void RenderSVGResourceFilter::postApplyResource(RenderObject* object, GraphicsContext*& context, unsigned short resourceMode, const Path*, const RenderSVGShape*)
{
ASSERT(object);
ASSERT(context);
ASSERT_UNUSED(resourceMode, resourceMode == ApplyToDefaultMode);
FilterData* filterData = m_filter.get(object);
if (!filterData)
return;
if (filterData->markedForRemoval) {
delete m_filter.take(object);
return;
}
// We have a cycle if we are already applying the data.
// This can occur due to FeImage referencing a source that makes use of the FEImage itself.
if (filterData->isApplying)
return;
if (!filterData->isBuilt) {
if (!filterData->savedContext) {
removeClientFromCache(object);
return;
}
context = filterData->savedContext;
filterData->savedContext = 0;
}
ApplyingFilterEffectGuard isApplyingGuard(filterData);
FilterEffect* lastEffect = filterData->builder->lastEffect();
if (lastEffect && !filterData->boundaries.isEmpty() && !lastEffect->filterPrimitiveSubregion().isEmpty()) {
// This is the real filtering of the object. It just needs to be called on the
// initial filtering process. We just take the stored filter result on a
// second drawing.
if (!filterData->isBuilt)
filterData->filter->setSourceImage(filterData->sourceGraphicBuffer.release());
// Always true if filterData is just built (filterData->isBuilt is false).
if (!lastEffect->hasResult()) {
lastEffect->apply();
lastEffect->correctFilterResultIfNeeded();
#if !USE(CG)
ImageBuffer* resultImage = lastEffect->asImageBuffer();
if (resultImage)
resultImage->transformColorSpace(lastEffect->colorSpace(), ColorSpaceDeviceRGB);
#endif
}
filterData->isBuilt = true;
ImageBuffer* resultImage = lastEffect->asImageBuffer();
if (resultImage) {
context->concatCTM(filterData->shearFreeAbsoluteTransform.inverse());
context->scale(FloatSize(1 / filterData->filter->filterResolution().width(), 1 / filterData->filter->filterResolution().height()));
context->drawImageBuffer(resultImage, object->style()->colorSpace(), lastEffect->absolutePaintRect());
context->scale(filterData->filter->filterResolution());
context->concatCTM(filterData->shearFreeAbsoluteTransform);
}
}
filterData->sourceGraphicBuffer.clear();
}
