void FEComponentTransfer::applySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<NativeImageSkia> nativeImage = image->nativeImageForCurrentFrame();
if (!nativeImage)
return;
unsigned char rValues[256], gValues[256], bValues[256], aValues[256];
getValues(rValues, gValues, bValues, aValues);
IntRect destRect = drawingRegionOfInputImage(in->absolutePaintRect());
SkPaint paint;
paint.setColorFilter(SkTableColorFilter::CreateARGB(aValues, rValues, gValues, bValues))->unref();
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
resultImage->context()->drawBitmap(nativeImage->bitmap(), destRect.x(), destRect.y(), &paint);
if (affectsTransparentPixels()) {
IntRect fullRect = IntRect(IntPoint(), absolutePaintRect().size());
resultImage->context()->clipOut(destRect);
resultImage->context()->fillRect(fullRect, Color(rValues[0], gValues[0], bValues[0], aValues[0]));
}
}
void FEColorMatrix::applySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
FilterEffect* in = inputEffect(0);
IntRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
SkAutoTUnref<SkColorFilter> filter(createColorFilter(m_type, m_values.data()));
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<NativeImageSkia> nativeImage = image->nativeImageForCurrentFrame();
if (!nativeImage)
return;
SkPaint paint;
paint.setColorFilter(filter);
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
resultImage->context()->drawBitmap(nativeImage->bitmap(), drawingRegion.x(), drawingRegion.y(), &paint);
if (affectsTransparentPixels()) {
IntRect fullRect = IntRect(IntPoint(), absolutePaintRect().size());
resultImage->context()->clipOut(drawingRegion);
resultImage->context()->fillRect(fullRect, Color(m_values[4], m_values[9], m_values[14], m_values[19]));
}
return;
}
void FEImage::platformApplySoftware()
{
RenderObject* renderer = referencedRenderer();
if (!m_image && !renderer)
return;
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
SVGFilter* svgFilter = static_cast<SVGFilter*>(filter());
FloatRect destRect = svgFilter->absoluteTransform().mapRect(filterPrimitiveSubregion());
FloatRect srcRect;
if (renderer)
srcRect = svgFilter->absoluteTransform().mapRect(renderer->repaintRectInLocalCoordinates());
else {
srcRect = FloatRect(FloatPoint(), m_image->size());
m_preserveAspectRatio.transformRect(destRect, srcRect);
}
IntPoint paintLocation = absolutePaintRect().location();
destRect.move(-paintLocation.x(), -paintLocation.y());
// FEImage results are always in ColorSpaceDeviceRGB
setResultColorSpace(ColorSpaceDeviceRGB);
if (renderer) {
const AffineTransform& absoluteTransform = svgFilter->absoluteTransform();
resultImage->context()->concatCTM(absoluteTransform);
SVGElement* contextNode = static_cast<SVGElement*>(renderer->node());
if (contextNode->isStyled() && static_cast<SVGStyledElement*>(contextNode)->hasRelativeLengths()) {
SVGLengthContext lengthContext(contextNode);
float width = 0;
float height = 0;
// If we're referencing an element with percentage units, eg. <rect with="30%"> those values were resolved against the viewport.
// Build up a transformation that maps from the viewport space to the filter primitive subregion.
