2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
27 extern float ixtable[4096];
30 extern void FOG_clear(void);
34 extern cvar_t r_skyscroll1;
35 extern cvar_t r_skyscroll2;
36 extern int skyrenderlater, skyrendermasked;
37 extern int R_SetSkyBox(const char *sky);
38 extern void R_SkyStartFrame(void);
39 extern void R_Sky(void);
40 extern void R_ResetSkyBox(void);
42 // SHOWLMP stuff (Nehahra)
43 extern void SHOWLMP_decodehide(void);
44 extern void SHOWLMP_decodeshow(void);
45 extern void SHOWLMP_drawall(void);
47 // render profiling stuff
48 extern int r_timereport_active;
51 extern cvar_t r_ambient;
52 extern cvar_t gl_flashblend;
55 extern cvar_t r_novis;
57 extern cvar_t r_lerpsprites;
58 extern cvar_t r_lerpmodels;
59 extern cvar_t r_lerplightstyles;
60 extern cvar_t r_waterscroll;
62 extern cvar_t developer_texturelogging;
64 // shadow volume bsp struct with automatically growing nodes buffer
65 extern svbsp_t r_svbsp;
67 typedef struct rmesh_s
69 // vertices of this mesh
77 float *texcoordlightmap2f;
79 // triangles of this mesh
89 // useful functions for rendering
90 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b);
91 void R_FillColors(float *out, int verts, float r, float g, float b, float a);
92 int R_Mesh_AddVertex3f(rmesh_t *mesh, const float *v);
93 void R_Mesh_AddPolygon3f(rmesh_t *mesh, int numvertices, float *vertex3f);
94 void R_Mesh_AddBrushMeshFromPlanes(rmesh_t *mesh, int numplanes, mplane_t *planes);
96 #define TOP_RANGE 16 // soldier uniform colors
97 #define BOTTOM_RANGE 96
99 //=============================================================================
101 extern cvar_t r_nearclip;
103 // forces all rendering to draw triangle outlines
104 extern cvar_t r_showtris;
105 extern cvar_t r_shownormals;
106 extern cvar_t r_showlighting;
107 extern cvar_t r_showshadowvolumes;
108 extern cvar_t r_showcollisionbrushes;
109 extern cvar_t r_showcollisionbrushes_polygonfactor;
110 extern cvar_t r_showcollisionbrushes_polygonoffset;
111 extern cvar_t r_showdisabledepthtest;
116 extern cvar_t r_drawentities;
117 extern cvar_t r_drawviewmodel;
118 extern cvar_t r_speeds;
119 extern cvar_t r_fullbright;
120 extern cvar_t r_wateralpha;
121 extern cvar_t r_dynamic;
124 void R_UpdateVariables(void); // must call after setting up most of r_refdef, but before calling R_RenderView
125 void R_RenderView(void); // must set r_refdef and call R_UpdateVariables first
127 typedef enum r_refdef_scene_type_s {
131 } r_refdef_scene_type_t;
133 void R_SelectScene( r_refdef_scene_type_t scenetype );
134 r_refdef_scene_t * R_GetScenePointer( r_refdef_scene_type_t scenetype );
136 void R_SkinFrame_PrepareForPurge(void);
137 void R_SkinFrame_MarkUsed(skinframe_t *skinframe);
138 void R_SkinFrame_Purge(void);
139 // set last to NULL to start from the beginning
140 skinframe_t *R_SkinFrame_FindNextByName( skinframe_t *last, const char *name );
141 skinframe_t *R_SkinFrame_Find(const char *name, int textureflags, int comparewidth, int compareheight, int comparecrc, qboolean add);
142 skinframe_t *R_SkinFrame_LoadExternal(const char *name, int textureflags, qboolean complain);
143 skinframe_t *R_SkinFrame_LoadExternal_CheckAlpha(const char *name, int textureflags, qboolean complain, qboolean *has_alpha);
144 skinframe_t *R_SkinFrame_LoadInternalBGRA(const char *name, int textureflags, const unsigned char *skindata, int width, int height);
