5 files changed, 7 insertions, 652 deletions

diff --git a/Source/WebCore/platform/graphics/gpu/DrawingBuffer.cpp b/Source/WebCore/platform/graphics/gpu/DrawingBuffer.cpp
deleted file mode 100644
index 2b96cb594..000000000
--- a/Source/WebCore/platform/graphics/gpu/DrawingBuffer.cpp
+++ /dev/null
@@ -1,466 +0,0 @@
-/*
- * Copyright (c) 2010, 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"
-
-#if ENABLE(ACCELERATED_2D_CANVAS) || USE(3D_GRAPHICS)
-
-#include "DrawingBuffer.h"
-
-#include "Extensions3D.h"
-#include "GraphicsContext3D.h"
-
-namespace WebCore {
-
-#if PLATFORM(WIN) || USE(CAIRO)
-DrawingBuffer::DrawingBuffer(GraphicsContext3D* context, const IntSize& size, bool multisampleExtensionSupported, bool packedDepthStencilExtensionSupported, PreserveDrawingBuffer preserveDrawingBuffer, AlphaRequirement alpha)
-    : m_preserveDrawingBuffer(preserveDrawingBuffer)
-    , m_alpha(alpha)
-    , m_scissorEnabled(false)
-    , m_texture2DBinding(0)
-    , m_framebufferBinding(0)
-    , m_activeTextureUnit(GraphicsContext3D::TEXTURE0)
-    , m_context(context)
-    , m_size(-1, -1)
-    , m_multisampleExtensionSupported(multisampleExtensionSupported)
-    , m_packedDepthStencilExtensionSupported(packedDepthStencilExtensionSupported)
-    , m_fbo(context->createFramebuffer())
-    , m_colorBuffer(0)
-    , m_frontColorBuffer(0)
-    , m_separateFrontTexture(false)
-    , m_depthStencilBuffer(0)
-    , m_depthBuffer(0)
-    , m_stencilBuffer(0)
-    , m_multisampleFBO(0)
-    , m_multisampleColorBuffer(0)
-{
-    ASSERT(m_fbo);
-    if (!m_fbo) {
-        clear();
-        return;
-    }
-
-    // create a texture to render into
-    m_colorBuffer = context->createTexture();
-    context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_colorBuffer);
-    context->texParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR);
-    context->texParameterf(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR);
-    context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE);
-    context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE);
-    context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0);
-
-    createSecondaryBuffers();
-    reset(size);
-}
-
-DrawingBuffer::~DrawingBuffer()
-{
-    clear();
-}
-#endif
-
-// Global resource ceiling (expressed in terms of pixels) for DrawingBuffer creation and resize.
-// When this limit is set, DrawingBuffer::create() and DrawingBuffer::reset() calls that would
-// exceed the global cap will instead clear the buffer.
-static int s_maximumResourceUsePixels = 0;
-static int s_currentResourceUsePixels = 0;
-static const float s_resourceAdjustedRatio = 0.5;
-
-PassRefPtr<DrawingBuffer> DrawingBuffer::create(GraphicsContext3D* context, const IntSize& size, PreserveDrawingBuffer preserve, AlphaRequirement alpha)
-{
-    Extensions3D* extensions = context->getExtensions();
-    bool multisampleSupported = extensions->maySupportMultisampling()
-        && extensions->supports("GL_ANGLE_framebuffer_blit")
-        && extensions->supports("GL_ANGLE_framebuffer_multisample")
-        && extensions->supports("GL_OES_rgb8_rgba8");
-    if (multisampleSupported) {
-        extensions->ensureEnabled("GL_ANGLE_framebuffer_blit");
-        extensions->ensureEnabled("GL_ANGLE_framebuffer_multisample");
-        extensions->ensureEnabled("GL_OES_rgb8_rgba8");
-    }
-    bool packedDepthStencilSupported = extensions->supports("GL_OES_packed_depth_stencil");
-    if (packedDepthStencilSupported)
-        extensions->ensureEnabled("GL_OES_packed_depth_stencil");
-    RefPtr<DrawingBuffer> drawingBuffer = adoptRef(new DrawingBuffer(context, size, multisampleSupported, packedDepthStencilSupported, preserve, alpha));
