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graphics: ssd1306: fix crash in dithering

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Victoria Fischer
2026-01-05 13:03:58 +01:00
parent bac9300b7e
commit 3bf7ebc997
1 changed files with 3 additions and 3 deletions
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6
src/graphics/ssd1306.rs
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@@ -38,7 +38,7 @@ impl SsdPixel {
} }
} }
const DITHER_MAP: [u32;15] = [ const DITHER_MAP: [u16;15] = [
0b1000_0000_0000_0000, 0b1000_0000_0000_0000,
0b1000_0000_0010_0000, 0b1000_0000_0010_0000,
0b1010_0000_0010_0000, 0b1010_0000_0010_0000,
@@ -62,9 +62,9 @@ impl AdditivePixelSink<BinaryColor> for SsdPixel {
0 => (), 0 => (),
255 => self.set_pixel(pixel), 255 => self.set_pixel(pixel),
_ => { _ => {
let dither_value = DITHER_MAP[opacity as usize / 16]; let dither_value = DITHER_MAP[opacity as usize / 17];
let dither_x = self.coords.x % 4; let dither_x = self.coords.x % 4;
let dither_y = self.coords.x % 4; let dither_y = self.coords.y % 4;
if dither_value.shr(dither_x).shr(dither_y * 4).bitand(0x01) == 1 { if dither_value.shr(dither_x).shr(dither_y * 4).bitand(0x01) == 1 {
self.set_pixel(pixel); self.set_pixel(pixel);
} }