renderer.set_texture("source", &src, &nearest_sampler);
renderer.set_texture("blurred", &target[1]->get_target_texture(COLOR_ATTACHMENT), &linear_sampler);
renderer.set_shader_program(&combine_shader);
renderer.set_texture("source", &src, &nearest_sampler);
renderer.set_texture("blurred", &target[1]->get_target_texture(COLOR_ATTACHMENT), &linear_sampler);
renderer.set_shader_program(&combine_shader);