Initial import attempt, just to play with. Many things disabled/removed

ui/cc/cc/CCRenderSurface.cpp

Index: ui/cc/cc/CCRenderSurface.cpp
diff --git a/ui/cc/cc/CCRenderSurface.cpp b/ui/cc/cc/CCRenderSurface.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d092189b52a51c2d94c59fba01714c537ecf5fa0
--- /dev/null
+++ b/ui/cc/cc/CCRenderSurface.cpp
@@ -0,0 +1,310 @@
+/*
+ * 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"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "cc/CCRenderSurface.h"
+
+#include "GraphicsContext3D.h"
+#include "LayerRendererChromium.h"
+#include "ManagedTexture.h"
+#include "TextStream.h"
+#include "cc/CCDamageTracker.h"
+#include "cc/CCDebugBorderDrawQuad.h"
+#include "cc/CCLayerImpl.h"
+#include "cc/CCMathUtil.h"
+#include "cc/CCQuadCuller.h"
+#include "cc/CCRenderPassDrawQuad.h"
+#include "cc/CCSharedQuadState.h"
+#include <public/WebTransformationMatrix.h>
+#include <wtf/text/CString.h>
+
+using WebKit::WebTransformationMatrix;
+
+namespace WebCore {
+
+static const int debugSurfaceBorderWidth = 2;
+static const int debugSurfaceBorderAlpha = 100;
+static const int debugSurfaceBorderColorRed = 0;
+static const int debugSurfaceBorderColorGreen = 0;
+static const int debugSurfaceBorderColorBlue = 255;
+static const int debugReplicaBorderColorRed = 160;
+static const int debugReplicaBorderColorGreen = 0;
+static const int debugReplicaBorderColorBlue = 255;
+
+CCRenderSurface::CCRenderSurface(CCLayerImpl* owningLayer)
+    : m_owningLayer(owningLayer)
+    , m_surfacePropertyChanged(false)
+    , m_drawOpacity(1)
+    , m_drawOpacityIsAnimating(false)
+    , m_targetSurfaceTransformsAreAnimating(false)
+    , m_screenSpaceTransformsAreAnimating(false)
+    , m_nearestAncestorThatMovesPixels(0)
+    , m_targetRenderSurfaceLayerIndexHistory(0)
+    , m_currentLayerIndexHistory(0)
+{
+    m_damageTracker = CCDamageTracker::create();
+}
+
+CCRenderSurface::~CCRenderSurface()
+{
+}
+
+FloatRect CCRenderSurface::drawableContentRect() const
+{
+    FloatRect localContentRect(-0.5 * m_contentRect.width(), -0.5 * m_contentRect.height(),
+                               m_contentRect.width(), m_contentRect.height());
+    FloatRect drawableContentRect = m_drawTransform.mapRect(localContentRect);
+    if (hasReplica())
+        drawableContentRect.unite(m_replicaDrawTransform.mapRect(localContentRect));
+
+    return drawableContentRect;
+}
+
+bool CCRenderSurface::prepareContentsTexture(LayerRendererChromium* layerRenderer)
+{
+    // FIXME: This method should be separated into two: one to reserve an
+    // existing surface, and one to create a new one. That way we will not
+    // need to pass null layerRenderer.