-    return (drawingBuffer->m_context) ? drawingBuffer.release() : 0;
-}
-
-void DrawingBuffer::clear()
-{
-    if (!m_context)
-        return;
-
-    m_context->makeContextCurrent();
-
-    if (!m_size.isEmpty()) {
-        s_currentResourceUsePixels -= m_size.width() * m_size.height();
-        m_size = IntSize();
-    }
-
-    if (m_colorBuffer) {
-        m_context->deleteTexture(m_colorBuffer);
-        m_colorBuffer = 0;
-    }
-
-    if (m_frontColorBuffer) {
-        m_context->deleteTexture(m_frontColorBuffer);
-        m_frontColorBuffer = 0;
-    }
-
-    if (m_multisampleColorBuffer) {
-        m_context->deleteRenderbuffer(m_multisampleColorBuffer);
-        m_multisampleColorBuffer = 0;
-    }
-
-    if (m_depthStencilBuffer) {
-        m_context->deleteRenderbuffer(m_depthStencilBuffer);
-        m_depthStencilBuffer = 0;
-    }
-
-    if (m_depthBuffer) {
-        m_context->deleteRenderbuffer(m_depthBuffer);
-        m_depthBuffer = 0;
-    }
-
-    if (m_stencilBuffer) {
-        m_context->deleteRenderbuffer(m_stencilBuffer);
-        m_stencilBuffer = 0;
-    }
-
-    if (m_multisampleFBO) {
-        m_context->deleteFramebuffer(m_multisampleFBO);
-        m_multisampleFBO = 0;
-    }
-
-    if (m_fbo) {
-        m_context->deleteFramebuffer(m_fbo);
-        m_fbo = 0;
-    }
-}
-
-void DrawingBuffer::createSecondaryBuffers()
-{
-    // create a multisample FBO
-    if (multisample()) {
-        m_multisampleFBO = m_context->createFramebuffer();
-        m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
-        m_multisampleColorBuffer = m_context->createRenderbuffer();
-    }
-}
-
-void DrawingBuffer::resizeDepthStencil(int sampleCount)
-{
-    const GraphicsContext3D::Attributes& attributes = m_context->getContextAttributes();
-    if (attributes.depth && attributes.stencil && m_packedDepthStencilExtensionSupported) {
-        if (!m_depthStencilBuffer)
-            m_depthStencilBuffer = m_context->createRenderbuffer();
-        m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_depthStencilBuffer);
-        if (multisample())
-            m_context->getExtensions()->renderbufferStorageMultisample(GraphicsContext3D::RENDERBUFFER, sampleCount, Extensions3D::DEPTH24_STENCIL8, m_size.width(), m_size.height());
-        else
-            m_context->renderbufferStorage(GraphicsContext3D::RENDERBUFFER, Extensions3D::DEPTH24_STENCIL8, m_size.width(), m_size.height());
-        m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_depthStencilBuffer);
-        m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_depthStencilBuffer);
-    } else {
-        if (attributes.depth) {
-            if (!m_depthBuffer)
-                m_depthBuffer = m_context->createRenderbuffer();
-            m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_depthBuffer);
-            if (multisample())
-                m_context->getExtensions()->renderbufferStorageMultisample(GraphicsContext3D::RENDERBUFFER, sampleCount, GraphicsContext3D::DEPTH_COMPONENT16, m_size.width(), m_size.height());
-            else
-                m_context->renderbufferStorage(GraphicsContext3D::RENDERBUFFER, GraphicsContext3D::DEPTH_COMPONENT16, m_size.width(), m_size.height());
-            m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::DEPTH_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_depthBuffer);
-        }
-        if (attributes.stencil) {
-            if (!m_stencilBuffer)
-                m_stencilBuffer = m_context->createRenderbuffer();
-            m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_stencilBuffer);
-            if (multisample())
-                m_context->getExtensions()->renderbufferStorageMultisample(GraphicsContext3D::RENDERBUFFER, sampleCount, GraphicsContext3D::STENCIL_INDEX8, m_size.width(), m_size.height());
