implemented scissor rect clipping of lights in realtime lighting mode
[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 #pragma warning(disable : 4018)         // LordHavoc: MSVC++ 4 x86, signed/unsigned mismatch
30 #endif
31
32 #ifdef _WIN32
33 #include <windows.h>
34 #define strcasecmp stricmp
35 #define strncasecmp strnicmp
36 #endif
37
38 //#include <GL/gl.h>
39
40 //====================================================
41
42 // wgl uses APIENTRY
43 #ifndef APIENTRY
44 #define APIENTRY
45 #endif
46
47 // for platforms (wgl) that do not use GLAPIENTRY
48 #ifndef GLAPIENTRY
49 #define GLAPIENTRY APIENTRY
50 #endif
51
52 #ifndef GL_PROJECTION
53 typedef unsigned int GLenum;
54 typedef unsigned char GLboolean;
55 typedef unsigned int GLbitfield;
56 typedef void GLvoid;
57 // 1-byte signed
58 typedef signed char GLbyte;
59 // 2-byte signed
60 typedef short GLshort;
61 // 4-byte signed
62 typedef int GLint;
63 // 1-byte unsigned
64 typedef unsigned char GLubyte;
65 // 2-byte unsigned
66 typedef unsigned short GLushort;
67 // 4-byte unsigned
68 typedef unsigned int GLuint;
69 // 4-byte signed
70 typedef int GLsizei;
71 // single precision float
72 typedef float GLfloat;
73 // single precision float in [0,1]
74 typedef float GLclampf;
75 // double precision float
76 typedef double GLdouble;
77 // double precision float in [0,1]
78 typedef double GLclampd;
79
80 #define GL_MODELVIEW                            0x1700
81 #define GL_PROJECTION                           0x1701
82 #define GL_TEXTURE                              0x1702
83 #define GL_MATRIX_MODE                          0x0BA0
84 #define GL_MODELVIEW_MATRIX                     0x0BA6
85 #define GL_PROJECTION_MATRIX                    0x0BA7
86 #define GL_TEXTURE_MATRIX                       0x0BA8
87
88 #define GL_DEPTH_TEST                           0x0B71
89
90 #define GL_CULL_FACE                            0x0B44
91
92 #define GL_BLEND                                0x0BE2
93
94 #define GL_ZERO                                 0x0
95 #define GL_ONE                                  0x1
96 #define GL_SRC_COLOR                            0x0300
97 #define GL_ONE_MINUS_SRC_COLOR                  0x0301
98 #define GL_DST_COLOR                            0x0306
99 #define GL_ONE_MINUS_DST_COLOR                  0x0307
100 #define GL_SRC_ALPHA                            0x0302
101 #define GL_ONE_MINUS_SRC_ALPHA                  0x0303
102 #define GL_DST_ALPHA                            0x0304
103 #define GL_ONE_MINUS_DST_ALPHA                  0x0305
104 #define GL_SRC_ALPHA_SATURATE                   0x0308
105 #define GL_CONSTANT_COLOR                       0x8001
106 #define GL_ONE_MINUS_CONSTANT_COLOR             0x8002
107 #define GL_CONSTANT_ALPHA                       0x8003
108 #define GL_ONE_MINUS_CONSTANT_ALPHA             0x8004
109
110 #define GL_TEXTURE_ENV                          0x2300
111 #define GL_TEXTURE_ENV_MODE                     0x2200
112 #define GL_TEXTURE_1D                           0x0DE0
113 #define GL_TEXTURE_2D                           0x0DE1
114 #define GL_TEXTURE_WRAP_S                       0x2802
115 #define GL_TEXTURE_WRAP_T                       0x2803
116 #define GL_TEXTURE_WRAP_R                       0x8072
117 #define GL_TEXTURE_BORDER_COLOR                 0x1004
118 #define GL_TEXTURE_MAG_FILTER                   0x2800
119 #define GL_TEXTURE_MIN_FILTER                   0x2801
120 #define GL_UNPACK_ALIGNMENT                     0x0CF5
121
122 #define GL_NEAREST                              0x2600
123 #define GL_LINEAR                               0x2601
124 #define GL_NEAREST_MIPMAP_NEAREST               0x2700
125 #define GL_NEAREST_MIPMAP_LINEAR                0x2702
126 #define GL_LINEAR_MIPMAP_NEAREST                0x2701
127 #define GL_LINEAR_MIPMAP_LINEAR                 0x2703
128
129 #define GL_DECAL                                0x2101
130 #define GL_MODULATE                             0x2100
131
132 #define GL_REPEAT                               0x2901
133 #define GL_CLAMP                                0x2900
134
135 #define GL_TRIANGLES                            0x0004
136
137 #define GL_FALSE                                0x0
138 #define GL_TRUE                                 0x1
