Function getOrCreateFromCacheInternal

Engine/EffectInstance.cpp:1473–1516

}

static void
getOrCreateFromCacheInternal(const ImageKey & key,
                             const boost::shared_ptr<ImageParams> & params,
                             bool useCache,
                             ImagePtr* image)
{
    if (!useCache) {
        image->reset( new Image(key, params) );
    } else {
        assert(params->getStorageInfo().mode != eStorageModeGLTex);

        if (params->getStorageInfo().mode == eStorageModeRAM) {
            appPTR->getImageOrCreate(key, params, image);
        } else if (params->getStorageInfo().mode == eStorageModeDisk) {
            appPTR->getImageOrCreate_diskCache(key, params, image);
        }

        if (!*image) {
            std::stringstream ss;
            ss << "Failed to allocate an image of ";
            const CacheEntryStorageInfo& info = params->getStorageInfo();
            std::size_t size = info.dataTypeSize * info.numComponents * info.bounds.area();
            ss << printAsRAM(size).toStdString();
            Dialogs::errorDialog( QCoreApplication::translate("EffectInstance", "Out of memory").toStdString(), ss.str() );

            return;
        }

        /*
         * Note that at this point the image is already exposed to other threads and another one might already have allocated it.
         * This function does nothing if it has been reallocated already.
         */
        (*image)->allocateMemory();


        /*
         * Another thread might have allocated the same image in the cache but with another RoI, make sure
         * it is big enough for us, or resize it to our needs.
         */


        (*image)->ensureBounds( params->getBounds() );
    }
}

ImagePtr
EffectInstance::convertOpenGLTextureToCachedRAMImage(const ImagePtr& image)