-            else 
-                m_context->renderbufferStorage(GraphicsContext3D::RENDERBUFFER, GraphicsContext3D::STENCIL_INDEX8, m_size.width(), m_size.height());
-            m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::STENCIL_ATTACHMENT, GraphicsContext3D::RENDERBUFFER, m_stencilBuffer);
-        }
-    }
-    m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, 0);
-}
-
-void DrawingBuffer::clearFramebuffers(GC3Dbitfield clearMask)
-{
-    m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO ? m_multisampleFBO : m_fbo);
-
-    m_context->clear(clearMask);
-
-    // The multisample fbo was just cleared, but we also need to clear the non-multisampled buffer too.
-    if (m_multisampleFBO) {
-        m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
-        m_context->clear(GraphicsContext3D::COLOR_BUFFER_BIT);
-        m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
-    }
-}
-
-// Only way to ensure that we're not getting a bad framebuffer on some AMD/OSX devices.
-// FIXME: This can be removed once renderbufferStorageMultisample starts reporting GL_OUT_OF_MEMORY properly.
-bool DrawingBuffer::checkBufferIntegrity()
-{
-    if (!m_multisampleFBO)
-        return true;
-
-    if (m_scissorEnabled)
-        m_context->disable(GraphicsContext3D::SCISSOR_TEST);
-
-    m_context->colorMask(true, true, true, true);
-
-    m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
-    m_context->clearColor(1.0f, 0.0f, 1.0f, 1.0f);
-    m_context->clear(GraphicsContext3D::COLOR_BUFFER_BIT);
-
-    commit(0, 0, 1, 1);
-
-    unsigned char pixel[4] = {0, 0, 0, 0};
-    m_context->readPixels(0, 0, 1, 1, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, &pixel);
-
-    if (m_scissorEnabled)
-        m_context->enable(GraphicsContext3D::SCISSOR_TEST);
-
-    return (pixel[0] == 0xFF && pixel[1] == 0x00 && pixel[2] == 0xFF && pixel[3] == 0xFF);
-}
-
-bool DrawingBuffer::reset(const IntSize& newSize)
-{
-    if (!m_context)
-        return false;
-
-    m_context->makeContextCurrent();
-
-    int maxTextureSize = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_TEXTURE_SIZE, &maxTextureSize);
-    if (newSize.height() > maxTextureSize || newSize.width() > maxTextureSize) {
-        clear();
-        return false;
-    }
-
-    int pixelDelta = newSize.width() * newSize.height();
-    int oldSize = 0;
-    if (!m_size.isEmpty()) {
-        oldSize = m_size.width() * m_size.height();
-        pixelDelta -= oldSize;
-    }
-
-    IntSize adjustedSize = newSize;
-    if (s_maximumResourceUsePixels) {
-        while ((s_currentResourceUsePixels + pixelDelta) > s_maximumResourceUsePixels) {
-            adjustedSize.scale(s_resourceAdjustedRatio);
-            if (adjustedSize.isEmpty()) {
-                clear();
-                return false;
-            }
-            pixelDelta = adjustedSize.width() * adjustedSize.height();
-            pixelDelta -= oldSize;
-        }
-     }
-
-    const GraphicsContext3D::Attributes& attributes = m_context->getContextAttributes();
-
-    if (adjustedSize != m_size) {
-
-        unsigned internalColorFormat, colorFormat, internalRenderbufferFormat;
-        if (attributes.alpha) {
-            internalColorFormat = GraphicsContext3D::RGBA;
-            colorFormat = GraphicsContext3D::RGBA;
-            internalRenderbufferFormat = Extensions3D::RGBA8_OES;
-        } else {
-            internalColorFormat = GraphicsContext3D::RGB;
-            colorFormat = GraphicsContext3D::RGB;
-            internalRenderbufferFormat = Extensions3D::RGB8_OES;
-        }
-
-        do {
-            m_size = adjustedSize;