139
140 #define GL_BYTE                                 0x1400
141 #define GL_UNSIGNED_BYTE                        0x1401
142 #define GL_SHORT                                0x1402
143 #define GL_UNSIGNED_SHORT                       0x1403
144 #define GL_INT                                  0x1404
145 #define GL_UNSIGNED_INT                         0x1405
146 #define GL_FLOAT                                0x1406
147 #define GL_DOUBLE                               0x140A
148 #define GL_2_BYTES                              0x1407
149 #define GL_3_BYTES                              0x1408
150 #define GL_4_BYTES                              0x1409
151
152 #define GL_VERTEX_ARRAY                         0x8074
153 #define GL_NORMAL_ARRAY                         0x8075
154 #define GL_COLOR_ARRAY                          0x8076
155 //#define GL_INDEX_ARRAY                                0x8077
156 #define GL_TEXTURE_COORD_ARRAY                  0x8078
157 //#define GL_EDGE_FLAG_ARRAY                    0x8079
158
159 #define GL_FRONT                                0x0404
160 #define GL_BACK                                 0x0405
161
162 #define GL_VENDOR                               0x1F00
163 #define GL_RENDERER                             0x1F01
164 #define GL_VERSION                              0x1F02
165 #define GL_EXTENSIONS                           0x1F03
166
167 #define GL_NO_ERROR                             0x0
168 #define GL_INVALID_VALUE                        0x0501
169 #define GL_INVALID_ENUM                         0x0500
170 #define GL_INVALID_OPERATION                    0x0502
171 #define GL_STACK_OVERFLOW                       0x0503
172 #define GL_STACK_UNDERFLOW                      0x0504
173 #define GL_OUT_OF_MEMORY                        0x0505
174
175 #define GL_DITHER                               0x0BD0
176 #define GL_RGB                                  0x1907
177 #define GL_RGBA                                 0x1908
178
179 #define GL_MAX_TEXTURE_SIZE                     0x0D33
180
181 #define GL_NEVER                                0x0200
182 #define GL_LESS                                 0x0201
183 #define GL_EQUAL                                0x0202
184 #define GL_LEQUAL                               0x0203
185 #define GL_GREATER                              0x0204
186 #define GL_NOTEQUAL                             0x0205
187 #define GL_GEQUAL                               0x0206
188 #define GL_ALWAYS                               0x0207
189 #define GL_DEPTH_TEST                           0x0B71
190
191 #define GL_RED_SCALE                            0x0D14
192 #define GL_GREEN_SCALE                          0x0D18
193 #define GL_BLUE_SCALE                           0x0D1A
194 #define GL_ALPHA_SCALE                          0x0D1C
195
196 #define GL_DEPTH_BUFFER_BIT                     0x00000100
197 #define GL_ACCUM_BUFFER_BIT                     0x00000200
198 #define GL_STENCIL_BUFFER_BIT                   0x00000400
199 #define GL_COLOR_BUFFER_BIT                     0x00004000
200
201 #define GL_STENCIL_TEST                         0x0B90
202 #define GL_KEEP                                 0x1E00
203 #define GL_REPLACE                              0x1E01
204 #define GL_INCR                                 0x1E02
205 #define GL_DECR                                 0x1E03
206 #endif
207
208 // GL_ARB_multitexture
209 extern int gl_textureunits;
210 extern void (GLAPIENTRY *qglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
211 extern void (GLAPIENTRY *qglActiveTexture) (GLenum);
212 extern void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
213 #ifndef GL_ACTIVE_TEXTURE_ARB
214 #define GL_ACTIVE_TEXTURE_ARB                   0x84E0
215 #define GL_CLIENT_ACTIVE_TEXTURE_ARB    0x84E1
216 #define GL_MAX_TEXTURE_UNITS_ARB                0x84E2
217 #define GL_TEXTURE0_ARB                                 0x84C0
218 #define GL_TEXTURE1_ARB                                 0x84C1
219 #define GL_TEXTURE2_ARB                                 0x84C2
220 #define GL_TEXTURE3_ARB                                 0x84C3
221 #define GL_TEXTURE4_ARB                                 0x84C4
222 #define GL_TEXTURE5_ARB                                 0x84C5
