[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 Samuel Pitoiset changed: What|Removed |Added Resolution|--- |FIXED

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #12 from Matias N. Goldberg --- I can confirm applying the patch you uploaded (plus LLVM's patch of course) fixes the problem. Thank you. -- You are receiving this mail because: You are the assignee for

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #11 from Nicolai Hähnle --- Created attachment 129675 --> https://bugs.freedesktop.org/attachment.cgi?id=129675=edit Mesa patch Yes, you need this patch for Mesa as well. I'm going to pick up the LLVM patch

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #10 from Matias N. Goldberg --- I've built LLVM 5.0 from latest SVN. I've applied the patch from https://reviews.llvm.org/D26348 The issue still persists. I don't know if anything else was needed (e.g.

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #9 from Matias N. Goldberg --- Thanks for the referral. I commented there, and they replied back with a potential fix: > I believe it is very easy to fix, no need to change LLVM: marking the texture >

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #8 from Bas Nieuwenhuizen --- I think this is the issue described in https://reviews.llvm.org/D26348 Not idea when the fix is going to go through though. -- You are receiving this mail because: You are

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #7 from Matias N. Goldberg --- Analyzing the ASM it's clear what's happening: the 3.9.1 version branches everything. The 4.0 version branches the calculations, then at the end uses readfirstlane (this is

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #6 from Matias N. Goldberg --- Created attachment 129536 --> https://bugs.freedesktop.org/attachment.cgi?id=129536=edit ASM from 3.9.1 -- You are receiving this mail because: You are the assignee for the

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #5 from Matias N. Goldberg --- Created attachment 129535 --> https://bugs.freedesktop.org/attachment.cgi?id=129535=edit ASM 4.0 Those readfirstlane instructions are incredibly suspicious -- You are

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #4 from Matias N. Goldberg --- Created attachment 129534 --> https://bugs.freedesktop.org/attachment.cgi?id=129534=edit IR Generated by LLVM 4.0 -- You are receiving this mail because: You are the

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #3 from Matias N. Goldberg --- Created attachment 129533 --> https://bugs.freedesktop.org/attachment.cgi?id=129533=edit IR Generated by LLVM 3.9.1 Took me a while to find the IR out of all the noise. You

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #2 from Matias N. Goldberg --- Created attachment 129532 --> https://bugs.freedesktop.org/attachment.cgi?id=129532=edit Vertex Shader used to receive these shadows (already stripped down & with tint) --

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 --- Comment #1 from Matias N. Goldberg --- Created attachment 129531 --> https://bugs.freedesktop.org/attachment.cgi?id=129531=edit Pixel Shader used to receive these shadows (already stripped down & with tint) --

[Bug 99780] Flickering artifacts in radeonsi driver with divergent texture reads.

https://bugs.freedesktop.org/show_bug.cgi?id=99780 Bug ID: 99780 Summary: Flickering artifacts in radeonsi driver with divergent texture reads. Product: Mesa Version: unspecified Hardware: x86-64 (AMD64)