1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3 
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8 
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 
13 See the GNU General Public License for more details.
14 
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18 
19 */
20 
21 #ifndef MODEL_BRUSH_H
22 #define MODEL_BRUSH_H
23 
24 /*
25 ==============================================================================
26 
27 BRUSH MODELS
28 
29 ==============================================================================
30 */
31 
32 
33 
34 //
35 // in memory representation
36 //
37 typedef struct mvertex_s
38 {
39 	vec3_t position;
40 }
41 mvertex_t;
42 
43 #define SIDE_FRONT 0
44 #define SIDE_BACK 1
45 #define SIDE_ON 2
46 
47 
48 // plane_t structure
49 typedef struct mplane_s
50 {
51 	union
52 	{
53 		struct
54 		{
55 			vec3_t normal;
56 			vec_t dist;
57 		};
58 		vec4_t normal_and_dist;
59 	};
60 	// for texture axis selection and fast side tests
61 	int type; // set by PlaneClassify()
62 	int signbits; // set by PlaneClassify()
63 }
64 mplane_t;
65 
66 #define SHADERSTAGE_SKY 0
67 #define SHADERSTAGE_NORMAL 1
68 #define SHADERSTAGE_COUNT 2
69 
70 //#define SURF_PLANEBACK 2
71 
72 // indicates that all triangles of the surface should be added to the BIH collision system
73 #define MATERIALFLAG_MESHCOLLISIONS 1
74 // use alpha blend on this material
75 #define MATERIALFLAG_ALPHA 2
76 // use additive blend on this material
77 #define MATERIALFLAG_ADD 4
78 // turn off depth test on this material
79 #define MATERIALFLAG_NODEPTHTEST 8
80 // multiply alpha by r_wateralpha cvar
81 #define MATERIALFLAG_WATERALPHA 16
82 // draw with no lighting
83 #define MATERIALFLAG_FULLBRIGHT 32
84 // drawn as a normal surface (alternative to SKY)
85 #define MATERIALFLAG_WALL 64
86 // this surface shows the sky in its place, alternative to WALL
87 // skipped if transparent
88 #define MATERIALFLAG_SKY 128
89 // swirling water effect (used with MATERIALFLAG_WALL)
90 #define MATERIALFLAG_WATERSCROLL 256
91 // skips drawing the surface
92 #define MATERIALFLAG_NODRAW 512
93 // probably used only on q1bsp water
94 #define MATERIALFLAG_LIGHTBOTHSIDES 1024
95 // use alpha test on this material
96 #define MATERIALFLAG_ALPHATEST 2048
97 // treat this material as a blended transparency (as opposed to an alpha test
98 // transparency), this causes special fog behavior, and disables glDepthMask
99 #define MATERIALFLAG_BLENDED 4096
100 // render using a custom blendfunc
101 #define MATERIALFLAG_CUSTOMBLEND 8192
102 // do not cast shadows from this material
103 #define MATERIALFLAG_NOSHADOW 16384
104 // render using vertex alpha (q3bsp) as texture blend parameter between foreground (normal) skinframe and background skinframe
105 #define MATERIALFLAG_VERTEXTEXTUREBLEND 32768
106 // disables GL_CULL_FACE on this texture (making it double sided)
107 #define MATERIALFLAG_NOCULLFACE 65536
108 // render with a very short depth range (like 10% of normal), this causes entities to appear infront of most of the scene
109 #define MATERIALFLAG_SHORTDEPTHRANGE 131072
110 // render water, comprising refraction and reflection (note: this is always opaque, the shader does the alpha effect)
111 #define MATERIALFLAG_WATERSHADER 262144
112 // render refraction (note: this is just a way to distort the background, otherwise useless)
113 #define MATERIALFLAG_REFRACTION 524288
114 // render reflection
115 #define MATERIALFLAG_REFLECTION 1048576
116 // use model lighting on this material (q1bsp lightmap sampling or q3bsp lightgrid, implies FULLBRIGHT is false)
117 #define MATERIALFLAG_MODELLIGHT 4194304
118 // add directional model lighting to this material (q3bsp lightgrid only)
119 #define MATERIALFLAG_MODELLIGHT_DIRECTIONAL 8388608
120 // causes RSurf_GetCurrentTexture to leave alone certain fields
121 #define MATERIALFLAG_CUSTOMSURFACE 16777216
122 // causes MATERIALFLAG_BLENDED to render a depth pass before rendering, hiding backfaces and other hidden geometry
123 #define MATERIALFLAG_TRANSDEPTH 33554432
124 // like refraction, but doesn't distort etc.
