made r_shownormals value control the length of the vectors shown, rather
[divverent/darkplaces.git] / gl_rmain.c
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 // r_main.c
21
22 #include "quakedef.h"
23 #include "cl_dyntexture.h"
24 #include "r_shadow.h"
25 #include "polygon.h"
26 #include "image.h"
27
28 mempool_t *r_main_mempool;
29 rtexturepool_t *r_main_texturepool;
30
31 //
32 // screen size info
33 //
34 r_refdef_t r_refdef;
35 r_view_t r_view;
36 r_viewcache_t r_viewcache;
37
38 cvar_t r_depthfirst = {CVAR_SAVE, "r_depthfirst", "1", "renders a depth-only version of the scene before normal rendering begins to eliminate overdraw, values: 0 = off, 1 = world depth, 2 = world and model depth"};
39 cvar_t r_nearclip = {0, "r_nearclip", "1", "distance from camera of nearclip plane" };
40 cvar_t r_showbboxes = {0, "r_showbboxes", "0", "shows bounding boxes of server entities, value controls opacity scaling (1 = 10%,  10 = 100%)"};
41 cvar_t r_showsurfaces = {0, "r_showsurfaces", "0", "1 shows surfaces as different colors, or a value of 2 shows triangle draw order (for analyzing whether meshes are optimized for vertex cache)"};
42 cvar_t r_showtris = {0, "r_showtris", "0", "shows triangle outlines, value controls brightness (can be above 1)"};
43 cvar_t r_shownormals = {0, "r_shownormals", "0", "shows per-vertex surface normals and tangent vectors for bumpmapped lighting"};
44 cvar_t r_showlighting = {0, "r_showlighting", "0", "shows areas lit by lights, useful for finding out why some areas of a map render slowly (bright orange = lots of passes = slow), a value of 2 disables depth testing which can be interesting but not very useful"};
45 cvar_t r_showshadowvolumes = {0, "r_showshadowvolumes", "0", "shows areas shadowed by lights, useful for finding out why some areas of a map render slowly (bright blue = lots of passes = slow), a value of 2 disables depth testing which can be interesting but not very useful"};
46 cvar_t r_showcollisionbrushes = {0, "r_showcollisionbrushes", "0", "draws collision brushes in quake3 maps (mode 1), mode 2 disables rendering of world (trippy!)"};
47 cvar_t r_showcollisionbrushes_polygonfactor = {0, "r_showcollisionbrushes_polygonfactor", "-1", "expands outward the brush polygons a little bit, used to make collision brushes appear infront of walls"};
48 cvar_t r_showcollisionbrushes_polygonoffset = {0, "r_showcollisionbrushes_polygonoffset", "0", "nudges brush polygon depth in hardware depth units, used to make collision brushes appear infront of walls"};
49 cvar_t r_showdisabledepthtest = {0, "r_showdisabledepthtest", "0", "disables depth testing on r_show* cvars, allowing you to see what hidden geometry the graphics card is processing"};
50 cvar_t r_drawportals = {0, "r_drawportals", "0", "shows portals (separating polygons) in world interior in quake1 maps"};
51 cvar_t r_drawentities = {0, "r_drawentities","1", "draw entities (doors, players, projectiles, etc)"};
52 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1", "draw your weapon model"};
53 cvar_t r_cullentities_trace = {0, "r_cullentities_trace", "1", "probabistically cull invisible entities"};
54 cvar_t r_cullentities_trace_samples = {0, "r_cullentities_trace_samples", "2", "number of samples to test for entity culling"};
55 cvar_t r_cullentities_trace_enlarge = {0, "r_cullentities_trace_enlarge", "0", "box enlargement for entity culling"};
56 cvar_t r_cullentities_trace_delay = {0, "r_cullentities_trace_delay", "1", "number of seconds until the entity gets actually culled"};
57 cvar_t r_speeds = {0, "r_speeds","0", "displays rendering statistics and per-subsystem timings"};
58 cvar_t r_fullbright = {0, "r_fullbright","0", "makes map very bright and renders faster"};
59 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1", "opacity of water polygons"};
60 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1", "enables dynamic lights (rocket glow and such)"};
61 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1", "enables glowing pixels in quake textures (changes need r_restart to take effect)"};
62 cvar_t r_shadows = {CVAR_SAVE, "r_shadows", "0", "casts fake stencil shadows from models onto the world (rtlights are unaffected by this)"};
63 cvar_t r_shadows_throwdistance = {CVAR_SAVE, "r_shadows_throwdistance", "500", "how far to cast shadows from models"};
64 cvar_t r_q1bsp_skymasking = {0, "r_q1bsp_skymasking", "1", "allows sky polygons in quake1 maps to obscure other geometry"};
65 cvar_t r_polygonoffset_submodel_factor = {0, "r_polygonoffset_submodel_factor", "0", "biases depth values of world submodels such as doors, to prevent z-fighting artifacts in Quake maps"};
66 cvar_t r_polygonoffset_submodel_offset = {0, "r_polygonoffset_submodel_offset", "2", "biases depth values of world submodels such as doors, to prevent z-fighting artifacts in Quake maps"};
67
68 cvar_t gl_fogenable = {0, "gl_fogenable", "0", "nehahra fog enable (for Nehahra compatibility only)"};
69 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25", "nehahra fog density (recommend values below 0.1) (for Nehahra compatibility only)"};
70 cvar_t gl_fogred = {0, "gl_fogred","0.3", "nehahra fog color red value (for Nehahra compatibility only)"};
71 cvar_t gl_foggreen = {0, "gl_foggreen","0.3", "nehahra fog color green value (for Nehahra compatibility only)"};
72 cvar_t gl_fogblue = {0, "gl_fogblue","0.3", "nehahra fog color blue value (for Nehahra compatibility only)"};
73 cvar_t gl_fogstart = {0, "gl_fogstart", "0", "nehahra fog start distance (for Nehahra compatibility only)"};
74 cvar_t gl_fogend = {0, "gl_fogend","0", "nehahra fog end distance (for Nehahra compatibility only)"};
75
76 cvar_t r_textureunits = {0, "r_textureunits", "32", "number of hardware texture units reported by driver (note: setting this to 1 turns off gl_combine)"};
77
78 cvar_t r_glsl = {CVAR_SAVE, "r_glsl", "1", "enables use of OpenGL 2.0 pixel shaders for lighting"};
79 cvar_t r_glsl_offsetmapping = {CVAR_SAVE, "r_glsl_offsetmapping", "0", "offset mapping effect (also known as parallax mapping or virtual displacement mapping)"};
80 cvar_t r_glsl_offsetmapping_reliefmapping = {CVAR_SAVE, "r_glsl_offsetmapping_reliefmapping", "0", "relief mapping effect (higher quality)"};
81 cvar_t r_glsl_offsetmapping_scale = {CVAR_SAVE, "r_glsl_offsetmapping_scale", "0.04", "how deep the offset mapping effect is"};
82 cvar_t r_glsl_deluxemapping = {CVAR_SAVE, "r_glsl_deluxemapping", "1", "use per pixel lighting on deluxemap-compiled q3bsp maps (or a value of 2 forces deluxemap shading even without deluxemaps)"};
83 cvar_t r_glsl_contrastboost = {CVAR_SAVE, "r_glsl_contrastboost", "1", "by how much to multiply the contrast in dark areas (1 is no change)"};
84
85 cvar_t r_water = {CVAR_SAVE, "r_water", "0", "whether to use reflections and refraction on water surfaces (note: r_wateralpha must be set below 1)"};
86 cvar_t r_water_clippingplanebias = {CVAR_SAVE, "r_water_clippingplanebias", "1", "a rather technical setting which avoids black pixels around water edges"};
87 cvar_t r_water_resolutionmultiplier = {CVAR_SAVE, "r_water_resolutionmultiplier", "0.5", "multiplier for screen resolution when rendering refracted/reflected scenes, 1 is full quality, lower values are faster"};
88 cvar_t r_water_refractdistort = {CVAR_SAVE, "r_water_refractdistort", "0.01", "how much water refractions shimmer"};
89 cvar_t r_water_reflectdistort = {CVAR_SAVE, "r_water_reflectdistort", "0.01", "how much water reflections shimmer"};
90
91 cvar_t r_lerpsprites = {CVAR_SAVE, "r_lerpsprites", "1", "enables animation smoothing on sprites (requires r_lerpmodels 1)"};
92 cvar_t r_lerpmodels = {CVAR_SAVE, "r_lerpmodels", "1", "enables animation smoothing on models"};
93 cvar_t r_lerplightstyles = {CVAR_SAVE, "r_lerplightstyles", "0", "enable animation smoothing on flickering lights"};
94 cvar_t r_waterscroll = {CVAR_SAVE, "r_waterscroll", "1", "makes water scroll around, value controls how much"};
95
96 cvar_t r_bloom = {CVAR_SAVE, "r_bloom", "0", "enables bloom effect (makes bright pixels affect neighboring pixels)"};
97 cvar_t r_bloom_colorscale = {CVAR_SAVE, "r_bloom_colorscale", "1", "how bright the glow is"};
98 cvar_t r_bloom_brighten = {CVAR_SAVE, "r_bloom_brighten", "2", "how bright the glow is, after subtract/power"};
99 cvar_t r_bloom_blur = {CVAR_SAVE, "r_bloom_blur", "4", "how large the glow is"};
100 cvar_t r_bloom_resolution = {CVAR_SAVE, "r_bloom_resolution", "320", "what resolution to perform the bloom effect at (independent of screen resolution)"};
101 cvar_t r_bloom_colorexponent = {CVAR_SAVE, "r_bloom_colorexponent", "1", "how exagerated the glow is"};
102 cvar_t r_bloom_colorsubtract = {CVAR_SAVE, "r_bloom_colorsubtract", "0.125", "reduces bloom colors by a certain amount"};
103
104 cvar_t r_hdr = {CVAR_SAVE, "r_hdr", "0", "enables High Dynamic Range bloom effect (higher quality version of r_bloom)"};
105 cvar_t r_hdr_scenebrightness = {CVAR_SAVE, "r_hdr_scenebrightness", "1", "global rendering brightness"};
106 cvar_t r_hdr_glowintensity = {CVAR_SAVE, "r_hdr_glowintensity", "1", "how bright light emitting textures should appear"};
107 cvar_t r_hdr_range = {CVAR_SAVE, "r_hdr_range", "4", "how much dynamic range to render bloom with (equivilant to multiplying r_bloom_brighten by this value and dividing r_bloom_colorscale by this value)"};
108
109 cvar_t r_smoothnormals_areaweighting = {0, "r_smoothnormals_areaweighting", "1", "uses significantly faster (and supposedly higher quality) area-weighted vertex normals and tangent vectors rather than summing normalized triangle normals and tangents"};
110
111 cvar_t developer_texturelogging = {0, "developer_texturelogging", "0", "produces a textures.log file containing names of skins and map textures the engine tried to load"};
112
113 cvar_t gl_lightmaps = {0, "gl_lightmaps", "0", "draws only lightmaps, no texture (for level designers)"};
114
115 cvar_t r_test = {0, "r_test", "0", "internal development use only, leave it alone (usually does nothing anyway)"};
116 cvar_t r_batchmode = {0, "r_batchmode", "1", "selects method of rendering multiple surfaces with one driver call (values are 0, 1, 2, etc...)"};
117 cvar_t r_track_sprites = {CVAR_SAVE, "r_track_sprites", "1", "track SPR_LABEL* sprites by putting them as indicator at the screen border to rotate to"};
118 cvar_t r_track_sprites_flags = {CVAR_SAVE, "r_track_sprites_flags", "1", "1: Rotate sprites accodringly, 2: Make it a continuous rotation"};
119 cvar_t r_track_sprites_scalew = {CVAR_SAVE, "r_track_sprites_scalew", "1", "width scaling of tracked sprites"};
120 cvar_t r_track_sprites_scaleh = {CVAR_SAVE, "r_track_sprites_scaleh", "1", "height scaling of tracked sprites"};
121
122 extern qboolean v_flipped_state;
123
124 typedef struct r_glsl_bloomshader_s
125 {
126         int program;
127         int loc_Texture_Bloom;
128 }
129 r_glsl_bloomshader_t;
130
131 static struct r_bloomstate_s
132 {
133         qboolean enabled;
134         qboolean hdr;
135
136         int bloomwidth, bloomheight;
137
138         int screentexturewidth, screentextureheight;
139         rtexture_t *texture_screen;
140
141         int bloomtexturewidth, bloomtextureheight;
142         rtexture_t *texture_bloom;
143
144         r_glsl_bloomshader_t *shader;
145
146         // arrays for rendering the screen passes
147         float screentexcoord2f[8];
148         float bloomtexcoord2f[8];
149         float offsettexcoord2f[8];
150 }
151 r_bloomstate;
152
153 typedef struct r_waterstate_waterplane_s
154 {
155         rtexture_t *texture_refraction;
156         rtexture_t *texture_reflection;
157         mplane_t plane;
158         int materialflags; // combined flags of all water surfaces on this plane
159         unsigned char pvsbits[(32768+7)>>3]; // FIXME: buffer overflow on huge maps
160         qboolean pvsvalid;
161 }
162 r_waterstate_waterplane_t;
163
164 #define MAX_WATERPLANES 16
165
166 static struct r_waterstate_s
167 {
168         qboolean enabled;
169
170         qboolean renderingscene; // true while rendering a refraction or reflection texture, disables water surfaces
171
172         int waterwidth, waterheight;
173         int texturewidth, textureheight;
174
175         int maxwaterplanes; // same as MAX_WATERPLANES
176         int numwaterplanes;
177         r_waterstate_waterplane_t waterplanes[MAX_WATERPLANES];
178
179         float screenscale[2];
180         float screencenter[2];
181 }
182 r_waterstate;
183
184 // shadow volume bsp struct with automatically growing nodes buffer
185 svbsp_t r_svbsp;
186
187 rtexture_t *r_texture_blanknormalmap;
188 rtexture_t *r_texture_white;
189 rtexture_t *r_texture_grey128;
190 rtexture_t *r_texture_black;
191 rtexture_t *r_texture_notexture;
192 rtexture_t *r_texture_whitecube;
193 rtexture_t *r_texture_normalizationcube;
194 rtexture_t *r_texture_fogattenuation;
195 //rtexture_t *r_texture_fogintensity;
196
197 char r_qwskincache[MAX_SCOREBOARD][MAX_QPATH];
198 skinframe_t *r_qwskincache_skinframe[MAX_SCOREBOARD];
199
200 // vertex coordinates for a quad that covers the screen exactly
201 const static float r_screenvertex3f[12] =
202 {
203         0, 0, 0,
204         1, 0, 0,
205         1, 1, 0,
206         0, 1, 0
207 };
208
209 extern void R_DrawModelShadows(void);
210
211 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
212 {
213         int i;
214         for (i = 0;i < verts;i++)
215         {
216                 out[0] = in[0] * r;
217                 out[1] = in[1] * g;
218                 out[2] = in[2] * b;
219                 out[3] = in[3];
220                 in += 4;
221                 out += 4;
222         }
223 }
224
225 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
226 {
227         int i;
228         for (i = 0;i < verts;i++)
229         {
230                 out[0] = r;
231                 out[1] = g;
232                 out[2] = b;
233                 out[3] = a;
234                 out += 4;
235         }
236 }
237
238 // FIXME: move this to client?
239 void FOG_clear(void)
240 {
241         if (gamemode == GAME_NEHAHRA)
242         {
243                 Cvar_Set("gl_fogenable", "0");
244                 Cvar_Set("gl_fogdensity", "0.2");
245                 Cvar_Set("gl_fogred", "0.3");
246                 Cvar_Set("gl_foggreen", "0.3");
247                 Cvar_Set("gl_fogblue", "0.3");
248         }
249         r_refdef.fog_density = r_refdef.fog_red = r_refdef.fog_green = r_refdef.fog_blue = 0.0f;
250 }
251
252 float FogPoint_World(const vec3_t p)
253 {
254         unsigned int fogmasktableindex = (unsigned int)(VectorDistance((p), r_view.origin) * r_refdef.fogmasktabledistmultiplier);
255         return r_refdef.fogmasktable[min(fogmasktableindex, FOGMASKTABLEWIDTH - 1)];
256 }
257
258 float FogPoint_Model(const vec3_t p)
259 {
260         unsigned int fogmasktableindex = (unsigned int)(VectorDistance((p), rsurface.modelorg) * r_refdef.fogmasktabledistmultiplier);
261         return r_refdef.fogmasktable[min(fogmasktableindex, FOGMASKTABLEWIDTH - 1)];
262 }
263
264 static void R_BuildBlankTextures(void)
265 {
266         unsigned char data[4];
267         data[2] = 128; // normal X
268         data[1] = 128; // normal Y
269         data[0] = 255; // normal Z
270         data[3] = 128; // height
271         r_texture_blanknormalmap = R_LoadTexture2D(r_main_texturepool, "blankbump", 1, 1, data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_PERSISTENT, NULL);
272         data[0] = 255;
273         data[1] = 255;
274         data[2] = 255;
275         data[3] = 255;
276         r_texture_white = R_LoadTexture2D(r_main_texturepool, "blankwhite", 1, 1, data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_PERSISTENT, NULL);
277         data[0] = 128;
278         data[1] = 128;
279         data[2] = 128;
280         data[3] = 255;
281         r_texture_grey128 = R_LoadTexture2D(r_main_texturepool, "blankgrey128", 1, 1, data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_PERSISTENT, NULL);
282         data[0] = 0;
283         data[1] = 0;
284         data[2] = 0;
285         data[3] = 255;
286         r_texture_black = R_LoadTexture2D(r_main_texturepool, "blankblack", 1, 1, data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_PERSISTENT, NULL);
287 }
288
289 static void R_BuildNoTexture(void)
290 {
291         int x, y;
292         unsigned char pix[16][16][4];
293         // this makes a light grey/dark grey checkerboard texture
294         for (y = 0;y < 16;y++)
295         {
296                 for (x = 0;x < 16;x++)
297                 {
298                         if ((y < 8) ^ (x < 8))
299                         {
300                                 pix[y][x][0] = 128;
301                                 pix[y][x][1] = 128;
302                                 pix[y][x][2] = 128;
303                                 pix[y][x][3] = 255;
304                         }
305                         else
306                         {
307                                 pix[y][x][0] = 64;
308                                 pix[y][x][1] = 64;
309                                 pix[y][x][2] = 64;
310                                 pix[y][x][3] = 255;
311                         }
312                 }
313         }
314         r_texture_notexture = R_LoadTexture2D(r_main_texturepool, "notexture", 16, 16, &pix[0][0][0], TEXTYPE_BGRA, TEXF_MIPMAP | TEXF_PERSISTENT, NULL);
315 }
316
317 static void R_BuildWhiteCube(void)
318 {
319         unsigned char data[6*1*1*4];
320         memset(data, 255, sizeof(data));
321         r_texture_whitecube = R_LoadTextureCubeMap(r_main_texturepool, "whitecube", 1, data, TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_PERSISTENT, NULL);
322 }
323
324 static void R_BuildNormalizationCube(void)
325 {
326         int x, y, side;
327         vec3_t v;
328         vec_t s, t, intensity;
329 #define NORMSIZE 64
330         unsigned char data[6][NORMSIZE][NORMSIZE][4];
331         for (side = 0;side < 6;side++)
332         {
333                 for (y = 0;y < NORMSIZE;y++)
334                 {
335                         for (x = 0;x < NORMSIZE;x++)
336                         {
337                                 s = (x + 0.5f) * (2.0f / NORMSIZE) - 1.0f;
338                                 t = (y + 0.5f) * (2.0f / NORMSIZE) - 1.0f;
339                                 switch(side)
340                                 {
341                                 default:
342                                 case 0:
343                                         v[0] = 1;
344                                         v[1] = -t;
345                                         v[2] = -s;
346                                         break;
347                                 case 1:
348                                         v[0] = -1;
349                                         v[1] = -t;
350                                         v[2] = s;
351                                         break;
352                                 case 2:
353                                         v[0] = s;
354                                         v[1] = 1;
355                                         v[2] = t;
356                                         break;
357                                 case 3:
358                                         v[0] = s;
359                                         v[1] = -1;
360                                         v[2] = -t;
361                                         break;
362                                 case 4:
363                                         v[0] = s;
364                                         v[1] = -t;
365                                         v[2] = 1;
366                                         break;
367                                 case 5:
368                                         v[0] = -s;
369                                         v[1] = -t;
370                                         v[2] = -1;
371                                         break;
372                                 }
373                                 intensity = 127.0f / sqrt(DotProduct(v, v));
374                                 data[side][y][x][2] = (unsigned char)(128.0f + intensity * v[0]);
375                                 data[side][y][x][1] = (unsigned char)(128.0f + intensity * v[1]);
376                                 data[side][y][x][0] = (unsigned char)(128.0f + intensity * v[2]);
377                                 data[side][y][x][3] = 255;
378                         }
379                 }
380         }
381         r_texture_normalizationcube = R_LoadTextureCubeMap(r_main_texturepool, "normalcube", NORMSIZE, &data[0][0][0][0], TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_CLAMP | TEXF_PERSISTENT, NULL);
382 }
383
384 static void R_BuildFogTexture(void)
385 {
386         int x, b;
387 #define FOGWIDTH 256
388         unsigned char data1[FOGWIDTH][4];
389         //unsigned char data2[FOGWIDTH][4];
390         for (x = 0;x < FOGWIDTH;x++)
391         {
392                 b = (int)(r_refdef.fogmasktable[x * (FOGMASKTABLEWIDTH - 1) / (FOGWIDTH - 1)] * 255);
393                 data1[x][0] = b;
394                 data1[x][1] = b;
395                 data1[x][2] = b;
396                 data1[x][3] = 255;
397                 //data2[x][0] = 255 - b;
398                 //data2[x][1] = 255 - b;
399                 //data2[x][2] = 255 - b;
400                 //data2[x][3] = 255;
401         }
402         r_texture_fogattenuation = R_LoadTexture2D(r_main_texturepool, "fogattenuation", FOGWIDTH, 1, &data1[0][0], TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_FORCELINEAR | TEXF_CLAMP | TEXF_PERSISTENT, NULL);
403         //r_texture_fogintensity = R_LoadTexture2D(r_main_texturepool, "fogintensity", FOGWIDTH, 1, &data2[0][0], TEXTYPE_BGRA, TEXF_PRECACHE | TEXF_FORCELINEAR | TEXF_CLAMP, NULL);
404 }
405
406 static const char *builtinshaderstring =
407 "// ambient+diffuse+specular+normalmap+attenuation+cubemap+fog shader\n"
408 "// written by Forest 'LordHavoc' Hale\n"
409 "\n"
410 "// common definitions between vertex shader and fragment shader:\n"
411 "\n"
412 "#ifdef __GLSL_CG_DATA_TYPES\n"
413 "# define myhalf half\n"
414 "# define myhvec2 hvec2\n"
415 "# define myhvec3 hvec3\n"
416 "# define myhvec4 hvec4\n"
