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c811f2a9c74cc7fd0b8ce28d61e87e4470fdb63f
[mesa.git] / src / mesa / main / enable.c
1 /**
2 * \file enable.c
3 * Enable/disable/query GL capabilities.
4 */
5
6 /*
7 * Mesa 3-D graphics library
8 *
9 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
25 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 */
28
29
30 #include "glheader.h"
31 #include "clip.h"
32 #include "context.h"
33 #include "enable.h"
34 #include "light.h"
35 #include "simple_list.h"
36 #include "mfeatures.h"
37 #include "mtypes.h"
38 #include "enums.h"
39 #include "api_arrayelt.h"
40 #include "texstate.h"
41
42
43
44 #define CHECK_EXTENSION(EXTNAME, CAP) \
45 if (!ctx->Extensions.EXTNAME) { \
46 goto invalid_enum_error; \
47 }
48
49
50 /**
51 * Helper to enable/disable client-side state.
52 */
53 static void
54 client_state(struct gl_context *ctx, GLenum cap, GLboolean state)
55 {
56 struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
57 GLbitfield64 flag;
58 GLboolean *var;
59
60 switch (cap) {
61 case GL_VERTEX_ARRAY:
62 var = &arrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled;
63 flag = VERT_BIT_POS;
64 break;
65 case GL_NORMAL_ARRAY:
66 var = &arrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled;
67 flag = VERT_BIT_NORMAL;
68 break;
69 case GL_COLOR_ARRAY:
70 var = &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled;
71 flag = VERT_BIT_COLOR0;
72 break;
73 case GL_INDEX_ARRAY:
74 var = &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled;
75 flag = VERT_BIT_COLOR_INDEX;
76 break;
77 case GL_TEXTURE_COORD_ARRAY:
78 var = &arrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].Enabled;
79 flag = VERT_BIT_TEX(ctx->Array.ActiveTexture);
80 break;
81 case GL_EDGE_FLAG_ARRAY:
82 var = &arrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled;
83 flag = VERT_BIT_EDGEFLAG;
84 break;
85 case GL_FOG_COORDINATE_ARRAY_EXT:
86 var = &arrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled;
87 flag = VERT_BIT_FOG;
88 break;
89 case GL_SECONDARY_COLOR_ARRAY_EXT:
90 var = &arrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled;
91 flag = VERT_BIT_COLOR1;
92 break;
93
94 #if FEATURE_point_size_array
95 case GL_POINT_SIZE_ARRAY_OES:
96 var = &arrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Enabled;
97 flag = VERT_BIT_POINT_SIZE;
98 break;
99 #endif
100
101 #if FEATURE_NV_vertex_program
102 case GL_VERTEX_ATTRIB_ARRAY0_NV:
103 case GL_VERTEX_ATTRIB_ARRAY1_NV:
104 case GL_VERTEX_ATTRIB_ARRAY2_NV:
105 case GL_VERTEX_ATTRIB_ARRAY3_NV:
106 case GL_VERTEX_ATTRIB_ARRAY4_NV:
107 case GL_VERTEX_ATTRIB_ARRAY5_NV:
108 case GL_VERTEX_ATTRIB_ARRAY6_NV:
109 case GL_VERTEX_ATTRIB_ARRAY7_NV:
110 case GL_VERTEX_ATTRIB_ARRAY8_NV:
111 case GL_VERTEX_ATTRIB_ARRAY9_NV:
112 case GL_VERTEX_ATTRIB_ARRAY10_NV:
113 case GL_VERTEX_ATTRIB_ARRAY11_NV:
114 case GL_VERTEX_ATTRIB_ARRAY12_NV:
115 case GL_VERTEX_ATTRIB_ARRAY13_NV:
116 case GL_VERTEX_ATTRIB_ARRAY14_NV:
117 case GL_VERTEX_ATTRIB_ARRAY15_NV:
118 CHECK_EXTENSION(NV_vertex_program, cap);
119 {
120 GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;
121 ASSERT(VERT_ATTRIB_GENERIC(n) < Elements(arrayObj->VertexAttrib));
122 var = &arrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(n)].Enabled;
123 flag = VERT_BIT_GENERIC(n);
124 }
125 break;
126 #endif /* FEATURE_NV_vertex_program */
127
128 /* GL_NV_primitive_restart */
129 case GL_PRIMITIVE_RESTART_NV:
130 if (!ctx->Extensions.NV_primitive_restart) {
131 goto invalid_enum_error;
132 }
133 var = &ctx->Array.PrimitiveRestart;
134 flag = 0;
135 break;
136
137 default:
138 goto invalid_enum_error;
139 }
140
141 if (*var == state)
142 return;
143
144 FLUSH_VERTICES(ctx, _NEW_ARRAY);
145
146 _ae_invalidate_state(ctx, _NEW_ARRAY);
147
148 *var = state;
149
150 if (state)
151 arrayObj->_Enabled |= flag;
152 else
153 arrayObj->_Enabled &= ~flag;
154
155 arrayObj->NewArrays |= flag;
156
157 if (ctx->Driver.Enable) {
158 ctx->Driver.Enable( ctx, cap, state );
159 }
160
161 return;
162
163 invalid_enum_error:
164 _mesa_error(ctx, GL_INVALID_ENUM, "gl%sClientState(%s)",
165 state ? "Enable" : "Disable", _mesa_lookup_enum_by_nr(cap));
166 }
167
168
169 /**
170 * Enable GL capability.
