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| author | Emanuele Giaquinta <emanuele.giaquinta@gmail.com> | 2015-06-23 16:09:50 +0200 |
|---|---|---|
| committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-06-23 16:13:08 +0200 |
| commit | ffc87da60b2262432d56f15332b3edd15b7e00b2 (patch) | |
| tree | 00628d0f77be1bf1bb76ff0e8d29fd724ada2210 /nx-X11 | |
| parent | 8cf9283bd23a2824c16601eca10b38065374e012 (diff) | |
| download | nx-libs-ffc87da60b2262432d56f15332b3edd15b7e00b2.tar.gz nx-libs-ffc87da60b2262432d56f15332b3edd15b7e00b2.tar.bz2 nx-libs-ffc87da60b2262432d56f15332b3edd15b7e00b2.zip | |
Fix alpha premultiplication in XRenderParseColor.
Due to C arithmetic conversion rules we must use an unsigned constant (or a
cast) to perform the multiplication using unsigned arithmetic.
Fixes ArcticaProject/nx-libs#55.
Author: Emanuele Giaquinta <emanuele.giaquinta@gmail.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Rebased against NX: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Diffstat (limited to 'nx-X11')
| -rw-r--r-- | nx-X11/lib/Xrender/Color.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/nx-X11/lib/Xrender/Color.c b/nx-X11/lib/Xrender/Color.c index 4f934f038..6875204e6 100644 --- a/nx-X11/lib/Xrender/Color.c +++ b/nx-X11/lib/Xrender/Color.c @@ -85,8 +85,8 @@ XRenderParseColor(Display *dpy, char *spec, XRenderColor *def) def->blue = coreColor.blue; def->alpha = 0xffff; } - def->red = (def->red * def->alpha) / 65535; - def->green = (def->green * def->alpha) / 65535; - def->blue = (def->blue * def->alpha) / 65535; + def->red = (def->red * def->alpha) / 0xffffU; + def->green = (def->green * def->alpha) / 0xffffU; + def->blue = (def->blue * def->alpha) / 0xffffU; return 1; } |