[PATCH xserver] glamor: Cannot use copies when accessing outside of composite source

Keith Packard keithp at keithp.com
Fri May 27 20:29:29 UTC 2016

Michel Dänzer <michel at daenzer.net> writes:

> From: Michel Dänzer <michel.daenzer at amd.com>
> Commit b64108fa ("glamor: Check for composite operations which are
> equivalent to copies") failed to copy conditions from exaComposite which
> ensure that the composite operation doesn't access outside of the source
> picture.

I'm confused -- the region to be copied should already have been clipped
to the source, so there shouldn't be any access outside of the source

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