145 skinframe_t *R_SkinFrame_LoadInternalQuake(const char *name, int textureflags, int loadpantsandshirt, int loadglowtexture, const unsigned char *skindata, int width, int height);
146 skinframe_t *R_SkinFrame_LoadInternal8bit(const char *name, int textureflags, const unsigned char *skindata, int width, int height, const unsigned int *palette, const unsigned int *alphapalette);
147 skinframe_t *R_SkinFrame_LoadMissing(void);
149 void R_View_WorldVisibility(qboolean forcenovis);
150 void R_DrawDecals(void);
151 void R_DrawParticles(void);
152 void R_DrawExplosions(void);
154 #define gl_solid_format 3
155 #define gl_alpha_format 4
157 int R_CullBox(const vec3_t mins, const vec3_t maxs);
158 int R_CullBoxCustomPlanes(const vec3_t mins, const vec3_t maxs, int numplanes, const mplane_t *planes);
160 #include "r_modules.h"
162 #include "meshqueue.h"
164 #include "r_lerpanim.h"
166 extern cvar_t r_render;
167 extern cvar_t r_renderview;
168 extern cvar_t r_waterwarp;
170 extern cvar_t r_textureunits;
171 extern cvar_t r_glsl;
172 extern cvar_t r_glsl_offsetmapping;
173 extern cvar_t r_glsl_offsetmapping_reliefmapping;
174 extern cvar_t r_glsl_offsetmapping_scale;
175 extern cvar_t r_glsl_deluxemapping;
177 extern cvar_t gl_polyblend;
178 extern cvar_t gl_dither;
180 extern cvar_t cl_deathfade;
182 extern cvar_t r_smoothnormals_areaweighting;
184 extern cvar_t r_test;
186 #include "gl_backend.h"
188 extern rtexture_t *r_texture_blanknormalmap;
189 extern rtexture_t *r_texture_white;
190 extern rtexture_t *r_texture_grey128;
191 extern rtexture_t *r_texture_black;
192 extern rtexture_t *r_texture_notexture;
193 extern rtexture_t *r_texture_whitecube;
194 extern rtexture_t *r_texture_normalizationcube;
195 extern rtexture_t *r_texture_fogattenuation;
196 //extern rtexture_t *r_texture_fogintensity;
198 #define R_MAX_OCCLUSION_QUERIES 4096
199 extern unsigned int r_queries[R_MAX_OCCLUSION_QUERIES];
200 extern unsigned int r_numqueries;
201 extern unsigned int r_maxqueries;
203 void R_TimeReport(char *name);
206 void R_Stain(const vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2);
208 void R_CalcBeam_Vertex3f(float *vert, const vec3_t org1, const vec3_t org2, float width);
209 void R_CalcSprite_Vertex3f(float *vertex3f, const vec3_t origin, const vec3_t left, const vec3_t up, float scalex1, float scalex2, float scaley1, float scaley2);
211 extern mempool_t *r_main_mempool;
213 typedef struct rsurfacestate_s
215 // processing buffers
217 float *array_modelvertex3f;
218 float *array_modelsvector3f;
219 float *array_modeltvector3f;
220 float *array_modelnormal3f;
221 float *array_deformedvertex3f;
222 float *array_deformedsvector3f;
223 float *array_deformedtvector3f;
224 float *array_deformednormal3f;
225 float *array_generatedtexcoordtexture2f;
226 float *array_color4f;
227 float *array_texcoord3f;
229 // current model array pointers
230 // these may point to processing buffers if model is animated,
231 // otherwise they point to static data.
232 // these are not directly used for rendering, they are just another level
235 // these either point at array_model* buffers (if the model is animated)
236 // or the model->surfmesh.data_* buffers (if the model is not animated)
238 // these are only set when an entity render begins, they do not change on
239 // a per surface basis.
