Add shadow support to new reorderer/renderer

Doesn't yet use correct lighting info (esp. in layers), or
tessellate shadows asynchronously

Change-Id: I9ccec24b28869be42138a9bb234b1af874291a44
diff --git a/libs/hwui/BakedOpRenderer.cpp b/libs/hwui/BakedOpRenderer.cpp
index 2fca5ea..9380992 100644
--- a/libs/hwui/BakedOpRenderer.cpp
+++ b/libs/hwui/BakedOpRenderer.cpp
@@ -19,6 +19,7 @@
 #include "Caches.h"
 #include "Glop.h"
 #include "GlopBuilder.h"
+#include "VertexBuffer.h"
 #include "renderstate/RenderState.h"
 #include "utils/FatVector.h"
 #include "utils/GLUtils.h"
@@ -45,7 +46,7 @@
     caches.textureState().bindTexture(GL_TEXTURE_2D, texture.id);
 
     texture.setWrap(GL_CLAMP_TO_EDGE, false, false, GL_TEXTURE_2D);
-    // not setting filter on texture, since it's set when drawing, based on transform
+    // not setting filter on texture, since it's set when rendering, based on transform
 
     glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture.width, texture.height, 0,
@@ -55,7 +56,7 @@
 void OffscreenBuffer::updateMeshFromRegion() {
     // avoid T-junctions as they cause artifacts in between the resultant
     // geometry when complex transforms occur.
-    // TODO: generate the safeRegion only if necessary based on drawing transform
+    // TODO: generate the safeRegion only if necessary based on rendering transform
     Region safeRegion = Region::createTJunctionFreeRegion(region);
 
     size_t count;
@@ -108,15 +109,15 @@
     delete offscreenBuffer;
 }
 
-OffscreenBuffer* BakedOpRenderer::createLayer(uint32_t width, uint32_t height) {
-    LOG_ALWAYS_FATAL_IF(mRenderTarget.offscreenBuffer, "already has layer...");
-
+OffscreenBuffer* BakedOpRenderer::startTemporaryLayer(uint32_t width, uint32_t height) {
     OffscreenBuffer* buffer = createOffscreenBuffer(mRenderState, width, height);
-    startLayer(buffer);
+    startRepaintLayer(buffer);
     return buffer;
 }
 
-void BakedOpRenderer::startLayer(OffscreenBuffer* offscreenBuffer) {
+void BakedOpRenderer::startRepaintLayer(OffscreenBuffer* offscreenBuffer) {
+    LOG_ALWAYS_FATAL_IF(mRenderTarget.offscreenBuffer, "already has layer...");
+
     mRenderTarget.offscreenBuffer = offscreenBuffer;
 
     // create and bind framebuffer
@@ -261,6 +262,71 @@
     renderer.renderGlop(state, glop);
 }
 
+namespace VertexBufferRenderFlags {
+    enum {
+        Offset = 0x1,
+        ShadowInterp = 0x2,
+    };
+}
+
+static void renderVertexBuffer(BakedOpRenderer& renderer, const BakedOpState& state,
+        const VertexBuffer& vertexBuffer, float translateX, float translateY,
+        SkPaint& paint, int vertexBufferRenderFlags) {
+    if (CC_LIKELY(vertexBuffer.getVertexCount())) {
+        bool shadowInterp = vertexBufferRenderFlags & VertexBufferRenderFlags::ShadowInterp;
+        const int transformFlags = TransformFlags::OffsetByFudgeFactor;
+        Glop glop;
+        GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
+                .setRoundRectClipState(state.roundRectClipState)
+                .setMeshVertexBuffer(vertexBuffer, shadowInterp)
+                .setFillPaint(paint, state.alpha)
+                .setTransform(state.computedState.transform, transformFlags)
+                .setModelViewOffsetRect(translateX, translateY, vertexBuffer.getBounds())
+                .build();
+        renderer.renderGlop(state, glop);
+    }
+}
+
+static void renderShadow(BakedOpRenderer& renderer, const BakedOpState& state, float casterAlpha,
+        const VertexBuffer* ambientShadowVertexBuffer, const VertexBuffer* spotShadowVertexBuffer) {
+    SkPaint paint;
+    paint.setAntiAlias(true); // want to use AlphaVertex
+
+    // The caller has made sure casterAlpha > 0.
+    uint8_t ambientShadowAlpha = 128u; //TODO: mAmbientShadowAlpha;
+    if (CC_UNLIKELY(Properties::overrideAmbientShadowStrength >= 0)) {
+        ambientShadowAlpha = Properties::overrideAmbientShadowStrength;
+    }
+    if (ambientShadowVertexBuffer && ambientShadowAlpha > 0) {
+        paint.setAlpha((uint8_t)(casterAlpha * ambientShadowAlpha));
+        renderVertexBuffer(renderer, state, *ambientShadowVertexBuffer, 0, 0,
+                paint, VertexBufferRenderFlags::ShadowInterp);
+    }
+
+    uint8_t spotShadowAlpha = 128u; //TODO: mSpotShadowAlpha;
+    if (CC_UNLIKELY(Properties::overrideSpotShadowStrength >= 0)) {
+        spotShadowAlpha = Properties::overrideSpotShadowStrength;
+    }
+    if (spotShadowVertexBuffer && spotShadowAlpha > 0) {
+        paint.setAlpha((uint8_t)(casterAlpha * spotShadowAlpha));
+        renderVertexBuffer(renderer, state, *spotShadowVertexBuffer, 0, 0,
+                paint, VertexBufferRenderFlags::ShadowInterp);
+    }
+}
+
+void BakedOpDispatcher::onShadowOp(BakedOpRenderer& renderer, const ShadowOp& op, const BakedOpState& state) {
+    TessellationCache::vertexBuffer_pair_t buffers;
+    Vector3 lightCenter = { 300, 300, 300 }; // TODO!
+    float lightRadius = 150; // TODO!
+
+    renderer.caches().tessellationCache.getShadowBuffers(&state.computedState.transform,
+            op.localClipRect, op.casterAlpha >= 1.0f, op.casterPath,
+            &op.shadowMatrixXY, &op.shadowMatrixZ, lightCenter, lightRadius,
+            buffers);
+
+    renderShadow(renderer, state, op.casterAlpha, buffers.first, buffers.second);
+}
+
 void BakedOpDispatcher::onSimpleRectsOp(BakedOpRenderer& renderer, const SimpleRectsOp& op, const BakedOpState& state) {
     Glop glop;
     GlopBuilder(renderer.renderState(), renderer.caches(), &glop)
diff --git a/libs/hwui/BakedOpRenderer.h b/libs/hwui/BakedOpRenderer.h
index aa1e67d..4c3a2d0 100644
--- a/libs/hwui/BakedOpRenderer.h
+++ b/libs/hwui/BakedOpRenderer.h
@@ -81,8 +81,8 @@
 
     void startFrame(uint32_t width, uint32_t height);
     void endFrame();
-    OffscreenBuffer* createLayer(uint32_t width, uint32_t height);
-    void startLayer(OffscreenBuffer* offscreenBuffer);
+    OffscreenBuffer* startTemporaryLayer(uint32_t width, uint32_t height);
+    void startRepaintLayer(OffscreenBuffer* offscreenBuffer);
     void endLayer();
 
