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🐛 Fix viewer tile artifacts

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Alejandro Alonso 2026-06-19 12:51:17 +02:00 committed by GitHub
parent 6bc94ad6c6
commit b9ebe9f4ee
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GPG Key ID: B5690EEEBB952194
1 changed files with 12 additions and 2 deletions
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14
render-wasm/src/render.rs
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@ -988,8 +988,7 @@ impl RenderState {
// Viewer masked passes render a partial scene. Reusing the tile texture cache would
// SrcOver-blend onto textures from the previous pass and leak pixels into the blob.
// `render_sync_shape` (viewer/thumbnails) uses the same direct backbuffer path.
if self.viewer_masked_pass() || self.viewer_render_root.is_some() {
if self.viewer_masked_pass() {
// Use viewbox-aligned bounds (not grid-snapped) to match interactive-transform
// compositing and avoid a visible offset vs the DOM canvas.
let tile_rect = self.get_current_tile_bounds()?;
@ -2347,6 +2346,17 @@ impl RenderState {
timestamp: i32,
) -> Result<FrameType> {
self.render_shape_tree_partial(base_object, tree, timestamp, false)?;
// Same composition as `continue_render_loop` for full frames: snapshot only the
// drawable tile rect into the atlas (no blur-margin overlap), then blit once.
if !self.viewer_masked_pass() {
self.surfaces.draw_tile_atlas_to_backbuffer(
&self.viewbox,
&self.tile_viewbox,
self.background_color,
);
}
let saved_preview_mode = self.preview_mode;
self.preview_mode = true;
self.present_frame(tree);