Created attachment 61997 [details] [review]
[PATCH] Revert "r600g: set round_mode to truncate and get rid of  tgsi_f2i on evergreen"

I see some regression with both compilers. Have you tested it with non-llvm compiler? IIRC you are using BARTS card?

It seems the issue is triggered by the combination of commits:

60bf0f05 "r600g: set round_mode to truncate and get rid of tgsi_f2i on evergreen"  and 
04e32400 "gallium: remove PIPE_SHADER_CAP_OUTPUT_READ".

Reverting any of them fixes the problem for me, I'll try to figure out what exactly is going wrong. You might want to test the attached patch (reverts first commit).

In fact it seems the problem is with the first commit, second just made it much more noticeable.

I only see this with the LLVM compiler, the old one seems fine. There is a texture flickering on some surfaces, but that affects both of them (I use the level Q1DM6 for testing).

Yes, I use a BARTS card (HD6850).

(In reply to comment #3)
> I only see this with the LLVM compiler, the old one seems fine. There is a
> texture flickering on some surfaces, but that affects both of them (I use the
> level Q1DM6 for testing).

That flickering is the issue I was talking about. The patch attached earlier should help with it.

I don't see anything wrong with both compilers after applying the patch. If there is another issue and the patch doesn't fix it, could you provide some screenshots and hints how to reproduce it? 

> 
> Yes, I use a BARTS card (HD6850).

Created attachment 62012 [details]
nexuiz problem.jpg

Attaching screenshot of the problem.

Created attachment 62013 [details]
nexuiz settings.jpg

These are the settings I use. Basicaly everything is enabled. On the video tab gl2 shaders and occlusion queries are enabled, vbos for vertices and triangles and texture compression is set to good.

If I disable offset mapping, texturing returns to normal. Relief mapping is indifferent, and so are all the other settings.

I can't reproduce it neither with latest mesa, nor with 7a75e7d6. 

Do you have any errors in dmesg? You might want to try latest mesa, kernel, etc. Also you might want to try debug build of the mesa (with --enable-debug) to see if there are any errors/asserts.

If it doesn't help, please attach the shader dump (output with "R600_DUMP_SHADERS=1" env var).

Created attachment 62020 [details]
nexuiz_stderr.txt.gz

(In reply to comment #7)
> I can't reproduce it neither with latest mesa, nor with 7a75e7d6. 
> 
> Do you have any errors in dmesg? You might want to try latest mesa, kernel,
> etc. Also you might want to try debug build of the mesa (with --enable-debug)
> to see if there are any errors/asserts.
I'm using kernel 3.3.1 with the tiling patches from J. Glisse. I'll try 3.4 later. I always compile with enable-debug, but there are no errors printed. There is nothing in dmesg either.

> 
> If it doesn't help, please attach the shader dump (output with
> "R600_DUMP_SHADERS=1" env var).
Attaching stderr. I just started the game, loaded Q1DM3, and exited.

Created attachment 62057 [details] [review]
[PATCH] radeon/llvm: fix sampler index in llvm_emit_tex

Does this patch help?

(In reply to comment #9)
> Created attachment 62057 [details] [review] [review]
> [PATCH] radeon/llvm: fix sampler index in llvm_emit_tex
> 
> Does this patch help?
Yes, the patch fixes it. I also tried the revert patch, and that fixes the lightmap flickering.

I see the fixes were pushed to mesa master. Closing.