[Mesa-dev] [PATCH] st/mesa: don't draw if the bound element array buffer is not allocated

[Dieter Nützel]

Tested-by: Dieter Nützel <Dieter at nuetzel-hh.de>

Dieter

Am 21.03.2018 18:41, schrieb Marek Olšák:
> From: Marek Olšák <marek.olsak at amd.com>
> 
> ---
>  src/mesa/state_tracker/st_draw.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/src/mesa/state_tracker/st_draw.c 
> b/src/mesa/state_tracker/st_draw.c
> index b95a2522b2e..73f936bb4a9 100644
> --- a/src/mesa/state_tracker/st_draw.c
> +++ b/src/mesa/state_tracker/st_draw.c
> @@ -166,20 +166,27 @@ st_draw_vbo(struct gl_context *ctx,
>        }
> 
>        info.index_size = ib->index_size;
>        info.min_index = min_index;
>        info.max_index = max_index;
> 
>        if (_mesa_is_bufferobj(bufobj)) {
>           /* indices are in a real VBO */
>           info.has_user_indices = false;
>           info.index.resource = st_buffer_object(bufobj)->buffer;
> +
> +         /* Return if the bound element array buffer doesn't have any 
> backing
> +          * storage. (nothing to do)
> +          */
> +         if (!info.index.resource)
> +            return;
> +
>           start = pointer_to_offset(ib->ptr) / info.index_size;
>        } else {
>           /* indices are in user space memory */
>           info.has_user_indices = true;
>           info.index.user = ib->ptr;
>        }
> 
>        setup_primitive_restart(ctx, &info);
>     }
>     else {