223 #define GL_TEXTURE6_ARB                                 0x84C6
224 #define GL_TEXTURE7_ARB                                 0x84C7
225 #define GL_TEXTURE8_ARB                                 0x84C8
226 #define GL_TEXTURE9_ARB                                 0x84C9
227 #define GL_TEXTURE10_ARB                                0x84CA
228 #define GL_TEXTURE11_ARB                                0x84CB
229 #define GL_TEXTURE12_ARB                                0x84CC
230 #define GL_TEXTURE13_ARB                                0x84CD
231 #define GL_TEXTURE14_ARB                                0x84CE
232 #define GL_TEXTURE15_ARB                                0x84CF
233 #define GL_TEXTURE16_ARB                                0x84D0
234 #define GL_TEXTURE17_ARB                                0x84D1
235 #define GL_TEXTURE18_ARB                                0x84D2
236 #define GL_TEXTURE19_ARB                                0x84D3
237 #define GL_TEXTURE20_ARB                                0x84D4
238 #define GL_TEXTURE21_ARB                                0x84D5
239 #define GL_TEXTURE22_ARB                                0x84D6
240 #define GL_TEXTURE23_ARB                                0x84D7
241 #define GL_TEXTURE24_ARB                                0x84D8
242 #define GL_TEXTURE25_ARB                                0x84D9
243 #define GL_TEXTURE26_ARB                                0x84DA
244 #define GL_TEXTURE27_ARB                                0x84DB
245 #define GL_TEXTURE28_ARB                                0x84DC
246 #define GL_TEXTURE29_ARB                                0x84DD
247 #define GL_TEXTURE30_ARB                                0x84DE
248 #define GL_TEXTURE31_ARB                                0x84DF
249 #endif
250
251 // GL_EXT_compiled_vertex_array
252 extern int gl_supportslockarrays;
253 extern void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
254 extern void (GLAPIENTRY *qglUnlockArraysEXT) (void);
255
256 // GL_ARB_texture_env_combine
257 extern int gl_combine_extension;
258 #ifndef GL_COMBINE_ARB
259 #define GL_COMBINE_ARB                                  0x8570
260 #define GL_COMBINE_RGB_ARB                              0x8571
261 #define GL_COMBINE_ALPHA_ARB                    0x8572
262 #define GL_SOURCE0_RGB_ARB                              0x8580
263 #define GL_SOURCE1_RGB_ARB                              0x8581
264 #define GL_SOURCE2_RGB_ARB                              0x8582
265 #define GL_SOURCE0_ALPHA_ARB                    0x8588
266 #define GL_SOURCE1_ALPHA_ARB                    0x8589
267 #define GL_SOURCE2_ALPHA_ARB                    0x858A
268 #define GL_OPERAND0_RGB_ARB                             0x8590
269 #define GL_OPERAND1_RGB_ARB                             0x8591
270 #define GL_OPERAND2_RGB_ARB                             0x8592
271 #define GL_OPERAND0_ALPHA_ARB                   0x8598
272 #define GL_OPERAND1_ALPHA_ARB                   0x8599
273 #define GL_OPERAND2_ALPHA_ARB                   0x859A
274 #define GL_RGB_SCALE_ARB                                0x8573
275 #define GL_ADD_SIGNED_ARB                               0x8574
276 #define GL_INTERPOLATE_ARB                              0x8575
277 #define GL_SUBTRACT_ARB                                 0x84E7
278 #define GL_CONSTANT_ARB                                 0x8576
279 #define GL_PRIMARY_COLOR_ARB                    0x8577
280 #define GL_PREVIOUS_ARB                                 0x8578
281 #endif
282
283 #ifndef GL_MAX_ELEMENTS_VERTICES
284 #define GL_MAX_ELEMENTS_VERTICES                0x80E8
285 #endif
286 #ifndef GL_MAX_ELEMENTS_INDICES
287 #define GL_MAX_ELEMENTS_INDICES                 0x80E9
288 #endif
289
290 extern cvar_t gl_combine;
291
292 extern int gl_texture3d;
293 #ifndef GL_TEXTURE_3D
294 #define GL_PACK_SKIP_IMAGES                     0x806B
295 #define GL_PACK_IMAGE_HEIGHT                    0x806C
296 #define GL_UNPACK_SKIP_IMAGES                   0x806D
297 #define GL_UNPACK_IMAGE_HEIGHT                  0x806E
298 #define GL_TEXTURE_3D                           0x806F
299 #define GL_PROXY_TEXTURE_3D                     0x8070
300 #define GL_TEXTURE_DEPTH                        0x8071
301 #define GL_TEXTURE_WRAP_R                       0x8072
