From 1511a742031342944d7aae38b35854fe62eaaf91 Mon Sep 17 00:00:00 2001 From: John-Mark Bell Date: Sun, 16 Feb 2014 00:24:11 +0000 Subject: GTK: fix pre-multiplication of alpha. --- gtk/bitmap.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'gtk/bitmap.c') diff --git a/gtk/bitmap.c b/gtk/bitmap.c index 4474b074f..4b14c2834 100644 --- a/gtk/bitmap.c +++ b/gtk/bitmap.c @@ -359,9 +359,9 @@ void bitmap_modified(void *vbitmap) { t = pixels[4 * pixel_loop + 3]; if (t != 0) { - r = ((r * t) >> 8) & 0xff; - g = ((g * t) >> 8) & 0xff; - b = ((b * t) >> 8) & 0xff; + r = ((r * (t + 1)) >> 8) & 0xff; + g = ((g * (t + 1)) >> 8) & 0xff; + b = ((b * (t + 1)) >> 8) & 0xff; } else { r = g = b = 0; } -- cgit v1.2.3