1 /* 2 * Mesa 3-D graphics library 3 * Version: 6.5.3 4 * 5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26 /** 27 * \file rastpos.c 28 * Raster position operations. 29 */ 30 31 #include "glheader.h" 32 #include "context.h" 33 #include "feedback.h" 34 #include "macros.h" 35 #include "mfeatures.h" 36 #include "mtypes.h" 37 #include "rastpos.h" 38 #include "state.h" 39 #include "main/dispatch.h" 40 41 42 #if FEATURE_rastpos 43 44 45 /** 46 * Helper function for all the RasterPos functions. 47 */ 48 static void 49 rasterpos(GLfloat x, GLfloat y, GLfloat z, GLfloat w) 50 { 51 GET_CURRENT_CONTEXT(ctx); 52 GLfloat p[4]; 53 54 p[0] = x; 55 p[1] = y; 56 p[2] = z; 57 p[3] = w; 58 59 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 60 FLUSH_CURRENT(ctx, 0); 61 62 if (ctx->NewState) 63 _mesa_update_state( ctx ); 64 65 ctx->Driver.RasterPos(ctx, p); 66 } 67 68 69 static void GLAPIENTRY 70 _mesa_RasterPos2d(GLdouble x, GLdouble y) 71 { 72 rasterpos((GLfloat)x, (GLfloat)y, (GLfloat)0.0, (GLfloat)1.0); 73 } 74 75 static void GLAPIENTRY 76 _mesa_RasterPos2f(GLfloat x, GLfloat y) 77 { 78 rasterpos(x, y, 0.0F, 1.0F); 79 } 80 81 static void GLAPIENTRY 82 _mesa_RasterPos2i(GLint x, GLint y) 83 { 84 rasterpos((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); 85 } 86 87 static void GLAPIENTRY 88 _mesa_RasterPos2s(GLshort x, GLshort y) 89 { 90 rasterpos(x, y, 0.0F, 1.0F); 91 } 92 93 static void GLAPIENTRY 94 _mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z) 95 { 96 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); 97 } 98 99 static void GLAPIENTRY 100 _mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z) 101 { 102 rasterpos(x, y, z, 1.0F); 103 } 104 105 static void GLAPIENTRY 106 _mesa_RasterPos3i(GLint x, GLint y, GLint z) 107 { 108 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); 109 } 110 111 static void GLAPIENTRY 112 _mesa_RasterPos3s(GLshort x, GLshort y, GLshort z) 113 { 114 rasterpos(x, y, z, 1.0F); 115 } 116 117 static void GLAPIENTRY 118 _mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w) 119 { 120 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); 121 } 122 123 static void GLAPIENTRY 124 _mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w) 125 { 126 rasterpos(x, y, z, w); 127 } 128 129 static void GLAPIENTRY 130 _mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w) 131 { 132 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); 133 } 134 135 static void GLAPIENTRY 136 _mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w) 137 { 138 rasterpos(x, y, z, w); 139 } 140 141 static void GLAPIENTRY 142 _mesa_RasterPos2dv(const GLdouble *v) 143 { 144 rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); 145 } 146 147 static void GLAPIENTRY 148 _mesa_RasterPos2fv(const GLfloat *v) 149 { 150 rasterpos(v[0], v[1], 0.0F, 1.0F); 151 } 152 153 static void GLAPIENTRY 154 _mesa_RasterPos2iv(const GLint *v) 155 { 156 rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); 157 } 158 159 static void GLAPIENTRY 160 _mesa_RasterPos2sv(const GLshort *v) 161 { 162 rasterpos(v[0], v[1], 0.0F, 1.0F); 163 } 164 165 static void GLAPIENTRY 166 _mesa_RasterPos3dv(const GLdouble *v) 167 { 168 rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); 169 } 170 171 static void GLAPIENTRY 172 _mesa_RasterPos3fv(const GLfloat *v) 173 { 174 rasterpos(v[0], v[1], v[2], 1.0F); 175 } 176 177 static void GLAPIENTRY 178 _mesa_RasterPos3iv(const GLint *v) 179 { 180 rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); 181 } 182 183 static void GLAPIENTRY 184 _mesa_RasterPos3sv(const GLshort *v) 185 { 186 rasterpos(v[0], v[1], v[2], 1.0F); 187 } 188 189 static void GLAPIENTRY 190 _mesa_RasterPos4dv(const GLdouble *v) 191 { 192 