[Mesa-dev] [PATCH] radeonsi: skip ES output stores for undefined output components

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/drivers/radeonsi/si_shader.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index e8d08cd8e7f..0d24c3af10a 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -3591,20 +3591,23 @@ static void si_llvm_emit_es_epilogue(struct ac_shader_abi *abi,
 		int param;
 
 		if (info->output_semantic_name[i] == TGSI_SEMANTIC_VIEWPORT_INDEX ||
 		    info->output_semantic_name[i] == TGSI_SEMANTIC_LAYER)
 			continue;
 
 		param = si_shader_io_get_unique_index(info->output_semantic_name[i],
 						      info->output_semantic_index[i]);
 
 		for (chan = 0; chan < 4; chan++) {
+			if (!(info->output_usagemask[i] & (1 << chan)))
+				continue;
+
 			LLVMValueRef out_val = LLVMBuildLoad(ctx->ac.builder, addrs[4 * i + chan], "");
 			out_val = ac_to_integer(&ctx->ac, out_val);
 
 			/* GFX9 has the ESGS ring in LDS. */
 			if (ctx->screen->info.chip_class >= GFX9) {
 				lds_store(ctx, param * 4 + chan, lds_base, out_val);
 				continue;
 			}
 
 			ac_build_buffer_store_dword(&ctx->ac,
-- 
2.17.0