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Fix openlibm

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This commit is contained in:
Jeremy Soller 2016-09-22 16:57:26 -06:00
parent b0802162ea
commit e4490b06de
2 changed files with 21 additions and 16 deletions
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35
drivers/vesad/src/display.rs
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@ -87,22 +87,27 @@ impl Display {
let scale = Scale::uniform(16.0);
let v_metrics = font.v_metrics(scale);
let point = point(0.0, v_metrics.ascent);
glyph.scaled(scale).positioned(point).draw(|off_x, off_y, v| {
let off_x = x + off_x as usize;
let off_y = y + off_y as usize;
// There's still a possibility that the glyph clips the boundaries of the bitmap
if off_x < width && off_y < height {
let v_u = (v * 255.0) as u32;
let r = ((color >> 16) & 0xFF * v_u)/255;
let g = ((color >> 8) & 0xFF * v_u)/255;
let b = (color & 0xFF * v_u)/255;
let c = (r << 16) | (g << 8) | b;
let glyph = glyph.scaled(scale).positioned(point);
if let Some(bb) = glyph.pixel_bounding_box() {
glyph.draw(|off_x, off_y, v| {
let off_x = x + (off_x as i32 + bb.min.x) as usize;
let off_y = y + (off_y as i32 + bb.min.y) as usize;
// There's still a possibility that the glyph clips the boundaries of the bitmap
if off_x < width && off_y < height {
let v_u = (v * 255.0) as u32;
if v_u > 0 {
let r = (((color >> 16) & 0xFF) * v_u)/255;
let g = (((color >> 8) & 0xFF) * v_u)/255;
let b = ((color & 0xFF) * v_u)/255;
let c = (r << 16) | (g << 8) | b;
let index = (off_y * width + off_x) as isize;
unsafe { *offscreen.offset(index) = c; }
unsafe { *onscreen.offset(index) = c; }
}
});
let index = (off_y * width + off_x) as isize;
unsafe { *offscreen.offset(index) = c; }
unsafe { *onscreen.offset(index) = c; }
}
}
});
}
}
}