| /* |
| * 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 "SharedGraphicsContext3D.h" |
| |
| #include "Extensions3D.h" |
| #if PLATFORM(CHROMIUM) |
| #include "GraphicsContext3DPrivate.h" |
| #include <public/Platform.h> |
| #include <public/WebGraphicsContext3D.h> |
| #endif |
| #include <wtf/MainThread.h> |
| |
| namespace WebCore { |
| |
| class SharedGraphicsContext3DImpl { |
| public: |
| SharedGraphicsContext3DImpl() : m_context(0) { } |
| PassRefPtr<GraphicsContext3D> getOrCreateContext() |
| { |
| bool wasCreated = false; |
| |
| #if PLATFORM(CHROMIUM) |
| WebKit::WebGraphicsContext3D* webContext = WebKit::Platform::current()->sharedOffscreenGraphicsContext3D(); |
| GrContext* grContext = WebKit::Platform::current()->sharedOffscreenGrContext(); |
| |
| if (webContext && grContext) { |
| WebKit::WebGraphicsContext3D* oldWebContext = m_context ? GraphicsContext3DPrivate::extractWebGraphicsContext3D(m_context.get()) : 0; |
| GrContext* oldGrContext = m_context ? m_context->grContext() : 0; |
| if (webContext != oldWebContext || grContext != oldGrContext) |
| m_context.clear(); |
| |
| if (!m_context) { |
| m_context = GraphicsContext3DPrivate::createGraphicsContextFromExternalWebContextAndGrContext(webContext, grContext); |
| wasCreated = true; |
| } |
| |
| // FIXME: Don't fallback to the legacy path when chromium supports the new offscreen methods. |
| } else |
| #endif |
| { |
| // If we lost the context, or can't make it current, create a new one. |
| if (m_context && (!m_context->makeContextCurrent() || (m_context->getExtensions()->getGraphicsResetStatusARB() != GraphicsContext3D::NO_ERROR))) |
| m_context.clear(); |
| |
| if (!m_context) { |
| createContext(); |
| wasCreated = true; |
| } |
| |
| if (m_context && !m_context->makeContextCurrent()) |
| m_context.clear(); |
| } |
| |
| if (m_context && wasCreated) |
| m_context->getExtensions()->pushGroupMarkerEXT("SharedGraphicsContext"); |
| return m_context; |
| } |
| |
| PassRefPtr<GraphicsContext3D> getContext() |
| { |
| return m_context; |
| } |
| |
| PassRefPtr<GraphicsContext3D> createContext() |
| { |
| GraphicsContext3D::Attributes attributes; |
| attributes.depth = false; |
| attributes.stencil = true; |
| attributes.antialias = false; |
| attributes.shareResources = true; |
| m_context = GraphicsContext3D::create(attributes, 0); |
| return m_context; |
| } |
| private: |
| RefPtr<GraphicsContext3D> m_context; |
| }; |
| |
| PassRefPtr<GraphicsContext3D> SharedGraphicsContext3D::get() |
| { |
| DEFINE_STATIC_LOCAL(SharedGraphicsContext3DImpl, impl, ()); |
| return impl.getOrCreateContext(); |
| } |
| |
| enum ContextOperation { |
| Get, Create |
| }; |
| |
| static PassRefPtr<GraphicsContext3D> getOrCreateContextForImplThread(ContextOperation op) |
| { |
| DEFINE_STATIC_LOCAL(SharedGraphicsContext3DImpl, impl, ()); |
| return op == Create ? impl.createContext() : impl.getContext(); |
| } |
| |
| PassRefPtr<GraphicsContext3D> SharedGraphicsContext3D::getForImplThread() |
| { |
| return getOrCreateContextForImplThread(Get); |
| } |
| |
| bool SharedGraphicsContext3D::haveForImplThread() |
| { |
| ASSERT(isMainThread()); |
| return getOrCreateContextForImplThread(Get); |
| } |
| |
| bool SharedGraphicsContext3D::createForImplThread() |
| { |
| ASSERT(isMainThread()); |
| return getOrCreateContextForImplThread(Create); |
| } |
| |
| } |
| |