     Texture* getTexture(const SkBitmap* bitmap);
diff --git a/libs/hwui/BakedOpState.h b/libs/hwui/BakedOpState.h
index ddb8c84..9a40c3b 100644
--- a/libs/hwui/BakedOpState.h
+++ b/libs/hwui/BakedOpState.h
@@ -89,6 +89,21 @@
          *         and early return null in one place.
          */
     }
+
+    /**
+     * Constructor for unbounded ops without transform/clip (namely shadows)
+     *
+     * Since the op doesn't have known bounds, we conservatively set the mapped bounds
+     * to the current clipRect, and clipSideFlags to Full.
+     */
+    ResolvedRenderState(const Snapshot& snapshot) {
+        transform = *snapshot.transform;
+        clipRect = snapshot.getRenderTargetClip();
+        clippedBounds = clipRect;
+        transform.mapRect(clippedBounds);
+        clipSideFlags = OpClipSideFlags::Full;
+    }
+
     Matrix4 transform;
     Rect clipRect;
     int clipSideFlags = 0;
@@ -104,8 +119,7 @@
 public:
     static BakedOpState* tryConstruct(LinearAllocator& allocator,
             const Snapshot& snapshot, const RecordedOp& recordedOp) {
-        BakedOpState* bakedOp = new (allocator) BakedOpState(
-                snapshot, recordedOp);
+        BakedOpState* bakedOp = new (allocator) BakedOpState(snapshot, recordedOp);
         if (bakedOp->computedState.clippedBounds.isEmpty()) {
             // bounds are empty, so op is rejected
             allocator.rewindIfLastAlloc(bakedOp);
@@ -114,6 +128,14 @@
         return bakedOp;
     }
 
+    static BakedOpState* tryShadowOpConstruct(LinearAllocator& allocator,
+            const Snapshot& snapshot, const ShadowOp* shadowOpPtr) {
+        if (snapshot.getRenderTargetClip().isEmpty()) return nullptr;
+
+        // clip isn't empty, so construct the op
+        return new (allocator) BakedOpState(snapshot, shadowOpPtr);
+    }
+
     static void* operator new(size_t size, LinearAllocator& allocator) {
         return allocator.alloc(size);
     }
@@ -134,6 +156,13 @@
             , roundRectClipState(snapshot.roundRectClipState)
             , projectionPathMask(snapshot.projectionPathMask)
             , op(&recordedOp) {}
+
+    BakedOpState(const Snapshot& snapshot, const ShadowOp* shadowOpPtr)
+            : computedState(snapshot)
+            , alpha(snapshot.alpha)
+            , roundRectClipState(snapshot.roundRectClipState)
+            , projectionPathMask(snapshot.projectionPathMask)
+            , op(shadowOpPtr) {}
 };
 
 }; // namespace uirenderer
diff --git a/libs/hwui/OpReorderer.cpp b/libs/hwui/OpReorderer.cpp
index 68f80ea..80efaed 100644
--- a/libs/hwui/OpReorderer.cpp
+++ b/libs/hwui/OpReorderer.cpp
@@ -22,6 +22,7 @@
 #include "utils/PaintUtils.h"
 
 #include <SkCanvas.h>
+#include <SkPathOps.h>
 #include <utils/Trace.h>
 #include <utils/TypeHelpers.h>
 
@@ -312,7 +313,7 @@
         : mCanvasState(*this) {
     ATRACE_NAME("prepare drawing commands");
     mLayerReorderers.emplace_back(viewportWidth, viewportHeight);
-        mLayerStack.push_back(0);
+    mLayerStack.push_back(0);
 
     mCanvasState.initializeSaveStack(viewportWidth, viewportHeight,
             clip.fLeft, clip.fTop, clip.fRight, clip.fBottom,
@@ -347,7 +348,6 @@
 OpReorderer::OpReorderer(int viewportWidth, int viewportHeight, const DisplayList& displayList)
         : mCanvasState(*this) {
     ATRACE_NAME("prepare drawing commands");
-
     mLayerReorderers.emplace_back(viewportWidth, viewportHeight);
     mLayerStack.push_back(0);
 
@@ -462,8 +462,60 @@
 }
 
 void OpReorderer::deferShadow(const RenderNodeOp& casterNodeOp) {
-    // TODO
+    auto& node = *casterNodeOp.renderNode;
+    auto& properties = node.properties();
+
+    if (properties.getAlpha() <= 0.0f
+            || properties.getOutline().getAlpha() <= 0.0f
+            || !properties.getOutline().getPath()
+            || properties.getScaleX() == 0
+            || properties.getScaleY() == 0) {
+        // no shadow to draw
+        return;
+    }
+
+    const SkPath* casterOutlinePath = properties.getOutline().getPath();
+    const SkPath* revealClipPath = properties.getRevealClip().getPath();
+    if (revealClipPath && revealClipPath->isEmpty()) return;
+
+    float casterAlpha = properties.getAlpha() * properties.getOutline().getAlpha();
+
+    // holds temporary SkPath to store the result of intersections
+    SkPath* frameAllocatedPath = nullptr;
+    const SkPath* casterPath = casterOutlinePath;
+
+    // intersect the shadow-casting path with the reveal, if present
+    if (revealClipPath) {
+        frameAllocatedPath = createFrameAllocatedPath();
+
+        Op(*casterPath, *revealClipPath, kIntersect_SkPathOp, frameAllocatedPath);
+        casterPath = frameAllocatedPath;
+    }
+
+    // intersect the shadow-casting path with the clipBounds, if present
+    if (properties.getClippingFlags() & CLIP_TO_CLIP_BOUNDS) {
+        if (!frameAllocatedPath) {
+            frameAllocatedPath = createFrameAllocatedPath();
+        }
+        Rect clipBounds;
+        properties.getClippingRectForFlags(CLIP_TO_CLIP_BOUNDS, &clipBounds);
+        SkPath clipBoundsPath;
+        clipBoundsPath.addRect(clipBounds.left, clipBounds.top,
+                clipBounds.right, clipBounds.bottom);
+
+        Op(*casterPath, clipBoundsPath, kIntersect_SkPathOp, frameAllocatedPath);
+        casterPath = frameAllocatedPath;
+    }
+
+    ShadowOp* shadowOp = new (mAllocator) ShadowOp(casterNodeOp, casterAlpha, casterPath,
+            mCanvasState.getLocalClipBounds());
+    BakedOpState* bakedOpState = BakedOpState::tryShadowOpConstruct(
+            mAllocator, *mCanvasState.currentSnapshot(), shadowOp);
+    if (CC_LIKELY(bakedOpState)) {
+        currentLayer().deferUnmergeableOp(mAllocator, bakedOpState, OpBatchType::Shadow);
+    }
 }
+
 /**
  * Used to define a list of lambdas referencing private OpReorderer::onXXXXOp() methods.
  *
@@ -593,5 +645,9 @@
     LOG_ALWAYS_FATAL("unsupported");
 }
 
