From: Øyvind Kolås <pippin@gimp.org>
Date: Thu, 27 Jan 2022 03:33:04 +0000 (+0100)
Subject: sse2-float: correctly handle associted alpha in remainder
X-Git-Tag: archive/raspbian/1%0.1.106-3+rpi1^2~15^2~4^2~15
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=debe24980e0e17758e3c88721455d58754856701;p=babl.git

sse2-float: correctly handle associted alpha in remainder
---

diff --git a/extensions/sse2-float.c b/extensions/sse2-float.c
index 3757ffe..e4cd7cf 100644
--- a/extensions/sse2-float.c
+++ b/extensions/sse2-float.c
@@ -157,11 +157,8 @@ conv_rgbAF_linear_rgbaF_linear_shuffle (const Babl  *conversion,
   while (remainder--)
     {
       float alpha = src[3];
-      float recip;
-      if (alpha <= 0.0f)
-        recip = 0.0f;
-      else
-        recip = 1.0f/alpha;
+      float used_alpha = babl_epsilon_for_zero_float (alpha);
+      float recip = 1.0f/used_alpha;
       dst[0] = src[0] * recip;
       dst[1] = src[1] * recip;
       dst[2] = src[2] * recip;