src/lib/nanogl/nanoGL.pas

   1 (*
   2  * Copyright (C) 2007-2009 Olli Hinkka
   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 (* Sources: https://github.com/DeaDDooMER/nanogl *)
  21 unit nanoGL;
  22
  23 interface
  24
  25 uses ctypes;
  26
  27 const
  28 {$IF DEFINED(WINDOWS)}
  29   nanoGL_LibName = 'nanoGL.dll';
  30 {$ELSEIF DEFINED(DARWIN)}
  31   nanoGL_LibName = 'libnanoGL.dylib';
  32 {$ELSEIF DEFINED(UNIX)}
  33   nanoGL_LibName = 'libnanoGL.so';
  34 {$ENDIF}
  35
  36 type
  37   GLenum     = cuint;   PGLenum     = ^GLenum;
  38   GLboolean  = cuchar;  PGLboolean  = ^GLboolean;
  39   GLbitfield = cuint;   PGLbitfield = ^GLbitfield;
  40   GLbyte     = cschar;  PGLbyte     = ^GLbyte;
  41   GLshort    = cshort;  PGLshort    = ^GLshort;
  42   GLint      = cint;    PGLint      = ^GLint;
  43   GLsizei    = cint;    PGLsizei    = ^GLsizei;
  44   GLubyte    = cuchar;  PGLubyte    = ^GLubyte;
  45   GLushort   = cushort; PGLushort   = ^GLushort;
  46   GLuint     = cuint;   PGLuint     = ^GLuint;
  47   GLfloat    = cfloat;  PGLfloat    = ^GLfloat;
  48   GLclampf   = cfloat;  PGLclampf   = ^GLclampf;
  49   GLdouble   = cdouble; PGLdouble   = ^GLdouble;
  50   GLclampd   = cdouble; PGLclampd   = ^GLclampd;
  51 { GLvoid     = void; }  PGLvoid     = Pointer;     PPGLvoid = ^PGLvoid;
  52   GLfixed    = cint;    PGLfixed    = ^Integer;
  53   GLclampx   = cint;    PGLclampx   = ^Integer;
  54
  55   TGLenum     = GLenum;
  56   TGLboolean  = GLboolean;
  57   TGLbitfield = GLbitfield;
  58   TGLbyte     = GLbyte;
  59   TGLshort    = GLshort;
  60   TGLint      = GLint;
  61   TGLsizei    = GLsizei;
  62   TGLubyte    = GLubyte;
  63   TGLushort   = GLushort;
  64   TGLuint     = GLuint;
  65   TGLfloat    = GLfloat;
  66   TGLclampf   = GLclampf;
  67   TGLdouble   = GLdouble;
  68   TGLclampd   = GLclampd;
  69   TGLfixed    = GLfixed;
  70   TGLclampx   = GLclampx;
  71
  72 const
  73
  74 (* Boolean values *)
  75   GL_FALSE = $0;
  76   GL_TRUE = $1;
  77
  78 (* Data types *)
  79   GL_BYTE = $1400;
  80   GL_UNSIGNED_BYTE = $1401;
  81   GL_SHORT = $1402;
  82   GL_UNSIGNED_SHORT = $1403;
  83   GL_INT = $1404;
  84   GL_UNSIGNED_INT = $1405;
  85   GL_FLOAT = $1406;
  86   GL_2_BYTES = $1407;
  87   GL_3_BYTES = $1408;
  88   GL_4_BYTES = $1409;
  89   GL_DOUBLE = $140A;
  90
  91 (* StringName *)
  92   GL_VENDOR = $1F00;
  93   GL_RENDERER = $1F01;
  94   GL_VERSION = $1F02;
  95   GL_EXTENSIONS = $1F03;
  96
  97 (* TextureEnvMode *)
  98   GL_MODULATE = $2100;
  99   GL_DECAL = $2101;
 100 (*      GL_BLEND *)
 101   GL_ADD = $0104;
 102 (*      GL_REPLACE *)
 103
 104 (* Primitives *)
 105   GL_POINTS = $0000;
 106   GL_LINES = $0001;
 107   GL_LINE_LOOP = $0002;
 108   GL_LINE_STRIP = $0003;
 109   GL_TRIANGLES = $0004;
 110   GL_TRIANGLE_STRIP = $0005;
 111   GL_TRIANGLE_FAN = $0006;
 112   GL_QUADS = $0007;
 113   GL_QUAD_STRIP = $0008;
 114   GL_POLYGON = $0009;
 115
 116 (* EnableCap *)
 117 //  GL_FOG = $0B60;
 118 //  GL_LIGHTING = $0B50;
 119 //  GL_TEXTURE_2D = $0DE1;
 120 //  GL_CULL_FACE = $0B44;
 121   GL_ALPHA_TEST = $0BC0;
 122 //  GL_BLEND = $0BE2;
 123 //  GL_COLOR_LOGIC_OP = $0BF2;
 124 //  GL_DITHER = $0BD0;
 125 //  GL_STENCIL_TEST = $0B90;
 126 //  GL_DEPTH_TEST = $0B71;
 127 (*      GL_LIGHT0 *)
 128 (*      GL_LIGHT1 *)
 129 (*      GL_LIGHT2 *)
 130 (*      GL_LIGHT3 *)
 131 (*      GL_LIGHT4 *)
 132 (*      GL_LIGHT5 *)
 133 (*      GL_LIGHT6 *)
 134 (*      GL_LIGHT7 *)
 135   GL_POINT_SMOOTH = $0B10;
 136   GL_LINE_SMOOTH = $0B20;
 137   GL_SCISSOR_TEST = $0C11;
 138 //  GL_COLOR_MATERIAL = $0B57;
 139 //  GL_NORMALIZE = $0BA1;
 140   GL_RESCALE_NORMAL = $803A;
 141 //  GL_POLYGON_OFFSET_FILL = $8037;
 142   GL_VERTEX_ARRAY = $8074;
 143   GL_NORMAL_ARRAY = $8075;
 144   GL_COLOR_ARRAY = $8076;
 145   GL_TEXTURE_COORD_ARRAY = $8078;
 146   GL_MULTISAMPLE = $809D;
 147   GL_SAMPLE_ALPHA_TO_COVERAGE = $809E;
 148   GL_SAMPLE_ALPHA_TO_ONE = $809F;
 149   GL_SAMPLE_COVERAGE = $80A0;
 150
 151 (* Texture mapping *)
 152   GL_TEXTURE_ENV = $2300;
 153   GL_TEXTURE_ENV_MODE = $2200;