+    if (layerRenderer) {
+        TextureManager* textureManager = layerRenderer->implTextureManager();
+
+        if (!m_contentsTexture)
+            m_contentsTexture = ManagedTexture::create(textureManager);
+    }
+
+    if (!m_contentsTexture)
+        return false;
+
+    if (m_contentsTexture->isReserved())
+        return true;
+
+    if (!m_contentsTexture->reserve(m_contentRect.size(), GL_RGBA))
+        return false;
+
+    return true;
+}
+
+void CCRenderSurface::releaseContentsTexture()
+{
+    if (!m_contentsTexture || !m_contentsTexture->isReserved())
+        return;
+    m_contentsTexture->unreserve();
+}
+
+bool CCRenderSurface::hasValidContentsTexture() const
+{
+    return m_contentsTexture && m_contentsTexture->isReserved() && m_contentsTexture->isValid(m_contentRect.size(), GL_RGBA);
+}
+
+bool CCRenderSurface::hasCachedContentsTexture() const
+{
+    return m_contentsTexture && m_contentsTexture->isValid(m_contentRect.size(), GL_RGBA);
+}
+
+bool CCRenderSurface::prepareBackgroundTexture(LayerRendererChromium* layerRenderer)
+{
+    TextureManager* textureManager = layerRenderer->implTextureManager();
+
+    if (!m_backgroundTexture)
+        m_backgroundTexture = ManagedTexture::create(textureManager);
+
+    if (m_backgroundTexture->isReserved())
+        return true;
+
+    if (!m_backgroundTexture->reserve(m_contentRect.size(), GL_RGBA))
+        return false;
+
+    return true;
+}
+
+void CCRenderSurface::releaseBackgroundTexture()
+{
+    if (!m_backgroundTexture || !m_backgroundTexture->isReserved())
+        return;
+    m_backgroundTexture->unreserve();
+}
+
+bool CCRenderSurface::hasValidBackgroundTexture() const
+{
+    return m_backgroundTexture && m_backgroundTexture->isReserved() && m_backgroundTexture->isValid(m_contentRect.size(), GL_RGBA);
+}
+
+String CCRenderSurface::name() const
+{
+    return String::format("RenderSurface(id=%i,owner=%s)", m_owningLayer->id(), m_owningLayer->debugName().utf8().data());
+}
+
+static void writeIndent(TextStream& ts, int indent)
+{
+    for (int i = 0; i != indent; ++i)
+        ts << "  ";
+}
+
+void CCRenderSurface::dumpSurface(TextStream& ts, int indent) const
+{
+    writeIndent(ts, indent);
+    ts << name() << "\n";
+
+    writeIndent(ts, indent+1);
+    ts << "contentRect: (" << m_contentRect.x() << ", " << m_contentRect.y() << ", " << m_contentRect.width() << ", " << m_contentRect.height() << "\n";
+
+    writeIndent(ts, indent+1);
+    ts << "drawTransform: ";
+    ts << m_drawTransform.m11() << ", " << m_drawTransform.m12() << ", " << m_drawTransform.m13() << ", " << m_drawTransform.m14() << "  //  ";
+    ts << m_drawTransform.m21() << ", " << m_drawTransform.m22() << ", " << m_drawTransform.m23() << ", " << m_drawTransform.m24() << "  //  ";
+    ts << m_drawTransform.m31() << ", " << m_drawTransform.m32() << ", " << m_drawTransform.m33() << ", " << m_drawTransform.m34() << "  //  ";
+    ts << m_drawTransform.m41() << ", " << m_drawTransform.m42() << ", " << m_drawTransform.m43() << ", " << m_drawTransform.m44() << "\n";
+
+    writeIndent(ts, indent+1);
+    ts << "damageRect is pos(" << m_damageTracker->currentDamageRect().x() << "," << m_damageTracker->currentDamageRect().y() << "), ";
+    ts << "size(" << m_damageTracker->currentDamageRect().width() << "," << m_damageTracker->currentDamageRect().height() << ")\n";
+}
+
+int CCRenderSurface::owningLayerId() const
+{
+    return m_owningLayer ? m_owningLayer->id() : 0;
+}
+
+CCRenderSurface* CCRenderSurface::targetRenderSurface() const
+{
+    CCLayerImpl* parent = m_owningLayer->parent();
+    if (!parent)
+        return 0;
+    return parent->targetRenderSurface();
+}
+
+bool CCRenderSurface::hasReplica() const
+{
+    return m_owningLayer->replicaLayer();
+}
+
+bool CCRenderSurface::hasMask() const
+{
+    return m_owningLayer->maskLayer();
+}
+
+bool CCRenderSurface::replicaHasMask() const
+{
+    return hasReplica() && (m_owningLayer->maskLayer() || m_owningLayer->replicaLayer()->maskLayer());
+}
+
+void CCRenderSurface::setClipRect(const IntRect& clipRect)
+{
+    if (m_clipRect == clipRect)
+        return;
+
+    m_surfacePropertyChanged = true;
+    m_clipRect = clipRect;
+}
+
+bool CCRenderSurface::contentsChanged() const
+{
+    return !m_damageTracker->currentDamageRect().isEmpty();
+}
+
+void CCRenderSurface::setContentRect(const IntRect& contentRect)
+{
+    if (m_contentRect == contentRect)
+        return;
+
+    m_surfacePropertyChanged = true;
+    m_contentRect = contentRect;
+}
+
+bool CCRenderSurface::surfacePropertyChanged() const
+{
+    // Surface property changes are tracked as follows:
+    //
+    // - m_surfacePropertyChanged is flagged when the clipRect or contentRect change. As
+    //   of now, these are the only two properties that can be affected by descendant layers.
