tree cd3b9af38b86f72a80e2725329b1fe3374eee478
parent 107ae27e57dc2a1ddc6bbb7ea101c1c60794423f
author Mathias Fröhlich <Mathias.Froehlich@gmx.net> 1427640777 +0200
committer Mathias Froehlich <Mathias.Froehlich@gmx.net> 1428213707 +0200

i965: Implement support for ARB_clip_control.

Switch between the two clip space definitions already available
in hardware. Update winding order dependent state according
to the clip control state.
This change did not introduce new piglit quick.test regressions on
an Ivybridge Mobile and a GM45 Express chipset.
Also it enables and passes the clip-control and clip-control-depth-precision
tests on these two chipsets.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Mathias Froehlich <Mathias.Froehlich@web.de>