171 * \param cap state to enable/disable.
172 *
173 * Get's the current context, assures that we're outside glBegin()/glEnd() and
174 * calls client_state().
175 */
176 void GLAPIENTRY
177 _mesa_EnableClientState( GLenum cap )
178 {
179 GET_CURRENT_CONTEXT(ctx);
180 ASSERT_OUTSIDE_BEGIN_END(ctx);
181 client_state( ctx, cap, GL_TRUE );
182 }
183
184
185 /**
186 * Disable GL capability.
187 * \param cap state to enable/disable.
188 *
189 * Get's the current context, assures that we're outside glBegin()/glEnd() and
190 * calls client_state().
191 */
192 void GLAPIENTRY
193 _mesa_DisableClientState( GLenum cap )
194 {
195 GET_CURRENT_CONTEXT(ctx);
196 ASSERT_OUTSIDE_BEGIN_END(ctx);
197 client_state( ctx, cap, GL_FALSE );
198 }
199
200
201 #undef CHECK_EXTENSION
202 #define CHECK_EXTENSION(EXTNAME, CAP) \
203 if (!ctx->Extensions.EXTNAME) { \
204 goto invalid_enum_error; \
205 }
206
207 #define CHECK_EXTENSION2(EXT1, EXT2, CAP) \
208 if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) { \
209 goto invalid_enum_error; \
210 }
211
212
213
214 /**
215 * Return pointer to current texture unit for setting/getting coordinate
216 * state.
217 * Note that we'll set GL_INVALID_OPERATION and return NULL if the active
218 * texture unit is higher than the number of supported coordinate units.
219 */
220 static struct gl_texture_unit *
221 get_texcoord_unit(struct gl_context *ctx)
222 {
223 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
224 _mesa_error(ctx, GL_INVALID_OPERATION, "glEnable/Disable(texcoord unit)");
225 return NULL;
226 }
227 else {
228 return &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
229 }
230 }
231
232
233 /**
234 * Helper function to enable or disable a texture target.
235 * \param bit one of the TEXTURE_x_BIT values
236 * \return GL_TRUE if state is changing or GL_FALSE if no change
237 */
238 static GLboolean
239 enable_texture(struct gl_context *ctx, GLboolean state, GLbitfield texBit)
240 {
241 struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
242 const GLbitfield newenabled = state
243 ? (texUnit->Enabled | texBit) : (texUnit->Enabled & ~texBit);
244
245 if (texUnit->Enabled == newenabled)
246 return GL_FALSE;
247
248 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
249 texUnit->Enabled = newenabled;
250 return GL_TRUE;
251 }
252
253
254 /**
255 * Helper function to enable or disable state.
256 *
257 * \param ctx GL context.
258 * \param cap the state to enable/disable
259 * \param state whether to enable or disable the specified capability.
260 *
261 * Updates the current context and flushes the vertices as needed. For
262 * capabilities associated with extensions it verifies that those extensions
263 * are effectivly present before updating. Notifies the driver via
264 * dd_function_table::Enable.
265 */
266 void
267 _mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
268 {
269 if (MESA_VERBOSE & VERBOSE_API)
270 _mesa_debug(ctx, "%s %s (newstate is %x)\n",
271 state ? "glEnable" : "glDisable",
272 _mesa_lookup_enum_by_nr(cap),
273 ctx->NewState);
274
275 switch (cap) {
276 case GL_ALPHA_TEST:
277 if (ctx->Color.AlphaEnabled == state)
278 return;
279 FLUSH_VERTICES(ctx, _NEW_COLOR);
280 ctx->Color.AlphaEnabled = state;
281 break;
282 case GL_AUTO_NORMAL:
283 if (ctx->Eval.AutoNormal == state)
284 return;
285 FLUSH_VERTICES(ctx, _NEW_EVAL);
286 ctx->Eval.AutoNormal = state;
287 break;
288 case GL_BLEND:
289 {
290 GLbitfield newEnabled =
291 state * ((1 << ctx->Const.MaxDrawBuffers) - 1);
292 if (newEnabled != ctx->Color.BlendEnabled) {
293 FLUSH_VERTICES(ctx, _NEW_COLOR);
294 ctx->Color.BlendEnabled = newEnabled;
295 }
296 }
297 break;
298 #if FEATURE_userclip
299 case GL_CLIP_DISTANCE0:
300 case GL_CLIP_DISTANCE1:
301 case GL_CLIP_DISTANCE2:
302 case GL_CLIP_DISTANCE3:
303 case GL_CLIP_DISTANCE4:
304 case GL_CLIP_DISTANCE5:
305 case GL_CLIP_DISTANCE6:
