void R_RenderView(void); // must set r_refdef and call R_UpdateVariables first
-void R_InitSky (unsigned char *src, int bytesperpixel); // called at level load
-
void R_SkinFrame_PrepareForPurge(void);
void R_SkinFrame_MarkUsed(skinframe_t *skinframe);
void R_SkinFrame_Purge(void);