xcur2png/trunk/0001-fix-wrong-math.patch

   1 From cda8f7af382f5c5f1e9a395eb03e2b819770d499 Mon Sep 17 00:00:00 2001
   2 From: Yuji Saeki <44311901+YujiSaeki@users.noreply.github.com>
   3 Date: Mon, 1 Jun 2020 22:32:16 +0200
   4 Subject: [PATCH 1/1] fix wrong math
   5
   6 Signed-off-by: Christian Hesse <mail@eworm.de>
   7 ---
   8  xcur2png.c | 6 +++---
   9  1 file changed, 3 insertions(+), 3 deletions(-)
  10
  11 diff --git a/xcur2png.c b/xcur2png.c
  12 index 8723a10..f7dd95d 100644
  13 --- a/xcur2png.c
  14 +++ b/xcur2png.c
  15 @@ -586,9 +586,9 @@ int writePngFileFromXcur (const XcursorDim width, const XcursorDim height,
  16      unsigned int red = (pixels[i]>>16) & 0xff;
  17      unsigned int green = (pixels[i]>>8) & 0xff;
  18      unsigned int blue = pixels[i] & 0xff;
  19 -    red = (div (red * 256, alpha).quot) & 0xff;
  20 -    green = (div (green * 256,  alpha).quot) & 0xff;
  21 -    blue = (div (blue * 256, alpha).quot) & 0xff;
  22 +    red = (div (red * 255, alpha).quot) & 0xff;
  23 +    green = (div (green * 255,  alpha).quot) & 0xff;
  24 +    blue = (div (blue * 255, alpha).quot) & 0xff;
  25      pix[i] = (alpha << 24) + (red << 16) + (green << 8) + blue;
  26    }
  27