Merged GraphicsContext3DPrivate into GraphicsContext3D

Source/core/platform/chromium/support/GraphicsContext3DPrivate.cpp

Index: Source/core/platform/chromium/support/GraphicsContext3DPrivate.cpp
diff --git a/Source/core/platform/chromium/support/GraphicsContext3DPrivate.cpp b/Source/core/platform/chromium/support/GraphicsContext3DPrivate.cpp
deleted file mode 100644
index df84c7409a618217e08c3139e30903767b4b694f..0000000000000000000000000000000000000000
--- a/Source/core/platform/chromium/support/GraphicsContext3DPrivate.cpp
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Copyright (C) 2009 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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/chromium/support/GraphicsContext3DPrivate.h"
-
-#include "GrContext.h"
-#include "GrGLInterface.h"
-#include "core/platform/graphics/Extensions3D.h"
-#include "core/platform/graphics/GraphicsContext.h"
-#include "core/platform/graphics/ImageBuffer.h"
-#include "core/platform/graphics/gpu/DrawingBuffer.h"
-#include <public/WebGraphicsContext3D.h>
-#include <public/WebGraphicsContext3DProvider.h>
-#include <public/WebGraphicsMemoryAllocation.h>
-#include <wtf/text/CString.h>
-#include <wtf/text/StringHash.h>
-
-namespace {
-
-// The limit of the number of textures we hold in the GrContext's bitmap->texture cache.
-const int maxGaneshTextureCacheCount = 2048;
-// The limit of the bytes allocated toward textures in the GrContext's bitmap->texture cache.
-const size_t maxGaneshTextureCacheBytes = 96 * 1024 * 1024;
-
-}
-
-namespace WebCore {
-
-//----------------------------------------------------------------------
-// GraphicsContext3DPrivate
-
-GraphicsContext3DPrivate::GraphicsContext3DPrivate(PassOwnPtr<WebKit::WebGraphicsContext3D> webContext, bool preserveDrawingBuffer)
-    : m_impl(webContext.get())
-    , m_ownedWebContext(webContext)
-    , m_initializedAvailableExtensions(false)
-    , m_layerComposited(false)
-    , m_preserveDrawingBuffer(preserveDrawingBuffer)
-    , m_resourceSafety(ResourceSafetyUnknown)
-    , m_grContext(0)
-{
-}
-
-GraphicsContext3DPrivate::GraphicsContext3DPrivate(PassOwnPtr<WebKit::WebGraphicsContext3DProvider> provider, bool preserveDrawingBuffer)
-    : m_provider(provider)
-    , m_impl(m_provider->context3d())
-    , m_initializedAvailableExtensions(false)
-    , m_layerComposited(false)
-    , m_preserveDrawingBuffer(preserveDrawingBuffer)
-    , m_resourceSafety(ResourceSafetyUnknown)
-    , m_grContext(m_provider->grContext())
-{
-}
-
-
-GraphicsContext3DPrivate::~GraphicsContext3DPrivate()
-{
-    if (m_ownedGrContext) {
-        m_ownedWebContext->setMemoryAllocationChangedCallbackCHROMIUM(0);
-        m_ownedGrContext->contextDestroyed();
-    }
-}
-
-PassRefPtr<GraphicsContext3D> GraphicsContext3DPrivate::createGraphicsContextFromWebContext(PassOwnPtr<WebKit::WebGraphicsContext3D> webContext, bool preserveDrawingBuffer)
-{
-    RefPtr<GraphicsContext3D> context = adoptRef(new GraphicsContext3D());
-
-    OwnPtr<GraphicsContext3DPrivate> priv = adoptPtr(new GraphicsContext3DPrivate(webContext, preserveDrawingBuffer));
-    context->m_private = priv.release();
-    return context.release();
-}
-
-PassRefPtr<GraphicsContext3D> GraphicsContext3DPrivate::createGraphicsContextFromProvider(PassOwnPtr<WebKit::WebGraphicsContext3DProvider> provider, bool preserveDrawingBuffer)
-{
-    RefPtr<GraphicsContext3D> context = adoptRef(new GraphicsContext3D());
-
-    OwnPtr<GraphicsContext3DPrivate> priv = adoptPtr(new GraphicsContext3DPrivate(provider, preserveDrawingBuffer));
-    context->m_private = priv.release();
-    return context.release();
-}
-
-WebKit::WebGraphicsContext3D* GraphicsContext3DPrivate::extractWebGraphicsContext3D(GraphicsContext3D* context)
-{
-    if (!context)
-        return 0;
-    return context->m_private->webContext();
-}
-
-class GrMemoryAllocationChangedCallbackAdapter : public WebKit::WebGraphicsContext3D::WebGraphicsMemoryAllocationChangedCallbackCHROMIUM {
-public:
-    GrMemoryAllocationChangedCallbackAdapter(GrContext* context)
