--- a/src/blitter/32bpp_base.hpp	Fri Aug 15 19:18:55 2008 +0000
+++ b/src/blitter/32bpp_base.hpp	Fri Aug 15 22:06:58 2008 +0000
@@ -26,6 +26,7 @@
 	/* virtual */ int BufferSize(int width, int height);
 	/* virtual */ void PaletteAnimate(uint start, uint count);
 	/* virtual */ Blitter::PaletteAnimation UsePaletteAnimation();
+	/* virtual */ int GetBytesPerPixel() { return 4; }
 
 	/**
 	 * Compose a colour based on RGB values.