if (lengthContext.determineViewport(width, height))
resultImage->context()->concatCTM(makeMapBetweenRects(FloatRect(0, 0, width, height), destRect));
}
AffineTransform contentTransformation;
SVGRenderingContext::renderSubtreeToImageBuffer(resultImage, renderer, contentTransformation);
return;
}
resultImage->context()->drawImage(m_image.get(), ColorSpaceDeviceRGB, destRect, srcRect);
}
void FEMorphology::applySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
FilterEffect* in = inputEffect(0);
IntRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
setIsAlphaImage(in->isAlphaImage());
float radiusX = filter()->applyHorizontalScale(m_radiusX);
float radiusY = filter()->applyVerticalScale(m_radiusY);
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
SkPaint paint;
GraphicsContext* dstContext = resultImage->context();
if (m_type == FEMORPHOLOGY_OPERATOR_DILATE)
paint.setImageFilter(SkDilateImageFilter::Create(radiusX, radiusY))->unref();
else if (m_type == FEMORPHOLOGY_OPERATOR_ERODE)
paint.setImageFilter(SkErodeImageFilter::Create(radiusX, radiusY))->unref();
SkRect bounds = SkRect::MakeWH(absolutePaintRect().width(), absolutePaintRect().height());
dstContext->saveLayer(&bounds, &paint);
dstContext->drawImage(image.get(), drawingRegion.location(), CompositeCopy);
dstContext->restoreLayer();
}
void GraphicsContext3D::paintRenderingResultsToCanvas(CanvasRenderingContext* context, DrawingBuffer*)
{
HTMLCanvasElement* canvas = context->canvas();
ImageBuffer* imageBuffer = canvas->buffer();
int rowBytes = m_currentWidth * 4;
int totalBytes = rowBytes * m_currentHeight;
OwnArrayPtr<unsigned char> pixels = adoptArrayPtr(new unsigned char[totalBytes]);
if (!pixels)
return;
readRenderingResults(pixels.get(), totalBytes);
if (!m_attrs.premultipliedAlpha) {
for (int i = 0; i < totalBytes; i += 4) {
// Premultiply alpha.
pixels[i + 0] = std::min(255, pixels[i + 0] * pixels[i + 3] / 255);
pixels[i + 1] = std::min(255, pixels[i + 1] * pixels[i + 3] / 255);
pixels[i + 2] = std::min(255, pixels[i + 2] * pixels[i + 3] / 255);
}
}
paintToCanvas(pixels.get(), m_currentWidth, m_currentHeight,
canvas->width(), canvas->height(), imageBuffer->context()->platformContext());
}
void FEDropShadow::applySoftware()
{
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());
GraphicsContext* resultContext = resultImage->context();
ASSERT(resultContext);
Color color = adaptColorToOperatingColorSpace(m_shadowColor.combineWithAlpha(m_shadowOpacity));
SkAutoTUnref<SkImageFilter> blurFilter(SkBlurImageFilter::Create(blurRadius.width(), blurRadius.height()));
SkAutoTUnref<SkColorFilter> colorFilter(SkColorFilter::CreateModeFilter(color.rgb(), SkXfermode::kSrcIn_Mode));
SkPaint paint;
paint.setImageFilter(blurFilter.get());
paint.setColorFilter(colorFilter.get());
paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<NativeImageSkia> nativeImage = image->nativeImageForCurrentFrame();
if (!nativeImage)
return;
resultContext->drawBitmap(nativeImage->bitmap(), drawingRegion.x() + offset.width(), drawingRegion.y() + offset.height(), &paint);
resultContext->drawBitmap(nativeImage->bitmap(), drawingRegion.x(), drawingRegion.y());
}
void FEGaussianBlur::applySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
FilterEffect* in = inputEffect(0);
IntRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
setIsAlphaImage(in->isAlphaImage());
float stdX = filter()->applyHorizontalScale(m_stdX);
float stdY = filter()->applyVerticalScale(m_stdY);
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
SkPaint paint;
GraphicsContext* dstContext = resultImage->context();
paint.setImageFilter(SkBlurImageFilter::Create(stdX, stdY))->unref();
SkRect bounds = SkRect::MakeWH(absolutePaintRect().width(), absolutePaintRect().height());
dstContext->saveLayer(&bounds, &paint);
paint.setColor(0xFFFFFFFF);
dstContext->drawImage(image.get(), drawingRegion.location(), CompositeCopy);
dstContext->restoreLayer();
}
bool FEBlend::platformApplySkia()
{
// For now, only use the skia implementation for accelerated rendering.
