dri_interface: note introduction of various __DRItexBufferExtension members

Note the member function releaseTexBuffer was added without
bumping spec version, and currently no drivers implement it.

v2: releaseTexBuffer was introduced by version 3

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
1 file changed