Subrect snapshot support.

content/common/gpu/client/gl_helper.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 CONTENT_COMMON_GPU_CLIENT_GL_HELPER_H_
 #define CONTENT_COMMON_GPU_CLIENT_GL_HELPER_H_
 
 #include "base/atomicops.h"
 #include "base/basictypes.h"
 #include "base/callback.h"
@@ skipping 43 matching lines @@
                            unsigned char* out);
 
   // Creates a copy of the specified texture. |size| is the size of the texture.
   WebKit::WebGLId CopyTexture(WebKit::WebGLId texture,
                               const gfx::Size& size);
 
   // Creates a scaled copy of the specified texture. |src_size| is the size of
   // the texture and |dst_size| is the size of the resulting copy.
   WebKit::WebGLId CopyAndScaleTexture(WebKit::WebGLId texture,
                                       const gfx::Size& src_size,
+                                      const gfx::Rect& src_rect,
                                       const gfx::Size& dst_size,
                                       bool vertically_flip_texture);
 
   // Returns the shader compiled from the source.
   WebKit::WebGLId CompileShaderFromSource(const WebKit::WGC3Dchar* source,
                                           WebKit::WGC3Denum type);
 
   // Copies all pixels from |previous_texture| into |texture| that are
   // inside the region covered by |old_damage| but not part of |new_damage|.
   void CopySubBufferDamage(WebKit::WebGLId texture,
@@ skipping 12 matching lines @@
 
   // The number of all GLHelper instances.
   static base::subtle::Atomic32 count_;
 
   DISALLOW_COPY_AND_ASSIGN(GLHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_GL_HELPER_H_