892         let device_ref_point = world_ref_point * frame_context.device_pixel_scale;  in pre_update()
893         let device_world_rect = frame_context.screen_world_rect * frame_context.device_pixel_scale;  in pre_update()
894         let pic_device_rect = pic_world_rect * frame_context.device_pixel_scale;  in pre_update()
932 …  let tile_device_pos = (tile.world_rect.origin + scroll_delta) * frame_context.device_pixel_scale;  in pre_update()
942             p0.x / frame_context.device_pixel_scale.0,  in pre_update()
943             p0.y / frame_context.device_pixel_scale.0,  in pre_update()
946             tile_width as f32 / frame_context.device_pixel_scale.0,  in pre_update()
947             tile_height as f32 / frame_context.device_pixel_scale.0,  in pre_update()
969                         px / frame_context.device_pixel_scale.0,  in pre_update()
970                         py / frame_context.device_pixel_scale.0,  in pre_update()
1502                         let tile_device_rect = world_rect * frame_context.device_pixel_scale;  in post_update()
1529                             world_rect * frame_context.device_pixel_scale,  in post_update()
1550 …        let src_origin = (visible_rect.origin * frame_context.device_pixel_scale).round().to_i32();  in post_update()
1560 …                  let dest_rect = (valid_rect * frame_context.device_pixel_scale).round().to_i32();  in post_update()
2888             frame_context.device_pixel_scale,  in prepare_for_render()
2912                 let blur_std_deviation = blur_radius * frame_context.device_pixel_scale.0;  in prepare_for_render()
2914 …      let inflation_factor = (inflation_factor * frame_context.device_pixel_scale.0).ceil() as i32;  in prepare_for_render()
2940                     frame_context.device_pixel_scale,  in prepare_for_render()
2971                 let blur_std_deviation = blur_radius * frame_context.device_pixel_scale.0;  in prepare_for_render()
2994                     frame_context.device_pixel_scale,  in prepare_for_render()
3059                     frame_context.device_pixel_scale,  in prepare_for_render()
3097                     frame_context.device_pixel_scale,  in prepare_for_render()
3127                     frame_context.device_pixel_scale,  in prepare_for_render()
3158     device_pixel_scale: DevicePixelScale,  in calculate_screen_uv()
3164         raster_pos.x * device_pixel_scale.0,  in calculate_screen_uv()
3165         raster_pos.y * device_pixel_scale.0,  in calculate_screen_uv()
3194     device_pixel_scale: DevicePixelScale,  in calculate_uv_rect_kind()
3203         device_pixel_scale,  in calculate_uv_rect_kind()
3211         device_pixel_scale,  in calculate_uv_rect_kind()
3219         device_pixel_scale,  in calculate_uv_rect_kind()
3227         device_pixel_scale,  in calculate_uv_rect_kind()