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more detailed _mesa_error() strings
[mesa.git] / src / mesa / main / texstate.c
1 /* $Id: texstate.c,v 1.78 2002/09/08 17:29:16 brianp Exp $ */
2
3 /*
4 * Mesa 3-D graphics library
5 * Version: 4.1
6 *
7 * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27
28 #ifdef PC_HEADER
29 #include "all.h"
30 #else
31 #include "glheader.h"
32 #include "colormac.h"
33 #include "context.h"
34 #include "enums.h"
35 #include "extensions.h"
36 #include "macros.h"
37 #include "texobj.h"
38 #include "teximage.h"
39 #include "texstate.h"
40 #include "mtypes.h"
41 #include "math/m_xform.h"
42 #include "math/m_matrix.h"
43 #endif
44
45
46
47 #ifdef SPECIALCAST
48 /* Needed for an Amiga compiler */
49 #define ENUM_TO_FLOAT(X) ((GLfloat)(GLint)(X))
50 #define ENUM_TO_DOUBLE(X) ((GLdouble)(GLint)(X))
51 #else
52 /* all other compilers */
53 #define ENUM_TO_FLOAT(X) ((GLfloat)(X))
54 #define ENUM_TO_DOUBLE(X) ((GLdouble)(X))
55 #endif
56
57
58
59 void
60 _mesa_copy_texture_state( const GLcontext *src, GLcontext *dst )
61 {
62 GLuint i;
63
64 ASSERT(src);
65 ASSERT(dst);
66
67 dst->Texture.CurrentUnit = src->Texture.CurrentUnit;
68 dst->Texture._GenFlags = src->Texture._GenFlags;
69 dst->Texture._TexGenEnabled = src->Texture._TexGenEnabled;
70 dst->Texture._TexMatEnabled = src->Texture._TexMatEnabled;
71 dst->Texture.SharedPalette = src->Texture.SharedPalette;
72
73 /* per-unit state */
74 for (i = 0; i < src->Const.MaxTextureUnits; i++) {
75 dst->Texture.Unit[i].Enabled = src->Texture.Unit[i].Enabled;
76 dst->Texture.Unit[i].EnvMode = src->Texture.Unit[i].EnvMode;
77 COPY_4V(dst->Texture.Unit[i].EnvColor, src->Texture.Unit[i].EnvColor);
78 dst->Texture.Unit[i].TexGenEnabled = src->Texture.Unit[i].TexGenEnabled;
79 dst->Texture.Unit[i].GenModeS = src->Texture.Unit[i].GenModeS;
80 dst->Texture.Unit[i].GenModeT = src->Texture.Unit[i].GenModeT;
81 dst->Texture.Unit[i].GenModeR = src->Texture.Unit[i].GenModeR;
82 dst->Texture.Unit[i].GenModeQ = src->Texture.Unit[i].GenModeQ;
83 dst->Texture.Unit[i]._GenBitS = src->Texture.Unit[i]._GenBitS;
84 dst->Texture.Unit[i]._GenBitT = src->Texture.Unit[i]._GenBitT;
85 dst->Texture.Unit[i]._GenBitR = src->Texture.Unit[i]._GenBitR;
86 dst->Texture.Unit[i]._GenBitQ = src->Texture.Unit[i]._GenBitQ;
87 dst->Texture.Unit[i]._GenFlags = src->Texture.Unit[i]._GenFlags;
88 COPY_4V(dst->Texture.Unit[i].ObjectPlaneS, src->Texture.Unit[i].ObjectPlaneS);
89 COPY_4V(dst->Texture.Unit[i].ObjectPlaneT, src->Texture.Unit[i].ObjectPlaneT);
90 COPY_4V(dst->Texture.Unit[i].ObjectPlaneR, src->Texture.Unit[i].ObjectPlaneR);
91 COPY_4V(dst->Texture.Unit[i].ObjectPlaneQ, src->Texture.Unit[i].ObjectPlaneQ);
92 COPY_4V(dst->Texture.Unit[i].EyePlaneS, src->Texture.Unit[i].EyePlaneS);
93 COPY_4V(dst->Texture.Unit[i].EyePlaneT, src->Texture.Unit[i].EyePlaneT);
94 COPY_4V(dst->Texture.Unit[i].EyePlaneR, src->Texture.Unit[i].EyePlaneR);
95 COPY_4V(dst->Texture.Unit[i].EyePlaneQ, src->Texture.Unit[i].EyePlaneQ);
96 dst->Texture.Unit[i].LodBias = src->Texture.Unit[i].LodBias;
97
98 /* GL_EXT_texture_env_combine */
99 dst->Texture.Unit[i].CombineModeRGB = src->Texture.Unit[i].CombineModeRGB;
100 dst->Texture.Unit[i].CombineModeA = src->Texture.Unit[i].CombineModeA;
101 COPY_3V(dst->Texture.Unit[i].CombineSourceRGB, src->Texture.Unit[i].CombineSourceRGB);
102 COPY_3V(dst->Texture.Unit[i].CombineSourceA, src->Texture.Unit[i].CombineSourceA);
103 COPY_3V(dst->Texture.Unit[i].CombineOperandRGB, src->Texture.Unit[i].CombineOperandRGB);
104 COPY_3V(dst->Texture.Unit[i].CombineOperandA, src->Texture.Unit[i].CombineOperandA);
105 dst->Texture.Unit[i].CombineScaleShiftRGB = src->Texture.Unit[i].CombineScaleShiftRGB;
106 dst->Texture.Unit[i].CombineScaleShiftA = src->Texture.Unit[i].CombineScaleShiftA;
107
108 /* texture object state */
109 _mesa_copy_texture_object(dst->Texture.Unit[i].Current1D,
110 src->Texture.Unit[i].Current1D);
111 _mesa_copy_texture_object(dst->Texture.Unit[i].Current2D,
112 src->Texture.Unit[i].Current2D);
113 _mesa_copy_texture_object(dst->Texture.Unit[i].Current3D,
114 src->Texture.Unit[i].Current3D);
115 _mesa_copy_texture_object(dst->Texture.Unit[i].CurrentCubeMap,
116 src->Texture.Unit[i].CurrentCubeMap);
117 }
118 }
119
120
121 /**********************************************************************/
122 /* Texture Environment */
123 /**********************************************************************/
124
125
126 void
127 _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
128 {
129 GET_CURRENT_CONTEXT(ctx);
130 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
131 ASSERT_OUTSIDE_BEGIN_END(ctx);
132
133 #define TE_ERROR(errCode, msg, value) \
134 _mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value));
135
136 if (target == GL_TEXTURE_ENV) {
137 switch (pname) {
138 case GL_TEXTURE_ENV_MODE:
139 {
140 const GLenum mode = (GLenum) (GLint) *param;
141 if (mode == GL_MODULATE ||
142 mode == GL_BLEND ||
143 mode == GL_DECAL ||
144 mode == GL_REPLACE ||
145 (mode == GL_ADD && ctx->Extensions.EXT_texture_env_add) ||
146 (mode == GL_COMBINE_EXT &&
147 (ctx->Extensions.EXT_texture_env_combine ||
148 ctx->Extensions.ARB_texture_env_combine))) {
149 /* legal */
150 if (texUnit->EnvMode == mode)
151 return;
152 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
153 texUnit->EnvMode = mode;
154 }
155 else {
156 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
157 return;
158 }
159 }
160 break;
161 case GL_TEXTURE_ENV_COLOR:
162 {
163 GLfloat tmp[4];
164 tmp[0] = CLAMP( param[0], 0.0F, 1.0F );
165 tmp[1] = CLAMP( param[1], 0.0F, 1.0F );
166 tmp[2] = CLAMP( param[2], 0.0F, 1.0F );
167 tmp[3] = CLAMP( param[3], 0.0F, 1.0F );
168 if (TEST_EQ_4V(tmp, texUnit->EnvColor))
169 return;
170 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
171 COPY_4FV(texUnit->EnvColor, tmp);
172 }
173 break;
174 case GL_COMBINE_RGB_EXT:
175 if (ctx->Extensions.EXT_texture_env_combine ||
176 ctx->Extensions.ARB_texture_env_combine) {
177 const GLenum mode = (GLenum) (GLint) *param;
178 switch (mode) {
179 case GL_REPLACE:
180 case GL_MODULATE:
181 case GL_ADD:
182 case GL_ADD_SIGNED_EXT:
183 case GL_INTERPOLATE_EXT:
184 /* OK */
185 break;
186 case GL_SUBTRACT_ARB:
187 if (!ctx->Extensions.ARB_texture_env_combine) {
188 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
189 return;
190 }
191 break;
192 case GL_DOT3_RGB_EXT:
193 case GL_DOT3_RGBA_EXT:
194 if (!ctx->Extensions.EXT_texture_env_dot3) {
195 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
196 return;
197 }
198 break;
199 case GL_DOT3_RGB_ARB:
200 case GL_DOT3_RGBA_ARB:
201 if (!ctx->Extensions.ARB_texture_env_dot3) {
202 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
203 return;
204 }
205 break;
206 default:
207 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
208 return;
209 }
210 if (texUnit->CombineModeRGB == mode)
211 return;
212 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
213 texUnit->CombineModeRGB = mode;
214 }
215 else {
216 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
217 return;
218 }
219 break;
220 case GL_COMBINE_ALPHA_EXT:
221 if (ctx->Extensions.EXT_texture_env_combine ||
222 ctx->Extensions.ARB_texture_env_combine) {
223 const GLenum mode = (GLenum) (GLint) *param;
224 if (mode == GL_REPLACE ||
225 mode == GL_MODULATE ||
226 mode == GL_ADD ||
227 mode == GL_ADD_SIGNED_EXT ||
228 mode == GL_INTERPOLATE_EXT ||
229 (mode == GL_SUBTRACT_ARB &&
230 ctx->Extensions.ARB_texture_env_combine)) {
231 /* legal */
232 if (texUnit->CombineModeA == mode)
233 return;
234 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
235 texUnit->CombineModeA = mode;
236 }
237 else {
238 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
239 return;
240 }
241 }
242 else {
243 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
244 return;
245 }
246 break;
247 case GL_SOURCE0_RGB_EXT:
248 case GL_SOURCE1_RGB_EXT:
249 case GL_SOURCE2_RGB_EXT:
250 if (ctx->Extensions.EXT_texture_env_combine ||
251 ctx->Extensions.ARB_texture_env_combine) {
252 const GLenum source = (GLenum) (GLint) *param;
253 const GLuint s = pname - GL_SOURCE0_RGB_EXT;
254 if (source == GL_TEXTURE ||
255 source == GL_CONSTANT_EXT ||
256 source == GL_PRIMARY_COLOR_EXT ||
257 source == GL_PREVIOUS_EXT ||
258 (ctx->Extensions.ARB_texture_env_crossbar &&
259 source >= GL_TEXTURE0_ARB &&
260 source < GL_TEXTURE0_ARB + ctx->Const.MaxTextureUnits)) {
261 /* legal */
262 if (texUnit->CombineSourceRGB[s] == source)
263 return;
264 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
265 texUnit->CombineSourceRGB[s] = source;
266 }
267 else {
268 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
269 return;
270 }
271 }
272 else {
273 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
274 return;
275 }
276 break;
277 case GL_SOURCE0_ALPHA_EXT:
278 case GL_SOURCE1_ALPHA_EXT:
279 case GL_SOURCE2_ALPHA_EXT:
280 if (ctx->Extensions.EXT_texture_env_combine ||
281 ctx->Extensions.ARB_texture_env_combine) {
282 const GLenum source = (GLenum) (GLint) *param;
283 const GLuint s = pname - GL_SOURCE0_ALPHA_EXT;
284 if (source == GL_TEXTURE ||
285 source == GL_CONSTANT_EXT ||
286 source == GL_PRIMARY_COLOR_EXT ||
287 source == GL_PREVIOUS_EXT ||
288 (ctx->Extensions.ARB_texture_env_crossbar &&
289 source >= GL_TEXTURE0_ARB &&
290 source < GL_TEXTURE0_ARB + ctx->Const.MaxTextureUnits)) {
291 /* legal */
292 if (texUnit->CombineSourceA[s] == source)
