The original Quake 2 sources as originally released under the GPL license on December 21, 2001.

null/swimp_null.c

@@ -0,0 +1,30 @@
+#include "../ref_soft/r_local.h"
+
+void		SWimp_BeginFrame( float camera_separation )
+{
+}
+
+void		SWimp_EndFrame (void)
+{
+}
+
+int			SWimp_Init( void *hInstance, void *wndProc )
+{
+}
+
+void		SWimp_SetPalette( const unsigned char *palette)
+{
+}
+
+void		SWimp_Shutdown( void )
+{
+}
+
+rserr_t		SWimp_SetMode( int *pwidth, int *pheight, int mode, qboolean fullscreen )
+{
+}
+
+void		SWimp_AppActivate( qboolean active )
+{
+}
+