diff options
Diffstat (limited to 'source/blender/draw/intern/draw_volume.cc')
| -rw-r--r-- | source/blender/draw/intern/draw_volume.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/source/blender/draw/intern/draw_volume.cc b/source/blender/draw/intern/draw_volume.cc index 8d9a6f486e2..c4e58ab24cb 100644 --- a/source/blender/draw/intern/draw_volume.cc +++ b/source/blender/draw/intern/draw_volume.cc @@ -129,12 +129,14 @@ static DRWShadingGroup *drw_volume_object_grids_init(Object *ob, volume_infos.temperature_bias = 0.0f; /* Bind volume grid textures. */ - int grid_id = 0; + int grid_id = 0, grids_len = 0; LISTBASE_FOREACH (GPUMaterialAttribute *, attr, attrs) { const VolumeGrid *volume_grid = BKE_volume_grid_find_for_read(volume, attr->name); const DRWVolumeGrid *drw_grid = (volume_grid) ? DRW_volume_batch_cache_get_grid(volume, volume_grid) : nullptr; + /* Count number of valid attributes. */ + grids_len += int(volume_grid != nullptr); /* Handle 3 cases here: * - Grid exists and texture was loaded -> use texture. @@ -145,7 +147,13 @@ static DRWShadingGroup *drw_volume_object_grids_init(Object *ob, grid_default_texture(attr->default_value); DRW_shgroup_uniform_texture(grp, attr->input_name, grid_tex); - copy_m4_m4(volume_infos.grids_xform[grid_id++].ptr(), drw_grid->object_to_texture); + copy_m4_m4(volume_infos.grids_xform[grid_id++].ptr(), + (drw_grid) ? drw_grid->object_to_texture : g_data.dummy_grid_mat); + } + /* Render nothing if there is no attribute for the shader to render. + * This also avoids an assert caused by the bounding box being zero in size. */ + if (grids_len == 0) { + return nullptr; } volume_infos.push_update(); |