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| 1 // Copyright (c) 2013 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 "content/common/gpu/client/context_provider_command_buffer.h" |
| 6 |
| 7 #include "webkit/gpu/grcontext_for_webgraphicscontext3d.h" |
| 8 |
| 9 namespace content { |
| 10 |
| 11 class ContextProviderCommandBuffer::LostContextCallbackProxy |
| 12 : public WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback { |
| 13 public: |
| 14 LostContextCallbackProxy(ContextProviderCommandBuffer* provider) |
| 15 : provider_(provider) { |
| 16 provider_->context3d_->setContextLostCallback(this); |
| 17 } |
| 18 |
| 19 virtual void onContextLost() { |
| 20 provider_->OnLostContext(); |
| 21 } |
| 22 |
| 23 private: |
| 24 ContextProviderCommandBuffer* provider_; |
| 25 }; |
| 26 |
| 27 class ContextProviderCommandBuffer::MemoryAllocationCallbackProxy |
| 28 : public WebKit::WebGraphicsContext3D:: |
| 29 WebGraphicsMemoryAllocationChangedCallbackCHROMIUM { |
| 30 public: |
| 31 MemoryAllocationCallbackProxy(ContextProviderCommandBuffer* provider) |
| 32 : provider_(provider) { |
| 33 provider_->context3d_->setMemoryAllocationChangedCallbackCHROMIUM(this); |
| 34 } |
| 35 |
| 36 void onMemoryAllocationChanged(WebKit::WebGraphicsMemoryAllocation alloc) { |
| 37 provider_->OnMemoryAllocationChanged(!!alloc.gpuResourceSizeInBytes); |
| 38 } |
| 39 |
| 40 private: |
| 41 ContextProviderCommandBuffer* provider_; |
| 42 }; |
| 43 |
| 44 ContextProviderCommandBuffer::ContextProviderCommandBuffer() |
| 45 : destroyed_(false) { |
| 46 } |
| 47 |
| 48 ContextProviderCommandBuffer::~ContextProviderCommandBuffer() {} |
| 49 |
| 50 bool ContextProviderCommandBuffer::InitializeOnMainThread() { |
| 51 if (destroyed_) |
| 52 return false; |
| 53 if (context3d_) |
| 54 return true; |
| 55 |
| 56 context3d_ = CreateOffscreenContext3d().Pass(); |
| 57 destroyed_ = !context3d_; |
| 58 return !!context3d_; |
| 59 } |
| 60 |
| 61 bool ContextProviderCommandBuffer::BindToCurrentThread() { |
| 62 if (lost_context_callback_proxy_) |
| 63 return true; |
| 64 |
| 65 bool result = context3d_->makeContextCurrent(); |
| 66 lost_context_callback_proxy_.reset(new LostContextCallbackProxy(this)); |
| 67 return result; |
| 68 } |
| 69 |
| 70 WebGraphicsContext3DCommandBufferImpl* |
| 71 ContextProviderCommandBuffer::Context3d() { |
| 72 return context3d_.get(); |
| 73 } |
| 74 |
| 75 class GrContext* ContextProviderCommandBuffer::GrContext() { |
| 76 if (gr_context_) |
| 77 return gr_context_->get(); |
| 78 |
| 79 gr_context_.reset( |
| 80 new webkit::gpu::GrContextForWebGraphicsContext3D(context3d_.get())); |
| 81 memory_allocation_callback_proxy_.reset( |
| 82 new MemoryAllocationCallbackProxy(this)); |
| 83 return gr_context_->get(); |
| 84 } |
| 85 |
| 86 void ContextProviderCommandBuffer::VerifyContexts() { |
| 87 if (!destroyed_ && context3d_->isContextLost()) |
| 88 OnLostContext(); |
| 89 } |
| 90 |
| 91 void ContextProviderCommandBuffer::OnLostContext() { |
| 92 base::AutoLock lock(destroyed_lock_); |
| 93 destroyed_ = true; |
| 94 } |
| 95 |
| 96 bool ContextProviderCommandBuffer::DestroyedOnMainThread() { |
| 97 base::AutoLock lock(destroyed_lock_); |
| 98 return destroyed_; |
| 99 } |
| 100 |
| 101 void ContextProviderCommandBuffer::OnMemoryAllocationChanged( |
| 102 bool nonzero_allocation) { |
| 103 if (gr_context_) |
| 104 gr_context_->SetMemoryLimit(nonzero_allocation); |
| 105 } |
| 106 |
| 107 } // namespace content |
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