From: Dave Airlie <airlied@redhat.com>
Date: Mon, 24 Oct 2016 21:47:13 +0000 (+1000)
Subject: radv/ac/llvm: shadow samplers only return one value.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b56b54cbf1d8e70c87a434da5350d11533e5fed8;p=mesa.git

radv/ac/llvm: shadow samplers only return one value.

The intrinsic engine asserts in llvm due to this.

Reported-by: Christoph Haag <haagch+mesadev@frickel.club>
Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 76d6d887885..21089024e00 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -3627,7 +3627,9 @@ static void visit_tex(struct nir_to_llvm_context *ctx, nir_tex_instr *instr)
 
 	result = build_tex_intrinsic(ctx, instr, &tinfo);
 
-	if (instr->op == nir_texop_query_levels)
+	if (instr->is_shadow)
+		result = LLVMBuildExtractElement(ctx->builder, result, ctx->i32zero, "");
+	else if (instr->op == nir_texop_query_levels)
 		result = LLVMBuildExtractElement(ctx->builder, result, LLVMConstInt(ctx->i32, 3, false), "");
 	else if (instr->op == nir_texop_txs &&
 		 instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE &&