diff -r c117e17b90bc -r 34eb5cc72241 hedgewars/uConsts.pas
--- a/hedgewars/uConsts.pas	Mon Aug 26 14:27:03 2019 -0400
+++ b/hedgewars/uConsts.pas	Mon Aug 26 23:17:17 2019 +0300
@@ -110,6 +110,8 @@
     ifCritical    = $00000002;  // image is critical for gameplay (exit game if unable to load)
     ifColorKey    = $00000004;  // image uses transparent pixels (color keying)
     ifIgnoreCaps  = $00000008;  // ignore hardware capabilities when loading (i.e. image will not be drawn using OpenGL)
+    ifDigestAlpha = $00000010;  // add alpha channel to the digest
+    ifDigestAll   = $00000020;  // add all channels to the digest
 
     // texture priority (allows OpenGL to keep frequently used textures in video memory more easily)
     tpLowest      = 0.00;