Mesa (master): gallium/u_vbuf: support NULL-resources

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Module: Mesa
Branch: master
Commit: a8e8204b18697e8f45643abdd5b32b6c8f3659ac
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a8e8204b18697e8f45643abdd5b32b6c8f3659ac

Author: Erik Faye-Lund <erik.faye-lund at collabora.com>
Date:   Wed Mar  6 13:29:35 2019 +0100

gallium/u_vbuf: support NULL-resources

It's legal for a buffer-object to have a NULL-resource, but let's just
skip over it, as there's nothing to do.

Signed-off-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>

---

 src/gallium/auxiliary/util/u_vbuf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_vbuf.c b/src/gallium/auxiliary/util/u_vbuf.c
index 02a59bc0575..200bfffbd39 100644
--- a/src/gallium/auxiliary/util/u_vbuf.c
+++ b/src/gallium/auxiliary/util/u_vbuf.c
@@ -418,6 +418,9 @@ u_vbuf_translate_buffers(struct u_vbuf *mgr, struct translate_key *key,
          unsigned size = vb->stride ? num_vertices * vb->stride
                                     : sizeof(double)*4;
 
+         if (!vb->buffer.resource)
+            continue;
+
          if (offset + size > vb->buffer.resource->width0) {
             /* Don't try to map past end of buffer.  This often happens when
              * we're translating an attribute that's at offset > 0 from the