125 #define MATERIALFLAG_CAMERA 67108864
126 // disable rtlight on surface, use R_LightPoint instead
127 #define MATERIALFLAG_NORTLIGHT 134217728
128 // alphagen vertex
129 #define MATERIALFLAG_ALPHAGEN_VERTEX 268435456
130 // use occlusion buffer for corona
131 #define MATERIALFLAG_OCCLUDE 536870912
132 // combined mask of all attributes that require depth sorted rendering
133 #define MATERIALFLAGMASK_DEPTHSORTED (MATERIALFLAG_BLENDED | MATERIALFLAG_NODEPTHTEST)
134 // combined mask of all attributes that cause some sort of transparency
135 #define MATERIALFLAGMASK_TRANSLUCENT (MATERIALFLAG_WATERALPHA | MATERIALFLAG_SKY | MATERIALFLAG_NODRAW | MATERIALFLAG_ALPHATEST | MATERIALFLAG_BLENDED | MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION)
136 
137 typedef struct medge_s
138 {
139 	unsigned int v[2];
140 }
141 medge_t;
142 
143 struct entity_render_s;
144 struct texture_s;
145 struct msurface_s;
146 
147 typedef struct mnode_s
148 {
149 	//this part shared between node and leaf
150 	mplane_t *plane; // != NULL
151 	struct mnode_s *parent;
152 	struct mportal_s *portals;
153 	// for bounding box culling
154 	vec3_t mins;
155 	vec3_t maxs;
156 	// supercontents from all brushes inside this node or leaf
157 	int combinedsupercontents;
158 
159 	// this part unique to node
160 	struct mnode_s *children[2];
161 
162 	// q1bsp specific
163 	unsigned int firstsurface;
164 	unsigned int numsurfaces;
165 }
166 mnode_t;
167 
168 typedef struct mleaf_s
169 {
170 	//this part shared between node and leaf
171 	mplane_t *plane; // == NULL
172 	struct mnode_s *parent;
173 	struct mportal_s *portals;
174 	// for bounding box culling
175 	vec3_t mins;
176 	vec3_t maxs;
177 	// supercontents from all brushes inside this node or leaf
178 	int combinedsupercontents;
179 
180 	// this part unique to leaf
181 	// common
182 	int clusterindex; // -1 is not in pvs, >= 0 is pvs bit number
183 	int areaindex; // q3bsp
184 	int containscollisionsurfaces; // indicates whether the leafsurfaces contains q3 patches
185 	int numleafsurfaces;
186 	int *firstleafsurface;
187 	int numleafbrushes; // q3bsp
188 	int *firstleafbrush; // q3bsp
189 	unsigned char ambient_sound_level[NUM_AMBIENTS]; // q1bsp
190 	int contents; // q1bsp: // TODO: remove (only used temporarily during loading when making collision hull 0)
191 	int portalmarkid; // q1bsp // used by see-polygon-through-portals visibility checker
192 }
193 mleaf_t;
194 
195 typedef struct mclipnode_s
196 {
197 	int			planenum;
198 	int			children[2];	// negative numbers are contents
199 } mclipnode_t;
200 
201 typedef struct hull_s
202 {
203 	mclipnode_t *clipnodes;
204 	mplane_t *planes;
205 	int firstclipnode;
206 	int lastclipnode;
207 	vec3_t clip_mins;
208 	vec3_t clip_maxs;
209 	vec3_t clip_size;
210 }
211 hull_t;
212 
213 typedef struct mportal_s
214 {
215 	struct mportal_s *next; // the next portal on this leaf
216 	mleaf_t *here; // the leaf this portal is on
217 	mleaf_t *past; // the leaf through this portal (infront)
218 	int numpoints;
219 	mvertex_t *points;
220 	vec3_t mins, maxs; // culling
221 	mplane_t plane;
222 }
223 mportal_t;
224 
225 typedef struct svbspmesh_s
226 {
227 	struct svbspmesh_s *next;
