radeonsi: change TC cache flushing strategy for textures

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>

src/gallium/drivers/radeonsi/si_descriptors.c

@@ -445,8 +445,6 @@ static void si_set_sampler_views(struct pipe_context *ctx,
 		}
 	}
 
-	sctx->b.flags |= SI_CONTEXT_INV_TC_L1 |
-			 SI_CONTEXT_INV_TC_L2;
 	si_update_descriptors(sctx, &samplers->views.desc);
 }
 
@@ -671,8 +669,6 @@ void si_update_vertex_buffers(struct si_context *sctx)
 	 * on performance (confirmed by testing). New descriptors are always
 	 * uploaded to a fresh new buffer, so I don't think flushing the const
 	 * cache is needed. */
-	sctx->b.flags |= SI_CONTEXT_INV_TC_L1 |
-			 SI_CONTEXT_INV_TC_L2;
 }
 
 

src/gallium/drivers/radeonsi/si_state.c

@@ -2004,6 +2004,12 @@ static void si_set_framebuffer_state(struct pipe_context *ctx,
 				 SI_CONTEXT_FLUSH_AND_INV_DB_META;
 	}
 
+	/* Only flush TC when changing the framebuffer state, because
+	 * the only client not using TC that can change textures is
+	 * the framebuffer. */
+	sctx->b.flags |= SI_CONTEXT_INV_TC_L1 |
+			 SI_CONTEXT_INV_TC_L2;
+
 	util_copy_framebuffer_state(&sctx->framebuffer.state, state);
 
 	sctx->framebuffer.export_16bpc = 0;