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[cairo-xlib] Don't undither pseudocolor, doesn't look good

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This commit is contained in:
Behdad Esfahbod 2008-06-19 22:24:13 -04:00
parent fe41d100aa
commit d9784c8c37
1 changed files with 7 additions and 13 deletions
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20
src/cairo-xlib-surface.c
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@ -521,24 +521,17 @@ _pseudocolor_from_rgb888_dither (cairo_xlib_visual_info_t *visual_info,
}
static inline uint32_t
_pseudocolor_to_rgb888_undither (cairo_xlib_visual_info_t *visual_info,
uint32_t pixel,
int8_t dither_adjustment)
_pseudocolor_to_rgb888 (cairo_xlib_visual_info_t *visual_info,
uint32_t pixel)
{
uint32_t r, g, b;
pixel &= 0xff;
r = visual_info->colors[pixel].r;
g = visual_info->colors[pixel].g;
b = visual_info->colors[pixel].b;
if (r == g && g == b) {
dither_adjustment /= RAMP_SIZE;
return _adjust_field (r, - dither_adjustment) * 0x010101;
} else {
dither_adjustment = - visual_info->dither8_to_cube[dither_adjustment+128];
return (_adjust_field (r, dither_adjustment) << 16) |
(_adjust_field (g, dither_adjustment) << 8) |
(_adjust_field (b, dither_adjustment) );
}
return (r << 16) |
(g << 8) |
(b );
}
@ -773,7 +766,8 @@ _get_image_surface (cairo_xlib_surface_t *surface,
_field_to_8_undither (in_pixel & g_mask, g_width, g_shift, dither_adjustment) << 8 |
_field_to_8_undither (in_pixel & b_mask, b_width, b_shift, dither_adjustment));
} else {
out_pixel = _pseudocolor_to_rgb888_undither (visual_info, in_pixel, dither_adjustment);
/* Undithering pseudocolor does not look better */
out_pixel = _pseudocolor_to_rgb888 (visual_info, in_pixel);
}
row[x] = out_pixel;
}