+void OpReorderer::onShadowOp(const ShadowOp& op) {
+    LOG_ALWAYS_FATAL("unsupported");
+}
+
 } // namespace uirenderer
 } // namespace android
diff --git a/libs/hwui/OpReorderer.h b/libs/hwui/OpReorderer.h
index 936b6ed..2c30f0d 100644
--- a/libs/hwui/OpReorderer.h
+++ b/libs/hwui/OpReorderer.h
@@ -51,6 +51,7 @@
         AlphaMaskTexture,
         Text,
         ColorText,
+        Shadow,
 
         Count // must be last
     };
@@ -152,11 +153,11 @@
             LayerReorderer& layer = mLayerReorderers[i];
             if (layer.renderNode) {
                 // cached HW layer - can't skip layer if empty
-                renderer.startLayer(layer.offscreenBuffer);
+                renderer.startRepaintLayer(layer.offscreenBuffer);
                 layer.replayBakedOpsImpl((void*)&renderer, receivers);
                 renderer.endLayer();
             } else if (!layer.empty()) { // save layer - skip entire layer if empty
-                layer.offscreenBuffer = renderer.createLayer(layer.width, layer.height);
+                layer.offscreenBuffer = renderer.startTemporaryLayer(layer.width, layer.height);
                 layer.replayBakedOpsImpl((void*)&renderer, receivers);
                 renderer.endLayer();
             }
@@ -210,6 +211,10 @@
 
     void replayBakedOpsImpl(void* arg, BakedOpDispatcher* receivers);
 
+    SkPath* createFrameAllocatedPath() {
+        mFrameAllocatedPaths.emplace_back(new SkPath);
+        return mFrameAllocatedPaths.back().get();
+    }
     /**
      * Declares all OpReorderer::onXXXXOp() methods for every RecordedOp type.
      *
@@ -220,6 +225,8 @@
     void on##Type(const Type& op);
     MAP_OPS(INTERNAL_OP_HANDLER)
 
+    std::vector<std::unique_ptr<SkPath> > mFrameAllocatedPaths;
+
     // List of every deferred layer's render state. Replayed in reverse order to render a frame.
     std::vector<LayerReorderer> mLayerReorderers;
 
diff --git a/libs/hwui/RecordedOp.h b/libs/hwui/RecordedOp.h
index 04af8e3..bb7a0a7c 100644
--- a/libs/hwui/RecordedOp.h
+++ b/libs/hwui/RecordedOp.h
@@ -43,6 +43,7 @@
         OP_FN(BitmapOp) \
         OP_FN(RectOp) \
         OP_FN(RenderNodeOp) \
+        OP_FN(ShadowOp) \
         OP_FN(SimpleRectsOp) \
         OP_FN(BeginLayerOp) \
         OP_FN(EndLayerOp) \
@@ -109,6 +110,31 @@
             : SUPER(RectOp) {}
 };
 
+/**
+ * Real-time, dynamic-lit shadow.
+ *
+ * Uses invalid/empty bounds and matrix since ShadowOp bounds aren't known at defer time,
+ * and are resolved dynamically, and transform isn't needed.
+ *
+ * State construction handles these properties specially.
+ */
+struct ShadowOp : RecordedOp {
+    ShadowOp(const RenderNodeOp& casterOp, float casterAlpha, const SkPath* casterPath, const Rect& clipRect)
+            : RecordedOp(RecordedOpId::ShadowOp, Rect(), Matrix4::identity(), clipRect, nullptr)
+            , shadowMatrixXY(casterOp.localMatrix)
+            , shadowMatrixZ(casterOp.localMatrix)
+            , casterAlpha(casterAlpha)
+            , casterPath(casterPath) {
+        const RenderNode& node = *casterOp.renderNode;
+        node.applyViewPropertyTransforms(shadowMatrixXY, false);
+        node.applyViewPropertyTransforms(shadowMatrixZ, true);
+    };
+    Matrix4 shadowMatrixXY;
+    Matrix4 shadowMatrixZ;
+    const float casterAlpha;
+    const SkPath* casterPath;
+};
+
 struct SimpleRectsOp : RecordedOp { // Filled, no AA (TODO: better name?)
     SimpleRectsOp(BASE_PARAMS, Vertex* vertices, size_t vertexCount)
             : SUPER(SimpleRectsOp)
diff --git a/libs/hwui/tests/TreeContentAnimation.cpp b/libs/hwui/tests/TreeContentAnimation.cpp
index 29d9803..81bf9ed 100644
--- a/libs/hwui/tests/TreeContentAnimation.cpp
+++ b/libs/hwui/tests/TreeContentAnimation.cpp
@@ -408,7 +408,7 @@
 public:
     sp<RenderNode> card = TestUtils::createNode<TestCanvas>(0, 0, 200, 200, [] (TestCanvas& canvas) {
         canvas.drawColor(0xFF0000FF, SkXfermode::kSrcOver_Mode);
-    }, true);
+    }, TestUtils::getHwLayerSetupCallback());
     void createContent(int width, int height, TestCanvas* canvas) override {
         canvas->drawColor(0xFFFFFFFF, SkXfermode::kSrcOver_Mode); // background
         canvas->drawRenderNode(card.get());
diff --git a/libs/hwui/unit_tests/BakedOpStateTests.cpp b/libs/hwui/unit_tests/BakedOpStateTests.cpp
index bc1b69f..4e00fb3 100644
--- a/libs/hwui/unit_tests/BakedOpStateTests.cpp
+++ b/libs/hwui/unit_tests/BakedOpStateTests.cpp
@@ -60,24 +60,21 @@
 TEST(BakedOpState, constructAndReject) {
     LinearAllocator allocator;
 