417 "#else\n"
418 "# define myhalf float\n"
419 "# define myhvec2 vec2\n"
420 "# define myhvec3 vec3\n"
421 "# define myhvec4 vec4\n"
422 "#endif\n"
423 "\n"
424 "varying vec2 TexCoord;\n"
425 "varying vec2 TexCoordLightmap;\n"
426 "\n"
427 "//#ifdef MODE_LIGHTSOURCE\n"
428 "varying vec3 CubeVector;\n"
429 "//#endif\n"
430 "\n"
431 "//#ifdef MODE_LIGHTSOURCE\n"
432 "varying vec3 LightVector;\n"
433 "//#else\n"
434 "//# ifdef MODE_LIGHTDIRECTION\n"
435 "//varying vec3 LightVector;\n"
436 "//# endif\n"
437 "//#endif\n"
438 "\n"
439 "varying vec3 EyeVector;\n"
440 "//#ifdef USEFOG\n"
441 "varying vec3 EyeVectorModelSpace;\n"
442 "//#endif\n"
443 "\n"
444 "varying vec3 VectorS; // direction of S texcoord (sometimes crudely called tangent)\n"
445 "varying vec3 VectorT; // direction of T texcoord (sometimes crudely called binormal)\n"
446 "varying vec3 VectorR; // direction of R texcoord (surface normal)\n"
447 "\n"
448 "//#ifdef MODE_WATER\n"
449 "varying vec4 ModelViewProjectionPosition;\n"
450 "//#else\n"
451 "//# ifdef MODE_REFRACTION\n"
452 "//varying vec4 ModelViewProjectionPosition;\n"
453 "//# else\n"
454 "//#  ifdef USEREFLECTION\n"
455 "//varying vec4 ModelViewProjectionPosition;\n"
456 "//#  endif\n"
457 "//# endif\n"
458 "//#endif\n"
459 "\n"
460 "\n"
461 "\n"
462 "\n"
463 "\n"
464 "// vertex shader specific:\n"
465 "#ifdef VERTEX_SHADER\n"
466 "\n"
467 "uniform vec3 LightPosition;\n"
468 "uniform vec3 EyePosition;\n"
469 "uniform vec3 LightDir;\n"
470 "\n"
471 "// TODO: get rid of tangentt (texcoord2) and use a crossproduct to regenerate it from tangents (texcoord1) and normal (texcoord3)\n"
472 "\n"
473 "void main(void)\n"
474 "{\n"
475 "       gl_FrontColor = gl_Color;\n"
476 "       // copy the surface texcoord\n"
477 "       TexCoord = vec2(gl_TextureMatrix[0] * gl_MultiTexCoord0);\n"
478 "#ifndef MODE_LIGHTSOURCE\n"
479 "# ifndef MODE_LIGHTDIRECTION\n"
480 "       TexCoordLightmap = vec2(gl_MultiTexCoord4);\n"
481 "# endif\n"
482 "#endif\n"
483 "\n"
484 "#ifdef MODE_LIGHTSOURCE\n"
485 "       // transform vertex position into light attenuation/cubemap space\n"
486 "       // (-1 to +1 across the light box)\n"
487 "       CubeVector = vec3(gl_TextureMatrix[3] * gl_Vertex);\n"
488 "\n"
489 "       // transform unnormalized light direction into tangent space\n"
490 "       // (we use unnormalized to ensure that it interpolates correctly and then\n"
491 "       //  normalize it per pixel)\n"
492 "       vec3 lightminusvertex = LightPosition - gl_Vertex.xyz;\n"
493 "       LightVector.x = dot(lightminusvertex, gl_MultiTexCoord1.xyz);\n"
494 "       LightVector.y = dot(lightminusvertex, gl_MultiTexCoord2.xyz);\n"
495 "       LightVector.z = dot(lightminusvertex, gl_MultiTexCoord3.xyz);\n"
496 "#endif\n"
497 "\n"
498 "#ifdef MODE_LIGHTDIRECTION\n"
499 "       LightVector.x = dot(LightDir, gl_MultiTexCoord1.xyz);\n"
500 "       LightVector.y = dot(LightDir, gl_MultiTexCoord2.xyz);\n"
501 "       LightVector.z = dot(LightDir, gl_MultiTexCoord3.xyz);\n"
502 "#endif\n"
503 "\n"
504 "       // transform unnormalized eye direction into tangent space\n"
505 "#ifndef USEFOG\n"
506 "       vec3 EyeVectorModelSpace;\n"
507 "#endif\n"
508 "       EyeVectorModelSpace = EyePosition - gl_Vertex.xyz;\n"
509 "       EyeVector.x = dot(EyeVectorModelSpace, gl_MultiTexCoord1.xyz);\n"
510 "       EyeVector.y = dot(EyeVectorModelSpace, gl_MultiTexCoord2.xyz);\n"
511 "       EyeVector.z = dot(EyeVectorModelSpace, gl_MultiTexCoord3.xyz);\n"
512 "\n"
513 "#ifdef MODE_LIGHTDIRECTIONMAP_MODELSPACE\n"
514 "       VectorS = gl_MultiTexCoord1.xyz;\n"
515 "       VectorT = gl_MultiTexCoord2.xyz;\n"
516 "       VectorR = gl_MultiTexCoord3.xyz;\n"
517 "#endif\n"
518 "\n"
519 "//#if defined(MODE_WATER) || defined(MODE_REFRACTION) || defined(USEREFLECTION)\n"
520 "//     ModelViewProjectionPosition = gl_Vertex * gl_ModelViewProjectionMatrix;\n"
521 "//     //ModelViewProjectionPosition_svector = (gl_Vertex + vec4(gl_MultiTexCoord1.xyz, 0)) * gl_ModelViewProjectionMatrix - ModelViewProjectionPosition;\n"
522 "//     //ModelViewProjectionPosition_tvector = (gl_Vertex + vec4(gl_MultiTexCoord2.xyz, 0)) * gl_ModelViewProjectionMatrix - ModelViewProjectionPosition;\n"
523 "//#endif\n"
524 "\n"
525 "// transform vertex to camera space, using ftransform to match non-VS\n"
526 "       // rendering\n"
527 "       gl_Position = ftransform();\n"
528 "\n"
529 "#ifdef MODE_WATER\n"
530 "       ModelViewProjectionPosition = gl_Position;\n"
531 "#endif\n"
532 "#ifdef MODE_REFRACTION\n"
533 "       ModelViewProjectionPosition = gl_Position;\n"
534 "#endif\n"
535 "#ifdef USEREFLECTION\n"
536 "       ModelViewProjectionPosition = gl_Position;\n"
537 "#endif\n"
538 "}\n"
539 "\n"
540 "#endif // VERTEX_SHADER\n"
541 "\n"
542 "\n"
543 "\n"
544 "\n"
545 "// fragment shader specific:\n"
546 "#ifdef FRAGMENT_SHADER\n"
547 "\n"
548 "// 13 textures, we can only use up to 16 on DX9-class hardware\n"
549 "uniform sampler2D Texture_Normal;\n"
550 "uniform sampler2D Texture_Color;\n"
551 "uniform sampler2D Texture_Gloss;\n"
552 "uniform samplerCube Texture_Cube;\n"
553 "uniform sampler2D Texture_Attenuation;\n"
554 "uniform sampler2D Texture_FogMask;\n"
555 "uniform sampler2D Texture_Pants;\n"
556 "uniform sampler2D Texture_Shirt;\n"
557 "uniform sampler2D Texture_Lightmap;\n"
558 "uniform sampler2D Texture_Deluxemap;\n"
559 "uniform sampler2D Texture_Glow;\n"
560 "uniform sampler2D Texture_Reflection;\n"
561 "uniform sampler2D Texture_Refraction;\n"
562 "\n"
563 "uniform myhvec3 LightColor;\n"
564 "uniform myhvec3 AmbientColor;\n"
565 "uniform myhvec3 DiffuseColor;\n"
566 "uniform myhvec3 SpecularColor;\n"
567 "uniform myhvec3 Color_Pants;\n"
568 "uniform myhvec3 Color_Shirt;\n"
569 "uniform myhvec3 FogColor;\n"
570 "\n"
571 "//#ifdef MODE_WATER\n"
572 "uniform vec4 DistortScaleRefractReflect;\n"
573 "uniform vec4 ScreenScaleRefractReflect;\n"
574 "uniform vec4 ScreenCenterRefractReflect;\n"
575 "uniform myhvec4 RefractColor;\n"
576 "uniform myhvec4 ReflectColor;\n"
577 "uniform myhalf ReflectFactor;\n"
578 "uniform myhalf ReflectOffset;\n"
579 "//#else\n"
580 "//# ifdef MODE_REFRACTION\n"
581 "//uniform vec4 DistortScaleRefractReflect;\n"
582 "//uniform vec4 ScreenScaleRefractReflect;\n"
583 "//uniform vec4 ScreenCenterRefractReflect;\n"
584 "//uniform myhvec4 RefractColor;\n"
585 "//#  ifdef USEREFLECTION\n"
586 "//uniform myhvec4 ReflectColor;\n"
587 "//#  endif\n"
588 "//# else\n"
589 "//#  ifdef USEREFLECTION\n"
590 "//uniform vec4 DistortScaleRefractReflect;\n"
591 "//uniform vec4 ScreenScaleRefractReflect;\n"
592 "//uniform vec4 ScreenCenterRefractReflect;\n"
593 "//uniform myhvec4 ReflectColor;\n"
594 "//#  endif\n"
595 "//# endif\n"
596 "//#endif\n"
597 "\n"
598 "uniform myhalf GlowScale;\n"
599 "uniform myhalf SceneBrightness;\n"
600 "#ifdef USECONTRASTBOOST\n"
601 "uniform myhalf ContrastBoostCoeff;\n"
602 "#endif\n"
603 "\n"
604 "uniform float OffsetMapping_Scale;\n"
605 "uniform float OffsetMapping_Bias;\n"
606 "uniform float FogRangeRecip;\n"
607 "\n"
608 "uniform myhalf AmbientScale;\n"
609 "uniform myhalf DiffuseScale;\n"
610 "uniform myhalf SpecularScale;\n"
611 "uniform myhalf SpecularPower;\n"
612 "\n"
613 "#ifdef USEOFFSETMAPPING\n"
614 "vec2 OffsetMapping(vec2 TexCoord)\n"
615 "{\n"
616 "#ifdef USEOFFSETMAPPING_RELIEFMAPPING\n"
617 "       // 14 sample relief mapping: linear search and then binary search\n"
618 "       // this basically steps forward a small amount repeatedly until it finds\n"
619 "       // itself inside solid, then jitters forward and back using decreasing\n"
620 "       // amounts to find the impact\n"
621 "       //vec3 OffsetVector = vec3(EyeVector.xy * ((1.0 / EyeVector.z) * OffsetMapping_Scale) * vec2(-1, 1), -1);\n"
622 "       //vec3 OffsetVector = vec3(normalize(EyeVector.xy) * OffsetMapping_Scale * vec2(-1, 1), -1);\n"
623 "       vec3 OffsetVector = vec3(normalize(EyeVector).xy * OffsetMapping_Scale * vec2(-1, 1), -1);\n"
624 "       vec3 RT = vec3(TexCoord, 1);\n"
625 "       OffsetVector *= 0.1;\n"
626 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
627 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
628 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
629 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
630 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
631 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
632 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
633 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
634 "       RT += OffsetVector *  step(texture2D(Texture_Normal, RT.xy).a, RT.z);\n"
635 "       RT += OffsetVector * (step(texture2D(Texture_Normal, RT.xy).a, RT.z)          - 0.5);\n"
636 "       RT += OffsetVector * (step(texture2D(Texture_Normal, RT.xy).a, RT.z) * 0.5    - 0.25);\n"
637 "       RT += OffsetVector * (step(texture2D(Texture_Normal, RT.xy).a, RT.z) * 0.25   - 0.125);\n"
638 "       RT += OffsetVector * (step(texture2D(Texture_Normal, RT.xy).a, RT.z) * 0.125  - 0.0625);\n"
639 "       RT += OffsetVector * (step(texture2D(Texture_Normal, RT.xy).a, RT.z) * 0.0625 - 0.03125);\n"
640 "       return RT.xy;\n"
641 "#else\n"
642 "       // 3 sample offset mapping (only 3 samples because of ATI Radeon 9500-9800/X300 limits)\n"
643 "       // this basically moves forward the full distance, and then backs up based\n"
644 "       // on height of samples\n"
645 "       //vec2 OffsetVector = vec2(EyeVector.xy * ((1.0 / EyeVector.z) * OffsetMapping_Scale) * vec2(-1, 1));\n"
646 "       //vec2 OffsetVector = vec2(normalize(EyeVector.xy) * OffsetMapping_Scale * vec2(-1, 1));\n"
647 "       vec2 OffsetVector = vec2(normalize(EyeVector).xy * OffsetMapping_Scale * vec2(-1, 1));\n"
648 "       TexCoord += OffsetVector;\n"
649 "       OffsetVector *= 0.333;\n"
650 "       TexCoord -= OffsetVector * texture2D(Texture_Normal, TexCoord).a;\n"
651 "       TexCoord -= OffsetVector * texture2D(Texture_Normal, TexCoord).a;\n"
652 "       TexCoord -= OffsetVector * texture2D(Texture_Normal, TexCoord).a;\n"
653 "       return TexCoord;\n"
654 "#endif\n"
655 "}\n"
656 "#endif // USEOFFSETMAPPING\n"
657 "\n"
658 "#ifdef MODE_WATER\n"
659 "\n"
660 "// water pass\n"
661 "void main(void)\n"
662 "{\n"
663 "#ifdef USEOFFSETMAPPING\n"
664 "       // apply offsetmapping\n"
665 "       vec2 TexCoordOffset = OffsetMapping(TexCoord);\n"
666 "#define TexCoord TexCoordOffset\n"
667 "#endif\n"
668 "\n"
669 "       vec4 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect * (1.0 / ModelViewProjectionPosition.w);\n"
670 "       //vec4 ScreenTexCoord = (ModelViewProjectionPosition.xyxy + normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5)).xyxy * DistortScaleRefractReflect * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
671 "       vec4 ScreenTexCoord = ModelViewProjectionPosition.xyxy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect + vec2(normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5))).xyxy * DistortScaleRefractReflect;\n"
672 "       float Fresnel = pow(min(1.0, 1.0 - float(normalize(EyeVector).z)), 5.0) * ReflectFactor + ReflectOffset;\n"
673 "       gl_FragColor = mix(texture2D(Texture_Refraction, ScreenTexCoord.xy) * RefractColor, texture2D(Texture_Reflection, ScreenTexCoord.zw) * ReflectColor, Fresnel);\n"
674 "}\n"
675 "\n"
676 "#else // MODE_WATER\n"
677 "#ifdef MODE_REFRACTION\n"
678 "\n"
679 "// refraction pass\n"
680 "void main(void)\n"
681 "{\n"
682 "#ifdef USEOFFSETMAPPING\n"
683 "       // apply offsetmapping\n"
684 "       vec2 TexCoordOffset = OffsetMapping(TexCoord);\n"
685 "#define TexCoord TexCoordOffset\n"
686 "#endif\n"
687 "\n"
688 "       vec2 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect.xy * (1.0 / ModelViewProjectionPosition.w);\n"
689 "       //vec2 ScreenTexCoord = (ModelViewProjectionPosition.xy + normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5)).xy * DistortScaleRefractReflect.xy * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
690 "       vec2 ScreenTexCoord = ModelViewProjectionPosition.xy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy + vec2(normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5))).xy * DistortScaleRefractReflect.xy;\n"
691 "       gl_FragColor = texture2D(Texture_Refraction, ScreenTexCoord) * RefractColor;\n"
692 "}\n"
693 "\n"
694 "#else // MODE_REFRACTION\n"
695 "void main(void)\n"
696 "{\n"
697 "#ifdef USEOFFSETMAPPING\n"
698 "       // apply offsetmapping\n"
699 "       vec2 TexCoordOffset = OffsetMapping(TexCoord);\n"
700 "#define TexCoord TexCoordOffset\n"
701 "#endif\n"
702 "\n"
703 "       // combine the diffuse textures (base, pants, shirt)\n"
704 "       myhvec4 color = myhvec4(texture2D(Texture_Color, TexCoord));\n"
705 "#ifdef USECOLORMAPPING\n"
706 "       color.rgb += myhvec3(texture2D(Texture_Pants, TexCoord)) * Color_Pants + myhvec3(texture2D(Texture_Shirt, TexCoord)) * Color_Shirt;\n"
707 "#endif\n"
708 "\n"
709 "\n"
710 "\n"
711 "\n"
712 "#ifdef MODE_LIGHTSOURCE\n"
713 "       // light source\n"
714 "\n"
715 "       // calculate surface normal, light normal, and specular normal\n"
716 "       // compute color intensity for the two textures (colormap and glossmap)\n"
717 "       // scale by light color and attenuation as efficiently as possible\n"
718 "       // (do as much scalar math as possible rather than vector math)\n"
719 "# ifdef USESPECULAR\n"
720 "       myhvec3 surfacenormal = normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5));\n"
721 "       myhvec3 diffusenormal = myhvec3(normalize(LightVector));\n"
722 "       myhvec3 specularnormal = normalize(diffusenormal + myhvec3(normalize(EyeVector)));\n"
723 "\n"
724 "       // calculate directional shading\n"
725 "       color.rgb = LightColor * myhalf(texture2D(Texture_Attenuation, vec2(length(CubeVector), 0.0))) * (color.rgb * (AmbientScale + DiffuseScale * myhalf(max(float(dot(surfacenormal, diffusenormal)), 0.0))) + (SpecularScale * pow(myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower)) * myhvec3(texture2D(Texture_Gloss, TexCoord)));\n"
726 "# else\n"
727 "#  ifdef USEDIFFUSE\n"
728 "       myhvec3 surfacenormal = normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5));\n"
729 "       myhvec3 diffusenormal = myhvec3(normalize(LightVector));\n"
730 "\n"
731 "       // calculate directional shading\n"
732 "       color.rgb = color.rgb * LightColor * (myhalf(texture2D(Texture_Attenuation, vec2(length(CubeVector), 0.0))) * (AmbientScale + DiffuseScale * myhalf(max(float(dot(surfacenormal, diffusenormal)), 0.0))));\n"
733 "#  else\n"
734 "       // calculate directionless shading\n"
735 "       color.rgb = color.rgb * LightColor * myhalf(texture2D(Texture_Attenuation, vec2(length(CubeVector), 0.0)));\n"
736 "#  endif\n"
737 "# endif\n"
738 "\n"
739 "# ifdef USECUBEFILTER\n"
740 "       // apply light cubemap filter\n"
741 "       //color.rgb *= normalize(CubeVector) * 0.5 + 0.5;//vec3(textureCube(Texture_Cube, CubeVector));\n"
742 "       color.rgb *= myhvec3(textureCube(Texture_Cube, CubeVector));\n"
743 "# endif\n"
744 "       color *= myhvec4(gl_Color);\n"
745 "#endif // MODE_LIGHTSOURCE\n"
746 "\n"
747 "\n"
748 "\n"
749 "\n"
750 "#ifdef MODE_LIGHTDIRECTION\n"
751 "       // directional model lighting\n"
752 "# ifdef USESPECULAR\n"
753 "       // get the surface normal and light normal\n"
754 "       myhvec3 surfacenormal = normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5));\n"
755 "       myhvec3 diffusenormal = myhvec3(LightVector);\n"
756 "\n"
757 "       // calculate directional shading\n"
758 "       color.rgb *= AmbientColor + DiffuseColor * myhalf(max(float(dot(surfacenormal, diffusenormal)), 0.0));\n"
759 "       myhvec3 specularnormal = normalize(diffusenormal + myhvec3(normalize(EyeVector)));\n"
760 "       color.rgb += myhvec3(texture2D(Texture_Gloss, TexCoord)) * SpecularColor * pow(myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower);\n"
761 "# else\n"
762 "#  ifdef USEDIFFUSE\n"
763 "       // get the surface normal and light normal\n"
764 "       myhvec3 surfacenormal = normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5));\n"
765 "       myhvec3 diffusenormal = myhvec3(LightVector);\n"
766 "\n"
767 "       // calculate directional shading\n"
768 "       color.rgb *= AmbientColor + DiffuseColor * myhalf(max(float(dot(surfacenormal, diffusenormal)), 0.0));\n"
769 "#  else\n"
770 "       color.rgb *= AmbientColor;\n"
771 "#  endif\n"
772 "# endif\n"
773 "\n"
774 "       color *= myhvec4(gl_Color);\n"
775 "#endif // MODE_LIGHTDIRECTION\n"
776 "\n"
777 "\n"
778 "\n"
779 "\n"
780 "#ifdef MODE_LIGHTDIRECTIONMAP_MODELSPACE\n"
781 "       // deluxemap lightmapping using light vectors in modelspace (evil q3map2)\n"
782 "\n"
783 "       // get the surface normal and light normal\n"
784 "       myhvec3 surfacenormal = normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5));\n"
785 "\n"
786 "       myhvec3 diffusenormal_modelspace = myhvec3(texture2D(Texture_Deluxemap, TexCoordLightmap)) - myhvec3(0.5);\n"
787 "       myhvec3 diffusenormal = normalize(myhvec3(dot(diffusenormal_modelspace, myhvec3(VectorS)), dot(diffusenormal_modelspace, myhvec3(VectorT)), dot(diffusenormal_modelspace, myhvec3(VectorR))));\n"
788 "       // calculate directional shading\n"
789 "       myhvec3 tempcolor = color.rgb * (DiffuseScale * myhalf(max(float(dot(surfacenormal, diffusenormal)), 0.0)));\n"
790 "# ifdef USESPECULAR\n"
791 "       myhvec3 specularnormal = myhvec3(normalize(diffusenormal + myhvec3(normalize(EyeVector))));\n"
792 "       tempcolor += myhvec3(texture2D(Texture_Gloss, TexCoord)) * SpecularScale * pow(myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower);\n"
793 "# endif\n"
794 "\n"
795 "       // apply lightmap color\n"
796 "       color.rgb = color.rgb * AmbientScale + tempcolor * myhvec3(texture2D(Texture_Lightmap, TexCoordLightmap)) * myhvec3(gl_Color);\n"
797 "       color.a *= myhalf(gl_Color.a);\n"
798 "#endif // MODE_LIGHTDIRECTIONMAP_MODELSPACE\n"
799 "\n"
800 "\n"
801 "\n"
802 "\n"
803 "#ifdef MODE_LIGHTDIRECTIONMAP_TANGENTSPACE\n"
804 "       // deluxemap lightmapping using light vectors in tangentspace (hmap2 -light)\n"
805 "\n"
806 "       // get the surface normal and light normal\n"
807 "       myhvec3 surfacenormal = normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5));\n"
808 "\n"
809 "       myhvec3 diffusenormal = normalize(myhvec3(texture2D(Texture_Deluxemap, TexCoordLightmap)) - myhvec3(0.5));\n"
810 "       // calculate directional shading\n"
811 "       myhvec3 tempcolor = color.rgb * (DiffuseScale * myhalf(max(float(dot(surfacenormal, diffusenormal)), 0.0)));\n"
812 "# ifdef USESPECULAR\n"
813 "       myhvec3 specularnormal = myhvec3(normalize(diffusenormal + myhvec3(normalize(EyeVector))));\n"
814 "       tempcolor += myhvec3(texture2D(Texture_Gloss, TexCoord)) * SpecularScale * pow(myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower);\n"
815 "# endif\n"
816 "\n"
817 "       // apply lightmap color\n"
818 "       color.rgb = color.rgb * AmbientScale + tempcolor * myhvec3(texture2D(Texture_Lightmap, TexCoordLightmap)) * myhvec3(gl_Color);\n"
819 "       color.a *= myhalf(gl_Color.a);\n"
820 "#endif // MODE_LIGHTDIRECTIONMAP_TANGENTSPACE\n"
821 "\n"
822 "\n"
823 "\n"
824 "\n"
825 "#ifdef MODE_LIGHTMAP\n"
826 "       // apply lightmap color\n"
827 "       color *= myhvec4(texture2D(Texture_Lightmap, TexCoordLightmap)) * myhvec4(gl_Color) * myhvec4(myhvec3(DiffuseScale), 1) + myhvec4(myhvec3(AmbientScale), 0);\n"
828 "#endif // MODE_LIGHTMAP\n"
829 "\n"
830 "\n"
831 "\n"
832 "\n"
833 "\n"
834 "\n"
835 "\n"
836 "\n"
837 "#ifdef USEGLOW\n"
838 "       color.rgb += myhvec3(texture2D(Texture_Glow, TexCoord)) * GlowScale;\n"
839 "#endif\n"
840 "\n"
841 "#ifndef MODE_LIGHTSOURCE\n"
842 "# ifdef USEREFLECTION\n"
843 "       vec4 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect * (1.0 / ModelViewProjectionPosition.w);\n"
844 "       //vec4 ScreenTexCoord = (ModelViewProjectionPosition.xyxy + normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5)).xyxy * DistortScaleRefractReflect * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
845 "       vec4 ScreenTexCoord = ModelViewProjectionPosition.xyxy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect + vec3(normalize(myhvec3(texture2D(Texture_Normal, TexCoord)) - myhvec3(0.5))).xyxy * DistortScaleRefractReflect;\n"
846 "       color.rgb = mix(color.rgb, myhvec3(texture2D(Texture_Reflection, ScreenTexCoord.zw)) * ReflectColor.rgb, ReflectColor.a);\n"
847 "# endif\n"
848 "#endif\n"
849 "\n"
850 "#ifdef USEFOG\n"
851 "       // apply fog\n"
852 "       color.rgb = mix(FogColor, color.rgb, myhalf(texture2D(Texture_FogMask, myhvec2(length(EyeVectorModelSpace)*FogRangeRecip, 0.0))));\n"
853 "#endif\n"
854 "\n"
855 "#ifdef USECONTRASTBOOST\n"
856 "       color.rgb = color.rgb / (ContrastBoostCoeff * color.rgb + myhvec3(1, 1, 1));\n"
857 "#endif\n"
858 "\n"
859 "       color.rgb *= SceneBrightness;\n"
860 "\n"
861 "       gl_FragColor = vec4(color);\n"
862 "}\n"
863 "#endif // MODE_REFRACTION\n"
864 "#endif // MODE_WATER\n"
865 "\n"
866 "#endif // FRAGMENT_SHADER\n"
867 ;
868
869 #define SHADERPERMUTATION_COLORMAPPING (1<<0) // indicates this is a colormapped skin
870 #define SHADERPERMUTATION_CONTRASTBOOST (1<<1) // r_glsl_contrastboost boosts the contrast at low color levels (similar to gamma)
871 #define SHADERPERMUTATION_FOG (1<<2) // tint the color by fog color or black if using additive blend mode
872 #define SHADERPERMUTATION_CUBEFILTER (1<<3) // (lightsource) use cubemap light filter
873 #define SHADERPERMUTATION_GLOW (1<<4) // (lightmap) blend in an additive glow texture
874 #define SHADERPERMUTATION_DIFFUSE (1<<5) // (lightsource) whether to use directional shading
875 #define SHADERPERMUTATION_SPECULAR (1<<6) // (lightsource or deluxemapping) render specular effects
876 #define SHADERPERMUTATION_REFLECTION (1<<7) // normalmap-perturbed reflection of the scene infront of the surface, preformed as an overlay on the surface
877 #define SHADERPERMUTATION_OFFSETMAPPING (1<<8) // adjust texcoords to roughly simulate a displacement mapped surface
878 #define SHADERPERMUTATION_OFFSETMAPPING_RELIEFMAPPING (1<<9) // adjust texcoords to accurately simulate a displacement mapped surface (requires OFFSETMAPPING to also be set!)
