void gradient_node_t::do_process( const render::context_t& context)
{
gradient_fun grad( get_absolute_value<Imath::V2f>( param( "start")) / context.subsample,
get_absolute_value<Imath::V2f>( param( "end")) / context.subsample,
get_value<Imath::Color4f>( param( "startcol")),
get_value<Imath::Color4f>( param( "endcol")),
get_value<float>( param( "gamma")), aspect_ratio());
generate_pixels( grad);
if( get_value<bool>( param( "premult")))
image::premultiply( image_view(), image_view());
}
bool SkImage_Lazy::lockAsBitmap(SkBitmap* bitmap, SkImage::CachingHint chint, CachedFormat format,
const SkImageInfo& info,
SkTransferFunctionBehavior behavior) const {
if (this->lockAsBitmapOnlyIfAlreadyCached(bitmap, format)) {
return true;
}
uint32_t uniqueID = this->getUniqueID(format);
SkBitmap tmpBitmap;
SkBitmapCache::RecPtr cacheRec;
SkPixmap pmap;
if (SkImage::kAllow_CachingHint == chint) {
auto desc = SkBitmapCacheDesc::Make(uniqueID, info.width(), info.height());
cacheRec = SkBitmapCache::Alloc(desc, info, &pmap);
if (!cacheRec) {
return false;
}
} else {
if (!tmpBitmap.tryAllocPixels(info)) {
return false;
}
if (!tmpBitmap.peekPixels(&pmap)) {
return false;
}
}
ScopedGenerator generator(fSharedGenerator);
if (!generate_pixels(generator, pmap, fOrigin.x(), fOrigin.y(), behavior)) {
return false;
}
if (cacheRec) {
SkBitmapCache::Add(std::move(cacheRec), bitmap);
SkASSERT(bitmap->getPixels()); // we're locked
SkASSERT(bitmap->isImmutable());
SkASSERT(bitmap->getGenerationID() == uniqueID);
this->notifyAddedToCache();
} else {
*bitmap = tmpBitmap;
bitmap->pixelRef()->setImmutableWithID(uniqueID);
}
check_output_bitmap(*bitmap, uniqueID);
return true;
}