[Bug 89069] Lack of grass in The Talos Principle on radeonsi (native\wine\nine)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89069

--- Comment #34 from Daniel Scharrer <daniel at constexpr.org> ---
(In reply to smoki from comment #28)
>  After
> http://cgit.freedesktop.org/mesa/mesa/commit/
> ?id=c6d79ed289a75f13c65f011be870f7e43a0fedc7 which improve code quality i
> can enable unsafe-fp-math and grass is now there with trace from Comment 7
> 
>  Daniel and others, you might want to recheck this.

I can confirm that there is still grass with Mesa git-e1ae0c3 + LLVM r236436
and

diff --git a/src/gallium/drivers/radeon/radeon_llvm_emit.c.old
b/src/gallium/drivers/radeon/radeon_llvm_emit.c
index 624077c..0f9dbab 100644
--- a/src/gallium/drivers/radeon/radeon_llvm_emit.c.old
+++ b/src/gallium/drivers/radeon/radeon_llvm_emit.c
@@ -80,6 +80,10 @@ void radeon_llvm_shader_type(LLVMValueRef F, unsigned type)
        sprintf(Str, "%1d", llvm_type);

        LLVMAddTargetDependentFunctionAttr(F, "ShaderType", Str);
+
+       if (type != TGSI_PROCESSOR_COMPUTE) {
+               LLVMAddTargetDependentFunctionAttr(F, "unsafe-fp-math",
"true");
+       }
 }

I still get GPU faults with The Talos Principle, even with "unsafe-fp-math"
enabled now - although not with either of the traces I posted. I also get some
garbage rendered / flickering stuff, but I don't think it's related to
"unsafe-fp-math". I'll test more and post a new trace when I have time.

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