if (filter()->renderingMode() != Accelerated)
return false;
FilterEffect* in = inputEffect(0);
FilterEffect* in2 = inputEffect(1);
if (!in || !in2)
return false;
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return false;
RefPtr<Image> foreground = in->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<Image> background = in2->asImageBuffer()->copyImage(DontCopyBackingStore);
SkBitmap foregroundBitmap = foreground->nativeImageForCurrentFrame()->bitmap();
SkBitmap backgroundBitmap = background->nativeImageForCurrentFrame()->bitmap();
SkAutoTUnref<SkImageFilter> backgroundSource(new SkBitmapSource(backgroundBitmap));
SkBlendImageFilter::Mode mode = toSkiaMode(m_mode);
SkAutoTUnref<SkImageFilter> blend(new SkBlendImageFilter(mode, backgroundSource));
SkPaint paint;
paint.setImageFilter(blend);
SkCanvas* canvas = resultImage->context()->platformContext()->canvas();
canvas->drawBitmap(foregroundBitmap, 0, 0, &paint);
return true;
}
bool FELighting::applySkia()
{
// For now, only use the skia implementation for accelerated rendering.
if (!filter()->isAccelerated())
return false;
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return false;
FilterEffect* in = inputEffect(0);
IntRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
setIsAlphaImage(in->isAlphaImage());
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<NativeImageSkia> nativeImage = image->nativeImageForCurrentFrame();
if (!nativeImage)
return false;
GraphicsContext* dstContext = resultImage->context();
SkPaint paint;
RefPtr<SkImageFilter> filter = createImageFilter(0);
paint.setImageFilter(filter.get());
dstContext->drawBitmap(nativeImage->bitmap(), drawingRegion.location().x(), drawingRegion.location().y(), &paint);
return true;
}
bool GraphicsContext3DInternal::paintCompositedResultsToCanvas(CanvasRenderingContext* context)
{
LOGWEBGL("paintCompositedResultsToCanvas()");
ImageBuffer* imageBuffer = context->canvas()->buffer();
const SkBitmap& canvasBitmap =
imageBuffer->context()->platformContext()->recordingCanvas()->getDevice()->accessBitmap(false);
SkCanvas canvas(canvasBitmap);
MutexLocker lock(m_fboMutex);
FBO* fbo = m_frontFBO;
if (!fbo)
return false;
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, m_width, m_height, fbo->bytesPerRow());
unsigned char* bits = NULL;
if (fbo->lockGraphicBuffer((void**)&bits)) {
bitmap.setPixels(bits);
SkRect dstRect;
dstRect.iset(0, 0, imageBuffer->size().width(), imageBuffer->size().height());
canvas.save();
canvas.translate(0, SkIntToScalar(imageBuffer->size().height()));
canvas.scale(SK_Scalar1, -SK_Scalar1);
canvas.drawBitmapRect(bitmap, 0, dstRect);
canvas.restore();
bitmap.setPixels(0);
fbo->unlockGraphicBuffer();
}
return true;
}
void FEColorMatrix::platformApplySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
resultImage->context()->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
IntRect imageRect(IntPoint(), absolutePaintRect().size());
RefPtr<Uint8ClampedArray> pixelArray = resultImage->getUnmultipliedImageData(imageRect);
switch (m_type) {
case FECOLORMATRIX_TYPE_UNKNOWN:
break;
case FECOLORMATRIX_TYPE_MATRIX:
effectType<FECOLORMATRIX_TYPE_MATRIX>(pixelArray.get(), m_values);
break;
case FECOLORMATRIX_TYPE_SATURATE:
effectType<FECOLORMATRIX_TYPE_SATURATE>(pixelArray.get(), m_values);
