| Summary: | 99c65ba breaks rendering (flickery, eventual fail) | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Darren Salt <bugspam> |
| Component: | Drivers/Gallium/r600 | Assignee: | Default DRI bug account <dri-devel> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | major | ||
| Priority: | medium | CC: | maraeo |
| Version: | git | Keywords: | regression |
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
Linux 3.5; HD6770. 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Juniper XT [AMD Radeon HD 6000 Series] [1002:68ba] The problematic code has been disabled in Mesa master. Closing. I've rebuilt mesa with this re-enabled and I saw a lot of rendering glitches. I suspect that DISCARD_RANGE being re-enabled is the problem, although I've also built and installed an updated xf86-video-ati (cdf522f→20bfc65). My current mesa build has 1eedebc reverted; I'll re-check with that undone later. (In reply to comment #3) > I've rebuilt mesa with this re-enabled and I saw a lot of rendering > glitches. I suspect that DISCARD_RANGE being re-enabled is the problem, > although I've also built and installed an updated xf86-video-ati > (cdf522f→20bfc65). > > My current mesa build has 1eedebc reverted; I'll re-check with that undone > later. Do you still have the rendering glitches with enabled DISCARD_RANGE? If so please reopen this bug. |
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I noticed broken rendering in mesa git fairly recently. In Unvanquished (current release), the effect with its GL3 renderer is that the display becomes more and more flickery, and eventually rendering apparently ceases; the game remains otherwise responsive. Its GL ('vanilla' renderer, much as in Tremulous) is unaffected. Bisection points at the following commit; I've confirmed locally that git master with this reverted does not exhibit the broken behaviour. commit 99c65bac341f808279a8a847158ace4f058aa72e Author: Marek Olšák <maraeo@gmail.com> Date: Sun Feb 26 20:37:43 2012 +0100 r600g: implement wait-free buffer transfer for DISCARD_RANGE Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>