Revert "Revert "fix [2793164] Spam 2x/second with TOT master in SurfaceFlinger""
This reverts commit 330dd304a471d260a73e342a240921c03c825f99.
diff --git a/libs/surfaceflinger/GLExtensions.cpp b/libs/surfaceflinger/GLExtensions.cpp
new file mode 100644
index 0000000..7f4f9fc
--- /dev/null
+++ b/libs/surfaceflinger/GLExtensions.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2010 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 <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include "GLExtensions.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+ANDROID_SINGLETON_STATIC_INSTANCE( GLExtensions )
+
+GLExtensions::GLExtensions()
+ : mHaveTextureExternal(false),
+ mHaveNpot(false),
+ mHaveDirectTexture(false)
+{
+}
+
+void GLExtensions::initWithGLStrings(
+ GLubyte const* vendor,
+ GLubyte const* renderer,
+ GLubyte const* version,
+ GLubyte const* extensions,
+ char const* egl_vendor,
+ char const* egl_version,
+ char const* egl_extensions)
+{
+ mVendor = (char const*)vendor;
+ mRenderer = (char const*)renderer;
+ mVersion = (char const*)version;
+ mExtensions = (char const*)extensions;
+ mEglVendor = egl_vendor;
+ mEglVersion = egl_version;
+ mEglExtensions = egl_extensions;
+
+ char const* curr = (char const*)extensions;
+ char const* head = curr;
+ do {
+ head = strchr(curr, ' ');
+ String8 s(curr, head ? head-curr : strlen(curr));
+ if (s.length()) {
+ mExtensionList.add(s);
+ }
+ curr = head+1;
+ } while (head);
+
+ curr = egl_extensions;
+ head = curr;
+ do {
+ head = strchr(curr, ' ');
+ String8 s(curr, head ? head-curr : strlen(curr));
+ if (s.length()) {
+ mExtensionList.add(s);
+ }
+ curr = head+1;
+ } while (head);
+
+#ifdef EGL_ANDROID_image_native_buffer
+ if (hasExtension("GL_OES_EGL_image") &&
+ (hasExtension("EGL_KHR_image_base") || hasExtension("EGL_KHR_image")) &&
+ hasExtension("EGL_ANDROID_image_native_buffer"))
+ {
+ mHaveDirectTexture = true;
+ }
+#else
+#warning "EGL_ANDROID_image_native_buffer not supported"
+#endif
+
+ if (hasExtension("GL_ARB_texture_non_power_of_two")) {
+ mHaveNpot = true;
+ }
+
+ if (hasExtension("GL_OES_texture_external")) {
+ mHaveTextureExternal = true;
+ } else if (strstr(mRenderer.string(), "Adreno")) {
+ // hack for Adreno 200
+ mHaveTextureExternal = true;
+ }
+}
+
+bool GLExtensions::hasExtension(char const* extension) const
+{
+ const String8 s(extension);
+ return mExtensionList.indexOf(s) >= 0;
+}
+
+char const* GLExtensions::getVendor() const {
+ return mVendor.string();
+}
+
+char const* GLExtensions::getRenderer() const {
+ return mRenderer.string();
+}
+
+char const* GLExtensions::getVersion() const {
+ return mVersion.string();
+}
+
+char const* GLExtensions::getExtension() const {
+ return mExtensions.string();
+}
+
+char const* GLExtensions::getEglVendor() const {
+ return mEglVendor.string();
+}
+
+char const* GLExtensions::getEglVersion() const {
+ return mEglVersion.string();
+}
+
+char const* GLExtensions::getEglExtension() const {
+ return mEglExtensions.string();
+}
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android