241 // this indicates the model* arrays are pointed at array_model* buffers
242 // (in other words, the model has been animated in software)
243 qboolean generatedvertex;
244 const float *modelvertex3f;
245 int modelvertex3f_bufferobject;
246 size_t modelvertex3f_bufferoffset;
247 const float *modelsvector3f;
248 int modelsvector3f_bufferobject;
249 size_t modelsvector3f_bufferoffset;
250 const float *modeltvector3f;
251 int modeltvector3f_bufferobject;
252 size_t modeltvector3f_bufferoffset;
253 const float *modelnormal3f;
254 int modelnormal3f_bufferobject;
255 size_t modelnormal3f_bufferoffset;
256 const float *modellightmapcolor4f;
257 int modellightmapcolor4f_bufferobject;
258 size_t modellightmapcolor4f_bufferoffset;
259 const float *modeltexcoordtexture2f;
260 int modeltexcoordtexture2f_bufferobject;
261 size_t modeltexcoordtexture2f_bufferoffset;
262 const float *modeltexcoordlightmap2f;
263 int modeltexcoordlightmap2f_bufferobject;
264 size_t modeltexcoordlightmap2f_bufferoffset;
265 const int *modelelement3i;
266 const unsigned short *modelelement3s;
267 int modelelement3i_bufferobject;
268 int modelelement3s_bufferobject;
269 const int *modellightmapoffsets;
270 int modelnum_vertices;
271 int modelnum_triangles;
272 const msurface_t *modelsurfaces;
273 // current rendering array pointers
274 // these may point to any of several different buffers depending on how
275 // much processing was needed to prepare this model for rendering
276 // these usually equal the model* pointers, they only differ if
277 // deformvertexes is used in a q3 shader, and consequently these can
278 // change on a per-surface basis (according to rsurface.texture)
280 // the exception is the color array which is often generated based on
281 // colormod, alpha fading, and fogging, it may also come from q3bsp vertex
282 // lighting of certain surfaces
283 const float *vertex3f;
284 int vertex3f_bufferobject;
285 size_t vertex3f_bufferoffset;
286 const float *svector3f;
287 int svector3f_bufferobject;
288 size_t svector3f_bufferoffset;
289 const float *tvector3f;
290 int tvector3f_bufferobject;
291 size_t tvector3f_bufferoffset;
292 const float *normal3f;
293 int normal3f_bufferobject;
294 size_t normal3f_bufferoffset;
295 const float *lightmapcolor4f;
296 int lightmapcolor4f_bufferobject;
297 size_t lightmapcolor4f_bufferoffset;
298 const float *texcoordtexture2f;
299 int texcoordtexture2f_bufferobject;
300 size_t texcoordtexture2f_bufferoffset;
301 const float *texcoordlightmap2f;
302 int texcoordlightmap2f_bufferobject;
303 size_t texcoordlightmap2f_bufferoffset;
304 // some important fields from the entity
308 float ent_shadertime;
310 // transform matrices to render this entity and effects on this entity
312 matrix4x4_t inversematrix;
313 // scale factors for transforming lengths into/out of entity space
315 float inversematrixscale;
316 // animation blending state from entity
317 frameblend_t frameblend[MAX_FRAMEBLENDS];
318 // directional model shading state from entity
319 vec3_t modellight_ambient;
320 vec3_t modellight_diffuse;
321 vec3_t modellight_lightdir;
322 // colormapping state from entity (these are black if colormapping is off)
323 vec3_t colormap_pantscolor;
324 vec3_t colormap_shirtcolor;
325 // special coloring of glow textures
327 // view location in model space
328 vec3_t localvieworigin;
329 // polygon offset data for submodels
330 float basepolygonfactor;
331 float basepolygonoffset;
332 // current texture in batching code
334 // whether lightmapping is active on this batch
335 // (otherwise vertex colored)
336 qboolean uselightmaptexture;
337 // fog plane in model space for direct application to vertices
339 float fogmasktabledistmultiplier;
342 float fogplaneviewdist;
345 // light currently being rendered
346 const rtlight_t *rtlight;
347 // current light's cull box (copied out of an rtlight or calculated by GetLightInfo)
348 vec3_t rtlight_cullmins;
349 vec3_t rtlight_cullmaxs;
350 // current light's culling planes
351 int rtlight_numfrustumplanes;
352 mplane_t rtlight_frustumplanes[12+6+6]; // see R_Shadow_ComputeShadowCasterCullingPlanes
354 // this is the location of the light in entity space
355 vec3_t entitylightorigin;
356 // this transforms entity coordinates to light filter cubemap coordinates
