added R_Mesh_Draw_ShowTris function which draws a triangle mesh as lines
[divverent/darkplaces.git] / glquake.h
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19 */
20
21 #ifndef GLQUAKE_H
22 #define GLQUAKE_H
23
24 // disable data conversion warnings
25
26 #ifdef _MSC_VER
27 #pragma warning(disable : 4244)     // LordHavoc: MSVC++ 4 x86, double/float
28 #pragma warning(disable : 4305)         // LordHavoc: MSVC++ 6 x86, double/float
29 #endif
30
31
32 //====================================================
33
34 // wgl uses APIENTRY
35 #ifndef APIENTRY
36 #define APIENTRY
37 #endif
38
39 // for platforms (wgl) that do not use GLAPIENTRY
40 #ifndef GLAPIENTRY
41 #define GLAPIENTRY APIENTRY
42 #endif
43
44 #ifndef GL_PROJECTION
45 typedef unsigned int GLenum;
46 typedef unsigned char GLboolean;
47 typedef unsigned int GLbitfield;
48 typedef void GLvoid;
49 // 1-byte signed
50 typedef signed char GLbyte;
51 // 2-byte signed
52 typedef short GLshort;
53 // 4-byte signed
54 typedef int GLint;
55 // 1-byte unsigned
56 typedef unsigned char GLubyte;
57 // 2-byte unsigned
58 typedef unsigned short GLushort;
59 // 4-byte unsigned
60 typedef unsigned int GLuint;
61 // 4-byte signed
62 typedef int GLsizei;
63 // single precision float
64 typedef float GLfloat;
65 // single precision float in [0,1]
66 typedef float GLclampf;
67 // double precision float
68 typedef double GLdouble;
69 // double precision float in [0,1]
70 typedef double GLclampd;
71
72 #define GL_MODELVIEW                            0x1700
73 #define GL_PROJECTION                           0x1701
74 #define GL_TEXTURE                              0x1702
75 #define GL_MATRIX_MODE                          0x0BA0
76 #define GL_MODELVIEW_MATRIX                     0x0BA6
77 #define GL_PROJECTION_MATRIX                    0x0BA7
78 #define GL_TEXTURE_MATRIX                       0x0BA8
79
80 #define GL_DEPTH_TEST                           0x0B71
81
82 #define GL_CULL_FACE                            0x0B44
83
84 #define GL_BLEND                                0x0BE2
85
86 #define GL_ZERO                                 0x0
87 #define GL_ONE                                  0x1
88 #define GL_SRC_COLOR                            0x0300
89 #define GL_ONE_MINUS_SRC_COLOR                  0x0301
90 #define GL_DST_COLOR                            0x0306
91 #define GL_ONE_MINUS_DST_COLOR                  0x0307
92 #define GL_SRC_ALPHA                            0x0302
93 #define GL_ONE_MINUS_SRC_ALPHA                  0x0303
94 #define GL_DST_ALPHA                            0x0304
95 #define GL_ONE_MINUS_DST_ALPHA                  0x0305
96 #define GL_SRC_ALPHA_SATURATE                   0x0308
97 #define GL_CONSTANT_COLOR                       0x8001
98 #define GL_ONE_MINUS_CONSTANT_COLOR             0x8002
99 #define GL_CONSTANT_ALPHA                       0x8003
100 #define GL_ONE_MINUS_CONSTANT_ALPHA             0x8004
101
102 #define GL_TEXTURE_ENV                          0x2300
103 #define GL_TEXTURE_ENV_MODE                     0x2200
104 #define GL_TEXTURE_1D                           0x0DE0
105 #define GL_TEXTURE_2D                           0x0DE1
106 #define GL_TEXTURE_WRAP_S                       0x2802
107 #define GL_TEXTURE_WRAP_T                       0x2803
108 #define GL_TEXTURE_WRAP_R                       0x8072
109 #define GL_TEXTURE_BORDER_COLOR                 0x1004
110 #define GL_TEXTURE_MAG_FILTER                   0x2800
111 #define GL_TEXTURE_MIN_FILTER                   0x2801
112 #define GL_UNPACK_ALIGNMENT                     0x0CF5
113 #define GL_TEXTURE_BINDING_1D                   0x8068
114 #define GL_TEXTURE_BINDING_2D                   0x8069
115
116 #define GL_NEAREST                              0x2600
117 #define GL_LINEAR                               0x2601
118 #define GL_NEAREST_MIPMAP_NEAREST               0x2700
119 #define GL_NEAREST_MIPMAP_LINEAR                0x2702
120 #define GL_LINEAR_MIPMAP_NEAREST                0x2701
121 #define GL_LINEAR_MIPMAP_LINEAR                 0x2703
122
123 extern int gl_support_anisotropy;
