| /* |
| * Copyright (C) 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| #include "config.h" |
| |
| #include "core/platform/graphics/gpu/SharedGraphicsContext3D.h" |
| |
| #include "core/platform/graphics/Extensions3D.h" |
| #include "core/platform/graphics/GraphicsContext3D.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebGraphicsContext3D.h" |
| #include "public/platform/WebGraphicsContext3DProvider.h" |
| #include "wtf/MainThread.h" |
| |
| namespace WebCore { |
| |
| class SharedGraphicsContext3DImpl { |
| public: |
| SharedGraphicsContext3DImpl() : m_context(0) { } |
| |
| PassRefPtr<GraphicsContext3D> getOrCreateContext() |
| { |
| bool wasCreated = false; |
| |
| OwnPtr<WebKit::WebGraphicsContext3DProvider> provider = adoptPtr(WebKit::Platform::current()->createSharedOffscreenGraphicsContext3DProvider()); |
| |
| WebKit::WebGraphicsContext3D* webContext = 0; |
| GrContext* grContext = 0; |
| |
| if (provider) { |
| webContext = provider->context3d(); |
| grContext = provider->grContext(); |
| } |
| |
| if (webContext && grContext) { |
| WebKit::WebGraphicsContext3D* oldWebContext = m_context ? m_context->webContext() : 0; |
| GrContext* oldGrContext = m_context ? m_context->grContext() : 0; |
| if (webContext != oldWebContext || grContext != oldGrContext) |
| m_context.clear(); |
| |
| if (!m_context) { |
| m_context = GraphicsContext3D::createGraphicsContextFromProvider(provider.release()); |
| wasCreated = true; |
| } |
| } |
| |
| if (m_context && wasCreated) |
| m_context->getExtensions()->pushGroupMarkerEXT("SharedGraphicsContext"); |
| return m_context; |
| } |
| |
| private: |
| RefPtr<GraphicsContext3D> m_context; |
| }; |
| |
| PassRefPtr<GraphicsContext3D> SharedGraphicsContext3D::get() |
| { |
| DEFINE_STATIC_LOCAL(SharedGraphicsContext3DImpl, impl, ()); |
| return impl.getOrCreateContext(); |
| } |
| |
| } // namespace WebCore |
| |