 154   GL_TEXTURE_1D = $0DE0;
 155   GL_TEXTURE_2D = $0DE1;
 156   GL_TEXTURE_WRAP_S = $2802;
 157   GL_TEXTURE_WRAP_T = $2803;
 158   GL_TEXTURE_MAG_FILTER = $2800;
 159   GL_TEXTURE_MIN_FILTER = $2801;
 160   GL_TEXTURE_ENV_COLOR = $2201;
 161   GL_TEXTURE_GEN_S = $0C60;
 162   GL_TEXTURE_GEN_T = $0C61;
 163   GL_TEXTURE_GEN_MODE = $2500;
 164   GL_TEXTURE_BORDER_COLOR = $1004;
 165   GL_TEXTURE_WIDTH = $1000;
 166   GL_TEXTURE_HEIGHT = $1001;
 167   GL_TEXTURE_BORDER = $1005;
 168   GL_TEXTURE_COMPONENTS = $1003;
 169   GL_TEXTURE_RED_SIZE = $805C;
 170   GL_TEXTURE_GREEN_SIZE = $805D;
 171   GL_TEXTURE_BLUE_SIZE = $805E;
 172   GL_TEXTURE_ALPHA_SIZE = $805F;
 173   GL_TEXTURE_LUMINANCE_SIZE = $8060;
 174   GL_TEXTURE_INTENSITY_SIZE = $8061;
 175   GL_NEAREST_MIPMAP_NEAREST = $2700;
 176   GL_NEAREST_MIPMAP_LINEAR = $2702;
 177   GL_LINEAR_MIPMAP_NEAREST = $2701;
 178   GL_LINEAR_MIPMAP_LINEAR = $2703;
 179   GL_OBJECT_LINEAR = $2401;
 180   GL_OBJECT_PLANE = $2501;
 181   GL_EYE_LINEAR = $2400;
 182   GL_EYE_PLANE = $2502;
 183   GL_SPHERE_MAP = $2402;
 184 //  GL_DECAL = $2101;
 185 //  GL_MODULATE = $2100;
 186   GL_NEAREST = $2600;
 187   GL_REPEAT = $2901;
 188   GL_CLAMP = $2900;
 189   GL_S = $2000;
 190   GL_T = $2001;
 191   GL_R = $2002;
 192   GL_Q = $2003;
 193   GL_TEXTURE_GEN_R = $0C62;
 194   GL_TEXTURE_GEN_Q = $0C63;
 195   GL_CLAMP_TO_EDGE = $812F;
 196
 197 (* Matrix Mode *)
 198   GL_MATRIX_MODE = $0BA0;
 199   GL_MODELVIEW = $1700;
 200   GL_PROJECTION = $1701;
 201   GL_TEXTURE = $1702;
 202
 203 (* Buffers, Pixel Drawing/Reading *)
 204   GL_NONE = $0;
 205   GL_LEFT = $0406;
 206   GL_RIGHT = $0407;
 207 (*GL_FRONT                                      0x0404 *)
 208 (*GL_BACK                                       0x0405 *)
 209 (*GL_FRONT_AND_BACK                             0x0408 *)
 210   GL_FRONT_LEFT = $0400;
 211   GL_FRONT_RIGHT = $0401;
 212   GL_BACK_LEFT = $0402;
 213   GL_BACK_RIGHT = $0403;
 214   GL_AUX0 = $0409;
 215   GL_AUX1 = $040A;
 216   GL_AUX2 = $040B;
 217   GL_AUX3 = $040C;
 218   GL_COLOR_INDEX = $1900;
 219   GL_RED = $1903;
 220   GL_GREEN = $1904;
 221   GL_BLUE = $1905;
 222   GL_ALPHA = $1906;
 223   GL_LUMINANCE = $1909;
 224   GL_LUMINANCE_ALPHA = $190A;
 225   GL_ALPHA_BITS = $0D55;
 226   GL_RED_BITS = $0D52;
 227   GL_GREEN_BITS = $0D53;
 228   GL_BLUE_BITS = $0D54;
 229   GL_INDEX_BITS = $0D51;
 230 //  GL_SUBPIXEL_BITS = $0D50;
 231   GL_AUX_BUFFERS = $0C00;
 232   GL_READ_BUFFER = $0C02;
 233   GL_DRAW_BUFFER = $0C01;
 234   GL_DOUBLEBUFFER = $0C32;
 235   GL_STEREO = $0C33;
 236   GL_BITMAP = $1A00;
 237   GL_COLOR = $1800;
 238   GL_DEPTH = $1801;
 239   GL_STENCIL = $1802;
 240   GL_DITHER = $0BD0;
 241   GL_RGB = $1907;
 242   GL_RGBA = $1908;
 243
 244 (* Fog *)
 245   GL_FOG = $0B60;
 246   GL_FOG_MODE = $0B65;
 247   GL_FOG_DENSITY = $0B62;
 248   GL_FOG_COLOR = $0B66;
 249   GL_FOG_INDEX = $0B61;
 250   GL_FOG_START = $0B63;
 251   GL_FOG_END = $0B64;
 252   GL_LINEAR = $2601;
 253   GL_EXP = $0800;
 254   GL_EXP2 = $0801;
 255
 256 (* Polygons *)
 257   GL_POINT = $1B00;
 258   GL_LINE = $1B01;
 259   GL_FILL = $1B02;
 260   GL_CW = $0900;
 261   GL_CCW = $0901;
 262   GL_FRONT = $0404;
 263   GL_BACK = $0405;
 264   GL_POLYGON_MODE = $0B40;
 265   GL_POLYGON_SMOOTH = $0B41;
 266   GL_POLYGON_STIPPLE = $0B42;
 267   GL_EDGE_FLAG = $0B43;
 268   GL_CULL_FACE = $0B44;
 269   GL_CULL_FACE_MODE = $0B45;
 270   GL_FRONT_FACE = $0B46;
 271   GL_POLYGON_OFFSET_FACTOR = $8038;
 272   GL_POLYGON_OFFSET_UNITS = $2A00;
 273   GL_POLYGON_OFFSET_POINT = $2A01;
 274   GL_POLYGON_OFFSET_LINE = $2A02;
 275   GL_POLYGON_OFFSET_FILL = $8037;
 276
 277 (* Lighting *)
 278   GL_LIGHTING = $0B50;
 279   GL_LIGHT0 = $4000;
 280   GL_LIGHT1 = $4001;
 281   GL_LIGHT2 = $4002;
 282   GL_LIGHT3 = $4003;
 283   GL_LIGHT4 = $4004;
 284   GL_LIGHT5 = $4005;
 285   GL_LIGHT6 = $4006;
 286   GL_LIGHT7 = $4007;
 287   GL_SPOT_EXPONENT = $1205;
 288   GL_SPOT_CUTOFF = $1206;
 289   GL_CONSTANT_ATTENUATION = $1207;
 290   GL_LINEAR_ATTENUATION = $1208;
 291   GL_QUADRATIC_ATTENUATION = $1209;
 292   GL_AMBIENT = $1200;
