crender = cairo_create(image);
- cairo_set_source_rgba(crender, 0.0, 0.0, 0.0, 1.0f);
- cairo_paint_with_alpha(crender, 0.0f);
+ cairo_save(crender);
+ cairo_set_operator(crender, CAIRO_OPERATOR_CLEAR);
+ cairo_paint(crender);
+ cairo_restore(crender);
cairo_scale(crender, dimensions.width / (double)unscaled_dimensions.width,
dimensions.height / (double)unscaled_dimensions.height);