-    Matrix4 identity;
-    identity.loadIdentity();
-
     Matrix4 translate100x0;
     translate100x0.loadTranslate(100, 0, 0);
 
     SkPaint paint;
     {
         RectOp rejectOp(Rect(30, 40, 100, 200), translate100x0, Rect(0, 0, 100, 200), &paint);
-        auto snapshot = TestUtils::makeSnapshot(identity, Rect(0, 0, 100, 200));
+        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(0, 0, 100, 200));
         BakedOpState* bakedOp = BakedOpState::tryConstruct(allocator, *snapshot, rejectOp);
 
         EXPECT_EQ(bakedOp, nullptr); // rejected by clip, so not constructed
         EXPECT_LE(allocator.usedSize(), 8u); // no significant allocation space used for rejected op
     }
     {
-        RectOp successOp(Rect(30, 40, 100, 200), identity, Rect(0, 0, 100, 200), &paint);
-        auto snapshot = TestUtils::makeSnapshot(identity, Rect(0, 0, 100, 200));
+        RectOp successOp(Rect(30, 40, 100, 200), Matrix4::identity(), Rect(0, 0, 100, 200), &paint);
+        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(0, 0, 100, 200));
         BakedOpState* bakedOp = BakedOpState::tryConstruct(allocator, *snapshot, successOp);
 
         EXPECT_NE(bakedOp, nullptr); // NOT rejected by clip, so will be constructed
@@ -85,5 +82,24 @@
     }
 }
 
+TEST(BakedOpState, oplessConstructAndReject) {
+    LinearAllocator allocator;
+    {
+        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(0, 0, 0, 0)); // empty
+        BakedOpState* bakedOp = BakedOpState::tryShadowOpConstruct(allocator, *snapshot, (ShadowOp*)0x1234);
+
+        EXPECT_EQ(bakedOp, nullptr); // rejected by clip, so not constructed
+        EXPECT_LE(allocator.usedSize(), 8u); // no significant allocation space used for rejected op
+    }
+    {
+        auto snapshot = TestUtils::makeSnapshot(Matrix4::identity(), Rect(0, 0, 100, 200));
+        BakedOpState* bakedOp = BakedOpState::tryShadowOpConstruct(allocator, *snapshot, (ShadowOp*)0x1234);
+
+        EXPECT_NE(bakedOp, nullptr); // NOT rejected by clip, so will be constructed
+        EXPECT_GT(allocator.usedSize(), 64u); // relatively large alloc for non-rejected op
+        EXPECT_EQ((ShadowOp*)0x1234, bakedOp->op);
+    }
+}
+
 }
 }
diff --git a/libs/hwui/unit_tests/OpReordererTests.cpp b/libs/hwui/unit_tests/OpReordererTests.cpp
index f67c24a..07080a2 100644
--- a/libs/hwui/unit_tests/OpReordererTests.cpp
+++ b/libs/hwui/unit_tests/OpReordererTests.cpp
@@ -38,17 +38,17 @@
  * and allows Renderer vs Dispatching behavior to be merged.
  *
  * onXXXOp methods fail by default - tests should override ops they expect
- * startLayer fails by default - tests should override if expected
+ * startRepaintLayer fails by default - tests should override if expected
  * startFrame/endFrame do nothing by default - tests should override to intercept
  */
 class TestRendererBase {
 public:
     virtual ~TestRendererBase() {}
-    virtual OffscreenBuffer* createLayer(uint32_t, uint32_t) {
+    virtual OffscreenBuffer* startTemporaryLayer(uint32_t, uint32_t) {
         ADD_FAILURE() << "Layer creation not expected in this test";
         return nullptr;
     }
-    virtual void startLayer(OffscreenBuffer*) {
+    virtual void startRepaintLayer(OffscreenBuffer*) {
         ADD_FAILURE() << "Layer repaint not expected in this test";
     }
     virtual void endLayer() {
@@ -82,27 +82,27 @@
     MAP_OPS(DISPATCHER_METHOD);
 };
 
-
 class FailRenderer : public TestRendererBase {};
 
-class SimpleTestRenderer : public TestRendererBase {
-public:
-    void startFrame(uint32_t width, uint32_t height) override {
-        EXPECT_EQ(0, mIndex++);
-        EXPECT_EQ(100u, width);
-        EXPECT_EQ(200u, height);
-    }
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(1, mIndex++);
-    }
-    void onBitmapOp(const BitmapOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(2, mIndex++);
-    }
-    void endFrame() override {
-        EXPECT_EQ(3, mIndex++);
-    }
-};
 TEST(OpReorderer, simple) {
+    class SimpleTestRenderer : public TestRendererBase {
+    public:
+        void startFrame(uint32_t width, uint32_t height) override {
+            EXPECT_EQ(0, mIndex++);
+            EXPECT_EQ(100u, width);
+            EXPECT_EQ(200u, height);
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(1, mIndex++);
+        }
+        void onBitmapOp(const BitmapOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(2, mIndex++);
+        }
+        void endFrame() override {
+            EXPECT_EQ(3, mIndex++);
+        }
+    };
+
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(100, 200, [](RecordingCanvas& canvas) {
         SkBitmap bitmap = TestUtils::createSkBitmap(25, 25);
         canvas.drawRect(0, 0, 100, 200, SkPaint());
@@ -115,7 +115,6 @@
     EXPECT_EQ(4, renderer.getIndex()); // 2 ops + start + end
 }
 
-
 TEST(OpReorderer, simpleRejection) {
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         canvas.save(SkCanvas::kMatrix_SaveFlag | SkCanvas::kClip_SaveFlag);
@@ -129,18 +128,18 @@
     reorderer.replayBakedOps<TestDispatcher>(renderer);
 }
 
-
-static int SIMPLE_BATCHING_LOOPS = 5;
-class SimpleBatchingTestRenderer : public TestRendererBase {
-public:
-    void onBitmapOp(const BitmapOp& op, const BakedOpState& state) override {
-        EXPECT_TRUE(mIndex++ >= SIMPLE_BATCHING_LOOPS);
-    }
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        EXPECT_TRUE(mIndex++ < SIMPLE_BATCHING_LOOPS);
-    }
-};
 TEST(OpReorderer, simpleBatching) {
+    static int SIMPLE_BATCHING_LOOPS = 5;
+    class SimpleBatchingTestRenderer : public TestRendererBase {
+    public:
+        void onBitmapOp(const BitmapOp& op, const BakedOpState& state) override {
+            EXPECT_TRUE(mIndex++ >= SIMPLE_BATCHING_LOOPS);
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            EXPECT_TRUE(mIndex++ < SIMPLE_BATCHING_LOOPS);
+        }
+    };
+
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         SkBitmap bitmap = TestUtils::createSkBitmap(10, 10);
 