break;
case FECOLORMATRIX_TYPE_HUEROTATE:
effectType<FECOLORMATRIX_TYPE_HUEROTATE>(pixelArray.get(), m_values);
break;
case FECOLORMATRIX_TYPE_LUMINANCETOALPHA:
effectType<FECOLORMATRIX_TYPE_LUMINANCETOALPHA>(pixelArray.get(), m_values);
setIsAlphaImage(true);
break;
}
resultImage->putByteArray(Unmultiplied, pixelArray.get(), imageRect.size(), imageRect, IntPoint());
}
void FEGaussianBlur::platformApplySkia()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
FilterEffect* in = inputEffect(0);
IntRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
setIsAlphaImage(in->isAlphaImage());
float stdX = filter()->applyHorizontalScale(m_stdX);
float stdY = filter()->applyVerticalScale(m_stdY);
RefPtr<Image> image = in->asImageBuffer()->copyImage(DontCopyBackingStore);
SkPaint paint;
GraphicsContext* dstContext = resultImage->context();
SkCanvas* canvas = dstContext->platformContext()->canvas();
paint.setImageFilter(new SkBlurImageFilter(stdX, stdY))->unref();
canvas->saveLayer(0, &paint);
paint.setColor(0xFFFFFFFF);
dstContext->drawImage(image.get(), ColorSpaceDeviceRGB, drawingRegion.location(), CompositeCopy);
canvas->restore();
return;
}
void FEFlood::platformApplySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
Color color = colorWithOverrideAlpha(floodColor().rgb(), floodOpacity());
resultImage->context()->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()), color, ColorSpaceDeviceRGB);
}
void SourceGraphic::platformApplySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
Filter* filter = this->filter();
if (!resultImage || !filter->sourceImage())
return;
resultImage->context()->drawImageBuffer(filter->sourceImage(), ColorSpaceDeviceRGB, IntPoint());
}
void GraphicsContext3DInternal::paintRenderingResultsToCanvas(CanvasRenderingContext* context)
{
HTMLCanvasElement* canvas = context->canvas();
ImageBuffer* imageBuffer = canvas->buffer();
unsigned char* pixels = 0;
#if PLATFORM(SKIA)
const SkBitmap* canvasBitmap = imageBuffer->context()->platformContext()->bitmap();
const SkBitmap* readbackBitmap = 0;
ASSERT(canvasBitmap->config() == SkBitmap::kARGB_8888_Config);
if (canvasBitmap->width() == m_impl->width() && canvasBitmap->height() == m_impl->height()) {
// This is the fastest and most common case. We read back
// directly into the canvas's backing store.
readbackBitmap = canvasBitmap;
m_resizingBitmap.reset();
} else {
// We need to allocate a temporary bitmap for reading back the
// pixel data. We will then use Skia to rescale this bitmap to
// the size of the canvas's backing store.
if (m_resizingBitmap.width() != m_impl->width() || m_resizingBitmap.height() != m_impl->height()) {
m_resizingBitmap.setConfig(SkBitmap::kARGB_8888_Config,
m_impl->width(),
m_impl->height());
if (!m_resizingBitmap.allocPixels())
return;
}
readbackBitmap = &m_resizingBitmap;
}
// Read back the frame buffer.
SkAutoLockPixels bitmapLock(*readbackBitmap);
pixels = static_cast<unsigned char*>(readbackBitmap->getPixels());
#elif PLATFORM(CG)
if (m_renderOutput)
pixels = m_renderOutput;
#else
#error Must port to your platform
#endif
m_impl->readBackFramebuffer(pixels, 4 * m_impl->width() * m_impl->height());
#if PLATFORM(SKIA)
if (m_resizingBitmap.readyToDraw()) {
// We need to draw the resizing bitmap into the canvas's backing store.
