Allow textures to be moved from one GL context group to another.

gpu/command_buffer/service/context_group.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_CONTEXT_GROUP_H_
 #define GPU_COMMAND_BUFFER_SERVICE_CONTEXT_GROUP_H_
 
 #include <string>
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/service/gles2_cmd_validation.h"
 #include "gpu/command_buffer/service/feature_info.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
 
 class IdAllocatorInterface;
 
 namespace gles2 {
 
+class BufferManager;
 class GLES2Decoder;
-class BufferManager;
 class FramebufferManager;
+class MailboxManager;
 class RenderbufferManager;
 class ProgramManager;
 class ShaderManager;
 class TextureManager;
 struct DisallowedFeatures;
 
 // A Context Group helps manage multiple GLES2Decoders that share
 // resources.
 class GPU_EXPORT ContextGroup : public base::RefCounted<ContextGroup> {
  public:
   typedef scoped_refptr<ContextGroup> Ref;
 
-  explicit ContextGroup(bool bind_generates_resource);
+  explicit ContextGroup(MailboxManager* mailbox_manager,
+                        bool bind_generates_resource);
   ~ContextGroup();
 
   // This should only be called by GLES2Decoder. This must be paired with a
   // call to destroy if it succeeds.
   bool Initialize(const DisallowedFeatures& disallowed_features,
                   const char* allowed_features);
 
   // Destroys all the resources when called for the last context in the group.
   // It should only be called by GLES2Decoder.
   void Destroy(bool have_context);
 
+  MailboxManager* mailbox_manager() const {
+    return mailbox_manager_.get();
+  }
+
   bool bind_generates_resource() {
     return bind_generates_resource_;
   }
 
   uint32 max_vertex_attribs() const {
     return max_vertex_attribs_;
   }
 
   uint32 max_texture_units() const {
     return max_texture_units_;
@@ skipping 48 matching lines @@
   }
 
   IdAllocatorInterface* GetIdAllocator(unsigned namespace_id);
 
  private:
   bool CheckGLFeature(GLint min_required, GLint* v);
   bool CheckGLFeatureU(GLint min_required, uint32* v);
   bool QueryGLFeature(GLenum pname, GLint min_required, GLint* v);
   bool QueryGLFeatureU(GLenum pname, GLint min_required, uint32* v);
 
+  scoped_refptr<MailboxManager> mailbox_manager_;
+
   // Whether or not this context is initialized.
   int num_contexts_;
   bool enforce_gl_minimums_;
   bool bind_generates_resource_;
 
   uint32 max_vertex_attribs_;
   uint32 max_texture_units_;
   uint32 max_texture_image_units_;
   uint32 max_vertex_texture_image_units_;
   uint32 max_fragment_uniform_vectors_;
@@ skipping 19 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContextGroup);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_GROUP_H_