--- cvsroot/libgender/material.C	2004/12/10 05:37:09	1.53
+++ cvsroot/libgender/material.C	2004/12/11 00:17:28	1.54
@@ -94,10 +94,14 @@
         
         // TODO: negative z is not calculated in an acceptable way, clipping does horrible things(?)
         lz = z (vout.position);
+#if 0
+        lz = (log (max (lz, 0) + 1) / log (1e18)) - 1;
+#else
         lz = ifelse (lz <= 0,
                         0,
                         log (lz + 1) / log (1e18)
                     ) - 1;
+#endif
         z (vout.position) = lz * w (vout.position);
       }