-            // resize multisample FBO
-            if (multisample()) {
-                int maxSampleCount = 0;
-
-                m_context->getIntegerv(Extensions3D::MAX_SAMPLES, &maxSampleCount);
-                int sampleCount = std::min(4, maxSampleCount);
-
-                m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO);
-
-                m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, m_multisampleColorBuffer);
-                m_context->getExtensions()->renderbufferStorageMultisample(GraphicsContext3D::RENDERBUFFER, sampleCount, internalRenderbufferFormat, m_size.width(), m_size.height());
-
-                if (m_context->getError() == GraphicsContext3D::OUT_OF_MEMORY) {
-                    adjustedSize.scale(s_resourceAdjustedRatio);
-                    continue;
-                }
-
-                m_context->framebufferRenderbuffer(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::RENDERBUFFER, m_multisampleColorBuffer);
-                resizeDepthStencil(sampleCount);
-                if (m_context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
-                    adjustedSize.scale(s_resourceAdjustedRatio);
-                    continue;
-                }
-            }
-
-            // resize regular FBO
-            m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
-
-            m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_colorBuffer);
-            m_context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, internalColorFormat, m_size.width(), m_size.height(), 0, colorFormat, GraphicsContext3D::UNSIGNED_BYTE, 0);
-
-            m_context->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::TEXTURE_2D, m_colorBuffer, 0);
-
-            // resize the front color buffer
-            if (m_separateFrontTexture) {
-                m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_frontColorBuffer);
-                m_context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, internalColorFormat, m_size.width(), m_size.height(), 0, colorFormat, GraphicsContext3D::UNSIGNED_BYTE, 0);
-            }
-
-            m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0);
-
-            if (!multisample())
-                resizeDepthStencil(0);
-            if (m_context->checkFramebufferStatus(GraphicsContext3D::FRAMEBUFFER) != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
-                adjustedSize.scale(s_resourceAdjustedRatio);
-                continue;
-            }
-
-#if OS(DARWIN)
-            // FIXME: This can be removed once renderbufferStorageMultisample starts reporting GL_OUT_OF_MEMORY properly on OSX.
-            if (!checkBufferIntegrity()) {
-                adjustedSize.scale(s_resourceAdjustedRatio);
-                continue;
-            }
-#endif
-
-            break;
-
-        } while (!adjustedSize.isEmpty());
-
-        pixelDelta = m_size.width() * m_size.height();
-        pixelDelta -= oldSize;
-        s_currentResourceUsePixels += pixelDelta;
-
-        if (!newSize.isEmpty() && adjustedSize.isEmpty()) {
-            clear();
-            return false;
-        }
-    }
-
-    m_context->disable(GraphicsContext3D::SCISSOR_TEST);
-    m_context->clearColor(0, 0, 0, 0);
-    m_context->colorMask(true, true, true, true);
-
-    GC3Dbitfield clearMask = GraphicsContext3D::COLOR_BUFFER_BIT;
-    if (attributes.depth) {
-        m_context->clearDepth(1.0f);
-        clearMask |= GraphicsContext3D::DEPTH_BUFFER_BIT;
-        m_context->depthMask(true);
-    }
-    if (attributes.stencil) {
-        m_context->clearStencil(0);
-        clearMask |= GraphicsContext3D::STENCIL_BUFFER_BIT;
-        m_context->stencilMaskSeparate(GraphicsContext3D::FRONT, 0xFFFFFFFF);
-    }