879 #define SHADERPERMUTATION_MODEBASE (1<<10) // multiplier for the SHADERMODE_ values to get a valid index
880
881 // NOTE: MUST MATCH ORDER OF SHADERPERMUTATION_* DEFINES!
882 const char *shaderpermutationinfo[][2] =
883 {
884         {"#define USECOLORMAPPING\n", " colormapping"},
885         {"#define USECONTRASTBOOST\n", " contrastboost"},
886         {"#define USEFOG\n", " fog"},
887         {"#define USECUBEFILTER\n", " cubefilter"},
888         {"#define USEGLOW\n", " glow"},
889         {"#define USEDIFFUSE\n", " diffuse"},
890         {"#define USESPECULAR\n", " specular"},
891         {"#define USEREFLECTION\n", " reflection"},
892         {"#define USEOFFSETMAPPING\n", " offsetmapping"},
893         {"#define USEOFFSETMAPPING_RELIEFMAPPING\n", " reliefmapping"},
894         {NULL, NULL}
895 };
896
897 // this enum is multiplied by SHADERPERMUTATION_MODEBASE
898 typedef enum shadermode_e
899 {
900         SHADERMODE_LIGHTMAP, // (lightmap) use directional pixel shading from fixed light direction (q3bsp)
901         SHADERMODE_LIGHTDIRECTIONMAP_MODELSPACE, // (lightmap) use directional pixel shading from texture containing modelspace light directions (deluxemap)
902         SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE, // (lightmap) use directional pixel shading from texture containing tangentspace light directions (deluxemap)
903         SHADERMODE_LIGHTDIRECTION, // (lightmap) use directional pixel shading from fixed light direction (q3bsp)
904         SHADERMODE_LIGHTSOURCE, // (lightsource) use directional pixel shading from light source (rtlight)
905         SHADERMODE_REFRACTION, // refract background (the material is rendered normally after this pass)
906         SHADERMODE_WATER, // refract background and reflection (the material is rendered normally after this pass)
907         SHADERMODE_COUNT
908 }
909 shadermode_t;
910
911 // NOTE: MUST MATCH ORDER OF SHADERMODE_* ENUMS!
912 const char *shadermodeinfo[][2] =
913 {
914         {"#define MODE_LIGHTMAP\n", " lightmap"},
915         {"#define MODE_LIGHTDIRECTIONMAP_MODELSPACE\n", " lightdirectionmap_modelspace"},
916         {"#define MODE_LIGHTDIRECTIONMAP_TANGENTSPACE\n", " lightdirectionmap_tangentspace"},
917         {"#define MODE_LIGHTDIRECTION\n", " lightdirection"},
918         {"#define MODE_LIGHTSOURCE\n", " lightsource"},
919         {"#define MODE_REFRACTION\n", " refraction"},
920         {"#define MODE_WATER\n", " water"},
921         {NULL, NULL}
922 };
923
924 #define SHADERPERMUTATION_INDICES (SHADERPERMUTATION_MODEBASE * SHADERMODE_COUNT)
925
926 typedef struct r_glsl_permutation_s
927 {
928         // indicates if we have tried compiling this permutation already
929         qboolean compiled;
930         // 0 if compilation failed
931         int program;
932         // locations of detected uniforms in program object, or -1 if not found
933         int loc_Texture_Normal;
934         int loc_Texture_Color;
935         int loc_Texture_Gloss;
936         int loc_Texture_Cube;
937         int loc_Texture_Attenuation;
938         int loc_Texture_FogMask;
939         int loc_Texture_Pants;
940         int loc_Texture_Shirt;
941         int loc_Texture_Lightmap;
942         int loc_Texture_Deluxemap;
943         int loc_Texture_Glow;
944         int loc_Texture_Refraction;
945         int loc_Texture_Reflection;
946         int loc_FogColor;
947         int loc_LightPosition;
948         int loc_EyePosition;
949         int loc_LightColor;
950         int loc_Color_Pants;
951         int loc_Color_Shirt;
952         int loc_FogRangeRecip;
953         int loc_AmbientScale;
954         int loc_DiffuseScale;
955         int loc_SpecularScale;
956         int loc_SpecularPower;
957         int loc_GlowScale;
958         int loc_SceneBrightness; // or: Scenebrightness * ContrastBoost
959         int loc_OffsetMapping_Scale;
960         int loc_AmbientColor;
961         int loc_DiffuseColor;
962         int loc_SpecularColor;
963         int loc_LightDir;
964         int loc_ContrastBoostCoeff; // 1 - 1/ContrastBoost
965         int loc_DistortScaleRefractReflect;
966         int loc_ScreenScaleRefractReflect;
967         int loc_ScreenCenterRefractReflect;
968         int loc_RefractColor;
969         int loc_ReflectColor;
970         int loc_ReflectFactor;
971         int loc_ReflectOffset;
972 }
973 r_glsl_permutation_t;
974
975 // information about each possible shader permutation
976 r_glsl_permutation_t r_glsl_permutations[SHADERPERMUTATION_INDICES];
977 // currently selected permutation
978 r_glsl_permutation_t *r_glsl_permutation;
979
980 // these are additional flags used only by R_GLSL_CompilePermutation
981 #define SHADERTYPE_USES_VERTEXSHADER (1<<0)
982 #define SHADERTYPE_USES_GEOMETRYSHADER (1<<1)
983 #define SHADERTYPE_USES_FRAGMENTSHADER (1<<2)
984
985 static void R_GLSL_CompilePermutation(const char *filename, int permutation, int shadertype)
986 {
987         int i;
988         qboolean shaderfound;
989         r_glsl_permutation_t *p = r_glsl_permutations + permutation;
990         int vertstrings_count;
991         int geomstrings_count;
992         int fragstrings_count;
993         char *shaderstring;
994         const char *vertstrings_list[32+1];
995         const char *geomstrings_list[32+1];
996         const char *fragstrings_list[32+1];
997         char permutationname[256];
998         if (p->compiled)
999                 return;
1000         p->compiled = true;
1001         p->program = 0;
1002         vertstrings_list[0] = "#define VERTEX_SHADER\n";
1003         geomstrings_list[0] = "#define GEOMETRY_SHADER\n";
1004         fragstrings_list[0] = "#define FRAGMENT_SHADER\n";
1005         vertstrings_count = 1;
1006         geomstrings_count = 1;
1007         fragstrings_count = 1;
1008         permutationname[0] = 0;
1009         i = permutation / SHADERPERMUTATION_MODEBASE;
1010         vertstrings_list[vertstrings_count++] = shadermodeinfo[i][0];
1011         geomstrings_list[geomstrings_count++] = shadermodeinfo[i][0];
1012         fragstrings_list[fragstrings_count++] = shadermodeinfo[i][0];
1013         strlcat(permutationname, shadermodeinfo[i][1], sizeof(permutationname));
1014         for (i = 0;shaderpermutationinfo[i][0];i++)
1015         {
1016                 if (permutation & (1<<i))
1017                 {
1018                         vertstrings_list[vertstrings_count++] = shaderpermutationinfo[i][0];
1019                         geomstrings_list[geomstrings_count++] = shaderpermutationinfo[i][0];
1020                         fragstrings_list[fragstrings_count++] = shaderpermutationinfo[i][0];
1021                         strlcat(permutationname, shaderpermutationinfo[i][1], sizeof(permutationname));
1022                 }
1023                 else
1024                 {
1025                         // keep line numbers correct
1026                         vertstrings_list[vertstrings_count++] = "\n";
1027                         geomstrings_list[geomstrings_count++] = "\n";
1028                         fragstrings_list[fragstrings_count++] = "\n";
1029                 }
1030         }
1031         shaderstring = (char *)FS_LoadFile(filename, r_main_mempool, false, NULL);
1032         shaderfound = false;
1033         if (shaderstring)
1034         {
1035                 Con_DPrint("from disk... ");
1036                 vertstrings_list[vertstrings_count++] = shaderstring;
1037                 geomstrings_list[geomstrings_count++] = shaderstring;
1038                 fragstrings_list[fragstrings_count++] = shaderstring;
1039                 shaderfound = true;
1040         }
1041         else if (!strcmp(filename, "glsl/default.glsl"))
1042         {
1043                 vertstrings_list[vertstrings_count++] = builtinshaderstring;
1044                 geomstrings_list[geomstrings_count++] = builtinshaderstring;
1045                 fragstrings_list[fragstrings_count++] = builtinshaderstring;
1046                 shaderfound = true;
1047         }
1048         // clear any lists that are not needed by this shader
1049         if (!(shadertype & SHADERTYPE_USES_VERTEXSHADER))
1050                 vertstrings_count = 0;
1051         if (!(shadertype & SHADERTYPE_USES_GEOMETRYSHADER))
1052                 geomstrings_count = 0;
1053         if (!(shadertype & SHADERTYPE_USES_FRAGMENTSHADER))
1054                 fragstrings_count = 0;
1055         // compile the shader program
1056         if (shaderfound && vertstrings_count + geomstrings_count + fragstrings_count)
1057                 p->program = GL_Backend_CompileProgram(vertstrings_count, vertstrings_list, geomstrings_count, geomstrings_list, fragstrings_count, fragstrings_list);
1058         if (p->program)
1059         {
1060                 CHECKGLERROR
1061                 qglUseProgramObjectARB(p->program);CHECKGLERROR
1062                 // look up all the uniform variable names we care about, so we don't
1063                 // have to look them up every time we set them
1064                 p->loc_Texture_Normal      = qglGetUniformLocationARB(p->program, "Texture_Normal");
1065                 p->loc_Texture_Color       = qglGetUniformLocationARB(p->program, "Texture_Color");
1066                 p->loc_Texture_Gloss       = qglGetUniformLocationARB(p->program, "Texture_Gloss");
1067                 p->loc_Texture_Cube        = qglGetUniformLocationARB(p->program, "Texture_Cube");
1068                 p->loc_Texture_Attenuation = qglGetUniformLocationARB(p->program, "Texture_Attenuation");
1069                 p->loc_Texture_FogMask     = qglGetUniformLocationARB(p->program, "Texture_FogMask");
1070                 p->loc_Texture_Pants       = qglGetUniformLocationARB(p->program, "Texture_Pants");
1071                 p->loc_Texture_Shirt       = qglGetUniformLocationARB(p->program, "Texture_Shirt");
1072                 p->loc_Texture_Lightmap    = qglGetUniformLocationARB(p->program, "Texture_Lightmap");
1073                 p->loc_Texture_Deluxemap   = qglGetUniformLocationARB(p->program, "Texture_Deluxemap");
1074                 p->loc_Texture_Glow        = qglGetUniformLocationARB(p->program, "Texture_Glow");
1075                 p->loc_Texture_Refraction  = qglGetUniformLocationARB(p->program, "Texture_Refraction");
1076                 p->loc_Texture_Reflection  = qglGetUniformLocationARB(p->program, "Texture_Reflection");
1077                 p->loc_FogColor            = qglGetUniformLocationARB(p->program, "FogColor");
1078                 p->loc_LightPosition       = qglGetUniformLocationARB(p->program, "LightPosition");
1079                 p->loc_EyePosition         = qglGetUniformLocationARB(p->program, "EyePosition");
1080                 p->loc_LightColor          = qglGetUniformLocationARB(p->program, "LightColor");
1081                 p->loc_Color_Pants         = qglGetUniformLocationARB(p->program, "Color_Pants");
1082                 p->loc_Color_Shirt         = qglGetUniformLocationARB(p->program, "Color_Shirt");
1083                 p->loc_FogRangeRecip       = qglGetUniformLocationARB(p->program, "FogRangeRecip");
1084                 p->loc_AmbientScale        = qglGetUniformLocationARB(p->program, "AmbientScale");
1085                 p->loc_DiffuseScale        = qglGetUniformLocationARB(p->program, "DiffuseScale");
1086                 p->loc_SpecularPower       = qglGetUniformLocationARB(p->program, "SpecularPower");
1087                 p->loc_SpecularScale       = qglGetUniformLocationARB(p->program, "SpecularScale");
1088                 p->loc_GlowScale           = qglGetUniformLocationARB(p->program, "GlowScale");
1089                 p->loc_SceneBrightness     = qglGetUniformLocationARB(p->program, "SceneBrightness");
1090                 p->loc_OffsetMapping_Scale = qglGetUniformLocationARB(p->program, "OffsetMapping_Scale");
1091                 p->loc_AmbientColor        = qglGetUniformLocationARB(p->program, "AmbientColor");
1092                 p->loc_DiffuseColor        = qglGetUniformLocationARB(p->program, "DiffuseColor");
1093                 p->loc_SpecularColor       = qglGetUniformLocationARB(p->program, "SpecularColor");
1094                 p->loc_LightDir            = qglGetUniformLocationARB(p->program, "LightDir");
1095                 p->loc_ContrastBoostCoeff  = qglGetUniformLocationARB(p->program, "ContrastBoostCoeff");
1096                 p->loc_DistortScaleRefractReflect = qglGetUniformLocationARB(p->program, "DistortScaleRefractReflect");
1097                 p->loc_ScreenScaleRefractReflect = qglGetUniformLocationARB(p->program, "ScreenScaleRefractReflect");
1098                 p->loc_ScreenCenterRefractReflect = qglGetUniformLocationARB(p->program, "ScreenCenterRefractReflect");
1099                 p->loc_RefractColor        = qglGetUniformLocationARB(p->program, "RefractColor");
1100                 p->loc_ReflectColor        = qglGetUniformLocationARB(p->program, "ReflectColor");
1101                 p->loc_ReflectFactor       = qglGetUniformLocationARB(p->program, "ReflectFactor");
1102                 p->loc_ReflectOffset       = qglGetUniformLocationARB(p->program, "ReflectOffset");
1103                 // initialize the samplers to refer to the texture units we use
1104                 if (p->loc_Texture_Normal >= 0)    qglUniform1iARB(p->loc_Texture_Normal, 0);
1105                 if (p->loc_Texture_Color >= 0)     qglUniform1iARB(p->loc_Texture_Color, 1);
1106                 if (p->loc_Texture_Gloss >= 0)     qglUniform1iARB(p->loc_Texture_Gloss, 2);
1107                 if (p->loc_Texture_Cube >= 0)      qglUniform1iARB(p->loc_Texture_Cube, 3);
1108                 if (p->loc_Texture_FogMask >= 0)   qglUniform1iARB(p->loc_Texture_FogMask, 4);
1109                 if (p->loc_Texture_Pants >= 0)     qglUniform1iARB(p->loc_Texture_Pants, 5);
1110                 if (p->loc_Texture_Shirt >= 0)     qglUniform1iARB(p->loc_Texture_Shirt, 6);
1111                 if (p->loc_Texture_Lightmap >= 0)  qglUniform1iARB(p->loc_Texture_Lightmap, 7);
1112                 if (p->loc_Texture_Deluxemap >= 0) qglUniform1iARB(p->loc_Texture_Deluxemap, 8);
1113                 if (p->loc_Texture_Glow >= 0)      qglUniform1iARB(p->loc_Texture_Glow, 9);
1114                 if (p->loc_Texture_Attenuation >= 0) qglUniform1iARB(p->loc_Texture_Attenuation, 10);
1115                 if (p->loc_Texture_Refraction >= 0) qglUniform1iARB(p->loc_Texture_Refraction, 11);
1116                 if (p->loc_Texture_Reflection >= 0) qglUniform1iARB(p->loc_Texture_Reflection, 12);
1117                 CHECKGLERROR
1118                 qglUseProgramObjectARB(0);CHECKGLERROR
1119                 if (developer.integer)
1120                         Con_Printf("GLSL shader %s :%s compiled.\n", filename, permutationname);
1121         }
1122         else
1123         {
1124                 if (developer.integer)
1125                         Con_Printf("GLSL shader %s :%s failed!  source code line offset for above errors is %i.\n", permutationname, filename, -(vertstrings_count - 1));
1126                 else
1127                         Con_Printf("GLSL shader %s :%s failed!  some features may not work properly.\n", permutationname, filename);
1128         }
1129         if (shaderstring)
1130                 Mem_Free(shaderstring);
1131 }
1132
1133 void R_GLSL_Restart_f(void)
1134 {
1135         int i;
1136         for (i = 0;i < SHADERPERMUTATION_INDICES;i++)
1137                 if (r_glsl_permutations[i].program)
1138                         GL_Backend_FreeProgram(r_glsl_permutations[i].program);
1139         memset(r_glsl_permutations, 0, sizeof(r_glsl_permutations));
1140 }
1141
1142 void R_GLSL_DumpShader_f(void)
1143 {
1144         int i;
1145
1146         qfile_t *file = FS_Open("glsl/default.glsl", "w", false, false);
1147         if(!file)
1148         {
1149                 Con_Printf("failed to write to glsl/default.glsl\n");
1150                 return;
1151         }
1152
1153         FS_Print(file, "// The engine may define the following macros:\n");
1154         FS_Print(file, "// #define VERTEX_SHADER\n// #define GEOMETRY_SHADER\n// #define FRAGMENT_SHADER\n");
1155         for (i = 0;shadermodeinfo[i][0];i++)
1156                 FS_Printf(file, "// %s", shadermodeinfo[i][0]);
1157         for (i = 0;shaderpermutationinfo[i][0];i++)
1158                 FS_Printf(file, "// %s", shaderpermutationinfo[i][0]);
1159         FS_Print(file, "\n");
1160         FS_Print(file, builtinshaderstring);
1161         FS_Close(file);
1162
1163         Con_Printf("glsl/default.glsl written\n");
1164 }
1165
1166 extern rtexture_t *r_shadow_attenuationgradienttexture;
1167 extern rtexture_t *r_shadow_attenuation2dtexture;
1168 extern rtexture_t *r_shadow_attenuation3dtexture;
1169 int R_SetupSurfaceShader(const vec3_t lightcolorbase, qboolean modellighting, float ambientscale, float diffusescale, float specularscale, rsurfacepass_t rsurfacepass)
1170 {
1171         // select a permutation of the lighting shader appropriate to this
1172         // combination of texture, entity, light source, and fogging, only use the
1173         // minimum features necessary to avoid wasting rendering time in the
1174         // fragment shader on features that are not being used
1175         const char *shaderfilename = NULL;
1176         unsigned int permutation = 0;
1177         unsigned int shadertype = 0;
1178         shadermode_t mode = 0;
1179         r_glsl_permutation = NULL;
1180         shaderfilename = "glsl/default.glsl";
1181         shadertype = SHADERTYPE_USES_VERTEXSHADER | SHADERTYPE_USES_FRAGMENTSHADER;
1182         // TODO: implement geometry-shader based shadow volumes someday
1183         if (r_glsl_offsetmapping.integer)
1184         {
1185                 permutation |= SHADERPERMUTATION_OFFSETMAPPING;
1186                 if (r_glsl_offsetmapping_reliefmapping.integer)
1187                         permutation |= SHADERPERMUTATION_OFFSETMAPPING_RELIEFMAPPING;
1188         }
1189         if (rsurfacepass == RSURFPASS_BACKGROUND)
1190         {
1191                 // distorted background
1192                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_WATERSHADER)
1193                         mode = SHADERMODE_WATER;
1194                 else
1195                         mode = SHADERMODE_REFRACTION;
1196         }
1197         else if (rsurfacepass == RSURFPASS_RTLIGHT)
1198         {
1199                 // light source
1200                 mode = SHADERMODE_LIGHTSOURCE;
1201                 if (rsurface.rtlight->currentcubemap != r_texture_whitecube)
1202                         permutation |= SHADERPERMUTATION_CUBEFILTER;
1203                 if (diffusescale > 0)
1204                         permutation |= SHADERPERMUTATION_DIFFUSE;
1205                 if (specularscale > 0)
1206                         permutation |= SHADERPERMUTATION_SPECULAR | SHADERPERMUTATION_DIFFUSE;
1207                 if (r_refdef.fogenabled)
1208                         permutation |= SHADERPERMUTATION_FOG;
1209                 if (rsurface.texture->colormapping)
1210                         permutation |= SHADERPERMUTATION_COLORMAPPING;
1211                 if(r_glsl_contrastboost.value > 1 || r_glsl_contrastboost.value < 0)
1212                         permutation |= SHADERPERMUTATION_CONTRASTBOOST;
1213                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_REFLECTION)
1214                         permutation |= SHADERPERMUTATION_REFLECTION;
1215         }
1216         else if (rsurface.texture->currentmaterialflags & MATERIALFLAG_FULLBRIGHT)
1217         {
1218                 // unshaded geometry (fullbright or ambient model lighting)
1219                 mode = SHADERMODE_LIGHTMAP;
1220                 if (rsurface.texture->currentskinframe->glow)
1221                         permutation |= SHADERPERMUTATION_GLOW;
1222                 if (r_refdef.fogenabled)
1223                         permutation |= SHADERPERMUTATION_FOG;
1224                 if (rsurface.texture->colormapping)
1225                         permutation |= SHADERPERMUTATION_COLORMAPPING;
1226                 if (r_glsl_offsetmapping.integer)
1227                 {
1228                         permutation |= SHADERPERMUTATION_OFFSETMAPPING;
1229                         if (r_glsl_offsetmapping_reliefmapping.integer)
1230                                 permutation |= SHADERPERMUTATION_OFFSETMAPPING_RELIEFMAPPING;
1231                 }
1232                 if(r_glsl_contrastboost.value > 1 || r_glsl_contrastboost.value < 0)
1233                         permutation |= SHADERPERMUTATION_CONTRASTBOOST;
1234                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_REFLECTION)
1235                         permutation |= SHADERPERMUTATION_REFLECTION;
1236         }
1237         else if (rsurface.texture->currentmaterialflags & MATERIALFLAG_MODELLIGHT_DIRECTIONAL)
1238         {
1239                 // directional model lighting
1240                 mode = SHADERMODE_LIGHTDIRECTION;
1241                 if (rsurface.texture->currentskinframe->glow)
1242                         permutation |= SHADERPERMUTATION_GLOW;
1243                 permutation |= SHADERPERMUTATION_DIFFUSE;
1244                 if (specularscale > 0)
1245                         permutation |= SHADERPERMUTATION_SPECULAR;
1246                 if (r_refdef.fogenabled)
1247                         permutation |= SHADERPERMUTATION_FOG;
1248                 if (rsurface.texture->colormapping)
1249                         permutation |= SHADERPERMUTATION_COLORMAPPING;
1250                 if(r_glsl_contrastboost.value > 1 || r_glsl_contrastboost.value < 0)
1251                         permutation |= SHADERPERMUTATION_CONTRASTBOOST;