 293   GL_DIFFUSE = $1201;
 294   GL_SPECULAR = $1202;
 295   GL_SHININESS = $1601;
 296   GL_EMISSION = $1600;
 297   GL_POSITION = $1203;
 298   GL_SPOT_DIRECTION = $1204;
 299   GL_AMBIENT_AND_DIFFUSE = $1602;
 300   GL_COLOR_INDEXES = $1603;
 301   GL_LIGHT_MODEL_TWO_SIDE = $0B52;
 302   GL_LIGHT_MODEL_LOCAL_VIEWER = $0B51;
 303   GL_LIGHT_MODEL_AMBIENT = $0B53;
 304   GL_FRONT_AND_BACK = $0408;
 305   GL_SHADE_MODEL = $0B54;
 306   GL_FLAT = $1D00;
 307   GL_SMOOTH = $1D01;
 308   GL_COLOR_MATERIAL = $0B57;
 309   GL_COLOR_MATERIAL_FACE = $0B55;
 310   GL_COLOR_MATERIAL_PARAMETER = $0B56;
 311   GL_NORMALIZE = $0BA1;
 312
 313 (* Blending *)
 314   GL_BLEND = $0BE2;
 315   GL_BLEND_SRC = $0BE1;
 316   GL_BLEND_DST = $0BE0;
 317   GL_ZERO = $0;
 318   GL_ONE = $1;
 319   GL_SRC_COLOR = $0300;
 320   GL_ONE_MINUS_SRC_COLOR = $0301;
 321   GL_SRC_ALPHA = $0302;
 322   GL_ONE_MINUS_SRC_ALPHA = $0303;
 323   GL_DST_ALPHA = $0304;
 324   GL_ONE_MINUS_DST_ALPHA = $0305;
 325   GL_DST_COLOR = $0306;
 326   GL_ONE_MINUS_DST_COLOR = $0307;
 327   GL_SRC_ALPHA_SATURATE = $0308;
 328
 329 (* ClipPlaneName *)
 330   GL_CLIP_PLANE0 = $3000;
 331   GL_CLIP_PLANE1 = $3001;
 332   GL_CLIP_PLANE2 = $3002;
 333   GL_CLIP_PLANE3 = $3003;
 334   GL_CLIP_PLANE4 = $3004;
 335   GL_CLIP_PLANE5 = $3005;
 336
 337 (* OpenGL 1.1 *)
 338   GL_PROXY_TEXTURE_1D = $8063;
 339   GL_PROXY_TEXTURE_2D = $8064;
 340   GL_TEXTURE_PRIORITY = $8066;
 341   GL_TEXTURE_RESIDENT = $8067;
 342   GL_TEXTURE_BINDING_1D = $8068;
 343   GL_TEXTURE_BINDING_2D = $8069;
 344   GL_TEXTURE_INTERNAL_FORMAT = $1003;
 345   GL_ALPHA4 = $803B;
 346   GL_ALPHA8 = $803C;
 347   GL_ALPHA12 = $803D;
 348   GL_ALPHA16 = $803E;
 349   GL_LUMINANCE4 = $803F;
 350   GL_LUMINANCE8 = $8040;
 351   GL_LUMINANCE12 = $8041;
 352   GL_LUMINANCE16 = $8042;
 353   GL_LUMINANCE4_ALPHA4 = $8043;
 354   GL_LUMINANCE6_ALPHA2 = $8044;
 355   GL_LUMINANCE8_ALPHA8 = $8045;
 356   GL_LUMINANCE12_ALPHA4 = $8046;
 357   GL_LUMINANCE12_ALPHA12 = $8047;
 358   GL_LUMINANCE16_ALPHA16 = $8048;
 359   GL_INTENSITY = $8049;
 360   GL_INTENSITY4 = $804A;
 361   GL_INTENSITY8 = $804B;
 362   GL_INTENSITY12 = $804C;
 363   GL_INTENSITY16 = $804D;
 364   GL_R3_G3_B2 = $2A10;
 365   GL_RGB4 = $804F;
 366   GL_RGB5 = $8050;
 367   GL_RGB8 = $8051;
 368   GL_RGB10 = $8052;
 369   GL_RGB12 = $8053;
 370   GL_RGB16 = $8054;
 371   GL_RGBA2 = $8055;
 372   GL_RGBA4 = $8056;
 373   GL_RGB5_A1 = $8057;
 374   GL_RGBA8 = $8058;
 375   GL_RGB10_A2 = $8059;
 376   GL_RGBA12 = $805A;
 377   GL_RGBA16 = $805B;
 378   GL_UNSIGNED_SHORT_4_4_4_4 = $8033;
 379   GL_UNSIGNED_SHORT_5_5_5_1 = $8034;
 380   GL_UNSIGNED_SHORT_5_6_5 = $8363;
 381
 382   GL_CLIENT_PIXEL_STORE_BIT = $00000001;
 383   GL_CLIENT_VERTEX_ARRAY_BIT = $00000002;
 384   GL_ALL_CLIENT_ATTRIB_BITS = $FFFFFFFF;
 385   GL_CLIENT_ALL_ATTRIB_BITS = $FFFFFFFF;
 386
 387 (* Stencil *)
 388   GL_STENCIL_TEST = $0B90;
 389   GL_STENCIL_WRITEMASK = $0B98;
 390   GL_STENCIL_BITS = $0D57;
 391   GL_STENCIL_FUNC = $0B92;
 392   GL_STENCIL_VALUE_MASK = $0B93;
 393   GL_STENCIL_REF = $0B97;
 394   GL_STENCIL_FAIL = $0B94;
 395   GL_STENCIL_PASS_DEPTH_PASS = $0B96;
 396   GL_STENCIL_PASS_DEPTH_FAIL = $0B95;
 397   GL_STENCIL_CLEAR_VALUE = $0B91;
 398   GL_STENCIL_INDEX = $1901;
 399   GL_KEEP = $1E00;
 400   GL_REPLACE = $1E01;
 401   GL_INCR = $1E02;
 402   GL_DECR = $1E03;
 403
 404 (* Hints *)
 405   GL_FOG_HINT = $0C54;
 406   GL_LINE_SMOOTH_HINT = $0C52;
 407   GL_PERSPECTIVE_CORRECTION_HINT = $0C50;
 408   GL_POINT_SMOOTH_HINT = $0C51;
 409   GL_POLYGON_SMOOTH_HINT = $0C53;
 410   GL_DONT_CARE = $1100;
 411   GL_FASTEST = $1101;
 412   GL_NICEST = $1102;
 413
 414 (* Gets *)
 415   GL_ATTRIB_STACK_DEPTH = $0BB0;
 416   GL_CLIENT_ATTRIB_STACK_DEPTH = $0BB1;
 417 //  GL_COLOR_CLEAR_VALUE = $0C22;
 418 //  GL_COLOR_WRITEMASK = $0C23;
 419   GL_CURRENT_INDEX = $0B01;
 420 //  GL_CURRENT_COLOR = $0B00;
 421 //  GL_CURRENT_NORMAL = $0B02;
 422   GL_CURRENT_RASTER_COLOR = $0B04;
 423   GL_CURRENT_RASTER_DISTANCE = $0B09;
 424   GL_CURRENT_RASTER_INDEX = $0B05;
 425   GL_CURRENT_RASTER_POSITION = $0B07;