-
-    clearFramebuffers(clearMask);
-
-    return true;
-}
-
-void DrawingBuffer::commit(long x, long y, long width, long height)
-{
-    if (!m_context)
-        return;
-
-    if (width < 0)
-        width = m_size.width();
-    if (height < 0)
-        height = m_size.height();
-
-    m_context->makeContextCurrent();
-
-    if (m_multisampleFBO) {
-        m_context->bindFramebuffer(Extensions3D::READ_FRAMEBUFFER, m_multisampleFBO);
-        m_context->bindFramebuffer(Extensions3D::DRAW_FRAMEBUFFER, m_fbo);
-
-        if (m_scissorEnabled)
-            m_context->disable(GraphicsContext3D::SCISSOR_TEST);
-
-        // Use NEAREST, because there is no scale performed during the blit.
-        m_context->getExtensions()->blitFramebuffer(x, y, width, height, x, y, width, height, GraphicsContext3D::COLOR_BUFFER_BIT, GraphicsContext3D::NEAREST);
-
-        if (m_scissorEnabled)
-            m_context->enable(GraphicsContext3D::SCISSOR_TEST);
-    }
-
-    m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_fbo);
-}
-
-void DrawingBuffer::restoreFramebufferBinding()
-{
-    if (!m_context || !m_framebufferBinding)
-        return;
-
-    m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_framebufferBinding);
-}
-
-bool DrawingBuffer::multisample() const
-{
-    return m_context && m_context->getContextAttributes().antialias && m_multisampleExtensionSupported;
-}
-
-void DrawingBuffer::discardResources()
-{
-    m_colorBuffer = 0;
-    m_frontColorBuffer = 0;
-    m_multisampleColorBuffer = 0;
-
-    m_depthStencilBuffer = 0;
-    m_depthBuffer = 0;
-
-    m_stencilBuffer = 0;
-
-    m_multisampleFBO = 0;
-    m_fbo = 0;
-}
-
-void DrawingBuffer::bind()
-{
-    if (!m_context)
-        return;
-
-    m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_multisampleFBO ? m_multisampleFBO : m_fbo);
-}
-
-} // namespace WebCore
-
-#endif
diff --git a/Source/WebCore/platform/graphics/gpu/DrawingBuffer.h b/Source/WebCore/platform/graphics/gpu/DrawingBuffer.h
deleted file mode 100644
index e234e420c..000000000
--- a/Source/WebCore/platform/graphics/gpu/DrawingBuffer.h
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- * Copyright (c) 2010, 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.
- */
-
-#ifndef DrawingBuffer_h
-#define DrawingBuffer_h
-
-#include "GraphicsContext3D.h"
-#include "GraphicsTypes3D.h"
-#include "IntSize.h"
-#include "PlatformLayer.h"
-
-#include <wtf/Noncopyable.h>
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
-#if PLATFORM(MAC)
-#include <wtf/RetainPtr.h>
-#endif
-
-namespace WebCore {
-class GraphicsContext3D;
-
-// Manages a rendering target (framebuffer + attachment) for a canvas.  Can publish its rendering
-// results to a PlatformLayer for compositing.
-class DrawingBuffer : public RefCounted<DrawingBuffer> {
-public:
-    enum PreserveDrawingBuffer {
-        Preserve,
-        Discard
-    };
-
-    enum AlphaRequirement {
-        Alpha,
-        Opaque
-    };
-
-    static PassRefPtr<DrawingBuffer> create(GraphicsContext3D*, const IntSize&, PreserveDrawingBuffer, AlphaRequirement);
-    friend class GraphicsContext3D;
-
-    ~DrawingBuffer();
-
-    // Issues a glClear() on all framebuffers associated with this DrawingBuffer. The caller is responsible for
-    // making the context current and setting the clear values and masks. Modifies the framebuffer binding.
-    void clearFramebuffers(GC3Dbitfield clearMask);
-
-    // Returns true if the buffer was successfully resized.
-    bool reset(const IntSize&);
-    void bind();
-    IntSize size() const { return m_size; }
-    Platform3DObject colorBuffer() const { return m_colorBuffer; }
-
-    // Clear all resources from this object, as well as context. Called when context is destroyed
