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radv: fix emitting the TCS regs on GFX9

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The primitive ID is NULL and this generates an invalid
select instruction which crashes because one operand is NULL.

This fixes crashes in The Long Journey Home, Quantum Break
and Just Cause 3 with DXVK.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106756
CC: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
(cherry picked from commit 5917761e3d)
This commit is contained in:
Samuel Pitoiset 2018-06-15 17:50:35 +02:00 • committed by Dylan Baker
parent a4609fe84f
commit c86a99adef
1 changed files with 0 additions and 1 deletions
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src/amd/vulkan/radv_nir_to_llvm.c
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@ -3051,7 +3051,6 @@ static void ac_nir_fixup_ls_hs_input_vgprs(struct radv_shader_context *ctx)
LLVMValueRef hs_empty = LLVMBuildICmp(ctx->ac.builder, LLVMIntEQ, count,
ctx->ac.i32_0, "");
ctx->abi.instance_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->rel_auto_id, ctx->abi.instance_id, "");
ctx->vs_prim_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->abi.vertex_id, ctx->vs_prim_id, "");
ctx->rel_auto_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->abi.tcs_rel_ids, ctx->rel_auto_id, "");
ctx->abi.vertex_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->abi.tcs_patch_id, ctx->abi.vertex_id, "");
}