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cc/CCDirectRenderer.cpp

Index: cc/CCDirectRenderer.cpp
diff --git a/cc/CCDirectRenderer.cpp b/cc/CCDirectRenderer.cpp
deleted file mode 100644
index 23fa1d31790c50b77d739621151e23de6bdfdc3d..0000000000000000000000000000000000000000
--- a/cc/CCDirectRenderer.cpp
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-// Copyright 2012 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 "config.h"
-
-#include "CCDirectRenderer.h"
-
-#include "CCMathUtil.h"
-#include <public/WebTransformationMatrix.h>
-#include <vector>
-
-using WebKit::WebTransformationMatrix;
-
-static WebTransformationMatrix orthoProjectionMatrix(float left, float right, float bottom, float top)
-{
-    // Use the standard formula to map the clipping frustum to the cube from
-    // [-1, -1, -1] to [1, 1, 1].
-    float deltaX = right - left;
-    float deltaY = top - bottom;
-    WebTransformationMatrix proj;
-    if (!deltaX || !deltaY)
-        return proj;
-    proj.setM11(2.0f / deltaX);
-    proj.setM41(-(right + left) / deltaX);
-    proj.setM22(2.0f / deltaY);
-    proj.setM42(-(top + bottom) / deltaY);
-
-    // Z component of vertices is always set to zero as we don't use the depth buffer
-    // while drawing.
-    proj.setM33(0);
-
-    return proj;
-}
-
-static WebTransformationMatrix windowMatrix(int x, int y, int width, int height)
-{
-    WebTransformationMatrix canvas;
-
-    // Map to window position and scale up to pixel coordinates.
-    canvas.translate3d(x, y, 0);
-    canvas.scale3d(width, height, 0);
-
-    // Map from ([-1, -1] to [1, 1]) -> ([0, 0] to [1, 1])
-    canvas.translate3d(0.5, 0.5, 0.5);
-    canvas.scale3d(0.5, 0.5, 0.5);
-
-    return canvas;
-}
-
-namespace cc {
-
-CCDirectRenderer::DrawingFrame::DrawingFrame()
-    : rootRenderPass(0)
-    , currentRenderPass(0)
-    , currentTexture(0)
-    , flippedY(false)
-{
-}
-
-CCDirectRenderer::DrawingFrame::~DrawingFrame()
-{
-}
-
-//
-// static
-FloatRect CCDirectRenderer::quadVertexRect()
-{
-    return FloatRect(-0.5, -0.5, 1, 1);
-}
-
-// static
-void CCDirectRenderer::quadRectTransform(WebKit::WebTransformationMatrix* quadRectTransform, const WebKit::WebTransformationMatrix& quadTransform, const FloatRect& quadRect)
-{
-    *quadRectTransform = quadTransform;
-    quadRectTransform->translate(0.5 * quadRect.width() + quadRect.x(), 0.5 * quadRect.height() + quadRect.y());
-    quadRectTransform->scaleNonUniform(quadRect.width(), quadRect.height());
-}
-
-// static
-void CCDirectRenderer::initializeMatrices(DrawingFrame& frame, const IntRect& drawRect, bool flipY)
-{
-    if (flipY)
-        frame.projectionMatrix = orthoProjectionMatrix(drawRect.x(), drawRect.maxX(), drawRect.maxY(), drawRect.y());
-    else
-        frame.projectionMatrix = orthoProjectionMatrix(drawRect.x(), drawRect.maxX(), drawRect.y(), drawRect.maxY());
-    frame.windowMatrix = windowMatrix(0, 0, drawRect.width(), drawRect.height());
-    frame.flippedY = flipY;
-}
-
-// static
-IntRect CCDirectRenderer::moveScissorToWindowSpace(const DrawingFrame& frame, FloatRect scissorRect)
-{
-    IntRect scissorRectInCanvasSpace = enclosingIntRect(scissorRect);
-    // The scissor coordinates must be supplied in viewport space so we need to offset
-    // by the relative position of the top left corner of the current render pass.
-    IntRect framebufferOutputRect = frame.currentRenderPass->outputRect();
-    scissorRectInCanvasSpace.setX(scissorRectInCanvasSpace.x() - framebufferOutputRect.x());
-    if (frame.flippedY && !frame.currentTexture)
-        scissorRectInCanvasSpace.setY(framebufferOutputRect.height() - (scissorRectInCanvasSpace.maxY() - framebufferOutputRect.y()));
-    else
-        scissorRectInCanvasSpace.setY(scissorRectInCanvasSpace.y() - framebufferOutputRect.y());
-    return scissorRectInCanvasSpace;
-}
-
-CCDirectRenderer::CCDirectRenderer(CCRendererClient* client, CCResourceProvider* resourceProvider)
-    : CCRenderer(client)
-    , m_resourceProvider(resourceProvider)
-{
-}
-
-CCDirectRenderer::~CCDirectRenderer()
-{
-}
-
-void CCDirectRenderer::decideRenderPassAllocationsForFrame(const CCRenderPassList& renderPassesInDrawOrder)
-{
-    base::hash_map<CCRenderPass::Id, const CCRenderPass*> renderPassesInFrame;
-    for (size_t i = 0; i < renderPassesInDrawOrder.size(); ++i)
-        renderPassesInFrame.insert(std::pair<CCRenderPass::Id, const CCRenderPass*>(renderPassesInDrawOrder[i]->id(), renderPassesInDrawOrder[i]));
-
-    std::vector<CCRenderPass::Id> passesToDelete;
-    ScopedPtrHashMap<CCRenderPass::Id, CachedTexture>::const_iterator passIterator;
-    for (passIterator = m_renderPassTextures.begin(); passIterator != m_renderPassTextures.end(); ++passIterator) {
-        base::hash_map<CCRenderPass::Id, const CCRenderPass*>::const_iterator it = renderPassesInFrame.find(passIterator->first);
-        if (it == renderPassesInFrame.end()) {
-            passesToDelete.push_back(passIterator->first);
-            continue;
-        }
-
-        const CCRenderPass* renderPassInFrame = it->second;
-        const IntSize& requiredSize = renderPassTextureSize(renderPassInFrame);
-        GC3Denum requiredFormat = renderPassTextureFormat(renderPassInFrame);
-        CachedTexture* texture = passIterator->second;
-        ASSERT(texture);
-
-        if (texture->id() && (texture->size() != requiredSize || texture->format() != requiredFormat))
-            texture->free();
-    }
-
-    // Delete RenderPass textures from the previous frame that will not be used again.