228 	int numverts, maxverts;
229 	int numtriangles, maxtriangles;
230 	float *verts;
231 	int *elements;
232 }
233 svbspmesh_t;
234 
235 // Q2 bsp stuff
236 
237 #define Q2BSPMAGIC ('I' + 'B' * 256 + 'S' * 65536 + 'P' * 16777216)
238 #define Q2BSPVERSION	38
239 
240 // leaffaces, leafbrushes, planes, and verts are still bounded by
241 // 16 bit short limits
242 
243 //=============================================================================
244 
245 #define	Q2LUMP_ENTITIES		0
246 #define	Q2LUMP_PLANES			1
247 #define	Q2LUMP_VERTEXES		2
248 #define	Q2LUMP_VISIBILITY		3
249 #define	Q2LUMP_NODES			4
250 #define	Q2LUMP_TEXINFO		5
251 #define	Q2LUMP_FACES			6
252 #define	Q2LUMP_LIGHTING		7
253 #define	Q2LUMP_LEAFS			8
254 #define	Q2LUMP_LEAFFACES		9
255 #define	Q2LUMP_LEAFBRUSHES	10
256 #define	Q2LUMP_EDGES			11
257 #define	Q2LUMP_SURFEDGES		12
258 #define	Q2LUMP_MODELS			13
259 #define	Q2LUMP_BRUSHES		14
260 #define	Q2LUMP_BRUSHSIDES		15
261 #define	Q2LUMP_POP			16
262 #define	Q2LUMP_AREAS			17
263 #define	Q2LUMP_AREAPORTALS	18
264 #define	Q2HEADER_LUMPS		19
265 
266 typedef struct q2dheader_s
267 {
268 	int			ident;
269 	int			version;
270 	lump_t		lumps[Q2HEADER_LUMPS];
271 } q2dheader_t;
272 
273 typedef struct q2dmodel_s
274 {
275 	float		mins[3], maxs[3];
276 	float		origin[3];		// for sounds or lights
277 	int			headnode;
278 	int			firstface, numfaces;	// submodels just draw faces
279 										// without walking the bsp tree
280 } q2dmodel_t;
281 
282 // planes (x&~1) and (x&~1)+1 are always opposites
283 
284 // contents flags are seperate bits
285 // a given brush can contribute multiple content bits
286 // multiple brushes can be in a single leaf
287 
288 // these definitions also need to be in q_shared.h!
289 
290 // lower bits are stronger, and will eat weaker brushes completely
291 #define	Q2CONTENTS_SOLID			1		// an eye is never valid in a solid
292 #define	Q2CONTENTS_WINDOW			2		// translucent, but not watery
293 #define	Q2CONTENTS_AUX			4
294 #define	Q2CONTENTS_LAVA			8
295 #define	Q2CONTENTS_SLIME			16
296 #define	Q2CONTENTS_WATER			32
297 #define	Q2CONTENTS_MIST			64
298 #define	Q2LAST_VISIBLE_CONTENTS	64
299 
300 // remaining contents are non-visible, and don't eat brushes
301 
302 #define	Q2CONTENTS_AREAPORTAL		0x8000
303 
304 #define	Q2CONTENTS_PLAYERCLIP		0x10000
305 #define	Q2CONTENTS_MONSTERCLIP	0x20000
306 
307 // currents can be added to any other contents, and may be mixed
308 #define	Q2CONTENTS_CURRENT_0		0x40000
309 #define	Q2CONTENTS_CURRENT_90		0x80000
310 #define	Q2CONTENTS_CURRENT_180	0x100000
311 #define	Q2CONTENTS_CURRENT_270	0x200000
312 #define	Q2CONTENTS_CURRENT_UP		0x400000
313 #define	Q2CONTENTS_CURRENT_DOWN	0x800000
314 
315 #define	Q2CONTENTS_ORIGIN			0x1000000	// removed before bsping an entity
316 
317 #define	Q2CONTENTS_MONSTER		0x2000000	// should never be on a brush, only in game
318 #define	Q2CONTENTS_DEADMONSTER	0x4000000
319 #define	Q2CONTENTS_DETAIL			0x8000000	// brushes to be added after vis leafs
320 #define	Q2CONTENTS_TRANSLUCENT	0x10000000	// auto set if any surface has trans
321 #define	Q2CONTENTS_LADDER			0x20000000
322 
323 
324 
325 #define	Q2SURF_LIGHT		0x1		// value will hold the light strength
326 
