmap& bitmap,
-        bool resize, GLenum format, GLenum type) {
-    uploadToTexture(resize, format, type, bitmap.rowBytesAsPixels(), bitmap.bytesPerPixel(),
-            bitmap.width(), bitmap.height(), bitmap.getPixels());
+        bool resize, GLint internalFormat, GLenum format, GLenum type) {
+    uploadToTexture(resize, internalFormat, format, type, bitmap.rowBytesAsPixels(),
+            bitmap.bytesPerPixel(), bitmap.width(), bitmap.height(), bitmap.getPixels());
 }
 
-static void colorTypeToGlFormatAndType(SkColorType colorType,
-        GLint* outFormat, GLint* outType) {
+static void colorTypeToGlFormatAndType(const Caches& caches, SkColorType colorType,
+        bool needSRGB, GLint* outInternalFormat, GLint* outFormat, GLint* outType) {
     switch (colorType) {
     case kAlpha_8_SkColorType:
         *outFormat = GL_ALPHA;
+        *outInternalFormat = GL_ALPHA;
         *outType = GL_UNSIGNED_BYTE;
         break;
     case kRGB_565_SkColorType:
-        *outFormat = GL_RGB;
-        *outType = GL_UNSIGNED_SHORT_5_6_5;
+        if (needSRGB) {
+            // We would ideally use a GL_RGB/GL_SRGB8 texture but the
+            // intermediate Skia bitmap needs to be ARGB_8888
+            *outFormat = GL_RGBA;
+            *outInternalFormat = caches.rgbaInternalFormat();
+            *outType = GL_UNSIGNED_BYTE;
+        } else {
+            *outFormat = GL_RGB;
+            *outInternalFormat = GL_RGB;
+            *outType = GL_UNSIGNED_SHORT_5_6_5;
+        }
         break;
     // ARGB_4444 and Index_8 are both upconverted to RGBA_8888
     case kARGB_4444_SkColorType:
     case kIndex_8_SkColorType:
     case kN32_SkColorType:
         *outFormat = GL_RGBA;
+        *outInternalFormat = caches.rgbaInternalFormat(needSRGB);
         *outType = GL_UNSIGNED_BYTE;
         break;
     case kGray_8_SkColorType:
+        // TODO: Handle sRGB
         *outFormat = GL_LUMINANCE;
+        *outInternalFormat = GL_LUMINANCE;
         *outType = GL_UNSIGNED_BYTE;
         break;
     default:
@@ -224,29 +243,36 @@
         setDefaultParams = true;
     }
 
-    GLint format, type;
-    colorTypeToGlFormatAndType(bitmap.colorType(), &format, &type);
+    sk_sp<SkColorSpace> sRGB = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+    bool needSRGB = bitmap.colorSpace() == sRGB.get();
 
-    if (updateSize(bitmap.width(), bitmap.height(), format)) {
+    GLint internalFormat, format, type;
+    colorTypeToGlFormatAndType(mCaches, bitmap.colorType(), needSRGB, &internalFormat, &format, &type);
+
+    if (updateSize(bitmap.width(), bitmap.height(), internalFormat, format)) {
         needsAlloc = true;
     }
 
     blend = !bitmap.isOpaque();
     mCaches.textureState().bindTexture(mId);
 
+    // TODO: Handle sRGB gray bitmaps
+    bool hasSRGB = mCaches.extensions().hasSRGB();
     if (CC_UNLIKELY(bitmap.colorType() == kARGB_4444_SkColorType
-            || bitmap.colorType() == kIndex_8_SkColorType)) {
+            || bitmap.colorType() == kIndex_8_SkColorType
+            || (bitmap.colorType() == kRGB_565_SkColorType && hasSRGB && needSRGB))) {
+
         SkBitmap rgbaBitmap;
-        rgbaBitmap.allocPixels(SkImageInfo::MakeN32(mWidth, mHeight,
-                bitmap.alphaType()));
+        rgbaBitmap.allocPixels(SkImageInfo::MakeN32(
+                mWidth, mHeight, bitmap.alphaType(), hasSRGB ? sRGB : nullptr));
         rgbaBitmap.eraseColor(0);
 
         SkCanvas canvas(rgbaBitmap);
         canvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
 
-        uploadSkBitmapToTexture(rgbaBitmap, needsAlloc, format, type);
+        uploadSkBitmapToTexture(rgbaBitmap, needsAlloc, internalFormat, format, type);
     } else {
-        uploadSkBitmapToTexture(bitmap, needsAlloc, format, type);
+        uploadSkBitmapToTexture(bitmap, needsAlloc, internalFormat, format, type);
     }
 
     if (canMipMap) {
@@ -262,11 +288,12 @@
     }
 }
 
-void Texture::wrap(GLuint id, uint32_t width, uint32_t height, GLint format) {
+void Texture::wrap(GLuint id, uint32_t width, uint32_t height, GLint internalFormat, GLint format) {
     mId = id;
     mWidth = width;
     mHeight = height;
     mFormat = format;
+    mInternalFormat = internalFormat;
     // We're wrapping an existing texture, so don't double count this memory
     notifySizeChanged(0);
 }
diff --git a/libs/hwui/Texture.h b/libs/hwui/Texture.h
index b72742f..aa8a6d3 100644
--- a/libs/hwui/Texture.h
+++ b/libs/hwui/Texture.h
@@ -69,8 +69,8 @@
      *
      * The image data is undefined after calling this.
      */
-    void resize(uint32_t width, uint32_t height, GLint format) {
-        upload(format, width, height, format, GL_UNSIGNED_BYTE, nullptr);
+    void resize(uint32_t width, uint32_t height, GLint internalFormat, GLint format) {
+        upload(internalFormat, width, height, format, GL_UNSIGNED_BYTE, nullptr);
     }
 
     /**
@@ -85,13 +85,13 @@
     /**
      * Basically glTexImage2D/glTexSubImage2D.
      */
-    void upload(GLint internalformat, uint32_t width, uint32_t height,
+    void upload(GLint internalFormat, uint32_t width, uint32_t height,
             GLenum format, GLenum type, const void* pixels);
 
     /**
      * Wraps an existing texture.
      */
-    void wrap(GLuint id, uint32_t width, uint32_t height, GLint format);
+    void wrap(GLuint id, uint32_t width, uint32_t height, GLint internalFormat, GLint format);
 
     GLuint id() const {
         return mId;
@@ -109,6 +109,10 @@
         return mFormat;
     }
 
+    GLint internalFormat() const {
+        return mInternalFormat;
+    }
+
     /**
      * Generation of the backing bitmap,
      */
@@ -148,13 +152,14 @@
     friend class Layer;
 
     // Returns true if the size changed, false if it was the same
-    bool updateSize(uint32_t width, uint32_t height, GLint format);
+    bool updateSize(uint32_t width, uint32_t height, GLint internalFormat, GLint format);
     void resetCachedParams();
 
     GLuint mId = 0;
     uint32_t mWidth = 0;
     uint32_t mHeight = 0;
     GLint mFormat = 0;
+    GLint mInternalFormat = 0;
 
     /* See GLES spec section 3.8.14
      * "In the initial state, the value assigned to TEXTURE_MIN_FILTER is
diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
index 523924a..5ccdbda 100644
--- a/libs/hwui/TextureCache.cpp
+++ b/libs/hwui/TextureCache.cpp
@@ -18,7 +18,6 @@
 
 #include <utils/Mutex.h>
 
-#include "AssetAtlas.h"
 #include "Caches.h"
 #include "Texture.h"
 #include "TextureCache.h"
@@ -36,8 +35,7 @@
         : mCache(LruCache<uint32_t, Texture*>::kUnlimitedCapacity)
         , mSize(0)
         , mMaxSize(Properties::textureCacheSize)
-        , mFlushRate(Properties::textureCacheFlushRate)
-        , mAssetAtlas(nullptr) {
+        , mFlushRate(Properties::textureCacheFlushRate) {
     mCache.setOnEntryRemovedListener(this);
 
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
@@ -84,10 +82,6 @@
 // Caching
 ///////////////////////////////////////////////////////////////////////////////
 
-void TextureCache::setAssetAtlas(AssetAtlas* assetAtlas) {
-    mAssetAtlas = assetAtlas;
-}
-
 void TextureCache::resetMarkInUse(void* ownerToken) {
     LruCache<uint32_t, Texture*>::Iterator iter(mCache);
     while (iter.next()) {
@@ -108,14 +102,7 @@
 