357 // (also often used for other purposes)
358 matrix4x4_t entitytolight;
359 // based on entitytolight this transforms -1 to +1 to 0 to 1 for purposes
360 // of attenuation texturing in full 3D (Z result often ignored)
361 matrix4x4_t entitytoattenuationxyz;
362 // this transforms only the Z to S, and T is always 0.5
363 matrix4x4_t entitytoattenuationz;
365 // pointer to an entity_render_t used only by R_GetCurrentTexture and
366 // RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity as a unique id within
367 // each frame (see r_frame also)
368 entity_render_t *entity;
372 extern rsurfacestate_t rsurface;
374 void RSurf_ActiveWorldEntity(void);
375 void RSurf_ActiveModelEntity(const entity_render_t *ent, qboolean wantnormals, qboolean wanttangents);
376 void RSurf_ActiveCustomEntity(const matrix4x4_t *matrix, const matrix4x4_t *inversematrix, int entflags, double shadertime, float r, float g, float b, float a, int numvertices, const float *vertex3f, const float *texcoord2f, const float *normal3f, const float *svector3f, const float *tvector3f, const float *color4f, int numtriangles, const int *element3i, const unsigned short *element3s, qboolean wantnormals, qboolean wanttangents);
377 void RSurf_SetupDepthAndCulling(void);
379 void R_Mesh_ResizeArrays(int newvertices);
381 texture_t *R_GetCurrentTexture(texture_t *t);
382 void R_DrawWorldSurfaces(qboolean skysurfaces, qboolean writedepth, qboolean depthonly, qboolean debug);
383 void R_DrawModelSurfaces(entity_render_t *ent, qboolean skysurfaces, qboolean writedepth, qboolean depthonly, qboolean debug);
384 void R_AddWaterPlanes(entity_render_t *ent);
385 void R_DrawCustomSurface(skinframe_t *skinframe, const matrix4x4_t *texmatrix, int materialflags, int firstvertex, int numvertices, int firsttriangle, int numtriangles, qboolean writedepth);
387 void RSurf_PrepareVerticesForBatch(qboolean generatenormals, qboolean generatetangents, int texturenumsurfaces, const msurface_t **texturesurfacelist);
388 void RSurf_DrawBatch_Simple(int texturenumsurfaces, const msurface_t **texturesurfacelist);
390 typedef enum rsurfacepass_e
393 RSURFPASS_BACKGROUND,
398 typedef enum gl20_texunit_e
400 // postprocess shaders, and generic shaders:
403 GL20TU_GAMMARAMPS = 2,
404 // standard material properties
409 // material properties for a second material
410 GL20TU_SECONDARY_NORMAL = 4,
411 GL20TU_SECONDARY_COLOR = 5,
412 GL20TU_SECONDARY_GLOSS = 6,
413 GL20TU_SECONDARY_GLOW = 7,
414 // material properties for a colormapped material
415 // conflicts with secondary material
418 // fog fade in the distance
420 // compiled ambient lightmap and deluxemap
422 GL20TU_DELUXEMAP = 10,
423 // refraction, used by water shaders
424 GL20TU_REFRACTION = 3,
425 // reflection, used by water shaders, also with normal material rendering
426 // conflicts with secondary material
427 GL20TU_REFLECTION = 7,
428 // rtlight attenuation (distance fade) and cubemap filter (projection texturing)
429 // conflicts with lightmap/deluxemap
430 GL20TU_ATTENUATION = 9,
432 GL20TU_SHADOWMAPRECT = 11,
433 GL20TU_SHADOWMAPCUBE = 11,
434 GL20TU_SHADOWMAP2D = 11,
435 GL20TU_CUBEPROJECTION = 12
439 void R_SetupGenericShader(qboolean usetexture);
440 void R_SetupGenericTwoTextureShader(int texturemode);
441 void R_SetupDepthOrShadowShader(void);
442 void R_SetupShowDepthShader(void);
443 void R_SetupSurfaceShader(const vec3_t lightcolorbase, qboolean modellighting, float ambientscale, float diffusescale, float specularscale, rsurfacepass_t rsurfacepass);
445 typedef struct r_waterstate_waterplane_s
447 rtexture_t *texture_refraction;
448 rtexture_t *texture_reflection;
450 int materialflags; // combined flags of all water surfaces on this plane
451 unsigned char pvsbits[(32768+7)>>3]; // FIXME: buffer overflow on huge maps
454 r_waterstate_waterplane_t;
456 #define MAX_WATERPLANES 16
458 typedef struct r_waterstate_s
462 qboolean renderingscene; // true while rendering a refraction or reflection texture, disables water surfaces
464 int waterwidth, waterheight;
465 int texturewidth, textureheight;
467 int maxwaterplanes; // same as MAX_WATERPLANES
469 r_waterstate_waterplane_t waterplanes[MAX_WATERPLANES];
471 float screenscale[2];
472 float screencenter[2];
476 extern r_waterstate_t r_waterstate;