306 case GL_CLIP_DISTANCE7:
307 {
308 const GLuint p = cap - GL_CLIP_DISTANCE0;
309
310 if (p >= ctx->Const.MaxClipPlanes)
311 goto invalid_enum_error;
312
313 if ((ctx->Transform.ClipPlanesEnabled & (1 << p))
314 == ((GLuint) state << p))
315 return;
316
317 FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
318
319 if (state) {
320 ctx->Transform.ClipPlanesEnabled |= (1 << p);
321 _mesa_update_clip_plane(ctx, p);
322 }
323 else {
324 ctx->Transform.ClipPlanesEnabled &= ~(1 << p);
325 }
326 }
327 break;
328 #endif
329 case GL_COLOR_MATERIAL:
330 if (ctx->Light.ColorMaterialEnabled == state)
331 return;
332 FLUSH_VERTICES(ctx, _NEW_LIGHT);
333 FLUSH_CURRENT(ctx, 0);
334 ctx->Light.ColorMaterialEnabled = state;
335 if (state) {
336 _mesa_update_color_material( ctx,
337 ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
338 }
339 break;
340 case GL_CULL_FACE:
341 if (ctx->Polygon.CullFlag == state)
342 return;
343 FLUSH_VERTICES(ctx, _NEW_POLYGON);
344 ctx->Polygon.CullFlag = state;
345 break;
346 case GL_DEPTH_TEST:
347 if (ctx->Depth.Test == state)
348 return;
349 FLUSH_VERTICES(ctx, _NEW_DEPTH);
350 ctx->Depth.Test = state;
351 break;
352 case GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB:
353 ctx->Debug.SyncOutput = state;
354 break;
355 case GL_DITHER:
356 if (ctx->Color.DitherFlag == state)
357 return;
358 FLUSH_VERTICES(ctx, _NEW_COLOR);
359 ctx->Color.DitherFlag = state;
360 break;
361 case GL_FOG:
362 if (ctx->Fog.Enabled == state)
363 return;
364 FLUSH_VERTICES(ctx, _NEW_FOG);
365 ctx->Fog.Enabled = state;
366 break;
367 case GL_LIGHT0:
368 case GL_LIGHT1:
369 case GL_LIGHT2:
370 case GL_LIGHT3:
371 case GL_LIGHT4:
372 case GL_LIGHT5:
373 case GL_LIGHT6:
374 case GL_LIGHT7:
375 if (ctx->Light.Light[cap-GL_LIGHT0].Enabled == state)
376 return;
377 FLUSH_VERTICES(ctx, _NEW_LIGHT);
378 ctx->Light.Light[cap-GL_LIGHT0].Enabled = state;
379 if (state) {
380 insert_at_tail(&ctx->Light.EnabledList,
381 &ctx->Light.Light[cap-GL_LIGHT0]);
382 }
383 else {
384 remove_from_list(&ctx->Light.Light[cap-GL_LIGHT0]);
385 }
386 break;
387 case GL_LIGHTING:
388 if (ctx->Light.Enabled == state)
389 return;
390 FLUSH_VERTICES(ctx, _NEW_LIGHT);
391 ctx->Light.Enabled = state;
392 if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
393 ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
394 else
395 ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
396 break;
397 case GL_LINE_SMOOTH:
398 if (ctx->Line.SmoothFlag == state)
399 return;
400 FLUSH_VERTICES(ctx, _NEW_LINE);
401 ctx->Line.SmoothFlag = state;
402 ctx->_TriangleCaps ^= DD_LINE_SMOOTH;
403 break;
404 case GL_LINE_STIPPLE:
405 if (ctx->Line.StippleFlag == state)
406 return;
407 FLUSH_VERTICES(ctx, _NEW_LINE);
408 ctx->Line.StippleFlag = state;
409 ctx->_TriangleCaps ^= DD_LINE_STIPPLE;
410 break;
411 case GL_INDEX_LOGIC_OP:
412 if (ctx->Color.IndexLogicOpEnabled == state)
413 return;
414 FLUSH_VERTICES(ctx, _NEW_COLOR);
415 ctx->Color.IndexLogicOpEnabled = state;
416 break;
417 case GL_COLOR_LOGIC_OP:
418 if (ctx->Color.ColorLogicOpEnabled == state)
419 return;
420 FLUSH_VERTICES(ctx, _NEW_COLOR);
421 ctx->Color.ColorLogicOpEnabled = state;
422 break;
423 case GL_MAP1_COLOR_4:
424 if (ctx->Eval.Map1Color4 == state)
425 return;
426 FLUSH_VERTICES(ctx, _NEW_EVAL);
427 ctx->Eval.Map1Color4 = state;
428 break;
429 case GL_MAP1_INDEX:
430 if (ctx->Eval.Map1Index == state)
431 return;
432 FLUSH_VERTICES(ctx, _NEW_EVAL);
433 ctx->Eval.Map1Index = state;
434 break;
435 case GL_MAP1_NORMAL:
436 if (ctx->Eval.Map1Normal == state)
437 return;
438 FLUSH_VERTICES(ctx, _NEW_EVAL);
439 ctx->Eval.Map1Normal = state;
440 break;
441 case GL_MAP1_TEXTURE_COORD_1:
442 if (ctx->Eval.Map1TextureCoord1 == state)
443 return;
444 FLUSH_VERTICES(ctx, _NEW_EVAL);
445 ctx->Eval.Map1TextureCoord1 = state;
446 break;
447 case GL_MAP1_TEXTURE_COORD_2:
448 if (ctx->Eval.Map1TextureCoord2 == state)