302 #define GL_MAX_3D_TEXTURE_SIZE                  0x8073
303 #define GL_TEXTURE_BINDING_3D                   0x806A
304 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);
305 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);
306 extern void (GLAPIENTRY *qglCopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
307 #endif
308
309 extern int gl_texturecubemap;
310 #ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
311 #define GL_NORMAL_MAP_ARB                           0x8511
312 #define GL_REFLECTION_MAP_ARB               0x8512
313 #define GL_TEXTURE_CUBE_MAP_ARB             0x8513
314 #define GL_TEXTURE_BINDING_CUBE_MAP_ARB     0x8514
315 #define GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB     0x8515
316 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB     0x8516
317 #define GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB     0x8517
318 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB     0x8518
319 #define GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB     0x8519
320 #define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB     0x851A
321 #define GL_PROXY_TEXTURE_CUBE_MAP_ARB       0x851B
322 #define GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB                0x851C
323 #endif
324
325 extern int gl_dot3arb;
326 #ifndef GL_DOT3_RGB_ARB
327 #define GL_DOT3_RGB_ARB                         0x86AE
328 #define GL_DOT3_RGBA_ARB                                0x86AF
329 #endif
330
331 /*
332 // uncomment if this is actually needed by anyone
333 extern int gl_dot3ext;
334 #ifndef GL_DOT3_RGB_EXT
335 #define GL_DOT3_RGB_EXT                         0x8740
336 #define GL_DOT3_RGBA_EXT                        0x8741
337 #endif
338 */
339
340 #ifndef GL_SCISSOR_TEST
341 #define GL_SCISSOR_TEST                         0x0C11
342 #define GL_SCISSOR_BOX                          0x0C10
343 #endif
344
345 extern void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
346
347 extern void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
348
349 extern void (GLAPIENTRY *qglClear)(GLbitfield mask);
350
351 //extern void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
352 extern void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
353 extern void (GLAPIENTRY *qglCullFace)(GLenum mode);
354
355 extern void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
356 extern void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
357 extern void (GLAPIENTRY *qglEnable)(GLenum cap);
358 extern void (GLAPIENTRY *qglDisable)(GLenum cap);
359 //extern GLboolean GLAPIENTRY *qglIsEnabled)(GLenum cap);
360
361 extern void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
362 extern void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
363
364 extern void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
365 extern void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
366 extern void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
367 extern void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
368
369 extern GLenum (GLAPIENTRY *qglGetError)(void);
370 extern const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
371 extern void (GLAPIENTRY *qglFinish)(void);
372 extern void (GLAPIENTRY *qglFlush)(void);
373
374 extern void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
375 extern void (GLAPIENTRY *qglDepthFunc)(GLenum func);
376 extern void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
377 extern void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
378 extern void (GLAPIENTRY *qglColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
379
380 extern void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
381 extern void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
382 extern void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
383 //extern void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
384 extern void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
385 extern void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
386 extern void (GLAPIENTRY *qglArrayElement)(GLint i);
387
388 extern void (GLAPIENTRY *qglColor4f)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
389 extern void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
390 extern void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
