08310d1d9e259c91d4db4e022376d66c23675f7d
braney
  Wed Jul 28 12:29:48 2010 -0700
add transparency for 32-bit PNG.  Tim needs it for drag scroll
diff --git src/lib/vPng.c src/lib/vPng.c
index 0b172ad..ff3c593 100644
--- src/lib/vPng.c
+++ src/lib/vPng.c
@@ -54,6 +54,9 @@
 
 /* Fill in the mg part of this structure with normal memGfx. */
 mg = mgNew(width, height);
+if (png->useTransparency)
+    mgClearPixelsTrans(mg);
+else
 mgClearPixels(mg);
 png->mg = *mg;
 freez(&mg);	/* We don't need this copy any more. */