void FilterEffectRenderer::apply()
{
lastEffect()->apply();
#if !USE(CG)
output()->transformColorSpace(lastEffect()->colorSpace(), ColorSpaceDeviceRGB);
#endif
}
LayoutRect FilterEffectRenderer::computeSourceImageRectForDirtyRect(const LayoutRect& filterBoxRect, const LayoutRect& dirtyRect)
{
// The result of this function is the area in the "filterBoxRect" that needs to be repainted, so that we fully cover the "dirtyRect".
FloatRect rectForRepaint = dirtyRect;
float inf = std::numeric_limits<float>::infinity();
FloatRect clipRect = FloatRect(FloatPoint(-inf, -inf), FloatSize(inf, inf));
rectForRepaint = lastEffect()->getSourceRect(rectForRepaint, clipRect);
rectForRepaint.intersect(filterBoxRect);
return LayoutRect(rectForRepaint);
}
void FilterEffectRenderer::prepare()
{
// At this point the effect chain has been built, and the
// source image sizes set. We just need to attach the graphic
// buffer if we have not yet done so.
if (!m_graphicsBufferAttached) {
setSourceImage(ImageBuffer::create(IntSize(m_sourceDrawingRegion.width(), m_sourceDrawingRegion.height()), ColorSpaceDeviceRGB, renderingMode()));
m_graphicsBufferAttached = true;
}
m_sourceGraphic->clearResult();
lastEffect()->clearResult();
}
LayoutRect FilterEffectRenderer::computeSourceImageRectForDirtyRect(const LayoutRect& filterBoxRect, const LayoutRect& dirtyRect)
{
if (hasCustomShaderFilter()) {
// When we have at least a custom shader in the chain, we need to compute the whole source image, because the shader can
// reference any pixel and we cannot control that.
return filterBoxRect;
}
// The result of this function is the area in the "filterBoxRect" that needs to be repainted, so that we fully cover the "dirtyRect".
FloatRect rectForRepaint = dirtyRect;
rectForRepaint.move(-filterBoxRect.location().x(), -filterBoxRect.location().y());
float inf = std::numeric_limits<float>::infinity();
FloatRect clipRect = FloatRect(FloatPoint(-inf, -inf), FloatSize(inf, inf));
rectForRepaint = lastEffect()->getSourceRect(rectForRepaint, clipRect);
rectForRepaint.move(filterBoxRect.location().x(), filterBoxRect.location().y());
rectForRepaint.intersect(filterBoxRect);
return LayoutRect(rectForRepaint);
}
void FilterEffectRenderer::apply()
{
lastEffect()->apply();
}
void FilterEffectRenderer::apply()
{
RefPtr<FilterEffect> effect = lastEffect();
effect->apply();
effect->transformResultColorSpace(ColorSpaceDeviceRGB);
}
