Aura: Browser-side changes for Composite-To-Mailbox

cc/gl_renderer.h

Index: cc/gl_renderer.h
diff --git a/cc/gl_renderer.h b/cc/gl_renderer.h
index 2e119334a12490aee423143d2878ca8df04a2f14..180b5acebf4c76c05f77039e29a141ec514f5ede 100644
--- a/cc/gl_renderer.h
+++ b/cc/gl_renderer.h
@@ -5,6 +5,9 @@
 #ifndef CC_GL_RENDERER_H_
 #define CC_GL_RENDERER_H_
 
+#include <queue>
+#include <vector>
+
 #include "cc/cc_export.h"
 #include "cc/checkerboard_draw_quad.h"
 #include "cc/debug_border_draw_quad.h"
@@ -45,6 +48,8 @@ public:
 
     virtual void viewportChanged() OVERRIDE;
 
+    virtual void receiveCompositorFrameAck(const CompositorFrameAck&) OVERRIDE;
+
     // waits for rendering to finish
     virtual void finish() OVERRIDE;
 
@@ -226,9 +231,30 @@ private:
     bool m_visible;
     bool m_isScissorEnabled;
     bool m_blendShadow;
+    bool m_renderToMailbox;
     unsigned m_programShadow;
     TexturedQuadDrawCache m_drawCache;
 
+    struct MailboxTexture

[danakj, 2013/01/18 01:01:41]

considering that we're going to have a TextureMailbox class in cc/ soon
(https://codereview.chromium.org/11888010/) I think using a different or more
verbose name here would be super nice.

TransferableFrame?

[no sievers, 2013/02/06 23:36:00]

Done.

+    {
+        MailboxTexture()
+            : textureId(0) {}
+
+        MailboxTexture(uint32 textureId,
+                       const Mailbox& mailbox,
+                       const gfx::Size& size)
+            : textureId(textureId),
+              mailbox(mailbox),
+              size(size) {}
+
+        uint32 textureId;
+        Mailbox mailbox;
+        gfx::Size size;
+    };
+    MailboxTexture m_currentBacking;
+    std::vector<MailboxTexture> m_pendingFrames;
+    std::queue<MailboxTexture> m_returnedTextures;
+
     scoped_ptr<ResourceProvider::ScopedWriteLockGL> m_currentFramebufferLock;
 
     DISALLOW_COPY_AND_ASSIGN(GLRenderer);