449 return;
450 FLUSH_VERTICES(ctx, _NEW_EVAL);
451 ctx->Eval.Map1TextureCoord2 = state;
452 break;
453 case GL_MAP1_TEXTURE_COORD_3:
454 if (ctx->Eval.Map1TextureCoord3 == state)
455 return;
456 FLUSH_VERTICES(ctx, _NEW_EVAL);
457 ctx->Eval.Map1TextureCoord3 = state;
458 break;
459 case GL_MAP1_TEXTURE_COORD_4:
460 if (ctx->Eval.Map1TextureCoord4 == state)
461 return;
462 FLUSH_VERTICES(ctx, _NEW_EVAL);
463 ctx->Eval.Map1TextureCoord4 = state;
464 break;
465 case GL_MAP1_VERTEX_3:
466 if (ctx->Eval.Map1Vertex3 == state)
467 return;
468 FLUSH_VERTICES(ctx, _NEW_EVAL);
469 ctx->Eval.Map1Vertex3 = state;
470 break;
471 case GL_MAP1_VERTEX_4:
472 if (ctx->Eval.Map1Vertex4 == state)
473 return;
474 FLUSH_VERTICES(ctx, _NEW_EVAL);
475 ctx->Eval.Map1Vertex4 = state;
476 break;
477 case GL_MAP2_COLOR_4:
478 if (ctx->Eval.Map2Color4 == state)
479 return;
480 FLUSH_VERTICES(ctx, _NEW_EVAL);
481 ctx->Eval.Map2Color4 = state;
482 break;
483 case GL_MAP2_INDEX:
484 if (ctx->Eval.Map2Index == state)
485 return;
486 FLUSH_VERTICES(ctx, _NEW_EVAL);
487 ctx->Eval.Map2Index = state;
488 break;
489 case GL_MAP2_NORMAL:
490 if (ctx->Eval.Map2Normal == state)
491 return;
492 FLUSH_VERTICES(ctx, _NEW_EVAL);
493 ctx->Eval.Map2Normal = state;
494 break;
495 case GL_MAP2_TEXTURE_COORD_1:
496 if (ctx->Eval.Map2TextureCoord1 == state)
497 return;
498 FLUSH_VERTICES(ctx, _NEW_EVAL);
499 ctx->Eval.Map2TextureCoord1 = state;
500 break;
501 case GL_MAP2_TEXTURE_COORD_2:
502 if (ctx->Eval.Map2TextureCoord2 == state)
503 return;
504 FLUSH_VERTICES(ctx, _NEW_EVAL);
505 ctx->Eval.Map2TextureCoord2 = state;
506 break;
507 case GL_MAP2_TEXTURE_COORD_3:
508 if (ctx->Eval.Map2TextureCoord3 == state)
509 return;
510 FLUSH_VERTICES(ctx, _NEW_EVAL);
511 ctx->Eval.Map2TextureCoord3 = state;
512 break;
513 case GL_MAP2_TEXTURE_COORD_4:
514 if (ctx->Eval.Map2TextureCoord4 == state)
515 return;
516 FLUSH_VERTICES(ctx, _NEW_EVAL);
517 ctx->Eval.Map2TextureCoord4 = state;
518 break;
519 case GL_MAP2_VERTEX_3:
520 if (ctx->Eval.Map2Vertex3 == state)
521 return;
522 FLUSH_VERTICES(ctx, _NEW_EVAL);
523 ctx->Eval.Map2Vertex3 = state;
524 break;
525 case GL_MAP2_VERTEX_4:
526 if (ctx->Eval.Map2Vertex4 == state)
527 return;
528 FLUSH_VERTICES(ctx, _NEW_EVAL);
529 ctx->Eval.Map2Vertex4 = state;
530 break;
531 case GL_NORMALIZE:
532 if (ctx->Transform.Normalize == state)
533 return;
534 FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
535 ctx->Transform.Normalize = state;
536 break;
537 case GL_POINT_SMOOTH:
538 if (ctx->Point.SmoothFlag == state)
539 return;
540 FLUSH_VERTICES(ctx, _NEW_POINT);
541 ctx->Point.SmoothFlag = state;
542 ctx->_TriangleCaps ^= DD_POINT_SMOOTH;
543 break;
544 case GL_POLYGON_SMOOTH:
545 if (ctx->Polygon.SmoothFlag == state)
546 return;
547 FLUSH_VERTICES(ctx, _NEW_POLYGON);
548 ctx->Polygon.SmoothFlag = state;
549 ctx->_TriangleCaps ^= DD_TRI_SMOOTH;
550 break;
551 case GL_POLYGON_STIPPLE:
552 if (ctx->Polygon.StippleFlag == state)
553 return;
554 FLUSH_VERTICES(ctx, _NEW_POLYGON);
555 ctx->Polygon.StippleFlag = state;
556 ctx->_TriangleCaps ^= DD_TRI_STIPPLE;
557 break;
558 case GL_POLYGON_OFFSET_POINT:
559 if (ctx->Polygon.OffsetPoint == state)
560 return;
561 FLUSH_VERTICES(ctx, _NEW_POLYGON);
562 ctx->Polygon.OffsetPoint = state;
563 break;
564 case GL_POLYGON_OFFSET_LINE:
565 if (ctx->Polygon.OffsetLine == state)
566 return;
567 FLUSH_VERTICES(ctx, _NEW_POLYGON);
568 ctx->Polygon.OffsetLine = state;
569 break;
570 case GL_POLYGON_OFFSET_FILL:
571 if (ctx->Polygon.OffsetFill == state)
572 return;
573 FLUSH_VERTICES(ctx, _NEW_POLYGON);
574 ctx->Polygon.OffsetFill = state;
575 break;
576 case GL_RESCALE_NORMAL_EXT:
577 if (ctx->Transform.RescaleNormals == state)
578 return;
579 FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
580 ctx->Transform.RescaleNormals = state;
581 break;
582 case GL_SCISSOR_TEST:
