void Draw_Init (void);
cachepic_t *Draw_CachePic (const char *path, qboolean persistent);
// create or update a pic's image
-cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, qbyte *pixels);
+cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, unsigned char *pixels);
// free the texture memory used by a pic
void Draw_FreePic(const char *picname);