327 #define	Q2SURF_SLICK		0x2		// effects game physics
328 
329 #define	Q2SURF_SKY		0x4		// don't draw, but add to skybox
330 #define	Q2SURF_WARP		0x8		// turbulent water warp
331 #define	Q2SURF_TRANS33	0x10
332 #define	Q2SURF_TRANS66	0x20
333 #define	Q2SURF_FLOWING	0x40	// scroll towards angle
334 #define	Q2SURF_NODRAW		0x80	// don't bother referencing the texture
335 
336 #define Q2SURF_HINT		0x100   // make a primary bsp splitter
337 #define Q2SURF_SKIP		0x200   // completely ignore, allowing non-closed brushes
338 
339 #define Q2SURF_ALPHATEST 0x02000000	// alpha test masking of color 255 in wal textures (supported by modded engines)
340 
341 
342 /*
343 typedef struct q2dnode_s
344 {
345 	int			planenum;
346 	int			children[2];	// negative numbers are -(leafs+1), not nodes
347 	short		mins[3];		// for frustom culling
348 	short		maxs[3];
349 	unsigned short	firstface;
350 	unsigned short	numfaces;	// counting both sides
351 } q2dnode_t;
352 
353 typedef struct q2texinfo_s
354 {
355 	float		vecs[2][4];		// [s/t][xyz offset]
356 	int			flags;			// miptex flags + overrides
357 	int			value;			// light emission, etc
358 	char		texture[32];	// texture name (textures/something.wal)
359 	int			nexttexinfo;	// for animations, -1 = end of chain
360 } q2texinfo_t;
361 
362 typedef struct q2dleaf_s
363 {
364 	int				contents;			// OR of all brushes (not needed?)
365 
366 	short			cluster;
367 	short			area;
368 
369 	short			mins[3];			// for frustum culling
370 	short			maxs[3];
371 
372 	unsigned short	firstleafface;
373 	unsigned short	numleaffaces;
374 
375 	unsigned short	firstleafbrush;
376 	unsigned short	numleafbrushes;
377 } q2dleaf_t;
378 
379 typedef struct q2dbrushside_s
380 {
381 	unsigned short	planenum;		// facing out of the leaf
382 	short	texinfo;
383 } q2dbrushside_t;
384 
385 typedef struct q2dbrush_s
386 {
387 	int			firstside;
388 	int			numsides;
389 	int			contents;
390 } q2dbrush_t;
391 
392 
393 // the visibility lump consists of a header with a count, then
394 // byte offsets for the PVS and PHS of each cluster, then the raw
395 // compressed bit vectors
396 #define	Q2DVIS_PVS	0
397 #define	Q2DVIS_PHS	1
398 typedef struct q2dvis_s
399 {
400 	int			numclusters;
401 	int			bitofs[8][2];	// bitofs[numclusters][2]
402 } q2dvis_t;
403 
404 // each area has a list of portals that lead into other areas
405 // when portals are closed, other areas may not be visible or
406 // hearable even if the vis info says that it should be
407 typedef struct q2dareaportal_s
408 {
409 	int		portalnum;
410 	int		otherarea;
411 } q2dareaportal_t;
412 
413 typedef struct q2darea_s
414 {
415 	int		numareaportals;
416 	int		firstareaportal;
417 } q2darea_t;
418 */
419 
420 
421 //Q3 bsp stuff
422 
423 #define Q3BSPVERSION	46
424 #define Q3BSPVERSION_LIVE 47
425 #define Q3BSPVERSION_IG	48
426 
427 #define	Q3LUMP_ENTITIES		0 // entities to spawn (used by server and client)
428 #define	Q3LUMP_TEXTURES		1 // textures used (used by faces)
429 #define	Q3LUMP_PLANES		2 // planes used (used by bsp nodes)
430 #define	Q3LUMP_NODES		3 // bsp nodes (used by bsp nodes, bsp leafs, rendering, collisions)
431 #define	Q3LUMP_LEAFS		4 // bsp leafs (used by bsp nodes)