293 return;
294 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
295 texUnit->CombineSourceA[s] = source;
296 }
297 else {
298 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
299 return;
300 }
301 }
302 else {
303 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
304 return;
305 }
306 break;
307 case GL_OPERAND0_RGB_EXT:
308 case GL_OPERAND1_RGB_EXT:
309 if (ctx->Extensions.EXT_texture_env_combine ||
310 ctx->Extensions.ARB_texture_env_combine) {
311 const GLenum operand = (GLenum) (GLint) *param;
312 const GLuint s = pname - GL_OPERAND0_RGB_EXT;
313 switch (operand) {
314 case GL_SRC_COLOR:
315 case GL_ONE_MINUS_SRC_COLOR:
316 case GL_SRC_ALPHA:
317 case GL_ONE_MINUS_SRC_ALPHA:
318 if (texUnit->CombineOperandRGB[s] == operand)
319 return;
320 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
321 texUnit->CombineOperandRGB[s] = operand;
322 break;
323 default:
324 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
325 return;
326 }
327 }
328 else {
329 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
330 return;
331 }
332 break;
333 case GL_OPERAND0_ALPHA_EXT:
334 case GL_OPERAND1_ALPHA_EXT:
335 if (ctx->Extensions.EXT_texture_env_combine ||
336 ctx->Extensions.ARB_texture_env_combine) {
337 const GLenum operand = (GLenum) (GLint) *param;
338 switch (operand) {
339 case GL_SRC_ALPHA:
340 case GL_ONE_MINUS_SRC_ALPHA:
341 if (texUnit->CombineOperandA[pname-GL_OPERAND0_ALPHA_EXT] ==
342 operand)
343 return;
344 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
345 texUnit->CombineOperandA[pname-GL_OPERAND0_ALPHA_EXT] = operand;
346 break;
347 default:
348 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
349 return;
350 }
351 }
352 else {
353 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
354 return;
355 }
356 break;
357 case GL_OPERAND2_RGB_EXT:
358 if (ctx->Extensions.EXT_texture_env_combine ||
359 ctx->Extensions.ARB_texture_env_combine) {
360 const GLenum operand = (GLenum) (GLint) *param;
361 switch (operand) {
362 case GL_SRC_COLOR: /* ARB combine only */
363 case GL_ONE_MINUS_SRC_COLOR: /* ARB combine only */
364 case GL_SRC_ALPHA:
365 case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
366 if (texUnit->CombineOperandRGB[2] == operand)
367 return;
368 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
369 texUnit->CombineOperandRGB[2] = operand;
370 default:
371 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
372 return;
373 }
374 }
375 else {
376 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
377 return;
378 }
379 break;
380 case GL_OPERAND2_ALPHA_EXT:
381 if (ctx->Extensions.EXT_texture_env_combine ||
382 ctx->Extensions.ARB_texture_env_combine) {
383 const GLenum operand = (GLenum) (GLint) *param;
384 switch (operand) {
385 case GL_SRC_ALPHA:
386 case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
387 if (texUnit->CombineOperandA[2] == operand)
388 return;
389 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
390 texUnit->CombineOperandA[2] = operand;
391 break;
392 default:
393 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
394 return;
395 }
396 }
397 else {
398 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
399 return;
400 }
401 break;
402 case GL_RGB_SCALE_EXT:
403 if (ctx->Extensions.EXT_texture_env_combine ||
404 ctx->Extensions.ARB_texture_env_combine) {
405 GLuint newshift;
406 if (*param == 1.0) {
407 newshift = 0;
408 }
409 else if (*param == 2.0) {
410 newshift = 1;
411 }
412 else if (*param == 4.0) {
413 newshift = 2;
414 }
415 else {
416 _mesa_error( ctx, GL_INVALID_VALUE,
417 "glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );
418 return;
419 }
420 if (texUnit->CombineScaleShiftRGB == newshift)
421 return;
422 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
423 texUnit->CombineScaleShiftRGB = newshift;
424 }
425 else {
426 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
427 return;
428 }
429 break;
430 case GL_ALPHA_SCALE:
431 if (ctx->Extensions.EXT_texture_env_combine ||
432 ctx->Extensions.ARB_texture_env_combine) {
433 GLuint newshift;
434 if (*param == 1.0) {
435 newshift = 0;
436 }
437 else if (*param == 2.0) {
438 newshift = 1;
439 }
440 else if (*param == 4.0) {
441 newshift = 2;
442 }
443 else {
444 _mesa_error( ctx, GL_INVALID_VALUE,
445 "glTexEnv(GL_ALPHA_SCALE not 1, 2 or 4)" );
446 return;
447 }
448 if (texUnit->CombineScaleShiftA == newshift)
449 return;
450 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
451 texUnit->CombineScaleShiftA = newshift;
452 }
453 else {
454 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
455 return;
456 }
457 break;
458 default:
459 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
460 return;
461 }
462 }
463 else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
464 /* GL_EXT_texture_lod_bias */
465 if (!ctx->Extensions.EXT_texture_lod_bias) {
466 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
467 return;
468 }
469 if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
470 if (texUnit->LodBias == param[0])
471 return;
472 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
473 texUnit->LodBias = CLAMP(param[0], -ctx->Const.MaxTextureLodBias,
474 ctx->Const.MaxTextureLodBias);
475 }
476 else {
477 TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
478 return;
479 }
480 }
481 else if (target == GL_POINT_SPRITE_NV) {
482 /* GL_NV_point_sprite */
483 if (!ctx->Extensions.NV_point_sprite) {
484 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
485 return;
486 }
487 if (pname == GL_COORD_REPLACE_NV) {
488 const GLenum value = (GLenum) param[0];
489 if (value == GL_TRUE || value == GL_FALSE) {
490 /* It's kind of weird to set point state via glTexEnv,
491 * but that's what the spec calls for.
492 */
493 const GLboolean state = (GLboolean) value;
494 if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)
495 return;
496 FLUSH_VERTICES(ctx, _NEW_POINT);
497 ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;
498 }
499 else {
500 _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);
501 return;
502 }
503 }
504 else {
505 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
506 return;
507 }
508 }
509 else {
510 _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)",target );
511 return;
512 }
513
514 if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
515 _mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",
516 _mesa_lookup_enum_by_nr(target),
517 _mesa_lookup_enum_by_nr(pname),
518 *param,
519 _mesa_lookup_enum_by_nr((GLenum) (GLint) *param));
520
521 /* Tell device driver about the new texture environment */
522 if (ctx->Driver.TexEnv) {
523 (*ctx->Driver.TexEnv)( ctx, target, pname, param );
524 }
525 }
526
527
528 void
529 _mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )
530 {
531 _mesa_TexEnvfv( target, pname, &param );
532 }
533
534
535
536 void
537 _mesa_TexEnvi( GLenum target, GLenum pname, GLint param )
538 {
539 GLfloat p[4];
540 p[0] = (GLfloat) param;
541 p[1] = p[2] = p[3] = 0.0;
542 _mesa_TexEnvfv( target, pname, p );
543 }
544
545
546 void
547 _mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )
548 {
549 GLfloat p[4];
550 if (pname == GL_TEXTURE_ENV_COLOR) {
551 p[0] = INT_TO_FLOAT( param[0] );
552 p[1] = INT_TO_FLOAT( param[1] );
553 p[2] = INT_TO_FLOAT( param[2] );
554 p[3] = INT_TO_FLOAT( param[3] );
555 }
556 else {
557 p[0] = (GLint) param[0];
558 p[1] = p[2] = p[3] = 0; /* init to zero, just to be safe */
559 }
560 _mesa_TexEnvfv( target, pname, p );
561 }
562
563
564 void
565 _mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
566 {
567 GET_CURRENT_CONTEXT(ctx);
568 const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
569 ASSERT_OUTSIDE_BEGIN_END(ctx);
570
571 if (target == GL_TEXTURE_ENV) {
572 switch (pname) {
573 case GL_TEXTURE_ENV_MODE:
574 *params = ENUM_TO_FLOAT(texUnit->EnvMode);
575 break;
576 case GL_TEXTURE_ENV_COLOR:
577 COPY_4FV( params, texUnit->EnvColor );
578 break;
579 case GL_COMBINE_RGB_EXT:
580 if (ctx->Extensions.EXT_texture_env_combine ||
581 ctx->Extensions.ARB_texture_env_combine) {
582 *params = (GLfloat) texUnit->CombineModeRGB;
583 }
584 else {
585 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
586 }
587 break;
588 case GL_COMBINE_ALPHA_EXT:
589 if (ctx->Extensions.EXT_texture_env_combine ||
590 ctx->Extensions.ARB_texture_env_combine) {
591 *params = (GLfloat) texUnit->CombineModeA;
592 }
593 else {
594 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
595 }
596 break;
597 case GL_SOURCE0_RGB_EXT:
598 if (ctx->Extensions.EXT_texture_env_combine ||
599 ctx->Extensions.ARB_texture_env_combine) {
600 *params = (GLfloat) texUnit->CombineSourceRGB[0];
601 }
602 else {
603 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
604 }
605 break;
606 case GL_SOURCE1_RGB_EXT:
607 if (ctx->Extensions.EXT_texture_env_combine ||
608 ctx->Extensions.ARB_texture_env_combine) {
609 *params = (GLfloat) texUnit->CombineSourceRGB[1];
610 }
611 else {
612 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
613 }
614 break;
615 case GL_SOURCE2_RGB_EXT:
616 if (ctx->Extensions.EXT_texture_env_combine ||
617 ctx->Extensions.ARB_texture_env_combine) {
618 *params = (GLfloat) texUnit->CombineSourceRGB[2];
619 }
620 else {
621 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
622 }
623 break;
624 case GL_SOURCE0_ALPHA_EXT:
625 if (ctx->Extensions.EXT_texture_env_combine ||
626 ctx->Extensions.ARB_texture_env_combine) {
627 *params = (GLfloat) texUnit->CombineSourceA[0];
