void StyleResourceLoader::loadPendingShaders(RenderStyle* style, const ElementStyleResources& elementStyleResources)
{
if (!style->hasFilter() || !elementStyleResources.hasPendingShaders())
return;
Vector<RefPtr<FilterOperation> >& filterOperations = style->mutableFilter().operations();
for (unsigned i = 0; i < filterOperations.size(); ++i) {
RefPtr<FilterOperation> filterOperation = filterOperations.at(i);
if (filterOperation->getOperationType() == FilterOperation::CUSTOM) {
CustomFilterOperation* customFilter = static_cast<CustomFilterOperation*>(filterOperation.get());
ASSERT(customFilter->program());
StyleCustomFilterProgram* program = static_cast<StyleCustomFilterProgram*>(customFilter->program());
// Note that the StylePendingShaders could be already resolved to StyleFetchedShaders. That's because the rule was matched before.
// However, the StyleCustomFilterProgram that was initially created could have been removed from the cache in the meanwhile,
// meaning that we get a new StyleCustomFilterProgram here that is not yet in the cache, but already has loaded StyleShaders.
if (!program->hasPendingShaders() && program->inCache())
continue;
RefPtr<StyleCustomFilterProgram> styleProgram = m_customFilterProgramCache->lookup(program);
if (styleProgram.get()) {
customFilter->setProgram(styleProgram.release());
} else {
if (program->vertexShader() && program->vertexShader()->isPendingShader()) {
CSSShaderValue* shaderValue = static_cast<StylePendingShader*>(program->vertexShader())->cssShaderValue();
program->setVertexShader(shaderValue->resource(m_fetcher));
}
if (program->fragmentShader() && program->fragmentShader()->isPendingShader()) {
CSSShaderValue* shaderValue = static_cast<StylePendingShader*>(program->fragmentShader())->cssShaderValue();
program->setFragmentShader(shaderValue->resource(m_fetcher));
}
m_customFilterProgramCache->add(program);
}
}
}
}
