Add debug mode to measure performance.

Change-Id: I9d4c84034dc200b99c8266165942a7cdbcb5c0c5
diff --git a/libs/hwui/OpenGLDebugRenderer.h b/libs/hwui/OpenGLDebugRenderer.h
new file mode 100644
index 0000000..37fac93
--- /dev/null
+++ b/libs/hwui/OpenGLDebugRenderer.h
@@ -0,0 +1,68 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_UI_OPENGL_DEBUG_RENDERER_H
+#define ANDROID_UI_OPENGL_DEBUG_RENDERER_H
+
+#include "OpenGLRenderer.h"
+
+namespace android {
+namespace uirenderer {
+
+///////////////////////////////////////////////////////////////////////////////
+// Renderer
+///////////////////////////////////////////////////////////////////////////////
+
+class OpenGLDebugRenderer: public OpenGLRenderer {
+public:
+    OpenGLDebugRenderer(): mPrimitivesCount(0) {
+    }
+
+    ~OpenGLDebugRenderer() {
+    }
+
+    void prepare();
+    void finish();
+
+    int saveLayer(float left, float top, float right, float bottom,
+            const SkPaint* p, int flags);
+
+    void drawBitmap(SkBitmap* bitmap, float left, float top, const SkPaint* paint);
+    void drawBitmap(SkBitmap* bitmap, const SkMatrix* matrix, const SkPaint* paint);
+    void drawBitmap(SkBitmap* bitmap, float srcLeft, float srcTop,
+            float srcRight, float srcBottom, float dstLeft, float dstTop,
+            float dstRight, float dstBottom, const SkPaint* paint);
+    void drawPatch(SkBitmap* bitmap, Res_png_9patch* patch, float left, float top,
+            float right, float bottom, const SkPaint* paint);
+    void drawColor(int color, SkXfermode::Mode mode);
+    void drawRect(float left, float top, float right, float bottom, const SkPaint* paint);
+    void drawPath(SkPath* path, SkPaint* paint);
+    void drawLines(float* points, int count, const SkPaint* paint);
+    void drawText(const char* text, int bytesCount, int count, float x, float y,
+            SkPaint* paint);
+
+protected:
+    void composeLayer(sp<Snapshot> current, sp<Snapshot> previous);
+
+private:
+    uint32_t mPrimitivesCount;
+
+}; // class OpenGLDebugRenderer
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_UI_OPENGL_DEBUG_RENDERER_H