SkCanvas canvas(*canvasBitmap);
SkRect dst;
dst.set(SkIntToScalar(0), SkIntToScalar(0), SkIntToScalar(canvasBitmap->width()), SkIntToScalar(canvasBitmap->height()));
canvas.drawBitmapRect(m_resizingBitmap, 0, dst);
}
#elif PLATFORM(CG)
if (m_renderOutput && context->is3d()) {
WebGLRenderingContext* webGLContext = static_cast<WebGLRenderingContext*>(context);
webGLContext->graphicsContext3D()->paintToCanvas(m_renderOutput, m_impl->width(), m_impl->height(), canvas->width(), canvas->height(), imageBuffer->context()->platformContext());
}
#else
#error Must port to your platform
#endif
}
void FEFlood::applySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
Color color = floodColor().combineWithAlpha(floodOpacity());
resultImage->context()->fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()), color);
FilterEffect::setResultColorSpace(ColorSpaceDeviceRGB);
}
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 FEComposite::platformApplySoftware()
{
FilterEffect* in = inputEffect(0);
FilterEffect* in2 = inputEffect(1);
if (m_type == FECOMPOSITE_OPERATOR_ARITHMETIC) {
ByteArray* dstPixelArray = createPremultipliedImageResult();
if (!dstPixelArray)
return;
IntRect effectADrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
RefPtr<ByteArray> srcPixelArray = in->asPremultipliedImage(effectADrawingRect);
IntRect effectBDrawingRect = requestedRegionOfInputImageData(in2->absolutePaintRect());
in2->copyPremultipliedImage(dstPixelArray, effectBDrawingRect);
arithmetic(srcPixelArray.get(), dstPixelArray, m_k1, m_k2, m_k3, m_k4);
return;
}
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
GraphicsContext* filterContext = resultImage->context();
FloatRect srcRect = FloatRect(0, 0, -1, -1);
switch (m_type) {
case FECOMPOSITE_OPERATOR_OVER:
filterContext->drawImageBuffer(in2->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in2->absolutePaintRect()));
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
break;
case FECOMPOSITE_OPERATOR_IN: {
GraphicsContextStateSaver stateSaver(*filterContext);
filterContext->clipToImageBuffer(in2->asImageBuffer(), drawingRegionOfInputImage(in2->absolutePaintRect()));
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
break;
}
case FECOMPOSITE_OPERATOR_OUT:
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
filterContext->drawImageBuffer(in2->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in2->absolutePaintRect()), srcRect, CompositeDestinationOut);
break;
case FECOMPOSITE_OPERATOR_ATOP:
filterContext->drawImageBuffer(in2->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in2->absolutePaintRect()));
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()), srcRect, CompositeSourceAtop);
break;
case FECOMPOSITE_OPERATOR_XOR:
filterContext->drawImageBuffer(in2->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in2->absolutePaintRect()));
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()), srcRect, CompositeXOR);
break;
default:
break;
}
}
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);
}
void SourceAlpha::platformApplySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
Filter* filter = this->filter();
if (!resultImage || !filter->sourceImage())
return;
setIsAlphaImage(true);
FloatRect imageRect(FloatPoint(), absolutePaintRect().size());
GraphicsContext* filterContext = resultImage->context();
filterContext->fillRect(imageRect, Color::black, ColorSpaceDeviceRGB);
filterContext->drawImageBuffer(filter->sourceImage(), ColorSpaceDeviceRGB, IntPoint(), CompositeDestinationIn);
}
PassRefPtr<Image> WebCLHTMLUtil::videoFrameToImage(HTMLVideoElement* video)
{
if (!video || !video->clientWidth() || !video->clientHeight())
return nullptr;
IntSize size(video->clientWidth(), video->clientHeight());
ImageBuffer* imageBufferObject = m_generatedImageCache.imageBuffer(size);
if (!imageBufferObject)
return nullptr;
IntRect destRect(0, 0, size.width(), size.height());
video->paintCurrentFrameInContext(imageBufferObject->context(), destRect);
return imageBufferObject->copyImage();
}
void FEMerge::platformApplySoftware()
{
unsigned size = numberOfEffectInputs();
ASSERT(size > 0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
GraphicsContext* filterContext = resultImage->context();
for (unsigned i = 0; i < size; ++i) {
FilterEffect* in = inputEffect(i);
filterContext->drawImageBuffer(in->asImageBuffer(), ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()));
}
}
