https://bugs.freedesktop.org/show_bug.cgi?id=107864
Bug ID: 107864 Summary: Specific Shadertoy demo renders garbage in empty parts of target surface Product: Mesa Version: git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: kode54@gmail.com QA Contact: dri-devel@lists.freedesktop.org
The following Shadertoy demo:
https://www.shadertoy.com/view/Xt3cWS
renders garbage in the top and bottom strips of the target surface, which appears to be uninitialized VRAM being copied to the display surface.
It does not appear to matter which WebGL capable browser I use to run the demo, they all replicate the issue on my RX480.
I cannot get apitrace to run on Firefox without that particular page crashing on load, and I cannot get RenderDoc to attach to the tab's process and actually capture anything.
https://bugs.freedesktop.org/show_bug.cgi?id=107864
Christopher Snowhill kode54@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Hardware|Other |x86-64 (AMD64) OS|All |Linux (All)
https://bugs.freedesktop.org/show_bug.cgi?id=107864
--- Comment #1 from Ilia Mirkin imirkin@alum.mit.edu --- Adding
else { fragColor = vec4(0); }
at the bottom of mainImage appears to "fix" it. fragColor is otherwise ending up with random values (effectively whatever happened to be in the registers, probably left over from the division check).
I don't think this is a bug in mesa.
https://bugs.freedesktop.org/show_bug.cgi?id=107864
GitLab Migration User gitlab-migration@fdo.invalid changed:
What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |MOVED Status|NEW |RESOLVED
--- Comment #2 from GitLab Migration User gitlab-migration@fdo.invalid --- -- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1327.
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