Here are gyp targets and stubs for compiling libcc and the webkit_compositor bindings in chromium. Everything is guarded behind the off-by-default use_libcc_for_compositor gyp variable. I haven't included the actual code here, but there are scripts to sync. I plan to land + manually sync the code into place until we're ready to flip the gyp switch.

Snapshot from r126652

BUG=

Review URL: https://chromiumcodereview.appspot.com/10828381

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@153354 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 213 insertions, 0 deletions

diff --git a/cc/CCRenderSurface.cpp b/cc/CCRenderSurface.cpp
new file mode 100644
index 0000000..8e26b73
--- /dev/null
+++ b/cc/CCRenderSurface.cpp
@@ -0,0 +1,213 @@
+// Copyright 2011 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"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "CCRenderSurface.h"
+
+#include "CCDamageTracker.h"
+#include "CCDebugBorderDrawQuad.h"
+#include "CCLayerImpl.h"
+#include "CCMathUtil.h"
+#include "CCQuadSink.h"
+#include "CCRenderPassDrawQuad.h"
+#include "CCSharedQuadState.h"
+#include "TextStream.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 drawableContentRect = CCMathUtil::mapClippedRect(m_drawTransform, m_contentRect);
+    if (m_owningLayer->hasReplica())
+        drawableContentRect.unite(CCMathUtil::mapClippedRect(m_replicaDrawTransform, m_contentRect));
+
+    return drawableContentRect;
+}
+
+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;
+}
+
+
+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();
+}
+
+static inline IntRect computeClippedRectInTarget(const CCLayerImpl* owningLayer)
+{
+    ASSERT(owningLayer->parent());
+
+    const CCLayerImpl* renderTarget = owningLayer->parent()->renderTarget();
+    const CCRenderSurface* self = owningLayer->renderSurface();
+
+    IntRect clippedRectInTarget = self->clipRect();
+    if (owningLayer->backgroundFilters().hasFilterThatMovesPixels()) {
+        // If the layer has background filters that move pixels, we cannot scissor as tightly.
+        // FIXME: this should be able to be a tighter scissor, perhaps expanded by the filter outsets?
+        clippedRectInTarget = renderTarget->renderSurface()->contentRect();
+    } else if (clippedRectInTarget.isEmpty()) {
+        // For surfaces, empty clipRect means that the surface does not clip anything.
+        clippedRectInTarget = enclosingIntRect(intersection(renderTarget->renderSurface()->contentRect(), self->drawableContentRect()));
+    } else
+        clippedRectInTarget.intersect(enclosingIntRect(self->drawableContentRect()));
+    return clippedRectInTarget;
+}
+
+void CCRenderSurface::appendQuads(CCQuadSink& quadSink, bool forReplica, int renderPassId)
+{
+    ASSERT(!forReplica || m_owningLayer->hasReplica());
+
+    IntRect clippedRectInTarget = computeClippedRectInTarget(m_owningLayer);
+    bool isOpaque = false;
+    const WebTransformationMatrix& drawTransform = forReplica ? m_replicaDrawTransform : m_drawTransform;
+    CCSharedQuadState* sharedQuadState = quadSink.useSharedQuadState(CCSharedQuadState::create(drawTransform, m_contentRect, clippedRectInTarget, m_drawOpacity, isOpaque));
+
+    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);
+        quadSink.append(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;
+    }
+
+    float maskTexCoordScaleX = 1;
+    float maskTexCoordScaleY = 1;
+    float maskTexCoordOffsetX = 1;
+    float maskTexCoordOffsetY = 1;
+    if (maskLayer) {
+        maskTexCoordScaleX = static_cast<float>(contentRect().width()) / maskLayer->contentBounds().width();
+        maskTexCoordScaleY = static_cast<float>(contentRect().height()) / maskLayer->contentBounds().height();
+        maskTexCoordOffsetX = static_cast<float>(contentRect().x()) / contentRect().width() * maskTexCoordScaleX;
+        maskTexCoordOffsetY = static_cast<float>(contentRect().y()) / contentRect().height() * maskTexCoordScaleY;
+    }
+
+    CCResourceProvider::ResourceId maskResourceId = maskLayer ? maskLayer->contentsResourceId() : 0;
+    IntRect contentsChangedSinceLastFrame = contentsChanged() ? m_contentRect : IntRect();
+
+    quadSink.append(CCRenderPassDrawQuad::create(sharedQuadState, contentRect(), renderPassId, forReplica, maskResourceId, contentsChangedSinceLastFrame,
+                                                 maskTexCoordScaleX, maskTexCoordScaleY, maskTexCoordOffsetX, maskTexCoordOffsetY));
+}
+
+}
+#endif // USE(ACCELERATED_COMPOSITING)