gpu: Refactor to support cross-channel shared textures

gpu/command_buffer/service/context_state.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.
 
 // This file contains the ContextState class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_
 
 #include <vector>
@@ skipping 18 matching lines @@
 
 // State associated with each texture unit.
 struct GPU_EXPORT TextureUnit {
   TextureUnit();
   ~TextureUnit();
 
   // The last target that was bound to this texture unit.
   GLenum bind_target;
 
   // texture currently bound to this unit's GL_TEXTURE_2D with glBindTexture
-  scoped_refptr<Texture> bound_texture_2d;
+  scoped_refptr<TextureRef> bound_texture_2d;
 
   // texture currently bound to this unit's GL_TEXTURE_CUBE_MAP with
   // glBindTexture
-  scoped_refptr<Texture> bound_texture_cube_map;
+  scoped_refptr<TextureRef> bound_texture_cube_map;
 
   // texture currently bound to this unit's GL_TEXTURE_EXTERNAL_OES with
   // glBindTexture
-  scoped_refptr<Texture> bound_texture_external_oes;
+  scoped_refptr<TextureRef> bound_texture_external_oes;
 
   // texture currently bound to this unit's GL_TEXTURE_RECTANGLE_ARB with
   // glBindTexture
-  scoped_refptr<Texture> bound_texture_rectangle_arb;
+  scoped_refptr<TextureRef> bound_texture_rectangle_arb;
 
-  scoped_refptr<Texture> GetInfoForSamplerType(
+  scoped_refptr<TextureRef> GetInfoForSamplerType(
       GLenum type) {
     DCHECK(type == GL_SAMPLER_2D || type == GL_SAMPLER_CUBE ||
            type == GL_SAMPLER_EXTERNAL_OES || type == GL_SAMPLER_2D_RECT_ARB);
     switch (type) {
       case GL_SAMPLER_2D:
         return bound_texture_2d;
       case GL_SAMPLER_CUBE:
         return bound_texture_cube_map;
       case GL_SAMPLER_EXTERNAL_OES:
         return bound_texture_external_oes;
       case GL_SAMPLER_2D_RECT_ARB:
         return bound_texture_rectangle_arb;
     }
 
     NOTREACHED();
     return NULL;
   }
 
-  void Unbind(Texture* texture) {
+  void Unbind(TextureRef* texture) {
     if (bound_texture_2d == texture) {
       bound_texture_2d = NULL;
     }
     if (bound_texture_cube_map == texture) {
       bound_texture_cube_map = NULL;
     }
     if (bound_texture_external_oes == texture) {
       bound_texture_external_oes = NULL;
     }
   }
@@ skipping 87 matching lines @@
 
  private:
   scoped_ptr<ErrorState> error_state_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_