fbo-scissor-blit: fix window case
this reads back from a RGBX visual which has no alpha channel, so the reference alpha should always be 1.0
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.
this reads back from a RGBX visual which has no alpha channel, so the reference alpha should always be 1.0