| // Copyright (c) 2013 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. |
| |
| #include "webkit/common/gpu/grcontext_for_webgraphicscontext3d.h" |
| |
| #include "base/lazy_instance.h" |
| #include "base/trace_event/trace_event.h" |
| #include "gpu/blink/webgraphicscontext3d_impl.h" |
| #include "gpu/command_buffer/client/gles2_lib.h" |
| #include "third_party/skia/include/gpu/GrContext.h" |
| #include "third_party/skia/include/gpu/gl/GrGLInterface.h" |
| |
| using gpu_blink::WebGraphicsContext3DImpl; |
| |
| namespace webkit { |
| namespace gpu { |
| |
| namespace { |
| |
| // Singleton used to initialize and terminate the gles2 library. |
| class GLES2Initializer { |
| public: |
| GLES2Initializer() { gles2::Initialize(); } |
| |
| ~GLES2Initializer() { gles2::Terminate(); } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(GLES2Initializer); |
| }; |
| |
| base::LazyInstance<GLES2Initializer> g_gles2_initializer = |
| LAZY_INSTANCE_INITIALIZER; |
| |
| void BindWebGraphicsContext3DGLContextCallback(const GrGLInterface* interface) { |
| gles2::SetGLContext(reinterpret_cast<WebGraphicsContext3DImpl*>( |
| interface->fCallbackData)->GetGLInterface()); |
| } |
| |
| } // namespace anonymous |
| |
| GrContextForWebGraphicsContext3D::GrContextForWebGraphicsContext3D( |
| WebGraphicsContext3DImpl* context3d) { |
| if (!context3d) |
| return; |
| |
| // Ensure the gles2 library is initialized first in a thread safe way. |
| g_gles2_initializer.Get(); |
| gles2::SetGLContext(context3d->GetGLInterface()); |
| skia::RefPtr<GrGLInterface> interface = skia::AdoptRef( |
| context3d->createGrGLInterface()); |
| if (!interface) |
| return; |
| |
| interface->fCallback = BindWebGraphicsContext3DGLContextCallback; |
| interface->fCallbackData = |
| reinterpret_cast<GrGLInterfaceCallbackData>(context3d); |
| |
| gr_context_ = skia::AdoptRef(GrContext::Create( |
| kOpenGL_GrBackend, |
| reinterpret_cast<GrBackendContext>(interface.get()))); |
| if (gr_context_) { |
| // The limit of the number of GPU resources we hold in the GrContext's |
| // GPU cache. |
| static const int kMaxGaneshResourceCacheCount = 2048; |
| // The limit of the bytes allocated toward GPU resources in the GrContext's |
| // GPU cache. |
| static const size_t kMaxGaneshResourceCacheBytes = 96 * 1024 * 1024; |
| |
| gr_context_->setResourceCacheLimits(kMaxGaneshResourceCacheCount, |
| kMaxGaneshResourceCacheBytes); |
| } |
| } |
| |
| GrContextForWebGraphicsContext3D::~GrContextForWebGraphicsContext3D() { |
| } |
| |
| void GrContextForWebGraphicsContext3D::OnLostContext() { |
| if (gr_context_) |
| gr_context_->abandonContext(); |
| } |
| |
| void GrContextForWebGraphicsContext3D::FreeGpuResources() { |
| if (gr_context_) { |
| TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources", \ |
| TRACE_EVENT_SCOPE_THREAD); |
| gr_context_->freeGpuResources(); |
| } |
| } |
| |
| } // namespace gpu |
| } // namespace webkit |