583 if (ctx->Scissor.Enabled == state)
584 return;
585 FLUSH_VERTICES(ctx, _NEW_SCISSOR);
586 ctx->Scissor.Enabled = state;
587 break;
588 case GL_STENCIL_TEST:
589 if (ctx->Stencil.Enabled == state)
590 return;
591 FLUSH_VERTICES(ctx, _NEW_STENCIL);
592 ctx->Stencil.Enabled = state;
593 break;
594 case GL_TEXTURE_1D:
595 if (!enable_texture(ctx, state, TEXTURE_1D_BIT)) {
596 return;
597 }
598 break;
599 case GL_TEXTURE_2D:
600 if (!enable_texture(ctx, state, TEXTURE_2D_BIT)) {
601 return;
602 }
603 break;
604 case GL_TEXTURE_3D:
605 if (!enable_texture(ctx, state, TEXTURE_3D_BIT)) {
606 return;
607 }
608 break;
609 case GL_TEXTURE_GEN_S:
610 case GL_TEXTURE_GEN_T:
611 case GL_TEXTURE_GEN_R:
612 case GL_TEXTURE_GEN_Q:
613 {
614 struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
615 if (texUnit) {
616 GLbitfield coordBit = S_BIT << (cap - GL_TEXTURE_GEN_S);
617 GLbitfield newenabled = texUnit->TexGenEnabled & ~coordBit;
618 if (state)
619 newenabled |= coordBit;
620 if (texUnit->TexGenEnabled == newenabled)
621 return;
622 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
623 texUnit->TexGenEnabled = newenabled;
624 }
625 }
626 break;
627
628 #if FEATURE_ES1
629 case GL_TEXTURE_GEN_STR_OES:
630 /* disable S, T, and R at the same time */
631 {
632 struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
633 if (texUnit) {
634 GLuint newenabled =
635 texUnit->TexGenEnabled & ~STR_BITS;
636 if (state)
637 newenabled |= STR_BITS;
638 if (texUnit->TexGenEnabled == newenabled)
639 return;
640 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
641 texUnit->TexGenEnabled = newenabled;
642 }
643 }
644 break;
645 #endif
646
647 /* client-side state */
648 case GL_VERTEX_ARRAY:
649 case GL_NORMAL_ARRAY:
650 case GL_COLOR_ARRAY:
651 case GL_INDEX_ARRAY:
652 case GL_TEXTURE_COORD_ARRAY:
653 case GL_EDGE_FLAG_ARRAY:
654 case GL_FOG_COORDINATE_ARRAY_EXT:
655 case GL_SECONDARY_COLOR_ARRAY_EXT:
656 case GL_POINT_SIZE_ARRAY_OES:
657 client_state( ctx, cap, state );
658 return;
659
660 /* GL_ARB_texture_cube_map */
661 case GL_TEXTURE_CUBE_MAP_ARB:
662 CHECK_EXTENSION(ARB_texture_cube_map, cap);
663 if (!enable_texture(ctx, state, TEXTURE_CUBE_BIT)) {
664 return;
665 }
666 break;
667
668 /* GL_EXT_secondary_color */
669 case GL_COLOR_SUM_EXT:
670 CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program, cap);
671 if (ctx->Fog.ColorSumEnabled == state)
672 return;
673 FLUSH_VERTICES(ctx, _NEW_FOG);
674 ctx->Fog.ColorSumEnabled = state;
675 break;
676
677 /* GL_ARB_multisample */
678 case GL_MULTISAMPLE_ARB:
679 if (ctx->Multisample.Enabled == state)
680 return;
681 FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
682 ctx->Multisample.Enabled = state;
683 break;
684 case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
685 if (ctx->Multisample.SampleAlphaToCoverage == state)
686 return;
687 FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
688 ctx->Multisample.SampleAlphaToCoverage = state;
689 break;
690 case GL_SAMPLE_ALPHA_TO_ONE_ARB:
691 if (ctx->Multisample.SampleAlphaToOne == state)
692 return;
693 FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
694 ctx->Multisample.SampleAlphaToOne = state;
695 break;
696 case GL_SAMPLE_COVERAGE_ARB:
697 if (ctx->Multisample.SampleCoverage == state)
698 return;
699 FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
700 ctx->Multisample.SampleCoverage = state;
701 break;
702 case GL_SAMPLE_COVERAGE_INVERT_ARB:
703 if (ctx->Multisample.SampleCoverageInvert == state)
704 return;
705 FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
706 ctx->Multisample.SampleCoverageInvert = state;
707 break;
708
709 /* GL_IBM_rasterpos_clip */
710 case GL_RASTER_POSITION_UNCLIPPED_IBM:
711 CHECK_EXTENSION(IBM_rasterpos_clip, cap);
712 if (ctx->Transform.RasterPositionUnclipped == state)
713 return;
714 FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
