Set texture/image cache size.
The maximum size of the image cache in bytes. A non-zero value allows for caching of images that are stored in slow flash (see QUL_COPY_TO_RAM ) or in compressed form (see QUL_COMPRESSION ). The cache size must be set to at least the size of the biggest cached image. Otherwise that image cannot fit into the cache.
注意： This variable must be set before calling qul_add_target() to add an executable target, which uses caching. Otherwise, it will not take effect.
This variable was introduced in Qt Quick Ultralite 1.1.