 // Returns a prepared Texture* that either is already in the cache or can fit
 // in the cache (and is thus added to the cache)
-Texture* TextureCache::getCachedTexture(const SkBitmap* bitmap, AtlasUsageType atlasUsageType) {
-    if (CC_LIKELY(mAssetAtlas != nullptr) && atlasUsageType == AtlasUsageType::Use) {
-        AssetAtlas::Entry* entry = mAssetAtlas->getEntry(bitmap->pixelRef());
-        if (CC_UNLIKELY(entry)) {
-            return entry->texture;
-        }
-    }
-
+Texture* TextureCache::getCachedTexture(const SkBitmap* bitmap) {
     Texture* texture = mCache.get(bitmap->pixelRef()->getStableID());
 
     if (!texture) {
@@ -160,7 +147,7 @@
 }
 
 bool TextureCache::prefetchAndMarkInUse(void* ownerToken, const SkBitmap* bitmap) {
-    Texture* texture = getCachedTexture(bitmap, AtlasUsageType::Use);
+    Texture* texture = getCachedTexture(bitmap);
     if (texture) {
         texture->isInUse = ownerToken;
     }
@@ -168,11 +155,11 @@
 }
 
 bool TextureCache::prefetch(const SkBitmap* bitmap) {
-    return getCachedTexture(bitmap, AtlasUsageType::Use);
+    return getCachedTexture(bitmap);
 }
 
-Texture* TextureCache::get(const SkBitmap* bitmap, AtlasUsageType atlasUsageType) {
-    Texture* texture = getCachedTexture(bitmap, atlasUsageType);
+Texture* TextureCache::get(const SkBitmap* bitmap) {
+    Texture* texture = getCachedTexture(bitmap);
 
     if (!texture) {
         if (!canMakeTextureFromBitmap(bitmap)) {
diff --git a/libs/hwui/TextureCache.h b/libs/hwui/TextureCache.h
index 0a61b6b..88ef771 100644
--- a/libs/hwui/TextureCache.h
+++ b/libs/hwui/TextureCache.h
@@ -47,8 +47,6 @@
 // Classes
 ///////////////////////////////////////////////////////////////////////////////
 
-class AssetAtlas;
-
 /**
  * A simple LRU texture cache. The cache has a maximum size expressed in bytes.
  * Any texture added to the cache causing the cache to grow beyond the maximum
@@ -85,20 +83,10 @@
     bool prefetch(const SkBitmap* bitmap);
 
     /**
-     * Returns the texture associated with the specified bitmap from either within the cache, or
-     * the AssetAtlas. If the texture cannot be found in the cache, a new texture is generated.
+     * Returns the texture associated with the specified bitmap from within the cache.
+     * If the texture cannot be found in the cache, a new texture is generated.
      */
-    Texture* get(const SkBitmap* bitmap) {
-        return get(bitmap, AtlasUsageType::Use);
-    }
-
-    /**
-     * Returns the texture associated with the specified bitmap. If the texture cannot be found in
-     * the cache, a new texture is generated, even if it resides in the AssetAtlas.
-     */
-    Texture* getAndBypassAtlas(const SkBitmap* bitmap) {
-        return get(bitmap, AtlasUsageType::Bypass);
-    }
+    Texture* get(const SkBitmap* bitmap);
 
     /**
      * Removes the texture associated with the specified pixelRef. This is meant
@@ -130,18 +118,10 @@
      */
     void flush();
 
-    void setAssetAtlas(AssetAtlas* assetAtlas);
-
 private:
-    enum class AtlasUsageType {
-        Use,
-        Bypass,
-    };
-
     bool canMakeTextureFromBitmap(const SkBitmap* bitmap);
 
-    Texture* get(const SkBitmap* bitmap, AtlasUsageType atlasUsageType);
-    Texture* getCachedTexture(const SkBitmap* bitmap, AtlasUsageType atlasUsageType);
+    Texture* getCachedTexture(const SkBitmap* bitmap);
 
     LruCache<uint32_t, Texture*> mCache;
 
@@ -155,8 +135,6 @@
 
     std::vector<uint32_t> mGarbage;
     mutable Mutex mLock;
-
-    AssetAtlas* mAssetAtlas;
 }; // class TextureCache
 
 }; // namespace uirenderer
diff --git a/libs/hwui/VectorDrawable.cpp b/libs/hwui/VectorDrawable.cpp
index 2b79941..4e5b9ad 100644
--- a/libs/hwui/VectorDrawable.cpp
+++ b/libs/hwui/VectorDrawable.cpp
@@ -561,8 +561,12 @@
 
 bool Tree::allocateBitmapIfNeeded(SkBitmap* outCache, int width, int height) {
     if (!canReuseBitmap(*outCache, width, height)) {
-        SkImageInfo info = SkImageInfo::Make(width, height,
-                kN32_SkColorType, kPremul_SkAlphaType);
+#ifndef ANDROID_ENABLE_LINEAR_BLENDING
+        sk_sp<SkColorSpace> colorSpace = nullptr;
+#else
+        sk_sp<SkColorSpace> colorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+#endif
+        SkImageInfo info = SkImageInfo::MakeN32(width, height, kPremul_SkAlphaType, colorSpace);
         outCache->setInfo(info);
         // TODO: Count the bitmap cache against app's java heap
         outCache->allocPixels(info);
diff --git a/libs/hwui/Vertex.h b/libs/hwui/Vertex.h
index c1bf980..db982ad 100644
--- a/libs/hwui/Vertex.h
+++ b/libs/hwui/Vertex.h
@@ -19,6 +19,7 @@
 
 #include "Vector.h"
 
+#include "FloatColor.h"
 #include "utils/Macros.h"
 
 namespace android {
@@ -76,21 +77,19 @@
 REQUIRE_COMPATIBLE_LAYOUT(TextureVertex);
 
 /**
- * Simple structure to describe a vertex with a position, texture UV and ARGB color.
+ * Simple structure to describe a vertex with a position, texture UV and an
+ * sRGB color with alpha. The color is stored pre-multiplied in linear space.
  */
 struct ColorTextureVertex {
     float x, y;
     float u, v;
-    float r, g, b, a;
+    float r, g, b, a; // pre-multiplied linear
 
     static inline void set(ColorTextureVertex* vertex, float x, float y,
-            float u, float v, int color) {
-
-        float a =     ((color >> 24) & 0xff) / 255.0f;
-        float r = a * ((color >> 16) & 0xff) / 255.0f;
-        float g = a * ((color >>  8) & 0xff) / 255.0f;
-        float b = a * ((color) & 0xff) / 255.0f;
-        *vertex = { x, y, u, v, r, g, b, a };
+            float u, float v, uint32_t color) {
+        FloatColor c;
+        c.set(color);
+        *vertex = { x, y, u, v, c.r, c.g, c.b, c.a };
     }
 }; // struct ColorTextureVertex
 
diff --git a/libs/hwui/font/CacheTexture.cpp b/libs/hwui/font/CacheTexture.cpp
index 49e9f65..e2844ad06 100644
--- a/libs/hwui/font/CacheTexture.cpp
+++ b/libs/hwui/font/CacheTexture.cpp
@@ -180,7 +180,12 @@
         mPixelBuffer = PixelBuffer::create(mFormat, getWidth(), getHeight());
     }
 
-    mTexture.resize(mWidth, mHeight, mFormat);
+    GLint internalFormat = mFormat;
+    if (mFormat == GL_RGBA) {
+        internalFormat = mCaches.rgbaInternalFormat();
+    }
+
+    mTexture.resize(mWidth, mHeight, internalFormat, mFormat);
     mTexture.setFilter(getLinearFiltering() ? GL_LINEAR : GL_NEAREST);
     mTexture.setWrap(GL_CLAMP_TO_EDGE);
 }
diff --git a/libs/hwui/renderstate/OffscreenBufferPool.cpp b/libs/hwui/renderstate/OffscreenBufferPool.cpp
index 10a26e0..a9bbb27 100644
--- a/libs/hwui/renderstate/OffscreenBufferPool.cpp
+++ b/libs/hwui/renderstate/OffscreenBufferPool.cpp
@@ -22,6 +22,7 @@
 #include "utils/FatVector.h"
 #include "utils/TraceUtils.h"
 
