reactos/dll/opengl/mesa/main/rastpos.c

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