432 #define	Q3LUMP_LEAFFACES	5 // array of ints indexing faces (used by leafs)
433 #define	Q3LUMP_LEAFBRUSHES	6 // array of ints indexing brushes (used by leafs)
434 #define	Q3LUMP_MODELS		7 // models (used by rendering, collisions)
435 #define	Q3LUMP_BRUSHES		8 // brushes (used by effects, collisions)
436 #define	Q3LUMP_BRUSHSIDES	9 // brush faces (used by brushes)
437 #define	Q3LUMP_VERTICES		10 // mesh vertices (used by faces)
438 #define	Q3LUMP_TRIANGLES	11 // mesh triangles (used by faces)
439 #define	Q3LUMP_EFFECTS		12 // fog (used by faces)
440 #define	Q3LUMP_FACES		13 // surfaces (used by leafs)
441 #define	Q3LUMP_LIGHTMAPS	14 // lightmap textures (used by faces)
442 #define	Q3LUMP_LIGHTGRID	15 // lighting as a voxel grid (used by rendering)
443 #define	Q3LUMP_PVS			16 // potentially visible set; bit[clusters][clusters] (used by rendering)
444 #define	Q3HEADER_LUMPS		17
445 #define	Q3LUMP_ADVERTISEMENTS 17 // quake live stuff written by zeroradiant's q3map2 (ignored by DP)
446 #define	Q3HEADER_LUMPS_LIVE	18
447 #define	Q3HEADER_LUMPS_MAX	18
448 
449 typedef struct q3dheader_s
450 {
451 	int			ident;
452 	int			version;
453 	lump_t		lumps[Q3HEADER_LUMPS_MAX];
454 } q3dheader_t;
455 
456 typedef struct q3dtexture_s
457 {
458 	char name[Q3PATHLENGTH];
459 	int surfaceflags;
460 	int contents;
461 }
462 q3dtexture_t;
463 
464 // note: planes are paired, the pair of planes with i and i ^ 1 are opposites.
465 typedef struct q3dplane_s
466 {
467 	float normal[3];
468 	float dist;
469 }
470 q3dplane_t;
471 
472 typedef struct q3dnode_s
473 {
474 	int planeindex;
475 	int childrenindex[2];
476 	int mins[3];
477 	int maxs[3];
478 }
479 q3dnode_t;
480 
481 typedef struct q3dleaf_s
482 {
483 	int clusterindex; // pvs index
484 	int areaindex; // area index
485 	int mins[3];
486 	int maxs[3];
487 	int firstleafface;
488 	int numleaffaces;
489 	int firstleafbrush;
490 	int numleafbrushes;
491 }
492 q3dleaf_t;
493 
494 typedef struct q3dmodel_s
495 {
496 	float mins[3];
497 	float maxs[3];
498 	int firstface;
499 	int numfaces;
500 	int firstbrush;
501 	int numbrushes;
502 }
503 q3dmodel_t;
504 
505 typedef struct q3dbrush_s
506 {
507 	int firstbrushside;
508 	int numbrushsides;
509 	int textureindex;
510 }
511 q3dbrush_t;
512 
513 typedef struct q3dbrushside_s
514 {
515 	int planeindex;
516 	int textureindex;
517 }
518 q3dbrushside_t;
519 
520 typedef struct q3dbrushside_ig_s
521 {
522 	int planeindex;
523 	int textureindex;
524 	int surfaceflags;
525 }
526 q3dbrushside_ig_t;
527 
528 typedef struct q3dvertex_s
529 {
530 	float origin3f[3];
531 	float texcoord2f[2];
532 	float lightmap2f[2];
533 	float normal3f[3];
534 	unsigned char color4ub[4];
535 }
536 q3dvertex_t;
537 
538 typedef struct q3dmeshvertex_s
539 {
540 	int offset; // first vertex index of mesh
541 }
542 q3dmeshvertex_t;
543 
544 typedef struct q3deffect_s
545 {
546 	char shadername[Q3PATHLENGTH];
547 	int brushindex;
548 	int unknown; // I read this is always 5 except in q3dm8 which has one effect with -1
549 }
550 q3deffect_t;
551 
552 #define Q3FACETYPE_FLAT 1 // common
553 #define Q3FACETYPE_PATCH 2 // common
554 #define Q3FACETYPE_MESH 3 // common
555 #define Q3FACETYPE_FLARE 4 // rare (is this ever used?)