+#include <utils/Color.h>
 #include <utils/Log.h>
 
 #include <GLES2/gl2.h>
@@ -44,7 +45,7 @@
     uint32_t height = computeIdealDimension(viewportHeight);
     ATRACE_FORMAT("Allocate %ux%u HW Layer", width, height);
     caches.textureState().activateTexture(0);
-    texture.resize(width, height, GL_RGBA);
+    texture.resize(width, height, caches.rgbaInternalFormat(), GL_RGBA);
     texture.blend = true;
     texture.setWrap(GL_CLAMP_TO_EDGE);
     // not setting filter on texture, since it's set when drawing, based on transform
diff --git a/libs/hwui/renderstate/RenderState.cpp b/libs/hwui/renderstate/RenderState.cpp
index ee4619d..84ab3f3 100644
--- a/libs/hwui/renderstate/RenderState.cpp
+++ b/libs/hwui/renderstate/RenderState.cpp
@@ -52,7 +52,6 @@
         mCaches = &Caches::createInstance(*this);
     }
     mCaches->init();
-    mCaches->textureCache.setAssetAtlas(&mAssetAtlas);
 }
 
 static void layerLostGlContext(Layer* layer) {
@@ -64,7 +63,6 @@
 
     // TODO: reset all cached state in state objects
     std::for_each(mActiveLayers.begin(), mActiveLayers.end(), layerLostGlContext);
-    mAssetAtlas.terminate();
 
     mCaches->terminate();
 
@@ -147,9 +145,17 @@
     meshState().resetVertexPointers();
     meshState().disableTexCoordsVertexArray();
     debugOverdraw(false, false);
+    // TODO: We need a way to know whether the functor is sRGB aware (b/32072673)
+    if (mCaches->extensions().hasSRGBWriteControl()) {
+        glDisable(GL_FRAMEBUFFER_SRGB_EXT);
+    }
 }
 
 void RenderState::resumeFromFunctorInvoke() {
+    if (mCaches->extensions().hasSRGBWriteControl()) {
+        glEnable(GL_FRAMEBUFFER_SRGB_EXT);
+    }
+
     glViewport(0, 0, mViewportWidth, mViewportHeight);
     glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
     debugOverdraw(false, false);
@@ -308,7 +314,7 @@
         glVertexAttribPointer(alphaLocation, 1, GL_FLOAT, GL_FALSE, vertices.stride, alphaCoords);
     }
     // Shader uniforms
-    SkiaShader::apply(*mCaches, fill.skiaShaderData);
+    SkiaShader::apply(*mCaches, fill.skiaShaderData, mViewportWidth, mViewportHeight);
 
     GL_CHECKPOINT(MODERATE);
     Texture* texture = (fill.skiaShaderData.skiaShaderType & kBitmap_SkiaShaderType) ?
diff --git a/libs/hwui/renderstate/RenderState.h b/libs/hwui/renderstate/RenderState.h
index 9e0fb12..3d119dc 100644
--- a/libs/hwui/renderstate/RenderState.h
+++ b/libs/hwui/renderstate/RenderState.h
@@ -16,7 +16,6 @@
 #ifndef RENDERSTATE_H
 #define RENDERSTATE_H
 
-#include "AssetAtlas.h"
 #include "Caches.h"
 #include "Glop.h"
 #include "renderstate/Blend.h"
@@ -92,7 +91,6 @@
 
     void render(const Glop& glop, const Matrix4& orthoMatrix);
 
-    AssetAtlas& assetAtlas() { return mAssetAtlas; }
     Blend& blend() { return *mBlend; }
     MeshState& meshState() { return *mMeshState; }
     Scissor& scissor() { return *mScissor; }
@@ -120,7 +118,6 @@
 
     OffscreenBufferPool mLayerPool;
 
-    AssetAtlas mAssetAtlas;
     std::set<Layer*> mActiveLayers;
     std::set<renderthread::CanvasContext*> mRegisteredContexts;
 
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 0f2d55b..fe0f56a 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -545,11 +545,6 @@
     return mRenderPipeline->createTextureLayer();
 }
 
-void CanvasContext::setTextureAtlas(RenderThread& thread,
-        const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize) {
-    thread.eglManager().setTextureAtlas(buffer, map, mapSize);
-}
-
 void CanvasContext::dumpFrames(int fd) {
     FILE* file = fdopen(fd, "a");
     fprintf(file, "\n\n---PROFILEDATA---\n");
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 652cddd..41b658e 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -119,9 +119,6 @@
 
     DeferredLayerUpdater* createTextureLayer();
 
-    ANDROID_API static void setTextureAtlas(RenderThread& thread,
-            const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize);
-
     void stopDrawing();
     void notifyFramePending();
 
diff --git a/libs/hwui/renderthread/EglManager.cpp b/libs/hwui/renderthread/EglManager.cpp
index 86731c9..beda045 100644
--- a/libs/hwui/renderthread/EglManager.cpp
+++ b/libs/hwui/renderthread/EglManager.cpp
@@ -91,9 +91,7 @@
         , mEglConfig(nullptr)
         , mEglContext(EGL_NO_CONTEXT)
         , mPBufferSurface(EGL_NO_SURFACE)
-        , mCurrentSurface(EGL_NO_SURFACE)
-        , mAtlasMap(nullptr)
-        , mAtlasMapSize(0) {
+        , mCurrentSurface(EGL_NO_SURFACE) {
 }
 
 void EglManager::initialize() {
@@ -128,7 +126,6 @@
     makeCurrent(mPBufferSurface);
     DeviceInfo::initialize();
     mRenderThread.renderState().onGLContextCreated();
-    initAtlas();
 }
 
 void EglManager::initExtensions() {
@@ -191,32 +188,6 @@
         "Failed to create context, error = %s", egl_error_str());
 }
 
-void EglManager::setTextureAtlas(const sp<GraphicBuffer>& buffer,
-        int64_t* map, size_t mapSize) {
-
-    // Already initialized
-    if (mAtlasBuffer.get()) {
-        ALOGW("Multiple calls to setTextureAtlas!");
-        delete map;
-        return;
-    }
-
-    mAtlasBuffer = buffer;
-    mAtlasMap = map;
-    mAtlasMapSize = mapSize;
-
-    if (hasEglContext()) {
-        initAtlas();
-    }
-}
-
-void EglManager::initAtlas() {
-    if (mAtlasBuffer.get()) {
-        mRenderThread.renderState().assetAtlas().init(mAtlasBuffer,
-                mAtlasMap, mAtlasMapSize);
-    }
-}
-
 void EglManager::createPBufferSurface() {
     LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY,
             "usePBufferSurface() called on uninitialized GlobalContext!");
@@ -229,7 +200,16 @@
 
 EGLSurface EglManager::createSurface(EGLNativeWindowType window) {
     initialize();
-    EGLSurface surface = eglCreateWindowSurface(mEglDisplay, mEglConfig, window, nullptr);
+
+    EGLint attribs[] = {
+#ifdef ANDROID_ENABLE_LINEAR_BLENDING
+            EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR,
+            EGL_COLORSPACE, EGL_COLORSPACE_sRGB,
+#endif
+            EGL_NONE
+    };
+
+    EGLSurface surface = eglCreateWindowSurface(mEglDisplay, mEglConfig, window, attribs);
     LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
             "Failed to create EGLSurface for window %p, eglErr = %s",
             (void*) window, egl_error_str());
diff --git a/libs/hwui/renderthread/EglManager.h b/libs/hwui/renderthread/EglManager.h
index 41047fe..ba4a3e1 100644
--- a/libs/hwui/renderthread/EglManager.h
+++ b/libs/hwui/renderthread/EglManager.h
@@ -79,8 +79,6 @@
     // Returns true iff the surface is now preserving buffers.
     bool setPreserveBuffer(EGLSurface surface, bool preserve);
 
-    void setTextureAtlas(const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize);
-
     void fence();
 
 private:
@@ -94,7 +92,6 @@
     void createPBufferSurface();
     void loadConfig();
     void createContext();
-    void initAtlas();
     EGLint queryBufferAge(EGLSurface surface);
 
     RenderThread& mRenderThread;
@@ -106,10 +103,6 @@
 
     EGLSurface mCurrentSurface;
 
-    sp<GraphicBuffer> mAtlasBuffer;
-    int64_t* mAtlasMap;
-    size_t mAtlasMapSize;
-
     enum class SwapBehavior {
         Discard,
         Preserved,
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index dcbc980..c2ed864 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -480,23 +480,6 @@
     staticPostAndWait(task);
 }
 
-CREATE_BRIDGE4(setTextureAtlas, RenderThread* thread, GraphicBuffer* buffer, int64_t* map,
-               size_t size) {
-    CanvasContext::setTextureAtlas(*args->thread, args->buffer, args->map, args->size);
-    args->buffer->decStrong(nullptr);
-    return nullptr;
-}
-
-void RenderProxy::setTextureAtlas(const sp<GraphicBuffer>& buffer, int64_t* map, size_t size) {
-    SETUP_TASK(setTextureAtlas);
-    args->thread = &mRenderThread;
-    args->buffer = buffer.get();
-    args->buffer->incStrong(nullptr);
-    args->map = map;
-    args->size = size;
-    post(task);
-}
-
 CREATE_BRIDGE2(setProcessStatsBuffer, RenderThread* thread, int fd) {
     args->thread->jankTracker().switchStorageToAshmem(args->fd);
     close(args->fd);
diff --git a/libs/hwui/renderthread/RenderProxy.h b/libs/hwui/renderthread/RenderProxy.h
index d4aaea6..50a6f64 100644
--- a/libs/hwui/renderthread/RenderProxy.h
+++ b/libs/hwui/renderthread/RenderProxy.h
@@ -112,7 +112,6 @@
     uint32_t frameTimePercentile(int p);
     ANDROID_API static void dumpGraphicsMemory(int fd);
 
