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 "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    COPY_4FV( ctx->Current.RasterTexCoords, ctx->Current.Attrib[VERT_ATTRIB_TEX] );
 270
 271    if (ctx->RenderMode==GL_SELECT) {
 272       _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
 273    }
 274 }
 275
 276
 277 /* This is just to support the GL_MESA_window_pos version */
 278 static void
 279 window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 280 {
 281    GET_CURRENT_CONTEXT(ctx);
 282    window_pos3f(x, y, z);
 283    ctx->Current.RasterPos[3] = w;
 284 }
 285
 286
 287 static void GLAPIENTRY
 288 _mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
 289 {
 290    window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
 291 }
 292
 293 static void GLAPIENTRY
 294 _mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
 295 {
 296    window_pos4f(x, y, 0.0F, 1.0F);
 297 }
 298
 299 static void GLAPIENTRY
 300 _mesa_WindowPos2iMESA(GLint x, GLint y)
 301 {
 302    window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
 303 }
 304
 305 static void GLAPIENTRY
 306 _mesa_WindowPos2sMESA(GLshort x, GLshort y)
 307 {
 308    window_pos4f(x, y, 0.0F, 1.0F);
 309 }
 310
 311 static void GLAPIENTRY
 312 _mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
 313 {
 314    window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
 315 }
 316
 317 static void GLAPIENTRY
 318 _mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
 319 {
 320    window_pos4f(x, y, z, 1.0F);
 321 }
 322
 323 static void GLAPIENTRY
 324 _mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
 325 {
 326    window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
 327 }
 328
 329 static void GLAPIENTRY
 330 _mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
 331 {
 332    window_pos4f(x, y, z, 1.0F);
 333 }
 334
 335 static void GLAPIENTRY
 336 _mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
 337 {
 338    window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
 339 }
 340
 341 static void GLAPIENTRY
 342 _mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
 343 {
 344    window_pos4f(x, y, z, w);
 345 }
 346
 347 static void GLAPIENTRY
 348 _mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
 349 {
 350    window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
 351 }
 352
 353 static void GLAPIENTRY
 354 _mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
 355 {
 356    window_pos4f(x, y, z, w);
 357 }
 358
 359 static void GLAPIENTRY
 360 _mesa_WindowPos2dvMESA(const GLdouble *v)
 361 {
 362    window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
 363 }
 364
 365 static void GLAPIENTRY
 366 _mesa_WindowPos2fvMESA(const GLfloat *v)
 367 {
 368    window_pos4f(v[0], v[1], 0.0F, 1.0F);
 369 }
 370
 371 static void GLAPIENTRY
 372 _mesa_WindowPos2ivMESA(const GLint *v)
 373 {
 374    window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
 375 }
 376
 377 static void GLAPIENTRY
 378 _mesa_WindowPos2svMESA(const GLshort *v)
 379 {
 380    window_pos4f(v[0], v[1], 0.0F, 1.0F);
 381 }
 382
 383 static void GLAPIENTRY
 384 _mesa_WindowPos3dvMESA(const GLdouble *v)
 385 {
 386    window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
 387 }
 388
 389 static void GLAPIENTRY
 390 _mesa_WindowPos3fvMESA(const GLfloat *v)
 391 {
 392    window_pos4f(v[0], v[1], v[2], 1.0);
 393 }
 394
 395 static void GLAPIENTRY
 396 _mesa_WindowPos3ivMESA(const GLint *v)
 397 {
 398    window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
 399 }
 400
 401 static void GLAPIENTRY
 402 _mesa_WindowPos3svMESA(const GLshort *v)
 403 {
 404    window_pos4f(v[0], v[1], v[2], 1.0F);
 405 }
 406
 407 static void GLAPIENTRY
 408 _mesa_WindowPos4dvMESA(const GLdouble *v)
 409 {
 410    window_pos4f((GLfloat) v[0], (GLfloat) v[1],
 411                          (GLfloat) v[2], (GLfloat) v[3]);
 412 }
 413
 414 static void GLAPIENTRY
 415 _mesa_WindowPos4fvMESA(const GLfloat *v)
 416 {
 417    window_pos4f(v[0], v[1], v[2], v[3]);
 418 }
 419
 420 static void GLAPIENTRY
 421 _mesa_WindowPos4ivMESA(const GLint *v)
 422 {
 423    window_pos4f((GLfloat) v[0], (GLfloat) v[1],
 424                          (GLfloat) v[2], (GLfloat) v[3]);
 425 }
 426
 427 static void GLAPIENTRY
 428 _mesa_WindowPos4svMESA(const GLshort *v)
 429 {
 430    window_pos4f(v[0], v[1], v[2], v[3]);
 431 }
 432
 433
 434 #if 0
 435
 436 /*
 437  * OpenGL implementation of glWindowPos*MESA()
 438  */
 439 void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
 440 {
 441    GLfloat fx, fy;
 442
