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/*
* 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 "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 = CCMathUtil::mapClippedRect(m_drawTransform, localContentRect);
if (hasReplica())
drawableContentRect.unite(CCMathUtil::mapClippedRect(m_replicaDrawTransform, localContentRect));
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;
}
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(m_originTransform, m_contentRect, m_scissorRect, m_drawOpacity, isOpaque);
}
PassOwnPtr<CCSharedQuadState> CCRenderSurface::createReplicaSharedQuadState() const
{
bool isOpaque = false;
return CCSharedQuadState::create(m_replicaOriginTransform, m_contentRect, m_scissorRect, m_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, int renderPassId)
{
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;
WebTransformationMatrix drawTransform = forReplica ? m_replicaDrawTransform : m_drawTransform;
IntRect contentsChangedSinceLastFrame = contentsChanged() ? m_contentRect : IntRect();
quadList.appendSurface(CCRenderPassDrawQuad::create(sharedQuadState, contentRect(), renderPassId, forReplica, drawTransform, filters(), backgroundFilters(), maskTextureId, contentsChangedSinceLastFrame));
}
}
#endif // USE(ACCELERATED_COMPOSITING)
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