Eric, Looks the culprit for recent piglit regression on sandybridge that caused hang is bisected to
commit 9effc1adf1e7ba57fb3b10909762b76c1ae12f61 Author: Eric Anholt <e...@anholt.net> Date: Mon Oct 11 16:02:08 2010 -0700 i965: re-enable gen6 IF statements in the fragment shader. IF statements were getting flattened while they were broken. With Zhenyu's last fix for ENDIF's type, everything appears to have lined up to actually work. This regresses two tests: glsl1-! (not) operator (1, fail) glsl1-! (not) operator (1, pass) but fixes tests that couldn't work before because the IFs couldn't be flattened: glsl-fs-discard-01 occlusion-query-discard (and, naturally, this should be a performance improvement for apps that actually use IF statements to avoid executing a bunch of code). What may go wrong with this? QA is stalled on this to continue on running piglit.. thanks. -- Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
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