-        : m_context(context)
-    {
-    }
-
-    virtual void onMemoryAllocationChanged(WebKit::WebGraphicsMemoryAllocation allocation) OVERRIDE
-    {
-        if (!m_context)
-            return;
-
-        if (!allocation.gpuResourceSizeInBytes) {
-            m_context->freeGpuResources();
-            m_context->setTextureCacheLimits(0, 0);
-        } else
-            m_context->setTextureCacheLimits(maxGaneshTextureCacheCount, maxGaneshTextureCacheBytes);
-    }
-
-private:
-    GrContext* m_context;
-};
-
-namespace {
-void bindWebGraphicsContext3DGLContextCallback(const GrGLInterface* interface)
-{
-    reinterpret_cast<WebKit::WebGraphicsContext3D*>(interface->fCallbackData)->makeContextCurrent();
-}
-}
-
-GrContext* GraphicsContext3DPrivate::grContext()
-{
-    if (m_grContext)
-        return m_grContext;
-    if (!m_ownedWebContext)
-        return 0;
-
-    SkAutoTUnref<GrGLInterface> interface(m_ownedWebContext->createGrGLInterface());
-    if (!interface)
-        return 0;
-
-    interface->fCallback = bindWebGraphicsContext3DGLContextCallback;
-    interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(m_ownedWebContext.get());
-
-    m_ownedGrContext.reset(GrContext::Create(kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
-    m_grContext = m_ownedGrContext;
-    if (!m_grContext)
-        return 0;
-
-    m_grContext->setTextureCacheLimits(maxGaneshTextureCacheCount, maxGaneshTextureCacheBytes);
-    m_grContextMemoryAllocationCallbackAdapter = adoptPtr(new GrMemoryAllocationChangedCallbackAdapter(m_grContext));
-    m_ownedWebContext->setMemoryAllocationChangedCallbackCHROMIUM(m_grContextMemoryAllocationCallbackAdapter.get());
-
-    return m_grContext;
-}
-
-void GraphicsContext3DPrivate::markContextChanged()
-{
-    m_layerComposited = false;
-}
-
-bool GraphicsContext3DPrivate::layerComposited() const
-{
-    return m_layerComposited;
-}
-
-void GraphicsContext3DPrivate::markLayerComposited()
-{
-    m_layerComposited = true;
-}
-
-void GraphicsContext3DPrivate::paintFramebufferToCanvas(int framebuffer, int width, int height, bool premultiplyAlpha, ImageBuffer* imageBuffer)
-{
-    unsigned char* pixels = 0;
-    size_t bufferSize = 4 * width * height;
-
-    const SkBitmap* canvasBitmap = imageBuffer->context()->bitmap();
-    const SkBitmap* readbackBitmap = 0;
-    ASSERT(canvasBitmap->config() == SkBitmap::kARGB_8888_Config);
-    if (canvasBitmap->width() == width && canvasBitmap->height() == height) {
-        // This is the fastest and most common case. We read back
-        // directly into the canvas's backing store.
-        readbackBitmap = canvasBitmap;
-        m_resizingBitmap.reset();
-    } else {
-        // We need to allocate a temporary bitmap for reading back the
-        // pixel data. We will then use Skia to rescale this bitmap to
-        // the size of the canvas's backing store.
-        if (m_resizingBitmap.width() != width || m_resizingBitmap.height() != height) {
-            m_resizingBitmap.setConfig(SkBitmap::kARGB_8888_Config,
-                                       width,
-                                       height);
-            if (!m_resizingBitmap.allocPixels())
-                return;
-        }
-        readbackBitmap = &m_resizingBitmap;
-    }
-
-    // Read back the frame buffer.
-    SkAutoLockPixels bitmapLock(*readbackBitmap);
-    pixels = static_cast<unsigned char*>(readbackBitmap->getPixels());
-
-    m_impl->readBackFramebuffer(pixels, 4 * width * height, framebuffer, width, height);
-
-    if (premultiplyAlpha) {
-        for (size_t i = 0; i < bufferSize; i += 4) {
-            pixels[i + 0] = std::min(255, pixels[i + 0] * pixels[i + 3] / 255);
-            pixels[i + 1] = std::min(255, pixels[i + 1] * pixels[i + 3] / 255);
-            pixels[i + 2] = std::min(255, pixels[i + 2] * pixels[i + 3] / 255);
-        }
-    }
-
-    readbackBitmap->notifyPixelsChanged();
-    if (m_resizingBitmap.readyToDraw()) {
-        // We need to draw the resizing bitmap into the canvas's backing store.