-    ANDROID_API void setTextureAtlas(const sp<GraphicBuffer>& buffer, int64_t* map, size_t size);
     ANDROID_API void setProcessStatsBuffer(int fd);
     ANDROID_API int getRenderThreadTid();
 
diff --git a/libs/hwui/tests/common/TestUtils.h b/libs/hwui/tests/common/TestUtils.h
index 78e9bc4..51c0a05 100644
--- a/libs/hwui/tests/common/TestUtils.h
+++ b/libs/hwui/tests/common/TestUtils.h
@@ -124,8 +124,9 @@
     static SkBitmap createSkBitmap(int width, int height,
             SkColorType colorType = kN32_SkColorType) {
         SkBitmap bitmap;
+        sk_sp<SkColorSpace> colorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
         SkImageInfo info = SkImageInfo::Make(width, height,
-                colorType, kPremul_SkAlphaType);
+                colorType, kPremul_SkAlphaType, colorSpace);
         bitmap.setInfo(info);
         bitmap.allocPixels(info);
         return bitmap;
diff --git a/libs/hwui/tests/unit/SkiaBehaviorTests.cpp b/libs/hwui/tests/unit/SkiaBehaviorTests.cpp
index a30ada0..5cab04d 100644
--- a/libs/hwui/tests/unit/SkiaBehaviorTests.cpp
+++ b/libs/hwui/tests/unit/SkiaBehaviorTests.cpp
@@ -18,6 +18,7 @@
 
 #include <gtest/gtest.h>
 #include <SkColorMatrixFilter.h>
+#include <SkColorSpace.h>
 #include <SkImagePriv.h>
 #include <SkShader.h>
 
@@ -82,3 +83,9 @@
     paint.setXfermodeMode(SkXfermode::kOverlay_Mode);
     ASSERT_EQ(expected, paint.getXfermode());
 }
+
+TEST(SkiaBehavior, srgbColorSpaceIsSingleton) {
+    sk_sp<SkColorSpace> sRGB1 = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+    sk_sp<SkColorSpace> sRGB2 = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+    ASSERT_EQ(sRGB1.get(), sRGB2.get());
+}
diff --git a/libs/hwui/utils/Color.h b/libs/hwui/utils/Color.h
index b5157f4..c8f8c70 100644
--- a/libs/hwui/utils/Color.h
+++ b/libs/hwui/utils/Color.h
@@ -16,6 +16,8 @@
 #ifndef COLOR_H
 #define COLOR_H
 
+#include <math.h>
+
 #include <SkColor.h>
 
 namespace android {
@@ -80,6 +82,28 @@
     };
     static constexpr int BrightColorsCount = sizeof(BrightColors) / sizeof(Color::Color);
 
+    // Opto-electronic conversion function for the sRGB color space
+    // Takes a gamma-encoded sRGB value and converts it to a linear sRGB value
+    static constexpr float OECF_sRGB(float linear) {
+#ifdef ANDROID_ENABLE_LINEAR_BLENDING
+        // IEC 61966-2-1:1999
+        return linear <= 0.0031308f ?
+                linear * 12.92f : (powf(linear, 1.0f / 2.4f) * 1.055f) - 0.055f;
+#else
+        return linear;
+#endif
+    }
+
+    // Electro-optical conversion function for the sRGB color space
+    // Takes a linear sRGB value and converts it to a gamma-encoded sRGB value
+    static constexpr float EOCF_sRGB(float srgb) {
+#ifdef ANDROID_ENABLE_LINEAR_BLENDING
+        // IEC 61966-2-1:1999
+        return srgb <= 0.04045f ? srgb / 12.92f : powf((srgb + 0.055f) / 1.055f, 2.4f);
+#else
+        return srgb;
+#endif
+    }
 } /* namespace uirenderer */
 } /* namespace android */
 
diff --git a/libs/hwui/utils/TestWindowContext.cpp b/libs/hwui/utils/TestWindowContext.cpp
index b879f78..624d207 100644
--- a/libs/hwui/utils/TestWindowContext.cpp
+++ b/libs/hwui/utils/TestWindowContext.cpp
@@ -110,9 +110,10 @@
     }
 