715 ctx->Transform.RasterPositionUnclipped = state;
716 break;
717
718 /* GL_NV_point_sprite */
719 case GL_POINT_SPRITE_NV:
720 CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite, cap);
721 if (ctx->Point.PointSprite == state)
722 return;
723 FLUSH_VERTICES(ctx, _NEW_POINT);
724 ctx->Point.PointSprite = state;
725 break;
726
727 #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
728 case GL_VERTEX_PROGRAM_ARB:
729 CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);
730 if (ctx->VertexProgram.Enabled == state)
731 return;
732 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
733 ctx->VertexProgram.Enabled = state;
734 break;
735 case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:
736 CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);
737 if (ctx->VertexProgram.PointSizeEnabled == state)
738 return;
739 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
740 ctx->VertexProgram.PointSizeEnabled = state;
741 break;
742 case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:
743 CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program, cap);
744 if (ctx->VertexProgram.TwoSideEnabled == state)
745 return;
746 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
747 ctx->VertexProgram.TwoSideEnabled = state;
748 break;
749 #endif
750 #if FEATURE_NV_vertex_program
751 case GL_MAP1_VERTEX_ATTRIB0_4_NV:
752 case GL_MAP1_VERTEX_ATTRIB1_4_NV:
753 case GL_MAP1_VERTEX_ATTRIB2_4_NV:
754 case GL_MAP1_VERTEX_ATTRIB3_4_NV:
755 case GL_MAP1_VERTEX_ATTRIB4_4_NV:
756 case GL_MAP1_VERTEX_ATTRIB5_4_NV:
757 case GL_MAP1_VERTEX_ATTRIB6_4_NV:
758 case GL_MAP1_VERTEX_ATTRIB7_4_NV:
759 case GL_MAP1_VERTEX_ATTRIB8_4_NV:
760 case GL_MAP1_VERTEX_ATTRIB9_4_NV:
761 case GL_MAP1_VERTEX_ATTRIB10_4_NV:
762 case GL_MAP1_VERTEX_ATTRIB11_4_NV:
763 case GL_MAP1_VERTEX_ATTRIB12_4_NV:
764 case GL_MAP1_VERTEX_ATTRIB13_4_NV:
765 case GL_MAP1_VERTEX_ATTRIB14_4_NV:
766 case GL_MAP1_VERTEX_ATTRIB15_4_NV:
767 CHECK_EXTENSION(NV_vertex_program, cap);
768 {
769 const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);
770 FLUSH_VERTICES(ctx, _NEW_EVAL);
771 ctx->Eval.Map1Attrib[map] = state;
772 }
773 break;
774 case GL_MAP2_VERTEX_ATTRIB0_4_NV:
775 case GL_MAP2_VERTEX_ATTRIB1_4_NV:
776 case GL_MAP2_VERTEX_ATTRIB2_4_NV:
777 case GL_MAP2_VERTEX_ATTRIB3_4_NV:
778 case GL_MAP2_VERTEX_ATTRIB4_4_NV:
779 case GL_MAP2_VERTEX_ATTRIB5_4_NV:
780 case GL_MAP2_VERTEX_ATTRIB6_4_NV:
781 case GL_MAP2_VERTEX_ATTRIB7_4_NV:
782 case GL_MAP2_VERTEX_ATTRIB8_4_NV:
783 case GL_MAP2_VERTEX_ATTRIB9_4_NV:
784 case GL_MAP2_VERTEX_ATTRIB10_4_NV:
785 case GL_MAP2_VERTEX_ATTRIB11_4_NV:
786 case GL_MAP2_VERTEX_ATTRIB12_4_NV:
787 case GL_MAP2_VERTEX_ATTRIB13_4_NV:
788 case GL_MAP2_VERTEX_ATTRIB14_4_NV:
789 case GL_MAP2_VERTEX_ATTRIB15_4_NV:
790 CHECK_EXTENSION(NV_vertex_program, cap);
791 {
792 const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);
793 FLUSH_VERTICES(ctx, _NEW_EVAL);
794 ctx->Eval.Map2Attrib[map] = state;
795 }
796 break;
797 #endif /* FEATURE_NV_vertex_program */
798
799 #if FEATURE_NV_fragment_program
800 case GL_FRAGMENT_PROGRAM_NV:
801 CHECK_EXTENSION(NV_fragment_program, cap);
802 if (ctx->FragmentProgram.Enabled == state)
803 return;
804 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
805 ctx->FragmentProgram.Enabled = state;
806 break;
807 #endif /* FEATURE_NV_fragment_program */
808
809 /* GL_NV_texture_rectangle */
810 case GL_TEXTURE_RECTANGLE_NV:
811 CHECK_EXTENSION(NV_texture_rectangle, cap);
812 if (!enable_texture(ctx, state, TEXTURE_RECT_BIT)) {
813 return;
814 }
815 break;
816
817 /* GL_EXT_stencil_two_side */
818 case GL_STENCIL_TEST_TWO_SIDE_EXT:
819 CHECK_EXTENSION(EXT_stencil_two_side, cap);
820 if (ctx->Stencil.TestTwoSide == state)
821 return;
822 FLUSH_VERTICES(ctx, _NEW_STENCIL);
823 ctx->Stencil.TestTwoSide = state;
824 if (state) {
825 ctx->Stencil._BackFace = 2;
826 } else {
827 ctx->Stencil._BackFace = 1;
