From: Marek Olšák <marek.olsak@amd.com>
Date: Fri, 17 Nov 2017 03:56:13 +0000 (+0100)
Subject: radeonsi: don't write undefined output channels to LDS in LS
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f783677a82e08a7510da22809548863e3620a103;p=mesa.git

radeonsi: don't write undefined output channels to LDS in LS

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
---

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index bca0ca92248..16036e31637 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -3176,6 +3176,9 @@ static void si_llvm_emit_ls_epilogue(struct lp_build_tgsi_context *bld_base)
 					LLVMConstInt(ctx->i32, param * 4, 0), "");
 
 		for (chan = 0; chan < 4; chan++) {
+			if (!(info->output_usagemask[i] & (1 << chan)))
+				continue;
+
 			lds_store(bld_base, chan, dw_addr,
 				  LLVMBuildLoad(ctx->ac.builder, out_ptr[chan], ""));
 		}