 426   GL_CURRENT_RASTER_TEXTURE_COORDS = $0B06;
 427   GL_CURRENT_RASTER_POSITION_VALID = $0B08;
 428 //  GL_CURRENT_TEXTURE_COORDS = $0B03;
 429   GL_INDEX_CLEAR_VALUE = $0C20;
 430   GL_INDEX_MODE = $0C30;
 431   GL_INDEX_WRITEMASK = $0C21;
 432   GL_MODELVIEW_MATRIX = $0BA6;
 433   GL_MODELVIEW_STACK_DEPTH = $0BA3;
 434   GL_NAME_STACK_DEPTH = $0D70;
 435   GL_PROJECTION_MATRIX = $0BA7;
 436 //  GL_PROJECTION_STACK_DEPTH = $0BA4;
 437   GL_RENDER_MODE = $0C40;
 438   GL_RGBA_MODE = $0C31;
 439   GL_TEXTURE_MATRIX = $0BA8;
 440 //  GL_TEXTURE_STACK_DEPTH = $0BA5;
 441   GL_VIEWPORT = $0BA2;
 442
 443 (* glPush/PopAttrib bits *)
 444   GL_CURRENT_BIT = $00000001;
 445   GL_POINT_BIT = $00000002;
 446   GL_LINE_BIT = $00000004;
 447   GL_POLYGON_BIT = $00000008;
 448   GL_POLYGON_STIPPLE_BIT = $00000010;
 449   GL_PIXEL_MODE_BIT = $00000020;
 450   GL_LIGHTING_BIT = $00000040;
 451   GL_FOG_BIT = $00000080;
 452   GL_DEPTH_BUFFER_BIT = $00000100;
 453   GL_ACCUM_BUFFER_BIT = $00000200;
 454   GL_STENCIL_BUFFER_BIT = $00000400;
 455   GL_VIEWPORT_BIT = $00000800;
 456   GL_TRANSFORM_BIT = $00001000;
 457   GL_ENABLE_BIT = $00002000;
 458   GL_COLOR_BUFFER_BIT = $00004000;
 459   GL_HINT_BIT = $00008000;
 460   GL_EVAL_BIT = $00010000;
 461   GL_LIST_BIT = $00020000;
 462   GL_TEXTURE_BIT = $00040000;
 463   GL_SCISSOR_BIT = $00080000;
 464   GL_ALL_ATTRIB_BITS = $000FFFFF;
 465
 466 (* Depth buffer *)
 467   GL_NEVER = $0200;
 468   GL_LESS = $0201;
 469   GL_EQUAL = $0202;
 470   GL_LEQUAL = $0203;
 471   GL_GREATER = $0204;
 472   GL_NOTEQUAL = $0205;
 473   GL_GEQUAL = $0206;
 474   GL_ALWAYS = $0207;
 475   GL_DEPTH_TEST = $0B71;
 476   GL_DEPTH_BITS = $0D56;
 477   GL_DEPTH_CLEAR_VALUE = $0B73;
 478   GL_DEPTH_FUNC = $0B74;
 479   GL_DEPTH_RANGE = $0B70;
 480   GL_DEPTH_WRITEMASK = $0B72;
 481   GL_DEPTH_COMPONENT = $1902;
 482
 483 (* TextureUnit *)
 484   GL_TEXTURE0 = $84C0;
 485   GL_TEXTURE1 = $84C1;
 486   GL_TEXTURE2 = $84C2;
 487   GL_TEXTURE3 = $84C3;
 488   GL_TEXTURE4 = $84C4;
 489   GL_TEXTURE5 = $84C5;
 490   GL_TEXTURE6 = $84C6;
 491   GL_TEXTURE7 = $84C7;
 492   GL_TEXTURE8 = $84C8;
 493   GL_TEXTURE9 = $84C9;
 494   GL_TEXTURE10 = $84CA;
 495   GL_TEXTURE11 = $84CB;
 496   GL_TEXTURE12 = $84CC;
 497   GL_TEXTURE13 = $84CD;
 498   GL_TEXTURE14 = $84CE;
 499   GL_TEXTURE15 = $84CF;
 500   GL_TEXTURE16 = $84D0;
 501   GL_TEXTURE17 = $84D1;
 502   GL_TEXTURE18 = $84D2;
 503   GL_TEXTURE19 = $84D3;
 504   GL_TEXTURE20 = $84D4;
 505   GL_TEXTURE21 = $84D5;
 506   GL_TEXTURE22 = $84D6;
 507   GL_TEXTURE23 = $84D7;
 508   GL_TEXTURE24 = $84D8;
 509   GL_TEXTURE25 = $84D9;
 510   GL_TEXTURE26 = $84DA;
 511   GL_TEXTURE27 = $84DB;
 512   GL_TEXTURE28 = $84DC;
 513   GL_TEXTURE29 = $84DD;
 514   GL_TEXTURE30 = $84DE;
 515   GL_TEXTURE31 = $84DF;
 516   GL_ACTIVE_TEXTURE = $84E0;
 517   GL_CLIENT_ACTIVE_TEXTURE = $84E1;
 518
 519 (* GetPName *)
 520   GL_CURRENT_COLOR = $0B00;
 521   GL_CURRENT_NORMAL = $0B02;
 522   GL_CURRENT_TEXTURE_COORDS = $0B03;
 523   GL_POINT_SIZE = $0B11;
 524   GL_POINT_SIZE_MIN = $8126;
 525   GL_POINT_SIZE_MAX = $8127;
 526   GL_POINT_FADE_THRESHOLD_SIZE = $8128;
 527   GL_POINT_DISTANCE_ATTENUATION = $8129;
 528   GL_SMOOTH_POINT_SIZE_RANGE = $0B12;
 529   GL_LINE_WIDTH = $0B21;
 530   GL_SMOOTH_LINE_WIDTH_RANGE = $0B22;
 531   GL_ALIASED_POINT_SIZE_RANGE = $846D;
 532   GL_ALIASED_LINE_WIDTH_RANGE = $846E;
 533 //  GL_CULL_FACE_MODE = $0B45;
 534 //  GL_FRONT_FACE = $0B46;
 535 //  GL_SHADE_MODEL = $0B54;
 536 //  GL_DEPTH_RANGE = $0B70;
 537 //  GL_DEPTH_WRITEMASK = $0B72;
 538 //  GL_DEPTH_CLEAR_VALUE = $0B73;
 539 //  GL_DEPTH_FUNC = $0B74;
 540 //  GL_STENCIL_CLEAR_VALUE = $0B91;
 541 //  GL_STENCIL_FUNC = $0B92;
 542 //  GL_STENCIL_VALUE_MASK = $0B93;
 543 //  GL_STENCIL_FAIL = $0B94;
 544 //  GL_STENCIL_PASS_DEPTH_FAIL = $0B95;
 545 //  GL_STENCIL_PASS_DEPTH_PASS = $0B96;
 546 //  GL_STENCIL_REF = $0B97;
 547 //  GL_STENCIL_WRITEMASK = $0B98;
 548 //  GL_MATRIX_MODE = $0BA0;
 549 //  GL_VIEWPORT = $0BA2;
 550 //  GL_MODELVIEW_STACK_DEPTH = $0BA3;
 551   GL_PROJECTION_STACK_DEPTH = $0BA4;
