Function webrender::picture::get_surface_rects

fn get_surface_rects(
    surface_index: SurfaceIndex,
    composite_mode: &PictureCompositeMode,
    parent_surface_index: SurfaceIndex,
    surfaces: &mut [SurfaceInfo],
    spatial_tree: &SpatialTree,
    max_surface_size: f32,
    force_scissor_rect: bool
) -> Option<SurfaceAllocInfo>