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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "build/build_config.h" | 5 #include "build/build_config.h" |
6 | 6 |
| 7 #include "base/lazy_instance.h" |
7 #include "base/ref_counted.h" | 8 #include "base/ref_counted.h" |
8 #include "base/singleton.h" | |
9 #include "base/weak_ptr.h" | 9 #include "base/weak_ptr.h" |
10 #include "chrome/renderer/command_buffer_proxy.h" | 10 #include "chrome/renderer/command_buffer_proxy.h" |
11 #include "chrome/renderer/ggl/ggl.h" | 11 #include "chrome/renderer/ggl/ggl.h" |
12 #include "chrome/renderer/gpu_channel_host.h" | 12 #include "chrome/renderer/gpu_channel_host.h" |
13 #include "chrome/renderer/gpu_video_service_host.h" | 13 #include "chrome/renderer/gpu_video_service_host.h" |
14 #include "chrome/renderer/media/gles2_video_decode_context.h" | 14 #include "chrome/renderer/media/gles2_video_decode_context.h" |
15 #include "chrome/renderer/render_widget.h" | 15 #include "chrome/renderer/render_widget.h" |
16 #include "ipc/ipc_channel_handle.h" | 16 #include "ipc/ipc_channel_handle.h" |
17 | 17 |
18 #if defined(ENABLE_GPU) | 18 #if defined(ENABLE_GPU) |
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41 gles2::Initialize(); | 41 gles2::Initialize(); |
42 } | 42 } |
43 | 43 |
44 ~GLES2Initializer() { | 44 ~GLES2Initializer() { |
45 gles2::Terminate(); | 45 gles2::Terminate(); |
46 } | 46 } |
47 | 47 |
48 private: | 48 private: |
49 DISALLOW_COPY_AND_ASSIGN(GLES2Initializer); | 49 DISALLOW_COPY_AND_ASSIGN(GLES2Initializer); |
50 }; | 50 }; |
| 51 |
| 52 static base::LazyInstance<GLES2Initializer> g_gles2_initializer( |
| 53 base::LINKER_INITIALIZED); |
| 54 |
51 } // namespace anonymous | 55 } // namespace anonymous |
52 | 56 |
53 // Manages a GL context. | 57 // Manages a GL context. |
54 class Context : public base::SupportsWeakPtr<Context> { | 58 class Context : public base::SupportsWeakPtr<Context> { |
55 public: | 59 public: |
56 Context(GpuChannelHost* channel, Context* parent); | 60 Context(GpuChannelHost* channel, Context* parent); |
57 ~Context(); | 61 ~Context(); |
58 | 62 |
59 // Initialize a GGL context that can be used in association with a a GPU | 63 // Initialize a GGL context that can be used in association with a a GPU |
60 // channel acquired from a RenderWidget or RenderView. | 64 // channel acquired from a RenderWidget or RenderView. |
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156 int render_view_id, | 160 int render_view_id, |
157 const gfx::Size& size, | 161 const gfx::Size& size, |
158 const char* allowed_extensions, | 162 const char* allowed_extensions, |
159 const int32* attrib_list) { | 163 const int32* attrib_list) { |
160 DCHECK(size.width() >= 0 && size.height() >= 0); | 164 DCHECK(size.width() >= 0 && size.height() >= 0); |
161 | 165 |
162 if (channel_->state() != GpuChannelHost::kConnected) | 166 if (channel_->state() != GpuChannelHost::kConnected) |
163 return false; | 167 return false; |
164 | 168 |
165 // Ensure the gles2 library is initialized first in a thread safe way. | 169 // Ensure the gles2 library is initialized first in a thread safe way. |
166 Singleton<GLES2Initializer>::get(); | 170 g_gles2_initializer.Get(); |
167 | 171 |
168 // Allocate a frame buffer ID with respect to the parent. | 172 // Allocate a frame buffer ID with respect to the parent. |
169 if (parent_.get()) { | 173 if (parent_.get()) { |
170 // Flush any remaining commands in the parent context to make sure the | 174 // Flush any remaining commands in the parent context to make sure the |
171 // texture id accounting stays consistent. | 175 // texture id accounting stays consistent. |
172 int32 token = parent_->gles2_helper_->InsertToken(); | 176 int32 token = parent_->gles2_helper_->InsertToken(); |
173 parent_->gles2_helper_->WaitForToken(token); | 177 parent_->gles2_helper_->WaitForToken(token); |
174 parent_texture_id_ = parent_->gles2_implementation_->MakeTextureId(); | 178 parent_texture_id_ = parent_->gles2_implementation_->MakeTextureId(); |
175 } | 179 } |
176 | 180 |
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562 } | 566 } |
563 | 567 |
564 gpu::gles2::GLES2Implementation* GetImplementation(Context* context) { | 568 gpu::gles2::GLES2Implementation* GetImplementation(Context* context) { |
565 if (!context) | 569 if (!context) |
566 return NULL; | 570 return NULL; |
567 | 571 |
568 return context->gles2_implementation(); | 572 return context->gles2_implementation(); |
569 } | 573 } |
570 | 574 |
571 } // namespace ggl | 575 } // namespace ggl |
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