 552   GL_TEXTURE_STACK_DEPTH = $0BA5;
 553 //  GL_MODELVIEW_MATRIX = $0BA6;
 554 //  GL_PROJECTION_MATRIX = $0BA7;
 555 //  GL_TEXTURE_MATRIX = $0BA8;
 556   GL_ALPHA_TEST_FUNC = $0BC1;
 557   GL_ALPHA_TEST_REF = $0BC2;
 558 //  GL_BLEND_DST = $0BE0;
 559 //  GL_BLEND_SRC = $0BE1;
 560   GL_LOGIC_OP_MODE = $0BF0;
 561   GL_SCISSOR_BOX = $0C10;
 562 //  GL_SCISSOR_TEST = $0C11;
 563   GL_COLOR_CLEAR_VALUE = $0C22;
 564   GL_COLOR_WRITEMASK = $0C23;
 565   GL_UNPACK_ALIGNMENT = $0CF5;
 566   GL_PACK_ALIGNMENT = $0D05;
 567   GL_MAX_LIGHTS = $0D31;
 568   GL_MAX_CLIP_PLANES = $0D32;
 569   GL_MAX_TEXTURE_SIZE = $0D33;
 570   GL_MAX_MODELVIEW_STACK_DEPTH = $0D36;
 571   GL_MAX_PROJECTION_STACK_DEPTH = $0D38;
 572   GL_MAX_TEXTURE_STACK_DEPTH = $0D39;
 573   GL_MAX_VIEWPORT_DIMS = $0D3A;
 574   GL_MAX_ELEMENTS_VERTICES = $80E8;
 575   GL_MAX_ELEMENTS_INDICES = $80E9;
 576   GL_MAX_TEXTURE_UNITS = $84E2;
 577   GL_SUBPIXEL_BITS = $0D50;
 578 //  GL_RED_BITS = $0D52;
 579 //  GL_GREEN_BITS = $0D53;
 580 //  GL_BLUE_BITS = $0D54;
 581 //  GL_ALPHA_BITS = $0D55;
 582 //  GL_DEPTH_BITS = $0D56;
 583 //  GL_STENCIL_BITS = $0D57;
 584 //  GL_POLYGON_OFFSET_UNITS = $2A00;
 585 //  GL_POLYGON_OFFSET_FILL = $8037;
 586 //  GL_POLYGON_OFFSET_FACTOR = $8038;
 587 //  GL_TEXTURE_BINDING_2D = $8069;
 588   GL_VERTEX_ARRAY_SIZE = $807A;
 589   GL_VERTEX_ARRAY_TYPE = $807B;
 590   GL_VERTEX_ARRAY_STRIDE = $807C;
 591   GL_NORMAL_ARRAY_TYPE = $807E;
 592   GL_NORMAL_ARRAY_STRIDE = $807F;
 593   GL_COLOR_ARRAY_SIZE = $8081;
 594   GL_COLOR_ARRAY_TYPE = $8082;
 595   GL_COLOR_ARRAY_STRIDE = $8083;
 596   GL_TEXTURE_COORD_ARRAY_SIZE = $8088;
 597   GL_TEXTURE_COORD_ARRAY_TYPE = $8089;
 598   GL_TEXTURE_COORD_ARRAY_STRIDE = $808A;
 599   GL_VERTEX_ARRAY_POINTER = $808E;
 600   GL_NORMAL_ARRAY_POINTER = $808F;
 601   GL_COLOR_ARRAY_POINTER = $8090;
 602   GL_TEXTURE_COORD_ARRAY_POINTER = $8092;
 603   GL_SAMPLE_BUFFERS = $80A8;
 604   GL_SAMPLES = $80A9;
 605   GL_SAMPLE_COVERAGE_VALUE = $80AA;
 606   GL_SAMPLE_COVERAGE_INVERT = $80AB;
 607
 608 (* ErrorCode *)
 609   GL_NO_ERROR = 0;
 610   GL_INVALID_ENUM = $0500;
 611   GL_INVALID_VALUE = $0501;
 612   GL_INVALID_OPERATION = $0502;
 613   GL_STACK_OVERFLOW = $0503;
 614   GL_STACK_UNDERFLOW = $0504;
 615   GL_OUT_OF_MEMORY = $0505;
 616
 617 (* Macros *)
 618 procedure glVertex2i(x, y: GLint);
 619 procedure glTexCoord2d(s, t: GLdouble);
 620 procedure glVertex3d(x, y, z: GLdouble);
 621
 622 (* This Port Specific *)
 623 procedure glLoadMatrixd(const m: PGLdouble);
 624 procedure glTexCoord2i(s, t: GLint);
 625
 626 procedure glBegin(mode: GLenum); cdecl; external nanoGL_LibName;
 627 procedure glEnd; cdecl; external nanoGL_LibName;
 628 procedure glEnable(cap: GLenum); cdecl; external nanoGL_LibName;
 629 procedure glDisable(cap: GLenum); cdecl; external nanoGL_LibName;
 630 procedure glVertex2f(x, y: GLfloat); cdecl; external nanoGL_LibName;
 631 procedure glColor3f(red, green, blue: GLfloat); cdecl; external nanoGL_LibName;
 632 procedure glTexCoord2f(s, t: GLfloat); cdecl; external nanoGL_LibName;
 633 procedure glViewport(x, y: GLint; width, height: GLsizei); cdecl; external nanoGL_LibName;
 634 procedure glLoadIdentity; cdecl; external nanoGL_LibName;
 635 procedure glColor4f(red, green, blue, alpha: GLfloat); cdecl; external nanoGL_LibName;
 636 procedure glOrtho(left, right, bottom, top, zNear, zFar: GLdouble); cdecl; external nanoGL_LibName;
 637 procedure glMatrixMode(mode: GLenum); cdecl; external nanoGL_LibName;
 638 //procedure glTexParameterf(target: GLenum; pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 639 procedure glTexImage2D(target: GLenum; level, internalformat: GLint; width, height: GLsizei; border: GLint; format, atype: GLenum; const pixels: Pointer); cdecl; external nanoGL_LibName;
 640 procedure glDrawBuffer(mode: GLenum); cdecl; external nanoGL_LibName;
 641 procedure glTranslatef(x, y, z: GLfloat); cdecl; external nanoGL_LibName;
 642 procedure glRotatef(angle, x, y, z: GLfloat); cdecl; external nanoGL_LibName;
 643 procedure glScalef(x, y, z: GLfloat); cdecl; external nanoGL_LibName;