void FEOffset::applySoftware()
{
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
setIsAlphaImage(in->isAlphaImage());
FloatRect drawingRegion = drawingRegionOfInputImage(in->absolutePaintRect());
Filter* filter = this->filter();
drawingRegion.move(filter->applyHorizontalScale(m_dx), filter->applyVerticalScale(m_dy));
resultImage->context()->drawImageBuffer(in->asImageBuffer(), drawingRegion);
}
void GraphicsContext3D::paintRenderingResultsToCanvas(CanvasRenderingContext* context)
{
HTMLCanvasElement* canvas = context->canvas();
ImageBuffer* imageBuffer = canvas->buffer();
int rowBytes = m_currentWidth * 4;
int totalBytes = rowBytes * m_currentHeight;
OwnArrayPtr<unsigned char> pixels = adoptArrayPtr(new unsigned char[totalBytes]);
if (!pixels)
return;
makeContextCurrent();
bool mustRestoreFBO = false;
if (m_attrs.antialias) {
::glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, m_multisampleFBO);
::glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, m_fbo);
::glBlitFramebufferEXT(0, 0, m_currentWidth, m_currentHeight, 0, 0, m_currentWidth, m_currentHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
mustRestoreFBO = true;
} else {
if (m_boundFBO != m_fbo) {
mustRestoreFBO = true;
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
}
}
GLint packAlignment = 4;
bool mustRestorePackAlignment = false;
::glGetIntegerv(GL_PACK_ALIGNMENT, &packAlignment);
if (packAlignment > 4) {
::glPixelStorei(GL_PACK_ALIGNMENT, 4);
mustRestorePackAlignment = true;
}
::glReadPixels(0, 0, m_currentWidth, m_currentHeight, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, pixels.get());
if (mustRestorePackAlignment)
::glPixelStorei(GL_PACK_ALIGNMENT, packAlignment);
if (mustRestoreFBO)
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_boundFBO);
paintToCanvas(pixels.get(), m_currentWidth, m_currentHeight,
canvas->width(), canvas->height(), imageBuffer->context()->platformContext());
}
void GraphicsContext3DInternal::paintRenderingResultsToCanvas(CanvasRenderingContext* context)
{
LOGWEBGL("paintRenderingResultsToCanvas()");
ImageBuffer* imageBuffer = context->canvas()->buffer();
const SkBitmap& canvasBitmap =
imageBuffer->context()->platformContext()->recordingCanvas()->getDevice()->accessBitmap(false);
SkCanvas canvas(canvasBitmap);
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, m_width, m_height);
bitmap.allocPixels();
unsigned char *pixels = static_cast<unsigned char*>(bitmap.getPixels());
glReadPixels(0, 0, m_width, m_height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
SkRect dstRect;
dstRect.iset(0, 0, imageBuffer->size().width(), imageBuffer->size().height());
canvas.drawBitmapRect(bitmap, 0, dstRect);
}
void FEImage::platformApplySoftware()
{
if (!m_image.get())
return;
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
FloatRect srcRect(FloatPoint(), m_image->size());
FloatRect destRect(m_absoluteSubregion);
m_preserveAspectRatio.transformRect(destRect, srcRect);
IntPoint paintLocation = absolutePaintRect().location();
destRect.move(-paintLocation.x(), -paintLocation.y());
resultImage->context()->drawImage(m_image.get(), ColorSpaceDeviceRGB, destRect, srcRect);
}
void FEBlend::platformApplySoftware()
{
FilterEffect* in = inputEffect(0);
FilterEffect* in2 = inputEffect(1);
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return;
GraphicsContext& filterContext = resultImage->context();
ImageBuffer* imageBuffer = in->asImageBuffer();
ImageBuffer* imageBuffer2 = in2->asImageBuffer();
ASSERT(imageBuffer);
ASSERT(imageBuffer2);
filterContext.drawImageBuffer(imageBuffer2, ColorSpaceDeviceRGB, drawingRegionOfInputImage(in2->absolutePaintRect()));
filterContext.drawImageBuffer(imageBuffer, ColorSpaceDeviceRGB, drawingRegionOfInputImage(in->absolutePaintRect()), IntRect(IntPoint(), imageBuffer->logicalSize()), ImagePaintingOptions(CompositeSourceOver, m_mode));
}
void FETile::platformApplySoftware()
{
// FIXME: See bug 47315. This is a hack to work around a compile failure, but is incorrect behavior otherwise.
FilterEffect* in = inputEffect(0);
ImageBuffer* resultImage = createImageBufferResult();
ImageBuffer* inBuffer = in->asImageBuffer();
if (!resultImage || !inBuffer)
return;
setIsAlphaImage(in->isAlphaImage());
// Source input needs more attention. It has the size of the filterRegion but gives the
// size of the cutted sourceImage back. This is part of the specification and optimization.
