2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
28 * Raster position operations.
35 #include "mfeatures.h"
39 #include "main/dispatch.h"
46 * Helper function for all the RasterPos functions.
49 rasterpos(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
51 GET_CURRENT_CONTEXT(ctx);
59 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
60 FLUSH_CURRENT(ctx, 0);
63 _mesa_update_state( ctx );
65 ctx->Driver.RasterPos(ctx, p);
69 static void GLAPIENTRY
70 _mesa_RasterPos2d(GLdouble x, GLdouble y)
72 rasterpos((GLfloat)x, (GLfloat)y, (GLfloat)0.0, (GLfloat)1.0);
75 static void GLAPIENTRY
76 _mesa_RasterPos2f(GLfloat x, GLfloat y)
78 rasterpos(x, y, 0.0F, 1.0F);
81 static void GLAPIENTRY
82 _mesa_RasterPos2i(GLint x, GLint y)
84 rasterpos((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
87 static void GLAPIENTRY
88 _mesa_RasterPos2s(GLshort x, GLshort y)
90 rasterpos(x, y, 0.0F, 1.0F);
93 static void GLAPIENTRY
94 _mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z)
96 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
99 static void GLAPIENTRY
100 _mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z)
102 rasterpos(x, y, z, 1.0F);
105 static void GLAPIENTRY
106 _mesa_RasterPos3i(GLint x, GLint y, GLint z)
108 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
111 static void GLAPIENTRY
112 _mesa_RasterPos3s(GLshort x, GLshort y, GLshort z)
114 rasterpos(x, y, z, 1.0F);
117 static void GLAPIENTRY
118 _mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
120 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
123 static void GLAPIENTRY
124 _mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
126 rasterpos(x, y, z, w);
129 static void GLAPIENTRY
130 _mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w)
132 rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
135 static void GLAPIENTRY
136 _mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w)
138 rasterpos(x, y, z, w);
141 static void GLAPIENTRY
142 _mesa_RasterPos2dv(const GLdouble *v)
144 rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
147 static void GLAPIENTRY
148 _mesa_RasterPos2fv(const GLfloat *v)
150 rasterpos(v[0], v[1], 0.0F, 1.0F);
153 static void GLAPIENTRY
154 _mesa_RasterPos2iv(const GLint *v)
156 rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
159 static void GLAPIENTRY
160 _mesa_RasterPos2sv(const GLshort *v)
162 rasterpos(v[0], v[1], 0.0F, 1.0F);
165 static void GLAPIENTRY
166 _mesa_RasterPos3dv(const GLdouble *v)
168 rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
171 static void GLAPIENTRY
172 _mesa_RasterPos3fv(const GLfloat *v)
174 rasterpos(v[0], v[1], v[2], 1.0F);
177 static void GLAPIENTRY
178 _mesa_RasterPos3iv(const GLint *v)
180 rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
183 static void GLAPIENTRY
184 _mesa_RasterPos3sv(const GLshort *v)
186 rasterpos(v[0], v[1], v[2], 1.0F);
189 static void GLAPIENTRY
190 _mesa_RasterPos4dv(const GLdouble *v)
192 rasterpos((GLfloat) v[0], (GLfloat) v[1],
193 (GLfloat) v[2], (GLfloat) v[3]);
196 static void GLAPIENTRY
197 _mesa_RasterPos4fv(const GLfloat *v)
199 rasterpos(v[0], v[1], v[2], v[3]);
202 static void GLAPIENTRY
203 _mesa_RasterPos4iv(const GLint *v)
205 rasterpos((GLfloat) v[0], (GLfloat) v[1],
206 (GLfloat) v[2], (GLfloat) v[3]);
209 static void GLAPIENTRY
210 _mesa_RasterPos4sv(const GLshort *v)
212 rasterpos(v[0], v[1], v[2], v[3]);
216 /**********************************************************************/
217 /*** GL_ARB_window_pos / GL_MESA_window_pos ***/
218 /**********************************************************************/
222 * All glWindowPosMESA and glWindowPosARB commands call this function to
223 * update the current raster position.