rasterpos((GLfloat) v[0], (GLfloat) v[1], 193 (GLfloat) v[2], (GLfloat) v[3]); 194 } 195 196 static void GLAPIENTRY 197 _mesa_RasterPos4fv(const GLfloat *v) 198 { 199 rasterpos(v[0], v[1], v[2], v[3]); 200 } 201 202 static void GLAPIENTRY 203 _mesa_RasterPos4iv(const GLint *v) 204 { 205 rasterpos((GLfloat) v[0], (GLfloat) v[1], 206 (GLfloat) v[2], (GLfloat) v[3]); 207 } 208 209 static void GLAPIENTRY 210 _mesa_RasterPos4sv(const GLshort *v) 211 { 212 rasterpos(v[0], v[1], v[2], v[3]); 213 } 214 215 216 /**********************************************************************/ 217 /*** GL_ARB_window_pos / GL_MESA_window_pos ***/ 218 /**********************************************************************/ 219 220 221 /** 222 * All glWindowPosMESA and glWindowPosARB commands call this function to 223 * update the current raster position. 224 */ 225 static void 226 window_pos3f(GLfloat x, GLfloat y, GLfloat z) 227 { 228 GET_CURRENT_CONTEXT(ctx); 229 GLfloat z2; 230 231 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); 232 FLUSH_CURRENT(ctx, 0); 233 234 z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near) 235 + ctx->Viewport.Near; 236 237 /* set raster position */ 238 ctx->Current.RasterPos[0] = x; 239 ctx->Current.RasterPos[1] = y; 240 ctx->Current.RasterPos[2] = z2; 241 ctx->Current.RasterPos[3] = 1.0F; 242 243 ctx->Current.RasterPosValid = GL_TRUE; 244 245 if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT) 246 ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0]; 247 else 248 ctx->Current.RasterDistance = 0.0; 249 250 /* raster color = current color or index */ 251 ctx->Current.RasterColor[0] 252 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][0], 0.0F, 1.0F); 253 ctx->Current.RasterColor[1] 254 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][1], 0.0F, 1.0F); 255 ctx->Current.RasterColor[2] 256 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][2], 0.0F, 1.0F); 257 ctx->Current.RasterColor[3] 258 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][3], 0.0F, 1.0F); 259 ctx->Current.RasterSecondaryColor[0] 260 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][0], 0.0F, 1.0F); 261 ctx->Current.RasterSecondaryColor[1] 262 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][1], 0.0F, 1.0F); 263 ctx->Current.RasterSecondaryColor[2] 264 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][2], 0.0F, 1.0F); 265 ctx->Current.RasterSecondaryColor[3] 266 = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][3], 0.0F, 1.0F); 267 268 /* raster texcoord = current texcoord */ 269 { 270 GLuint texSet; 271 for (texSet = 0; texSet < ctx->Const.MaxTextureCoordUnits; texSet++) { 272 assert(texSet < Elements(ctx->Current.RasterTexCoords)); 273 COPY_4FV( ctx->Current.RasterTexCoords[texSet], 274 ctx->Current.Attrib[VERT_ATTRIB_TEX0 + texSet] ); 275 } 276 } 277 278 if (ctx->RenderMode==GL_SELECT) { 279 _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] ); 280 } 281 } 282 283 284 /* This is just to support the GL_MESA_window_pos version */ 285 static void 286 window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w) 287 { 288 GET_CURRENT_CONTEXT(ctx); 289 window_pos3f(x, y, z); 290 ctx->Current.RasterPos[3] = w; 291 } 292 293 294 static void GLAPIENTRY 295 _mesa_WindowPos2dMESA(GLdouble x, GLdouble y) 296 { 297 window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); 298 } 299 300 static void GLAPIENTRY 301 _mesa_WindowPos2fMESA(GLfloat x, GLfloat y) 302 { 303 window_pos4f(x, y, 0.0F, 1.0F); 304 } 305 306 static void GLAPIENTRY 307 _mesa_WindowPos2iMESA(GLint x, GLint y) 308 { 309 window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); 310 } 311 312 static void GLAPIENTRY 313 _mesa_WindowPos2sMESA(GLshort x, GLshort y) 314 { 315 