556 
557 typedef struct q3dface_s
558 {
559 	int textureindex;
560 	int effectindex; // -1 if none
561 	int type; // Q3FACETYPE
562 	int firstvertex;
563 	int numvertices;
564 	int firstelement;
565 	int numelements;
566 	int lightmapindex; // -1 if none
567 	int lightmap_base[2];
568 	int lightmap_size[2];
569 	union
570 	{
571 		struct
572 		{
573 			// corrupt or don't care
574 			int blah[14];
575 		}
576 		unknown;
577 		struct
578 		{
579 			// Q3FACETYPE_FLAT
580 			// mesh is a collection of triangles on a plane, renderable as a mesh (NOT a polygon)
581 			float lightmap_origin[3];
582 			float lightmap_vectors[2][3];
583 			float normal[3];
584 			int unused1[2];
585 		}
586 		flat;
587 		struct
588 		{
589 			// Q3FACETYPE_PATCH
590 			// patch renders as a bezier mesh, with adjustable tesselation
591 			// level (optionally based on LOD using the bbox and polygon
592 			// count to choose a tesselation level)
593 			// note: multiple patches may have the same bbox to cause them to
594 			// be LOD adjusted together as a group
595 			int unused1[3];
596 			float mins[3]; // LOD bbox
597 			float maxs[3]; // LOD bbox
598 			int unused2[3];
599 			int patchsize[2]; // dimensions of vertex grid
600 		}
601 		patch;
602 		struct
603 		{
604 			// Q3FACETYPE_MESH
605 			// mesh renders as simply a triangle mesh
606 			int unused1[3];
607 			float mins[3];
608 			float maxs[3];
609 			int unused2[5];
610 		}
611 		mesh;
612 		struct
613 		{
614 			// Q3FACETYPE_FLARE
615 			// flare renders as a simple sprite at origin, no geometry
616 			// exists, nor does it have a radius, a cvar controls the radius
617 			// and another cvar controls distance fade
618 			// (they were not used in Q3 I'm told)
619 			float origin[3];
620 			int unused1[11];
621 		}
622 		flare;
623 	}
624 	specific;
625 }
626 q3dface_t;
627 
628 typedef struct q3dlightmap_s
629 {
630 	unsigned char rgb[128*128*3];
631 }
632 q3dlightmap_t;
633 
634 typedef struct q3dlightgrid_s
635 {
636 	unsigned char ambientrgb[3];
637 	unsigned char diffusergb[3];
638 	unsigned char diffusepitch;
639 	unsigned char diffuseyaw;
640 }
641 q3dlightgrid_t;
642 
643 typedef struct q3dpvs_s
644 {
645 	int numclusters;
646 	int chainlength;
647 	// unsigned char chains[];
648 	// containing bits in 0-7 order (not 7-0 order),
649 	// pvschains[mycluster * chainlength + (thatcluster >> 3)] & (1 << (thatcluster & 7))
650 }
651 q3dpvs_t;
652 
653 // surfaceflags from bsp
654 #define Q3SURFACEFLAG_NODAMAGE 1
655 #define Q3SURFACEFLAG_SLICK 2
656 #define Q3SURFACEFLAG_SKY 4
657 #define Q3SURFACEFLAG_LADDER 8 // has no surfaceparm
658 #define Q3SURFACEFLAG_NOIMPACT 16
659 #define Q3SURFACEFLAG_NOMARKS 32
660 #define Q3SURFACEFLAG_FLESH 64 // has no surfaceparm