628 }
629 else {
630 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
631 }
632 break;
633 case GL_SOURCE1_ALPHA_EXT:
634 if (ctx->Extensions.EXT_texture_env_combine ||
635 ctx->Extensions.ARB_texture_env_combine) {
636 *params = (GLfloat) texUnit->CombineSourceA[1];
637 }
638 else {
639 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
640 }
641 break;
642 case GL_SOURCE2_ALPHA_EXT:
643 if (ctx->Extensions.EXT_texture_env_combine ||
644 ctx->Extensions.ARB_texture_env_combine) {
645 *params = (GLfloat) texUnit->CombineSourceA[2];
646 }
647 else {
648 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
649 }
650 break;
651 case GL_OPERAND0_RGB_EXT:
652 if (ctx->Extensions.EXT_texture_env_combine ||
653 ctx->Extensions.ARB_texture_env_combine) {
654 *params = (GLfloat) texUnit->CombineOperandRGB[0];
655 }
656 else {
657 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
658 }
659 break;
660 case GL_OPERAND1_RGB_EXT:
661 if (ctx->Extensions.EXT_texture_env_combine ||
662 ctx->Extensions.ARB_texture_env_combine) {
663 *params = (GLfloat) texUnit->CombineOperandRGB[1];
664 }
665 else {
666 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
667 }
668 break;
669 case GL_OPERAND2_RGB_EXT:
670 if (ctx->Extensions.EXT_texture_env_combine ||
671 ctx->Extensions.ARB_texture_env_combine) {
672 *params = (GLfloat) texUnit->CombineOperandRGB[2];
673 }
674 else {
675 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
676 }
677 break;
678 case GL_OPERAND0_ALPHA_EXT:
679 if (ctx->Extensions.EXT_texture_env_combine ||
680 ctx->Extensions.ARB_texture_env_combine) {
681 *params = (GLfloat) texUnit->CombineOperandA[0];
682 }
683 else {
684 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
685 }
686 break;
687 case GL_OPERAND1_ALPHA_EXT:
688 if (ctx->Extensions.EXT_texture_env_combine ||
689 ctx->Extensions.ARB_texture_env_combine) {
690 *params = (GLfloat) texUnit->CombineOperandA[1];
691 }
692 else {
693 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
694 }
695 break;
696 case GL_OPERAND2_ALPHA_EXT:
697 if (ctx->Extensions.EXT_texture_env_combine ||
698 ctx->Extensions.ARB_texture_env_combine) {
699 *params = (GLfloat) texUnit->CombineOperandA[2];
700 }
701 else {
702 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
703 }
704 break;
705 case GL_RGB_SCALE_EXT:
706 if (ctx->Extensions.EXT_texture_env_combine ||
707 ctx->Extensions.ARB_texture_env_combine) {
708 if (texUnit->CombineScaleShiftRGB == 0)
709 *params = 1.0;
710 else if (texUnit->CombineScaleShiftRGB == 1)
711 *params = 2.0;
712 else
713 *params = 4.0;
714 }
715 else {
716 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
717 return;
718 }
719 break;
720 case GL_ALPHA_SCALE:
721 if (ctx->Extensions.EXT_texture_env_combine ||
722 ctx->Extensions.ARB_texture_env_combine) {
723 if (texUnit->CombineScaleShiftA == 0)
724 *params = 1.0;
725 else if (texUnit->CombineScaleShiftA == 1)
726 *params = 2.0;
727 else
728 *params = 4.0;
729 }
730 else {
731 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
732 return;
733 }
734 break;
735 default:
736 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
737 }
738 }
739 else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
740 /* GL_EXT_texture_lod_bias */
741 if (!ctx->Extensions.EXT_texture_lod_bias) {
742 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
743 return;
744 }
745 if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
746 *params = texUnit->LodBias;
747 }
748 else {
749 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
750 return;
751 }
752 }
753 else if (target == GL_POINT_SPRITE_NV) {
754 /* GL_NV_point_sprite */
755 if (!ctx->Extensions.NV_point_sprite) {
756 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
757 return;
758 }
759 if (pname == GL_COORD_REPLACE_NV) {
760 *params = (GLfloat) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
761 }
762 else {
763 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
764 return;
765 }
766 }
767 else {
768 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
769 return;
770 }
771 }
772
773
774 void
775 _mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
776 {
777 GET_CURRENT_CONTEXT(ctx);
778 const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
779 ASSERT_OUTSIDE_BEGIN_END(ctx);
780
781 if (target == GL_TEXTURE_ENV) {
782 switch (pname) {
783 case GL_TEXTURE_ENV_MODE:
784 *params = (GLint) texUnit->EnvMode;
785 break;
786 case GL_TEXTURE_ENV_COLOR:
787 params[0] = FLOAT_TO_INT( texUnit->EnvColor[0] );
788 params[1] = FLOAT_TO_INT( texUnit->EnvColor[1] );
789 params[2] = FLOAT_TO_INT( texUnit->EnvColor[2] );
790 params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );
791 break;
792 case GL_COMBINE_RGB_EXT:
793 if (ctx->Extensions.EXT_texture_env_combine ||
794 ctx->Extensions.ARB_texture_env_combine) {
795 *params = (GLint) texUnit->CombineModeRGB;
796 }
797 else {
798 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
799 }
800 break;
801 case GL_COMBINE_ALPHA_EXT:
802 if (ctx->Extensions.EXT_texture_env_combine ||
803 ctx->Extensions.ARB_texture_env_combine) {
804 *params = (GLint) texUnit->CombineModeA;
805 }
806 else {
807 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
808 }
809 break;
810 case GL_SOURCE0_RGB_EXT:
811 if (ctx->Extensions.EXT_texture_env_combine ||
812 ctx->Extensions.ARB_texture_env_combine) {
813 *params = (GLint) texUnit->CombineSourceRGB[0];
814 }
815 else {
816 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
817 }
818 break;
819 case GL_SOURCE1_RGB_EXT:
820 if (ctx->Extensions.EXT_texture_env_combine ||
821 ctx->Extensions.ARB_texture_env_combine) {
822 *params = (GLint) texUnit->CombineSourceRGB[1];
823 }
824 else {
825 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
826 }
827 break;
828 case GL_SOURCE2_RGB_EXT:
829 if (ctx->Extensions.EXT_texture_env_combine ||
830 ctx->Extensions.ARB_texture_env_combine) {
831 *params = (GLint) texUnit->CombineSourceRGB[2];
832 }
833 else {
834 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
835 }
836 break;
837 case GL_SOURCE0_ALPHA_EXT:
838 if (ctx->Extensions.EXT_texture_env_combine ||
839 ctx->Extensions.ARB_texture_env_combine) {
840 *params = (GLint) texUnit->CombineSourceA[0];
841 }
842 else {
843 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
844 }
845 break;
846 case GL_SOURCE1_ALPHA_EXT:
847 if (ctx->Extensions.EXT_texture_env_combine ||
848 ctx->Extensions.ARB_texture_env_combine) {
849 *params = (GLint) texUnit->CombineSourceA[1];
850 }
851 else {
852 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
853 }
854 break;
855 case GL_SOURCE2_ALPHA_EXT:
856 if (ctx->Extensions.EXT_texture_env_combine ||
857 ctx->Extensions.ARB_texture_env_combine) {
858 *params = (GLint) texUnit->CombineSourceA[2];
859 }
860 else {
861 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
862 }
863 break;
864 case GL_OPERAND0_RGB_EXT:
865 if (ctx->Extensions.EXT_texture_env_combine ||
866 ctx->Extensions.ARB_texture_env_combine) {
867 *params = (GLint) texUnit->CombineOperandRGB[0];
868 }
869 else {
870 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
871 }
872 break;
873 case GL_OPERAND1_RGB_EXT:
874 if (ctx->Extensions.EXT_texture_env_combine ||
875 ctx->Extensions.ARB_texture_env_combine) {
876 *params = (GLint) texUnit->CombineOperandRGB[1];
877 }
878 else {
879 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
880 }
881 break;
882 case GL_OPERAND2_RGB_EXT:
883 if (ctx->Extensions.EXT_texture_env_combine ||
884 ctx->Extensions.ARB_texture_env_combine) {
885 *params = (GLint) texUnit->CombineOperandRGB[2];
886 }
887 else {
888 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
889 }
890 break;
891 case GL_OPERAND0_ALPHA_EXT:
892 if (ctx->Extensions.EXT_texture_env_combine ||
893 ctx->Extensions.ARB_texture_env_combine) {
894 *params = (GLint) texUnit->CombineOperandA[0];
895 }
896 else {
897 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
898 }
899 break;
900 case GL_OPERAND1_ALPHA_EXT:
901 if (ctx->Extensions.EXT_texture_env_combine ||
902 ctx->Extensions.ARB_texture_env_combine) {
903 *params = (GLint) texUnit->CombineOperandA[1];
904 }
905 else {
906 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
907 }
908 break;
909 case GL_OPERAND2_ALPHA_EXT:
910 if (ctx->Extensions.EXT_texture_env_combine ||
911 ctx->Extensions.ARB_texture_env_combine) {
912 *params = (GLint) texUnit->CombineOperandA[2];
913 }
914 else {
915 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
916 }
917 break;
918 case GL_RGB_SCALE_EXT:
919 if (ctx->Extensions.EXT_texture_env_combine ||
920 ctx->Extensions.ARB_texture_env_combine) {
921 if (texUnit->CombineScaleShiftRGB == 0)
922 *params = 1;
923 else if (texUnit->CombineScaleShiftRGB == 1)
924 *params = 2;
925 else
926 *params = 4;
927 }
928 else {
929 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
930 return;
931 }
932 break;
933 case GL_ALPHA_SCALE:
934 if (ctx->Extensions.EXT_texture_env_combine ||
935 ctx->Extensions.ARB_texture_env_combine) {
936 if (texUnit->CombineScaleShiftA == 0)
937 *params = 1;
938 else if (texUnit->CombineScaleShiftA == 1)
939 *params = 2;
940 else
941 *params = 4;
942 }
943 else {
944 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
945 return;
946 }
947 break;
948 default:
949 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
950 }
951 }
952 else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
953 /* GL_EXT_texture_lod_bias */