 644 procedure glDepthRange(zNear, zFar: GLclampd); cdecl; external nanoGL_LibName;
 645 procedure glDepthFunc(func: GLenum); cdecl; external nanoGL_LibName;
 646 procedure glFinish; cdecl; external nanoGL_LibName;
 647 procedure glGetFloatv(pname: GLenum; params: PGLfloat); cdecl; external nanoGL_LibName;
 648 procedure glGetIntegerv(pname: GLenum; params: PGLint); cdecl; external nanoGL_LibName;
 649 procedure glCullFace(mode: GLenum); cdecl; external nanoGL_LibName;
 650 procedure glFrustum(left, right, bottom, top, zNear, zFar: GLdouble); cdecl; external nanoGL_LibName;
 651 procedure glClear(mask: GLbitfield); cdecl; external nanoGL_LibName;
 652 procedure glVertex3f(x, y, z: GLfloat); cdecl; external nanoGL_LibName;
 653 procedure glColor4fv(const v: PGLfloat); cdecl; external nanoGL_LibName;
 654 procedure glHint(target, mode: GLenum); cdecl; external nanoGL_LibName;
 655 procedure glBlendFunc(sfactor, dfactor: GLenum); cdecl; external nanoGL_LibName;
 656 procedure glPopMatrix; cdecl; external nanoGL_LibName;
 657 procedure glShadeModel(mode: GLenum); cdecl; external nanoGL_LibName;
 658 procedure glPushMatrix; cdecl; external nanoGL_LibName;
 659 procedure glTexEnvf(target: GLenum; pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 660 procedure glVertex3fv(const v: PGLfloat); cdecl; external nanoGL_LibName;
 661 procedure glDepthMask(flag: GLboolean); cdecl; external nanoGL_LibName;
 662 procedure glBindTexture(target: GLenum; texture: GLuint); cdecl; external nanoGL_LibName;
 663 function  glGetString(name: GLenum): PChar; cdecl; external nanoGL_LibName; // originally returns PGLubyte
 664 procedure glAlphaFunc(func: GLenum; ref: GLclampf); cdecl; external nanoGL_LibName;
 665 procedure glFlush; cdecl; external nanoGL_LibName;
 666 procedure glReadPixels(x, y: GLint; width, height: GLsizei; format, atype: GLenum; pixels: Pointer); cdecl; external nanoGL_LibName;
 667 procedure glReadBuffer(mode: GLenum); cdecl; external nanoGL_LibName;
 668 procedure glLoadMatrixf(const m: PGLfloat); cdecl; external nanoGL_LibName;
 669 procedure glTexSubImage2D(target: GLenum; level, xoffset, yoffset: GLint; width, height: GLsizei; format, atype: GLenum; const pixels: Pointer); cdecl; external nanoGL_LibName;
 670 procedure glClearColor(red, green, blue, alpha: GLclampf); cdecl; external nanoGL_LibName;
 671 function  glGetError(): GLenum; cdecl; external nanoGL_LibName;
 672 procedure glActiveTexture(texture: GLenum); cdecl; external nanoGL_LibName;
 673 procedure glClientActiveTexture(texture: GLenum); cdecl; external nanoGL_LibName;
 674 procedure glActiveTextureARB(texture: GLenum); cdecl; external nanoGL_LibName;
 675 procedure glClientActiveTextureARB(texture: GLenum); cdecl; external nanoGL_LibName;
 676 procedure glColor3ubv(const v: PGLubyte); cdecl; external nanoGL_LibName;
 677 procedure glPolygonMode(face, mode: GLenum); cdecl; external nanoGL_LibName;
 678 procedure glArrayElement(i: GLint); cdecl; external nanoGL_LibName;
 679 procedure glLineWidth(width: GLfloat); cdecl; external nanoGL_LibName;
 680 procedure glCallList(list: GLuint); cdecl; external nanoGL_LibName;
 681 procedure glTexCoord2fv(const v: PGLfloat); cdecl; external nanoGL_LibName;
 682 procedure glColorMask(red, green, blue, alpha: GLboolean); cdecl; external nanoGL_LibName;
 683 procedure glStencilFunc(func: GLenum; ref: GLint; mask: GLuint); cdecl; external nanoGL_LibName;
 684 procedure glStencilOp(fail, zfail, zpass: GLenum); cdecl; external nanoGL_LibName;
 685 procedure glColor4ubv(const v: PGLubyte); cdecl; external nanoGL_LibName;
 686 procedure glDrawElements(mode: GLenum; count: GLsizei; atype: GLenum; const indices: Pointer); cdecl; external nanoGL_LibName;
 687 procedure glEnableClientState(aarray: GLenum); cdecl; external nanoGL_LibName;
 688 procedure glDisableClientState(aarray: GLenum); cdecl; external nanoGL_LibName;
 689 procedure glVertexPointer(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); cdecl; external nanoGL_LibName;
 690 procedure glTexCoordPointer(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); cdecl; external nanoGL_LibName;