-    // to prevent invalid accesses to the resources.
-    void clear();
-
-    // Create the depth/stencil and multisample buffers, if needed.
-    void createSecondaryBuffers();
-    
-    void resizeDepthStencil(int sampleCount);
-
-    // Copies the multisample color buffer to the normal color buffer and leaves m_fbo bound
-    void commit(long x = 0, long y = 0, long width = -1, long height = -1);
-
-    // commit should copy the full multisample buffer, and not respect the
-    // current scissor bounds. Track the state of the scissor test so that it
-    // can be disabled during calls to commit.
-    void setScissorEnabled(bool scissorEnabled) { m_scissorEnabled = scissorEnabled; }
-
-    // The DrawingBuffer needs to track the texture bound to texture unit 0.
-    // The bound texture is tracked to avoid costly queries during rendering.
-    void setTexture2DBinding(Platform3DObject texture) { m_texture2DBinding = texture; }
-
-    // The DrawingBuffer needs to track the currently bound framebuffer so it
-    // restore the binding when needed.
-    void setFramebufferBinding(Platform3DObject fbo) { m_framebufferBinding = fbo; }
-
-    // Bind to the m_framebufferBinding if it's not 0.
-    void restoreFramebufferBinding();
-
-    // Track the currently active texture unit. Texture unit 0 is used as host for a scratch
-    // texture.
-    void setActiveTextureUnit(GC3Dint textureUnit) { m_activeTextureUnit = textureUnit; }
-
-    bool multisample() const;
-
-    Platform3DObject framebuffer() const;
-
-    // Immediately releases ownership of all resources. Call upon loss of the
-    // graphics context to prevent freeing invalid resources.
-    void discardResources();
-
-    void markContentsChanged() { m_contentsChanged = true; }
-
-#if USE(ACCELERATED_COMPOSITING)
-    PlatformLayer* platformLayer();
-    unsigned frontColorBuffer() const;
-    void paintCompositedResultsToCanvas(ImageBuffer*);
-#endif
-
-    GraphicsContext3D* graphicsContext3D() const { return m_context.get(); }
-
-private:
-    DrawingBuffer(GraphicsContext3D*, const IntSize&, bool multisampleExtensionSupported,
-                  bool packedDepthStencilExtensionSupported, PreserveDrawingBuffer, AlphaRequirement);
-
-    void initialize(const IntSize&);
-
-    bool checkBufferIntegrity();
-
-    PreserveDrawingBuffer m_preserveDrawingBuffer;
-    AlphaRequirement m_alpha;
-    bool m_scissorEnabled;
-    Platform3DObject m_texture2DBinding;
-    Platform3DObject m_framebufferBinding;
-    GC3Denum m_activeTextureUnit;
-
-    RefPtr<GraphicsContext3D> m_context;
-    IntSize m_size;
-    bool m_multisampleExtensionSupported;
-    bool m_packedDepthStencilExtensionSupported;
-    Platform3DObject m_fbo;
-    Platform3DObject m_colorBuffer;
-    Platform3DObject m_frontColorBuffer;
-    bool m_separateFrontTexture;
-
-    // This is used when we have OES_packed_depth_stencil.
-    Platform3DObject m_depthStencilBuffer;
-
-    // These are used when we don't.
-    Platform3DObject m_depthBuffer;
-    Platform3DObject m_stencilBuffer;
-
-    // For multisampling
-    Platform3DObject m_multisampleFBO;
-    Platform3DObject m_multisampleColorBuffer;
-
-    // True if our contents have been modified since the last presentation of this buffer.
-    bool m_contentsChanged;
-
-#if PLATFORM(MAC)
-    RetainPtr<WebGLLayer> m_platformLayer;
-#endif
-};
-
-} // namespace WebCore
-
-#endif // DrawingBuffer_h
diff --git a/Source/WebCore/platform/graphics/gpu/Texture.cpp b/Source/WebCore/platform/graphics/gpu/Texture.cpp
index 31aaa63ee..aad13f34d 100644
--- a/Source/WebCore/platform/graphics/gpu/Texture.cpp
+++ b/Source/WebCore/platform/graphics/gpu/Texture.cpp
@@ -43,11 +43,11 @@
 