     bool capturePixels(SkBitmap* bmp) {
+        sk_sp<SkColorSpace> colorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
         SkImageInfo destinationConfig =
             SkImageInfo::Make(mSize.width(), mSize.height(),
-                              kRGBA_8888_SkColorType, kPremul_SkAlphaType);
+                              kRGBA_8888_SkColorType, kPremul_SkAlphaType, colorSpace);
         bmp->allocPixels(destinationConfig);
         android_memset32((uint32_t*) bmp->getPixels(), SK_ColorRED,
                          mSize.width() * mSize.height() * 4);
diff --git a/preloaded-classes b/preloaded-classes
index 42f290e..5ddd08b 100644
--- a/preloaded-classes
+++ b/preloaded-classes
@@ -2077,9 +2077,6 @@
 android.view.HandlerActionQueue
 android.view.HandlerActionQueue$HandlerAction
 android.view.HardwareLayer
-android.view.IAssetAtlas
-android.view.IAssetAtlas$Stub
-android.view.IAssetAtlas$Stub$Proxy
 android.view.IGraphicsStats
 android.view.IGraphicsStats$Stub
 android.view.IGraphicsStats$Stub$Proxy
diff --git a/services/core/java/com/android/server/AssetAtlasService.java b/services/core/java/com/android/server/AssetAtlasService.java
deleted file mode 100644
index b0f6048..0000000
--- a/services/core/java/com/android/server/AssetAtlasService.java
+++ /dev/null
@@ -1,717 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server;
-
-import android.content.Context;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.content.res.Resources;
-import android.graphics.Atlas;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Paint;
-import android.graphics.PixelFormat;
-import android.graphics.PorterDuff;
-import android.graphics.PorterDuffXfermode;
-import android.graphics.drawable.Drawable;
-import android.os.Environment;
-import android.os.RemoteException;
-import android.os.SystemProperties;
-import android.util.Log;
-import android.util.LongSparseArray;
-import android.view.GraphicBuffer;
-import android.view.IAssetAtlas;
-
-import java.io.BufferedReader;
-import java.io.BufferedWriter;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.io.OutputStreamWriter;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashSet;
-import java.util.List;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicBoolean;
-
-/**
- * This service is responsible for packing preloaded bitmaps into a single
- * atlas texture. The resulting texture can be shared across processes to
- * reduce overall memory usage.
- *
- * @hide
- */
-public class AssetAtlasService extends IAssetAtlas.Stub {
-    /**
-     * Name of the <code>AssetAtlasService</code>.
-     */
-    public static final String ASSET_ATLAS_SERVICE = "assetatlas";
-
-    private static final String LOG_TAG = "AssetAtlas";
-
-    // Turns debug logs on/off. Debug logs are kept to a minimum and should
-    // remain on to diagnose issues
-    private static final boolean DEBUG_ATLAS = true;
-
-    // When set to true the content of the atlas will be saved to disk
-    // in /data/system/atlas.png. The shared GraphicBuffer may be empty
-    private static final boolean DEBUG_ATLAS_TEXTURE = false;
-
-    // Minimum size in pixels to consider for the resulting texture
-    private static final int MIN_SIZE = 512;
-    // Maximum size in pixels to consider for the resulting texture
-    private static final int MAX_SIZE = 2048;
-    // Increment in number of pixels between size variants when looking
-    // for the best texture dimensions
-    private static final int STEP = 64;
-
-    // This percentage of the total number of pixels represents the minimum
-    // number of pixels we want to be able to pack in the atlas
-    private static final float PACKING_THRESHOLD = 0.8f;
-
-    // Defines the number of int fields used to represent a single entry
-    // in the atlas map. This number defines the size of the array returned
-    // by the getMap(). See the mAtlasMap field for more information
-    private static final int ATLAS_MAP_ENTRY_FIELD_COUNT = 3;
-
-    // Specifies how our GraphicBuffer will be used. To get proper swizzling
-    // the buffer will be written to using OpenGL (from JNI) so we can leave
-    // the software flag set to "never"
-    private static final int GRAPHIC_BUFFER_USAGE = GraphicBuffer.USAGE_SW_READ_NEVER |
-            GraphicBuffer.USAGE_SW_WRITE_NEVER | GraphicBuffer.USAGE_HW_TEXTURE;
-
-    // This boolean is set to true if an atlas was successfully
-    // computed and rendered
-    private final AtomicBoolean mAtlasReady = new AtomicBoolean(false);
-
-    private final Context mContext;
-
-    // Version name of the current build, used to identify changes to assets list
-    private final String mVersionName;
-
-    // Holds the atlas' data. This buffer can be mapped to
-    // OpenGL using an EGLImage
-    private GraphicBuffer mBuffer;
-
-    // Describes how bitmaps are placed in the atlas. Each bitmap is
-    // represented by several entries in the array:
-    // long0: SkBitmap*, the native bitmap object
-    // long1: x position
-    // long2: y position
-    private long[] mAtlasMap;
-
-    /**
-     * Creates a new service. Upon creating, the service will gather the list of
-     * assets to consider for packing into the atlas and spawn a new thread to
-     * start the packing work.
-     *
-     * @param context The context giving access to preloaded resources
-     */
-    public AssetAtlasService(Context context) {
-        mContext = context;
-        mVersionName = queryVersionName(context);
-
-        Collection<Bitmap> bitmaps = new HashSet<Bitmap>(300);
-        int totalPixelCount = 0;
-
-        // We only care about drawables that hold bitmaps
-        final Resources resources = context.getResources();
-        final LongSparseArray<Drawable.ConstantState> drawables = resources.getPreloadedDrawables();
-
-        final int count = drawables.size();
-        for (int i = 0; i < count; i++) {
-            try {
-                totalPixelCount += drawables.valueAt(i).addAtlasableBitmaps(bitmaps);
-            } catch (Throwable t) {
-                Log.e("AssetAtlas", "Failed to fetch preloaded drawable state", t);
-                throw t;
-            }
-        }
-
-        ArrayList<Bitmap> sortedBitmaps = new ArrayList<Bitmap>(bitmaps);
-        // Our algorithms perform better when the bitmaps are first sorted
-        // The comparator will sort the bitmap by width first, then by height
-        Collections.sort(sortedBitmaps, new Comparator<Bitmap>() {
-            @Override
-            public int compare(Bitmap b1, Bitmap b2) {
-                if (b1.getWidth() == b2.getWidth()) {
-                    return b2.getHeight() - b1.getHeight();
-                }
-                return b2.getWidth() - b1.getWidth();
-            }
-        });
-
-        // Kick off the packing work on a worker thread
-        new Thread(new Renderer(sortedBitmaps, totalPixelCount)).start();
-    }
-
-    /**
-     * Queries the version name stored in framework's AndroidManifest.
-     * The version name can be used to identify possible changes to
-     * framework resources.
-     *
-     * @see #getBuildIdentifier(String)
-     */
-    private static String queryVersionName(Context context) {
-        try {
-            String packageName = context.getPackageName();
-            PackageInfo info = context.getPackageManager().getPackageInfo(packageName,
-                    PackageManager.MATCH_DEBUG_TRIAGED_MISSING);
-            return info.versionName;
-        } catch (PackageManager.NameNotFoundException e) {
-            Log.w(LOG_TAG, "Could not get package info", e);
-        }
-        return null;
-    }
-
-    /**
-     * Callback invoked by the server thread to indicate we can now run
-     * 3rd party code.
-     */
-    public void systemRunning() {
-    }
-
-    /**
-     * The renderer does all the work:
-     */
-    private class Renderer implements Runnable {
-        private final ArrayList<Bitmap> mBitmaps;
-        private final int mPixelCount;
-
-        Renderer(ArrayList<Bitmap> bitmaps, int pixelCount) {
-            mBitmaps = bitmaps;
-            mPixelCount = pixelCount;
-        }
-
-        /**
-         * 1. On first boot or after every update, brute-force through all the
-         *    possible atlas configurations and look for the best one (maximimize
-         *    number of packed assets and minimize texture size)
-         *    a. If a best configuration was computed, write it out to disk for
-         *       future use
-         * 2. Read best configuration from disk
-         * 3. Compute the packing using the best configuration
-         * 4. Allocate a GraphicBuffer
-         * 5. Render assets in the buffer
-         */
-        @Override
-        public void run() {
-            Configuration config = chooseConfiguration(mBitmaps, mPixelCount, mVersionName);
-            if (DEBUG_ATLAS) Log.d(LOG_TAG, "Loaded configuration: " + config);
-
-            if (config != null) {
-                mBuffer = GraphicBuffer.create(config.width, config.height,
-                        PixelFormat.RGBA_8888, GRAPHIC_BUFFER_USAGE);
-
-                if (mBuffer != null) {
-                    Atlas atlas = new Atlas(config.type, config.width, config.height, config.flags);
-                    if (renderAtlas(mBuffer, atlas, config.count)) {
-                        mAtlasReady.set(true);
-                    }
-                }
-            }
-        }
-
-        /**
-         * Renders a list of bitmaps into the atlas. The position of each bitmap
-         * was decided by the packing algorithm and will be honored by this
-         * method.
-         *
-         * @param buffer The buffer to render the atlas entries into
-         * @param atlas The atlas to pack the bitmaps into
-         * @param packCount The number of bitmaps that will be packed in the atlas
-         *
-         * @return true if the atlas was rendered, false otherwise
-         */
-        @SuppressWarnings("MismatchedReadAndWriteOfArray")
-        private boolean renderAtlas(GraphicBuffer buffer, Atlas atlas, int packCount) {
-            // Use a Source blend mode to improve performance, the target bitmap
-            // will be zero'd out so there's no need to waste time applying blending
-            final Paint paint = new Paint();
-            paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC));
-
-            // We always render the atlas into a bitmap. This bitmap is then
-            // uploaded into the GraphicBuffer using OpenGL to swizzle the content
-            final Bitmap atlasBitmap = Bitmap.createBitmap(
-                    buffer.getWidth(), buffer.getHeight(), Bitmap.Config.ARGB_8888);
-            final Canvas canvas = new Canvas(atlasBitmap);
-
-            final Atlas.Entry entry = new Atlas.Entry();
-
-            mAtlasMap = new long[packCount * ATLAS_MAP_ENTRY_FIELD_COUNT];
-            long[] atlasMap = mAtlasMap;
-            int mapIndex = 0;
-
-            boolean result = false;
-            final long startRender = System.nanoTime();
-            final int count = mBitmaps.size();
-
-            for (int i = 0; i < count; i++) {
-                final Bitmap bitmap = mBitmaps.get(i);
-                if (atlas.pack(bitmap.getWidth(), bitmap.getHeight(), entry) != null) {
-                    // We have more bitmaps to pack than the current configuration
-                    // says, we were most likely not able to detect a change in the
-                    // list of preloaded drawables, abort and delete the configuration
-                    if (mapIndex >= mAtlasMap.length) {
-                        deleteDataFile();
-                        break;
-                    }
-
-                    canvas.save();
-                    canvas.translate(entry.x, entry.y);
-                    canvas.drawBitmap(bitmap, 0.0f, 0.0f, null);
-                    canvas.restore();
-                    atlasMap[mapIndex++] = bitmap.refSkPixelRef();
-                    atlasMap[mapIndex++] = entry.x;
-                    atlasMap[mapIndex++] = entry.y;
-                }
-            }
-
-            final long endRender = System.nanoTime();
-            releaseCanvas(canvas, atlasBitmap);
-            result = nUploadAtlas(buffer, atlasBitmap);
-            atlasBitmap.recycle();
-            final long endUpload = System.nanoTime();
-
-            if (DEBUG_ATLAS) {
-                float renderDuration = (endRender - startRender) / 1000.0f / 1000.0f;
-                float uploadDuration = (endUpload - endRender) / 1000.0f / 1000.0f;