954 if (!ctx->Extensions.EXT_texture_lod_bias) {
955 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
956 return;
957 }
958 if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
959 *params = (GLint) texUnit->LodBias;
960 }
961 else {
962 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
963 return;
964 }
965 }
966 else if (target == GL_POINT_SPRITE_NV) {
967 /* GL_NV_point_sprite */
968 if (!ctx->Extensions.NV_point_sprite) {
969 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
970 return;
971 }
972 if (pname == GL_COORD_REPLACE_NV) {
973 *params = (GLint) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
974 }
975 else {
976 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
977 return;
978 }
979 }
980 else {
981 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
982 return;
983 }
984 }
985
986
987
988
989 /**********************************************************************/
990 /* Texture Parameters */
991 /**********************************************************************/
992
993
994 void
995 _mesa_TexParameterf( GLenum target, GLenum pname, GLfloat param )
996 {
997 _mesa_TexParameterfv(target, pname, &param);
998 }
999
1000
1001 void
1002 _mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
1003 {
1004 GET_CURRENT_CONTEXT(ctx);
1005 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1006 GLenum eparam = (GLenum) (GLint) params[0];
1007 struct gl_texture_object *texObj;
1008 ASSERT_OUTSIDE_BEGIN_END(ctx);
1009
1010 if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
1011 _mesa_debug(ctx, "texPARAM %s %s %d...\n",
1012 _mesa_lookup_enum_by_nr(target),
1013 _mesa_lookup_enum_by_nr(pname),
1014 eparam);
1015
1016
1017 switch (target) {
1018 case GL_TEXTURE_1D:
1019 texObj = texUnit->Current1D;
1020 break;
1021 case GL_TEXTURE_2D:
1022 texObj = texUnit->Current2D;
1023 break;
1024 case GL_TEXTURE_3D_EXT:
1025 texObj = texUnit->Current3D;
1026 break;
1027 case GL_TEXTURE_CUBE_MAP_ARB:
1028 if (!ctx->Extensions.ARB_texture_cube_map) {
1029 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
1030 return;
1031 }
1032 texObj = texUnit->CurrentCubeMap;
1033 break;
1034 case GL_TEXTURE_RECTANGLE_NV:
1035 if (!ctx->Extensions.NV_texture_rectangle) {
1036 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
1037 return;
1038 }
1039 texObj = texUnit->CurrentRect;
1040 break;
1041 default:
1042 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
1043 return;
1044 }
1045
1046 switch (pname) {
1047 case GL_TEXTURE_MIN_FILTER:
1048 /* A small optimization */
1049 if (texObj->MinFilter == eparam)
1050 return;
1051
1052 if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
1053 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1054 texObj->MinFilter = eparam;
1055 }
1056 else if ((eparam==GL_NEAREST_MIPMAP_NEAREST ||
1057 eparam==GL_LINEAR_MIPMAP_NEAREST ||
1058 eparam==GL_NEAREST_MIPMAP_LINEAR ||
1059 eparam==GL_LINEAR_MIPMAP_LINEAR) &&
1060 texObj->Target != GL_TEXTURE_RECTANGLE_NV) {
1061 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1062 texObj->MinFilter = eparam;
1063 }
1064 else {
1065 _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1066 return;
1067 }
1068 break;
1069 case GL_TEXTURE_MAG_FILTER:
1070 /* A small optimization */
1071 if (texObj->MagFilter == eparam)
1072 return;
1073
1074 if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
1075 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1076 texObj->MagFilter = eparam;
1077 }
1078 else {
1079 _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1080 return;
1081 }
1082 break;
1083 case GL_TEXTURE_WRAP_S:
1084 if (texObj->WrapS == eparam)
1085 return;
1086 if (eparam == GL_CLAMP || eparam == GL_CLAMP_TO_EDGE ||
1087 (eparam == GL_CLAMP_TO_BORDER_ARB &&
1088 ctx->Extensions.ARB_texture_border_clamp)) {
1089 /* any texture target */
1090 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1091 texObj->WrapS = eparam;
1092 }
1093 else if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
1094 (eparam == GL_REPEAT ||
1095 (eparam == GL_MIRRORED_REPEAT_ARB &&
1096 ctx->Extensions.ARB_texture_mirrored_repeat))) {
1097 /* non-rectangle texture */
1098 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1099 texObj->WrapS = eparam;
1100 }
1101 else {
1102 _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1103 return;
1104 }
1105 break;
1106 case GL_TEXTURE_WRAP_T:
1107 if (texObj->WrapT == eparam)
1108 return;
1109 if (eparam == GL_CLAMP || eparam == GL_CLAMP_TO_EDGE ||
1110 (eparam == GL_CLAMP_TO_BORDER_ARB &&
1111 ctx->Extensions.ARB_texture_border_clamp)) {
1112 /* any texture target */
1113 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1114 texObj->WrapT = eparam;
1115 }
1116 else if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
1117 (eparam == GL_REPEAT ||
1118 (eparam == GL_MIRRORED_REPEAT_ARB &&
1119 ctx->Extensions.ARB_texture_mirrored_repeat))) {
1120 /* non-rectangle texture */
1121 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1122 texObj->WrapT = eparam;
1123 }
1124 else {
1125 _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1126 return;
1127 }
1128 break;
1129 case GL_TEXTURE_WRAP_R_EXT:
1130 if (texObj->WrapR == eparam)
1131 return;
1132 if (eparam == GL_CLAMP || eparam == GL_CLAMP_TO_EDGE ||
1133 (eparam == GL_CLAMP_TO_BORDER_ARB &&
1134 ctx->Extensions.ARB_texture_border_clamp)) {
1135 /* any texture target */
1136 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1137 texObj->WrapR = eparam;
1138 }
1139 else if (texObj->Target != GL_TEXTURE_RECTANGLE_NV &&
1140 (eparam == GL_REPEAT ||
1141 (eparam == GL_MIRRORED_REPEAT_ARB &&
1142 ctx->Extensions.ARB_texture_mirrored_repeat))) {
1143 /* non-rectangle texture */
1144 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1145 texObj->WrapR = eparam;
1146 }
1147 else {
1148 _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1149 }
1150 break;
1151 #if 0 /* someday */
1152 case GL_TEXTUER_BORDER_VALUES_NV:
1153 /* don't clamp */
1154 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1155 COPY_4V(texObj->BorderValues, params);
1156 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[0], params[0]);
1157 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[1], params[1]);
1158 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[2], params[2]);
1159 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[3], params[3]);
1160 break;
1161 #endif
1162 case GL_TEXTURE_BORDER_COLOR:
1163 /* clamp */
1164 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1165 texObj->BorderValues[0] = CLAMP(params[0], 0.0F, 1.0F);
1166 texObj->BorderValues[1] = CLAMP(params[1], 0.0F, 1.0F);
1167 texObj->BorderValues[2] = CLAMP(params[2], 0.0F, 1.0F);
1168 texObj->BorderValues[3] = CLAMP(params[3], 0.0F, 1.0F);
1169 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[0], texObj->BorderValues[0]);
1170 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[1], texObj->BorderValues[1]);
1171 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[2], texObj->BorderValues[2]);
1172 UNCLAMPED_FLOAT_TO_CHAN(texObj->BorderColor[3], texObj->BorderValues[3]);
1173 break;
1174 case GL_TEXTURE_MIN_LOD:
1175 if (texObj->MinLod == params[0])
1176 return;
1177 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1178 texObj->MinLod = params[0];
1179 break;
1180 case GL_TEXTURE_MAX_LOD:
1181 if (texObj->MaxLod == params[0])
1182 return;
1183 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1184 texObj->MaxLod = params[0];
1185 break;
1186 case GL_TEXTURE_BASE_LEVEL:
1187 if (params[0] < 0.0) {
1188 _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1189 return;
1190 }
1191 if (target == GL_TEXTURE_RECTANGLE_NV && params[0] != 0.0) {
1192 _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1193 return;
1194 }
1195 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1196 texObj->BaseLevel = (GLint) params[0];
1197 break;
1198 case GL_TEXTURE_MAX_LEVEL:
1199 if (params[0] < 0.0) {
1200 _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1201 return;
1202 }
1203 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1204 texObj->MaxLevel = (GLint) params[0];
1205 break;
1206 case GL_TEXTURE_PRIORITY:
1207 /* (keithh@netcomuk.co.uk) */
1208 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1209 texObj->Priority = CLAMP( params[0], 0.0F, 1.0F );
1210 break;
1211 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1212 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
1213 if (params[0] < 1.0) {
1214 _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
1215 return;
1216 }
1217 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1218 texObj->MaxAnisotropy = params[0];
1219 }
1220 else {
1221 _mesa_error(ctx, GL_INVALID_ENUM,
1222 "glTexParameter(pname=GL_MAX_TEXTURE_ANISOTROPY_EXT)");
1223 return;
1224 }
1225 break;
1226 case GL_TEXTURE_COMPARE_SGIX:
1227 if (ctx->Extensions.SGIX_shadow) {
1228 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1229 texObj->CompareFlag = params[0] ? GL_TRUE : GL_FALSE;
1230 }
1231 else {
1232 _mesa_error(ctx, GL_INVALID_ENUM,
1233 "glTexParameter(pname=GL_TEXTURE_COMPARE_SGIX)");
1234 return;
1235 }
1236 break;
1237 case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
1238 if (ctx->Extensions.SGIX_shadow) {
1239 GLenum op = (GLenum) params[0];
1240 if (op == GL_TEXTURE_LEQUAL_R_SGIX ||
1241 op == GL_TEXTURE_GEQUAL_R_SGIX) {
1242 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1243 texObj->CompareOperator = op;
