void CCRenderSurface::drawSurface(LayerRendererChromium* layerRenderer, CCLayerImpl* maskLayer, const TransformationMatrix& drawTransform, const TransformationMatrix& deviceTransform, const CCLayerQuad& deviceRect, const CCLayerQuad& layerQuad, int contentsTextureId, const T* program, int shaderMaskSamplerLocation, int shaderQuadLocation, int shaderEdgeLocation)
{
GraphicsContext3D* context3D = layerRenderer->context();
context3D->makeContextCurrent();
GLC(context3D, context3D->useProgram(program->program()));
GLC(context3D, context3D->activeTexture(GraphicsContext3D::TEXTURE0));
GLC(context3D, context3D->uniform1i(program->fragmentShader().samplerLocation(), 0));
context3D->bindTexture(GraphicsContext3D::TEXTURE_2D, contentsTextureId);
if (shaderMaskSamplerLocation != -1) {
GLC(context3D, context3D->activeTexture(GraphicsContext3D::TEXTURE1));
GLC(context3D, context3D->uniform1i(shaderMaskSamplerLocation, 1));
maskLayer->bindContentsTexture(layerRenderer);
GLC(context3D, context3D->activeTexture(GraphicsContext3D::TEXTURE0));
}
if (shaderEdgeLocation != -1) {
float edge[24];
layerQuad.toFloatArray(edge);
deviceRect.toFloatArray(&edge[12]);
GLC(context3D, context3D->uniform3fv(shaderEdgeLocation, 8, edge));
}
// Map device space quad to layer space.
FloatQuad quad = deviceTransform.inverse().mapQuad(layerQuad.floatQuad());
layerRenderer->drawTexturedQuad(drawTransform, m_contentRect.width(), m_contentRect.height(), m_drawOpacity, quad,
program->vertexShader().matrixLocation(), program->fragmentShader().alphaLocation(), shaderQuadLocation);
}
void CCRenderSurface::drawLayer(LayerRendererChromium* layerRenderer, CCLayerImpl* maskLayer, const TransformationMatrix& drawTransform, int contentsTextureId)
{
TransformationMatrix deviceMatrix = computeDeviceTransform(layerRenderer, drawTransform);
// Can only draw surface if device matrix is invertible.
if (!deviceMatrix.isInvertible())
return;
// Draw the background texture if there is one.
if (m_backgroundTexture && m_backgroundTexture->isReserved())
copyTextureToFramebuffer(layerRenderer, m_backgroundTexture->textureId(), m_contentRect.size(), drawTransform);
FloatQuad quad = deviceMatrix.mapQuad(layerRenderer->sharedGeometryQuad());
CCLayerQuad deviceRect = CCLayerQuad(FloatQuad(quad.boundingBox()));
CCLayerQuad layerQuad = CCLayerQuad(quad);
// Use anti-aliasing programs only when necessary.
bool useAA = (!quad.isRectilinear() || !quad.boundingBox().isExpressibleAsIntRect());
if (useAA) {
deviceRect.inflateAntiAliasingDistance();
layerQuad.inflateAntiAliasingDistance();
}
bool useMask = false;
if (maskLayer && maskLayer->drawsContent())
if (!maskLayer->bounds().isEmpty())
useMask = true;
// FIXME: pass in backgroundTextureId and blend the background in with this draw instead of having a separate drawBackground() pass.
if (useMask) {
if (useAA) {
const LayerRendererChromium::RenderSurfaceMaskProgramAA* program = layerRenderer->renderSurfaceMaskProgramAA();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, deviceRect, layerQuad, contentsTextureId, program, program->fragmentShader().maskSamplerLocation(), program->vertexShader().pointLocation(), program->fragmentShader().edgeLocation());
} else {
const LayerRendererChromium::RenderSurfaceMaskProgram* program = layerRenderer->renderSurfaceMaskProgram();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, deviceRect, layerQuad, contentsTextureId, program, program->fragmentShader().maskSamplerLocation(), -1, -1);
}
} else {
if (useAA) {
const LayerRendererChromium::RenderSurfaceProgramAA* program = layerRenderer->renderSurfaceProgramAA();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, deviceRect, layerQuad, contentsTextureId, program, -1, program->vertexShader().pointLocation(), program->fragmentShader().edgeLocation());
} else {
const LayerRendererChromium::RenderSurfaceProgram* program = layerRenderer->renderSurfaceProgram();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, deviceRect, layerQuad, contentsTextureId, program, -1, -1, -1);
}
}
}
void CCRenderSurface::drawLayer(LayerRendererChromium* layerRenderer, CCLayerImpl* maskLayer, const TransformationMatrix& drawTransform)
{
TransformationMatrix renderMatrix = drawTransform;
// Apply a scaling factor to size the quad from 1x1 to its intended size.
renderMatrix.scale3d(m_contentRect.width(), m_contentRect.height(), 1);
TransformationMatrix deviceMatrix = TransformationMatrix(layerRenderer->windowMatrix() * layerRenderer->projectionMatrix() * renderMatrix).to2dTransform();
// Can only draw surface if device matrix is invertible.
if (!deviceMatrix.isInvertible())
return;
FloatQuad quad = deviceMatrix.mapQuad(layerRenderer->sharedGeometryQuad());
CCLayerQuad layerQuad = CCLayerQuad(quad);
#if defined(OS_CHROMEOS)
// FIXME: Disable anti-aliasing to workaround broken driver.
bool useAA = false;
#else
// Use anti-aliasing programs only when necessary.
bool useAA = (!quad.isRectilinear() || !quad.boundingBox().isExpressibleAsIntRect());
#endif
if (useAA)
layerQuad.inflateAntiAliasingDistance();
bool useMask = false;
if (maskLayer && maskLayer->drawsContent())
if (!maskLayer->bounds().isEmpty())
useMask = true;
if (useMask) {
if (useAA) {
const MaskProgramAA* program = layerRenderer->renderSurfaceMaskProgramAA();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, layerQuad, program, program->fragmentShader().maskSamplerLocation(), program->vertexShader().pointLocation(), program->fragmentShader().edgeLocation());
} else {
const MaskProgram* program = layerRenderer->renderSurfaceMaskProgram();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, layerQuad, program, program->fragmentShader().maskSamplerLocation(), -1, -1);
}
} else {
if (useAA) {
const ProgramAA* program = layerRenderer->renderSurfaceProgramAA();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, layerQuad, program, -1, program->vertexShader().pointLocation(), program->fragmentShader().edgeLocation());
} else {
const Program* program = layerRenderer->renderSurfaceProgram();
drawSurface(layerRenderer, maskLayer, drawTransform, deviceMatrix, layerQuad, program, -1, -1, -1);
}
}
}