window_pos4f(x, y, 0.0F, 1.0F); 316 } 317 318 static void GLAPIENTRY 319 _mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z) 320 { 321 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); 322 } 323 324 static void GLAPIENTRY 325 _mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z) 326 { 327 window_pos4f(x, y, z, 1.0F); 328 } 329 330 static void GLAPIENTRY 331 _mesa_WindowPos3iMESA(GLint x, GLint y, GLint z) 332 { 333 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); 334 } 335 336 static void GLAPIENTRY 337 _mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z) 338 { 339 window_pos4f(x, y, z, 1.0F); 340 } 341 342 static void GLAPIENTRY 343 _mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w) 344 { 345 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); 346 } 347 348 static void GLAPIENTRY 349 _mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w) 350 { 351 window_pos4f(x, y, z, w); 352 } 353 354 static void GLAPIENTRY 355 _mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w) 356 { 357 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); 358 } 359 360 static void GLAPIENTRY 361 _mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w) 362 { 363 window_pos4f(x, y, z, w); 364 } 365 366 static void GLAPIENTRY 367 _mesa_WindowPos2dvMESA(const GLdouble *v) 368 { 369 window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); 370 } 371 372 static void GLAPIENTRY 373 _mesa_WindowPos2fvMESA(const GLfloat *v) 374 { 375 window_pos4f(v[0], v[1], 0.0F, 1.0F); 376 } 377 378 static void GLAPIENTRY 379 _mesa_WindowPos2ivMESA(const GLint *v) 380 { 381 window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); 382 } 383 384 static void GLAPIENTRY 385 _mesa_WindowPos2svMESA(const GLshort *v) 386 { 387 window_pos4f(v[0], v[1], 0.0F, 1.0F); 388 } 389 390 static void GLAPIENTRY 391 _mesa_WindowPos3dvMESA(const GLdouble *v) 392 { 393 window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); 394 } 395 396 static void GLAPIENTRY 397 _mesa_WindowPos3fvMESA(const GLfloat *v) 398 { 399 window_pos4f(v[0], v[1], v[2], 1.0); 400 } 401 402 static void GLAPIENTRY 403 _mesa_WindowPos3ivMESA(const GLint *v) 404 { 405 window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); 406 } 407 408 static void GLAPIENTRY 409 _mesa_WindowPos3svMESA(const GLshort *v) 410 { 411 window_pos4f(v[0], v[1], v[2], 1.0F); 412 } 413 414 static void GLAPIENTRY 415 _mesa_WindowPos4dvMESA(const GLdouble *v) 416 { 417 window_pos4f((GLfloat) v[0], (GLfloat) v[1], 418 (GLfloat) v[2], (GLfloat) v[3]); 419 } 420 421 static void GLAPIENTRY 422 _mesa_WindowPos4fvMESA(const GLfloat *v) 423 { 424 window_pos4f(v[0], v[1], v[2], v[3]); 425 } 426 427 static void GLAPIENTRY 428 _mesa_WindowPos4ivMESA(const GLint *v) 429 { 430 window_pos4f((GLfloat) v[0], (GLfloat) v[1], 431 (GLfloat) v[2], (GLfloat) v[3]); 432 } 433 434 static void GLAPIENTRY 435 _mesa_WindowPos4svMESA(const GLshort *v) 436 { 437 window_pos4f(v[0], v[1], v[2], v[3]); 438 } 439 440 441 #if 0 442 443 /* 444 * OpenGL implementation of glWindowPos*MESA() 445 */ 446 void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w ) 447 { 448 GLfloat fx, fy; 449 450 /* Push current matrix mode and viewport attributes */ 451 glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT ); 452 453 /* Setup projection parameters */ 454 glMatrixMode( GL_PROJECTION ); 455 glPushMatrix(); 456 glLoadIdentity(); 457 glMatrixMode( GL_MODELVIEW ); 458 glPushMatrix(); 459 glLoadIdentity(); 460 461 glDepthRange( z, z ); 462 glViewport( (int) x - 1, (int) y - 1, 2, 2 ); 463 464 /* set the raster (window) position */ 465 fx = x - (int) x; 466 fy = y - (int) y; 467 glRasterPos4f( fx, fy, 0.0, w ); 468 469 /* restore matrices, viewport and matrix mode */ 