https://bugs.freedesktop.org/show_bug.cgi?id=58666
Priority: medium Bug ID: 58666 Assignee: dri-devel@lists.freedesktop.org Summary: rv670 + llvm = errors. Severity: normal Classification: Unclassified OS: Linux (All) Reporter: lists@andyfurniss.entadsl.com Hardware: x86 (IA32) Status: NEW Version: git Component: Drivers/DRI/R600 Product: Mesa
I've only just tested this AGP HD3850 card with tstellar LLVM (or any llvm) as it's been out of the PC since Feb.
Both last week and now with updated llvm/mesa gits, running anything eg. gears will just flood -
EE r600_asm.c:122 r600_bytecode_get_num_operands - Need instruction operand number for 0xc.
Works OK with R600_LLVM=0
This was tested with drm-fixes kernel.
https://bugs.freedesktop.org/show_bug.cgi?id=58666
Andreas Boll andreas.boll.dev@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Component|Drivers/DRI/R600 |Drivers/Gallium/r600
https://bugs.freedesktop.org/show_bug.cgi?id=58666
--- Comment #1 from Andy Furniss lists@andyfurniss.entadsl.com --- Since mesa commit -
022122ee63b8a00afc23eaa347df934a79fb1d4c
r600g: use tables with ISA info v3
I can run demos without flooding errors, but most of them don't render anything.
The ones that do render something resemble what they should look like are all flawed/distorted eg, "textures" is almost normal but the actual textures are repeated rather than scaled to fit the surfaces.
https://bugs.freedesktop.org/show_bug.cgi?id=58666
--- Comment #2 from Tom Stellard tstellar@gmail.com --- Can you run one of the demos and post the output with the environment variable R600_DUMP_SHADERS=2
https://bugs.freedesktop.org/show_bug.cgi?id=58666
--- Comment #3 from Andy Furniss lists@andyfurniss.entadsl.com --- Created attachment 74051 --> https://bugs.freedesktop.org/attachment.cgi?id=74051&action=edit R600_DUMP_SHADERS=2 ./gears &>gears-dump
R600_DUMP_SHADERS=2 ./gears which doesn't render anything, but appears to be running OK eg. outputting sane fps stats and quitting normally with Esc.
https://bugs.freedesktop.org/show_bug.cgi?id=58666
--- Comment #4 from Tom Stellard tstellar@gmail.com --- Created attachment 74053 --> https://bugs.freedesktop.org/attachment.cgi?id=74053&action=edit Possible Fix
It looks like we were telling the backend that RV670 is an R700 GPU, when it is really an R600. R600 chips uses a slightly different instruction encoding. This patch should fix it, can you test?
https://bugs.freedesktop.org/show_bug.cgi?id=58666
--- Comment #5 from Andy Furniss lists@andyfurniss.entadsl.com --- (In reply to comment #4)
Created attachment 74053 [details] Possible Fix
It looks like we were telling the backend that RV670 is an R700 GPU, when it is really an R600. R600 chips uses a slightly different instruction encoding. This patch should fix it, can you test?
Yes, this fixes it - demos are all OK (well at least the same as my rv790) and a brief run of etqw worked.
https://bugs.freedesktop.org/show_bug.cgi?id=58666
Tom Stellard tstellar@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED
--- Comment #6 from Tom Stellard tstellar@gmail.com --- Fixed by commit 257006e2a4201c11ca5f800a74ac4aaf62a7bfc1
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