Adding support for floating point input/output. Work in progress.

src/nvimage/DirectDrawSurface.h

@@ -93,6 +93,7 @@ namespace nv
 		void setLinearSize(uint size);
 		void setPitch(uint pitch);
 		void setFourCC(uint8 c0, uint8 c1, uint8 c2, uint8 c3);
+		void setFormatCode(uint code);
 		void setPixelFormat(uint bitcount, uint rmask, uint gmask, uint bmask, uint amask);
 		void setDX10Format(uint format);
 		void setNormalFlag(bool b);