1244 }
1245 else {
1246 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param)");
1247 }
1248 }
1249 else {
1250 _mesa_error(ctx, GL_INVALID_ENUM,
1251 "glTexParameter(pname=GL_TEXTURE_COMPARE_OPERATOR_SGIX)");
1252 return;
1253 }
1254 break;
1255 case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
1256 if (ctx->Extensions.SGIX_shadow_ambient) {
1257 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1258 UNCLAMPED_FLOAT_TO_CHAN(texObj->ShadowAmbient, params[0]);
1259 }
1260 else {
1261 _mesa_error(ctx, GL_INVALID_ENUM,
1262 "glTexParameter(pname=GL_SHADOW_AMBIENT_SGIX)");
1263 return;
1264 }
1265 break;
1266 case GL_GENERATE_MIPMAP_SGIS:
1267 if (ctx->Extensions.SGIS_generate_mipmap) {
1268 texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
1269 }
1270 else {
1271 _mesa_error(ctx, GL_INVALID_ENUM,
1272 "glTexParameter(pname=GL_GENERATE_MIPMAP_SGIS)");
1273 return;
1274 }
1275 break;
1276 case GL_TEXTURE_COMPARE_MODE_ARB:
1277 if (ctx->Extensions.ARB_shadow) {
1278 const GLenum mode = (GLenum) params[0];
1279 if (mode == GL_NONE || mode == GL_COMPARE_R_TO_TEXTURE_ARB) {
1280 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1281 texObj->CompareMode = mode;
1282 }
1283 else {
1284 _mesa_error(ctx, GL_INVALID_ENUM,
1285 "glTexParameter(bad GL_TEXTURE_COMPARE_MODE_ARB)");
1286 return;
1287 }
1288 }
1289 else {
1290 _mesa_error(ctx, GL_INVALID_ENUM,
1291 "glTexParameter(pname=GL_TEXTURE_COMPARE_MODE_ARB)");
1292 return;
1293 }
1294 break;
1295 case GL_TEXTURE_COMPARE_FUNC_ARB:
1296 if (ctx->Extensions.ARB_shadow) {
1297 const GLenum func = (GLenum) params[0];
1298 if (func == GL_LEQUAL || func == GL_GEQUAL) {
1299 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1300 texObj->CompareFunc = func;
1301 }
1302 else if (ctx->Extensions.EXT_shadow_funcs &&
1303 (func == GL_EQUAL ||
1304 func == GL_NOTEQUAL ||
1305 func == GL_LESS ||
1306 func == GL_GREATER ||
1307 func == GL_ALWAYS ||
1308 func == GL_NEVER)) {
1309 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1310 texObj->CompareFunc = func;
1311 }
1312 else {
1313 _mesa_error(ctx, GL_INVALID_ENUM,
1314 "glTexParameter(bad GL_TEXTURE_COMPARE_FUNC_ARB)");
1315 return;
1316 }
1317 }
1318 else {
1319 _mesa_error(ctx, GL_INVALID_ENUM,
1320 "glTexParameter(pname=GL_TEXTURE_COMPARE_FUNC_ARB)");
1321 return;
1322 }
1323 break;
1324 case GL_DEPTH_TEXTURE_MODE_ARB:
1325 if (ctx->Extensions.ARB_depth_texture) {
1326 const GLenum result = (GLenum) params[0];
1327 if (result == GL_LUMINANCE || result == GL_INTENSITY
1328 || result == GL_ALPHA) {
1329 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1330 texObj->DepthMode = result;
1331 }
1332 else {
1333 _mesa_error(ctx, GL_INVALID_ENUM,
1334 "glTexParameter(bad GL_DEPTH_TEXTURE_MODE_ARB)");
1335 return;
1336 }
1337 }
1338 else {
1339 _mesa_error(ctx, GL_INVALID_ENUM,
1340 "glTexParameter(pname=GL_DEPTH_TEXTURE_MODE_ARB)");
1341 return;
1342 }
1343 break;
1344
1345 default:
1346 _mesa_error(ctx, GL_INVALID_ENUM,
1347 "glTexParameter(pname=0x%x)", pname);
1348 return;
1349 }
1350
1351 texObj->Complete = GL_FALSE;
1352
1353 if (ctx->Driver.TexParameter) {
1354 (*ctx->Driver.TexParameter)( ctx, target, texObj, pname, params );
1355 }
1356 }
1357
1358
1359 void
1360 _mesa_TexParameteri( GLenum target, GLenum pname, GLint param )
1361 {
1362 GLfloat fparam[4];
1363 fparam[0] = (GLfloat) param;
1364 fparam[1] = fparam[2] = fparam[3] = 0.0;
1365 _mesa_TexParameterfv(target, pname, fparam);
1366 }
1367
1368 void
1369 _mesa_TexParameteriv( GLenum target, GLenum pname, const GLint *params )
1370 {
1371 GLfloat fparam[4];
1372 fparam[0] = (GLfloat) params[0];
1373 fparam[1] = fparam[2] = fparam[3] = 0.0;
1374 _mesa_TexParameterfv(target, pname, fparam);
1375 }
1376
1377
1378 void
1379 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
1380 GLenum pname, GLfloat *params )
1381 {
1382 GLint iparam;
1383 _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
1384 *params = (GLfloat) iparam;
1385 }
1386
1387
1388 static GLuint
1389 tex_image_dimensions(GLcontext *ctx, GLenum target)
1390 {
1391 switch (target) {
1392 case GL_TEXTURE_1D:
1393 case GL_PROXY_TEXTURE_1D:
1394 return 1;
1395 case GL_TEXTURE_2D:
1396 case GL_PROXY_TEXTURE_2D:
1397 return 2;
1398 case GL_TEXTURE_3D:
1399 case GL_PROXY_TEXTURE_3D:
1400 return 3;
1401 case GL_TEXTURE_CUBE_MAP_ARB:
1402 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1403 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
1404 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
1405 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1406 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1407 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1408 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1409 return ctx->Extensions.ARB_texture_cube_map ? 2 : 0;
1410 case GL_TEXTURE_RECTANGLE_NV:
1411 case GL_PROXY_TEXTURE_RECTANGLE_NV:
1412 return ctx->Extensions.NV_texture_rectangle ? 2 : 0;
1413 default:
1414 _mesa_problem(ctx, "bad target in _mesa_tex_target_dimensions()");
1415 return 0;
1416 }
1417 }
1418
1419
1420 void
1421 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
1422 GLenum pname, GLint *params )
1423 {
1424 GET_CURRENT_CONTEXT(ctx);
1425 const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1426 const struct gl_texture_image *img = NULL;
1427 GLuint dimensions;
1428 GLboolean isProxy;
1429 GLint maxLevels;
1430 ASSERT_OUTSIDE_BEGIN_END(ctx);
1431
1432 /* this will catch bad target values */
1433 dimensions = tex_image_dimensions(ctx, target); /* 1, 2 or 3 */
1434 if (dimensions == 0) {
1435 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(target)");
1436 return;
1437 }
1438
1439 switch (target) {
1440 case GL_TEXTURE_1D:
1441 case GL_PROXY_TEXTURE_1D:
1442 case GL_TEXTURE_2D:
1443 case GL_PROXY_TEXTURE_2D:
1444 maxLevels = ctx->Const.MaxTextureLevels;
1445 break;
1446 case GL_TEXTURE_3D:
1447 case GL_PROXY_TEXTURE_3D:
1448 maxLevels = ctx->Const.Max3DTextureLevels;
1449 break;
1450 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
1451 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
1452 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
1453 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
1454 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
1455 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
1456 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1457 maxLevels = ctx->Const.MaxCubeTextureLevels;
1458 break;
1459 case GL_TEXTURE_RECTANGLE_NV:
1460 case GL_PROXY_TEXTURE_RECTANGLE_NV:
1461 maxLevels = 1;
1462 break;
1463 default:
1464 _mesa_printf(ctx, "bad target in _mesa_GetTexLevelParameter (0x%x)", target);
1465 return;
1466 }
1467
1468 if (level < 0 || level >= maxLevels) {
1469 _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
1470 return;
1471 }
1472
1473 img = _mesa_select_tex_image(ctx, texUnit, target, level);
1474 if (!img || !img->TexFormat) {
1475 /* undefined texture image */
1476 if (pname == GL_TEXTURE_COMPONENTS)
1477 *params = 1;
1478 else
1479 *params = 0;
1480 return;
1481 }
1482
1483 isProxy = (target == GL_PROXY_TEXTURE_1D) ||
1484 (target == GL_PROXY_TEXTURE_2D) ||
1485 (target == GL_PROXY_TEXTURE_3D) ||
1486 (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) ||
1487 (target == GL_PROXY_TEXTURE_RECTANGLE_NV);
1488
1489 switch (pname) {
1490 case GL_TEXTURE_WIDTH:
1491 *params = img->Width;
1492 return;
1493 case GL_TEXTURE_HEIGHT:
1494 *params = img->Height;
1495 return;
1496 case GL_TEXTURE_DEPTH:
1497 *params = img->Depth;
1498 return;
1499 case GL_TEXTURE_INTERNAL_FORMAT:
1500 *params = img->IntFormat;
1501 return;
1502 case GL_TEXTURE_BORDER:
1503 *params = img->Border;
1504 return;
1505 case GL_TEXTURE_RED_SIZE:
1506 if (img->Format == GL_RGB || img->Format == GL_RGBA)
1507 *params = img->TexFormat->RedBits;
1508 else
1509 *params = 0;
1510 return;
1511 case GL_TEXTURE_GREEN_SIZE:
1512 if (img->Format == GL_RGB || img->Format == GL_RGBA)
1513 *params = img->TexFormat->GreenBits;
1514 else
1515 *params = 0;
1516 return;
1517 case GL_TEXTURE_BLUE_SIZE:
1518 if (img->Format == GL_RGB || img->Format == GL_RGBA)
1519 *params = img->TexFormat->BlueBits;
1520 else
1521 *params = 0;
1522 return;
1523 case GL_TEXTURE_ALPHA_SIZE:
1524 if (img->Format == GL_ALPHA || img->Format == GL_LUMINANCE_ALPHA ||
1525 img->Format == GL_RGBA)
1526 *params = img->TexFormat->AlphaBits;
1527 else
1528 *params = 0;
1529 return;
1530 case GL_TEXTURE_INTENSITY_SIZE:
1531 if (img->Format != GL_INTENSITY)
1532 *params = 0;
1533 else if (img->TexFormat->IntensityBits > 0)
1534 *params = img->TexFormat->IntensityBits;
1535 else /* intensity probably stored as rgb texture */
1536 *params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits);
1537 return;
1538 case GL_TEXTURE_LUMINANCE_SIZE:
1539 if (img->Format != GL_LUMINANCE &&
1540 img->Format != GL_LUMINANCE_ALPHA)
1541 *params = 0;
1542 else if (img->TexFormat->LuminanceBits > 0)
1543 *params = img->TexFormat->LuminanceBits;
1544 else /* luminance probably stored as rgb texture */
1545 *params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits);
1546 return;
1547 case GL_TEXTURE_INDEX_SIZE_EXT:
1548 if (img->Format == GL_COLOR_INDEX)
1549 *params = img->TexFormat->IndexBits;
1550 else
1551 *params = 0;
1552 return;
1553 case GL_DEPTH_BITS:
1554 /* XXX this isn't in the GL_SGIX_depth_texture spec
1555 * but seems appropriate.