1252                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_REFLECTION)
1253                         permutation |= SHADERPERMUTATION_REFLECTION;
1254         }
1255         else if (rsurface.texture->currentmaterialflags & MATERIALFLAG_MODELLIGHT)
1256         {
1257                 // ambient model lighting
1258                 mode = SHADERMODE_LIGHTDIRECTION;
1259                 if (rsurface.texture->currentskinframe->glow)
1260                         permutation |= SHADERPERMUTATION_GLOW;
1261                 if (r_refdef.fogenabled)
1262                         permutation |= SHADERPERMUTATION_FOG;
1263                 if (rsurface.texture->colormapping)
1264                         permutation |= SHADERPERMUTATION_COLORMAPPING;
1265                 if(r_glsl_contrastboost.value > 1 || r_glsl_contrastboost.value < 0)
1266                         permutation |= SHADERPERMUTATION_CONTRASTBOOST;
1267                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_REFLECTION)
1268                         permutation |= SHADERPERMUTATION_REFLECTION;
1269         }
1270         else
1271         {
1272                 // lightmapped wall
1273                 if (r_glsl_deluxemapping.integer >= 1 && rsurface.uselightmaptexture && r_refdef.worldmodel && r_refdef.worldmodel->brushq3.deluxemapping)
1274                 {
1275                         // deluxemapping (light direction texture)
1276                         if (rsurface.uselightmaptexture && r_refdef.worldmodel && r_refdef.worldmodel->brushq3.deluxemapping && r_refdef.worldmodel->brushq3.deluxemapping_modelspace)
1277                                 mode = SHADERMODE_LIGHTDIRECTIONMAP_MODELSPACE;
1278                         else
1279                                 mode = SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE;
1280                         if (specularscale > 0)
1281                                 permutation |= SHADERPERMUTATION_SPECULAR | SHADERPERMUTATION_DIFFUSE;
1282                 }
1283                 else if (r_glsl_deluxemapping.integer >= 2)
1284                 {
1285                         // fake deluxemapping (uniform light direction in tangentspace)
1286                         mode = SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE;
1287                         if (specularscale > 0)
1288                                 permutation |= SHADERPERMUTATION_SPECULAR | SHADERPERMUTATION_DIFFUSE;
1289                 }
1290                 else
1291                 {
1292                         // ordinary lightmapping
1293                         mode = SHADERMODE_LIGHTMAP;
1294                 }
1295                 if (rsurface.texture->currentskinframe->glow)
1296                         permutation |= SHADERPERMUTATION_GLOW;
1297                 if (r_refdef.fogenabled)
1298                         permutation |= SHADERPERMUTATION_FOG;
1299                 if (rsurface.texture->colormapping)
1300                         permutation |= SHADERPERMUTATION_COLORMAPPING;
1301                 if(r_glsl_contrastboost.value > 1 || r_glsl_contrastboost.value < 0)
1302                         permutation |= SHADERPERMUTATION_CONTRASTBOOST;
1303                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_REFLECTION)
1304                         permutation |= SHADERPERMUTATION_REFLECTION;
1305         }
1306         permutation |= mode * SHADERPERMUTATION_MODEBASE;
1307         if (!r_glsl_permutations[permutation].program)
1308         {
1309                 if (!r_glsl_permutations[permutation].compiled)
1310                         R_GLSL_CompilePermutation(shaderfilename, permutation, shadertype);
1311                 if (!r_glsl_permutations[permutation].program)
1312                 {
1313                         // remove features until we find a valid permutation
1314                         unsigned int i;
1315                         for (i = (SHADERPERMUTATION_MODEBASE >> 1);;i>>=1)
1316                         {
1317                                 if (!i)
1318                                 {
1319                                         Con_Printf("OpenGL 2.0 shaders disabled - unable to find a working shader permutation fallback on this driver (set r_glsl 1 if you want to try again)\n");
1320                                         Cvar_SetValueQuick(&r_glsl, 0);
1321                                         return 0; // no bit left to clear
1322                                 }
1323                                 // reduce i more quickly whenever it would not remove any bits
1324                                 if (!(permutation & i))
1325                                         continue;
1326                                 permutation &= ~i;
1327                                 if (!r_glsl_permutations[permutation].compiled)
1328                                         R_GLSL_CompilePermutation(shaderfilename, permutation, shadertype);
1329                                 if (r_glsl_permutations[permutation].program)
1330                                         break;
1331                         }
1332                 }
1333         }
1334         r_glsl_permutation = r_glsl_permutations + permutation;
1335         CHECKGLERROR
1336         qglUseProgramObjectARB(r_glsl_permutation->program);CHECKGLERROR
1337         if (mode == SHADERMODE_LIGHTSOURCE)
1338         {
1339                 if (r_glsl_permutation->loc_LightPosition >= 0) qglUniform3fARB(r_glsl_permutation->loc_LightPosition, rsurface.entitylightorigin[0], rsurface.entitylightorigin[1], rsurface.entitylightorigin[2]);
1340                 if (permutation & SHADERPERMUTATION_DIFFUSE)
1341                 {
1342                         if (r_glsl_permutation->loc_LightColor >= 0) qglUniform3fARB(r_glsl_permutation->loc_LightColor, lightcolorbase[0], lightcolorbase[1], lightcolorbase[2]);
1343                         if (r_glsl_permutation->loc_AmbientScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_AmbientScale, ambientscale);
1344                         if (r_glsl_permutation->loc_DiffuseScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_DiffuseScale, diffusescale);
1345                         if (r_glsl_permutation->loc_SpecularScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_SpecularScale, specularscale);
1346                 }
1347                 else
1348                 {
1349                         // ambient only is simpler
1350                         if (r_glsl_permutation->loc_LightColor >= 0) qglUniform3fARB(r_glsl_permutation->loc_LightColor, lightcolorbase[0] * ambientscale, lightcolorbase[1] * ambientscale, lightcolorbase[2] * ambientscale);
1351                         if (r_glsl_permutation->loc_AmbientScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_AmbientScale, 1);
1352                         if (r_glsl_permutation->loc_DiffuseScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_DiffuseScale, 0);
1353                         if (r_glsl_permutation->loc_SpecularScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_SpecularScale, 0);
1354                 }
1355         }
1356         else if (mode == SHADERMODE_LIGHTDIRECTION)
1357         {
1358                 if (r_glsl_permutation->loc_AmbientColor >= 0)
1359                         qglUniform3fARB(r_glsl_permutation->loc_AmbientColor, rsurface.modellight_ambient[0] * ambientscale, rsurface.modellight_ambient[1] * ambientscale, rsurface.modellight_ambient[2] * ambientscale);
1360                 if (r_glsl_permutation->loc_DiffuseColor >= 0)
1361                         qglUniform3fARB(r_glsl_permutation->loc_DiffuseColor, rsurface.modellight_diffuse[0] * diffusescale, rsurface.modellight_diffuse[1] * diffusescale, rsurface.modellight_diffuse[2] * diffusescale);
1362                 if (r_glsl_permutation->loc_SpecularColor >= 0)
1363                         qglUniform3fARB(r_glsl_permutation->loc_SpecularColor, rsurface.modellight_diffuse[0] * specularscale, rsurface.modellight_diffuse[1] * specularscale, rsurface.modellight_diffuse[2] * specularscale);
1364                 if (r_glsl_permutation->loc_LightDir >= 0)
1365                         qglUniform3fARB(r_glsl_permutation->loc_LightDir, rsurface.modellight_lightdir[0], rsurface.modellight_lightdir[1], rsurface.modellight_lightdir[2]);
1366         }
1367         else
1368         {
1369                 if (r_glsl_permutation->loc_AmbientScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_AmbientScale, r_ambient.value * 2.0f / 128.0f);
1370                 if (r_glsl_permutation->loc_DiffuseScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_DiffuseScale, r_refdef.lightmapintensity * 2.0f);
1371                 if (r_glsl_permutation->loc_SpecularScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_SpecularScale, r_refdef.lightmapintensity * specularscale * 2.0f);
1372         }
1373         if (r_glsl_permutation->loc_GlowScale >= 0) qglUniform1fARB(r_glsl_permutation->loc_GlowScale, r_hdr_glowintensity.value);
1374         if (r_glsl_permutation->loc_ContrastBoostCoeff >= 0)
1375         {
1376                 // The formula used is actually:
1377                 //   color.rgb *= SceneBrightness;
1378                 //   color.rgb *= ContrastBoost / ((ContrastBoost - 1) * color.rgb + 1);
1379                 // I simplify that to
1380                 //   color.rgb *= [[SceneBrightness * ContrastBoost]];
1381                 //   color.rgb /= [[(ContrastBoost - 1) / ContrastBoost]] * color.rgb + 1;
1382                 // and Black:
1383                 //   color.rgb = [[SceneBrightness * ContrastBoost]] * color.rgb / ([[(ContrastBoost - 1) * SceneBrightness]] * color.rgb + 1);
1384                 // and do [[calculations]] here in the engine
1385                 qglUniform1fARB(r_glsl_permutation->loc_ContrastBoostCoeff, (r_glsl_contrastboost.value - 1) * r_view.colorscale);
1386                 if (r_glsl_permutation->loc_SceneBrightness >= 0) qglUniform1fARB(r_glsl_permutation->loc_SceneBrightness, r_view.colorscale * r_glsl_contrastboost.value);
1387         }
1388         else
1389                 if (r_glsl_permutation->loc_SceneBrightness >= 0) qglUniform1fARB(r_glsl_permutation->loc_SceneBrightness, r_view.colorscale);
1390         if (r_glsl_permutation->loc_FogColor >= 0)
1391         {
1392                 // additive passes are only darkened by fog, not tinted
1393                 if (rsurface.rtlight || (rsurface.texture->currentmaterialflags & MATERIALFLAG_ADD))
1394                         qglUniform3fARB(r_glsl_permutation->loc_FogColor, 0, 0, 0);
1395                 else
1396                 /*
1397                 {
1398                         vec3_t fogvec;
1399                         //   color.rgb *= SceneBrightness;
1400                         VectorScale(r_refdef.fogcolor, r_view.colorscale, fogvec);
1401                         if(r_glsl_permutation->loc_ContrastBoostCoeff >= 0) // need to support contrast boost
1402                         {
1403                                 //   color.rgb *= ContrastBoost / ((ContrastBoost - 1) * color.rgb + 1);
1404                                 fogvec[0] *= r_glsl_contrastboost.value / ((r_glsl_contrastboost.value - 1) * fogvec[0] + 1);
1405                                 fogvec[1] *= r_glsl_contrastboost.value / ((r_glsl_contrastboost.value - 1) * fogvec[1] + 1);
1406                                 fogvec[2] *= r_glsl_contrastboost.value / ((r_glsl_contrastboost.value - 1) * fogvec[2] + 1);
1407                         }
1408                         qglUniform3fARB(r_glsl_permutation->loc_FogColor, fogvec[0], fogvec[1], fogvec[2]);
1409                 }
1410                 */
1411                         qglUniform3fARB(r_glsl_permutation->loc_FogColor, r_refdef.fogcolor[0], r_refdef.fogcolor[1], r_refdef.fogcolor[2]);
1412         }
1413         if (r_glsl_permutation->loc_EyePosition >= 0) qglUniform3fARB(r_glsl_permutation->loc_EyePosition, rsurface.modelorg[0], rsurface.modelorg[1], rsurface.modelorg[2]);
1414         if (r_glsl_permutation->loc_Color_Pants >= 0)
1415         {
1416                 if (rsurface.texture->currentskinframe->pants)
1417                         qglUniform3fARB(r_glsl_permutation->loc_Color_Pants, rsurface.colormap_pantscolor[0], rsurface.colormap_pantscolor[1], rsurface.colormap_pantscolor[2]);
1418                 else
1419                         qglUniform3fARB(r_glsl_permutation->loc_Color_Pants, 0, 0, 0);
1420         }
1421         if (r_glsl_permutation->loc_Color_Shirt >= 0)
1422         {
1423                 if (rsurface.texture->currentskinframe->shirt)
1424                         qglUniform3fARB(r_glsl_permutation->loc_Color_Shirt, rsurface.colormap_shirtcolor[0], rsurface.colormap_shirtcolor[1], rsurface.colormap_shirtcolor[2]);
1425                 else
1426                         qglUniform3fARB(r_glsl_permutation->loc_Color_Shirt, 0, 0, 0);
1427         }
1428         if (r_glsl_permutation->loc_FogRangeRecip >= 0) qglUniform1fARB(r_glsl_permutation->loc_FogRangeRecip, r_refdef.fograngerecip);
1429         if (r_glsl_permutation->loc_SpecularPower >= 0) qglUniform1fARB(r_glsl_permutation->loc_SpecularPower, rsurface.texture->specularpower);
1430         if (r_glsl_permutation->loc_OffsetMapping_Scale >= 0) qglUniform1fARB(r_glsl_permutation->loc_OffsetMapping_Scale, r_glsl_offsetmapping_scale.value);
1431         if (r_glsl_permutation->loc_DistortScaleRefractReflect >= 0) qglUniform4fARB(r_glsl_permutation->loc_DistortScaleRefractReflect, r_water_refractdistort.value * rsurface.texture->refractfactor, r_water_refractdistort.value * rsurface.texture->refractfactor, r_water_reflectdistort.value * rsurface.texture->reflectfactor, r_water_reflectdistort.value * rsurface.texture->reflectfactor);
1432         if (r_glsl_permutation->loc_ScreenScaleRefractReflect >= 0) qglUniform4fARB(r_glsl_permutation->loc_ScreenScaleRefractReflect, r_waterstate.screenscale[0], r_waterstate.screenscale[1], r_waterstate.screenscale[0], r_waterstate.screenscale[1]);
1433         if (r_glsl_permutation->loc_ScreenCenterRefractReflect >= 0) qglUniform4fARB(r_glsl_permutation->loc_ScreenCenterRefractReflect, r_waterstate.screencenter[0], r_waterstate.screencenter[1], r_waterstate.screencenter[0], r_waterstate.screencenter[1]);
1434         if (r_glsl_permutation->loc_RefractColor >= 0) qglUniform4fvARB(r_glsl_permutation->loc_RefractColor, 1, rsurface.texture->refractcolor4f);
1435         if (r_glsl_permutation->loc_ReflectColor >= 0) qglUniform4fvARB(r_glsl_permutation->loc_ReflectColor, 1, rsurface.texture->reflectcolor4f);
1436         if (r_glsl_permutation->loc_ReflectFactor >= 0) qglUniform1fARB(r_glsl_permutation->loc_ReflectFactor, rsurface.texture->reflectmax - rsurface.texture->reflectmin);
1437         if (r_glsl_permutation->loc_ReflectOffset >= 0) qglUniform1fARB(r_glsl_permutation->loc_ReflectOffset, rsurface.texture->reflectmin);
1438         CHECKGLERROR
1439         return permutation;
1440 }
1441
1442 #define SKINFRAME_HASH 1024
1443
1444 struct
1445 {
1446         int loadsequence; // incremented each level change
1447         memexpandablearray_t array;
1448         skinframe_t *hash[SKINFRAME_HASH];
1449 }
1450 r_skinframe;
1451
1452 void R_SkinFrame_PrepareForPurge(void)
1453 {
1454         r_skinframe.loadsequence++;
1455         // wrap it without hitting zero
1456         if (r_skinframe.loadsequence >= 200)
1457                 r_skinframe.loadsequence = 1;
1458 }
1459
1460 void R_SkinFrame_MarkUsed(skinframe_t *skinframe)
1461 {
1462         if (!skinframe)
1463                 return;
1464         // mark the skinframe as used for the purging code
1465         skinframe->loadsequence = r_skinframe.loadsequence;
1466 }
1467
1468 void R_SkinFrame_Purge(void)
1469 {
1470         int i;
1471         skinframe_t *s;
1472         for (i = 0;i < SKINFRAME_HASH;i++)
1473         {
1474                 for (s = r_skinframe.hash[i];s;s = s->next)
1475                 {
1476                         if (s->loadsequence && s->loadsequence != r_skinframe.loadsequence)
1477                         {
1478                                 if (s->merged == s->base)
1479                                         s->merged = NULL;
1480                                 // FIXME: maybe pass a pointer to the pointer to R_PurgeTexture and reset it to NULL inside? [11/29/2007 Black]
1481                                 R_PurgeTexture(s->stain );s->stain  = NULL;
1482                                 R_PurgeTexture(s->merged);s->merged = NULL;
1483                                 R_PurgeTexture(s->base  );s->base   = NULL;
1484                                 R_PurgeTexture(s->pants );s->pants  = NULL;
1485                                 R_PurgeTexture(s->shirt );s->shirt  = NULL;
1486                                 R_PurgeTexture(s->nmap  );s->nmap   = NULL;
1487                                 R_PurgeTexture(s->gloss );s->gloss  = NULL;
1488                                 R_PurgeTexture(s->glow  );s->glow   = NULL;
1489                                 R_PurgeTexture(s->fog   );s->fog    = NULL;
1490                                 s->loadsequence = 0;
1491                         }
1492                 }
1493         }
1494 }
1495
1496 skinframe_t *R_SkinFrame_FindNextByName( skinframe_t *last, const char *name ) {
1497         skinframe_t *item;
1498         char basename[MAX_QPATH];
1499
1500         Image_StripImageExtension(name, basename, sizeof(basename));
1501
1502         if( last == NULL ) {
1503                 int hashindex;
1504                 hashindex = CRC_Block((unsigned char *)basename, strlen(basename)) & (SKINFRAME_HASH - 1);
1505                 item = r_skinframe.hash[hashindex];
1506         } else {
1507                 item = last->next;
1508         }
1509
1510         // linearly search through the hash bucket
1511         for( ; item ; item = item->next ) {
1512                 if( !strcmp( item->basename, basename ) ) {
1513                         return item;
1514                 }
1515         }
1516         return NULL;
1517 }
1518
1519 skinframe_t *R_SkinFrame_Find(const char *name, int textureflags, int comparewidth, int compareheight, int comparecrc, qboolean add)
1520 {
1521         skinframe_t *item;
1522         int hashindex;
1523         char basename[MAX_QPATH];
1524         
1525         Image_StripImageExtension(name, basename, sizeof(basename));
1526
1527         hashindex = CRC_Block((unsigned char *)basename, strlen(basename)) & (SKINFRAME_HASH - 1);
1528         for (item = r_skinframe.hash[hashindex];item;item = item->next)
1529                 if (!strcmp(item->basename, basename) && item->textureflags == textureflags && item->comparewidth == comparewidth && item->compareheight == compareheight && item->comparecrc == comparecrc)
1530                         break;
1531
1532         if (!item) {
1533                 rtexture_t *dyntexture;
1534                 // check whether its a dynamic texture
1535                 dyntexture = CL_GetDynTexture( basename );
1536                 if (!add && !dyntexture)
1537                         return NULL;
1538                 item = (skinframe_t *)Mem_ExpandableArray_AllocRecord(&r_skinframe.array);
1539                 memset(item, 0, sizeof(*item));
1540                 strlcpy(item->basename, basename, sizeof(item->basename));
1541                 item->base = dyntexture; // either NULL or dyntexture handle
1542                 item->textureflags = textureflags;
1543                 item->comparewidth = comparewidth;
1544                 item->compareheight = compareheight;
1545                 item->comparecrc = comparecrc;
1546                 item->next = r_skinframe.hash[hashindex];       
1547                 r_skinframe.hash[hashindex] = item;
1548         }
1549         else if( item->base == NULL )
1550         {
1551                 rtexture_t *dyntexture;
1552                 // check whether its a dynamic texture
1553                 // this only needs to be done because Purge doesnt delete skinframes - only sets the texture pointers to NULL and we need to restore it before returing.. [11/29/2007 Black]
1554                 dyntexture = CL_GetDynTexture( basename );
1555                 item->base = dyntexture; // either NULL or dyntexture handle
1556         }
1557
1558         R_SkinFrame_MarkUsed(item);
1559         return item;
1560 }
1561
1562 skinframe_t *R_SkinFrame_LoadExternal(const char *name, int textureflags, qboolean complain)
1563 {
1564         // FIXME: it should be possible to disable loading various layers using
1565         // cvars, to prevent wasted loading time and memory usage if the user does
1566         // not want them
1567         qboolean loadnormalmap = true;
1568         qboolean loadgloss = true;
1569         qboolean loadpantsandshirt = true;
1570         qboolean loadglow = true;
1571         int j;
1572         unsigned char *pixels;
1573         unsigned char *bumppixels;
1574         unsigned char *basepixels = NULL;
1575         int basepixels_width;
1576         int basepixels_height;
1577         skinframe_t *skinframe;
1578
1579         if (cls.state == ca_dedicated)
1580                 return NULL;
1581
1582         // return an existing skinframe if already loaded
1583         // if loading of the first image fails, don't make a new skinframe as it
1584         // would cause all future lookups of this to be missing
1585         skinframe = R_SkinFrame_Find(name, textureflags, 0, 0, 0, false);
1586         if (skinframe && skinframe->base)
1587                 return skinframe;
1588
1589         basepixels = loadimagepixelsbgra(name, complain, true);
1590         if (basepixels == NULL)