124 #define GL_TEXTURE_MAX_ANISOTROPY_EXT           0x84FE
125 #define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT       0x84FF
126
127 #define GL_DECAL                                0x2101
128 #define GL_MODULATE                             0x2100
129
130 #define GL_REPEAT                               0x2901
131 #define GL_CLAMP                                0x2900
132
133 #define GL_POINTS                               0x0000
134 #define GL_LINES                                0x0001
135 #define GL_LINE_LOOP                    0x0002
136 #define GL_LINE_STRIP                   0x0003
137 #define GL_TRIANGLES                    0x0004
138 #define GL_TRIANGLE_STRIP               0x0005
139 #define GL_TRIANGLE_FAN                 0x0006
140 #define GL_QUADS                                0x0007
141 #define GL_QUAD_STRIP                   0x0008
142 #define GL_POLYGON                              0x0009
143
144 #define GL_FALSE                                0x0
145 #define GL_TRUE                                 0x1
146
147 #define GL_BYTE                                 0x1400
148 #define GL_UNSIGNED_BYTE                        0x1401
149 #define GL_SHORT                                0x1402
150 #define GL_UNSIGNED_SHORT                       0x1403
151 #define GL_INT                                  0x1404
152 #define GL_UNSIGNED_INT                         0x1405
153 #define GL_FLOAT                                0x1406
154 #define GL_DOUBLE                               0x140A
155 #define GL_2_BYTES                              0x1407
156 #define GL_3_BYTES                              0x1408
157 #define GL_4_BYTES                              0x1409
158
159 #define GL_VERTEX_ARRAY                         0x8074
160 #define GL_NORMAL_ARRAY                         0x8075
161 #define GL_COLOR_ARRAY                          0x8076
162 //#define GL_INDEX_ARRAY                                0x8077
163 #define GL_TEXTURE_COORD_ARRAY                  0x8078
164 //#define GL_EDGE_FLAG_ARRAY                    0x8079
165
166 #define GL_FRONT                                0x0404
167 #define GL_BACK                                 0x0405
168
169 #define GL_VENDOR                               0x1F00
170 #define GL_RENDERER                             0x1F01
171 #define GL_VERSION                              0x1F02
172 #define GL_EXTENSIONS                           0x1F03
173
174 #define GL_NO_ERROR                             0x0
175 #define GL_INVALID_VALUE                        0x0501
176 #define GL_INVALID_ENUM                         0x0500
177 #define GL_INVALID_OPERATION                    0x0502
178 #define GL_STACK_OVERFLOW                       0x0503
179 #define GL_STACK_UNDERFLOW                      0x0504
180 #define GL_OUT_OF_MEMORY                        0x0505
181
182 #define GL_DITHER                               0x0BD0
183 #define GL_RGB                                  0x1907
184 #define GL_RGBA                                 0x1908
185
186 #define GL_MAX_TEXTURE_SIZE                     0x0D33
187
188 #define GL_NEVER                                0x0200
189 #define GL_LESS                                 0x0201
190 #define GL_EQUAL                                0x0202
191 #define GL_LEQUAL                               0x0203
192 #define GL_GREATER                              0x0204
193 #define GL_NOTEQUAL                             0x0205
194 #define GL_GEQUAL                               0x0206
195 #define GL_ALWAYS                               0x0207
196 #define GL_DEPTH_TEST                           0x0B71
197
198 #define GL_RED_SCALE                            0x0D14
199 #define GL_GREEN_SCALE                          0x0D18
200 #define GL_BLUE_SCALE                           0x0D1A
201 #define GL_ALPHA_SCALE                          0x0D1C
202
203 #define GL_DEPTH_BUFFER_BIT                     0x00000100
204 #define GL_ACCUM_BUFFER_BIT                     0x00000200
205 #define GL_STENCIL_BUFFER_BIT                   0x00000400
