# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1528192583 -10800
# Node ID a51c2eaae9b830f9975fe7e84a727989d6e34a5b
# Parent  1036b0dcccb5c5f781ed18c849d6e2f127f66b48
Use img->ctransp for IFF ILBM mask, if set.

diff -r 1036b0dcccb5 -r a51c2eaae9b8 tools/libgfx.c
--- a/tools/libgfx.c	Tue Jun 05 12:55:17 2018 +0300
+++ b/tools/libgfx.c	Tue Jun 05 12:56:23 2018 +0300
@@ -1689,7 +1689,7 @@
 
                 // Black out any pixels with mask bit 0
                 if (!data)
-                    dp[xc] = 0;
+                    dp[xc] = img->ctransp < 0 ? 0 : img->ctransp;
             }
 
             *read += bufLen;