From: Marek Olšák <marek.olsak@amd.com>
Date: Tue, 15 May 2018 02:32:33 +0000 (-0400)
Subject: cso: check count == 0 in cso_set_vertex_buffers
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3e27b377f2c0e1644c466cdb32872b771300ffda;p=mesa.git

cso: check count == 0 in cso_set_vertex_buffers

The code didn't expect that, leading to crashes.

Fixes: 86d63b53a20a747e "gallium: remove aux_vertex_buffer_slot code"

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

diff --git a/src/gallium/auxiliary/cso_cache/cso_context.c b/src/gallium/auxiliary/cso_cache/cso_context.c
index e3d46f3c8de..2543c5ff61f 100644
--- a/src/gallium/auxiliary/cso_cache/cso_context.c
+++ b/src/gallium/auxiliary/cso_cache/cso_context.c
@@ -1147,6 +1147,9 @@ void cso_set_vertex_buffers(struct cso_context *ctx,
 {
    struct u_vbuf *vbuf = ctx->vbuf;
 
+   if (!count)
+      return;
+
    if (vbuf) {
       u_vbuf_set_vertex_buffers(vbuf, start_slot, count, buffers);
       return;