gpu: Refactor to support cross-channel shared textures

gpu/command_buffer/service/framebuffer_manager.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 GPU_COMMAND_BUFFER_SERVICE_FRAMEBUFFER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_FRAMEBUFFER_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
 namespace gles2 {
 
 class FramebufferManager;
 class Renderbuffer;
 class RenderbufferManager;
 class Texture;
+class TextureRef;
 class TextureManager;
 
 // Info about a particular Framebuffer.
 class GPU_EXPORT Framebuffer : public base::RefCounted<Framebuffer> {
  public:
   class Attachment : public base::RefCounted<Attachment> {
    public:
     virtual GLsizei width() const = 0;
     virtual GLsizei height() const = 0;
     virtual GLenum internal_format() const = 0;
     virtual GLsizei samples() const = 0;
     virtual bool cleared() const = 0;
     virtual void SetCleared(
         RenderbufferManager* renderbuffer_manager,
         TextureManager* texture_manager,
         bool cleared) = 0;
-    virtual bool IsTexture(Texture* texture) const = 0;
+    virtual bool IsTexture(TextureRef* texture) const = 0;
     virtual bool IsRenderbuffer(
         Renderbuffer* renderbuffer) const = 0;
     virtual bool CanRenderTo() const = 0;
     virtual void DetachFromFramebuffer() const = 0;
     virtual bool ValidForAttachmentType(
         GLenum attachment_type, uint32 max_color_attachments) = 0;
     virtual void AddToSignature(
         TextureManager* texture_manager, std::string* signature) const = 0;
 
    protected:
@@ skipping 15 matching lines @@
     GLenum attachment,
     bool cleared);
 
   // Attaches a renderbuffer to a particlar attachment.
   // Pass null to detach.
   void AttachRenderbuffer(
       GLenum attachment, Renderbuffer* renderbuffer);
 
   // Attaches a texture to a particlar attachment. Pass null to detach.
   void AttachTexture(
-      GLenum attachment, Texture* texture, GLenum target,
+      GLenum attachment, TextureRef* texture_ref, GLenum target,
       GLint level);
 
   // Unbinds the given renderbuffer if it is bound.
   void UnbindRenderbuffer(
       GLenum target, Renderbuffer* renderbuffer);
 
   // Unbinds the given texture if it is bound.
   void UnbindTexture(
-      GLenum target, Texture* texture);
+      GLenum target, TextureRef* texture_ref);
 
   const Attachment* GetAttachment(GLenum attachment) const;
 
   bool IsDeleted() const {
     return deleted_;
   }
 
   void MarkAsValid() {
     has_been_bound_ = true;
   }
@@ skipping 142 matching lines @@
   uint32 max_draw_buffers_;
   uint32 max_color_attachments_;
 
   DISALLOW_COPY_AND_ASSIGN(FramebufferManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_FRAMEBUFFER_MANAGER_H_