-    for (size_t i = 0; i < passesToDelete.size(); ++i)
-        m_renderPassTextures.erase(passesToDelete[i]);
-
-    for (size_t i = 0; i < renderPassesInDrawOrder.size(); ++i) {
-        if (!m_renderPassTextures.contains(renderPassesInDrawOrder[i]->id())) {
-          scoped_ptr<CachedTexture> texture = CachedTexture::create(m_resourceProvider);
-            m_renderPassTextures.set(renderPassesInDrawOrder[i]->id(), texture.Pass());
-        }
-    }
-}
-
-void CCDirectRenderer::drawFrame(const CCRenderPassList& renderPassesInDrawOrder, const CCRenderPassIdHashMap& renderPassesById)
-{
-    const CCRenderPass* rootRenderPass = renderPassesInDrawOrder.back();
-    ASSERT(rootRenderPass);
-
-    DrawingFrame frame;
-    frame.renderPassesById = &renderPassesById;
-    frame.rootRenderPass = rootRenderPass;
-    frame.rootDamageRect = capabilities().usingPartialSwap ? rootRenderPass->damageRect() : rootRenderPass->outputRect();
-    frame.rootDamageRect.intersect(IntRect(IntPoint::zero(), viewportSize()));
-
-    beginDrawingFrame(frame);
-    for (size_t i = 0; i < renderPassesInDrawOrder.size(); ++i)
-        drawRenderPass(frame, renderPassesInDrawOrder[i]);
-    finishDrawingFrame(frame);
-}
-
-void CCDirectRenderer::drawRenderPass(DrawingFrame& frame, const CCRenderPass* renderPass)
-{
-    if (!useRenderPass(frame, renderPass))
-        return;
-
-    frame.scissorRectInRenderPassSpace = frame.currentRenderPass->outputRect();
-    if (frame.rootDamageRect != frame.rootRenderPass->outputRect()) {
-        WebTransformationMatrix inverseTransformToRoot = frame.currentRenderPass->transformToRootTarget().inverse();
-        frame.scissorRectInRenderPassSpace.intersect(CCMathUtil::projectClippedRect(inverseTransformToRoot, frame.rootDamageRect));
-    }
-
-    enableScissorTestRect(moveScissorToWindowSpace(frame, frame.scissorRectInRenderPassSpace));
-    clearFramebuffer(frame);
-
-    const CCQuadList& quadList = renderPass->quadList();
-    for (CCQuadList::constBackToFrontIterator it = quadList.backToFrontBegin(); it != quadList.backToFrontEnd(); ++it) {
-        FloatRect quadScissorRect = frame.scissorRectInRenderPassSpace;
-        quadScissorRect.intersect((*it)->clippedRectInTarget());
-        if (!quadScissorRect.isEmpty()) {
-            enableScissorTestRect(moveScissorToWindowSpace(frame, quadScissorRect));
-            drawQuad(frame, *it);
-        }
-    }
-
-    CachedTexture* texture = m_renderPassTextures.get(renderPass->id());
-    if (texture)
-        texture->setIsComplete(!renderPass->hasOcclusionFromOutsideTargetSurface());
-}
-
-bool CCDirectRenderer::useRenderPass(DrawingFrame& frame, const CCRenderPass* renderPass)
-{
-    frame.currentRenderPass = renderPass;
-    frame.currentTexture = 0;
-
-    if (renderPass == frame.rootRenderPass) {
-        bindFramebufferToOutputSurface(frame);
-        initializeMatrices(frame, renderPass->outputRect(), flippedFramebuffer());
-        setDrawViewportSize(renderPass->outputRect().size());
-        return true;
-    }
-
-    CachedTexture* texture = m_renderPassTextures.get(renderPass->id());
-    ASSERT(texture);
-    if (!texture->id() && !texture->allocate(CCRenderer::ImplPool, renderPassTextureSize(renderPass), renderPassTextureFormat(renderPass), CCResourceProvider::TextureUsageFramebuffer))
-        return false;
-
-    return bindFramebufferToTexture(frame, texture, renderPass->outputRect());
-}
-
-bool CCDirectRenderer::haveCachedResourcesForRenderPassId(CCRenderPass::Id id) const
-{
-    CachedTexture* texture = m_renderPassTextures.get(id);
-    return texture && texture->id() && texture->isComplete();
-}
-
-// static
-IntSize CCDirectRenderer::renderPassTextureSize(const CCRenderPass* pass)
-{
-    return pass->outputRect().size();
-}
-
-// static
-GC3Denum CCDirectRenderer::renderPassTextureFormat(const CCRenderPass*)
-{
-    return GraphicsContext3D::RGBA;
-}
-
-}