OLD | NEW |
| (Empty) |
1 // Copyright (c) 2011 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 #include "chrome/renderer/pepper_platform_context_3d_impl.h" | |
6 | |
7 #include "chrome/renderer/render_thread.h" | |
8 #include "content/renderer/command_buffer_proxy.h" | |
9 #include "content/renderer/ggl.h" | |
10 #include "content/renderer/gpu_channel_host.h" | |
11 #include "gpu/command_buffer/client/gles2_cmd_helper.h" | |
12 #include "gpu/command_buffer/client/gles2_implementation.h" | |
13 | |
14 #ifdef ENABLE_GPU | |
15 PlatformContext3DImpl::PlatformContext3DImpl(ggl::Context* parent_context) | |
16 : parent_context_(ggl::GetWeakContextReference(parent_context)), | |
17 parent_texture_id_(0), | |
18 command_buffer_(NULL), | |
19 callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) { | |
20 } | |
21 | |
22 PlatformContext3DImpl::~PlatformContext3DImpl() { | |
23 if (command_buffer_) { | |
24 DCHECK(channel_.get()); | |
25 channel_->DestroyCommandBuffer(command_buffer_); | |
26 command_buffer_ = NULL; | |
27 } | |
28 | |
29 channel_ = NULL; | |
30 | |
31 if (parent_context_.get() && parent_texture_id_ != 0) { | |
32 ggl::GetImplementation(parent_context_)->FreeTextureId(parent_texture_id_); | |
33 } | |
34 | |
35 } | |
36 | |
37 bool PlatformContext3DImpl::Init() { | |
38 // Ignore initializing more than once. | |
39 if (command_buffer_) | |
40 return true; | |
41 | |
42 // Parent may already have been deleted. | |
43 if (!parent_context_.get()) | |
44 return false; | |
45 | |
46 RenderThread* render_thread = RenderThread::current(); | |
47 if (!render_thread) | |
48 return false; | |
49 | |
50 channel_ = render_thread->GetGpuChannel(); | |
51 if (!channel_.get()) | |
52 return false; | |
53 | |
54 DCHECK(channel_->state() == GpuChannelHost::kConnected); | |
55 | |
56 // Flush any remaining commands in the parent context to make sure the | |
57 // texture id accounting stays consistent. | |
58 gpu::gles2::GLES2Implementation* parent_gles2 = | |
59 ggl::GetImplementation(parent_context_); | |
60 parent_gles2->helper()->CommandBufferHelper::Finish(); | |
61 parent_texture_id_ = parent_gles2->MakeTextureId(); | |
62 | |
63 // TODO(apatrick): Let Pepper plugins configure their back buffer surface. | |
64 static const int32 kAttribs[] = { | |
65 ggl::GGL_ALPHA_SIZE, 8, | |
66 ggl::GGL_DEPTH_SIZE, 24, | |
67 ggl::GGL_STENCIL_SIZE, 8, | |
68 ggl::GGL_SAMPLES, 0, | |
69 ggl::GGL_SAMPLE_BUFFERS, 0, | |
70 ggl::GGL_NONE, | |
71 }; | |
72 std::vector<int32> attribs(kAttribs, kAttribs + ARRAYSIZE_UNSAFE(kAttribs)); | |
73 CommandBufferProxy* parent_command_buffer = | |
74 ggl::GetCommandBufferProxy(parent_context_); | |
75 command_buffer_ = channel_->CreateOffscreenCommandBuffer( | |
76 parent_command_buffer, | |
77 gfx::Size(1, 1), | |
78 "*", | |
79 attribs, | |
80 parent_texture_id_); | |
81 if (!command_buffer_) | |
82 return false; | |
83 command_buffer_->SetChannelErrorCallback(callback_factory_.NewCallback( | |
84 &PlatformContext3DImpl::OnContextLost)); | |
85 | |
86 return true; | |
87 } | |
88 | |
89 void PlatformContext3DImpl::SetSwapBuffersCallback(Callback0::Type* callback) { | |
90 DCHECK(command_buffer_); | |
91 command_buffer_->SetSwapBuffersCallback(callback); | |
92 } | |
93 | |
94 unsigned PlatformContext3DImpl::GetBackingTextureId() { | |
95 DCHECK(command_buffer_); | |
96 return parent_texture_id_; | |
97 } | |
98 | |
99 gpu::CommandBuffer* PlatformContext3DImpl::GetCommandBuffer() { | |
100 return command_buffer_; | |
101 } | |
102 | |
103 void PlatformContext3DImpl::SetContextLostCallback(Callback0::Type* callback) { | |
104 context_lost_callback_.reset(callback); | |
105 } | |
106 | |
107 void PlatformContext3DImpl::OnContextLost() { | |
108 DCHECK(command_buffer_); | |
109 | |
110 if (context_lost_callback_.get()) | |
111 context_lost_callback_->Run(); | |
112 } | |
113 | |
114 #endif // ENABLE_GPU | |
OLD | NEW |