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// 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 "base/stringprintf.h"
#include "CCDamageTracker.h"
#include "CCDebugBorderDrawQuad.h"
#include "CCDelegatedRendererLayerImpl.h"
#include "CCLayerImpl.h"
#include "CCMathUtil.h"
#include "CCQuadSink.h"
#include "CCRenderPass.h"
#include "CCRenderPassDrawQuad.h"
#include "CCRenderPassSink.h"
#include "CCSharedQuadState.h"
#include <public/WebTransformationMatrix.h>
using WebKit::WebTransformationMatrix;
namespace cc {
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;
}
std::string CCRenderSurface::name() const
{
return base::StringPrintf("RenderSurface(id=%i,owner=%s)", m_owningLayer->id(), m_owningLayer->debugName().data());
}
static std::string indentString(int indent)
{
std::string str;
for (int i = 0; i != indent; ++i)
str.append(" ");
return str;
}
void CCRenderSurface::dumpSurface(std::string* str, int indent) const
{
std::string indentStr = indentString(indent);
str->append(indentStr);
base::StringAppendF(str, "%s\n", name().data());
indentStr.append(" ");
str->append(indentStr);
base::StringAppendF(str, "contentRect: (%d, %d, %d, %d)\n", m_contentRect.x(), m_contentRect.y(), m_contentRect.width(), m_contentRect.height());
str->append(indentStr);
base::StringAppendF(str, "drawTransform: %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f\n",
m_drawTransform.m11(), m_drawTransform.m12(), m_drawTransform.m13(), m_drawTransform.m14(),
m_drawTransform.m21(), m_drawTransform.m22(), m_drawTransform.m23(), m_drawTransform.m24(),
m_drawTransform.m31(), m_drawTransform.m32(), m_drawTransform.m33(), m_drawTransform.m34(),
m_drawTransform.m41(), m_drawTransform.m42(), m_drawTransform.m43(), m_drawTransform.m44());
str->append(indentStr);
base::StringAppendF(str, "damageRect is pos(%f, %f), size(%f, %f)\n",
m_damageTracker->currentDamageRect().x(), m_damageTracker->currentDamageRect().y(),
m_damageTracker->currentDamageRect().width(), m_damageTracker->currentDamageRect().height());
}
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();
}
void CCRenderSurface::addContributingDelegatedRenderPassLayer(CCLayerImpl* layer)
{
ASSERT(std::find(m_layerList.begin(), m_layerList.end(), layer) != m_layerList.end());
CCDelegatedRendererLayerImpl* delegatedRendererLayer = static_cast<CCDelegatedRendererLayerImpl*>(layer);
m_contributingDelegatedRenderPassLayerList.push_back(delegatedRendererLayer);
}
void CCRenderSurface::clearLayerLists()
{
m_layerList.clear();
m_contributingDelegatedRenderPassLayerList.clear();
}
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;
}
CCRenderPass::Id CCRenderSurface::renderPassId()
{
int layerId = m_owningLayer->id();
int subId = 0;
ASSERT(layerId > 0);
return CCRenderPass::Id(layerId, subId);
}
void CCRenderSurface::appendRenderPasses(CCRenderPassSink& passSink)
{
for (size_t i = 0; i < m_contributingDelegatedRenderPassLayerList.size(); ++i)
m_contributingDelegatedRenderPassLayerList[i]->appendContributingRenderPasses(passSink);
scoped_ptr<CCRenderPass> pass = CCRenderPass::create(renderPassId(), m_contentRect, m_screenSpaceTransform);
pass->setDamageRect(m_damageTracker->currentDamageRect());
pass->setFilters(m_owningLayer->filters());
pass->setBackgroundFilters(m_owningLayer->backgroundFilters());
passSink.appendRenderPass(pass.Pass());
}
void CCRenderSurface::appendQuads(CCQuadSink& quadSink, CCAppendQuadsData& appendQuadsData, bool forReplica, CCRenderPass::Id 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).Pass());
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).PassAs<CCDrawQuad>(), appendQuadsData);
}
// 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).PassAs<CCDrawQuad>(), appendQuadsData);
}
}
#endif // USE(ACCELERATED_COMPOSITING)
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