[brlcad-commits] SF.net SVN: brlcad:[54172] brlcad/trunk/src/util/pix-png.c

[<br...@us...>]

Revision: 54172
          http://brlcad.svn.sourceforge.net/brlcad/?rev=54172&view=rev
Author:   brlcad
Date:     2013-01-14 22:43:58 +0000 (Mon, 14 Jan 2013)
Log Message:
-----------
don't set the gAMA chunk if gamma is negative/unset, quells warnings on default use

Modified Paths:
--------------
    brlcad/trunk/src/util/pix-png.c

Modified: brlcad/trunk/src/util/pix-png.c
===================================================================
--- brlcad/trunk/src/util/pix-png.c	2013-01-14 20:35:44 UTC (rev 54171)
+++ brlcad/trunk/src/util/pix-png.c	2013-01-14 22:43:58 UTC (rev 54172)
@@ -165,7 +165,8 @@
      * representing the value needed to un-do the 2.2 correction
      * auto-applied by PowerPoint for PC monitors.
      */
-    png_set_gAMA(png_p, info_p, out_gamma);
+    if (out_gamma > 0.0)
+	png_set_gAMA(png_p, info_p, out_gamma);
 
     png_write_info(png_p, info_p);
     png_write_image(png_p, scanlines);

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