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wezterm: blow more caches when scaling changes

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The recent addition of dynamic fallback resolution highlighted this
issue.

The test scenario is:

1. Output some glyphs that need dynamic fallback
2. ctrl-+ to change the font scaling
3. rasterization fails because of some bad cached state; the font_idx's
   were invalidated by the scale change which reset the dynamically
   discovered fallback fonts.

The resolution is to blow the glyph and shape caches when scaling
is changed.
This commit is contained in:
Wez Furlong 2020-11-25 16:13:53 -08:00
parent 80488ea14d
commit 164adb78e3
1 changed files with 3 additions and 1 deletions
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4
wezterm-gui/src/gui/termwindow.rs
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@ -766,7 +766,7 @@ impl WindowCallbacks for TermWindow {
break;
}
} else {
log::error!("paint_opengl_pass failed: {}", err);
log::error!("paint_opengl_pass failed: {:#}", err);
break;
}
}
@ -2062,6 +2062,8 @@ impl TermWindow {
self.fonts
.change_scaling(font_scale, dimensions.dpi as f64 / 96.);
self.render_metrics = RenderMetrics::new(&self.fonts);
self.render_state.opengl().glyph_cache.borrow_mut().clear();
self.shape_cache.borrow_mut().clear();
self.recreate_texture_atlas(None)
.expect("failed to recreate atlas");