-        SkCanvas canvas(*canvasBitmap);
-        SkRect dst;
-        dst.set(SkIntToScalar(0), SkIntToScalar(0), SkIntToScalar(canvasBitmap->width()), SkIntToScalar(canvasBitmap->height()));
-        canvas.drawBitmapRect(m_resizingBitmap, 0, dst);
-    }
-}
-
-class GraphicsContext3DContextLostCallbackAdapter : public WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback {
-public:
-    GraphicsContext3DContextLostCallbackAdapter(PassOwnPtr<GraphicsContext3D::ContextLostCallback> callback)
-        : m_contextLostCallback(callback) { }
-    virtual ~GraphicsContext3DContextLostCallbackAdapter() { }
-
-    virtual void onContextLost()
-    {
-        if (m_contextLostCallback)
-            m_contextLostCallback->onContextLost();
-    }
-private:
-    OwnPtr<GraphicsContext3D::ContextLostCallback> m_contextLostCallback;
-};
-
-void GraphicsContext3DPrivate::setContextLostCallback(PassOwnPtr<GraphicsContext3D::ContextLostCallback> callback)
-{
-    if (m_ownedWebContext) {
-        m_contextLostCallbackAdapter = adoptPtr(new GraphicsContext3DContextLostCallbackAdapter(callback));
-        m_ownedWebContext->setContextLostCallback(m_contextLostCallbackAdapter.get());
-    }
-}
-
-class GraphicsContext3DErrorMessageCallbackAdapter : public WebKit::WebGraphicsContext3D::WebGraphicsErrorMessageCallback {
-public:
-    GraphicsContext3DErrorMessageCallbackAdapter(PassOwnPtr<GraphicsContext3D::ErrorMessageCallback> callback)
-        : m_errorMessageCallback(callback) { }
-    virtual ~GraphicsContext3DErrorMessageCallbackAdapter() { }
-
-    virtual void onErrorMessage(const WebKit::WebString& message, WebKit::WGC3Dint id)
-    {
-        if (m_errorMessageCallback)
-            m_errorMessageCallback->onErrorMessage(message, id);
-    }
-private:
-    OwnPtr<GraphicsContext3D::ErrorMessageCallback> m_errorMessageCallback;
-};
-
-void GraphicsContext3DPrivate::setErrorMessageCallback(PassOwnPtr<GraphicsContext3D::ErrorMessageCallback> callback)
-{
-    if (m_ownedWebContext) {
-        m_errorMessageCallbackAdapter = adoptPtr(new GraphicsContext3DErrorMessageCallbackAdapter(callback));
-        m_ownedWebContext->setErrorMessageCallback(m_errorMessageCallbackAdapter.get());
-    }
-}
-
-Extensions3D* GraphicsContext3DPrivate::getExtensions()
-{
-    if (!m_extensions)
-        m_extensions = adoptPtr(new Extensions3D(this));
-    return m_extensions.get();
-}
-
-namespace {
-
-void splitStringHelper(const String& str, HashSet<String>& set)
-{
-    Vector<String> substrings;
-    str.split(" ", substrings);
-    for (size_t i = 0; i < substrings.size(); ++i)
-        set.add(substrings[i]);
-}
-
-String mapExtensionName(const String& name)
-{
-    if (name == "GL_ANGLE_framebuffer_blit"
-        || name == "GL_ANGLE_framebuffer_multisample")
-        return "GL_CHROMIUM_framebuffer_multisample";
-    return name;
-}
-
-} // anonymous namespace
-
-void GraphicsContext3DPrivate::initializeExtensions()
-{
-    if (m_initializedAvailableExtensions)
-        return;
-
-    m_initializedAvailableExtensions = true;
-    bool success = m_impl->makeContextCurrent();
-    ASSERT(success);
-    if (!success)
-        return;
-
-    String extensionsString = m_impl->getString(GraphicsContext3D::EXTENSIONS);
-    splitStringHelper(extensionsString, m_enabledExtensions);
-
-    String requestableExtensionsString = m_impl->getRequestableExtensionsCHROMIUM();
-    splitStringHelper(requestableExtensionsString, m_requestableExtensions);
-}
-
-
-bool GraphicsContext3DPrivate::supportsExtension(const String& name)
-{
-    initializeExtensions();
-    String mappedName = mapExtensionName(name);
-    return m_enabledExtensions.contains(mappedName) || m_requestableExtensions.contains(mappedName);
-}
-
-bool GraphicsContext3DPrivate::ensureExtensionEnabled(const String& name)
-{
-    initializeExtensions();
-
-    String mappedName = mapExtensionName(name);
-    if (m_enabledExtensions.contains(mappedName))
-        return true;
-
-    if (m_requestableExtensions.contains(mappedName)) {
-        m_impl->requestExtensionCHROMIUM(mappedName.ascii().data());
-        m_enabledExtensions.clear();
-        m_requestableExtensions.clear();
-        m_initializedAvailableExtensions = false;
-    }
-
-    initializeExtensions();
-    return m_enabledExtensions.contains(mappedName);
-}
-
-bool GraphicsContext3DPrivate::isExtensionEnabled(const String& name)
-{
-    initializeExtensions();
-    String mappedName = mapExtensionName(name);
-    return m_enabledExtensions.contains(mappedName);
-}
-
-
-bool GraphicsContext3DPrivate::isResourceSafe()
-{
-    if (m_resourceSafety == ResourceSafetyUnknown)
-        m_resourceSafety = getExtensions()->isEnabled("GL_CHROMIUM_resource_safe") ? ResourceSafe : ResourceUnsafe;
-    return m_resourceSafety == ResourceSafe;
-}
-
-} // namespace WebCore