206 #define GL_COLOR_BUFFER_BIT                     0x00004000
207
208 #define GL_STENCIL_TEST                         0x0B90
209 #define GL_KEEP                                 0x1E00
210 #define GL_REPLACE                              0x1E01
211 #define GL_INCR                                 0x1E02
212 #define GL_DECR                                 0x1E03
213
214 #define GL_POLYGON_OFFSET_FACTOR          0x8038
215 #define GL_POLYGON_OFFSET_UNITS           0x2A00
216 #define GL_POLYGON_OFFSET_POINT           0x2A01
217 #define GL_POLYGON_OFFSET_LINE            0x2A02
218 #define GL_POLYGON_OFFSET_FILL            0x8037
219 #endif
220
221 // GL_ARB_multitexture
222 extern int gl_textureunits;
223 extern void (GLAPIENTRY *qglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
224 extern void (GLAPIENTRY *qglMultiTexCoord3f) (GLenum, GLfloat, GLfloat, GLfloat);
225 extern void (GLAPIENTRY *qglActiveTexture) (GLenum);
226 extern void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
227 #ifndef GL_ACTIVE_TEXTURE_ARB
228 #define GL_ACTIVE_TEXTURE_ARB                   0x84E0
229 #define GL_CLIENT_ACTIVE_TEXTURE_ARB    0x84E1
230 #define GL_MAX_TEXTURE_UNITS_ARB                0x84E2
231 #define GL_TEXTURE0_ARB                                 0x84C0
232 #define GL_TEXTURE1_ARB                                 0x84C1
233 #define GL_TEXTURE2_ARB                                 0x84C2
234 #define GL_TEXTURE3_ARB                                 0x84C3
235 #define GL_TEXTURE4_ARB                                 0x84C4
236 #define GL_TEXTURE5_ARB                                 0x84C5
237 #define GL_TEXTURE6_ARB                                 0x84C6
238 #define GL_TEXTURE7_ARB                                 0x84C7
239 #define GL_TEXTURE8_ARB                                 0x84C8
240 #define GL_TEXTURE9_ARB                                 0x84C9
241 #define GL_TEXTURE10_ARB                                0x84CA
242 #define GL_TEXTURE11_ARB                                0x84CB
243 #define GL_TEXTURE12_ARB                                0x84CC
244 #define GL_TEXTURE13_ARB                                0x84CD
245 #define GL_TEXTURE14_ARB                                0x84CE
246 #define GL_TEXTURE15_ARB                                0x84CF
247 #define GL_TEXTURE16_ARB                                0x84D0
248 #define GL_TEXTURE17_ARB                                0x84D1
249 #define GL_TEXTURE18_ARB                                0x84D2
250 #define GL_TEXTURE19_ARB                                0x84D3
251 #define GL_TEXTURE20_ARB                                0x84D4
252 #define GL_TEXTURE21_ARB                                0x84D5
253 #define GL_TEXTURE22_ARB                                0x84D6
254 #define GL_TEXTURE23_ARB                                0x84D7
255 #define GL_TEXTURE24_ARB                                0x84D8
256 #define GL_TEXTURE25_ARB                                0x84D9
257 #define GL_TEXTURE26_ARB                                0x84DA
258 #define GL_TEXTURE27_ARB                                0x84DB
259 #define GL_TEXTURE28_ARB                                0x84DC
260 #define GL_TEXTURE29_ARB                                0x84DD
261 #define GL_TEXTURE30_ARB                                0x84DE
262 #define GL_TEXTURE31_ARB                                0x84DF
263 #endif
264
265 // GL_EXT_compiled_vertex_array
266 extern int gl_supportslockarrays;
267 extern void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
268 extern void (GLAPIENTRY *qglUnlockArraysEXT) (void);
269
270 // GL_ARB_texture_env_combine
271 extern int gl_combine_extension;
272 #ifndef GL_COMBINE_ARB
273 #define GL_COMBINE_ARB                                  0x8570
274 #define GL_COMBINE_RGB_ARB                              0x8571
275 #define GL_COMBINE_ALPHA_ARB                    0x8572
276 #define GL_SOURCE0_RGB_ARB                              0x8580
277 #define GL_SOURCE1_RGB_ARB                              0x8581
278 #define GL_SOURCE2_RGB_ARB                              0x8582
