-#define SURF_PLANEBACK 2
-#define SURF_DRAWSKY 4
-#define SURF_DRAWTURB 0x10
-#define SURF_LIGHTMAP 0x20
-#define SURF_DRAWNOALPHA 0x100
-#define SURF_DRAWFULLBRIGHT 0x200
-#define SURF_LIGHTBOTHSIDES 0x400
-#define SURF_WATERALPHA 0x4000 // this polygon's alpha is modulated by r_wateralpha
-#define SURF_SOLIDCLIP 0x8000 // this polygon blocks movement
-
-#define SURFRENDER_OPAQUE 0
-#define SURFRENDER_ALPHA 1
-#define SURFRENDER_ADD 2
-
-struct entity_render_s;
-struct texture_s;
-struct msurface_s;
-
-typedef struct texture_s
-{
- // name
- char name[16];
- // size
- unsigned int width, height;
- // SURF_ flags
- unsigned int flags;
-
- // position in the model's textures array
- int number;
-
- // type of rendering (SURFRENDER_ value)
- int rendertype;
-
- // loaded the same as model skins
- skinframe_t skin;
-
- // total frames in sequence and alternate sequence
- int anim_total[2];
- // direct pointers to each of the frames in the sequences
- // (indexed as [alternate][frame])
- struct texture_s *anim_frames[2][10];
- // set if animated or there is an alternate frame set
- // (this is an optimization in the renderer)
- int animated;
- // the current texture frame in animation
- struct texture_s *currentframe;
- // current alpha of the texture
- float currentalpha;
-}
-texture_t;
-
-typedef struct
+//#define SURF_PLANEBACK 2
+
+// set for anything to be transparent sorted
+#define MATERIALFLAG_TRANSPARENT 1
+// use alpha blend on this material
+#define MATERIALFLAG_ALPHA 2
+// use additive blend on this material
+#define MATERIALFLAG_ADD 4
+// turn off depth test on this material
+#define MATERIALFLAG_NODEPTHTEST 8
+// multiply alpha by r_wateralpha cvar
+#define MATERIALFLAG_WATERALPHA 16
+// draw with no lighting
+#define MATERIALFLAG_FULLBRIGHT 32
+// drawn as a normal lightmapped wall
+#define MATERIALFLAG_WALL 64
+// swirling water effect
+#define MATERIALFLAG_WATER 128
+// this surface shows the sky
+// skipped if transparent
+#define MATERIALFLAG_SKY 256
+// skips drawing the surface
+#define MATERIALFLAG_NODRAW 512
+// probably used only on q1bsp water
+#define MATERIALFLAG_LIGHTBOTHSIDES 1024
+// use alpha test on this material
+#define MATERIALFLAG_ALPHATEST 2048
+// treat this material as a blended transparency (as opposed to an alpha test
+// transparency), this causes special fog behavior, and disables glDepthMask
+#define MATERIALFLAG_BLENDED 4096
+// render using a custom blendfunc
+#define MATERIALFLAG_CUSTOMBLEND 8192
+// do not cast shadows from this material
+#define MATERIALFLAG_NOSHADOW 16384
+
+typedef struct medge_s