1591                 return NULL;
1592
1593         // we've got some pixels to store, so really allocate this new texture now
1594         if (!skinframe)
1595                 skinframe = R_SkinFrame_Find(name, textureflags, 0, 0, 0, true);
1596         skinframe->stain = NULL;
1597         skinframe->merged = NULL;
1598         skinframe->base = r_texture_notexture;
1599         skinframe->pants = NULL;
1600         skinframe->shirt = NULL;
1601         skinframe->nmap = r_texture_blanknormalmap;
1602         skinframe->gloss = NULL;
1603         skinframe->glow = NULL;
1604         skinframe->fog = NULL;
1605
1606         basepixels_width = image_width;
1607         basepixels_height = image_height;
1608         skinframe->base = R_LoadTexture2D (r_main_texturepool, skinframe->basename, basepixels_width, basepixels_height, basepixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_color.integer ? ~0 : ~TEXF_COMPRESS), NULL);
1609
1610         if (textureflags & TEXF_ALPHA)
1611         {
1612                 for (j = 3;j < basepixels_width * basepixels_height * 4;j += 4)
1613                         if (basepixels[j] < 255)
1614                                 break;
1615                 if (j < basepixels_width * basepixels_height * 4)
1616                 {
1617                         // has transparent pixels
1618                         pixels = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height * 4);
1619                         for (j = 0;j < image_width * image_height * 4;j += 4)
1620                         {
1621                                 pixels[j+0] = 255;
1622                                 pixels[j+1] = 255;
1623                                 pixels[j+2] = 255;
1624                                 pixels[j+3] = basepixels[j+3];
1625                         }
1626                         skinframe->fog = R_LoadTexture2D (r_main_texturepool, va("%s_mask", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_color.integer ? ~0 : ~TEXF_COMPRESS), NULL);
1627                         Mem_Free(pixels);
1628                 }
1629         }
1630
1631         // _norm is the name used by tenebrae and has been adopted as standard
1632         if (loadnormalmap)
1633         {
1634                 if ((pixels = loadimagepixelsbgra(va("%s_norm", skinframe->basename), false, false)) != NULL)
1635                 {
1636                         skinframe->nmap = R_LoadTexture2D (r_main_texturepool, va("%s_nmap", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_normal.integer ? ~0 : ~TEXF_COMPRESS), NULL);
1637                         Mem_Free(pixels);
1638                         pixels = NULL;
1639                 }
1640                 else if (r_shadow_bumpscale_bumpmap.value > 0 && (bumppixels = loadimagepixelsbgra(va("%s_bump", skinframe->basename), false, false)) != NULL)
1641                 {
1642                         pixels = (unsigned char *)Mem_Alloc(tempmempool, image_width * image_height * 4);
1643                         Image_HeightmapToNormalmap_BGRA(bumppixels, pixels, image_width, image_height, false, r_shadow_bumpscale_bumpmap.value);
1644                         skinframe->nmap = R_LoadTexture2D (r_main_texturepool, va("%s_nmap", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_normal.integer ? ~0 : ~TEXF_COMPRESS), NULL);
1645                         Mem_Free(pixels);
1646                         Mem_Free(bumppixels);
1647                 }
1648                 else if (r_shadow_bumpscale_basetexture.value > 0)
1649                 {
1650                         pixels = (unsigned char *)Mem_Alloc(tempmempool, basepixels_width * basepixels_height * 4);
1651                         Image_HeightmapToNormalmap_BGRA(basepixels, pixels, basepixels_width, basepixels_height, false, r_shadow_bumpscale_basetexture.value);
1652                         skinframe->nmap = R_LoadTexture2D (r_main_texturepool, va("%s_nmap", skinframe->basename), basepixels_width, basepixels_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_normal.integer ? ~0 : ~TEXF_COMPRESS), NULL);
1653                         Mem_Free(pixels);
1654                 }
1655         }
1656         // _luma is supported for tenebrae compatibility
1657         // (I think it's a very stupid name, but oh well)
1658         // _glow is the preferred name
1659         if (loadglow          && ((pixels = loadimagepixelsbgra(va("%s_glow", skinframe->basename), false, false)) != NULL || (pixels = loadimagepixelsbgra(va("%s_luma", skinframe->basename), false, false)) != NULL)) {skinframe->glow = R_LoadTexture2D (r_main_texturepool, va("%s_glow", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_glow.integer ? ~0 : ~TEXF_COMPRESS), NULL);Mem_Free(pixels);pixels = NULL;}
1660         if (loadgloss         && (pixels = loadimagepixelsbgra(va("%s_gloss", skinframe->basename), false, false)) != NULL) {skinframe->gloss = R_LoadTexture2D (r_main_texturepool, va("%s_gloss", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_gloss.integer ? ~0 : ~TEXF_COMPRESS), NULL);Mem_Free(pixels);pixels = NULL;}
1661         if (loadpantsandshirt && (pixels = loadimagepixelsbgra(va("%s_pants", skinframe->basename), false, false)) != NULL) {skinframe->pants = R_LoadTexture2D (r_main_texturepool, va("%s_pants", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_color.integer ? ~0 : ~TEXF_COMPRESS), NULL);Mem_Free(pixels);pixels = NULL;}
1662         if (loadpantsandshirt && (pixels = loadimagepixelsbgra(va("%s_shirt", skinframe->basename), false, false)) != NULL) {skinframe->shirt = R_LoadTexture2D (r_main_texturepool, va("%s_shirt", skinframe->basename), image_width, image_height, pixels, TEXTYPE_BGRA, skinframe->textureflags & (gl_texturecompression_color.integer ? ~0 : ~TEXF_COMPRESS), NULL);Mem_Free(pixels);pixels = NULL;}
1663
1664         if (basepixels)
1665                 Mem_Free(basepixels);
1666
1667         return skinframe;
1668 }
1669
1670 static rtexture_t *R_SkinFrame_TextureForSkinLayer(const unsigned char *in, int width, int height, const char *name, const unsigned int *palette, int textureflags, qboolean force)
1671 {
1672         int i;
1673         if (!force)
1674         {
1675                 for (i = 0;i < width*height;i++)
1676                         if (((unsigned char *)&palette[in[i]])[3] > 0)
1677                                 break;
1678                 if (i == width*height)
1679                         return NULL;
1680         }
1681         return R_LoadTexture2D (r_main_texturepool, name, width, height, in, TEXTYPE_PALETTE, textureflags, palette);
1682 }
1683
1684 // this is only used by .spr32 sprites, HL .spr files, HL .bsp files
1685 skinframe_t *R_SkinFrame_LoadInternalBGRA(const char *name, int textureflags, const unsigned char *skindata, int width, int height)
1686 {
1687         int i;
1688         unsigned char *temp1, *temp2;
1689         skinframe_t *skinframe;
1690
1691         if (cls.state == ca_dedicated)
1692                 return NULL;
1693
1694         // if already loaded just return it, otherwise make a new skinframe
1695         skinframe = R_SkinFrame_Find(name, textureflags, width, height, skindata ? CRC_Block(skindata, width*height*4) : 0, true);
1696         if (skinframe && skinframe->base)
1697                 return skinframe;
1698
1699         skinframe->stain = NULL;
1700         skinframe->merged = NULL;
1701         skinframe->base = r_texture_notexture;
1702         skinframe->pants = NULL;
1703         skinframe->shirt = NULL;
1704         skinframe->nmap = r_texture_blanknormalmap;
1705         skinframe->gloss = NULL;
1706         skinframe->glow = NULL;
1707         skinframe->fog = NULL;
1708
1709         // if no data was provided, then clearly the caller wanted to get a blank skinframe
1710         if (!skindata)
1711                 return NULL;
1712
1713         if (r_shadow_bumpscale_basetexture.value > 0)
1714         {
1715                 temp1 = (unsigned char *)Mem_Alloc(tempmempool, width * height * 8);
1716                 temp2 = temp1 + width * height * 4;
1717                 Image_HeightmapToNormalmap_BGRA(skindata, temp2, width, height, false, r_shadow_bumpscale_basetexture.value);
1718                 skinframe->nmap = R_LoadTexture2D(r_main_texturepool, va("%s_nmap", skinframe->basename), width, height, temp2, TEXTYPE_BGRA, skinframe->textureflags | TEXF_ALPHA, NULL);
1719                 Mem_Free(temp1);
1720         }
1721         skinframe->base = skinframe->merged = R_LoadTexture2D(r_main_texturepool, skinframe->basename, width, height, skindata, TEXTYPE_BGRA, skinframe->textureflags, NULL);
1722         if (textureflags & TEXF_ALPHA)
1723         {
1724                 for (i = 3;i < width * height * 4;i += 4)
1725                         if (skindata[i] < 255)
1726                                 break;
1727                 if (i < width * height * 4)
1728                 {
1729                         unsigned char *fogpixels = (unsigned char *)Mem_Alloc(tempmempool, width * height * 4);
1730                         memcpy(fogpixels, skindata, width * height * 4);
1731                         for (i = 0;i < width * height * 4;i += 4)
1732                                 fogpixels[i] = fogpixels[i+1] = fogpixels[i+2] = 255;
1733                         skinframe->fog = R_LoadTexture2D(r_main_texturepool, va("%s_fog", skinframe->basename), width, height, fogpixels, TEXTYPE_BGRA, skinframe->textureflags, NULL);
1734                         Mem_Free(fogpixels);
1735                 }
1736         }
1737
1738         return skinframe;
1739 }
1740
1741 skinframe_t *R_SkinFrame_LoadInternalQuake(const char *name, int textureflags, int loadpantsandshirt, int loadglowtexture, const unsigned char *skindata, int width, int height)
1742 {
1743         int i;
1744         unsigned char *temp1, *temp2;
1745         skinframe_t *skinframe;
1746
1747         if (cls.state == ca_dedicated)
1748                 return NULL;
1749
1750         // if already loaded just return it, otherwise make a new skinframe
1751         skinframe = R_SkinFrame_Find(name, textureflags, width, height, skindata ? CRC_Block(skindata, width*height) : 0, true);
1752         if (skinframe && skinframe->base)
1753                 return skinframe;
1754
1755         skinframe->stain = NULL;
1756         skinframe->merged = NULL;
1757         skinframe->base = r_texture_notexture;
1758         skinframe->pants = NULL;
1759         skinframe->shirt = NULL;
1760         skinframe->nmap = r_texture_blanknormalmap;
1761         skinframe->gloss = NULL;
1762         skinframe->glow = NULL;
1763         skinframe->fog = NULL;
1764
1765         // if no data was provided, then clearly the caller wanted to get a blank skinframe
1766         if (!skindata)
1767                 return NULL;
1768
1769         if (r_shadow_bumpscale_basetexture.value > 0)
1770         {
1771                 temp1 = (unsigned char *)Mem_Alloc(tempmempool, width * height * 8);
1772                 temp2 = temp1 + width * height * 4;
1773                 // use either a custom palette or the quake palette
1774                 Image_Copy8bitBGRA(skindata, temp1, width * height, palette_bgra_complete);
1775                 Image_HeightmapToNormalmap_BGRA(temp1, temp2, width, height, false, r_shadow_bumpscale_basetexture.value);
1776                 skinframe->nmap = R_LoadTexture2D(r_main_texturepool, va("%s_nmap", skinframe->basename), width, height, temp2, TEXTYPE_BGRA, skinframe->textureflags | TEXF_ALPHA, NULL);
1777                 Mem_Free(temp1);
1778         }
1779         // use either a custom palette, or the quake palette
1780         skinframe->base = skinframe->merged = R_SkinFrame_TextureForSkinLayer(skindata, width, height, va("%s_merged", skinframe->basename), (loadglowtexture ? palette_bgra_nofullbrights : ((skinframe->textureflags & TEXF_ALPHA) ? palette_bgra_transparent : palette_bgra_complete)), skinframe->textureflags, true); // all
1781         if (loadglowtexture)
1782                 skinframe->glow = R_SkinFrame_TextureForSkinLayer(skindata, width, height, va("%s_glow", skinframe->basename), palette_bgra_onlyfullbrights, skinframe->textureflags, false); // glow
1783         if (loadpantsandshirt)
1784         {
1785                 skinframe->pants = R_SkinFrame_TextureForSkinLayer(skindata, width, height, va("%s_pants", skinframe->basename), palette_bgra_pantsaswhite, skinframe->textureflags, false); // pants
1786                 skinframe->shirt = R_SkinFrame_TextureForSkinLayer(skindata, width, height, va("%s_shirt", skinframe->basename), palette_bgra_shirtaswhite, skinframe->textureflags, false); // shirt
1787         }
1788         if (skinframe->pants || skinframe->shirt)
1789                 skinframe->base = R_SkinFrame_TextureForSkinLayer(skindata, width, height, va("%s_nospecial", skinframe->basename), loadglowtexture ? palette_bgra_nocolormapnofullbrights : palette_bgra_nocolormap, skinframe->textureflags, false); // no special colors
1790         if (textureflags & TEXF_ALPHA)
1791         {
1792                 for (i = 0;i < width * height;i++)
1793                         if (((unsigned char *)palette_bgra_alpha)[skindata[i]*4+3] < 255)
1794                                 break;
1795                 if (i < width * height)
1796                         skinframe->fog = R_SkinFrame_TextureForSkinLayer(skindata, width, height, va("%s_fog", skinframe->basename), palette_bgra_alpha, skinframe->textureflags, true); // fog mask
1797         }
1798
1799         return skinframe;
1800 }
1801
1802 skinframe_t *R_SkinFrame_LoadMissing(void)
1803 {
1804         skinframe_t *skinframe;
1805
1806         if (cls.state == ca_dedicated)
1807                 return NULL;
1808
1809         skinframe = R_SkinFrame_Find("missing", TEXF_PRECACHE, 0, 0, 0, true);
1810         skinframe->stain = NULL;
1811         skinframe->merged = NULL;
1812         skinframe->base = r_texture_notexture;
1813         skinframe->pants = NULL;
1814         skinframe->shirt = NULL;
1815         skinframe->nmap = r_texture_blanknormalmap;
1816         skinframe->gloss = NULL;
1817         skinframe->glow = NULL;
1818         skinframe->fog = NULL;
1819
1820         return skinframe;
1821 }
1822
1823 void gl_main_start(void)
1824 {
1825         int x;
1826         double r, alpha;
1827
1828         r = -16.0 / (1.0 * FOGMASKTABLEWIDTH * FOGMASKTABLEWIDTH);
1829         for (x = 0;x < FOGMASKTABLEWIDTH;x++)
1830         {
1831                 alpha = exp(r * ((double)x*(double)x));
1832                 if (x == FOGMASKTABLEWIDTH - 1)
1833                         alpha = 0;
1834                 r_refdef.fogmasktable[x] = bound(0, alpha, 1);
1835         }
1836
1837         memset(r_qwskincache, 0, sizeof(r_qwskincache));
1838         memset(r_qwskincache_skinframe, 0, sizeof(r_qwskincache_skinframe));
1839
1840         // set up r_skinframe loading system for textures
1841         memset(&r_skinframe, 0, sizeof(r_skinframe));
1842         r_skinframe.loadsequence = 1;
1843         Mem_ExpandableArray_NewArray(&r_skinframe.array, r_main_mempool, sizeof(skinframe_t), 256);
1844
1845         r_main_texturepool = R_AllocTexturePool();
1846         R_BuildBlankTextures();
1847         R_BuildNoTexture();
1848         if (gl_texturecubemap)
1849         {
1850                 R_BuildWhiteCube();
1851                 R_BuildNormalizationCube();
1852         }
1853         R_BuildFogTexture();
1854         memset(&r_bloomstate, 0, sizeof(r_bloomstate));
1855         memset(&r_waterstate, 0, sizeof(r_waterstate));
1856         memset(r_glsl_permutations, 0, sizeof(r_glsl_permutations));
1857         memset(&r_svbsp, 0, sizeof (r_svbsp));
1858 }
1859
1860 void gl_main_shutdown(void)
1861 {
1862         memset(r_qwskincache, 0, sizeof(r_qwskincache));
1863         memset(r_qwskincache_skinframe, 0, sizeof(r_qwskincache_skinframe));
1864
1865         // clear out the r_skinframe state
1866         Mem_ExpandableArray_FreeArray(&r_skinframe.array);
1867         memset(&r_skinframe, 0, sizeof(r_skinframe));
1868
1869         if (r_svbsp.nodes)
1870                 Mem_Free(r_svbsp.nodes);
1871         memset(&r_svbsp, 0, sizeof (r_svbsp));
1872         R_FreeTexturePool(&r_main_texturepool);
1873         r_texture_blanknormalmap = NULL;
1874         r_texture_white = NULL;
1875         r_texture_grey128 = NULL;
1876         r_texture_black = NULL;
1877         r_texture_whitecube = NULL;
1878         r_texture_normalizationcube = NULL;
1879         memset(&r_bloomstate, 0, sizeof(r_bloomstate));
1880         memset(&r_waterstate, 0, sizeof(r_waterstate));
1881         R_GLSL_Restart_f();
1882 }
1883
1884 extern void CL_ParseEntityLump(char *entitystring);
1885 void gl_main_newmap(void)
1886 {
1887         // FIXME: move this code to client
1888         int l;
1889         char *entities, entname[MAX_QPATH];
1890         if (cl.worldmodel)
1891         {
1892                 strlcpy(entname, cl.worldmodel->name, sizeof(entname));
1893                 l = (int)strlen(entname) - 4;
1894                 if (l >= 0 && !strcmp(entname + l, ".bsp"))
1895                 {
1896                         memcpy(entname + l, ".ent", 5);
1897                         if ((entities = (char *)FS_LoadFile(entname, tempmempool, true, NULL)))
1898                         {
1899                                 CL_ParseEntityLump(entities);
1900                                 Mem_Free(entities);
1901                                 return;
1902                         }
1903                 }
1904                 if (cl.worldmodel->brush.entities)
1905                         CL_ParseEntityLump(cl.worldmodel->brush.entities);
1906         }
1907 }
1908
1909 void GL_Main_Init(void)
1910 {
1911         r_main_mempool = Mem_AllocPool("Renderer", 0, NULL);
1912
1913         Cmd_AddCommand("r_glsl_restart", R_GLSL_Restart_f, "unloads GLSL shaders, they will then be reloaded as needed");
1914         Cmd_AddCommand("r_glsl_dumpshader", R_GLSL_DumpShader_f, "dumps the engine internal default.glsl shader into glsl/default.glsl");
1915         // FIXME: the client should set up r_refdef.fog stuff including the fogmasktable
1916         if (gamemode == GAME_NEHAHRA)
1917         {
1918                 Cvar_RegisterVariable (&gl_fogenable);
1919                 Cvar_RegisterVariable (&gl_fogdensity);
1920                 Cvar_RegisterVariable (&gl_fogred);
1921                 Cvar_RegisterVariable (&gl_foggreen);
1922                 Cvar_RegisterVariable (&gl_fogblue);
1923                 Cvar_RegisterVariable (&gl_fogstart);
1924                 Cvar_RegisterVariable (&gl_fogend);
1925         }
1926         Cvar_RegisterVariable(&r_depthfirst);
1927         Cvar_RegisterVariable(&r_nearclip);
1928         Cvar_RegisterVariable(&r_showbboxes);
1929         Cvar_RegisterVariable(&r_showsurfaces);
1930         Cvar_RegisterVariable(&r_showtris);
1931         Cvar_RegisterVariable(&r_shownormals);
1932         Cvar_RegisterVariable(&r_showlighting);
1933         Cvar_RegisterVariable(&r_showshadowvolumes);
1934         Cvar_RegisterVariable(&r_showcollisionbrushes);
1935         Cvar_RegisterVariable(&r_showcollisionbrushes_polygonfactor);
1936         Cvar_RegisterVariable(&r_showcollisionbrushes_polygonoffset);
1937         Cvar_RegisterVariable(&r_showdisabledepthtest);
1938         Cvar_RegisterVariable(&r_drawportals);
1939         Cvar_RegisterVariable(&r_drawentities);
1940         Cvar_RegisterVariable(&r_cullentities_trace);
1941         Cvar_RegisterVariable(&r_cullentities_trace_samples);
1942         Cvar_RegisterVariable(&r_cullentities_trace_enlarge);
1943         Cvar_RegisterVariable(&r_cullentities_trace_delay);
1944         Cvar_RegisterVariable(&r_drawviewmodel);
1945         Cvar_RegisterVariable(&r_speeds);
1946         Cvar_RegisterVariable(&r_fullbrights);
1947         Cvar_RegisterVariable(&r_wateralpha);
1948         Cvar_RegisterVariable(&r_dynamic);
1949         Cvar_RegisterVariable(&r_fullbright);
1950         Cvar_RegisterVariable(&r_shadows);
1951         Cvar_RegisterVariable(&r_shadows_throwdistance);
1952         Cvar_RegisterVariable(&r_q1bsp_skymasking);
1953         Cvar_RegisterVariable(&r_polygonoffset_submodel_factor);
1954         Cvar_RegisterVariable(&r_polygonoffset_submodel_offset);
1955         Cvar_RegisterVariable(&r_textureunits);
1956         Cvar_RegisterVariable(&r_glsl);
1957         Cvar_RegisterVariable(&r_glsl_offsetmapping);
1958         Cvar_RegisterVariable(&r_glsl_offsetmapping_reliefmapping);
1959         Cvar_RegisterVariable(&r_glsl_offsetmapping_scale);
1960         Cvar_RegisterVariable(&r_glsl_deluxemapping);
1961         Cvar_RegisterVariable(&r_water);
1962         Cvar_RegisterVariable(&r_water_resolutionmultiplier);
1963         Cvar_RegisterVariable(&r_water_clippingplanebias);
1964         Cvar_RegisterVariable(&r_water_refractdistort);
1965         Cvar_RegisterVariable(&r_water_reflectdistort);
1966         Cvar_RegisterVariable(&r_lerpsprites);
1967         Cvar_RegisterVariable(&r_lerpmodels);
1968         Cvar_RegisterVariable(&r_lerplightstyles);
1969         Cvar_RegisterVariable(&r_waterscroll);
1970         Cvar_RegisterVariable(&r_bloom);
1971         Cvar_RegisterVariable(&r_bloom_colorscale);
1972         Cvar_RegisterVariable(&r_bloom_brighten);
1973         Cvar_RegisterVariable(&r_bloom_blur);
1974         Cvar_RegisterVariable(&r_bloom_resolution);
1975         Cvar_RegisterVariable(&r_bloom_colorexponent);
1976         Cvar_RegisterVariable(&r_bloom_colorsubtract);
1977         Cvar_RegisterVariable(&r_hdr);
1978         Cvar_RegisterVariable(&r_hdr_scenebrightness);
1979         Cvar_RegisterVariable(&r_glsl_contrastboost);
1980         Cvar_RegisterVariable(&r_hdr_glowintensity);
