1 files changed, 92 insertions, 0 deletions
diff --git a/cc/CCRenderPass.cpp b/cc/CCRenderPass.cpp
new file mode 100644
index 0000000..2ab855f
--- /dev/null
+++ b/cc/CCRenderPass.cpp
@@ -0,0 +1,92 @@
+// 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"
+
+#include "CCRenderPass.h"
+
+#include "CCLayerImpl.h"
+#include "CCMathUtil.h"
+#include "CCOcclusionTracker.h"
+#include "CCQuadCuller.h"
+#include "CCSharedQuadState.h"
+#include "CCSolidColorDrawQuad.h"
+
+using WebKit::WebTransformationMatrix;
+
+namespace WebCore {
+
+PassOwnPtr<CCRenderPass> CCRenderPass::create(int id, IntRect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget)
+{
+    return adoptPtr(new CCRenderPass(id, outputRect, transformToRootTarget));
+}
+
+CCRenderPass::CCRenderPass(int id, IntRect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget)
+    : m_id(id)
+    , m_transformToRootTarget(transformToRootTarget)
+    , m_outputRect(outputRect)
+    , m_hasTransparentBackground(true)
+    , m_hasOcclusionFromOutsideTargetSurface(false)
+{
+    ASSERT(id > 0);
+}
+
+void CCRenderPass::appendQuadsForLayer(CCLayerImpl* layer, CCOcclusionTrackerImpl* occlusionTracker, bool& hadMissingTiles)
+{
+    const bool forSurface = false;
+    CCQuadCuller quadCuller(m_quadList, m_sharedQuadStateList, layer, occlusionTracker, layer->hasDebugBorders(), forSurface);
+
+    layer->appendQuads(quadCuller, hadMissingTiles);
+
+    m_hasOcclusionFromOutsideTargetSurface |= quadCuller.hasOcclusionFromOutsideTargetSurface();
+}
+
+void CCRenderPass::appendQuadsForRenderSurfaceLayer(CCLayerImpl* layer, const CCRenderPass* contributingRenderPass, CCOcclusionTrackerImpl* occlusionTracker)
+{
+    const bool forSurface = true;
+    CCQuadCuller quadCuller(m_quadList, m_sharedQuadStateList, layer, occlusionTracker, layer->hasDebugBorders(), forSurface);
+
+    bool isReplica = false;
+    layer->renderSurface()->appendQuads(quadCuller, isReplica, contributingRenderPass->id());
+
+    // Add replica after the surface so that it appears below the surface.
+    if (layer->hasReplica()) {
+        isReplica = true;
+        layer->renderSurface()->appendQuads(quadCuller, isReplica, contributingRenderPass->id());
+    }
+
+    m_hasOcclusionFromOutsideTargetSurface |= quadCuller.hasOcclusionFromOutsideTargetSurface();
+}
+
+void CCRenderPass::appendQuadsToFillScreen(CCLayerImpl* rootLayer, SkColor screenBackgroundColor, const CCOcclusionTrackerImpl& occlusionTracker)
+{
+    if (!rootLayer || !screenBackgroundColor)
+        return;
+
+    Region fillRegion = occlusionTracker.computeVisibleRegionInScreen();
+    if (fillRegion.isEmpty())
+        return;
+
+    bool forSurface = false;
+    CCQuadCuller quadCuller(m_quadList, m_sharedQuadStateList, rootLayer, &occlusionTracker, rootLayer->hasDebugBorders(), forSurface);
+
+    // Manually create the quad state for the gutter quads, as the root layer
+    // doesn't have any bounds and so can't generate this itself.
+    // FIXME: Make the gutter quads generated by the solid color layer (make it smarter about generating quads to fill unoccluded areas).
+    IntRect rootTargetRect = rootLayer->renderSurface()->contentRect();
+    float opacity = 1;
+    bool opaque = true;
+    CCSharedQuadState* sharedQuadState = quadCuller.useSharedQuadState(CCSharedQuadState::create(rootLayer->drawTransform(), rootTargetRect, rootTargetRect, opacity, opaque));
+    ASSERT(rootLayer->screenSpaceTransform().isInvertible());
+    WebTransformationMatrix transformToLayerSpace = rootLayer->screenSpaceTransform().inverse();
+    Vector<IntRect> fillRects = fillRegion.rects();
+    for (size_t i = 0; i < fillRects.size(); ++i) {
+        // The root layer transform is composed of translations and scales only, no perspective, so mapping is sufficient.
+        IntRect layerRect = CCMathUtil::mapClippedRect(transformToLayerSpace, fillRects[i]);
+        // Skip the quad culler and just append the quads directly to avoid occlusion checks.
+        m_quadList.append(CCSolidColorDrawQuad::create(sharedQuadState, layerRect, screenBackgroundColor));
+    }
+}
+
+}