FloatRect tileRect = in->maxEffectRect();
FloatPoint inMaxEffectLocation = tileRect.location();
FloatPoint maxEffectLocation = maxEffectRect().location();
if (in->filterEffectType() == FilterEffectTypeSourceInput) {
Filter& filter = this->filter();
tileRect = filter.filterRegion();
tileRect.scale(filter.filterResolution().width(), filter.filterResolution().height());
}
auto tileImage = SVGRenderingContext::createImageBuffer(tileRect, tileRect, ColorSpaceSRGB, filter().renderingMode());
if (!tileImage)
return;
GraphicsContext& tileImageContext = tileImage->context();
tileImageContext.translate(-inMaxEffectLocation.x(), -inMaxEffectLocation.y());
tileImageContext.drawImageBuffer(*inBuffer, in->absolutePaintRect().location());
auto tileImageCopy = ImageBuffer::sinkIntoImage(WTFMove(tileImage));
if (!tileImageCopy)
return;
auto pattern = Pattern::create(WTFMove(tileImageCopy), true, true);
AffineTransform patternTransform;
patternTransform.translate(inMaxEffectLocation.x() - maxEffectLocation.x(), inMaxEffectLocation.y() - maxEffectLocation.y());
pattern.get().setPatternSpaceTransform(patternTransform);
GraphicsContext& filterContext = resultImage->context();
filterContext.setFillPattern(WTFMove(pattern));
filterContext.fillRect(FloatRect(FloatPoint(), absolutePaintRect().size()));
}
void SourceAlpha::applySoftware()
{
ImageBuffer* resultImage = createImageBufferResult();
Filter* filter = this->filter();
if (!resultImage || !filter->sourceImage())
return;
setIsAlphaImage(true);
FloatRect imageRect(FloatPoint(), absolutePaintRect().size());
GraphicsContext* filterContext = resultImage->context();
filterContext->fillRect(imageRect, Color::black);
IntRect srcRect = filter->sourceImageRect();
if (ImageBuffer* sourceImageBuffer = filter->sourceImage()) {
filterContext->drawImageBuffer(sourceImageBuffer,
FloatRect(IntPoint(srcRect.location() - absolutePaintRect().location()), sourceImageBuffer->size()),
0, CompositeDestinationIn);
}
}
bool FEDisplacementMap::applySkia()
{
// For now, only use the skia implementation for accelerated rendering.
if (!filter()->isAccelerated())
return false;
FilterEffect* in = inputEffect(0);
FilterEffect* in2 = inputEffect(1);
if (!in || !in2)
return false;
ImageBuffer* resultImage = createImageBufferResult();
if (!resultImage)
return false;
RefPtr<Image> color = in->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<Image> displ = in2->asImageBuffer()->copyImage(DontCopyBackingStore);
RefPtr<NativeImageSkia> colorNativeImage = color->nativeImageForCurrentFrame();
RefPtr<NativeImageSkia> displNativeImage = displ->nativeImageForCurrentFrame();
if (!colorNativeImage || !displNativeImage)
return false;
SkBitmap colorBitmap = colorNativeImage->bitmap();
SkBitmap displBitmap = displNativeImage->bitmap();
SkAutoTUnref<SkImageFilter> colorSource(new SkBitmapSource(colorBitmap));
SkAutoTUnref<SkImageFilter> displSource(new SkBitmapSource(displBitmap));
SkDisplacementMapEffect::ChannelSelectorType typeX = toSkiaMode(m_xChannelSelector);
SkDisplacementMapEffect::ChannelSelectorType typeY = toSkiaMode(m_yChannelSelector);
// FIXME : Only applyHorizontalScale is used and applyVerticalScale is ignored
// This can be fixed by adding a 2nd scale parameter to SkDisplacementMapEffect
SkAutoTUnref<SkImageFilter> displEffect(new SkDisplacementMapEffect(
typeX, typeY, SkFloatToScalar(filter()->applyHorizontalScale(m_scale)), displSource, colorSource));
SkPaint paint;
paint.setImageFilter(displEffect);
resultImage->context()->drawBitmap(colorBitmap, 0, 0, &paint);
return true;
}