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ac/llvm: use amdgpu-color-export/amdgpu-depth-export

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These are necessary to use the correct export target on GFX11:
https://reviews.llvm.org/D128185

Fixes artifacts on Lara in Rise of the Tomb Raider benchmark and hair in
The Witcher 3 (classic).

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20357>
This commit is contained in:
Rhys Perry 2022-12-16 12:24:40 +00:00 • committed by Marge Bot
parent d496f0b97d
commit 1174ab6d56
1 changed files with 15 additions and 0 deletions
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15
src/amd/llvm/ac_llvm_build.c
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@ -2028,6 +2028,15 @@ void ac_build_export(struct ac_llvm_context *ctx, struct ac_export_args *a)
ac_build_intrinsic(ctx, "llvm.amdgcn.exp.f32", ctx->voidt, args, 8, 0);
}
if (LLVM_VERSION_MAJOR >= 15 && a->target == V_008DFC_SQ_EXP_MRTZ) {
LLVMAddTargetDependentFunctionAttr(ctx->main_function.value, "amdgpu-depth-export", "1");
} else if (LLVM_VERSION_MAJOR >= 15 && a->target <= V_008DFC_SQ_EXP_NULL) {
/* We need this attribute even for NULL targets, so that an export is created for full-wave
* discards on GFX10+.
*/
LLVMAddTargetDependentFunctionAttr(ctx->main_function.value, "amdgpu-color-export", "1");
}
}
void ac_build_export_null(struct ac_llvm_context *ctx, bool uses_discard)
@ -4619,6 +4628,12 @@ struct ac_llvm_pointer ac_build_main(const struct ac_shader_args *args, struct a
/* Disable denormals for FP32: */
LLVMAddTargetDependentFunctionAttr(main_function, "denormal-fp-math-f32",
"preserve-sign,preserve-sign");
if (LLVM_VERSION_MAJOR >= 15 && convention == AC_LLVM_AMDGPU_PS) {
LLVMAddTargetDependentFunctionAttr(main_function, "amdgpu-depth-export", "0");
LLVMAddTargetDependentFunctionAttr(main_function, "amdgpu-color-export", "0");
}
return ctx->main_function;
}