void R_DrawSurfaces(entity_render_t *ent, qboolean skysurfaces);
void RSurf_PrepareVerticesForBatch(qboolean generatenormals, qboolean generatetangents, int texturenumsurfaces, msurface_t **texturesurfacelist);
+void RSurf_DrawBatch_Simple(int texturenumsurfaces, msurface_t **texturesurfacelist);
#define SHADERPERMUTATION_MODE_LIGHTSOURCE (1<<0) // (lightsource) use directional pixel shading from light source (rtlight)
#define SHADERPERMUTATION_MODE_LIGHTDIRECTIONMAP_MODELSPACE (1<<1) // (lightmap) use directional pixel shading from texture containing modelspace light directions (deluxemap)