391 extern void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
392 extern void (GLAPIENTRY *qglBegin)(GLenum mode);
393 extern void (GLAPIENTRY *qglEnd)(void);
394
395 extern void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
396 extern void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
397 extern void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
398 extern void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
399 //extern void (GLAPIENTRY *qglPushMatrix)(void);
400 //extern void (GLAPIENTRY *qglPopMatrix)(void);
401 extern void (GLAPIENTRY *qglLoadIdentity)(void);
402 extern void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
403 extern void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
404 //extern void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
405 //extern void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
406 //extern void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
407 extern void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
408 //extern void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
409 //extern void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
410 //extern void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
411 extern void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
412
413 extern void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
414
415 extern void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
416 extern void (GLAPIENTRY *qglStencilMask)(GLuint mask);
417 extern void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
418 extern void (GLAPIENTRY *qglClearStencil)(GLint s);
419
420 extern void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
421 extern void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
422 extern void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
423 extern void (GLAPIENTRY *qglTexParameterfv)(GLenum target, GLenum pname, GLfloat *params);
424 extern void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
425
426 extern void (GLAPIENTRY *qglGenTextures)(GLsizei n, GLuint *textures);
427 extern void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
428 extern void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
429 extern void (GLAPIENTRY *qglPrioritizeTextures)(GLsizei n, const GLuint *textures, const GLclampf *priorities);
430 extern GLboolean (GLAPIENTRY *qglAreTexturesResident)(GLsizei n, const GLuint *textures, GLboolean *residences);
431 extern GLboolean (GLAPIENTRY *qglIsTexture)(GLuint texture);
432 extern void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
433 extern void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
434
435 extern void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
436 extern void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
437 extern void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
438 extern void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
439 extern void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
440 extern void (GLAPIENTRY *qglCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
441 extern void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
442 extern void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
443
444 #if WIN32
445 extern int (WINAPI *qwglChoosePixelFormat)(HDC, CONST PIXELFORMATDESCRIPTOR *);
446 extern int (WINAPI *qwglDescribePixelFormat)(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);
447 //extern int (WINAPI *qwglGetPixelFormat)(HDC);
448 extern BOOL (WINAPI *qwglSetPixelFormat)(HDC, int, CONST PIXELFORMATDESCRIPTOR *);
449 extern BOOL (WINAPI *qwglSwapBuffers)(HDC);
450 extern HGLRC (WINAPI *qwglCreateContext)(HDC);
451 extern BOOL (WINAPI *qwglDeleteContext)(HGLRC);
452 extern PROC (WINAPI *qwglGetProcAddress)(LPCSTR);
453 extern BOOL (WINAPI *qwglMakeCurrent)(HDC, HGLRC);
454 extern BOOL (WINAPI *qwglSwapIntervalEXT)(int interval);
455 #endif
456
457 #define DEBUGGL
458
459 #ifdef DEBUGGL
460 #define CHECKGLERROR if ((errornumber = qglGetError())) GL_PrintError(errornumber, __FILE__, __LINE__);
461 extern int errornumber;
462 void GL_PrintError(int errornumber, char *filename, int linenumber);
463 #else
464 #define CHECKGLERROR
465 #endif
466
467 #endif
468