661 #define Q3SURFACEFLAG_NODRAW 128
662 #define Q3SURFACEFLAG_HINT 256
663 #define Q3SURFACEFLAG_SKIP 512 // has no surfaceparm
664 #define Q3SURFACEFLAG_NOLIGHTMAP 1024
665 #define Q3SURFACEFLAG_POINTLIGHT 2048
666 #define Q3SURFACEFLAG_METALSTEPS 4096
667 #define Q3SURFACEFLAG_NOSTEPS 8192 // has no surfaceparm
668 #define Q3SURFACEFLAG_NONSOLID 16384
669 #define Q3SURFACEFLAG_LIGHTFILTER 32768
670 #define Q3SURFACEFLAG_ALPHASHADOW 65536
671 #define Q3SURFACEFLAG_NODLIGHT 131072
672 #define Q3SURFACEFLAG_DUST 262144
673 
674 // surfaceparms from shaders
675 #define Q3SURFACEPARM_ALPHASHADOW 1
676 #define Q3SURFACEPARM_AREAPORTAL 2
677 #define Q3SURFACEPARM_CLUSTERPORTAL 4
678 #define Q3SURFACEPARM_DETAIL 8
679 #define Q3SURFACEPARM_DONOTENTER 16
680 #define Q3SURFACEPARM_FOG 32
681 #define Q3SURFACEPARM_LAVA 64
682 #define Q3SURFACEPARM_LIGHTFILTER 128
683 #define Q3SURFACEPARM_METALSTEPS 256
684 #define Q3SURFACEPARM_NODAMAGE 512
685 #define Q3SURFACEPARM_NODLIGHT 1024
686 #define Q3SURFACEPARM_NODRAW 2048
687 #define Q3SURFACEPARM_NODROP 4096
688 #define Q3SURFACEPARM_NOIMPACT 8192
689 #define Q3SURFACEPARM_NOLIGHTMAP 16384
690 #define Q3SURFACEPARM_NOMARKS 32768
691 #define Q3SURFACEPARM_NOMIPMAPS 65536
692 #define Q3SURFACEPARM_NONSOLID 131072
693 #define Q3SURFACEPARM_ORIGIN 262144
694 #define Q3SURFACEPARM_PLAYERCLIP 524288
695 #define Q3SURFACEPARM_SKY 1048576
696 #define Q3SURFACEPARM_SLICK 2097152
697 #define Q3SURFACEPARM_SLIME 4194304
698 #define Q3SURFACEPARM_STRUCTURAL 8388608
699 #define Q3SURFACEPARM_TRANS 16777216
700 #define Q3SURFACEPARM_WATER 33554432
701 #define Q3SURFACEPARM_POINTLIGHT 67108864
702 #define Q3SURFACEPARM_HINT 134217728
703 #define Q3SURFACEPARM_DUST 268435456
704 #define Q3SURFACEPARM_BOTCLIP 536870912
705 #define Q3SURFACEPARM_LIGHTGRID 1073741824
706 #define Q3SURFACEPARM_ANTIPORTAL 2147483648u
707 
708 typedef struct q3mbrush_s
709 {
710 	struct colbrushf_s *colbrushf;
711 	int numbrushsides;
712 	struct q3mbrushside_s *firstbrushside;
713 	struct texture_s *texture;
714 }
715 q3mbrush_t;
716 
717 typedef struct q3mbrushside_s
718 {
719 	struct mplane_s *plane;
720 	struct texture_s *texture;
721 }
722 q3mbrushside_t;
723 
724 // the first cast is to shut up a stupid warning by clang, the second cast is to make both sides have the same type
725 #define CHECKPVSBIT(pvs,b) ((b) >= 0 ? (unsigned char) ((pvs)[(b) >> 3] & (1 << ((b) & 7))) : (unsigned char) false)
726 #define SETPVSBIT(pvs,b) (void) ((b) >= 0 ? (unsigned char) ((pvs)[(b) >> 3] |= (1 << ((b) & 7))) : (unsigned char) false)
727 #define CLEARPVSBIT(pvs,b) (void) ((b) >= 0 ? (unsigned char) ((pvs)[(b) >> 3] &= ~(1 << ((b) & 7))) : (unsigned char) false)
728 
729 #endif
730 
731