+// render refraction (note: this is just a way to distort the background, otherwise useless)
+#define MATERIALFLAG_REFRACTION 524288
+// render reflection
+#define MATERIALFLAG_REFLECTION 1048576
+// use model lighting on this material (q1bsp lightmap sampling or q3bsp lightgrid, implies FULLBRIGHT is false)
+#define MATERIALFLAG_MODELLIGHT 4194304
+// add directional model lighting to this material (q3bsp lightgrid only)
+#define MATERIALFLAG_MODELLIGHT_DIRECTIONAL 8388608
+// causes RSurf_GetCurrentTexture to leave alone certain fields
+#define MATERIALFLAG_CUSTOMSURFACE 16777216
+// causes MATERIALFLAG_BLENDED to render a depth pass before rendering, hiding backfaces and other hidden geometry
+#define MATERIALFLAG_TRANSDEPTH 33554432
+// like refraction, but doesn't distort etc.
+#define MATERIALFLAG_CAMERA 67108864
+// disable rtlight on surface, use R_LightPoint instead
+#define MATERIALFLAG_NORTLIGHT 134217728
+// alphagen vertex
+#define MATERIALFLAG_ALPHAGEN_VERTEX 268435456