 691 procedure glColorPointer(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); cdecl; external nanoGL_LibName;
 692 procedure glPolygonOffset(factor, units: GLfloat); cdecl; external nanoGL_LibName;
 693 procedure glClearDepth(depth: GLclampd); cdecl; external nanoGL_LibName;
 694 procedure glDeleteTextures(n: GLsizei; const textures: PGLuint); cdecl; external nanoGL_LibName;
 695 procedure glTexParameterfv(target: GLenum; pname: GLenum; const params: PGLfloat); cdecl; external nanoGL_LibName;
 696 procedure glStencilMask(mask: GLuint); cdecl; external nanoGL_LibName;
 697 procedure glClearStencil(s: GLint); cdecl; external nanoGL_LibName;
 698 procedure glScissor(x, y: GLint; width, height: GLsizei); cdecl; external nanoGL_LibName;
 699 procedure glClipPlane(plane: GLenum; const equation: PGLdouble); cdecl; external nanoGL_LibName;
 700 procedure glColor3fv(const v: PGLfloat); cdecl; external nanoGL_LibName;
 701 procedure glPointSize(size: GLfloat); cdecl; external nanoGL_LibName;
 702 //procedure glDrawArrays(mode: GLenum; first: GLint; count: GLsizei); cdecl; external nanoGL_LibName;
 703 procedure glMultMatrixf(const m: PGLfloat); cdecl; external nanoGL_LibName;
 704 procedure glPixelStorei(pname: GLenum; param: GLint); cdecl; external nanoGL_LibName;
 705 procedure glFogi(pname: GLenum; param: GLint); cdecl; external nanoGL_LibName;
 706 procedure glFogf(pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 707 procedure glFogfv(pname: GLenum; const params: PGLfloat); cdecl; external nanoGL_LibName;
 708 procedure glGetTexParameteriv(target, pname: GLenum; params: PGLint); cdecl; external nanoGL_LibName;
 709 procedure glTexParameteri(target: GLenum; pname: GLenum; param: GLint); cdecl; external nanoGL_LibName;
 710 procedure glTexParameterf(target: GLenum; pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 711 procedure glTexParameterx(target: GLenum; pname: GLenum; param: GLfixed); cdecl; external nanoGL_LibName;
 712 procedure glGenTextures(n: GLsizei; textures: PGLuint); cdecl; external nanoGL_LibName;
 713 procedure glFrontFace(mode: GLenum); cdecl; external nanoGL_LibName;
 714 procedure glLightf(light, pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 715 procedure glLightfv(light, pname: GLenum; const params: PGLfloat); cdecl; external nanoGL_LibName;
 716 procedure glLightModelf(pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 717 procedure glLightModelfv(pname: GLenum; const params: PGLfloat); cdecl; external nanoGL_LibName;
 718 procedure glMaterialf(face, pname: GLenum; param: GLfloat); cdecl; external nanoGL_LibName;
 719 procedure glMaterialfv(face, pname: GLenum; const params: PGLfloat); cdecl; external nanoGL_LibName;
 720 procedure glColorMaterial(face, mode: GLenum); cdecl; external nanoGL_LibName;
 721 procedure glColor3ub(red, green, blue: GLubyte); cdecl; external nanoGL_LibName;
 722 procedure glNormal3fv(const v: PGLfloat); cdecl; external nanoGL_LibName;
 723 procedure glCopyTexImage2D(target: GLenum; level: GLint; internalFormat: GLenum; x, y: GLint; width, height: GLsizei; border: GLint); cdecl; external nanoGL_LibName;
 724 procedure glTexImage1D(target: GLenum; level: GLInt; internalformat: GLEnum; width: GLsizei; border: GLint; format, atype: GLenum; const pixels: Pointer); cdecl; external nanoGL_LibName;
 725 procedure glTexImage3D(target: GLenum; level: GLint; internalformat: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; border: GLint; format: GLenum; _type: GLenum; const pixels: PGLvoid); cdecl; external nanoGL_LibName;
 726 procedure glTexSubImage1D(target: GLenum; level, xoffset: GLint; width: GLsizei; format, atype: GLenum; const pixels: Pointer); cdecl; external nanoGL_LibName;
 727 procedure glTexSubImage3D(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; zoffset: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; format: GLenum; _type: GLenum; const pixels: PGLvoid); cdecl; external nanoGL_LibName;
 728 function  glIsTexture(texture: GLuint): GLboolean; cdecl; external nanoGL_LibName;
 729 procedure glTexGeni(coord: GLenum; pname: GLenum; param: GLint); cdecl; external nanoGL_LibName;
