Support swap damage rect using eglSwapBuffersWithDamageKHR

ui/gl/gl_surface.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GL_GL_SURFACE_H_
 #define UI_GL_GL_SURFACE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 67 matching lines @@
   // Swaps front and back buffers. This has no effect for off-screen
   // contexts.
   virtual gfx::SwapResult SwapBuffers() = 0;
 
   // Get the size of the surface.
   virtual gfx::Size GetSize() = 0;
 
   // Get the underlying platform specific surface "handle".
   virtual void* GetHandle() = 0;
 
+  // Returns whether or not the surface supports SwapBuffersWithDamage
+  virtual bool SupportsSwapBuffersWithDamage();
+
   // Returns whether or not the surface supports PostSubBuffer.
   virtual bool SupportsPostSubBuffer();
 
   // Returns whether or not the surface supports CommitOverlayPlanes.
   virtual bool SupportsCommitOverlayPlanes();
 
   // Returns whether SwapBuffersAsync() is supported.
   virtual bool SupportsAsyncSwap();
 
   // Returns the internal frame buffer object name if the surface is backed by
   // FBO. Otherwise returns 0.
   virtual unsigned int GetBackingFramebufferObject();
 
   typedef base::Callback<void(gfx::SwapResult)> SwapCompletionCallback;
   // Swaps front and back buffers. This has no effect for off-screen
   // contexts. On some platforms, we want to send SwapBufferAck only after the
   // surface is displayed on screen. The callback can be used to delay sending
   // SwapBufferAck till that data is available. The callback should be run on
   // the calling thread (i.e. same thread SwapBuffersAsync is called)
   virtual void SwapBuffersAsync(const SwapCompletionCallback& callback);
 
+  // Swap buffers with damage rect.
+  virtual gfx::SwapResult SwapBuffersWithDamage(int x,
+                                                int y,
+                                                int width,
+                                                int height);
+
   // Copy part of the backbuffer to the frontbuffer.
   virtual gfx::SwapResult PostSubBuffer(int x, int y, int width, int height);
 
   // Copy part of the backbuffer to the frontbuffer. On some platforms, we want
   // to send SwapBufferAck only after the surface is displayed on screen. The
   // callback can be used to delay sending SwapBufferAck till that data is
   // available. The callback should be run on the calling thread (i.e. same
   // thread PostSubBufferAsync is called)
   virtual void PostSubBufferAsync(int x,
                                   int y,
@@ skipping 158 matching lines @@
 
 // Wraps GLSurface in scoped_refptr and tries to initializes it. Returns a
 // scoped_refptr containing the initialized GLSurface or nullptr if
 // initialization fails.
 GL_EXPORT scoped_refptr<GLSurface> InitializeGLSurface(
     scoped_refptr<GLSurface> surface);
 
 }  // namespace gl
 
 #endif  // UI_GL_GL_SURFACE_H_