1556 */
1557 if (ctx->Extensions.SGIX_depth_texture)
1558 *params = img->TexFormat->DepthBits;
1559 else
1560 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(pname)");
1561 return;
1562
1563 /* GL_ARB_texture_compression */
1564 case GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB:
1565 if (ctx->Extensions.ARB_texture_compression) {
1566 if (img->IsCompressed && !isProxy)
1567 *params = img->CompressedSize;
1568 else
1569 _mesa_error(ctx, GL_INVALID_OPERATION,
1570 "glGetTexLevelParameter[if]v(pname)");
1571 }
1572 else {
1573 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(pname)");
1574 }
1575 return;
1576 case GL_TEXTURE_COMPRESSED_ARB:
1577 if (ctx->Extensions.ARB_texture_compression) {
1578 *params = (GLint) img->IsCompressed;
1579 }
1580 else {
1581 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(pname)");
1582 }
1583 return;
1584
1585 default:
1586 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(pname)");
1587 }
1588 }
1589
1590
1591
1592 void
1593 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1594 {
1595 GET_CURRENT_CONTEXT(ctx);
1596 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1597 struct gl_texture_object *obj;
1598 ASSERT_OUTSIDE_BEGIN_END(ctx);
1599
1600 obj = _mesa_select_tex_object(ctx, texUnit, target);
1601 if (!obj) {
1602 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(target)");
1603 return;
1604 }
1605
1606 switch (pname) {
1607 case GL_TEXTURE_MAG_FILTER:
1608 *params = ENUM_TO_FLOAT(obj->MagFilter);
1609 return;
1610 case GL_TEXTURE_MIN_FILTER:
1611 *params = ENUM_TO_FLOAT(obj->MinFilter);
1612 return;
1613 case GL_TEXTURE_WRAP_S:
1614 *params = ENUM_TO_FLOAT(obj->WrapS);
1615 return;
1616 case GL_TEXTURE_WRAP_T:
1617 *params = ENUM_TO_FLOAT(obj->WrapT);
1618 return;
1619 case GL_TEXTURE_WRAP_R_EXT:
1620 *params = ENUM_TO_FLOAT(obj->WrapR);
1621 return;
1622 #if 0 /* someday */
1623 case GL_TEXTURE_BORDER_VALUES_NV:
1624 /* unclamped */
1625 params[0] = obj->BorderValues[0];
1626 params[1] = obj->BorderValues[1];
1627 params[2] = obj->BorderValues[2];
1628 params[3] = obj->BorderValues[3];
1629 return;
1630 #endif
1631 case GL_TEXTURE_BORDER_COLOR:
1632 /* clamped */
1633 params[0] = obj->BorderColor[0] / CHAN_MAXF;
1634 params[1] = obj->BorderColor[1] / CHAN_MAXF;
1635 params[2] = obj->BorderColor[2] / CHAN_MAXF;
1636 params[3] = obj->BorderColor[3] / CHAN_MAXF;
1637 return;
1638 case GL_TEXTURE_RESIDENT:
1639 {
1640 GLboolean resident;
1641 if (ctx->Driver.IsTextureResident)
1642 resident = ctx->Driver.IsTextureResident(ctx, obj);
1643 else
1644 resident = GL_TRUE;
1645 *params = ENUM_TO_FLOAT(resident);
1646 }
1647 return;
1648 case GL_TEXTURE_PRIORITY:
1649 *params = obj->Priority;
1650 return;
1651 case GL_TEXTURE_MIN_LOD:
1652 *params = obj->MinLod;
1653 return;
1654 case GL_TEXTURE_MAX_LOD:
1655 *params = obj->MaxLod;
1656 return;
1657 case GL_TEXTURE_BASE_LEVEL:
1658 *params = (GLfloat) obj->BaseLevel;
1659 return;
1660 case GL_TEXTURE_MAX_LEVEL:
1661 *params = (GLfloat) obj->MaxLevel;
1662 return;
1663 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1664 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
1665 *params = obj->MaxAnisotropy;
1666 return;
1667 }
1668 break;
1669 case GL_TEXTURE_COMPARE_SGIX:
1670 if (ctx->Extensions.SGIX_shadow) {
1671 *params = (GLfloat) obj->CompareFlag;
1672 return;
1673 }
1674 break;
1675 case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
1676 if (ctx->Extensions.SGIX_shadow) {
1677 *params = (GLfloat) obj->CompareOperator;
1678 return;
1679 }
1680 break;
1681 case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
1682 if (ctx->Extensions.SGIX_shadow_ambient) {
1683 *params = CHAN_TO_FLOAT(obj->ShadowAmbient);
1684 return;
1685 }
1686 break;
1687 case GL_GENERATE_MIPMAP_SGIS:
1688 if (ctx->Extensions.SGIS_generate_mipmap) {
1689 *params = (GLfloat) obj->GenerateMipmap;
1690 return;
1691 }
1692 break;
1693 case GL_TEXTURE_COMPARE_MODE_ARB:
1694 if (ctx->Extensions.ARB_shadow) {
1695 *params = (GLfloat) obj->CompareMode;
1696 return;
1697 }
1698 break;
1699 case GL_TEXTURE_COMPARE_FUNC_ARB:
1700 if (ctx->Extensions.ARB_shadow) {
1701 *params = (GLfloat) obj->CompareFunc;
1702 return;
1703 }
1704 break;
1705 case GL_DEPTH_TEXTURE_MODE_ARB:
1706 if (ctx->Extensions.ARB_depth_texture) {
1707 *params = (GLfloat) obj->DepthMode;
1708 return;
1709 }
1710 break;
1711 default:
1712 ; /* silence warnings */
1713 }
1714 /* If we get here, pname was an unrecognized enum */
1715 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname)" );
1716 }
1717
1718
1719 void
1720 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1721 {
1722 GET_CURRENT_CONTEXT(ctx);
1723 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1724 struct gl_texture_object *obj;
1725 ASSERT_OUTSIDE_BEGIN_END(ctx);
1726
1727 obj = _mesa_select_tex_object(ctx, texUnit, target);
1728 if (!obj) {
1729 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(target)");
1730 return;
1731 }
1732
1733 switch (pname) {
1734 case GL_TEXTURE_MAG_FILTER:
1735 *params = (GLint) obj->MagFilter;
1736 return;
1737 case GL_TEXTURE_MIN_FILTER:
1738 *params = (GLint) obj->MinFilter;
1739 return;
1740 case GL_TEXTURE_WRAP_S:
1741 *params = (GLint) obj->WrapS;
1742 return;
1743 case GL_TEXTURE_WRAP_T:
1744 *params = (GLint) obj->WrapT;
1745 return;
1746 case GL_TEXTURE_WRAP_R_EXT:
1747 *params = (GLint) obj->WrapR;
1748 return;
1749 #if 0 /* someday */
1750 case GL_TEXTURE_BORDER_VALUES_NV:
1751 /* unclamped */
1752 params[0] = FLOAT_TO_INT(obj->BorderValues[0]);
1753 params[1] = FLOAT_TO_INT(obj->BorderValues[1]);
1754 params[2] = FLOAT_TO_INT(obj->BorderValues[2]);
1755 params[3] = FLOAT_TO_INT(obj->BorderValues[3]);
1756 return;
1757 #endif
1758 case GL_TEXTURE_BORDER_COLOR:
1759 /* clamped */
1760 {
1761 GLfloat b[4];
1762 b[0] = CLAMP(obj->BorderValues[0], 0.0F, 1.0F);
1763 b[1] = CLAMP(obj->BorderValues[1], 0.0F, 1.0F);
1764 b[2] = CLAMP(obj->BorderValues[2], 0.0F, 1.0F);
1765 b[3] = CLAMP(obj->BorderValues[3], 0.0F, 1.0F);
1766 params[0] = FLOAT_TO_INT(b[0]);
1767 params[1] = FLOAT_TO_INT(b[1]);
1768 params[2] = FLOAT_TO_INT(b[2]);
1769 params[3] = FLOAT_TO_INT(b[3]);
1770 }
1771 return;
1772 case GL_TEXTURE_RESIDENT:
1773 {
1774 GLboolean resident;
1775 if (ctx->Driver.IsTextureResident)
1776 resident = ctx->Driver.IsTextureResident(ctx, obj);
1777 else
1778 resident = GL_TRUE;
1779 *params = (GLint) resident;
1780 }
1781 return;
1782 case GL_TEXTURE_PRIORITY:
1783 *params = (GLint) obj->Priority;
1784 return;
1785 case GL_TEXTURE_MIN_LOD:
1786 *params = (GLint) obj->MinLod;
1787 return;
1788 case GL_TEXTURE_MAX_LOD:
1789 *params = (GLint) obj->MaxLod;
1790 return;
1791 case GL_TEXTURE_BASE_LEVEL:
1792 *params = obj->BaseLevel;
1793 return;
1794 case GL_TEXTURE_MAX_LEVEL:
1795 *params = obj->MaxLevel;
1796 return;
1797 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1798 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
1799 *params = (GLint) obj->MaxAnisotropy;
1800 return;
1801 }
1802 break;
1803 case GL_TEXTURE_COMPARE_SGIX:
1804 if (ctx->Extensions.SGIX_shadow) {
1805 *params = (GLint) obj->CompareFlag;
1806 return;
1807 }
1808 break;
1809 case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
1810 if (ctx->Extensions.SGIX_shadow) {
1811 *params = (GLint) obj->CompareOperator;
1812 return;
1813 }
1814 break;
1815 case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
1816 if (ctx->Extensions.SGIX_shadow_ambient) {
1817 GLfloat a = CHAN_TO_FLOAT(obj->ShadowAmbient);
1818 *params = (GLint) FLOAT_TO_INT(a);
1819 return;
1820 }
1821 break;
1822 case GL_GENERATE_MIPMAP_SGIS:
1823 if (ctx->Extensions.SGIS_generate_mipmap) {
1824 *params = (GLint) obj->GenerateMipmap;
1825 return;
1826 }
1827 break;
1828 case GL_TEXTURE_COMPARE_MODE_ARB:
1829 if (ctx->Extensions.ARB_shadow) {
1830 *params = (GLint) obj->CompareMode;
1831 return;
1832 }
1833 break;
1834 case GL_TEXTURE_COMPARE_FUNC_ARB:
1835 if (ctx->Extensions.ARB_shadow) {
1836 *params = (GLint) obj->CompareFunc;
1837 return;
1838 }
1839 break;
1840 case GL_DEPTH_TEXTURE_MODE_ARB:
1841 if (ctx->Extensions.ARB_depth_texture) {
1842 *params = (GLint) obj->DepthMode;
1843 return;
1844 }
1845 break;
1846 default:
1847 ; /* silence warnings */
1848 }
1849 /* If we get here, pname was an unrecognized enum */
1850 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname)" );
1851 }
1852
1853
1854
1855
1856 /**********************************************************************/
1857 /* Texture Coord Generation */
1858 /**********************************************************************/
1859
1860
1861 void
1862 _mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
1863 {
1864 GET_CURRENT_CONTEXT(ctx);
1865 GLuint tUnit = ctx->Texture.CurrentUnit;
1866 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
1867 ASSERT_OUTSIDE_BEGIN_END(ctx);
1868
1869 if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
1870 _mesa_debug(ctx, "texGEN %s %s %x...\n",
1871 _mesa_lookup_enum_by_nr(coord),
1872 _mesa_lookup_enum_by_nr(pname),
1873 *(int *)params);
1874
1875 switch (coord) {
1876 case GL_S:
1877 if (pname==GL_TEXTURE_GEN_MODE) {
1878 GLenum mode = (GLenum) (GLint) *params;
1879 GLuint bits;
1880 switch (mode) {
1881 case GL_OBJECT_LINEAR:
1882 bits = TEXGEN_OBJ_LINEAR;
1883 break;
1884 case GL_EYE_LINEAR:
1885 bits = TEXGEN_EYE_LINEAR;
1886 break;
1887 case GL_REFLECTION_MAP_NV:
1888 bits = TEXGEN_REFLECTION_MAP_NV;
1889 break;
1890 case GL_NORMAL_MAP_NV:
1891 bits = TEXGEN_NORMAL_MAP_NV;
1892 break;
1893 case GL_SPHERE_MAP:
1894 bits = TEXGEN_SPHERE_MAP;
1895 break;
1896 default:
1897 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
