void FEDropShadow::platformApplySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
Filter& filter = this->filter();
FloatSize blurRadius(2 * filter.applyHorizontalScale(m_stdX), 2 * filter.applyVerticalScale(m_stdY));
blurRadius.scale(filter.filterScale());
FloatSize offset(filter.applyHorizontalScale(m_dx), filter.applyVerticalScale(m_dy));
FloatRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
FloatRect drawingRegionWithOffset(drawingRegion);
drawingRegionWithOffset.move(offset);
ImageBuffer* sourceImage = in->asImageBuffer();
if (!sourceImage)
return;
GraphicsContext& resultContext = resultImage->context();
resultContext.setAlpha(m_shadowOpacity);
resultContext.drawImageBuffer(*sourceImage, drawingRegionWithOffset);
resultContext.setAlpha(1);
ShadowBlur contextShadow(blurRadius, offset, m_shadowColor);
// TODO: Direct pixel access to ImageBuffer would avoid copying the ImageData.
IntRect shadowArea(IntPoint(), resultImage->internalSize());
RefPtr<Uint8ClampedArray> srcPixelArray = resultImage->getPremultipliedImageData(shadowArea, ImageBuffer::BackingStoreCoordinateSystem);
contextShadow.blurLayerImage(srcPixelArray->data(), shadowArea.size(), 4 * shadowArea.size().width());
resultImage->putByteArray(Premultiplied, srcPixelArray.get(), shadowArea.size(), shadowArea, IntPoint(), ImageBuffer::BackingStoreCoordinateSystem);
resultContext.setCompositeOperation(CompositeSourceIn);
resultContext.fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()), m_shadowColor);
resultContext.setCompositeOperation(CompositeDestinationOver);
resultImage->context().drawImageBuffer(*sourceImage, drawingRegion);
}
void FEDropShadow::platformApplySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
Filter* filter = this->filter();
FloatSize blurRadius(filter->applyHorizontalScale(m_stdX), filter->applyVerticalScale(m_stdY));
FloatSize offset(filter->applyHorizontalScale(m_dx), filter->applyVerticalScale(m_dy));
FloatRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
FloatRect drawingRegionWithOffset(drawingRegion);
drawingRegionWithOffset.move(offset);
ImageBuffer* sourceImage = in->asImageBuffer();
ASSERT(sourceImage);
GraphicsContext* resultContext = resultImage->context();
ASSERT(resultContext);
resultContext->setAlpha(m_shadowOpacity);
resultContext->drawImageBuffer(sourceImage, ColorSpaceDeviceRGB, drawingRegionWithOffset);
resultContext->setAlpha(1);
ShadowBlur contextShadow(blurRadius, offset, m_shadowColor, ColorSpaceDeviceRGB);
// TODO: Direct pixel access to ImageBuffer would avoid copying the ImageData.
IntRect shadowArea(IntPoint(), resultImage->size());
RefPtr<ByteArray> srcPixelArray = resultImage->getPremultipliedImageData(shadowArea);
contextShadow.blurLayerImage(srcPixelArray->data(), shadowArea.size(), 4 * shadowArea.size().width());
resultImage->putPremultipliedImageData(srcPixelArray.get(), shadowArea.size(), shadowArea, IntPoint());
resultContext->setCompositeOperation(CompositeSourceIn);
resultContext->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()), m_shadowColor, ColorSpaceDeviceRGB);
resultContext->setCompositeOperation(CompositeDestinationOver);
resultImage->context()->drawImageBuffer(sourceImage, ColorSpaceDeviceRGB, drawingRegion);
}