@@ -162,24 +161,25 @@
     EXPECT_EQ(2 * SIMPLE_BATCHING_LOOPS, renderer.getIndex()); // 2 x loops ops, because no merging (TODO: force no merging)
 }
 
-class RenderNodeTestRenderer : public TestRendererBase {
-public:
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        switch(mIndex++) {
-        case 0:
-            EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clippedBounds);
-            EXPECT_EQ(SK_ColorDKGRAY, op.paint->getColor());
-            break;
-        case 1:
-            EXPECT_EQ(Rect(50, 50, 150, 150), state.computedState.clippedBounds);
-            EXPECT_EQ(SK_ColorWHITE, op.paint->getColor());
-            break;
-        default:
-            ADD_FAILURE();
-        }
-    }
-};
 TEST(OpReorderer, renderNode) {
+    class RenderNodeTestRenderer : public TestRendererBase {
+    public:
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            switch(mIndex++) {
+            case 0:
+                EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clippedBounds);
+                EXPECT_EQ(SK_ColorDKGRAY, op.paint->getColor());
+                break;
+            case 1:
+                EXPECT_EQ(Rect(50, 50, 150, 150), state.computedState.clippedBounds);
+                EXPECT_EQ(SK_ColorWHITE, op.paint->getColor());
+                break;
+            default:
+                ADD_FAILURE();
+            }
+        }
+    };
+
     sp<RenderNode> child = TestUtils::createNode<RecordingCanvas>(10, 10, 110, 110, [](RecordingCanvas& canvas) {
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);
@@ -210,16 +210,17 @@
     reorderer.replayBakedOps<TestDispatcher>(renderer);
 }
 
-class ClippedTestRenderer : public TestRendererBase {
-public:
-    void onBitmapOp(const BitmapOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(0, mIndex++);
-        EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clippedBounds);
-        EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clipRect);
-        EXPECT_TRUE(state.computedState.transform.isIdentity());
-    }
-};
 TEST(OpReorderer, clipped) {
+    class ClippedTestRenderer : public TestRendererBase {
+    public:
+        void onBitmapOp(const BitmapOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(0, mIndex++);
+            EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clippedBounds);
+            EXPECT_EQ(Rect(10, 20, 30, 40), state.computedState.clipRect);
+            EXPECT_TRUE(state.computedState.transform.isIdentity());
+        }
+    };
+
     sp<RenderNode> node = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200, [](RecordingCanvas& canvas) {
         SkBitmap bitmap = TestUtils::createSkBitmap(200, 200);
         canvas.drawBitmap(bitmap, 0, 0, nullptr);
@@ -236,36 +237,36 @@
     reorderer.replayBakedOps<TestDispatcher>(renderer);
 }
 
-
-class SaveLayerSimpleTestRenderer : public TestRendererBase {
-public:
-    OffscreenBuffer* createLayer(uint32_t width, uint32_t height) override {
-        EXPECT_EQ(0, mIndex++);
-        EXPECT_EQ(180u, width);
-        EXPECT_EQ(180u, height);
-        return nullptr;
-    }
-    void endLayer() override {
-        EXPECT_EQ(2, mIndex++);
-    }
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(1, mIndex++);
-        EXPECT_EQ(Rect(10, 10, 190, 190), op.unmappedBounds);
-        EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clippedBounds);
-        EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clipRect);
-
-        Matrix4 expectedTransform;
-        expectedTransform.loadTranslate(-10, -10, 0);
-        EXPECT_MATRIX_APPROX_EQ(expectedTransform, state.computedState.transform);
-    }
-    void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(3, mIndex++);
-        EXPECT_EQ(Rect(10, 10, 190, 190), state.computedState.clippedBounds);
-        EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clipRect);
-        EXPECT_TRUE(state.computedState.transform.isIdentity());
-    }
-};
 TEST(OpReorderer, saveLayerSimple) {
+    class SaveLayerSimpleTestRenderer : public TestRendererBase {
+    public:
+        OffscreenBuffer* startTemporaryLayer(uint32_t width, uint32_t height) override {
+            EXPECT_EQ(0, mIndex++);
+            EXPECT_EQ(180u, width);
+            EXPECT_EQ(180u, height);
+            return nullptr;
+        }
+        void endLayer() override {
+            EXPECT_EQ(2, mIndex++);
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(1, mIndex++);
+            EXPECT_EQ(Rect(10, 10, 190, 190), op.unmappedBounds);
+            EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clippedBounds);
+            EXPECT_EQ(Rect(0, 0, 180, 180), state.computedState.clipRect);
+
+            Matrix4 expectedTransform;
+            expectedTransform.loadTranslate(-10, -10, 0);
+            EXPECT_MATRIX_APPROX_EQ(expectedTransform, state.computedState.transform);
+        }
+        void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(3, mIndex++);
+            EXPECT_EQ(Rect(10, 10, 190, 190), state.computedState.clippedBounds);
+            EXPECT_EQ(Rect(0, 0, 200, 200), state.computedState.clipRect);
+            EXPECT_TRUE(state.computedState.transform.isIdentity());
+        }
+    };
+
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(200, 200, [](RecordingCanvas& canvas) {
         canvas.saveLayerAlpha(10, 10, 190, 190, 128, SkCanvas::kClipToLayer_SaveFlag);
         canvas.drawRect(10, 10, 190, 190, SkPaint());
@@ -279,57 +280,57 @@
     EXPECT_EQ(4, renderer.getIndex());
 }
 
