diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_pt.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt.c b/src/gallium/auxiliary/draw/draw_pt.c index e0eda67c1a2..080e03dd46f 100644 --- a/src/gallium/auxiliary/draw/draw_pt.c +++ b/src/gallium/auxiliary/draw/draw_pt.c @@ -422,6 +422,7 @@ draw_vbo(struct draw_context *draw, { unsigned reduced_prim = u_reduced_prim(info->mode); unsigned instance; + unsigned index_limit; assert(info->instance_count > 0); if (info->indexed) @@ -470,11 +471,20 @@ draw_vbo(struct draw_context *draw, if (0) draw_print_arrays(draw, info->mode, info->start, MIN2(info->count, 20)); - draw->pt.max_index = util_draw_max_index(draw->pt.vertex_buffer, - draw->pt.nr_vertex_buffers, - draw->pt.vertex_element, - draw->pt.nr_vertex_elements, - info); + index_limit = util_draw_max_index(draw->pt.vertex_buffer, + draw->pt.nr_vertex_buffers, + draw->pt.vertex_element, + draw->pt.nr_vertex_elements, + info); + + if (index_limit == 0) { + /* one of the buffers is too small to do any valid drawing */ + debug_warning("draw: VBO too small to draw anything\n"); + return; + } + + draw->pt.max_index = index_limit - 1; + /* * TODO: We could use draw->pt.max_index to further narrow |