1898 return;
1899 }
1900 if (texUnit->GenModeS == mode)
1901 return;
1902 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1903 texUnit->GenModeS = mode;
1904 texUnit->_GenBitS = bits;
1905 }
1906 else if (pname==GL_OBJECT_PLANE) {
1907 if (TEST_EQ_4V(texUnit->ObjectPlaneS, params))
1908 return;
1909 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1910 texUnit->ObjectPlaneS[0] = params[0];
1911 texUnit->ObjectPlaneS[1] = params[1];
1912 texUnit->ObjectPlaneS[2] = params[2];
1913 texUnit->ObjectPlaneS[3] = params[3];
1914 }
1915 else if (pname==GL_EYE_PLANE) {
1916 GLfloat tmp[4];
1917
1918 /* Transform plane equation by the inverse modelview matrix */
1919 if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
1920 _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1921 }
1922 _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
1923 if (TEST_EQ_4V(texUnit->EyePlaneS, tmp))
1924 return;
1925 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1926 COPY_4FV(texUnit->EyePlaneS, tmp);
1927 }
1928 else {
1929 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
1930 return;
1931 }
1932 break;
1933 case GL_T:
1934 if (pname==GL_TEXTURE_GEN_MODE) {
1935 GLenum mode = (GLenum) (GLint) *params;
1936 GLuint bitt;
1937 switch (mode) {
1938 case GL_OBJECT_LINEAR:
1939 bitt = TEXGEN_OBJ_LINEAR;
1940 break;
1941 case GL_EYE_LINEAR:
1942 bitt = TEXGEN_EYE_LINEAR;
1943 break;
1944 case GL_REFLECTION_MAP_NV:
1945 bitt = TEXGEN_REFLECTION_MAP_NV;
1946 break;
1947 case GL_NORMAL_MAP_NV:
1948 bitt = TEXGEN_NORMAL_MAP_NV;
1949 break;
1950 case GL_SPHERE_MAP:
1951 bitt = TEXGEN_SPHERE_MAP;
1952 break;
1953 default:
1954 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
1955 return;
1956 }
1957 if (texUnit->GenModeT == mode)
1958 return;
1959 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1960 texUnit->GenModeT = mode;
1961 texUnit->_GenBitT = bitt;
1962 }
1963 else if (pname==GL_OBJECT_PLANE) {
1964 if (TEST_EQ_4V(texUnit->ObjectPlaneT, params))
1965 return;
1966 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1967 texUnit->ObjectPlaneT[0] = params[0];
1968 texUnit->ObjectPlaneT[1] = params[1];
1969 texUnit->ObjectPlaneT[2] = params[2];
1970 texUnit->ObjectPlaneT[3] = params[3];
1971 }
1972 else if (pname==GL_EYE_PLANE) {
1973 GLfloat tmp[4];
1974 /* Transform plane equation by the inverse modelview matrix */
1975 if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
1976 _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1977 }
1978 _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
1979 if (TEST_EQ_4V(texUnit->EyePlaneT, tmp))
1980 return;
1981 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
1982 COPY_4FV(texUnit->EyePlaneT, tmp);
1983 }
1984 else {
1985 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
1986 return;
1987 }
1988 break;
1989 case GL_R:
1990 if (pname==GL_TEXTURE_GEN_MODE) {
1991 GLenum mode = (GLenum) (GLint) *params;
1992 GLuint bitr;
1993 switch (mode) {
1994 case GL_OBJECT_LINEAR:
1995 bitr = TEXGEN_OBJ_LINEAR;
1996 break;
1997 case GL_REFLECTION_MAP_NV:
1998 bitr = TEXGEN_REFLECTION_MAP_NV;
1999 break;
2000 case GL_NORMAL_MAP_NV:
2001 bitr = TEXGEN_NORMAL_MAP_NV;
2002 break;
2003 case GL_EYE_LINEAR:
2004 bitr = TEXGEN_EYE_LINEAR;
2005 break;
2006 default:
2007 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
2008 return;
2009 }
2010 if (texUnit->GenModeR == mode)
2011 return;
2012 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2013 texUnit->GenModeR = mode;
2014 texUnit->_GenBitR = bitr;
2015 }
2016 else if (pname==GL_OBJECT_PLANE) {
2017 if (TEST_EQ_4V(texUnit->ObjectPlaneR, params))
2018 return;
2019 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2020 texUnit->ObjectPlaneR[0] = params[0];
2021 texUnit->ObjectPlaneR[1] = params[1];
2022 texUnit->ObjectPlaneR[2] = params[2];
2023 texUnit->ObjectPlaneR[3] = params[3];
2024 }
2025 else if (pname==GL_EYE_PLANE) {
2026 GLfloat tmp[4];
2027 /* Transform plane equation by the inverse modelview matrix */
2028 if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
2029 _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
2030 }
2031 _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
2032 if (TEST_EQ_4V(texUnit->EyePlaneR, tmp))
2033 return;
2034 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2035 COPY_4FV(texUnit->EyePlaneR, tmp);
2036 }
2037 else {
2038 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
2039 return;
2040 }
2041 break;
2042 case GL_Q:
2043 if (pname==GL_TEXTURE_GEN_MODE) {
2044 GLenum mode = (GLenum) (GLint) *params;
2045 GLuint bitq;
2046 switch (mode) {
2047 case GL_OBJECT_LINEAR:
2048 bitq = TEXGEN_OBJ_LINEAR;
2049 break;
2050 case GL_EYE_LINEAR:
2051 bitq = TEXGEN_EYE_LINEAR;
2052 break;
2053 default:
2054 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
2055 return;
2056 }
2057 if (texUnit->GenModeQ == mode)
2058 return;
2059 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2060 texUnit->GenModeQ = mode;
2061 texUnit->_GenBitQ = bitq;
2062 }
2063 else if (pname==GL_OBJECT_PLANE) {
2064 if (TEST_EQ_4V(texUnit->ObjectPlaneQ, params))
2065 return;
2066 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2067 texUnit->ObjectPlaneQ[0] = params[0];
2068 texUnit->ObjectPlaneQ[1] = params[1];
2069 texUnit->ObjectPlaneQ[2] = params[2];
2070 texUnit->ObjectPlaneQ[3] = params[3];
2071 }
2072 else if (pname==GL_EYE_PLANE) {
2073 GLfloat tmp[4];
2074 /* Transform plane equation by the inverse modelview matrix */
2075 if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
2076 _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
2077 }
2078 _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
2079 if (TEST_EQ_4V(texUnit->EyePlaneQ, tmp))
2080 return;
2081 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2082 COPY_4FV(texUnit->EyePlaneQ, tmp);
2083 }
2084 else {
2085 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
2086 return;
2087 }
2088 break;
2089 default:
2090 _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(coord)" );
2091 return;
2092 }
2093
2094 if (ctx->Driver.TexGen)
2095 ctx->Driver.TexGen( ctx, coord, pname, params );
2096 }
2097
2098
2099 void
2100 _mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params )
2101 {
2102 GLfloat p[4];
2103 p[0] = (GLfloat) params[0];
2104 p[1] = (GLfloat) params[1];
2105 p[2] = (GLfloat) params[2];
2106 p[3] = (GLfloat) params[3];
2107 _mesa_TexGenfv(coord, pname, p);
2108 }
2109
2110
2111 void
2112 _mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
2113 {
2114 GLfloat p = (GLfloat) param;
2115 _mesa_TexGenfv( coord, pname, &p );
2116 }
2117
2118
2119 void
2120 _mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params )
2121 {
2122 GLfloat p[4];
2123 p[0] = (GLfloat) params[0];
2124 p[1] = (GLfloat) params[1];
2125 p[2] = (GLfloat) params[2];
2126 p[3] = (GLfloat) params[3];
2127 _mesa_TexGenfv( coord, pname, p );
2128 }
2129
2130
2131 void
2132 _mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param )
2133 {
2134 _mesa_TexGenfv(coord, pname, &param);
2135 }
2136
2137
2138 void
2139 _mesa_TexGeni( GLenum coord, GLenum pname, GLint param )
2140 {
2141 _mesa_TexGeniv( coord, pname, &param );
2142 }
2143
2144
2145
2146 void
2147 _mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
2148 {
2149 GET_CURRENT_CONTEXT(ctx);
2150 GLuint tUnit = ctx->Texture.CurrentUnit;
2151 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
2152 ASSERT_OUTSIDE_BEGIN_END(ctx);
2153
2154 switch (coord) {
2155 case GL_S:
2156 if (pname==GL_TEXTURE_GEN_MODE) {
2157 params[0] = ENUM_TO_DOUBLE(texUnit->GenModeS);
2158 }
2159 else if (pname==GL_OBJECT_PLANE) {
2160 COPY_4V( params, texUnit->ObjectPlaneS );
2161 }
2162 else if (pname==GL_EYE_PLANE) {
2163 COPY_4V( params, texUnit->EyePlaneS );
2164 }
2165 else {
2166 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
2167 return;
2168 }
2169 break;
2170 case GL_T:
2171 if (pname==GL_TEXTURE_GEN_MODE) {
2172 params[0] = ENUM_TO_DOUBLE(texUnit->GenModeT);
2173 }
2174 else if (pname==GL_OBJECT_PLANE) {
2175 COPY_4V( params, texUnit->ObjectPlaneT );
2176 }
2177 else if (pname==GL_EYE_PLANE) {
2178 COPY_4V( params, texUnit->EyePlaneT );
2179 }
2180 else {
2181 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
2182 return;
2183 }
2184 break;
2185 case GL_R:
2186 if (pname==GL_TEXTURE_GEN_MODE) {
2187 params[0] = ENUM_TO_DOUBLE(texUnit->GenModeR);
2188 }
2189 else if (pname==GL_OBJECT_PLANE) {
2190 COPY_4V( params, texUnit->ObjectPlaneR );
2191 }
2192 else if (pname==GL_EYE_PLANE) {
2193 COPY_4V( params, texUnit->EyePlaneR );
2194 }
2195 else {
2196 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
2197 return;
2198 }
2199 break;
2200 case GL_Q:
2201 if (pname==GL_TEXTURE_GEN_MODE) {
2202 params[0] = ENUM_TO_DOUBLE(texUnit->GenModeQ);
2203 }
2204 else if (pname==GL_OBJECT_PLANE) {
2205 COPY_4V( params, texUnit->ObjectPlaneQ );
2206 }
2207 else if (pname==GL_EYE_PLANE) {
2208 COPY_4V( params, texUnit->EyePlaneQ );
2209 }
2210 else {
2211 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
2212 return;
2213 }
2214 break;
2215 default:
2216 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)" );
2217 return;
2218 }
2219 }
2220
2221
2222
2223 void
2224 _mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
2225 {
2226 GET_CURRENT_CONTEXT(ctx);
2227 GLuint tUnit = ctx->Texture.CurrentUnit;
2228 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
2229 ASSERT_OUTSIDE_BEGIN_END(ctx);
2230
2231 switch (coord) {
2232 case GL_S:
2233 if (pname==GL_TEXTURE_GEN_MODE) {
2234 params[0] = ENUM_TO_FLOAT(texUnit->GenModeS);
2235 }
2236 else if (pname==GL_OBJECT_PLANE) {
2237 COPY_4V( params, texUnit->ObjectPlaneS );
2238 }
