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fix scissor DPI issue once and for all? the math was backwards [rebuild]

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This commit is contained in:
Dustin Carlino 2020-01-14 10:50:18 -08:00
parent 3482d61c0d
commit f613b003a4
1 changed files with 6 additions and 4 deletions
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10
ezgui/src/drawing.rs
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@ -208,12 +208,14 @@ impl<'a> GfxCtx<'a> {
// TODO Stateful API :(
pub fn enable_clipping(&mut self, rect: ScreenRectangle) {
assert!(self.params.scissor.is_none());
// This is a bit weird, but the ScreenRectangle and window dims are already scaled up, so
// here, we actually have to scale down!
self.params.scissor = Some(glium::Rect {
left: (self.canvas.hidpi_factor * rect.x1) as u32,
left: (rect.x1 / self.canvas.hidpi_factor) as u32,
// Y-inversion
bottom: (self.canvas.hidpi_factor * (self.canvas.window_height - rect.y2)) as u32,
width: (self.canvas.hidpi_factor * (rect.x2 - rect.x1)) as u32,
height: (self.canvas.hidpi_factor * (rect.y2 - rect.y1)) as u32,
bottom: ((self.canvas.window_height - rect.y2) / self.canvas.hidpi_factor) as u32,
width: ((rect.x2 - rect.x1) / self.canvas.hidpi_factor) as u32,
height: ((rect.y2 - rect.y1) / self.canvas.hidpi_factor) as u32,
});
}