828 }
829 break;
830
831 #if FEATURE_ARB_fragment_program
832 case GL_FRAGMENT_PROGRAM_ARB:
833 CHECK_EXTENSION(ARB_fragment_program, cap);
834 if (ctx->FragmentProgram.Enabled == state)
835 return;
836 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
837 ctx->FragmentProgram.Enabled = state;
838 break;
839 #endif /* FEATURE_ARB_fragment_program */
840
841 /* GL_EXT_depth_bounds_test */
842 case GL_DEPTH_BOUNDS_TEST_EXT:
843 CHECK_EXTENSION(EXT_depth_bounds_test, cap);
844 if (ctx->Depth.BoundsTest == state)
845 return;
846 FLUSH_VERTICES(ctx, _NEW_DEPTH);
847 ctx->Depth.BoundsTest = state;
848 break;
849
850 case GL_DEPTH_CLAMP:
851 if (ctx->Transform.DepthClamp == state)
852 return;
853 CHECK_EXTENSION(ARB_depth_clamp, cap);
854 FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
855 ctx->Transform.DepthClamp = state;
856 break;
857
858 #if FEATURE_ATI_fragment_shader
859 case GL_FRAGMENT_SHADER_ATI:
860 CHECK_EXTENSION(ATI_fragment_shader, cap);
861 if (ctx->ATIFragmentShader.Enabled == state)
862 return;
863 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
864 ctx->ATIFragmentShader.Enabled = state;
865 break;
866 #endif
867
868 /* GL_MESA_texture_array */
869 case GL_TEXTURE_1D_ARRAY_EXT:
870 CHECK_EXTENSION(MESA_texture_array, cap);
871 if (!enable_texture(ctx, state, TEXTURE_1D_ARRAY_BIT)) {
872 return;
873 }
874 break;
875
876 case GL_TEXTURE_2D_ARRAY_EXT:
877 CHECK_EXTENSION(MESA_texture_array, cap);
878 if (!enable_texture(ctx, state, TEXTURE_2D_ARRAY_BIT)) {
879 return;
880 }
881 break;
882
883 case GL_TEXTURE_CUBE_MAP_SEAMLESS:
884 CHECK_EXTENSION(ARB_seamless_cube_map, cap);
885 if (ctx->Texture.CubeMapSeamless != state) {
886 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
887 ctx->Texture.CubeMapSeamless = state;
888 }
889 break;
890
891 #if FEATURE_EXT_transform_feedback
892 case GL_RASTERIZER_DISCARD:
893 CHECK_EXTENSION(EXT_transform_feedback, cap);
894 if (ctx->RasterDiscard != state) {
895 FLUSH_VERTICES(ctx, _NEW_RASTERIZER_DISCARD);
896 ctx->RasterDiscard = state;
897 }
898 break;
899 #endif
900
901 /* GL 3.1 primitive restart. Note: this enum is different from
902 * GL_PRIMITIVE_RESTART_NV (which is client state).
903 */
904 case GL_PRIMITIVE_RESTART:
905 if (ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {
906 goto invalid_enum_error;
907 }
908 if (ctx->Array.PrimitiveRestart != state) {
909 FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
910 ctx->Array.PrimitiveRestart = state;
911 }
912 break;
913
914 /* GL3.0 - GL_framebuffer_sRGB */
915 case GL_FRAMEBUFFER_SRGB_EXT:
916 CHECK_EXTENSION(EXT_framebuffer_sRGB, cap);
917 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
918 ctx->Color.sRGBEnabled = state;
919 break;
920
921 /* GL_OES_EGL_image_external */
922 case GL_TEXTURE_EXTERNAL_OES:
923 CHECK_EXTENSION(OES_EGL_image_external, cap);
924 if (!enable_texture(ctx, state, TEXTURE_EXTERNAL_BIT)) {
925 return;
926 }
927 break;
928
929 default:
930 goto invalid_enum_error;
931 }
932
933 if (ctx->Driver.Enable) {
934 ctx->Driver.Enable( ctx, cap, state );
935 }
936
937 return;
938
939 invalid_enum_error:
940 _mesa_error(ctx, GL_INVALID_ENUM, "gl%s(%s)",
941 state ? "Enable" : "Disable", _mesa_lookup_enum_by_nr(cap));
942 }
943
944
945 /**
946 * Enable GL capability. Called by glEnable()
947 * \param cap state to enable.
948 */
949 void GLAPIENTRY
950 _mesa_Enable( GLenum cap )
951 {
952 GET_CURRENT_CONTEXT(ctx);
953 ASSERT_OUTSIDE_BEGIN_END(ctx);
954
955 _mesa_set_enable( ctx, cap, GL_TRUE );
956 }
957
958
959 /**
960 * Disable GL capability. Called by glDisable()
961 * \param cap state to disable.
962 */
963 void GLAPIENTRY
964 _mesa_Disable( GLenum cap )
965 {
966 GET_CURRENT_CONTEXT(ctx);
967 ASSERT_OUTSIDE_BEGIN_END(ctx);
968
969 _mesa_set_enable( ctx, cap, GL_FALSE );
970 }
971
972
973
974 /**
975 * Enable/disable an indexed state var.