470 glPopMatrix(); 471 glMatrixMode( GL_PROJECTION ); 472 glPopMatrix(); 473 474 glPopAttrib(); 475 } 476 477 #endif 478 479 480 void 481 _mesa_init_rastpos_dispatch(struct _glapi_table *disp) 482 { 483 SET_RasterPos2f(disp, _mesa_RasterPos2f); 484 SET_RasterPos2fv(disp, _mesa_RasterPos2fv); 485 SET_RasterPos2i(disp, _mesa_RasterPos2i); 486 SET_RasterPos2iv(disp, _mesa_RasterPos2iv); 487 SET_RasterPos2d(disp, _mesa_RasterPos2d); 488 SET_RasterPos2dv(disp, _mesa_RasterPos2dv); 489 SET_RasterPos2s(disp, _mesa_RasterPos2s); 490 SET_RasterPos2sv(disp, _mesa_RasterPos2sv); 491 SET_RasterPos3d(disp, _mesa_RasterPos3d); 492 SET_RasterPos3dv(disp, _mesa_RasterPos3dv); 493 SET_RasterPos3f(disp, _mesa_RasterPos3f); 494 SET_RasterPos3fv(disp, _mesa_RasterPos3fv); 495 SET_RasterPos3i(disp, _mesa_RasterPos3i); 496 SET_RasterPos3iv(disp, _mesa_RasterPos3iv); 497 SET_RasterPos3s(disp, _mesa_RasterPos3s); 498 SET_RasterPos3sv(disp, _mesa_RasterPos3sv); 499 SET_RasterPos4d(disp, _mesa_RasterPos4d); 500 SET_RasterPos4dv(disp, _mesa_RasterPos4dv); 501 SET_RasterPos4f(disp, _mesa_RasterPos4f); 502 SET_RasterPos4fv(disp, _mesa_RasterPos4fv); 503 SET_RasterPos4i(disp, _mesa_RasterPos4i); 504 SET_RasterPos4iv(disp, _mesa_RasterPos4iv); 505 SET_RasterPos4s(disp, _mesa_RasterPos4s); 506 SET_RasterPos4sv(disp, _mesa_RasterPos4sv); 507 508 /* 197. GL_MESA_window_pos */ 509 SET_WindowPos2dMESA(disp, _mesa_WindowPos2dMESA); 510 SET_WindowPos2dvMESA(disp, _mesa_WindowPos2dvMESA); 511 SET_WindowPos2fMESA(disp, _mesa_WindowPos2fMESA); 512 SET_WindowPos2fvMESA(disp, _mesa_WindowPos2fvMESA); 513 SET_WindowPos2iMESA(disp, _mesa_WindowPos2iMESA); 514 SET_WindowPos2ivMESA(disp, _mesa_WindowPos2ivMESA); 515 SET_WindowPos2sMESA(disp, _mesa_WindowPos2sMESA); 516 SET_WindowPos2svMESA(disp, _mesa_WindowPos2svMESA); 517 SET_WindowPos3dMESA(disp, _mesa_WindowPos3dMESA); 518 SET_WindowPos3dvMESA(disp, _mesa_WindowPos3dvMESA); 519 SET_WindowPos3fMESA(disp, _mesa_WindowPos3fMESA); 520 SET_WindowPos3fvMESA(disp, _mesa_WindowPos3fvMESA); 521 SET_WindowPos3iMESA(disp, _mesa_WindowPos3iMESA); 522 SET_WindowPos3ivMESA(disp, _mesa_WindowPos3ivMESA); 523 SET_WindowPos3sMESA(disp, _mesa_WindowPos3sMESA); 524 SET_WindowPos3svMESA(disp, _mesa_WindowPos3svMESA); 525 SET_WindowPos4dMESA(disp, _mesa_WindowPos4dMESA); 526 SET_WindowPos4dvMESA(disp, _mesa_WindowPos4dvMESA); 527 SET_WindowPos4fMESA(disp, _mesa_WindowPos4fMESA); 528 SET_WindowPos4fvMESA(disp, _mesa_WindowPos4fvMESA); 529 SET_WindowPos4iMESA(disp, _mesa_WindowPos4iMESA); 530 SET_WindowPos4ivMESA(disp, _mesa_WindowPos4ivMESA); 531 SET_WindowPos4sMESA(disp, _mesa_WindowPos4sMESA); 532 SET_WindowPos4svMESA(disp, _mesa_WindowPos4svMESA); 533 } 534 535 536 #endif /* FEATURE_rastpos */ 537 538 539 /**********************************************************************/ 540 /** \name Initialization */ 541 /**********************************************************************/ 542 /*@{*/ 543 544 /** 545 * Initialize the context current raster position information. 546 * 547 * \param ctx GL context. 548 * 549 * Initialize the current raster position information in 550 * __struct gl_contextRec::Current, and adds the extension entry points to the 551 * dispatcher. 552 */ 553 void _mesa_init_rastpos( struct gl_context * ctx ) 554 { 555 int i; 556 557 ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 ); 558 ctx->Current.RasterDistance = 0.0; 559 ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 ); 560 ASSIGN_4V( ctx->Current.RasterSecondaryColor, 0.0, 0.0, 0.0, 1.0 ); 561 for (i = 0; i < Elements(ctx->Current.RasterTexCoords); i++) 562 ASSIGN_4V( ctx->Current.RasterTexCoords[i], 0.0, 0.0, 0.0, 1.0 ); 563 ctx->Current.RasterPosValid = GL_TRUE; 564 } 565 566 /*@}*/ 567