226 window_pos3f(GLfloat x, GLfloat y, GLfloat z)
228 GET_CURRENT_CONTEXT(ctx);
231 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
232 FLUSH_CURRENT(ctx, 0);
234 z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near)
235 + ctx->Viewport.Near;
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;
243 ctx->Current.RasterPosValid = GL_TRUE;
245 if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
246 ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
248 ctx->Current.RasterDistance = 0.0;
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);
268 /* raster texcoord = current texcoord */
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] );
278 if (ctx->RenderMode==GL_SELECT) {
279 _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
284 /* This is just to support the GL_MESA_window_pos version */
286 window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
288 GET_CURRENT_CONTEXT(ctx);
289 window_pos3f(x, y, z);
290 ctx->Current.RasterPos[3] = w;
294 static void GLAPIENTRY
295 _mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
297 window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
300 static void GLAPIENTRY
301 _mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
303 window_pos4f(x, y, 0.0F, 1.0F);
306 static void GLAPIENTRY
307 _mesa_WindowPos2iMESA(GLint x, GLint y)
309 window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
312 static void GLAPIENTRY
313 _mesa_WindowPos2sMESA(GLshort x, GLshort y)
315 window_pos4f(x, y, 0.0F, 1.0F);
318 static void GLAPIENTRY
319 _mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
321 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
324 static void GLAPIENTRY
325 _mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
327 window_pos4f(x, y, z, 1.0F);
330 static void GLAPIENTRY
331 _mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
333 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
336 static void GLAPIENTRY
337 _mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
339 window_pos4f(x, y, z, 1.0F);
342 static void GLAPIENTRY
343 _mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
345 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
348 static void GLAPIENTRY
349 _mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
351 window_pos4f(x, y, z, w);
354 static void GLAPIENTRY
355 _mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
357 window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
360 static void GLAPIENTRY
361 _mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
363 window_pos4f(x, y, z, w);
366 static void GLAPIENTRY
367 _mesa_WindowPos2dvMESA(const GLdouble *v)
369 window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
372 static void GLAPIENTRY
373 _mesa_WindowPos2fvMESA(const GLfloat *v)
375 window_pos4f(v[0], v[1], 0.0F, 1.0F);
378 static void GLAPIENTRY
379 _mesa_WindowPos2ivMESA(const GLint *v)
381 window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
384 static void GLAPIENTRY
385 _mesa_WindowPos2svMESA(const GLshort *v)
387 window_pos4f(v[0], v[1], 0.0F, 1.0F);
390 static void GLAPIENTRY
391 _mesa_WindowPos3dvMESA(const GLdouble *v)
393 window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
396 static void GLAPIENTRY
397 _mesa_WindowPos3fvMESA(const GLfloat *v)
399 window_pos4f(v[0], v[1], v[2], 1.0);
402 static void GLAPIENTRY
403 _mesa_WindowPos3ivMESA(const GLint *v)
405 window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
408 static void GLAPIENTRY
409 _mesa_WindowPos3svMESA(const GLshort *v)
411 window_pos4f(v[0], v[1], v[2], 1.0F);
414 static void GLAPIENTRY
415 _mesa_WindowPos4dvMESA(const GLdouble *v)
417 window_pos4f((GLfloat) v[0], (GLfloat) v[1],
418 (GLfloat) v[2], (GLfloat) v[3]);
421 static void GLAPIENTRY
422 _mesa_WindowPos4fvMESA(const GLfloat *v)
424 window_pos4f(v[0], v[1], v[2], v[3]);
427 static void GLAPIENTRY
428 _mesa_WindowPos4ivMESA(const GLint *v)
430 window_pos4f((GLfloat) v[0], (GLfloat) v[1],
431 (GLfloat) v[2], (GLfloat) v[3]);
434 static void GLAPIENTRY
435 _mesa_WindowPos4svMESA(const GLshort *v)
437 window_pos4f(v[0], v[1], v[2], v[3]);
444 * OpenGL implementation of glWindowPos*MESA()
446 void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
450 /* Push current matrix mode and viewport attributes */
451 glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT );
453 /* Setup projection parameters */
454 glMatrixMode( GL_PROJECTION );
457 glMatrixMode( GL_MODELVIEW );
461 glDepthRange( z, z );
462 glViewport( (int) x - 1, (int) y - 1, 2, 2 );
464 /* set the raster (window) position */
467 glRasterPos4f( fx, fy, 0.0, w );
469 /* restore matrices, viewport and matrix mode */
471 glMatrixMode( GL_PROJECTION );
481 _mesa_init_rastpos_dispatch(struct _glapi_table *disp)
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);
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);
536 #endif /* FEATURE_rastpos */
539 /**********************************************************************/
540 /** \name Initialization */
541 /**********************************************************************/
545 * Initialize the context current raster position information.
547 * \param ctx GL context.
549 * Initialize the current raster position information in
550 * __struct gl_contextRec::Current, and adds the extension entry points to the
553 void _mesa_init_rastpos( struct gl_context * ctx )
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;