1981         Cvar_RegisterVariable(&r_hdr_range);
1982         Cvar_RegisterVariable(&r_smoothnormals_areaweighting);
1983         Cvar_RegisterVariable(&developer_texturelogging);
1984         Cvar_RegisterVariable(&gl_lightmaps);
1985         Cvar_RegisterVariable(&r_test);
1986         Cvar_RegisterVariable(&r_batchmode);
1987         if (gamemode == GAME_NEHAHRA || gamemode == GAME_TENEBRAE)
1988                 Cvar_SetValue("r_fullbrights", 0);
1989         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
1990
1991         Cvar_RegisterVariable(&r_track_sprites);
1992         Cvar_RegisterVariable(&r_track_sprites_flags);
1993         Cvar_RegisterVariable(&r_track_sprites_scalew);
1994         Cvar_RegisterVariable(&r_track_sprites_scaleh);
1995 }
1996
1997 extern void R_Textures_Init(void);
1998 extern void GL_Draw_Init(void);
1999 extern void GL_Main_Init(void);
2000 extern void R_Shadow_Init(void);
2001 extern void R_Sky_Init(void);
2002 extern void GL_Surf_Init(void);
2003 extern void R_Particles_Init(void);
2004 extern void R_Explosion_Init(void);
2005 extern void gl_backend_init(void);
2006 extern void Sbar_Init(void);
2007 extern void R_LightningBeams_Init(void);
2008 extern void Mod_RenderInit(void);
2009
2010 void Render_Init(void)
2011 {
2012         gl_backend_init();
2013         R_Textures_Init();
2014         GL_Main_Init();
2015         GL_Draw_Init();
2016         R_Shadow_Init();
2017         R_Sky_Init();
2018         GL_Surf_Init();
2019         Sbar_Init();
2020         R_Particles_Init();
2021         R_Explosion_Init();
2022         R_LightningBeams_Init();
2023         Mod_RenderInit();
2024 }
2025
2026 /*
2027 ===============
2028 GL_Init
2029 ===============
2030 */
2031 extern char *ENGINE_EXTENSIONS;
2032 void GL_Init (void)
2033 {
2034         VID_CheckExtensions();
2035
2036         // LordHavoc: report supported extensions
2037         Con_DPrintf("\nQuakeC extensions for server and client: %s\nQuakeC extensions for menu: %s\n", vm_sv_extensions, vm_m_extensions );
2038
2039         // clear to black (loading plaque will be seen over this)
2040         CHECKGLERROR
2041         qglClearColor(0,0,0,1);CHECKGLERROR
2042         qglClear(GL_COLOR_BUFFER_BIT);CHECKGLERROR
2043 }
2044
2045 int R_CullBox(const vec3_t mins, const vec3_t maxs)
2046 {
2047         int i;
2048         mplane_t *p;
2049         for (i = 0;i < r_view.numfrustumplanes;i++)
2050         {
2051                 // skip nearclip plane, it often culls portals when you are very close, and is almost never useful
2052                 if (i == 4)
2053                         continue;
2054                 p = r_view.frustum + i;
2055                 switch(p->signbits)
2056                 {
2057                 default:
2058                 case 0:
2059                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
2060                                 return true;
2061                         break;
2062                 case 1:
2063                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
2064                                 return true;
2065                         break;
2066                 case 2:
2067                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
2068                                 return true;
2069                         break;
2070                 case 3:
2071                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
2072                                 return true;
2073                         break;
2074                 case 4:
2075                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
2076                                 return true;
2077                         break;
2078                 case 5:
2079                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
2080                                 return true;
2081                         break;
2082                 case 6:
2083                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
2084                                 return true;
2085                         break;
2086                 case 7:
2087                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
2088                                 return true;
2089                         break;
2090                 }
2091         }
2092         return false;
2093 }
2094
2095 int R_CullBoxCustomPlanes(const vec3_t mins, const vec3_t maxs, int numplanes, const mplane_t *planes)
2096 {
2097         int i;
2098         const mplane_t *p;
2099         for (i = 0;i < numplanes;i++)
2100         {
2101                 p = planes + i;
2102                 switch(p->signbits)
2103                 {
2104                 default:
2105                 case 0:
2106                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
2107                                 return true;
2108                         break;
2109                 case 1:
2110                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
2111                                 return true;
2112                         break;
2113                 case 2:
2114                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
2115                                 return true;
2116                         break;
2117                 case 3:
2118                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
2119                                 return true;
2120                         break;
2121                 case 4:
2122                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
2123                                 return true;
2124                         break;
2125                 case 5:
2126                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
2127                                 return true;
2128                         break;
2129                 case 6:
2130                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
2131                                 return true;
2132                         break;
2133                 case 7:
2134                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
2135                                 return true;
2136                         break;
2137                 }
2138         }
2139         return false;
2140 }
2141
2142 //==================================================================================
2143
2144 static void R_UpdateEntityLighting(entity_render_t *ent)
2145 {
2146         vec3_t tempdiffusenormal;
2147
2148         // fetch the lighting from the worldmodel data
2149         VectorSet(ent->modellight_ambient, r_ambient.value * (2.0f / 128.0f), r_ambient.value * (2.0f / 128.0f), r_ambient.value * (2.0f / 128.0f));
2150         VectorClear(ent->modellight_diffuse);
2151         VectorClear(tempdiffusenormal);
2152         if ((ent->flags & RENDER_LIGHT) && r_refdef.worldmodel && r_refdef.worldmodel->brush.LightPoint)
2153         {
2154                 vec3_t org;
2155                 Matrix4x4_OriginFromMatrix(&ent->matrix, org);
2156                 r_refdef.worldmodel->brush.LightPoint(r_refdef.worldmodel, org, ent->modellight_ambient, ent->modellight_diffuse, tempdiffusenormal);
2157         }
2158         else // highly rare
2159                 VectorSet(ent->modellight_ambient, 1, 1, 1);
2160
2161         // move the light direction into modelspace coordinates for lighting code
2162         Matrix4x4_Transform3x3(&ent->inversematrix, tempdiffusenormal, ent->modellight_lightdir);
2163         if(VectorLength2(ent->modellight_lightdir) > 0)
2164         {
2165                 VectorNormalize(ent->modellight_lightdir);
2166         }
2167         else
2168         {
2169                 VectorSet(ent->modellight_lightdir, 0, 0, 1); // have to set SOME valid vector here
2170         }
2171
2172         // scale ambient and directional light contributions according to rendering variables
2173         ent->modellight_ambient[0] *= ent->colormod[0] * r_refdef.lightmapintensity;
2174         ent->modellight_ambient[1] *= ent->colormod[1] * r_refdef.lightmapintensity;
2175         ent->modellight_ambient[2] *= ent->colormod[2] * r_refdef.lightmapintensity;
2176         ent->modellight_diffuse[0] *= ent->colormod[0] * r_refdef.lightmapintensity;
2177         ent->modellight_diffuse[1] *= ent->colormod[1] * r_refdef.lightmapintensity;
2178         ent->modellight_diffuse[2] *= ent->colormod[2] * r_refdef.lightmapintensity;
2179 }
2180
2181 static void R_View_UpdateEntityVisible (void)
2182 {
2183         int i, renderimask;
2184         entity_render_t *ent;
2185
2186         if (!r_drawentities.integer)
2187                 return;
2188
2189         renderimask = r_refdef.envmap ? (RENDER_EXTERIORMODEL | RENDER_VIEWMODEL) : ((chase_active.integer || r_waterstate.renderingscene) ? RENDER_VIEWMODEL : RENDER_EXTERIORMODEL);
2190         if (r_refdef.worldmodel && r_refdef.worldmodel->brush.BoxTouchingVisibleLeafs)
2191         {
2192                 // worldmodel can check visibility
2193                 for (i = 0;i < r_refdef.numentities;i++)
2194                 {
2195                         ent = r_refdef.entities[i];
2196                         r_viewcache.entityvisible[i] = !(ent->flags & renderimask) && ((ent->model && ent->model->type == mod_sprite && (ent->model->sprite.sprnum_type == SPR_LABEL || ent->model->sprite.sprnum_type == SPR_LABEL_SCALE)) || !R_CullBox(ent->mins, ent->maxs)) && ((ent->effects & EF_NODEPTHTEST) || (ent->flags & RENDER_VIEWMODEL) || r_refdef.worldmodel->brush.BoxTouchingVisibleLeafs(r_refdef.worldmodel, r_viewcache.world_leafvisible, ent->mins, ent->maxs));
2197
2198                 }
2199                 if(r_cullentities_trace.integer)
2200                 {
2201                         for (i = 0;i < r_refdef.numentities;i++)
2202                         {
2203                                 ent = r_refdef.entities[i];
2204                                 if(r_viewcache.entityvisible[i] && !(ent->effects & EF_NODEPTHTEST) && !(ent->flags & RENDER_VIEWMODEL) && !(ent->model && (ent->model->name[0] == '*')))
2205                                 {
2206                                         if(Mod_CanSeeBox_Trace(r_cullentities_trace_samples.integer, r_cullentities_trace_enlarge.value, r_refdef.worldmodel, r_view.origin, ent->mins, ent->maxs))
2207                                                 ent->last_trace_visibility = realtime;
2208                                         if(ent->last_trace_visibility < realtime - r_cullentities_trace_delay.value)
2209                                                 r_viewcache.entityvisible[i] = 0;
2210                                 }
2211                         }
2212                 }
2213         }
2214         else
2215         {
2216                 // no worldmodel or it can't check visibility
2217                 for (i = 0;i < r_refdef.numentities;i++)
2218                 {
2219                         ent = r_refdef.entities[i];
2220                         r_viewcache.entityvisible[i] = !(ent->flags & renderimask) && ((ent->model && ent->model->type == mod_sprite && (ent->model->sprite.sprnum_type == SPR_LABEL || ent->model->sprite.sprnum_type == SPR_LABEL_SCALE)) || !R_CullBox(ent->mins, ent->maxs));
2221                 }
2222         }
2223
2224         // update entity lighting (even on hidden entities for r_shadows)
2225         for (i = 0;i < r_refdef.numentities;i++)
2226                 R_UpdateEntityLighting(r_refdef.entities[i]);
2227 }
2228
2229 // only used if skyrendermasked, and normally returns false
2230 int R_DrawBrushModelsSky (void)
2231 {
2232         int i, sky;
2233         entity_render_t *ent;
2234
2235         if (!r_drawentities.integer)
2236                 return false;
2237
2238         sky = false;
2239         for (i = 0;i < r_refdef.numentities;i++)
2240         {
2241                 if (!r_viewcache.entityvisible[i])
2242                         continue;
2243                 ent = r_refdef.entities[i];
2244                 if (!ent->model || !ent->model->DrawSky)
2245                         continue;
2246                 ent->model->DrawSky(ent);
2247                 sky = true;
2248         }
2249         return sky;
2250 }
2251
2252 static void R_DrawNoModel(entity_render_t *ent);
2253 static void R_DrawModels(void)
2254 {
2255         int i;
2256         entity_render_t *ent;
2257
2258         if (!r_drawentities.integer)
2259                 return;
2260
2261         for (i = 0;i < r_refdef.numentities;i++)
2262         {
2263                 if (!r_viewcache.entityvisible[i])
2264                         continue;
2265                 ent = r_refdef.entities[i];
2266                 r_refdef.stats.entities++;
2267                 if (ent->model && ent->model->Draw != NULL)
2268                         ent->model->Draw(ent);
2269                 else
2270                         R_DrawNoModel(ent);
2271         }
2272 }
2273
2274 static void R_DrawModelsDepth(void)
2275 {
2276         int i;
2277         entity_render_t *ent;
2278
2279         if (!r_drawentities.integer)
2280                 return;
2281
2282         for (i = 0;i < r_refdef.numentities;i++)
2283         {
2284                 if (!r_viewcache.entityvisible[i])
2285                         continue;
2286                 ent = r_refdef.entities[i];
2287                 if (ent->model && ent->model->DrawDepth != NULL)
2288                         ent->model->DrawDepth(ent);
2289         }
2290 }
2291
2292 static void R_DrawModelsDebug(void)
2293 {
2294         int i;
2295         entity_render_t *ent;
2296
2297         if (!r_drawentities.integer)
2298                 return;
2299
2300         for (i = 0;i < r_refdef.numentities;i++)
2301         {
2302                 if (!r_viewcache.entityvisible[i])
2303                         continue;
2304                 ent = r_refdef.entities[i];
2305                 if (ent->model && ent->model->DrawDebug != NULL)
2306                         ent->model->DrawDebug(ent);
2307         }
2308 }
2309
2310 static void R_DrawModelsAddWaterPlanes(void)
2311 {
2312         int i;
2313         entity_render_t *ent;
2314
2315         if (!r_drawentities.integer)
2316                 return;
2317
2318         for (i = 0;i < r_refdef.numentities;i++)
2319         {
2320                 if (!r_viewcache.entityvisible[i])
2321                         continue;
2322                 ent = r_refdef.entities[i];
2323                 if (ent->model && ent->model->DrawAddWaterPlanes != NULL)
2324                         ent->model->DrawAddWaterPlanes(ent);
2325         }
2326 }
2327
2328 static void R_View_SetFrustum(void)
2329 {
2330         int i;
2331         double slopex, slopey;
2332
2333         // break apart the view matrix into vectors for various purposes
2334         Matrix4x4_ToVectors(&r_view.matrix, r_view.forward, r_view.left, r_view.up, r_view.origin);
2335         VectorNegate(r_view.left, r_view.right);
2336
2337 #if 0
2338         r_view.frustum[0].normal[0] = 0 - 1.0 / r_view.frustum_x;
2339         r_view.frustum[0].normal[1] = 0 - 0;
2340         r_view.frustum[0].normal[2] = -1 - 0;
2341         r_view.frustum[1].normal[0] = 0 + 1.0 / r_view.frustum_x;
2342         r_view.frustum[1].normal[1] = 0 + 0;
2343         r_view.frustum[1].normal[2] = -1 + 0;
2344         r_view.frustum[2].normal[0] = 0 - 0;
2345         r_view.frustum[2].normal[1] = 0 - 1.0 / r_view.frustum_y;
2346         r_view.frustum[2].normal[2] = -1 - 0;
2347         r_view.frustum[3].normal[0] = 0 + 0;
2348         r_view.frustum[3].normal[1] = 0 + 1.0 / r_view.frustum_y;
2349         r_view.frustum[3].normal[2] = -1 + 0;
2350 #endif
2351
2352 #if 0
2353         zNear = r_refdef.nearclip;
2354         nudge = 1.0 - 1.0 / (1<<23);
2355         r_view.frustum[4].normal[0] = 0 - 0;
2356         r_view.frustum[4].normal[1] = 0 - 0;
2357         r_view.frustum[4].normal[2] = -1 - -nudge;
2358         r_view.frustum[4].dist = 0 - -2 * zNear * nudge;
2359         r_view.frustum[5].normal[0] = 0 + 0;
2360         r_view.frustum[5].normal[1] = 0 + 0;
2361         r_view.frustum[5].normal[2] = -1 + -nudge;
2362         r_view.frustum[5].dist = 0 + -2 * zNear * nudge;
2363 #endif
2364
2365
2366
2367 #if 0
2368         r_view.frustum[0].normal[0] = m[3] - m[0];
2369         r_view.frustum[0].normal[1] = m[7] - m[4];
2370         r_view.frustum[0].normal[2] = m[11] - m[8];
2371         r_view.frustum[0].dist = m[15] - m[12];
2372
2373         r_view.frustum[1].normal[0] = m[3] + m[0];
2374         r_view.frustum[1].normal[1] = m[7] + m[4];
2375         r_view.frustum[1].normal[2] = m[11] + m[8];
2376         r_view.frustum[1].dist = m[15] + m[12];
2377
2378         r_view.frustum[2].normal[0] = m[3] - m[1];
2379         r_view.frustum[2].normal[1] = m[7] - m[5];
2380         r_view.frustum[2].normal[2] = m[11] - m[9];
2381         r_view.frustum[2].dist = m[15] - m[13];
2382
2383         r_view.frustum[3].normal[0] = m[3] + m[1];
2384         r_view.frustum[3].normal[1] = m[7] + m[5];
2385         r_view.frustum[3].normal[2] = m[11] + m[9];
2386         r_view.frustum[3].dist = m[15] + m[13];
2387
2388         r_view.frustum[4].normal[0] = m[3] - m[2];
2389         r_view.frustum[4].normal[1] = m[7] - m[6];
2390         r_view.frustum[4].normal[2] = m[11] - m[10];
2391         r_view.frustum[4].dist = m[15] - m[14];
2392
2393         r_view.frustum[5].normal[0] = m[3] + m[2];
2394         r_view.frustum[5].normal[1] = m[7] + m[6];
2395         r_view.frustum[5].normal[2] = m[11] + m[10];
2396         r_view.frustum[5].dist = m[15] + m[14];
2397 #endif
2398
2399         if (r_view.useperspective)
2400         {
2401                 slopex = 1.0 / r_view.frustum_x;
2402                 slopey = 1.0 / r_view.frustum_y;
2403                 VectorMA(r_view.forward, -slopex, r_view.left, r_view.frustum[0].normal);
2404                 VectorMA(r_view.forward,  slopex, r_view.left, r_view.frustum[1].normal);
2405                 VectorMA(r_view.forward, -slopey, r_view.up  , r_view.frustum[2].normal);
2406                 VectorMA(r_view.forward,  slopey, r_view.up  , r_view.frustum[3].normal);
2407                 VectorCopy(r_view.forward, r_view.frustum[4].normal);
2408                 
2409                 // Leaving those out was a mistake, those were in the old code, and they
2410                 // fix a reproducable bug in this one: frustum culling got fucked up when viewmatrix was an identity matrix
2411                 // I couldn't reproduce it after adding those normalizations. --blub
2412                 VectorNormalize(r_view.frustum[0].normal);
2413                 VectorNormalize(r_view.frustum[1].normal);
2414                 VectorNormalize(r_view.frustum[2].normal);
2415                 VectorNormalize(r_view.frustum[3].normal);
2416
2417                 // calculate frustum corners, which are used to calculate deformed frustum planes for shadow caster culling
2418                 VectorMAMAMAM(1, r_view.origin, 1024, r_view.forward, -1024 * slopex, r_view.left, -1024 * slopey, r_view.up, r_view.frustumcorner[0]);
2419                 VectorMAMAMAM(1, r_view.origin, 1024, r_view.forward,  1024 * slopex, r_view.left, -1024 * slopey, r_view.up, r_view.frustumcorner[1]);
2420                 VectorMAMAMAM(1, r_view.origin, 1024, r_view.forward, -1024 * slopex, r_view.left,  1024 * slopey, r_view.up, r_view.frustumcorner[2]);
2421                 VectorMAMAMAM(1, r_view.origin, 1024, r_view.forward,  1024 * slopex, r_view.left,  1024 * slopey, r_view.up, r_view.frustumcorner[3]);
2422
2423                 r_view.frustum[0].dist = DotProduct (r_view.origin, r_view.frustum[0].normal);
2424                 r_view.frustum[1].dist = DotProduct (r_view.origin, r_view.frustum[1].normal);
2425                 r_view.frustum[2].dist = DotProduct (r_view.origin, r_view.frustum[2].normal);
2426                 r_view.frustum[3].dist = DotProduct (r_view.origin, r_view.frustum[3].normal);
2427                 r_view.frustum[4].dist = DotProduct (r_view.origin, r_view.frustum[4].normal) + r_refdef.nearclip;
2428         }
2429         else
2430         {
2431                 VectorScale(r_view.left, -r_view.ortho_x, r_view.frustum[0].normal);
2432                 VectorScale(r_view.left,  r_view.ortho_x, r_view.frustum[1].normal);
2433                 VectorScale(r_view.up, -r_view.ortho_y, r_view.frustum[2].normal);
2434                 VectorScale(r_view.up,  r_view.ortho_y, r_view.frustum[3].normal);
2435                 VectorCopy(r_view.forward, r_view.frustum[4].normal);
2436                 r_view.frustum[0].dist = DotProduct (r_view.origin, r_view.frustum[0].normal) + r_view.ortho_x;
2437                 r_view.frustum[1].dist = DotProduct (r_view.origin, r_view.frustum[1].normal) + r_view.ortho_x;
2438                 r_view.frustum[2].dist = DotProduct (r_view.origin, r_view.frustum[2].normal) + r_view.ortho_y;
2439                 r_view.frustum[3].dist = DotProduct (r_view.origin, r_view.frustum[3].normal) + r_view.ortho_y;
2440                 r_view.frustum[4].dist = DotProduct (r_view.origin, r_view.frustum[4].normal) + r_refdef.nearclip;
2441         }
2442         r_view.numfrustumplanes = 5;
2443
2444         if (r_view.useclipplane)
2445         {
2446                 r_view.numfrustumplanes = 6;
2447                 r_view.frustum[5] = r_view.clipplane;
2448         }
2449
2450         for (i = 0;i < r_view.numfrustumplanes;i++)
2451                 PlaneClassify(r_view.frustum + i);
2452
2453         // LordHavoc: note to all quake engine coders, Quake had a special case
2454         // for 90 degrees which assumed a square view (wrong), so I removed it,
2455         // Quake2 has it disabled as well.