279 #define GL_SOURCE0_ALPHA_ARB                    0x8588
280 #define GL_SOURCE1_ALPHA_ARB                    0x8589
281 #define GL_SOURCE2_ALPHA_ARB                    0x858A
282 #define GL_OPERAND0_RGB_ARB                             0x8590
283 #define GL_OPERAND1_RGB_ARB                             0x8591
284 #define GL_OPERAND2_RGB_ARB                             0x8592
285 #define GL_OPERAND0_ALPHA_ARB                   0x8598
286 #define GL_OPERAND1_ALPHA_ARB                   0x8599
287 #define GL_OPERAND2_ALPHA_ARB                   0x859A
288 #define GL_RGB_SCALE_ARB                                0x8573
289 #define GL_ADD_SIGNED_ARB                               0x8574
290 #define GL_INTERPOLATE_ARB                              0x8575
291 #define GL_SUBTRACT_ARB                                 0x84E7
292 #define GL_CONSTANT_ARB                                 0x8576
293 #define GL_PRIMARY_COLOR_ARB                    0x8577
294 #define GL_PREVIOUS_ARB                                 0x8578
295 #endif
296
297 #ifndef GL_MAX_ELEMENTS_VERTICES
298 #define GL_MAX_ELEMENTS_VERTICES                0x80E8
299 #endif
300 #ifndef GL_MAX_ELEMENTS_INDICES
301 #define GL_MAX_ELEMENTS_INDICES                 0x80E9
302 #endif
303
304 extern cvar_t gl_combine;
305
306 extern int gl_textureshader;
307 #ifndef GL_TEXTURE_SHADER_NV
308 #define GL_TEXTURE_SHADER_NV                    0x86DE
309 #define GL_SHADER_OPERATION_NV                  0x86DF
310 #define GL_OFFSET_TEXTURE_MATRIX_NV             0x86E1
311 #define GL_PREVIOUS_TEXTURE_INPUT_NV    0x86E4
312 #define GL_OFFSET_TEXTURE_2D_NV                 0x86E8
313 #define GL_DSDT_NV                                              0x86F5
314 #define GL_DSDT8_NV                                             0x8709
315 #endif
316
317 extern int gl_texture3d;
318 #ifndef GL_TEXTURE_3D
319 #define GL_PACK_SKIP_IMAGES                     0x806B
320 #define GL_PACK_IMAGE_HEIGHT                    0x806C
321 #define GL_UNPACK_SKIP_IMAGES                   0x806D
322 #define GL_UNPACK_IMAGE_HEIGHT                  0x806E
323 #define GL_TEXTURE_3D                           0x806F
324 #define GL_PROXY_TEXTURE_3D                     0x8070
325 #define GL_TEXTURE_DEPTH                        0x8071
326 #define GL_TEXTURE_WRAP_R                       0x8072
327 #define GL_MAX_3D_TEXTURE_SIZE                  0x8073
328 #define GL_TEXTURE_BINDING_3D                   0x806A
329 extern void (GLAPIENTRY *qglTexImage3D)(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
330 extern void (GLAPIENTRY *qglTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
331 extern void (GLAPIENTRY *qglCopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
332 #endif
333
334 extern int gl_texturecubemap;
335 #ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
336 #define GL_NORMAL_MAP_ARB                           0x8511
337 #define GL_REFLECTION_MAP_ARB               0x8512
338 #define GL_TEXTURE_CUBE_MAP_ARB             0x8513
339 #define GL_TEXTURE_BINDING_CUBE_MAP_ARB     0x8514
340 #define GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB     0x8515
341 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB     0x8516
342 #define GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB     0x8517
343 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB     0x8518
344 #define GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB     0x8519
345 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB     0x851A
346 #define GL_PROXY_TEXTURE_CUBE_MAP_ARB       0x851B
347 #define GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB                0x851C
348 #endif
349
350 extern int gl_dot3arb;
351 #ifndef GL_DOT3_RGB_ARB
352 #define GL_DOT3_RGB_ARB                         0x86AE
353 #define GL_DOT3_RGBA_ARB                                0x86AF
354 #endif
355
356 /*
357 // uncomment if this is actually needed by anyone
358 extern int gl_dot3ext;
359 #ifndef GL_DOT3_RGB_EXT
360 #define GL_DOT3_RGB_EXT                         0x8740
361 #define GL_DOT3_RGBA_EXT                        0x8741
362 #endif
