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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/CCLayerImpl.h"
#include "GraphicsContext3D.h"
#include "LayerChromium.h" // FIXME: temporary and bad
#include "LayerRendererChromium.h"
#include "RenderSurfaceChromium.h"
#include <wtf/text/WTFString.h>
namespace {
void toGLMatrix(float* flattened, const WebCore::TransformationMatrix& m)
{
flattened[0] = m.m11();
flattened[1] = m.m12();
flattened[2] = m.m13();
flattened[3] = m.m14();
flattened[4] = m.m21();
flattened[5] = m.m22();
flattened[6] = m.m23();
flattened[7] = m.m24();
flattened[8] = m.m31();
flattened[9] = m.m32();
flattened[10] = m.m33();
flattened[11] = m.m34();
flattened[12] = m.m41();
flattened[13] = m.m42();
flattened[14] = m.m43();
flattened[15] = m.m44();
}
}
namespace WebCore {
CCLayerImpl::CCLayerImpl(LayerChromium* owner)
: m_owner(owner)
, m_anchorPoint(0.5, 0.5)
, m_anchorPointZ(0)
, m_doubleSided(true)
, m_masksToBounds(false)
, m_opacity(1.0)
, m_preserves3D(false)
#ifndef NDEBUG
, m_debugID(owner->debugID())
#endif
, m_targetRenderSurface(0)
, m_drawDepth(0)
, m_drawOpacity(0)
, m_debugBorderColor(0, 0, 0, 0)
, m_debugBorderWidth(0)
, m_renderSurface(0)
, m_layerRenderer(0)
{
}
CCLayerImpl::~CCLayerImpl()
{
}
// These are pseudo-structural hacks until we get real tree syncing up in this piece.
CCLayerImpl* CCLayerImpl::superlayer() const
{
return m_owner->superlayer() ? m_owner->superlayer()->ccLayerImpl() : 0;
}
CCLayerImpl* CCLayerImpl::maskLayer() const
{
return m_owner->maskLayer() ? m_owner->maskLayer()->ccLayerImpl() : 0;
}
CCLayerImpl* CCLayerImpl::replicaLayer() const
{
return m_owner->replicaLayer() ? m_owner->replicaLayer()->ccLayerImpl() : 0;
}
void CCLayerImpl::setLayerRenderer(LayerRendererChromium* renderer)
{
m_layerRenderer = renderer;
}
RenderSurfaceChromium* CCLayerImpl::createRenderSurface()
{
m_renderSurface = new RenderSurfaceChromium(this);
return m_renderSurface.get();
}
bool CCLayerImpl::descendantsDrawsContent()
{
const Vector<RefPtr<LayerChromium> >& sublayers = m_owner->getSublayers();
for (size_t i = 0; i < sublayers.size(); ++i) {
sublayers[i]->createCCLayerImplIfNeeded();
if (sublayers[i]->ccLayerImpl()->drawsContent() || sublayers[i]->ccLayerImpl()->descendantsDrawsContent())
return true;
}
return false;
}
// These belong on CCLayerImpl, but should be overridden by each type and not defer to the LayerChromium subtypes.
bool CCLayerImpl::drawsContent() const
{
return m_owner && m_owner->drawsContent();
}
void CCLayerImpl::draw(const IntRect& targetSurfaceRect)
{
return m_owner->draw(targetSurfaceRect);
}
void CCLayerImpl::updateCompositorResources()
{
return m_owner->updateCompositorResources();
}
void CCLayerImpl::unreserveContentsTexture()
{
m_owner->unreserveContentsTexture();
}
void CCLayerImpl::bindContentsTexture()
{
m_owner->bindContentsTexture();
}
void CCLayerImpl::cleanupResources()
{
if (renderSurface())
renderSurface()->cleanupResources();
}
const IntRect CCLayerImpl::getDrawRect() const
{
// Form the matrix used by the shader to map the corners of the layer's
// bounds into the view space.
FloatRect layerRect(-0.5 * bounds().width(), -0.5 * bounds().height(), bounds().width(), bounds().height());
IntRect mappedRect = enclosingIntRect(drawTransform().mapRect(layerRect));
return mappedRect;
}
void CCLayerImpl::drawDebugBorder()
{
static float glMatrix[16];
if (!debugBorderColor().alpha())
return;
ASSERT(layerRenderer());
const LayerChromium::BorderProgram* program = layerRenderer()->borderProgram();
ASSERT(program && program->initialized());
layerRenderer()->useShader(program->program());
TransformationMatrix renderMatrix = drawTransform();
renderMatrix.scale3d(bounds().width(), bounds().height(), 1);
toGLMatrix(&glMatrix[0], layerRenderer()->projectionMatrix() * renderMatrix);
GraphicsContext3D* context = layerRenderer()->context();
GLC(context, context->uniformMatrix4fv(program->vertexShader().matrixLocation(), false, &glMatrix[0], 1));
GLC(context, context->uniform4f(program->fragmentShader().colorLocation(), debugBorderColor().red() / 255.0, debugBorderColor().green() / 255.0, debugBorderColor().blue() / 255.0, 1));
GLC(context, context->lineWidth(debugBorderWidth()));
// The indices for the line are stored in the same array as the triangle indices.
GLC(context, context->drawElements(GraphicsContext3D::LINE_LOOP, 4, GraphicsContext3D::UNSIGNED_SHORT, 6 * sizeof(unsigned short)));
}
void CCLayerImpl::writeIndent(TextStream& ts, int indent)
{
for (int i = 0; i != indent; ++i)
ts << " ";
}
void CCLayerImpl::dumpLayerProperties(TextStream& ts, int indent) const
{
writeIndent(ts, indent);
ts << "bounds: " << bounds().width() << ", " << bounds().height() << "\n";
if (m_targetRenderSurface) {
writeIndent(ts, indent);
ts << "targetRenderSurface: " << m_targetRenderSurface->name() << "\n";
}
writeIndent(ts, indent);
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";
}
}
#endif // USE(ACCELERATED_COMPOSITING)
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