Add a RenderBuffer object to store stencil buffers.

Bug #7146141

This change is needed to add a render buffer cache to avoid
creating and destroying stencil buffers on every frame.

This change also allows the renderer to use a 1 bit or 4 bit
stencil buffer whenever possible.

Finally this change fixes a bug introduced by a previous CL
which causes the stencil buffer to not be updated in certain
conditions. The fix relies on a new optional parameter in
drawColorRects() that can be used to avoid performing a
quickReject on rectangles generated by the clip region.

Change-Id: I2f55a8e807009887b276a83cde9f53fd5c01199f

1 files changed, 4 insertions, 1 deletions

diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
index 750b3d245bce..81af7b7b888b 100644
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -566,9 +566,11 @@ private:
      * @param mode The Skia xfermode to use
      * @param ignoreTransform True if the current transform should be ignored
      * @param dirty True if calling this method should dirty the current layer
+     * @param clip True if the rects should be clipped, false otherwise
      */
     status_t drawColorRects(const float* rects, int count, int color,
-            SkXfermode::Mode mode, bool ignoreTransform = false, bool dirty = true);
+            SkXfermode::Mode mode, bool ignoreTransform = false,
+            bool dirty = true, bool clip = true);
 
     /**
      * Draws the shape represented by the specified path texture.
@@ -881,6 +883,7 @@ private:
 
     // Various caches
     Caches& mCaches;
+    Extensions& mExtensions;
 
     // List of rectangles to clear after saveLayer() is invoked
     Vector<Rect*> mLayers;