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aux/vbuf: prevent uint underflow and assert if no vbs are dirty 

if this mask is 0, there is nothing to do here

Fixes: e73bf3b805 ("gallium: add start_slot parameter to set_vertex_buffers")

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10929>
This commit is contained in:
Mike Blumenkrantz 2021-05-21 10:08:01 -04:00 committed by Marge Bot
parent 1b02577209
commit 43abed919e
1 changed files with 2 additions and 1 deletions
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3
src/gallium/auxiliary/util/u_vbuf.c
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@ -1600,7 +1600,8 @@ void u_vbuf_draw_vbo(struct u_vbuf *mgr, const struct pipe_draw_info *info,
*/
u_upload_unmap(pipe->stream_uploader);
u_vbuf_set_driver_vertex_buffers(mgr);
if (mgr->dirty_real_vb_mask)
u_vbuf_set_driver_vertex_buffers(mgr);
pipe->draw_vbo(pipe, &new_info, drawid_offset, indirect, &new_draw, 1);