+// 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
+// use occlusion buffer for corona
+#define MATERIALFLAG_OCCLUDE 536870912