-                Log.d(LOG_TAG, String.format("Rendered atlas in %.2fms (%.2f+%.2fms)",
-                        renderDuration + uploadDuration, renderDuration, uploadDuration));
-            }
-
-            return result;
-        }
-
-        /**
-         * Releases the canvas used to render into the buffer. Calling this method
-         * will release any resource previously acquired. If {@link #DEBUG_ATLAS_TEXTURE}
-         * is turend on, calling this method will write the content of the atlas
-         * to disk in /data/system/atlas.png for debugging.
-         */
-        private void releaseCanvas(Canvas canvas, Bitmap atlasBitmap) {
-            canvas.setBitmap(null);
-            if (DEBUG_ATLAS_TEXTURE) {
-
-                File systemDirectory = new File(Environment.getDataDirectory(), "system");
-                File dataFile = new File(systemDirectory, "atlas.png");
-
-                try {
-                    FileOutputStream out = new FileOutputStream(dataFile);
-                    atlasBitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
-                    out.close();
-                } catch (FileNotFoundException e) {
-                    // Ignore
-                } catch (IOException e) {
-                    // Ignore
-                }
-            }
-        }
-    }
-
-    private static native boolean nUploadAtlas(GraphicBuffer buffer, Bitmap bitmap);
-
-    @Override
-    public boolean isCompatible(int ppid) {
-        return ppid == android.os.Process.myPpid();
-    }
-
-    @Override
-    public GraphicBuffer getBuffer() throws RemoteException {
-        return mAtlasReady.get() ? mBuffer : null;
-    }
-
-    @Override
-    public long[] getMap() throws RemoteException {
-        return mAtlasReady.get() ? mAtlasMap : null;
-    }
-
-    /**
-     * Finds the best atlas configuration to pack the list of supplied bitmaps.
-     * This method takes advantage of multi-core systems by spawning a number
-     * of threads equal to the number of available cores.
-     */
-    private static Configuration computeBestConfiguration(
-            ArrayList<Bitmap> bitmaps, int pixelCount) {
-        if (DEBUG_ATLAS) Log.d(LOG_TAG, "Computing best atlas configuration...");
-
-        long begin = System.nanoTime();
-        List<WorkerResult> results = Collections.synchronizedList(new ArrayList<WorkerResult>());
-
-        // Don't bother with an extra thread if there's only one processor
-        int cpuCount = Runtime.getRuntime().availableProcessors();
-        if (cpuCount == 1) {
-            new ComputeWorker(MIN_SIZE, MAX_SIZE, STEP, bitmaps, pixelCount, results, null).run();
-        } else {
-            int start = MIN_SIZE + (cpuCount - 1) * STEP;
-            int end = MAX_SIZE;
-            int step = STEP * cpuCount;
-
-            final CountDownLatch signal = new CountDownLatch(cpuCount);
-
-            for (int i = 0; i < cpuCount; i++, start -= STEP, end -= STEP) {
-                ComputeWorker worker = new ComputeWorker(start, end, step,
-                        bitmaps, pixelCount, results, signal);
-                new Thread(worker, "Atlas Worker #" + (i + 1)).start();
-            }
-
-            boolean isAllWorkerFinished;
-            try {
-                isAllWorkerFinished = signal.await(10, TimeUnit.SECONDS);
-            } catch (InterruptedException e) {
-                Log.w(LOG_TAG, "Could not complete configuration computation");
-                return null;
-            }
-
-            if (!isAllWorkerFinished) {
-                // We have to abort here, otherwise the async updates on "results" would crash the
-                // sort later.
-                Log.w(LOG_TAG, "Could not complete configuration computation before timeout.");
-                return null;
-            }
-        }
-
-        // Maximize the number of packed bitmaps, minimize the texture size
-        Collections.sort(results, new Comparator<WorkerResult>() {
-            @Override
-            public int compare(WorkerResult r1, WorkerResult r2) {
-                int delta = r2.count - r1.count;
-                if (delta != 0) return delta;
-                return r1.width * r1.height - r2.width * r2.height;
-            }
-        });
-
-        if (DEBUG_ATLAS) {
-            float delay = (System.nanoTime() - begin) / 1000.0f / 1000.0f / 1000.0f;
-            Log.d(LOG_TAG, String.format("Found best atlas configuration (out of %d) in %.2fs",
-                    results.size(), delay));
-        }
-
-        WorkerResult result = results.get(0);
-        return new Configuration(result.type, result.width, result.height, result.count);
-    }
-
-    /**
-     * Returns the path to the file containing the best computed
-     * atlas configuration.
-     */
-    private static File getDataFile() {
-        File systemDirectory = new File(Environment.getDataDirectory(), "system");
-        return new File(systemDirectory, "framework_atlas.config");
-    }
-
-    private static void deleteDataFile() {
-        Log.w(LOG_TAG, "Current configuration inconsistent with assets list");
-        if (!getDataFile().delete()) {
-            Log.w(LOG_TAG, "Could not delete the current configuration");
-        }
-    }
-
-    private File getFrameworkResourcesFile() {
-        return new File(mContext.getApplicationInfo().sourceDir);
-    }
-
-    /**
-     * Returns the best known atlas configuration. This method will either
-     * read the configuration from disk or start a brute-force search
-     * and save the result out to disk.
-     */
-    private Configuration chooseConfiguration(ArrayList<Bitmap> bitmaps, int pixelCount,
-            String versionName) {
-        Configuration config = null;
-
-        final File dataFile = getDataFile();
-        if (dataFile.exists()) {
-            config = readConfiguration(dataFile, versionName);
-        }
-
-        if (config == null) {
-            config = computeBestConfiguration(bitmaps, pixelCount);
-            if (config != null) writeConfiguration(config, dataFile, versionName);
-        }
-
-        return config;
-    }
-
-    /**
-     * Writes the specified atlas configuration to the specified file.
-     */
-    private void writeConfiguration(Configuration config, File file, String versionName) {
-        BufferedWriter writer = null;
-        try {
-            writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file)));
-            writer.write(getBuildIdentifier(versionName));
-            writer.newLine();
-            writer.write(config.type.toString());
-            writer.newLine();
-            writer.write(String.valueOf(config.width));
-            writer.newLine();
-            writer.write(String.valueOf(config.height));
-            writer.newLine();
-            writer.write(String.valueOf(config.count));
-            writer.newLine();
-            writer.write(String.valueOf(config.flags));
-            writer.newLine();
-        } catch (FileNotFoundException e) {
-            Log.w(LOG_TAG, "Could not write " + file, e);
-        } catch (IOException e) {
-            Log.w(LOG_TAG, "Could not write " + file, e);
-        } finally {
-            if (writer != null) {
-                try {
-                    writer.close();
-                } catch (IOException e) {
-                    // Ignore
-                }
-            }
-        }
-    }
-
-    /**
-     * Reads an atlas configuration from the specified file. This method
-     * returns null if an error occurs or if the configuration is invalid.
-     */
-    private Configuration readConfiguration(File file, String versionName) {
-        BufferedReader reader = null;
-        Configuration config = null;
-        try {
-            reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
-
-            if (checkBuildIdentifier(reader, versionName)) {
-                Atlas.Type type = Atlas.Type.valueOf(reader.readLine());
-                int width = readInt(reader, MIN_SIZE, MAX_SIZE);
-                int height = readInt(reader, MIN_SIZE, MAX_SIZE);
-                int count = readInt(reader, 0, Integer.MAX_VALUE);
-                int flags = readInt(reader, Integer.MIN_VALUE, Integer.MAX_VALUE);
-
-                config = new Configuration(type, width, height, count, flags);
-            }
-        } catch (IllegalArgumentException e) {
-            Log.w(LOG_TAG, "Invalid parameter value in " + file, e);
-        } catch (FileNotFoundException e) {
-            Log.w(LOG_TAG, "Could not read " + file, e);
-        } catch (IOException e) {
-            Log.w(LOG_TAG, "Could not read " + file, e);
-        } finally {
-            if (reader != null) {
-                try {
-                    reader.close();
-                } catch (IOException e) {
-                    // Ignore
-                }
-            }
-        }
-        return config;
-    }
-
-    private static int readInt(BufferedReader reader, int min, int max) throws IOException {
-        return Math.max(min, Math.min(max, Integer.parseInt(reader.readLine())));
-    }
-
-    /**
-     * Compares the next line in the specified buffered reader to the current
-     * build identifier. Returns whether the two values are equal.
-     *
-     * @see #getBuildIdentifier(String)
-     */
-    private boolean checkBuildIdentifier(BufferedReader reader, String versionName)
-            throws IOException {
-        String deviceBuildId = getBuildIdentifier(versionName);
-        String buildId = reader.readLine();
-        return deviceBuildId.equals(buildId);
-    }
-
-    /**
-     * Returns an identifier for the current build that can be used to detect
-     * likely changes to framework resources. The build identifier is made of
-     * several distinct values:
-     *
-     * build fingerprint/framework version name/file size of framework resources apk
-     *
-     * Only the build fingerprint should be necessary on user builds but
-     * the other values are useful to detect changes on eng builds during
-     * development.
-     *
-     * This identifier does not attempt to be exact: a new identifier does not
-     * necessarily mean the preloaded drawables have changed. It is important
-     * however that whenever the list of preloaded drawables changes, this
-     * identifier changes as well.
-     *
-     * @see #checkBuildIdentifier(java.io.BufferedReader, String)
-     */
-    private String getBuildIdentifier(String versionName) {
-        return SystemProperties.get("ro.build.fingerprint", "") + '/' + versionName + '/' +
-                String.valueOf(getFrameworkResourcesFile().length());
-    }
-
-    /**
-     * Atlas configuration. Specifies the algorithm, dimensions and flags to use.
-     */
-    private static class Configuration {
-        final Atlas.Type type;
-        final int width;
-        final int height;
-        final int count;
-        final int flags;
-
-        Configuration(Atlas.Type type, int width, int height, int count) {
-            this(type, width, height, count, Atlas.FLAG_DEFAULTS);
-        }
-
-        Configuration(Atlas.Type type, int width, int height, int count, int flags) {
-            this.type = type;
-            this.width = width;
-            this.height = height;
-            this.count = count;
-            this.flags = flags;
-        }
-
-        @Override
-        public String toString() {
-            return type.toString() + " (" + width + "x" + height + ") flags=0x" +
-                    Integer.toHexString(flags) + " count=" + count;
-        }
-    }
-
-    /**
-     * Used during the brute-force search to gather information about each
-     * variant of the packing algorithm.
-     */
-    private static class WorkerResult {
-        Atlas.Type type;
-        int width;
-        int height;
-        int count;
-
-        WorkerResult(Atlas.Type type, int width, int height, int count) {
-            this.type = type;
-            this.width = width;
-            this.height = height;
-            this.count = count;
-        }
-
-        @Override
-        public String toString() {
-            return String.format("%s %dx%d", type.toString(), width, height);
-        }
-    }
-
-    /**
-     * A compute worker will try a finite number of variations of the packing
-     * algorithms and save the results in a supplied list.
-     */
-    private static class ComputeWorker implements Runnable {
-        private final int mStart;
-        private final int mEnd;
-        private final int mStep;