-
-/* saveLayer1 {rect1, saveLayer2 { rect2 } } will play back as:
- * - createLayer2, rect2 endLayer2
- * - createLayer1, rect1, drawLayer2, endLayer1
- * - startFrame, layerOp1, endFrame
- */
-class SaveLayerNestedTestRenderer : public TestRendererBase {
-public:
-    OffscreenBuffer* createLayer(uint32_t width, uint32_t height) override {
-        const int index = mIndex++;
-        if (index == 0) {
-            EXPECT_EQ(400u, width);
-            EXPECT_EQ(400u, height);
-            return (OffscreenBuffer*) 0x400;
-        } else if (index == 3) {
-            EXPECT_EQ(800u, width);
-            EXPECT_EQ(800u, height);
-            return (OffscreenBuffer*) 0x800;
-        } else { ADD_FAILURE(); }
-        return (OffscreenBuffer*) nullptr;
-    }
-    void endLayer() override {
-        int index = mIndex++;
-        EXPECT_TRUE(index == 2 || index == 6);
-    }
-    void startFrame(uint32_t width, uint32_t height) override {
-        EXPECT_EQ(7, mIndex++);
-    }
-    void endFrame() override {
-        EXPECT_EQ(9, mIndex++);
-    }
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        const int index = mIndex++;
-        if (index == 1) {
-            EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner rect
-        } else if (index == 4) {
-            EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer rect
-        } else { ADD_FAILURE(); }
-    }
-    void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
-        const int index = mIndex++;
-        if (index == 5) {
-            EXPECT_EQ((OffscreenBuffer*)0x400, *op.layerHandle);
-            EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner layer
-        } else if (index == 8) {
-            EXPECT_EQ((OffscreenBuffer*)0x800, *op.layerHandle);
-            EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer layer
-        } else { ADD_FAILURE(); }
-    }
-};
 TEST(OpReorderer, saveLayerNested) {
+    /* saveLayer1 { rect1, saveLayer2 { rect2 } } will play back as:
+     * - startTemporaryLayer2, rect2 endLayer2
+     * - startTemporaryLayer1, rect1, drawLayer2, endLayer1
+     * - startFrame, layerOp1, endFrame
+     */
+    class SaveLayerNestedTestRenderer : public TestRendererBase {
+    public:
+        OffscreenBuffer* startTemporaryLayer(uint32_t width, uint32_t height) override {
+            const int index = mIndex++;
+            if (index == 0) {
+                EXPECT_EQ(400u, width);
+                EXPECT_EQ(400u, height);
+                return (OffscreenBuffer*) 0x400;
+            } else if (index == 3) {
+                EXPECT_EQ(800u, width);
+                EXPECT_EQ(800u, height);
+                return (OffscreenBuffer*) 0x800;
+            } else { ADD_FAILURE(); }
+            return (OffscreenBuffer*) nullptr;
+        }
+        void endLayer() override {
+            int index = mIndex++;
+            EXPECT_TRUE(index == 2 || index == 6);
+        }
+        void startFrame(uint32_t width, uint32_t height) override {
+            EXPECT_EQ(7, mIndex++);
+        }
+        void endFrame() override {
+            EXPECT_EQ(9, mIndex++);
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            const int index = mIndex++;
+            if (index == 1) {
+                EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner rect
+            } else if (index == 4) {
+                EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer rect
+            } else { ADD_FAILURE(); }
+        }
+        void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
+            const int index = mIndex++;
+            if (index == 5) {
+                EXPECT_EQ((OffscreenBuffer*)0x400, *op.layerHandle);
+                EXPECT_EQ(Rect(0, 0, 400, 400), op.unmappedBounds); // inner layer
+            } else if (index == 8) {
+                EXPECT_EQ((OffscreenBuffer*)0x800, *op.layerHandle);
+                EXPECT_EQ(Rect(0, 0, 800, 800), op.unmappedBounds); // outer layer
+            } else { ADD_FAILURE(); }
+        }
+    };
+
     auto dl = TestUtils::createDisplayList<RecordingCanvas>(800, 800, [](RecordingCanvas& canvas) {
         canvas.saveLayerAlpha(0, 0, 800, 800, 128, SkCanvas::kClipToLayer_SaveFlag);
         {
@@ -369,42 +370,41 @@
     reorderer.replayBakedOps<TestDispatcher>(renderer);
 }
 
-class HwLayerSimpleTestRenderer : public TestRendererBase {
-public:
-    void startLayer(OffscreenBuffer* offscreenBuffer) override {
-        EXPECT_EQ(0, mIndex++);
-        EXPECT_EQ(offscreenBuffer, (OffscreenBuffer*) 0x0124);
-    }
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(1, mIndex++);
-
-        EXPECT_TRUE(state.computedState.transform.isIdentity())
-                << "Transform should be reset within layer";
-
-        EXPECT_EQ(state.computedState.clipRect, Rect(25, 25, 75, 75))
-                << "Damage rect should be used to clip layer content";
-    }
-    void endLayer() override {
-        EXPECT_EQ(2, mIndex++);
-    }
-    void startFrame(uint32_t width, uint32_t height) override {
-        EXPECT_EQ(3, mIndex++);
-    }
-    void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(4, mIndex++);
-    }
-    void endFrame() override {
-        EXPECT_EQ(5, mIndex++);
-    }
-};
 TEST(OpReorderer, hwLayerSimple) {
+    class HwLayerSimpleTestRenderer : public TestRendererBase {
+    public:
+        void startRepaintLayer(OffscreenBuffer* offscreenBuffer) override {
+            EXPECT_EQ(0, mIndex++);
+            EXPECT_EQ(offscreenBuffer, (OffscreenBuffer*) 0x0124);
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(1, mIndex++);
+
+            EXPECT_TRUE(state.computedState.transform.isIdentity())
+                    << "Transform should be reset within layer";
+
+            EXPECT_EQ(state.computedState.clipRect, Rect(25, 25, 75, 75))
+                    << "Damage rect should be used to clip layer content";
+        }
+        void endLayer() override {
+            EXPECT_EQ(2, mIndex++);
+        }
+        void startFrame(uint32_t width, uint32_t height) override {
+            EXPECT_EQ(3, mIndex++);
+        }
+        void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(4, mIndex++);
+        }
+        void endFrame() override {
+            EXPECT_EQ(5, mIndex++);
+        }
+    };
+
     sp<RenderNode> node = TestUtils::createNode<RecordingCanvas>(10, 10, 110, 110, [](RecordingCanvas& canvas) {
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);
         canvas.drawRect(0, 0, 100, 100, paint);
-    });
-    node->mutateStagingProperties().mutateLayerProperties().setType(LayerType::RenderLayer);
-    node->setPropertyFieldsDirty(RenderNode::GENERIC);
+    }, TestUtils::getHwLayerSetupCallback());
     OffscreenBuffer** bufferHandle = node->getLayerHandle();
     *bufferHandle = (OffscreenBuffer*) 0x0124;
 
