[Mesa-dev] [PATCH] draw: fix division-by-zero for empty geometry shaders

[Dave Airlie]

On 2 March 2015 at 01:23, Marek Olšák <maraeo at gmail.com> wrote:
> From: Marek Olšák <marek.olsak at amd.com>
>
Reviewed-by: Dave Airlie <airlied at redhat.com>

> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89372
> ---
>  src/gallium/auxiliary/draw/draw_pt_emit.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/src/gallium/auxiliary/draw/draw_pt_emit.c b/src/gallium/auxiliary/draw/draw_pt_emit.c
> index b215c5f..d1eafd8 100644
> --- a/src/gallium/auxiliary/draw/draw_pt_emit.c
> +++ b/src/gallium/auxiliary/draw/draw_pt_emit.c
> @@ -113,8 +113,11 @@ draw_pt_emit_prepare(struct pt_emit *emit,
>        emit->translate = translate_cache_find(emit->cache, &hw_key);
>     }
>
> -   *max_vertices = (draw->render->max_vertex_buffer_bytes /
> -                    (vinfo->size * 4));
> +   if (!vinfo->size)
> +      *max_vertices = 0;
> +   else
> +      *max_vertices = (draw->render->max_vertex_buffer_bytes /
> +                       (vinfo->size * 4));
>  }
>
>
> --
> 2.1.0
>
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