2456
2457         // rotate R_VIEWFORWARD right by FOV_X/2 degrees
2458         //RotatePointAroundVector( r_view.frustum[0].normal, r_view.up, r_view.forward, -(90 - r_refdef.fov_x / 2));
2459         //r_view.frustum[0].dist = DotProduct (r_view.origin, frustum[0].normal);
2460         //PlaneClassify(&frustum[0]);
2461
2462         // rotate R_VIEWFORWARD left by FOV_X/2 degrees
2463         //RotatePointAroundVector( r_view.frustum[1].normal, r_view.up, r_view.forward, (90 - r_refdef.fov_x / 2));
2464         //r_view.frustum[1].dist = DotProduct (r_view.origin, frustum[1].normal);
2465         //PlaneClassify(&frustum[1]);
2466
2467         // rotate R_VIEWFORWARD up by FOV_X/2 degrees
2468         //RotatePointAroundVector( r_view.frustum[2].normal, r_view.left, r_view.forward, -(90 - r_refdef.fov_y / 2));
2469         //r_view.frustum[2].dist = DotProduct (r_view.origin, frustum[2].normal);
2470         //PlaneClassify(&frustum[2]);
2471
2472         // rotate R_VIEWFORWARD down by FOV_X/2 degrees
2473         //RotatePointAroundVector( r_view.frustum[3].normal, r_view.left, r_view.forward, (90 - r_refdef.fov_y / 2));
2474         //r_view.frustum[3].dist = DotProduct (r_view.origin, frustum[3].normal);
2475         //PlaneClassify(&frustum[3]);
2476
2477         // nearclip plane
2478         //VectorCopy(r_view.forward, r_view.frustum[4].normal);
2479         //r_view.frustum[4].dist = DotProduct (r_view.origin, frustum[4].normal) + r_nearclip.value;
2480         //PlaneClassify(&frustum[4]);
2481 }
2482
2483 void R_View_Update(void)
2484 {
2485         R_View_SetFrustum();
2486         R_View_WorldVisibility(r_view.useclipplane);
2487         R_View_UpdateEntityVisible();
2488 }
2489
2490 void R_SetupView(void)
2491 {
2492         if (!r_view.useperspective)
2493                 GL_SetupView_Mode_Ortho(-r_view.ortho_x, -r_view.ortho_y, r_view.ortho_x, r_view.ortho_y, -r_refdef.farclip, r_refdef.farclip);
2494         else if (r_refdef.rtworldshadows || r_refdef.rtdlightshadows)
2495                 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_view.frustum_x, r_view.frustum_y, r_refdef.nearclip);
2496         else
2497                 GL_SetupView_Mode_Perspective(r_view.frustum_x, r_view.frustum_y, r_refdef.nearclip, r_refdef.farclip);
2498
2499         GL_SetupView_Orientation_FromEntity(&r_view.matrix);
2500
2501         if (r_view.useclipplane)
2502         {
2503                 // LordHavoc: couldn't figure out how to make this approach the
2504                 vec_t dist = r_view.clipplane.dist - r_water_clippingplanebias.value;
2505                 vec_t viewdist = DotProduct(r_view.origin, r_view.clipplane.normal);
2506                 if (viewdist < r_view.clipplane.dist + r_water_clippingplanebias.value)
2507                         dist = r_view.clipplane.dist;
2508                 GL_SetupView_ApplyCustomNearClipPlane(r_view.clipplane.normal[0], r_view.clipplane.normal[1], r_view.clipplane.normal[2], dist);
2509         }
2510 }
2511
2512 void R_ResetViewRendering2D(void)
2513 {
2514         if (gl_support_fragment_shader)
2515         {
2516                 qglUseProgramObjectARB(0);CHECKGLERROR
2517         }
2518
2519         DrawQ_Finish();
2520
2521         // GL is weird because it's bottom to top, r_view.y is top to bottom
2522         qglViewport(r_view.x, vid.height - (r_view.y + r_view.height), r_view.width, r_view.height);CHECKGLERROR
2523         GL_SetupView_Mode_Ortho(0, 0, 1, 1, -10, 100);
2524         GL_Scissor(r_view.x, r_view.y, r_view.width, r_view.height);
2525         GL_Color(1, 1, 1, 1);
2526         GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
2527         GL_BlendFunc(GL_ONE, GL_ZERO);
2528         GL_AlphaTest(false);
2529         GL_ScissorTest(false);
2530         GL_DepthMask(false);
2531         GL_DepthRange(0, 1);
2532         GL_DepthTest(false);
2533         R_Mesh_Matrix(&identitymatrix);
2534         R_Mesh_ResetTextureState();
2535         GL_PolygonOffset(0, 0);
2536         qglEnable(GL_POLYGON_OFFSET_FILL);CHECKGLERROR
2537         qglDepthFunc(GL_LEQUAL);CHECKGLERROR
2538         qglDisable(GL_STENCIL_TEST);CHECKGLERROR
2539         qglStencilMask(~0);CHECKGLERROR
2540         qglStencilFunc(GL_ALWAYS, 128, ~0);CHECKGLERROR
2541         qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
2542         GL_CullFace(GL_FRONT); // quake is backwards, this culls back faces
2543 }
2544
2545 void R_ResetViewRendering3D(void)
2546 {
2547         if (gl_support_fragment_shader)
2548         {
2549                 qglUseProgramObjectARB(0);CHECKGLERROR
2550         }
2551
2552         DrawQ_Finish();
2553
2554         // GL is weird because it's bottom to top, r_view.y is top to bottom
2555         qglViewport(r_view.x, vid.height - (r_view.y + r_view.height), r_view.width, r_view.height);CHECKGLERROR
2556         R_SetupView();
2557         GL_Scissor(r_view.x, r_view.y, r_view.width, r_view.height);
2558         GL_Color(1, 1, 1, 1);
2559         GL_ColorMask(r_view.colormask[0], r_view.colormask[1], r_view.colormask[2], 1);
2560         GL_BlendFunc(GL_ONE, GL_ZERO);
2561         GL_AlphaTest(false);
2562         GL_ScissorTest(true);
2563         GL_DepthMask(true);
2564         GL_DepthRange(0, 1);
2565         GL_DepthTest(true);
2566         R_Mesh_Matrix(&identitymatrix);
2567         R_Mesh_ResetTextureState();
2568         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
2569         qglEnable(GL_POLYGON_OFFSET_FILL);CHECKGLERROR
2570         qglDepthFunc(GL_LEQUAL);CHECKGLERROR
2571         qglDisable(GL_STENCIL_TEST);CHECKGLERROR
2572         qglStencilMask(~0);CHECKGLERROR
2573         qglStencilFunc(GL_ALWAYS, 128, ~0);CHECKGLERROR
2574         qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);CHECKGLERROR
2575         GL_CullFace(r_view.cullface_back);
2576 }
2577
2578 /*
2579         R_Bloom_SetupShader(
2580 "// bloom shader\n"
2581 "// written by Forest 'LordHavoc' Hale\n"
2582 "\n"
2583 "// common definitions between vertex shader and fragment shader:\n"
2584 "\n"
2585 "#ifdef __GLSL_CG_DATA_TYPES\n"
2586 "#define myhalf half\n"
2587 "#define myhvec2 hvec2\n"
2588 "#define myhvec3 hvec3\n"
2589 "#define myhvec4 hvec4\n"
2590 "#else\n"
2591 "#define myhalf float\n"
2592 "#define myhvec2 vec2\n"
2593 "#define myhvec3 vec3\n"
2594 "#define myhvec4 vec4\n"
2595 "#endif\n"
2596 "\n"
2597 "varying vec2 ScreenTexCoord;\n"
2598 "varying vec2 BloomTexCoord;\n"
2599 "\n"
2600 "\n"
2601 "\n"
2602 "\n"
2603 "// vertex shader specific:\n"
2604 "#ifdef VERTEX_SHADER\n"
2605 "\n"
2606 "void main(void)\n"
2607 "{\n"
2608 "       ScreenTexCoord = vec2(gl_MultiTexCoord0);\n"
2609 "       BloomTexCoord = vec2(gl_MultiTexCoord1);\n"
2610 "       // transform vertex to camera space, using ftransform to match non-VS\n"
2611 "       // rendering\n"
2612 "       gl_Position = ftransform();\n"
2613 "}\n"
2614 "\n"
2615 "#endif // VERTEX_SHADER\n"
2616 "\n"
2617 "\n"
2618 "\n"
2619 "\n"
2620 "// fragment shader specific:\n"
2621 "#ifdef FRAGMENT_SHADER\n"
2622 "\n"
2623 "void main(void)\n"
2624 "{\n"
2625 "       int x, y;
2626 "       myhvec3 color = myhvec3(texture2D(Texture_Screen, ScreenTexCoord));\n"
2627 "       for (x = -BLUR_X;x <= BLUR_X;x++)
2628 "       color.rgb += myhvec3(texture2D(Texture_Bloom, BloomTexCoord));\n"
2629 "       color.rgb += myhvec3(texture2D(Texture_Bloom, BloomTexCoord));\n"
2630 "       color.rgb += myhvec3(texture2D(Texture_Bloom, BloomTexCoord));\n"
2631 "       color.rgb += myhvec3(texture2D(Texture_Bloom, BloomTexCoord));\n"
2632
2633 "       gl_FragColor = vec4(color);\n"
2634 "}\n"
2635 "\n"
2636 "#endif // FRAGMENT_SHADER\n"
2637 */
2638
2639 void R_RenderScene(qboolean addwaterplanes);
2640
2641 static void R_Water_StartFrame(void)
2642 {
2643         int i;
2644         int waterwidth, waterheight, texturewidth, textureheight;
2645         r_waterstate_waterplane_t *p;
2646
2647         // set waterwidth and waterheight to the water resolution that will be
2648         // used (often less than the screen resolution for faster rendering)
2649         waterwidth = (int)bound(1, r_view.width * r_water_resolutionmultiplier.value, r_view.width);
2650         waterheight = (int)bound(1, r_view.height * r_water_resolutionmultiplier.value, r_view.height);
2651
2652         // calculate desired texture sizes
2653         // can't use water if the card does not support the texture size
2654         if (!r_water.integer || !r_glsl.integer || !gl_support_fragment_shader || waterwidth > gl_max_texture_size || waterheight > gl_max_texture_size)
2655                 texturewidth = textureheight = waterwidth = waterheight = 0;
2656         else if (gl_support_arb_texture_non_power_of_two)
2657         {
2658                 texturewidth = waterwidth;
2659                 textureheight = waterheight;
2660         }
2661         else
2662         {
2663                 for (texturewidth   = 1;texturewidth   < waterwidth ;texturewidth   *= 2);
2664                 for (textureheight  = 1;textureheight  < waterheight;textureheight  *= 2);
2665         }
2666
2667         // allocate textures as needed
2668         if (r_waterstate.waterwidth != waterwidth || r_waterstate.waterheight != waterheight || r_waterstate.texturewidth != texturewidth || r_waterstate.textureheight != textureheight)
2669         {
2670                 r_waterstate.maxwaterplanes = MAX_WATERPLANES;
2671                 for (i = 0, p = r_waterstate.waterplanes;i < r_waterstate.maxwaterplanes;i++, p++)
2672                 {
2673                         if (p->texture_refraction)
2674                                 R_FreeTexture(p->texture_refraction);
2675                         p->texture_refraction = NULL;
2676                         if (p->texture_reflection)
2677                                 R_FreeTexture(p->texture_reflection);
2678                         p->texture_reflection = NULL;
2679                 }
2680                 memset(&r_waterstate, 0, sizeof(r_waterstate));
2681                 r_waterstate.waterwidth = waterwidth;
2682                 r_waterstate.waterheight = waterheight;
2683                 r_waterstate.texturewidth = texturewidth;
2684                 r_waterstate.textureheight = textureheight;
2685         }
2686
2687         if (r_waterstate.waterwidth)
2688         {
2689                 r_waterstate.enabled = true;
2690
2691                 // set up variables that will be used in shader setup
2692                 r_waterstate.screenscale[0] = 0.5f * (float)waterwidth / (float)texturewidth;
2693                 r_waterstate.screenscale[1] = 0.5f * (float)waterheight / (float)textureheight;
2694                 r_waterstate.screencenter[0] = 0.5f * (float)waterwidth / (float)texturewidth;
2695                 r_waterstate.screencenter[1] = 0.5f * (float)waterheight / (float)textureheight;
2696         }
2697
2698         r_waterstate.maxwaterplanes = MAX_WATERPLANES;
2699         r_waterstate.numwaterplanes = 0;
2700 }
2701
2702 static void R_Water_AddWaterPlane(msurface_t *surface)
2703 {
2704         int triangleindex, planeindex;
2705         const int *e;
2706         vec3_t vert[3];
2707         vec3_t normal;
2708         vec3_t center;
2709         r_waterstate_waterplane_t *p;
2710         // just use the first triangle with a valid normal for any decisions
2711         VectorClear(normal);
2712         for (triangleindex = 0, e = rsurface.modelelement3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2713         {
2714                 Matrix4x4_Transform(&rsurface.matrix, rsurface.modelvertex3f + e[0]*3, vert[0]);
2715                 Matrix4x4_Transform(&rsurface.matrix, rsurface.modelvertex3f + e[1]*3, vert[1]);
2716                 Matrix4x4_Transform(&rsurface.matrix, rsurface.modelvertex3f + e[2]*3, vert[2]);
2717                 TriangleNormal(vert[0], vert[1], vert[2], normal);
2718                 if (VectorLength2(normal) >= 0.001)
2719                         break;
2720         }
2721
2722         // find a matching plane if there is one
2723         for (planeindex = 0, p = r_waterstate.waterplanes;planeindex < r_waterstate.numwaterplanes;planeindex++, p++)
2724                 if (fabs(PlaneDiff(vert[0], &p->plane)) < 1 && fabs(PlaneDiff(vert[1], &p->plane)) < 1 && fabs(PlaneDiff(vert[2], &p->plane)) < 1)
2725                         break;
2726         if (planeindex >= r_waterstate.maxwaterplanes)
2727                 return; // nothing we can do, out of planes
2728
2729         // if this triangle does not fit any known plane rendered this frame, add one
2730         if (planeindex >= r_waterstate.numwaterplanes)
2731         {
2732                 // store the new plane
2733                 r_waterstate.numwaterplanes++;
2734                 VectorCopy(normal, p->plane.normal);
2735                 VectorNormalize(p->plane.normal);
2736                 p->plane.dist = DotProduct(vert[0], p->plane.normal);
2737                 PlaneClassify(&p->plane);
2738                 // flip the plane if it does not face the viewer
2739                 if (PlaneDiff(r_view.origin, &p->plane) < 0)
2740                 {
2741                         VectorNegate(p->plane.normal, p->plane.normal);
2742                         p->plane.dist *= -1;
2743                         PlaneClassify(&p->plane);
2744                 }
2745                 // clear materialflags and pvs
2746                 p->materialflags = 0;
2747                 p->pvsvalid = false;
2748         }
2749         // merge this surface's materialflags into the waterplane
2750         p->materialflags |= surface->texture->currentframe->currentmaterialflags;
2751         // merge this surface's PVS into the waterplane
2752         VectorMAM(0.5f, surface->mins, 0.5f, surface->maxs, center);
2753         if (p->materialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION) && r_refdef.worldmodel && r_refdef.worldmodel->brush.FatPVS
2754          && r_refdef.worldmodel->brush.PointInLeaf && r_refdef.worldmodel->brush.PointInLeaf(r_refdef.worldmodel, center)->clusterindex >= 0)
2755         {
2756                 r_refdef.worldmodel->brush.FatPVS(r_refdef.worldmodel, center, 2, p->pvsbits, sizeof(p->pvsbits), p->pvsvalid);
2757                 p->pvsvalid = true;
2758         }
2759 }
2760
2761 static void R_Water_ProcessPlanes(void)
2762 {
2763         r_view_t originalview;
2764         int planeindex;
2765         r_waterstate_waterplane_t *p;
2766
2767         originalview = r_view;
2768
2769         // make sure enough textures are allocated
2770         for (planeindex = 0, p = r_waterstate.waterplanes;planeindex < r_waterstate.numwaterplanes;planeindex++, p++)
2771         {
2772                 if (p->materialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION))
2773                 {
2774                         if (!p->texture_refraction)
2775                                 p->texture_refraction = R_LoadTexture2D(r_main_texturepool, va("waterplane%i_refraction", planeindex), r_waterstate.texturewidth, r_waterstate.textureheight, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_CLAMP | TEXF_ALWAYSPRECACHE, NULL);
2776                         if (!p->texture_refraction)
2777                                 goto error;
2778                 }
2779
2780                 if (p->materialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFLECTION))
2781                 {
2782                         if (!p->texture_reflection)
2783                                 p->texture_reflection = R_LoadTexture2D(r_main_texturepool, va("waterplane%i_reflection", planeindex), r_waterstate.texturewidth, r_waterstate.textureheight, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_CLAMP | TEXF_ALWAYSPRECACHE, NULL);
2784                         if (!p->texture_reflection)
2785                                 goto error;
2786                 }
2787         }
2788
2789         // render views
2790         for (planeindex = 0, p = r_waterstate.waterplanes;planeindex < r_waterstate.numwaterplanes;planeindex++, p++)
2791         {
2792                 r_view.showdebug = false;
2793                 r_view.width = r_waterstate.waterwidth;
2794                 r_view.height = r_waterstate.waterheight;
2795                 r_view.useclipplane = true;
2796                 r_waterstate.renderingscene = true;
2797
2798                 // render the normal view scene and copy into texture
2799                 // (except that a clipping plane should be used to hide everything on one side of the water, and the viewer's weapon model should be omitted)
2800                 if (p->materialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION))
2801                 {
2802                         r_view.clipplane = p->plane;
2803                         VectorNegate(r_view.clipplane.normal, r_view.clipplane.normal);
2804                         r_view.clipplane.dist = -r_view.clipplane.dist;
2805                         PlaneClassify(&r_view.clipplane);
2806
2807                         R_RenderScene(false);
2808
2809                         // copy view into the screen texture
2810                         R_Mesh_TexBind(0, R_GetTexture(p->texture_refraction));
2811                         GL_ActiveTexture(0);
2812                         CHECKGLERROR
2813                         qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_view.height), r_view.width, r_view.height);CHECKGLERROR
2814                 }
2815
2816                 if (p->materialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFLECTION))
2817                 {
2818                         // render reflected scene and copy into texture
2819                         Matrix4x4_Reflect(&r_view.matrix, p->plane.normal[0], p->plane.normal[1], p->plane.normal[2], p->plane.dist, -2);
2820                         r_view.clipplane = p->plane;
2821                         // reverse the cullface settings for this render
2822                         r_view.cullface_front = GL_FRONT;
2823                         r_view.cullface_back = GL_BACK;
2824                         if (r_refdef.worldmodel && r_refdef.worldmodel->brush.num_pvsclusterbytes)
2825                         {
2826                                 r_view.usecustompvs = true;
2827                                 if (p->pvsvalid)
2828                                         memcpy(r_viewcache.world_pvsbits, p->pvsbits, r_refdef.worldmodel->brush.num_pvsclusterbytes);
2829                                 else
2830                                         memset(r_viewcache.world_pvsbits, 0xFF, r_refdef.worldmodel->brush.num_pvsclusterbytes);
2831                         }
2832
2833                         R_ResetViewRendering3D();
2834                         R_ClearScreen();
2835                         if (r_timereport_active)
2836                                 R_TimeReport("viewclear");
2837
2838                         R_RenderScene(false);
2839
2840                         R_Mesh_TexBind(0, R_GetTexture(p->texture_reflection));
2841                         GL_ActiveTexture(0);
2842                         CHECKGLERROR
2843                         qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_view.height), r_view.width, r_view.height);CHECKGLERROR
2844
2845                         R_ResetViewRendering3D();
2846                         R_ClearScreen();
2847                         if (r_timereport_active)
2848                                 R_TimeReport("viewclear");
2849                 }
2850
2851                 r_view = originalview;
2852                 r_view.clear = true;
2853                 r_waterstate.renderingscene = false;
2854         }
2855         return;
2856 error:
2857         r_view = originalview;
2858         r_waterstate.renderingscene = false;
