[Mesa-dev] [PATCH 06/17] radeonsi: unbind disabled shader stages to prevent useless L2 prefetches

[Marek Olšák]

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

---
 src/gallium/drivers/radeonsi/si_state_shaders.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c
index 010ce15..b3616dc 100644
--- a/src/gallium/drivers/radeonsi/si_state_shaders.c
+++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
@@ -2432,27 +2432,33 @@ bool si_update_shaders(struct si_context *sctx)
 			/* TES as VS */
 			si_pm4_bind_state(sctx, vs, sctx->tes_shader.current->pm4);
 			si_update_so(sctx, sctx->tes_shader.cso);
 		}
 	} else if (sctx->gs_shader.cso) {
 		/* VS as ES */
 		r = si_shader_select(ctx, &sctx->vs_shader, &compiler_state);
 		if (r)
 			return false;
 		si_pm4_bind_state(sctx, es, sctx->vs_shader.current->pm4);
+
+		si_pm4_bind_state(sctx, ls, NULL);
+		si_pm4_bind_state(sctx, hs, NULL);
 	} else {
 		/* VS as VS */
 		r = si_shader_select(ctx, &sctx->vs_shader, &compiler_state);
 		if (r)
 			return false;
 		si_pm4_bind_state(sctx, vs, sctx->vs_shader.current->pm4);
 		si_update_so(sctx, sctx->vs_shader.cso);
+
+		si_pm4_bind_state(sctx, ls, NULL);
+		si_pm4_bind_state(sctx, hs, NULL);
 	}
 
 	/* Update GS. */
 	if (sctx->gs_shader.cso) {
 		r = si_shader_select(ctx, &sctx->gs_shader, &compiler_state);
 		if (r)
 			return false;
 		si_pm4_bind_state(sctx, gs, sctx->gs_shader.current->pm4);
 		si_pm4_bind_state(sctx, vs, sctx->gs_shader.cso->gs_copy_shader->pm4);
 		si_update_so(sctx, sctx->gs_shader.cso);
-- 
2.7.4