@@ -427,69 +427,67 @@
     *bufferHandle = nullptr;
 }
 
-
-/* parentLayer { greyRect, saveLayer { childLayer { whiteRect } } } will play back as:
- * - startLayer(child), rect(grey), endLayer
- * - createLayer, drawLayer(child), endLayer
- * - startLayer(parent), rect(white), drawLayer(saveLayer), endLayer
- * - startFrame, drawLayer(parent), endLayerb
- */
-class HwLayerComplexTestRenderer : public TestRendererBase {
-public:
-    OffscreenBuffer* createLayer(uint32_t width, uint32_t height) {
-        EXPECT_EQ(3, mIndex++); // savelayer first
-        return (OffscreenBuffer*)0xabcd;
-    }
-    void startLayer(OffscreenBuffer* offscreenBuffer) override {
-        int index = mIndex++;
-        if (index == 0) {
-            // starting inner layer
-            EXPECT_EQ((OffscreenBuffer*)0x4567, offscreenBuffer);
-        } else if (index == 6) {
-            // starting outer layer
-            EXPECT_EQ((OffscreenBuffer*)0x0123, offscreenBuffer);
-        } else { ADD_FAILURE(); }
-    }
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        int index = mIndex++;
-        if (index == 1) {
-            // inner layer's rect (white)
-            EXPECT_EQ(SK_ColorWHITE, op.paint->getColor());
-        } else if (index == 7) {
-            // outer layer's rect (grey)
-            EXPECT_EQ(SK_ColorDKGRAY, op.paint->getColor());
-        } else { ADD_FAILURE(); }
-    }
-    void endLayer() override {
-        int index = mIndex++;
-        EXPECT_TRUE(index == 2 || index == 5 || index == 9);
-    }
-    void startFrame(uint32_t width, uint32_t height) override {
-        EXPECT_EQ(10, mIndex++);
-    }
-    void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
-        int index = mIndex++;
-        if (index == 4) {
-            EXPECT_EQ((OffscreenBuffer*)0x4567, *op.layerHandle);
-        } else if (index == 8) {
-            EXPECT_EQ((OffscreenBuffer*)0xabcd, *op.layerHandle);
-        } else if (index == 11) {
-            EXPECT_EQ((OffscreenBuffer*)0x0123, *op.layerHandle);
-        } else { ADD_FAILURE(); }
-    }
-    void endFrame() override {
-        EXPECT_EQ(12, mIndex++);
-    }
-};
 TEST(OpReorderer, hwLayerComplex) {
+    /* parentLayer { greyRect, saveLayer { childLayer { whiteRect } } } will play back as:
+     * - startRepaintLayer(child), rect(grey), endLayer
+     * - startTemporaryLayer, drawLayer(child), endLayer
+     * - startRepaintLayer(parent), rect(white), drawLayer(saveLayer), endLayer
+     * - startFrame, drawLayer(parent), endLayerb
+     */
+    class HwLayerComplexTestRenderer : public TestRendererBase {
+    public:
+        OffscreenBuffer* startTemporaryLayer(uint32_t width, uint32_t height) {
+            EXPECT_EQ(3, mIndex++); // savelayer first
+            return (OffscreenBuffer*)0xabcd;
+        }
+        void startRepaintLayer(OffscreenBuffer* offscreenBuffer) override {
+            int index = mIndex++;
+            if (index == 0) {
+                // starting inner layer
+                EXPECT_EQ((OffscreenBuffer*)0x4567, offscreenBuffer);
+            } else if (index == 6) {
+                // starting outer layer
+                EXPECT_EQ((OffscreenBuffer*)0x0123, offscreenBuffer);
+            } else { ADD_FAILURE(); }
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            int index = mIndex++;
+            if (index == 1) {
+                // inner layer's rect (white)
+                EXPECT_EQ(SK_ColorWHITE, op.paint->getColor());
+            } else if (index == 7) {
+                // outer layer's rect (grey)
+                EXPECT_EQ(SK_ColorDKGRAY, op.paint->getColor());
+            } else { ADD_FAILURE(); }
+        }
+        void endLayer() override {
+            int index = mIndex++;
+            EXPECT_TRUE(index == 2 || index == 5 || index == 9);
+        }
+        void startFrame(uint32_t width, uint32_t height) override {
+            EXPECT_EQ(10, mIndex++);
+        }
+        void onLayerOp(const LayerOp& op, const BakedOpState& state) override {
+            int index = mIndex++;
+            if (index == 4) {
+                EXPECT_EQ((OffscreenBuffer*)0x4567, *op.layerHandle);
+            } else if (index == 8) {
+                EXPECT_EQ((OffscreenBuffer*)0xabcd, *op.layerHandle);
+            } else if (index == 11) {
+                EXPECT_EQ((OffscreenBuffer*)0x0123, *op.layerHandle);
+            } else { ADD_FAILURE(); }
+        }
+        void endFrame() override {
+            EXPECT_EQ(12, mIndex++);
+        }
+    };
+
     auto child = TestUtils::createNode<RecordingCanvas>(50, 50, 150, 150,
             [](RecordingCanvas& canvas) {
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);
         canvas.drawRect(0, 0, 100, 100, paint);
-    });
-    child->mutateStagingProperties().mutateLayerProperties().setType(LayerType::RenderLayer);
-    child->setPropertyFieldsDirty(RenderNode::GENERIC);
+    }, TestUtils::getHwLayerSetupCallback());
     *(child->getLayerHandle()) = (OffscreenBuffer*) 0x4567;
 
     RenderNode* childPtr = child.get();
@@ -502,9 +500,7 @@
         canvas.saveLayerAlpha(50, 50, 150, 150, 128, SkCanvas::kClipToLayer_SaveFlag);
         canvas.drawRenderNode(childPtr);
         canvas.restore();
-    });
-    parent->mutateStagingProperties().mutateLayerProperties().setType(LayerType::RenderLayer);
-    parent->setPropertyFieldsDirty(RenderNode::GENERIC);
+    }, TestUtils::getHwLayerSetupCallback());
     *(parent->getLayerHandle()) = (OffscreenBuffer*) 0x0123;
 
     TestUtils::syncHierarchyPropertiesAndDisplayList(parent);
@@ -527,14 +523,6 @@
     *(parent->getLayerHandle()) = nullptr;
 }
 
