Mesa (master): radv: fix samples_identical return value.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 67c91ef2a228b0843bdbb4b7b7128ef45e3dd71f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=67c91ef2a228b0843bdbb4b7b7128ef45e3dd71f

Author: Dave Airlie <airlied at redhat.com>
Date:   Wed Oct 19 15:43:26 2016 +1000

radv: fix samples_identical return value.

This was returning an inversion, so not doing as it should have.

We need to compare the fmask value with 0, and return the result
from that.

---

 src/amd/common/ac_nir_to_llvm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index ad32e15..e2f6bca 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -3410,6 +3410,9 @@ static void visit_tex(struct nir_to_llvm_context *ctx, nir_tex_instr *instr)
 				   txf_address, txf_count, 0xf);
 
 		result = build_tex_intrinsic(ctx, instr, &txf_info);
+
+		result = LLVMBuildExtractElement(ctx->builder, result, ctx->i32zero, "");
+		result = LLVMBuildICmp(ctx->builder, LLVMIntEQ, result, ctx->i32zero, "");
 		goto write_result;
 	}