Mesa (main): st/mesa: don't crash when draw indirect buffer has no storage

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Module: Mesa
Branch: main
Commit: 520300ad2202adbe652909839b94f6eedf489aa5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=520300ad2202adbe652909839b94f6eedf489aa5

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Thu Oct 21 15:40:20 2021 -0400

st/mesa: don't crash when draw indirect buffer has no storage

Fixes: 22f6624ed318e8 - gallium: separate indirect stuff from pipe_draw_info

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13471>

---

 src/mesa/state_tracker/st_draw.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c
index bfe443781c4..f488a69b948 100644
--- a/src/mesa/state_tracker/st_draw.c
+++ b/src/mesa/state_tracker/st_draw.c
@@ -262,6 +262,10 @@ st_indirect_draw_vbo(struct gl_context *ctx,
    indirect.buffer = st_buffer_object(indirect_data)->buffer;
    indirect.offset = indirect_offset;
 
+   /* Viewperf2020/Maya draws with a buffer that has no storage. */
+   if (!indirect.buffer)
+      return;
+
    if (!st->has_multi_draw_indirect) {
       int i;