diff options
Diffstat (limited to 'servers/rendering/renderer_viewport.cpp')
| -rw-r--r-- | servers/rendering/renderer_viewport.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/servers/rendering/renderer_viewport.cpp b/servers/rendering/renderer_viewport.cpp index 781d29ffaa..4d6435f48a 100644 --- a/servers/rendering/renderer_viewport.cpp +++ b/servers/rendering/renderer_viewport.cpp @@ -41,14 +41,31 @@ static Transform2D _canvas_get_transform(RendererViewport::Viewport *p_viewport, RendererCanvasCull::Canvas *p_canvas, RendererViewport::Viewport::CanvasData *p_canvas_data, const Vector2 &p_vp_size) { Transform2D xf = p_viewport->global_transform; + Vector2 pixel_snap_offset; + if (p_viewport->snap_2d_transforms_to_pixel) { + // We use `floor(p + 0.5)` to snap canvas items, but `ceil(p - 0.5)` + // to snap viewport transform because the viewport transform is inverse + // to the camera transform. Also, if the viewport size is not divisible + // by 2, the center point is offset by 0.5 px and we need to add 0.5 + // before rounding to cancel it out. + pixel_snap_offset.x = (p_viewport->size.width % 2) ? 0.0 : -0.5; + pixel_snap_offset.y = (p_viewport->size.height % 2) ? 0.0 : -0.5; + } + float scale = 1.0; if (p_viewport->canvas_map.has(p_canvas->parent)) { Transform2D c_xform = p_viewport->canvas_map[p_canvas->parent].transform; + if (p_viewport->snap_2d_transforms_to_pixel) { + c_xform.columns[2] = (c_xform.columns[2] * p_canvas->parent_scale + pixel_snap_offset).ceil() / p_canvas->parent_scale; + } xf = xf * c_xform; scale = p_canvas->parent_scale; } Transform2D c_xform = p_canvas_data->transform; + if (p_viewport->snap_2d_transforms_to_pixel) { + c_xform.columns[2] = (c_xform.columns[2] + pixel_snap_offset).ceil(); + } xf = xf * c_xform; if (scale != 1.0 && !RSG::canvas->disable_scale) { |