 443    /* Push current matrix mode and viewport attributes */
 444    glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT );
 445
 446    /* Setup projection parameters */
 447    glMatrixMode( GL_PROJECTION );
 448    glPushMatrix();
 449    glLoadIdentity();
 450    glMatrixMode( GL_MODELVIEW );
 451    glPushMatrix();
 452    glLoadIdentity();
 453
 454    glDepthRange( z, z );
 455    glViewport( (int) x - 1, (int) y - 1, 2, 2 );
 456
 457    /* set the raster (window) position */
 458    fx = x - (int) x;
 459    fy = y - (int) y;
 460    glRasterPos4f( fx, fy, 0.0, w );
 461
 462    /* restore matrices, viewport and matrix mode */
 463    glPopMatrix();
 464    glMatrixMode( GL_PROJECTION );
 465    glPopMatrix();
 466
 467    glPopAttrib();
 468 }
 469
 470 #endif
 471
 472
 473 void
 474 _mesa_init_rastpos_dispatch(struct _glapi_table *disp)
 475 {
 476    SET_RasterPos2f(disp, _mesa_RasterPos2f);
 477    SET_RasterPos2fv(disp, _mesa_RasterPos2fv);
 478    SET_RasterPos2i(disp, _mesa_RasterPos2i);
 479    SET_RasterPos2iv(disp, _mesa_RasterPos2iv);
 480    SET_RasterPos2d(disp, _mesa_RasterPos2d);
 481    SET_RasterPos2dv(disp, _mesa_RasterPos2dv);
 482    SET_RasterPos2s(disp, _mesa_RasterPos2s);
 483    SET_RasterPos2sv(disp, _mesa_RasterPos2sv);
 484    SET_RasterPos3d(disp, _mesa_RasterPos3d);
 485    SET_RasterPos3dv(disp, _mesa_RasterPos3dv);
 486    SET_RasterPos3f(disp, _mesa_RasterPos3f);
 487    SET_RasterPos3fv(disp, _mesa_RasterPos3fv);
 488    SET_RasterPos3i(disp, _mesa_RasterPos3i);
 489    SET_RasterPos3iv(disp, _mesa_RasterPos3iv);
 490    SET_RasterPos3s(disp, _mesa_RasterPos3s);
 491    SET_RasterPos3sv(disp, _mesa_RasterPos3sv);
 492    SET_RasterPos4d(disp, _mesa_RasterPos4d);
 493    SET_RasterPos4dv(disp, _mesa_RasterPos4dv);
 494    SET_RasterPos4f(disp, _mesa_RasterPos4f);
 495    SET_RasterPos4fv(disp, _mesa_RasterPos4fv);
 496    SET_RasterPos4i(disp, _mesa_RasterPos4i);
 497    SET_RasterPos4iv(disp, _mesa_RasterPos4iv);
 498    SET_RasterPos4s(disp, _mesa_RasterPos4s);
 499    SET_RasterPos4sv(disp, _mesa_RasterPos4sv);
 500
 501    /* 197. GL_MESA_window_pos */
 502    SET_WindowPos2dMESA(disp, _mesa_WindowPos2dMESA);
 503    SET_WindowPos2dvMESA(disp, _mesa_WindowPos2dvMESA);
 504    SET_WindowPos2fMESA(disp, _mesa_WindowPos2fMESA);
 505    SET_WindowPos2fvMESA(disp, _mesa_WindowPos2fvMESA);
 506    SET_WindowPos2iMESA(disp, _mesa_WindowPos2iMESA);
 507    SET_WindowPos2ivMESA(disp, _mesa_WindowPos2ivMESA);
 508    SET_WindowPos2sMESA(disp, _mesa_WindowPos2sMESA);
 509    SET_WindowPos2svMESA(disp, _mesa_WindowPos2svMESA);
 510    SET_WindowPos3dMESA(disp, _mesa_WindowPos3dMESA);
 511    SET_WindowPos3dvMESA(disp, _mesa_WindowPos3dvMESA);
 512    SET_WindowPos3fMESA(disp, _mesa_WindowPos3fMESA);
 513    SET_WindowPos3fvMESA(disp, _mesa_WindowPos3fvMESA);
 514    SET_WindowPos3iMESA(disp, _mesa_WindowPos3iMESA);
 515    SET_WindowPos3ivMESA(disp, _mesa_WindowPos3ivMESA);
 516    SET_WindowPos3sMESA(disp, _mesa_WindowPos3sMESA);
 517    SET_WindowPos3svMESA(disp, _mesa_WindowPos3svMESA);
 518    SET_WindowPos4dMESA(disp, _mesa_WindowPos4dMESA);
 519    SET_WindowPos4dvMESA(disp, _mesa_WindowPos4dvMESA);
 520    SET_WindowPos4fMESA(disp, _mesa_WindowPos4fMESA);
 521    SET_WindowPos4fvMESA(disp, _mesa_WindowPos4fvMESA);
 522    SET_WindowPos4iMESA(disp, _mesa_WindowPos4iMESA);
 523    SET_WindowPos4ivMESA(disp, _mesa_WindowPos4ivMESA);
 524    SET_WindowPos4sMESA(disp, _mesa_WindowPos4sMESA);
 525    SET_WindowPos4svMESA(disp, _mesa_WindowPos4svMESA);
 526 }
 527
 528
 529 #endif /* FEATURE_rastpos */
 530
 531
 532 /**********************************************************************/
 533 /** \name Initialization                                              */
 534 /**********************************************************************/
 535 /*@{*/
 536
 537 /**
 538  * Initialize the context current raster position information.
 539  *
 540  * \param ctx GL context.
 541  *
 542  * Initialize the current raster position information in
 543  * __struct gl_contextRec::Current, and adds the extension entry points to the
 544  * dispatcher.
 545  */
 546 void _mesa_init_rastpos( struct gl_context * ctx )
 547 {
 548    ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
 549    ctx->Current.RasterDistance = 0.0;
 550    ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
 551    ASSIGN_4V( ctx->Current.RasterSecondaryColor, 0.0, 0.0, 0.0, 1.0 );
 552    ASSIGN_4V( ctx->Current.RasterTexCoords, 0.0, 0.0, 0.0, 1.0 );
 553    ctx->Current.RasterPosValid = GL_TRUE;
 554 }
 555
 556 /*@}*/