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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"
#if USE(ACCELERATED_COMPOSITING)
#include "CCQuadCuller.h"
#include "CCAppendQuadsData.h"
#include "CCDebugBorderDrawQuad.h"
#include "CCLayerImpl.h"
#include "CCOcclusionTracker.h"
#include "CCOverdrawMetrics.h"
#include "CCRenderPass.h"
#include "Region.h"
#include "SkColor.h"
#include <public/WebTransformationMatrix.h>
using namespace std;
namespace cc {
static const int debugTileBorderWidth = 1;
static const int debugTileBorderAlpha = 120;
static const int debugTileBorderColorRed = 160;
static const int debugTileBorderColorGreen = 100;
static const int debugTileBorderColorBlue = 0;
CCQuadCuller::CCQuadCuller(CCQuadList& quadList, CCSharedQuadStateList& sharedQuadStateList, CCLayerImpl* layer, const CCOcclusionTrackerImpl* occlusionTracker, bool showCullingWithDebugBorderQuads, bool forSurface)
: m_quadList(quadList)
, m_sharedQuadStateList(sharedQuadStateList)
, m_currentSharedQuadState(0)
, m_layer(layer)
, m_occlusionTracker(occlusionTracker)
, m_showCullingWithDebugBorderQuads(showCullingWithDebugBorderQuads)
, m_forSurface(forSurface)
{
}
CCSharedQuadState* CCQuadCuller::useSharedQuadState(scoped_ptr<CCSharedQuadState> sharedQuadState)
{
sharedQuadState->id = m_sharedQuadStateList.size();
// FIXME: If all quads are culled for the sharedQuadState, we can drop it from the list.
m_currentSharedQuadState = sharedQuadState.get();
m_sharedQuadStateList.append(sharedQuadState.Pass());
return m_currentSharedQuadState;
}
static inline bool appendQuadInternal(scoped_ptr<CCDrawQuad> drawQuad, const IntRect& culledRect, CCQuadList& quadList, const CCOcclusionTrackerImpl& occlusionTracker, bool createDebugBorderQuads)
{
bool keepQuad = !culledRect.isEmpty();
if (keepQuad)
drawQuad->setQuadVisibleRect(culledRect);
occlusionTracker.overdrawMetrics().didCullForDrawing(drawQuad->quadTransform(), drawQuad->quadRect(), culledRect);
occlusionTracker.overdrawMetrics().didDraw(drawQuad->quadTransform(), culledRect, drawQuad->opaqueRect());
if (keepQuad) {
if (createDebugBorderQuads && !drawQuad->isDebugQuad() && drawQuad->quadVisibleRect() != drawQuad->quadRect()) {
SkColor borderColor = SkColorSetARGB(debugTileBorderAlpha, debugTileBorderColorRed, debugTileBorderColorGreen, debugTileBorderColorBlue);
quadList.append(CCDebugBorderDrawQuad::create(drawQuad->sharedQuadState(), drawQuad->quadVisibleRect(), borderColor, debugTileBorderWidth).PassAs<CCDrawQuad>());
}
// Pass the quad after we're done using it.
quadList.append(drawQuad.Pass());
}
return keepQuad;
}
bool CCQuadCuller::append(scoped_ptr<CCDrawQuad> drawQuad, CCAppendQuadsData& appendQuadsData)
{
ASSERT(drawQuad->sharedQuadState() == m_currentSharedQuadState);
ASSERT(drawQuad->sharedQuadStateId() == m_currentSharedQuadState->id);
ASSERT(!m_sharedQuadStateList.isEmpty());
ASSERT(m_sharedQuadStateList.last() == m_currentSharedQuadState);
IntRect culledRect;
bool hasOcclusionFromOutsideTargetSurface;
if (m_forSurface)
culledRect = m_occlusionTracker->unoccludedContributingSurfaceContentRect(m_layer, false, drawQuad->quadRect(), &hasOcclusionFromOutsideTargetSurface);
else
culledRect = m_occlusionTracker->unoccludedContentRect(m_layer, drawQuad->quadRect(), &hasOcclusionFromOutsideTargetSurface);
appendQuadsData.hadOcclusionFromOutsideTargetSurface |= hasOcclusionFromOutsideTargetSurface;
return appendQuadInternal(drawQuad.Pass(), culledRect, m_quadList, *m_occlusionTracker, m_showCullingWithDebugBorderQuads);
}
} // namespace cc
#endif // USE(ACCELERATED_COMPOSITING)
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