 namespace WebCore {
 
-Texture::Texture(GraphicsContext3D* context, PassOwnPtr<Vector<unsigned int>> tileTextureIds, Format format, int width, int height, int maxTextureSize)
+Texture::Texture(GraphicsContext3D* context, std::unique_ptr<Vector<unsigned>> tileTextureIds, Format format, int width, int height, int maxTextureSize)
     : m_context(context)
     , m_format(format)
     , m_tiles(IntSize(maxTextureSize, maxTextureSize), IntSize(width, height), true)
-    , m_tileTextureIds(tileTextureIds)
+    , m_tileTextureIds(WTFMove(tileTextureIds))
 {
 }
 
@@ -66,7 +66,7 @@ static void convertFormat(GraphicsContext3D* context, Texture::Format format, un
         *glType = GraphicsContext3D::UNSIGNED_BYTE;
         break;
     case Texture::BGRA8:
-        if (context->getExtensions()->supports("GL_EXT_texture_format_BGRA8888")) {
+        if (context->getExtensions().supports("GL_EXT_texture_format_BGRA8888")) {
             *glFormat = Extensions3D::BGRA_EXT;
             *glType = GraphicsContext3D::UNSIGNED_BYTE;
         } else {
@@ -94,7 +94,7 @@ PassRefPtr<Texture> Texture::create(GraphicsContext3D* context, Format format, i
         numTiles = 0;
     }
 
-    OwnPtr<Vector<unsigned int>> textureIds = adoptPtr(new Vector<unsigned int>(numTiles));
+    auto textureIds = std::make_unique<Vector<unsigned>>(numTiles);
     textureIds->fill(0, numTiles);
 
     for (int i = 0; i < numTiles; i++) {
@@ -120,7 +120,7 @@ PassRefPtr<Texture> Texture::create(GraphicsContext3D* context, Format format, i
                                         tileBoundsWithBorder.height(),
                                         0, glFormat, glType);
     }
-    return adoptRef(new Texture(context, textureIds.release(), format, width, height, maxTextureSize));
+    return adoptRef(new Texture(context, WTFMove(textureIds), format, width, height, maxTextureSize));
 }
 
 template <bool swizzle>
diff --git a/Source/WebCore/platform/graphics/gpu/Texture.h b/Source/WebCore/platform/graphics/gpu/Texture.h
index 6e93b91c2..3aa55f821 100644
--- a/Source/WebCore/platform/graphics/gpu/Texture.h
+++ b/Source/WebCore/platform/graphics/gpu/Texture.h
@@ -32,8 +32,6 @@
 #define Texture_h
 
 #include "TilingData.h"
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
 #include <wtf/RefCounted.h>
 #include <wtf/RefPtr.h>
 #include <wtf/Vector.h>
@@ -54,11 +52,11 @@ public:
     Format format() const { return m_format; }
     const TilingData& tiles() const { return m_tiles; }
 private:
-    Texture(GraphicsContext3D*, PassOwnPtr<Vector<unsigned int>> tileTextureIds, Format format, int width, int height, int maxTextureSize);
+    Texture(GraphicsContext3D*, std::unique_ptr<Vector<unsigned>> tileTextureIds, Format, int width, int height, int maxTextureSize);
     GraphicsContext3D* m_context;
     Format m_format;
     TilingData m_tiles;
-    OwnPtr<Vector<unsigned int>> m_tileTextureIds;
+    std::unique_ptr<Vector<unsigned>> m_tileTextureIds;
 };
 
 }
diff --git a/Source/WebCore/platform/graphics/gpu/TilingData.cpp b/Source/WebCore/platform/graphics/gpu/TilingData.cpp
index 23df37da0..6a3d04c4d 100644
--- a/Source/WebCore/platform/graphics/gpu/TilingData.cpp
+++ b/Source/WebCore/platform/graphics/gpu/TilingData.cpp
@@ -30,8 +30,6 @@
 
 #include "config.h"
 
-#if USE(ACCELERATED_COMPOSITING) || ENABLE(ACCELERATED_2D_CANVAS)
-
 #include "TilingData.h"
 
 #include "FloatRect.h"
@@ -203,5 +201,3 @@ void TilingData::recomputeNumTiles()
 }
 
 }
-
-#endif