-        private final List<Bitmap> mBitmaps;
-        private final List<WorkerResult> mResults;
-        private final CountDownLatch mSignal;
-        private final int mThreshold;
-
-        /**
-         * Creates a new compute worker to brute-force through a range of
-         * packing algorithms variants.
-         *
-         * @param start The minimum texture width to try
-         * @param end The maximum texture width to try
-         * @param step The number of pixels to increment the texture width by at each step
-         * @param bitmaps The list of bitmaps to pack in the atlas
-         * @param pixelCount The total number of pixels occupied by the list of bitmaps
-         * @param results The list of results in which to save the brute-force search results
-         * @param signal Latch to decrement when this worker is done, may be null
-         */
-        ComputeWorker(int start, int end, int step, List<Bitmap> bitmaps, int pixelCount,
-                List<WorkerResult> results, CountDownLatch signal) {
-            mStart = start;
-            mEnd = end;
-            mStep = step;
-            mBitmaps = bitmaps;
-            mResults = results;
-            mSignal = signal;
-
-            // Minimum number of pixels we want to be able to pack
-            int threshold = (int) (pixelCount * PACKING_THRESHOLD);
-            // Make sure we can find at least one configuration
-            while (threshold > MAX_SIZE * MAX_SIZE) {
-                threshold >>= 1;
-            }
-            mThreshold = threshold;
-        }
-
-        @Override
-        public void run() {
-            if (DEBUG_ATLAS) Log.d(LOG_TAG, "Running " + Thread.currentThread().getName());
-
-            Atlas.Entry entry = new Atlas.Entry();
-
-            for (int width = mEnd; width > mStart; width -= mStep) {
-                for (int height = MAX_SIZE; height > MIN_SIZE; height -= STEP) {
-                    // If the atlas is not big enough, skip it
-                    if (width * height <= mThreshold) continue;
-
-                    boolean packSuccess = false;
-
-                    for (Atlas.Type type : Atlas.Type.values()) {
-                        final int count = packBitmaps(type, width, height, entry);
-                        if (count > 0) {
-                            mResults.add(new WorkerResult(type, width, height, count));
-                            if (count == mBitmaps.size()) {
-                                // If we were able to pack everything let's stop here
-                                // Changing the type further won't make things better
-                                packSuccess = true;
-                                break;
-                            }
-                        }
-                    }
-
-                    // If we were not able to pack everything let's stop here
-                    // Decreasing the height further won't make things better
-                    if (!packSuccess) {
-                        break;
-                    }
-                }
-            }
-
-            if (mSignal != null) {
-                mSignal.countDown();
-            }
-        }
-
-        private int packBitmaps(Atlas.Type type, int width, int height, Atlas.Entry entry) {
-            int total = 0;
-            Atlas atlas = new Atlas(type, width, height);
-
-            final int count = mBitmaps.size();
-            for (int i = 0; i < count; i++) {
-                final Bitmap bitmap = mBitmaps.get(i);
-                if (atlas.pack(bitmap.getWidth(), bitmap.getHeight(), entry) != null) {
-                    total++;
-                }
-            }
-
-            return total;
-        }
-    }
-}
diff --git a/services/core/jni/Android.mk b/services/core/jni/Android.mk
index 9459517..a65dd99 100644
--- a/services/core/jni/Android.mk
+++ b/services/core/jni/Android.mk
@@ -7,7 +7,6 @@
 LOCAL_SRC_FILES += \
     $(LOCAL_REL_DIR)/com_android_server_AlarmManagerService.cpp \
     $(LOCAL_REL_DIR)/com_android_server_am_BatteryStatsService.cpp \
-    $(LOCAL_REL_DIR)/com_android_server_AssetAtlasService.cpp \
     $(LOCAL_REL_DIR)/com_android_server_connectivity_Vpn.cpp \
     $(LOCAL_REL_DIR)/com_android_server_ConsumerIrService.cpp \
     $(LOCAL_REL_DIR)/com_android_server_HardwarePropertiesManagerService.cpp \
diff --git a/services/core/jni/com_android_server_AssetAtlasService.cpp b/services/core/jni/com_android_server_AssetAtlasService.cpp
deleted file mode 100644
index d004e30..0000000
--- a/services/core/jni/com_android_server_AssetAtlasService.cpp
+++ /dev/null
@@ -1,216 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "AssetAtlasService"
-
-#include "jni.h"
-#include "JNIHelp.h"
-#include "android/graphics/GraphicsJNI.h"
-
-#include <android_view_GraphicBuffer.h>
-#include <cutils/log.h>
-
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-// Disable warnings for Skia.
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#include <SkCanvas.h>
-#include <SkBitmap.h>
-#pragma GCC diagnostic pop
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-// Defines
-// ----------------------------------------------------------------------------
-
-// Defines how long to wait for the GPU when uploading the atlas
-// This timeout is defined in nanoseconds (see EGL_KHR_fence_sync extension)
-#define FENCE_TIMEOUT 2000000000
-
-// ----------------------------------------------------------------------------
-// Canvas management
-// ----------------------------------------------------------------------------
-
-#define CLEANUP_GL_AND_RETURN(result) \
-    if (fence != EGL_NO_SYNC_KHR) eglDestroySyncKHR(display, fence); \
-    if (image) eglDestroyImageKHR(display, image); \
-    if (texture) glDeleteTextures(1, &texture); \
-    if (surface != EGL_NO_SURFACE) eglDestroySurface(display, surface); \
-    if (context != EGL_NO_CONTEXT) eglDestroyContext(display, context); \
-    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); \
-    eglReleaseThread(); \
-    eglTerminate(display); \
-    return result;
-
-static jboolean com_android_server_AssetAtlasService_upload(JNIEnv* env, jobject,
-        jobject graphicBuffer, jobject bitmapHandle) {
-
-    SkBitmap bitmap;
-    GraphicsJNI::getSkBitmap(env, bitmapHandle, &bitmap);
-    SkAutoLockPixels alp(bitmap);
-
-    // The goal of this method is to copy the bitmap into the GraphicBuffer
-    // using the GPU to swizzle the texture content
-    sp<GraphicBuffer> buffer(graphicBufferForJavaObject(env, graphicBuffer));
-
-    if (buffer != NULL) {
-        EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-        if (display == EGL_NO_DISPLAY) return JNI_FALSE;
-
-        EGLint major;
-        EGLint minor;
-        if (!eglInitialize(display, &major, &minor)) {
-            ALOGW("Could not initialize EGL");
-            return JNI_FALSE;
-        }
-
-        // We're going to use a 1x1 pbuffer surface later on
-        // The configuration doesn't really matter for what we're trying to do
-        EGLint configAttrs[] = {
-                EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
-                EGL_RED_SIZE, 8,
-                EGL_GREEN_SIZE, 8,
-                EGL_BLUE_SIZE, 8,
-                EGL_ALPHA_SIZE, 0,
-                EGL_DEPTH_SIZE, 0,
-                EGL_STENCIL_SIZE, 0,
-                EGL_NONE
-        };
-        EGLConfig configs[1];
-        EGLint configCount;
-        if (!eglChooseConfig(display, configAttrs, configs, 1, &configCount)) {
-            ALOGW("Could not select EGL configuration");
-            eglReleaseThread();
-            eglTerminate(display);
-            return JNI_FALSE;
-        }
-        if (configCount <= 0) {
-            ALOGW("Could not find EGL configuration");
-            eglReleaseThread();
-            eglTerminate(display);
-            return JNI_FALSE;
-        }
-
-        // These objects are initialized below but the default "null"
-        // values are used to cleanup properly at any point in the
-        // initialization sequence
-        GLuint texture = 0;
-        EGLImageKHR image = EGL_NO_IMAGE_KHR;
-        EGLSurface surface = EGL_NO_SURFACE;
-        EGLSyncKHR fence = EGL_NO_SYNC_KHR;
-
-        EGLint attrs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
-        EGLContext context = eglCreateContext(display, configs[0], EGL_NO_CONTEXT, attrs);
-        if (context == EGL_NO_CONTEXT) {
-            ALOGW("Could not create EGL context");
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        // Create the 1x1 pbuffer
-        EGLint surfaceAttrs[] = { EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE };
-        surface = eglCreatePbufferSurface(display, configs[0], surfaceAttrs);
-        if (surface == EGL_NO_SURFACE) {
-            ALOGW("Could not create EGL surface");
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        if (!eglMakeCurrent(display, surface, surface, context)) {
-            ALOGW("Could not change current EGL context");
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        // We use an EGLImage to access the content of the GraphicBuffer
-        // The EGL image is later bound to a 2D texture
-        EGLClientBuffer clientBuffer = (EGLClientBuffer) buffer->getNativeBuffer();
-        EGLint imageAttrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };
-        image = eglCreateImageKHR(display, EGL_NO_CONTEXT,
-                EGL_NATIVE_BUFFER_ANDROID, clientBuffer, imageAttrs);
-        if (image == EGL_NO_IMAGE_KHR) {
-            ALOGW("Could not create EGL image");
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        glGenTextures(1, &texture);
-        glBindTexture(GL_TEXTURE_2D, texture);
-        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
-        if (glGetError() != GL_NO_ERROR) {
-            ALOGW("Could not create/bind texture");
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        // Upload the content of the bitmap in the GraphicBuffer
-        glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap.bytesPerPixel());
-        glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap.width(), bitmap.height(),
-                GL_RGBA, GL_UNSIGNED_BYTE, bitmap.getPixels());
-        if (glGetError() != GL_NO_ERROR) {
-            ALOGW("Could not upload to texture");
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        // The fence is used to wait for the texture upload to finish
-        // properly. We cannot rely on glFlush() and glFinish() as
-        // some drivers completely ignore these API calls
-        fence = eglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL);
-        if (fence == EGL_NO_SYNC_KHR) {
-            ALOGW("Could not create sync fence %#x", eglGetError());
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        // The flag EGL_SYNC_FLUSH_COMMANDS_BIT_KHR will trigger a
-        // pipeline flush (similar to what a glFlush() would do.)
-        EGLint waitStatus = eglClientWaitSyncKHR(display, fence,
-                EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, FENCE_TIMEOUT);
-        if (waitStatus != EGL_CONDITION_SATISFIED_KHR) {
-            ALOGW("Failed to wait for the fence %#x", eglGetError());
-            CLEANUP_GL_AND_RETURN(JNI_FALSE);
-        }
-
-        CLEANUP_GL_AND_RETURN(JNI_TRUE);
-    }
-
-    return JNI_FALSE;
-}
-
-// ----------------------------------------------------------------------------
-// JNI Glue
-// ----------------------------------------------------------------------------
-
-#define FIND_CLASS(var, className) \
-        var = env->FindClass(className); \
-        LOG_FATAL_IF(! (var), "Unable to find class " className);
-
-#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
-        var = env->GetMethodID(clazz, methodName, methodDescriptor); \
-        LOG_FATAL_IF(!(var), "Unable to find method " methodName);
-
-const char* const kClassPathName = "com/android/server/AssetAtlasService";
-
-static const JNINativeMethod gMethods[] = {
-    { "nUploadAtlas", "(Landroid/view/GraphicBuffer;Landroid/graphics/Bitmap;)Z",
-            (void*) com_android_server_AssetAtlasService_upload },
-};
-
-int register_android_server_AssetAtlasService(JNIEnv* env) {
-    return jniRegisterNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods));
-}
-
-};
diff --git a/services/core/jni/onload.cpp b/services/core/jni/onload.cpp
index 327019d..d69c37f 100644
--- a/services/core/jni/onload.cpp
+++ b/services/core/jni/onload.cpp
@@ -21,7 +21,6 @@
 
