gpu/command_buffer/client/share_group.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_
   6 #define GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_
   7
   8 #include <GLES2/gl2.h>
   9 #include "base/memory/scoped_ptr.h"
  10 #include "gles2_impl_export.h"
  11 #include "gpu/command_buffer/client/ref_counted.h"
  12 #include "gpu/command_buffer/common/gles2_cmd_format.h"
  13
  14 namespace gpu {
  15 namespace gles2 {
  16
  17 class GLES2Implementation;
  18 class GLES2ImplementationTest;
  19 class ProgramInfoManager;
  20
  21 typedef void (GLES2Implementation::*DeleteFn)(GLsizei n, const GLuint* ids);
  22
  23 // Base class for IdHandlers
  24 class IdHandlerInterface {
  25  public:
  26   IdHandlerInterface() { }
  27   virtual ~IdHandlerInterface() { }
  28
  29   // Makes some ids at or above id_offset.
  30   virtual void MakeIds(
  31       GLES2Implementation* gl_impl,
  32       GLuint id_offset, GLsizei n, GLuint* ids) = 0;
  33
  34   // Frees some ids.
  35   virtual bool FreeIds(
  36       GLES2Implementation* gl_impl, GLsizei n, const GLuint* ids,
  37       DeleteFn delete_fn) = 0;
  38
  39   // Marks an id as used for glBind functions. id = 0 does nothing.
  40   virtual bool MarkAsUsedForBind(GLuint id) = 0;
  41 };
  42
  43 // ShareGroup manages shared resources for contexts that are sharing resources.
  44 class GLES2_IMPL_EXPORT ShareGroup
  45     : public gpu::RefCountedThreadSafe<ShareGroup> {
  46  public:
  47   ShareGroup(bool bind_generates_resource);
  48
  49   bool bind_generates_resource() const {
  50     return bind_generates_resource_;
  51   }
  52
  53   bool Initialize();
  54
  55   IdHandlerInterface* GetIdHandler(int namespace_id) const {
  56     return id_handlers_[namespace_id].get();
  57   }
  58
  59   ProgramInfoManager* program_info_manager() {
  60     return program_info_manager_.get();
  61   }
  62
  63  private:
  64   friend class gpu::RefCountedThreadSafe<ShareGroup>;
  65   friend class gpu::gles2::GLES2ImplementationTest;
  66   ~ShareGroup();
  67
  68   // Install a new program info manager. Used for testing only;
  69   void set_program_info_manager(ProgramInfoManager* manager);
  70
  71   scoped_ptr<IdHandlerInterface> id_handlers_[id_namespaces::kNumIdNamespaces];
  72   scoped_ptr<ProgramInfoManager> program_info_manager_;
  73
  74   bool bind_generates_resource_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(ShareGroup);
  77 };
  78
  79 }  // namespace gles2
  80 }  // namespace gpu
  81
  82 #endif  // GPU_COMMAND_BUFFER_CLIENT_SHARE_GROUP_H_