2239 else if (pname==GL_EYE_PLANE) {
2240 COPY_4V( params, texUnit->EyePlaneS );
2241 }
2242 else {
2243 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
2244 return;
2245 }
2246 break;
2247 case GL_T:
2248 if (pname==GL_TEXTURE_GEN_MODE) {
2249 params[0] = ENUM_TO_FLOAT(texUnit->GenModeT);
2250 }
2251 else if (pname==GL_OBJECT_PLANE) {
2252 COPY_4V( params, texUnit->ObjectPlaneT );
2253 }
2254 else if (pname==GL_EYE_PLANE) {
2255 COPY_4V( params, texUnit->EyePlaneT );
2256 }
2257 else {
2258 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
2259 return;
2260 }
2261 break;
2262 case GL_R:
2263 if (pname==GL_TEXTURE_GEN_MODE) {
2264 params[0] = ENUM_TO_FLOAT(texUnit->GenModeR);
2265 }
2266 else if (pname==GL_OBJECT_PLANE) {
2267 COPY_4V( params, texUnit->ObjectPlaneR );
2268 }
2269 else if (pname==GL_EYE_PLANE) {
2270 COPY_4V( params, texUnit->EyePlaneR );
2271 }
2272 else {
2273 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
2274 return;
2275 }
2276 break;
2277 case GL_Q:
2278 if (pname==GL_TEXTURE_GEN_MODE) {
2279 params[0] = ENUM_TO_FLOAT(texUnit->GenModeQ);
2280 }
2281 else if (pname==GL_OBJECT_PLANE) {
2282 COPY_4V( params, texUnit->ObjectPlaneQ );
2283 }
2284 else if (pname==GL_EYE_PLANE) {
2285 COPY_4V( params, texUnit->EyePlaneQ );
2286 }
2287 else {
2288 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
2289 return;
2290 }
2291 break;
2292 default:
2293 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)" );
2294 return;
2295 }
2296 }
2297
2298
2299
2300 void
2301 _mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
2302 {
2303 GET_CURRENT_CONTEXT(ctx);
2304 GLuint tUnit = ctx->Texture.CurrentUnit;
2305 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
2306 ASSERT_OUTSIDE_BEGIN_END(ctx);
2307
2308 switch (coord) {
2309 case GL_S:
2310 if (pname==GL_TEXTURE_GEN_MODE) {
2311 params[0] = texUnit->GenModeS;
2312 }
2313 else if (pname==GL_OBJECT_PLANE) {
2314 params[0] = (GLint) texUnit->ObjectPlaneS[0];
2315 params[1] = (GLint) texUnit->ObjectPlaneS[1];
2316 params[2] = (GLint) texUnit->ObjectPlaneS[2];
2317 params[3] = (GLint) texUnit->ObjectPlaneS[3];
2318 }
2319 else if (pname==GL_EYE_PLANE) {
2320 params[0] = (GLint) texUnit->EyePlaneS[0];
2321 params[1] = (GLint) texUnit->EyePlaneS[1];
2322 params[2] = (GLint) texUnit->EyePlaneS[2];
2323 params[3] = (GLint) texUnit->EyePlaneS[3];
2324 }
2325 else {
2326 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
2327 return;
2328 }
2329 break;
2330 case GL_T:
2331 if (pname==GL_TEXTURE_GEN_MODE) {
2332 params[0] = texUnit->GenModeT;
2333 }
2334 else if (pname==GL_OBJECT_PLANE) {
2335 params[0] = (GLint) texUnit->ObjectPlaneT[0];
2336 params[1] = (GLint) texUnit->ObjectPlaneT[1];
2337 params[2] = (GLint) texUnit->ObjectPlaneT[2];
2338 params[3] = (GLint) texUnit->ObjectPlaneT[3];
2339 }
2340 else if (pname==GL_EYE_PLANE) {
2341 params[0] = (GLint) texUnit->EyePlaneT[0];
2342 params[1] = (GLint) texUnit->EyePlaneT[1];
2343 params[2] = (GLint) texUnit->EyePlaneT[2];
2344 params[3] = (GLint) texUnit->EyePlaneT[3];
2345 }
2346 else {
2347 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
2348 return;
2349 }
2350 break;
2351 case GL_R:
2352 if (pname==GL_TEXTURE_GEN_MODE) {
2353 params[0] = texUnit->GenModeR;
2354 }
2355 else if (pname==GL_OBJECT_PLANE) {
2356 params[0] = (GLint) texUnit->ObjectPlaneR[0];
2357 params[1] = (GLint) texUnit->ObjectPlaneR[1];
2358 params[2] = (GLint) texUnit->ObjectPlaneR[2];
2359 params[3] = (GLint) texUnit->ObjectPlaneR[3];
2360 }
2361 else if (pname==GL_EYE_PLANE) {
2362 params[0] = (GLint) texUnit->EyePlaneR[0];
2363 params[1] = (GLint) texUnit->EyePlaneR[1];
2364 params[2] = (GLint) texUnit->EyePlaneR[2];
2365 params[3] = (GLint) texUnit->EyePlaneR[3];
2366 }
2367 else {
2368 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
2369 return;
2370 }
2371 break;
2372 case GL_Q:
2373 if (pname==GL_TEXTURE_GEN_MODE) {
2374 params[0] = texUnit->GenModeQ;
2375 }
2376 else if (pname==GL_OBJECT_PLANE) {
2377 params[0] = (GLint) texUnit->ObjectPlaneQ[0];
2378 params[1] = (GLint) texUnit->ObjectPlaneQ[1];
2379 params[2] = (GLint) texUnit->ObjectPlaneQ[2];
2380 params[3] = (GLint) texUnit->ObjectPlaneQ[3];
2381 }
2382 else if (pname==GL_EYE_PLANE) {
2383 params[0] = (GLint) texUnit->EyePlaneQ[0];
2384 params[1] = (GLint) texUnit->EyePlaneQ[1];
2385 params[2] = (GLint) texUnit->EyePlaneQ[2];
2386 params[3] = (GLint) texUnit->EyePlaneQ[3];
2387 }
2388 else {
2389 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
2390 return;
2391 }
2392 break;
2393 default:
2394 _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)" );
2395 return;
2396 }
2397 }
2398
2399
2400 /* GL_ARB_multitexture */
2401 void
2402 _mesa_ActiveTextureARB( GLenum target )
2403 {
2404 GET_CURRENT_CONTEXT(ctx);
2405 GLuint texUnit = target - GL_TEXTURE0_ARB;
2406 ASSERT_OUTSIDE_BEGIN_END(ctx);
2407
2408 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
2409 _mesa_debug(ctx, "glActiveTexture %s\n",
2410 _mesa_lookup_enum_by_nr(target));
2411
2412 if (texUnit > ctx->Const.MaxTextureUnits) {
2413 _mesa_error(ctx, GL_INVALID_ENUM, "glActiveTextureARB(target)");
2414 return;
2415 }
2416
2417 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
2418 ctx->Texture.CurrentUnit = texUnit;
2419 if (ctx->Driver.ActiveTexture) {
2420 (*ctx->Driver.ActiveTexture)( ctx, (GLuint) texUnit );
2421 }
2422 }
2423
2424
2425 /* GL_ARB_multitexture */
2426 void
2427 _mesa_ClientActiveTextureARB( GLenum target )
2428 {
2429 GET_CURRENT_CONTEXT(ctx);
2430 GLuint texUnit = target - GL_TEXTURE0_ARB;
2431 ASSERT_OUTSIDE_BEGIN_END(ctx);
2432
2433 if (texUnit > ctx->Const.MaxTextureUnits) {
2434 _mesa_error(ctx, GL_INVALID_ENUM, "glClientActiveTextureARB(target)");
2435 return;
2436 }
2437
2438 FLUSH_VERTICES(ctx, _NEW_ARRAY);
2439 ctx->Array.ActiveTexture = texUnit;
2440 }
2441
2442
2443
2444 /**********************************************************************/
2445 /* Pixel Texgen Extensions */
2446 /**********************************************************************/
2447
2448 void
2449 _mesa_PixelTexGenSGIX(GLenum mode)
2450 {
2451 GLenum newRgbSource, newAlphaSource;
2452 GET_CURRENT_CONTEXT(ctx);
2453 ASSERT_OUTSIDE_BEGIN_END(ctx);
2454
2455 switch (mode) {
2456 case GL_NONE:
2457 newRgbSource = GL_PIXEL_GROUP_COLOR_SGIS;
2458 newAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS;
2459 break;
2460 case GL_ALPHA:
2461 newRgbSource = GL_PIXEL_GROUP_COLOR_SGIS;
2462 newAlphaSource = GL_CURRENT_RASTER_COLOR;
2463 break;
2464 case GL_RGB:
2465 newRgbSource = GL_CURRENT_RASTER_COLOR;
2466 newAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS;
2467 break;
2468 case GL_RGBA:
2469 newRgbSource = GL_CURRENT_RASTER_COLOR;
2470 newAlphaSource = GL_CURRENT_RASTER_COLOR;
2471 break;
2472 default:
2473 _mesa_error(ctx, GL_INVALID_ENUM, "glPixelTexGenSGIX(mode)");
2474 return;
2475 }
2476
2477 if (newRgbSource == ctx->Pixel.FragmentRgbSource &&
2478 newAlphaSource == ctx->Pixel.FragmentAlphaSource)
2479 return;
2480
2481 FLUSH_VERTICES(ctx, _NEW_PIXEL);
2482 ctx->Pixel.FragmentRgbSource = newRgbSource;
2483 ctx->Pixel.FragmentAlphaSource = newAlphaSource;
2484 }
2485
2486
2487 void
2488 _mesa_PixelTexGenParameterfSGIS(GLenum target, GLfloat value)
2489 {
2490 _mesa_PixelTexGenParameteriSGIS(target, (GLint) value);
2491 }
2492
2493
2494 void
2495 _mesa_PixelTexGenParameterfvSGIS(GLenum target, const GLfloat *value)
2496 {
2497 _mesa_PixelTexGenParameteriSGIS(target, (GLint) *value);
2498 }
2499
2500
2501 void
2502 _mesa_PixelTexGenParameteriSGIS(GLenum target, GLint value)
2503 {
2504 GET_CURRENT_CONTEXT(ctx);
2505 ASSERT_OUTSIDE_BEGIN_END(ctx);
2506
2507 if (value != GL_CURRENT_RASTER_COLOR && value != GL_PIXEL_GROUP_COLOR_SGIS) {
2508 _mesa_error(ctx, GL_INVALID_ENUM, "glPixelTexGenParameterSGIS(value)");
2509 return;
2510 }
2511
2512 switch (target) {
2513 case GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS:
2514 if (ctx->Pixel.FragmentRgbSource == (GLenum) value)
2515 return;
2516 FLUSH_VERTICES(ctx, _NEW_PIXEL);
2517 ctx->Pixel.FragmentRgbSource = (GLenum) value;
2518 break;
2519 case GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS:
2520 if (ctx->Pixel.FragmentAlphaSource == (GLenum) value)
2521 return;
2522 FLUSH_VERTICES(ctx, _NEW_PIXEL);
2523 ctx->Pixel.FragmentAlphaSource = (GLenum) value;
2524 break;
2525 default:
2526 _mesa_error(ctx, GL_INVALID_ENUM, "glPixelTexGenParameterSGIS(target)");
2527 return;
2528 }
2529 }
2530
2531
2532 void
2533 _mesa_PixelTexGenParameterivSGIS(GLenum target, const GLint *value)
2534 {
2535 _mesa_PixelTexGenParameteriSGIS(target, *value);
2536 }
2537
2538
2539 void
2540 _mesa_GetPixelTexGenParameterfvSGIS(GLenum target, GLfloat *value)
2541 {
2542 GET_CURRENT_CONTEXT(ctx);
2543 ASSERT_OUTSIDE_BEGIN_END(ctx);
2544
2545 if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
2546 *value = (GLfloat) ctx->Pixel.FragmentRgbSource;
2547 }
2548 else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
2549 *value = (GLfloat) ctx->Pixel.FragmentAlphaSource;
2550 }
2551 else {
2552 _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterfvSGIS(target)");
2553 }
2554 }
2555
2556
2557 void
2558 _mesa_GetPixelTexGenParameterivSGIS(GLenum target, GLint *value)
2559 {
2560 GET_CURRENT_CONTEXT(ctx);
2561 ASSERT_OUTSIDE_BEGIN_END(ctx);
2562
2563 if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
2564 *value = (GLint) ctx->Pixel.FragmentRgbSource;
2565 }
2566 else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
2567 *value = (GLint) ctx->Pixel.FragmentAlphaSource;
2568 }
2569 else {
2570 _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterivSGIS(target)");
2571 }
2572 }