-
-class ZReorderTestRenderer : public TestRendererBase {
-public:
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        int expectedOrder = SkColorGetB(op.paint->getColor()); // extract order from blue channel
-        EXPECT_EQ(expectedOrder, mIndex++) << "An op was drawn out of order";
-    }
-};
 static void drawOrderedRect(RecordingCanvas* canvas, uint8_t expectedDrawOrder) {
     SkPaint paint;
     paint.setColor(SkColorSetARGB(256, 0, 0, expectedDrawOrder)); // order put in blue channel
@@ -550,6 +538,14 @@
     canvas->drawRenderNode(node.get()); // canvas takes reference/sole ownership
 }
 TEST(OpReorderer, zReorder) {
+    class ZReorderTestRenderer : public TestRendererBase {
+    public:
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            int expectedOrder = SkColorGetB(op.paint->getColor()); // extract order from blue channel
+            EXPECT_EQ(expectedOrder, mIndex++) << "An op was drawn out of order";
+        }
+    };
+
     auto parent = TestUtils::createNode<RecordingCanvas>(0, 0, 100, 100,
             [](RecordingCanvas& canvas) {
         drawOrderedNode(&canvas, 0, 10.0f); // in reorder=false at this point, so played inorder
@@ -576,27 +572,64 @@
     EXPECT_EQ(10, renderer.getIndex());
 };
 
+TEST(OpReorderer, shadow) {
+    class ShadowTestRenderer : public TestRendererBase {
+    public:
+        void onShadowOp(const ShadowOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(0, mIndex++);
+        }
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(1, mIndex++);
+        }
+    };
 
-class PropertyTestRenderer : public TestRendererBase {
-public:
-    PropertyTestRenderer(std::function<void(const RectOp&, const BakedOpState&)> callback)
-            : mCallback(callback) {}
-    void onRectOp(const RectOp& op, const BakedOpState& state) override {
-        EXPECT_EQ(mIndex++, 0);
-        mCallback(op, state);
-    }
-    std::function<void(const RectOp&, const BakedOpState&)> mCallback;
-};
+    sp<RenderNode> caster = TestUtils::createNode<RecordingCanvas>(0, 0, 100, 100,
+            [](RecordingCanvas& canvas) {
+        SkPaint paint;
+        paint.setColor(SK_ColorWHITE);
+        canvas.drawRect(0, 0, 100, 100, paint);
+    }, [] (RenderProperties& properties) {
+        properties.setTranslationZ(5.0f);
+        properties.mutableOutline().setRoundRect(0, 0, 100, 100, 5, 1.0f);
+        return RenderNode::GENERIC | RenderNode::TRANSLATION_Z;
+    });
+    sp<RenderNode> parent = TestUtils::createNode<RecordingCanvas>(0, 0, 200, 200,
+            [&caster] (RecordingCanvas& canvas) {
+        canvas.insertReorderBarrier(true);
+        canvas.drawRenderNode(caster.get());
+    });
+
+    TestUtils::syncHierarchyPropertiesAndDisplayList(parent);
+
+    std::vector< sp<RenderNode> > nodes;
+    nodes.push_back(parent.get());
+
+    OpReorderer reorderer(sEmptyLayerUpdateQueue, SkRect::MakeWH(200, 200), 200, 200, nodes);
+
+    ShadowTestRenderer renderer;
+    reorderer.replayBakedOps<TestDispatcher>(renderer);
+    EXPECT_EQ(2, renderer.getIndex());
+}
 
 static void testProperty(
-        std::function<int(RenderProperties&)> propSetupCallback,
+        TestUtils::PropSetupCallback propSetupCallback,
         std::function<void(const RectOp&, const BakedOpState&)> opValidateCallback) {
+    class PropertyTestRenderer : public TestRendererBase {
+    public:
+        PropertyTestRenderer(std::function<void(const RectOp&, const BakedOpState&)> callback)
+                : mCallback(callback) {}
+        void onRectOp(const RectOp& op, const BakedOpState& state) override {
+            EXPECT_EQ(mIndex++, 0);
+            mCallback(op, state);
+        }
+        std::function<void(const RectOp&, const BakedOpState&)> mCallback;
+    };
+
     auto node = TestUtils::createNode<RecordingCanvas>(0, 0, 100, 100, [](RecordingCanvas& canvas) {
         SkPaint paint;
         paint.setColor(SK_ColorWHITE);
         canvas.drawRect(0, 0, 100, 100, paint);
-    });
-    node->setPropertyFieldsDirty(propSetupCallback(node->mutateStagingProperties()));
+    }, propSetupCallback);
     TestUtils::syncHierarchyPropertiesAndDisplayList(node);
 
     std::vector< sp<RenderNode> > nodes;
diff --git a/libs/hwui/unit_tests/TestUtils.h b/libs/hwui/unit_tests/TestUtils.h
index 28e0fd8..23e5398 100644
--- a/libs/hwui/unit_tests/TestUtils.h
+++ b/libs/hwui/unit_tests/TestUtils.h
@@ -97,7 +97,18 @@
         return std::unique_ptr<DisplayList>(canvas.finishRecording());
     }
 
-    static sp<RenderNode> createNode(int left, int top, int right, int bottom, bool onLayer = false) {
+    typedef std::function<int(RenderProperties&)> PropSetupCallback;
+
+    static PropSetupCallback getHwLayerSetupCallback() {
+        static PropSetupCallback sLayerSetupCallback = [] (RenderProperties& properties) {
+            properties.mutateLayerProperties().setType(LayerType::RenderLayer);
+            return RenderNode::GENERIC;
+        };
+        return sLayerSetupCallback;
+    }
+
+    static sp<RenderNode> createNode(int left, int top, int right, int bottom,
+            PropSetupCallback propSetupCallback = nullptr) {
         // if RenderNodes are being sync'd/used, device info will be needed, since
         // DeviceInfo::maxTextureSize() affects layer property
         DeviceInfo::initialize();
@@ -105,17 +116,17 @@
         sp<RenderNode> node = new RenderNode();
         node->mutateStagingProperties().setLeftTopRightBottom(left, top, right, bottom);
         node->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);
-        if (onLayer) {
-            node->mutateStagingProperties().mutateLayerProperties().setType(LayerType::RenderLayer);
-            node->setPropertyFieldsDirty(RenderNode::GENERIC);
+        if (propSetupCallback) {
+            node->setPropertyFieldsDirty(propSetupCallback(node->mutateStagingProperties()));
         }
         return node;
     }
 
     template<class CanvasType>
     static sp<RenderNode> createNode(int left, int top, int right, int bottom,
-            std::function<void(CanvasType& canvas)> canvasCallback, bool onLayer = false) {
-        sp<RenderNode> node = createNode(left, top, right, bottom, onLayer);
+            std::function<void(CanvasType& canvas)> canvasCallback,
+            PropSetupCallback propSetupCallback = nullptr) {
+        sp<RenderNode> node = createNode(left, top, right, bottom, propSetupCallback);
 
         auto&& props = node->stagingProperties(); // staging, since not sync'd yet
         CanvasType canvas(props.getWidth(), props.getHeight());