From 2b1677860e736b43cba3a466908470a4e9ae4d3a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Fri, 11 Jun 2021 20:18:28 -0400
Subject: [PATCH] gallium/u_threaded: don't update valid_buffer_range for
 read-only shader buffers

Reviewed-by: Rob Clark <robdclark@chromium.org>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11335>
---
 src/gallium/auxiliary/util/u_threaded_context.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_threaded_context.c b/src/gallium/auxiliary/util/u_threaded_context.c
index 3cb14d3565e..54ee6e76dc7 100644
--- a/src/gallium/auxiliary/util/u_threaded_context.c
+++ b/src/gallium/auxiliary/util/u_threaded_context.c
@@ -1475,9 +1475,11 @@ tc_set_shader_buffers(struct pipe_context *_pipe,
 
             tc_bind_buffer(&tc->shader_buffers[shader][start + i], next, &tres->b);
 
-            util_range_add(&tres->b, &tres->valid_buffer_range,
-                           src->buffer_offset,
-                           src->buffer_offset + src->buffer_size);
+            if (writable_bitmask & BITFIELD_BIT(i)) {
+               util_range_add(&tres->b, &tres->valid_buffer_range,
+                              src->buffer_offset,
+                              src->buffer_offset + src->buffer_size);
+            }
          } else {
             tc_unbind_buffer(&tc->shader_buffers[shader][start + i]);
          }