 namespace android {
 int register_android_server_AlarmManagerService(JNIEnv* env);
-int register_android_server_AssetAtlasService(JNIEnv* env);
 int register_android_server_BatteryStatsService(JNIEnv* env);
 int register_android_server_ConsumerIrService(JNIEnv *env);
 int register_android_server_InputApplicationHandle(JNIEnv* env);
@@ -76,7 +75,6 @@
     register_android_server_location_GnssLocationProvider(env);
     register_android_server_location_FlpHardwareProvider(env);
     register_android_server_connectivity_Vpn(env);
-    register_android_server_AssetAtlasService(env);
     register_android_server_ConsumerIrService(env);
     register_android_server_BatteryStatsService(env);
     register_android_server_hdmi_HdmiCecController(env);
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 769b5ee9..deb5238 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -747,7 +747,6 @@
         LocationManagerService location = null;
         CountryDetectorService countryDetector = null;
         ILockSettings lockSettings = null;
-        AssetAtlasService atlas = null;
         MediaRouterService mediaRouter = null;
 
         // Bring up services needed for UI.
@@ -1235,17 +1234,6 @@
                 traceEnd();
             }
 
-            if (!disableNonCoreServices && ZygoteInit.PRELOAD_RESOURCES) {
-                traceBeginAndSlog("StartAssetAtlasService");
-                try {
-                    atlas = new AssetAtlasService(context);
-                    ServiceManager.addService(AssetAtlasService.ASSET_ATLAS_SERVICE, atlas);
-                } catch (Throwable e) {
-                    reportWtf("starting AssetAtlasService", e);
-                }
-                traceEnd();
-            }
-
             if (!disableNonCoreServices) {
                 traceBeginAndSlog("AddGraphicsStatsService");
                 ServiceManager.addService(GraphicsStatsService.GRAPHICS_STATS_SERVICE,
@@ -1465,7 +1453,6 @@
         final CountryDetectorService countryDetectorF = countryDetector;
         final NetworkTimeUpdateService networkTimeUpdaterF = networkTimeUpdater;
         final CommonTimeManagementService commonTimeMgmtServiceF = commonTimeMgmtService;
-        final AssetAtlasService atlasF = atlas;
         final InputManagerService inputManagerF = inputManager;
         final TelephonyRegistry telephonyRegistryF = telephonyRegistry;
         final MediaRouterService mediaRouterF = mediaRouter;
@@ -1583,13 +1570,6 @@
                     reportWtf("Notifying CommonTimeManagementService running", e);
                 }
                 traceEnd();
-                traceBeginAndSlog("MakeAtlasServiceReady");
-                try {
-                    if (atlasF != null) atlasF.systemRunning();
-                } catch (Throwable e) {
-                    reportWtf("Notifying AssetAtlasService running", e);
-                }
-                traceEnd();
                 traceBeginAndSlog("MakeInputManagerServiceReady");
                 try {
                     // TODO(BT) Pass parameter to input manager
diff --git a/tools/layoutlib/bridge/src/android/graphics/Bitmap_Delegate.java b/tools/layoutlib/bridge/src/android/graphics/Bitmap_Delegate.java
index bcfe3bf..090cee8 100644
--- a/tools/layoutlib/bridge/src/android/graphics/Bitmap_Delegate.java
+++ b/tools/layoutlib/bridge/src/android/graphics/Bitmap_Delegate.java
@@ -601,14 +601,6 @@
         return Arrays.equals(argb1, argb2);
     }
 
-    // Only used by AssetAtlasService, which we don't care about.
-    @LayoutlibDelegate
-    /*package*/ static long nativeRefPixelRef(long nativeBitmap) {
-        // Hack: This is called by Bitmap.refSkPixelRef() and LayoutLib uses that method to get
-        // the native pointer from a Bitmap. So, we return nativeBitmap here.
-        return nativeBitmap;
-    }
-
     // ---- Private delegate/helper methods ----
 
     private Bitmap_Delegate(BufferedImage image, Config config) {