363 */
364
365 #ifndef GL_SCISSOR_TEST
366 #define GL_SCISSOR_TEST                         0x0C11
367 #define GL_SCISSOR_BOX                          0x0C10
368 #endif
369
370 // GL_SGIS_texture_edge_clamp or GL_EXT_texture_edge_clamp
371 extern int gl_support_clamptoedge;
372 #ifndef GL_CLAMP_TO_EDGE
373 #define GL_CLAMP_TO_EDGE 0x812F
374 #endif
375
376 //GL_NV_vertex_array_range
377 extern GLvoid *(GLAPIENTRY *qglAllocateMemoryNV)(GLsizei size, GLfloat readFrequency, GLfloat writeFrequency, GLfloat priority);
378 extern GLvoid (GLAPIENTRY *qglFreeMemoryNV)(GLvoid *pointer);
379 extern GLvoid (GLAPIENTRY *qglVertexArrayRangeNV)(GLsizei length, GLvoid *pointer);
380 extern GLvoid (GLAPIENTRY *qglFlushVertexArrayRangeNV)(GLvoid);
381 #define GL_VERTEX_ARRAY_RANGE_NV 0x851D
382 #define GL_VERTEX_ARRAY_RANGE_LENGTH_NV 0x851E
383 #define GL_MAX_VERTEX_ARRAY_RANGE_ELEMENT_NV 0x8520
384 #define GL_VERTEX_ARRAY_RANGE_POINTER_NV 0x8521
385 extern int gl_support_var;
386
387 //GL_NV_vertex_array_range2
388 #define GL_VERTEX_ARRAY_RANGE_WITHOUT_FLUSH_NV 0x8533
389 extern int gl_support_var2;
390
391
392 extern void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
393
394 extern void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
395
396 extern void (GLAPIENTRY *qglClear)(GLbitfield mask);
397
398 //extern void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
399 extern void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
400 extern void (GLAPIENTRY *qglCullFace)(GLenum mode);
401
402 //extern void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
403 //extern void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
404 extern void (GLAPIENTRY *qglEnable)(GLenum cap);
405 extern void (GLAPIENTRY *qglDisable)(GLenum cap);
406 extern GLboolean (GLAPIENTRY *qglIsEnabled)(GLenum cap);
407
408 extern void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
409 extern void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
410
411 //extern void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
412 //extern void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
413 //extern void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
414 extern void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
415
416 extern GLenum (GLAPIENTRY *qglGetError)(void);
417 extern const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
418 extern void (GLAPIENTRY *qglFinish)(void);
419 extern void (GLAPIENTRY *qglFlush)(void);
420
421 extern void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
422 extern void (GLAPIENTRY *qglDepthFunc)(GLenum func);
423 extern void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
424 extern void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
425 extern void (GLAPIENTRY *qglColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
426
427 extern void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
428 extern void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
429 extern void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
430 extern void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
431 extern void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
432 extern void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
433 extern void (GLAPIENTRY *qglArrayElement)(GLint i);
434
435 extern void (GLAPIENTRY *qglColor4f)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
436 extern void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
437 extern void (GLAPIENTRY *qglTexCoord3f)(GLfloat s, GLfloat t, GLfloat r);
438 extern void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
439 extern void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
440 extern void (GLAPIENTRY *qglBegin)(GLenum mode);
441 extern void (GLAPIENTRY *qglEnd)(void);
442
443 extern void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
444 extern void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
445 extern void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
446 extern void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
