zink: guarantee surface lifetimes for shader images
these may be unset from the ctx before the draw command has completed, so we need (more) references to prevent that
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
these may be unset from the ctx before the draw command has completed, so we need (more) references to prevent that