Created attachment 43092 [details] screenshot of the problem With latest mesa git there are some messed up effects in Starcraft 2 (harvesting drones, vespene geysers, and some surfaces have solid background color insted transparent). This is with Wine 1.3.13 and GLSL disabled in Wine. (GLSL codepath works fine) I did a regression test: 68b701f5ded5f6b73a6b07cf37d862fab4836607 is the first bad commit commit 68b701f5ded5f6b73a6b07cf37d862fab4836607 Author: Tom Stellard <tstellar@gmail.com> Date: Sat Feb 5 22:39:58 2011 -0800 r300/compiler: Disable register rename pass on r500 The scheduler and the register allocator are not good enough yet to deal with the effects of the register rename pass. This was causing a 50% performance drop in Lightsmark. The pass can be re-enabled once the scheduler and the register allocator are more mature. r300 and r400 still need this pass, because it prevents a lot of shaders from using too many texture indirections. NOTE: This is a candidate for the 7.10 branch. However this looked like unlikely to cause this regression, I was quite sure it worked before register rename pass was introduced and indeed commit bbe49bc585c4fed46f55d184b463d13bddd97f1b (r300/compiler: Use presubtract operations as much as possible) was working fine. Also commit 8833f53e659e079e7ab74bb9197f9b44b1eeefe0 (r300/compiler: Enable rename_reg pass for r500 cards) alone or with 68b701f5ded5f6b73a6b07cf37d862fab4836607 manually applied worked fine, so this have led me to an idea that the actual regression happened somewhere between 8833f53e659e079e7ab74bb9197f9b44b1eeefe0 and 68b701f5ded5f6b73a6b07cf37d862fab4836607 and was hidden by the register rename pass. Finally bisecting between mentioned commits and manually applying 68b701f5ded5f6b73a6b07cf37d862fab4836607 in each step led to: 8f32c6cfc6503dd234f09fb06941803866c23c65 is the first bad commit commit 8f32c6cfc6503dd234f09fb06941803866c23c65 Author: Tom Stellard <tstellar@gmail.com> Date: Sat Jan 29 14:37:58 2011 -0800 r300/compiler: Standardize the number of bits used by swizzle fields Swizzles are now defined everywhere as a field with 12 bits that contains 4 channels worth of meaningful information. Any channel that is unused is set to RC_SWIZZLE_UNUSED. This change is necessary because rgb instructions and alpha instructions were initializing channels that would never be used (channel 3 for rgb and channels 1-3 for alpha) with 0 (aka RC_SWIZZLE_X). This made it impossible to use generic helper functions for swizzles, because sometimes a channel value of 0 meant unused and other times it meant RC_SWIZZLE_X. All hacks that tried to guess how many channels were relevant have also been removed.
Created attachment 43093 [details] screenshot without corruption for comparison BTW reverting 8f32c6cfc6503dd234f09fb06941803866c23c65 from current mesa master makes the problem go away.
Can you post the output of RADEON_DEBUG=fp,vp with the master branch and with 8f32c6cfc6503dd234f09fb06941803866c23c65 reverted?
Created attachment 43151 [details] output of RADEON_DEBUG=fp,vp with mesa master
Created attachment 43152 [details] output of RADEON_DEBUG=fp,vp with mesa master and 8f32c6cfc6503dd234f09fb06941803866c23c65 reverted
Created attachment 43154 [details] [review] Possible Fix This patch should be applied to the master branch. Does it fix the problem? If not can you post the output of RADEON_DEBUG=fp,vp with this patch applied.
(In reply to comment #5) > Created an attachment (id=43154) [details] > Possible Fix > > This patch should be applied to the master branch. Does it fix the problem? > If not can you post the output of RADEON_DEBUG=fp,vp with this patch applied. Yes, this patch fixes the problem. Thank you.
Fix in git by commit 9106b98766e36b04daf738bd81c4f86eedfa1b8d
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