+    //
+    // - all other property changes come from the owning layer (or some ancestor layer
+    //   that propagates its change to the owning layer).
+    //
+    ASSERT(m_owningLayer);
+    return m_surfacePropertyChanged || m_owningLayer->layerPropertyChanged();
+}
+
+bool CCRenderSurface::surfacePropertyChangedOnlyFromDescendant() const
+{
+    return m_surfacePropertyChanged && !m_owningLayer->layerPropertyChanged();
+}
+
+PassOwnPtr<CCSharedQuadState> CCRenderSurface::createSharedQuadState() const
+{
+    bool isOpaque = false;
+    return CCSharedQuadState::create(originTransform(), drawTransform(), contentRect(), m_scissorRect, drawOpacity(), isOpaque);
+}
+
+PassOwnPtr<CCSharedQuadState> CCRenderSurface::createReplicaSharedQuadState() const
+{
+    bool isOpaque = false;
+    return CCSharedQuadState::create(replicaOriginTransform(), replicaDrawTransform(), contentRect(), m_scissorRect, drawOpacity(), isOpaque);
+}
+
+FloatRect CCRenderSurface::computeRootScissorRectInCurrentSurface(const FloatRect& rootScissorRect) const
+{
+    WebTransformationMatrix inverseScreenSpaceTransform = m_screenSpaceTransform.inverse();
+    return CCMathUtil::projectClippedRect(inverseScreenSpaceTransform, rootScissorRect);
+}
+
+void CCRenderSurface::appendQuads(CCQuadCuller& quadList, CCSharedQuadState* sharedQuadState, bool forReplica, const CCRenderPass* renderPass)
+{
+    ASSERT(!forReplica || hasReplica());
+
+    if (m_owningLayer->hasDebugBorders()) {
+        int red = forReplica ? debugReplicaBorderColorRed : debugSurfaceBorderColorRed;
+        int green = forReplica ?  debugReplicaBorderColorGreen : debugSurfaceBorderColorGreen;
+        int blue = forReplica ? debugReplicaBorderColorBlue : debugSurfaceBorderColorBlue;
+        SkColor color = SkColorSetARGB(debugSurfaceBorderAlpha, red, green, blue);
+        quadList.appendSurface(CCDebugBorderDrawQuad::create(sharedQuadState, contentRect(), color, debugSurfaceBorderWidth));
+    }
+
+    // FIXME: By using the same RenderSurface for both the content and its reflection,
+    // it's currently not possible to apply a separate mask to the reflection layer
+    // or correctly handle opacity in reflections (opacity must be applied after drawing
+    // both the layer and its reflection). The solution is to introduce yet another RenderSurface
+    // to draw the layer and its reflection in. For now we only apply a separate reflection
+    // mask if the contents don't have a mask of their own.
+    CCLayerImpl* maskLayer = m_owningLayer->maskLayer();
+    if (maskLayer && (!maskLayer->drawsContent() || maskLayer->bounds().isEmpty()))
+        maskLayer = 0;
+
+    if (!maskLayer && forReplica) {
+        maskLayer = m_owningLayer->replicaLayer()->maskLayer();
+        if (maskLayer && (!maskLayer->drawsContent() || maskLayer->bounds().isEmpty()))
+            maskLayer = 0;
+    }
+
+    int maskTextureId = maskLayer ? maskLayer->contentsTextureId() : 0;
+
+    quadList.appendSurface(CCRenderPassDrawQuad::create(sharedQuadState, contentRect(), renderPass, forReplica, filters(), backgroundFilters(), maskTextureId));
+}
+
+}
+#endif // USE(ACCELERATED_COMPOSITING)