2859         Cvar_SetValueQuick(&r_water, 0);
2860         Con_Printf("R_Water_ProcessPlanes: Error: texture creation failed!  Turned off r_water.\n");
2861         return;
2862 }
2863
2864 void R_Bloom_StartFrame(void)
2865 {
2866         int bloomtexturewidth, bloomtextureheight, screentexturewidth, screentextureheight;
2867
2868         // set bloomwidth and bloomheight to the bloom resolution that will be
2869         // used (often less than the screen resolution for faster rendering)
2870         r_bloomstate.bloomwidth = bound(1, r_bloom_resolution.integer, r_view.width);
2871         r_bloomstate.bloomheight = r_bloomstate.bloomwidth * r_view.height / r_view.width;
2872         r_bloomstate.bloomheight = bound(1, r_bloomstate.bloomheight, r_view.height);
2873
2874         // calculate desired texture sizes
2875         if (gl_support_arb_texture_non_power_of_two)
2876         {
2877                 screentexturewidth = r_view.width;
2878                 screentextureheight = r_view.height;
2879                 bloomtexturewidth = r_bloomstate.bloomwidth;
2880                 bloomtextureheight = r_bloomstate.bloomheight;
2881         }
2882         else
2883         {
2884                 for (screentexturewidth  = 1;screentexturewidth  < vid.width               ;screentexturewidth  *= 2);
2885                 for (screentextureheight = 1;screentextureheight < vid.height              ;screentextureheight *= 2);
2886                 for (bloomtexturewidth   = 1;bloomtexturewidth   < r_bloomstate.bloomwidth ;bloomtexturewidth   *= 2);
2887                 for (bloomtextureheight  = 1;bloomtextureheight  < r_bloomstate.bloomheight;bloomtextureheight  *= 2);
2888         }
2889
2890         if (r_hdr.integer)
2891         {
2892                 screentexturewidth = screentextureheight = 0;
2893         }
2894         else if (r_bloom.integer)
2895         {
2896         }
2897         else
2898         {
2899                 screentexturewidth = screentextureheight = 0;
2900                 bloomtexturewidth = bloomtextureheight = 0;
2901         }
2902
2903         if ((!bloomtexturewidth && !bloomtextureheight) || r_bloom_resolution.integer < 4 || r_bloom_blur.value < 1 || r_bloom_blur.value >= 512 || screentexturewidth > gl_max_texture_size || screentextureheight > gl_max_texture_size || bloomtexturewidth > gl_max_texture_size || bloomtextureheight > gl_max_texture_size)
2904         {
2905                 // can't use bloom if the parameters are too weird
2906                 // can't use bloom if the card does not support the texture size
2907                 if (r_bloomstate.texture_screen)
2908                         R_FreeTexture(r_bloomstate.texture_screen);
2909                 if (r_bloomstate.texture_bloom)
2910                         R_FreeTexture(r_bloomstate.texture_bloom);
2911                 memset(&r_bloomstate, 0, sizeof(r_bloomstate));
2912                 return;
2913         }
2914
2915         r_bloomstate.enabled = true;
2916         r_bloomstate.hdr = r_hdr.integer != 0;
2917
2918         // allocate textures as needed
2919         if (r_bloomstate.screentexturewidth != screentexturewidth || r_bloomstate.screentextureheight != screentextureheight)
2920         {
2921                 if (r_bloomstate.texture_screen)
2922                         R_FreeTexture(r_bloomstate.texture_screen);
2923                 r_bloomstate.texture_screen = NULL;
2924                 r_bloomstate.screentexturewidth = screentexturewidth;
2925                 r_bloomstate.screentextureheight = screentextureheight;
2926                 if (r_bloomstate.screentexturewidth && r_bloomstate.screentextureheight)
2927                         r_bloomstate.texture_screen = R_LoadTexture2D(r_main_texturepool, "screen", r_bloomstate.screentexturewidth, r_bloomstate.screentextureheight, NULL, TEXTYPE_BGRA, TEXF_FORCENEAREST | TEXF_CLAMP | TEXF_ALWAYSPRECACHE, NULL);
2928         }
2929         if (r_bloomstate.bloomtexturewidth != bloomtexturewidth || r_bloomstate.bloomtextureheight != bloomtextureheight)
2930         {
2931                 if (r_bloomstate.texture_bloom)
2932                         R_FreeTexture(r_bloomstate.texture_bloom);
2933                 r_bloomstate.texture_bloom = NULL;
2934                 r_bloomstate.bloomtexturewidth = bloomtexturewidth;
2935                 r_bloomstate.bloomtextureheight = bloomtextureheight;
2936                 if (r_bloomstate.bloomtexturewidth && r_bloomstate.bloomtextureheight)
2937                         r_bloomstate.texture_bloom = R_LoadTexture2D(r_main_texturepool, "bloom", r_bloomstate.bloomtexturewidth, r_bloomstate.bloomtextureheight, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_CLAMP | TEXF_ALWAYSPRECACHE, NULL);
2938         }
2939
2940         // set up a texcoord array for the full resolution screen image
2941         // (we have to keep this around to copy back during final render)
2942         r_bloomstate.screentexcoord2f[0] = 0;
2943         r_bloomstate.screentexcoord2f[1] = (float)r_view.height / (float)r_bloomstate.screentextureheight;
2944         r_bloomstate.screentexcoord2f[2] = (float)r_view.width / (float)r_bloomstate.screentexturewidth;
2945         r_bloomstate.screentexcoord2f[3] = (float)r_view.height / (float)r_bloomstate.screentextureheight;
2946         r_bloomstate.screentexcoord2f[4] = (float)r_view.width / (float)r_bloomstate.screentexturewidth;
2947         r_bloomstate.screentexcoord2f[5] = 0;
2948         r_bloomstate.screentexcoord2f[6] = 0;
2949         r_bloomstate.screentexcoord2f[7] = 0;
2950
2951         // set up a texcoord array for the reduced resolution bloom image
2952         // (which will be additive blended over the screen image)
2953         r_bloomstate.bloomtexcoord2f[0] = 0;
2954         r_bloomstate.bloomtexcoord2f[1] = (float)r_bloomstate.bloomheight / (float)r_bloomstate.bloomtextureheight;
2955         r_bloomstate.bloomtexcoord2f[2] = (float)r_bloomstate.bloomwidth / (float)r_bloomstate.bloomtexturewidth;
2956         r_bloomstate.bloomtexcoord2f[3] = (float)r_bloomstate.bloomheight / (float)r_bloomstate.bloomtextureheight;
2957         r_bloomstate.bloomtexcoord2f[4] = (float)r_bloomstate.bloomwidth / (float)r_bloomstate.bloomtexturewidth;
2958         r_bloomstate.bloomtexcoord2f[5] = 0;
2959         r_bloomstate.bloomtexcoord2f[6] = 0;
2960         r_bloomstate.bloomtexcoord2f[7] = 0;
2961 }
2962
2963 void R_Bloom_CopyScreenTexture(float colorscale)
2964 {
2965         r_refdef.stats.bloom++;
2966
2967         R_ResetViewRendering2D();
2968         R_Mesh_VertexPointer(r_screenvertex3f, 0, 0);
2969         R_Mesh_ColorPointer(NULL, 0, 0);
2970         R_Mesh_TexCoordPointer(0, 2, r_bloomstate.screentexcoord2f, 0, 0);
2971         R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_screen));
2972
2973         // copy view into the screen texture
2974         GL_ActiveTexture(0);
2975         CHECKGLERROR
2976         qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_view.height), r_view.width, r_view.height);CHECKGLERROR
2977         r_refdef.stats.bloom_copypixels += r_view.width * r_view.height;
2978
2979         // now scale it down to the bloom texture size
2980         CHECKGLERROR
2981         qglViewport(r_view.x, vid.height - (r_view.y + r_bloomstate.bloomheight), r_bloomstate.bloomwidth, r_bloomstate.bloomheight);CHECKGLERROR
2982         GL_BlendFunc(GL_ONE, GL_ZERO);
2983         GL_Color(colorscale, colorscale, colorscale, 1);
2984         // TODO: optimize with multitexture or GLSL
2985         R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
2986         r_refdef.stats.bloom_drawpixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
2987
2988         // we now have a bloom image in the framebuffer
2989         // copy it into the bloom image texture for later processing
2990         R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
2991         GL_ActiveTexture(0);
2992         CHECKGLERROR
2993         qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_bloomstate.bloomheight), r_bloomstate.bloomwidth, r_bloomstate.bloomheight);CHECKGLERROR
2994         r_refdef.stats.bloom_copypixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
2995 }
2996
2997 void R_Bloom_CopyHDRTexture(void)
2998 {
2999         R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3000         GL_ActiveTexture(0);
3001         CHECKGLERROR
3002         qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_view.height), r_view.width, r_view.height);CHECKGLERROR
3003         r_refdef.stats.bloom_copypixels += r_view.width * r_view.height;
3004 }
3005
3006 void R_Bloom_MakeTexture(void)
3007 {
3008         int x, range, dir;
3009         float xoffset, yoffset, r, brighten;
3010
3011         r_refdef.stats.bloom++;
3012
3013         R_ResetViewRendering2D();
3014         R_Mesh_VertexPointer(r_screenvertex3f, 0, 0);
3015         R_Mesh_ColorPointer(NULL, 0, 0);
3016
3017         // we have a bloom image in the framebuffer
3018         CHECKGLERROR
3019         qglViewport(r_view.x, vid.height - (r_view.y + r_bloomstate.bloomheight), r_bloomstate.bloomwidth, r_bloomstate.bloomheight);CHECKGLERROR
3020
3021         for (x = 1;x < min(r_bloom_colorexponent.value, 32);)
3022         {
3023                 x *= 2;
3024                 r = bound(0, r_bloom_colorexponent.value / x, 1);
3025                 GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
3026                 GL_Color(r, r, r, 1);
3027                 R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3028                 R_Mesh_TexCoordPointer(0, 2, r_bloomstate.bloomtexcoord2f, 0, 0);
3029                 R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3030                 r_refdef.stats.bloom_drawpixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3031
3032                 // copy the vertically blurred bloom view to a texture
3033                 GL_ActiveTexture(0);
3034                 CHECKGLERROR
3035                 qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_bloomstate.bloomheight), r_bloomstate.bloomwidth, r_bloomstate.bloomheight);CHECKGLERROR
3036                 r_refdef.stats.bloom_copypixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3037         }
3038
3039         range = r_bloom_blur.integer * r_bloomstate.bloomwidth / 320;
3040         brighten = r_bloom_brighten.value;
3041         if (r_hdr.integer)
3042                 brighten *= r_hdr_range.value;
3043         R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3044         R_Mesh_TexCoordPointer(0, 2, r_bloomstate.offsettexcoord2f, 0, 0);
3045
3046         for (dir = 0;dir < 2;dir++)
3047         {
3048                 // blend on at multiple vertical offsets to achieve a vertical blur
3049                 // TODO: do offset blends using GLSL
3050                 GL_BlendFunc(GL_ONE, GL_ZERO);
3051                 for (x = -range;x <= range;x++)
3052                 {
3053                         if (!dir){xoffset = 0;yoffset = x;}
3054                         else {xoffset = x;yoffset = 0;}
3055                         xoffset /= (float)r_bloomstate.bloomtexturewidth;
3056                         yoffset /= (float)r_bloomstate.bloomtextureheight;
3057                         // compute a texcoord array with the specified x and y offset
3058                         r_bloomstate.offsettexcoord2f[0] = xoffset+0;
3059                         r_bloomstate.offsettexcoord2f[1] = yoffset+(float)r_bloomstate.bloomheight / (float)r_bloomstate.bloomtextureheight;
3060                         r_bloomstate.offsettexcoord2f[2] = xoffset+(float)r_bloomstate.bloomwidth / (float)r_bloomstate.bloomtexturewidth;
3061                         r_bloomstate.offsettexcoord2f[3] = yoffset+(float)r_bloomstate.bloomheight / (float)r_bloomstate.bloomtextureheight;
3062                         r_bloomstate.offsettexcoord2f[4] = xoffset+(float)r_bloomstate.bloomwidth / (float)r_bloomstate.bloomtexturewidth;
3063                         r_bloomstate.offsettexcoord2f[5] = yoffset+0;
3064                         r_bloomstate.offsettexcoord2f[6] = xoffset+0;
3065                         r_bloomstate.offsettexcoord2f[7] = yoffset+0;
3066                         // this r value looks like a 'dot' particle, fading sharply to
3067                         // black at the edges
3068                         // (probably not realistic but looks good enough)
3069                         //r = ((range*range+1)/((float)(x*x+1)))/(range*2+1);
3070                         //r = (dir ? 1.0f : brighten)/(range*2+1);
3071                         r = (dir ? 1.0f : brighten)/(range*2+1)*(1 - x*x/(float)(range*range));
3072                         GL_Color(r, r, r, 1);
3073                         R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3074                         r_refdef.stats.bloom_drawpixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3075                         GL_BlendFunc(GL_ONE, GL_ONE);
3076                 }
3077
3078                 // copy the vertically blurred bloom view to a texture
3079                 GL_ActiveTexture(0);
3080                 CHECKGLERROR
3081                 qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_bloomstate.bloomheight), r_bloomstate.bloomwidth, r_bloomstate.bloomheight);CHECKGLERROR
3082                 r_refdef.stats.bloom_copypixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3083         }
3084
3085         // apply subtract last
3086         // (just like it would be in a GLSL shader)
3087         if (r_bloom_colorsubtract.value > 0 && gl_support_ext_blend_subtract)
3088         {
3089                 GL_BlendFunc(GL_ONE, GL_ZERO);
3090                 R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3091                 R_Mesh_TexCoordPointer(0, 2, r_bloomstate.bloomtexcoord2f, 0, 0);
3092                 GL_Color(1, 1, 1, 1);
3093                 R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3094                 r_refdef.stats.bloom_drawpixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3095
3096                 GL_BlendFunc(GL_ONE, GL_ONE);
3097                 qglBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT_EXT);
3098                 R_Mesh_TexBind(0, R_GetTexture(r_texture_white));
3099                 R_Mesh_TexCoordPointer(0, 2, r_bloomstate.bloomtexcoord2f, 0, 0);
3100                 GL_Color(r_bloom_colorsubtract.value, r_bloom_colorsubtract.value, r_bloom_colorsubtract.value, 1);
3101                 R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3102                 r_refdef.stats.bloom_drawpixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3103                 qglBlendEquationEXT(GL_FUNC_ADD_EXT);
3104
3105                 // copy the darkened bloom view to a texture
3106                 R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3107                 GL_ActiveTexture(0);
3108                 CHECKGLERROR
3109                 qglCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, r_view.x, vid.height - (r_view.y + r_bloomstate.bloomheight), r_bloomstate.bloomwidth, r_bloomstate.bloomheight);CHECKGLERROR
3110                 r_refdef.stats.bloom_copypixels += r_bloomstate.bloomwidth * r_bloomstate.bloomheight;
3111         }
3112 }
3113
3114 void R_HDR_RenderBloomTexture(void)
3115 {
3116         int oldwidth, oldheight;
3117
3118         oldwidth = r_view.width;
3119         oldheight = r_view.height;
3120         r_view.width = r_bloomstate.bloomwidth;
3121         r_view.height = r_bloomstate.bloomheight;
3122
3123         // TODO: support GL_EXT_framebuffer_object rather than reusing the framebuffer?  it might improve SLI performance.
3124         // TODO: add exposure compensation features
3125         // TODO: add fp16 framebuffer support
3126
3127         r_view.showdebug = false;
3128         r_view.colorscale = r_bloom_colorscale.value * r_hdr_scenebrightness.value;
3129         if (r_hdr.integer)
3130                 r_view.colorscale /= r_hdr_range.value;
3131         r_waterstate.numwaterplanes = 0;
3132         R_RenderScene(r_waterstate.enabled);
3133         r_view.showdebug = true;
3134
3135         R_ResetViewRendering2D();
3136
3137         R_Bloom_CopyHDRTexture();
3138         R_Bloom_MakeTexture();
3139
3140         R_ResetViewRendering3D();
3141
3142         R_ClearScreen();
3143         if (r_timereport_active)
3144                 R_TimeReport("viewclear");
3145
3146         // restore the view settings
3147         r_view.width = oldwidth;
3148         r_view.height = oldheight;
3149 }
3150
3151 static void R_BlendView(void)
3152 {
3153         if (r_bloomstate.enabled && r_bloomstate.hdr)
3154         {
3155                 // render high dynamic range bloom effect
3156                 // the bloom texture was made earlier this render, so we just need to
3157                 // blend it onto the screen...
3158                 R_ResetViewRendering2D();
3159                 R_Mesh_VertexPointer(r_screenvertex3f, 0, 0);
3160                 R_Mesh_ColorPointer(NULL, 0, 0);
3161                 GL_Color(1, 1, 1, 1);
3162                 GL_BlendFunc(GL_ONE, GL_ONE);
3163                 R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3164                 R_Mesh_TexCoordPointer(0, 2, r_bloomstate.bloomtexcoord2f, 0, 0);
3165                 R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3166                 r_refdef.stats.bloom_drawpixels += r_view.width * r_view.height;
3167         }
3168         else if (r_bloomstate.enabled)
3169         {
3170                 // render simple bloom effect
3171                 // copy the screen and shrink it and darken it for the bloom process
3172                 R_Bloom_CopyScreenTexture(r_bloom_colorscale.value);
3173                 // make the bloom texture
3174                 R_Bloom_MakeTexture();
3175                 // put the original screen image back in place and blend the bloom
3176                 // texture on it
3177                 R_ResetViewRendering2D();
3178                 R_Mesh_VertexPointer(r_screenvertex3f, 0, 0);
3179                 R_Mesh_ColorPointer(NULL, 0, 0);
3180                 GL_Color(1, 1, 1, 1);
3181                 GL_BlendFunc(GL_ONE, GL_ZERO);
3182                 // do both in one pass if possible
3183                 R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_bloom));
3184                 R_Mesh_TexCoordPointer(0, 2, r_bloomstate.bloomtexcoord2f, 0, 0);
3185                 if (r_textureunits.integer >= 2 && gl_combine.integer)
3186                 {
3187                         R_Mesh_TexCombine(1, GL_ADD, GL_ADD, 1, 1);
3188                         R_Mesh_TexBind(1, R_GetTexture(r_bloomstate.texture_screen));
3189                         R_Mesh_TexCoordPointer(1, 2, r_bloomstate.screentexcoord2f, 0, 0);
3190                 }
3191                 else
3192                 {
3193                         R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3194                         r_refdef.stats.bloom_drawpixels += r_view.width * r_view.height;
3195                         // now blend on the bloom texture
3196                         GL_BlendFunc(GL_ONE, GL_ONE);
3197                         R_Mesh_TexBind(0, R_GetTexture(r_bloomstate.texture_screen));
3198                         R_Mesh_TexCoordPointer(0, 2, r_bloomstate.screentexcoord2f, 0, 0);
3199                 }
3200                 R_Mesh_Draw(0, 4, 2, polygonelements, 0, 0);
3201                 r_refdef.stats.bloom_drawpixels += r_view.width * r_view.height;
3202         }
3203         if (r_refdef.viewblend[3] >= (1.0f / 256.0f))
3204         {
3205                 // apply a color tint to the whole view
3206                 R_ResetViewRendering2D();