 730 procedure glTexGenfv(coord: GLenum; pname: GLenum; const params: PGLfloat); cdecl; external nanoGL_LibName;
 731 procedure glColor4ub(red, green, blue, alpha: GLubyte); cdecl; external nanoGL_LibName;
 732 procedure glCopyTexSubImage2D(target: GLenum; level, xoffset, yoffset, x, y: GLint; width, height: GLsizei); cdecl; external nanoGL_LibName;
 733 procedure glTexEnvi(target: GLenum; pname: GLenum; param: GLint); cdecl; external nanoGL_LibName;
 734 procedure glBindFramebuffer(target: GLenum; framebuffer: GLuint); cdecl; external nanoGL_LibName;
 735 procedure glDeleteFramebuffers(n: GLsizei; const framebuffers: PGLuint); cdecl; external nanoGL_LibName;
 736 procedure glGenFramebuffers(n: GLsizei; framebuffers: PGLuint); cdecl; external nanoGL_LibName;
 737 function  glCheckFramebufferStatus(target: GLenum): GLenum; cdecl; external nanoGL_LibName;
 738 function  glIsRenderbuffer(renderbuffer: GLuint): GLboolean; cdecl; external nanoGL_LibName;
 739 procedure glBindRenderbuffer(target: GLenum; renderbuffer: GLuint); cdecl; external nanoGL_LibName;
 740 procedure glDeleteRenderbuffers(n: GLsizei; const renderbuffers: PGLuint); cdecl; external nanoGL_LibName;
 741 procedure glGenRenderbuffers(n: GLsizei; renderbuffers: PGLuint); cdecl; external nanoGL_LibName;
 742 procedure glRenderbufferStorage(target: GLenum; internalformat: GLenum; width: GLsizei; height: GLsizei); cdecl; external nanoGL_LibName;
 743 procedure glFramebufferTexture2D(target: GLenum; attachment: GLenum; textarget: GLenum; texture: GLuint; level: GLint); cdecl; external nanoGL_LibName;
 744 procedure glFramebufferRenderbuffer(target: GLenum; attachment: GLenum; renderbuffertarget: GLenum; renderbuffer: GLuint); cdecl; external nanoGL_LibName;
 745 procedure glNormalPointer(atype: GLenum; stride: GLsizei; const pointer: Pointer); cdecl; external nanoGL_LibName;
 746 procedure glMultiTexCoord3f(target: GLenum; s: GLfloat; t: GLfloat; r: GLfloat); cdecl; external nanoGL_LibName;
 747 procedure glMultiTexCoord3fARB(target: GLenum; s: GLfloat; t: GLfloat; r: GLfloat); cdecl; external nanoGL_LibName;
 748 procedure glMultiTexCoord2f(target: GLenum; s: GLfloat; t: GLfloat); cdecl; external nanoGL_LibName;
 749 procedure glDrawArrays(mode: GLenum; first: GLint; count: GLsizei); cdecl; external nanoGL_LibName;
 750 procedure glBindBufferARB(target: GLuint; index: GLuint); cdecl; external nanoGL_LibName;
 751 procedure glGenBuffersARB(count: Gluint; indexes: PGLuint); cdecl; external nanoGL_LibName;
 752 procedure glDeleteBuffersARB(count: GLuint; indexes: PGLuint); cdecl; external nanoGL_LibName;
 753 procedure glBufferDataARB(target: GLuint; size: GLuint; buffer: PGLvoid; _type: GLuint); cdecl; external nanoGL_LibName;
 754 procedure glBufferSubDataARB(target: GLuint; offset: GLsizei; size: GLsizei; buffer: PGLvoid); cdecl; external nanoGL_LibName;
 755 function  glIsEnabled(cap: GLenum): GLboolean; external nanoGL_LibName;
 756 procedure glPushAttrib(mask: GLbitfield); external nanoGL_LibName;
 757 procedure glPopAttrib; external nanoGL_LibName;
 758
 759 function nanoGL_Init(): CInt; cdecl; external nanoGL_LibName;
 760 procedure nanoGL_Destroy; cdecl; external nanoGL_LibName;
 761 procedure nanoGL_Flush; cdecl; external nanoGL_LibName;
 762 function nanoGL_GetProcAddress(name: PAnsiChar): Pointer; cdecl; external nanoGL_LibName;
 763 procedure nanoGL_Reset; cdecl; external nanoGL_LibName;
 764
 765 implementation
 766
 767 procedure glVertex2i(x, y: GLint);
 768 begin
 769   glVertex3f(x, y, 0);
 770 end;
 771
 772 procedure glTexCoord2d(s, t: GLdouble);
 773 begin
 774   glTexCoord2f(s, t);
 775 end;
 776
 777 procedure glVertex3d(x, y, z: GLdouble);
 778 begin
 779   glVertex3f(x, y, z);
 780 end;
 781
 782 (**** ****)
 783
 784 procedure glLoadMatrixd(const m: PGLdouble);
 785   var
 786     i: Integer;
 787     n: array [0..15] of GLfloat;
 788 begin
 789   for i := 0 to 15 do
 790     n[i] := m[i];
 791   glLoadMatrixf(@n[0]);
 792 end;
 793
 794 procedure glTexCoord2i(s, t: GLint);
 795 begin
 796   glTexCoord2f(s, t);
 797 end;
 798
 799 end.