447 //extern void (GLAPIENTRY *qglPushMatrix)(void);
448 //extern void (GLAPIENTRY *qglPopMatrix)(void);
449 extern void (GLAPIENTRY *qglLoadIdentity)(void);
450 //extern void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
451 extern void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
452 //extern void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
453 //extern void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
454 //extern void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
455 //extern void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
456 //extern void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
457 //extern void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
458 //extern void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
459 //extern void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
460
461 extern void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
462
463 extern void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
464 extern void (GLAPIENTRY *qglStencilMask)(GLuint mask);
465 extern void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
466 extern void (GLAPIENTRY *qglClearStencil)(GLint s);
467
468 //extern void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
469 extern void (GLAPIENTRY *qglTexEnvfv)(GLenum target, GLenum pname, const GLfloat *params);
470 extern void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
471 extern void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
472 //extern void (GLAPIENTRY *qglTexParameterfv)(GLenum target, GLenum pname, GLfloat *params);
473 extern void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
474
475 extern void (GLAPIENTRY *qglGenTextures)(GLsizei n, GLuint *textures);
476 extern void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
477 extern void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
478 //extern void (GLAPIENTRY *qglPrioritizeTextures)(GLsizei n, const GLuint *textures, const GLclampf *priorities);
479 //extern GLboolean (GLAPIENTRY *qglAreTexturesResident)(GLsizei n, const GLuint *textures, GLboolean *residences);
480 extern GLboolean (GLAPIENTRY *qglIsTexture)(GLuint texture);
481 //extern void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
482 extern void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
483
484 extern void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
485 extern void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
486 extern void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
487 extern void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
488 extern void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
489 extern void (GLAPIENTRY *qglCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
490 extern void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
491 extern void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
492
493 extern void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
494
495 #if WIN32
496 extern int (WINAPI *qwglChoosePixelFormat)(HDC, CONST PIXELFORMATDESCRIPTOR *);
497 extern int (WINAPI *qwglDescribePixelFormat)(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);
498 //extern int (WINAPI *qwglGetPixelFormat)(HDC);
499 extern BOOL (WINAPI *qwglSetPixelFormat)(HDC, int, CONST PIXELFORMATDESCRIPTOR *);
500 extern BOOL (WINAPI *qwglSwapBuffers)(HDC);
501 extern HGLRC (WINAPI *qwglCreateContext)(HDC);
502 extern BOOL (WINAPI *qwglDeleteContext)(HGLRC);
503 extern PROC (WINAPI *qwglGetProcAddress)(LPCSTR);
504 extern BOOL (WINAPI *qwglMakeCurrent)(HDC, HGLRC);
505 extern BOOL (WINAPI *qwglSwapIntervalEXT)(int interval);
506 #endif
507
508 #define DEBUGGL
509
510 #ifdef DEBUGGL
511 #define CHECKGLERROR {if (gl_printcheckerror.integer) Con_Printf("CHECKGLERROR at %s:%d\n", __FILE__, __LINE__);if (gl_paranoid.integer && (errornumber = qglGetError())) GL_PrintError(errornumber, __FILE__, __LINE__);}
512 extern int errornumber;
513 void GL_PrintError(int errornumber, char *filename, int linenumber);
514 #else
515 #define CHECKGLERROR
516 #endif
517
518 #endif
519