976 */
977 void
978 _mesa_set_enablei(struct gl_context *ctx, GLenum cap,
979 GLuint index, GLboolean state)
980 {
981 ASSERT(state == 0 || state == 1);
982 switch (cap) {
983 case GL_BLEND:
984 if (!ctx->Extensions.EXT_draw_buffers2) {
985 goto invalid_enum_error;
986 }
987 if (index >= ctx->Const.MaxDrawBuffers) {
988 _mesa_error(ctx, GL_INVALID_VALUE, "%s(index=%u)",
989 state ? "glEnableIndexed" : "glDisableIndexed", index);
990 return;
991 }
992 if (((ctx->Color.BlendEnabled >> index) & 1) != state) {
993 FLUSH_VERTICES(ctx, _NEW_COLOR);
994 if (state)
995 ctx->Color.BlendEnabled |= (1 << index);
996 else
997 ctx->Color.BlendEnabled &= ~(1 << index);
998 }
999 break;
1000 default:
1001 goto invalid_enum_error;
1002 }
1003 return;
1004
1005 invalid_enum_error:
1006 _mesa_error(ctx, GL_INVALID_ENUM, "%s(cap=%s)",
1007 state ? "glEnablei" : "glDisablei",
1008 _mesa_lookup_enum_by_nr(cap));
1009 }
1010
1011
1012 void GLAPIENTRY
1013 _mesa_DisableIndexed( GLenum cap, GLuint index )
1014 {
1015 GET_CURRENT_CONTEXT(ctx);
1016 ASSERT_OUTSIDE_BEGIN_END(ctx);
1017 _mesa_set_enablei(ctx, cap, index, GL_FALSE);
1018 }
1019
1020
1021 void GLAPIENTRY
1022 _mesa_EnableIndexed( GLenum cap, GLuint index )
1023 {
1024 GET_CURRENT_CONTEXT(ctx);
1025 ASSERT_OUTSIDE_BEGIN_END(ctx);
1026 _mesa_set_enablei(ctx, cap, index, GL_TRUE);
1027 }
1028
1029
1030 GLboolean GLAPIENTRY
1031 _mesa_IsEnabledIndexed( GLenum cap, GLuint index )
1032 {
1033 GET_CURRENT_CONTEXT(ctx);
1034 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1035 switch (cap) {
1036 case GL_BLEND:
1037 if (index >= ctx->Const.MaxDrawBuffers) {
1038 _mesa_error(ctx, GL_INVALID_VALUE, "glIsEnabledIndexed(index=%u)",
1039 index);
1040 return GL_FALSE;
1041 }
1042 return (ctx->Color.BlendEnabled >> index) & 1;
1043 default:
1044 _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabledIndexed(cap=%s)",
1045 _mesa_lookup_enum_by_nr(cap));
1046 return GL_FALSE;
1047 }
1048 }
1049
1050
1051
1052
1053 #undef CHECK_EXTENSION
1054 #define CHECK_EXTENSION(EXTNAME) \
1055 if (!ctx->Extensions.EXTNAME) { \
1056 goto invalid_enum_error; \
1057 }
1058
1059 #undef CHECK_EXTENSION2
1060 #define CHECK_EXTENSION2(EXT1, EXT2) \
1061 if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) { \
1062 goto invalid_enum_error; \
1063 }
1064
1065
1066 /**
1067 * Helper function to determine whether a texture target is enabled.
1068 */
1069 static GLboolean
1070 is_texture_enabled(struct gl_context *ctx, GLbitfield bit)
1071 {
1072 const struct gl_texture_unit *const texUnit =
1073 &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1074 return (texUnit->Enabled & bit) ? GL_TRUE : GL_FALSE;
1075 }
1076
1077
1078 /**
1079 * Return simple enable/disable state.
1080 *
1081 * \param cap state variable to query.
1082 *
1083 * Returns the state of the specified capability from the current GL context.
1084 * For the capabilities associated with extensions verifies that those
1085 * extensions are effectively present before reporting.
1086 */
1087 GLboolean GLAPIENTRY
1088 _mesa_IsEnabled( GLenum cap )
1089 {
1090 GET_CURRENT_CONTEXT(ctx);
1091 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1092
1093 switch (cap) {
1094 case GL_ALPHA_TEST:
1095 return ctx->Color.AlphaEnabled;
1096 case GL_AUTO_NORMAL:
1097 return ctx->Eval.AutoNormal;
1098 case GL_BLEND:
1099 return ctx->Color.BlendEnabled & 1; /* return state for buffer[0] */
1100 case GL_CLIP_DISTANCE0:
1101 case GL_CLIP_DISTANCE1:
1102 case GL_CLIP_DISTANCE2:
1103 case GL_CLIP_DISTANCE3:
1104 case GL_CLIP_DISTANCE4:
1105 case GL_CLIP_DISTANCE5:
1106 case GL_CLIP_DISTANCE6:
1107 case GL_CLIP_DISTANCE7: {
1108 const GLuint p = cap - GL_CLIP_DISTANCE0;
1109
1110 if (p >= ctx->Const.MaxClipPlanes)
1111 goto invalid_enum_error;
1112
1113 return (ctx->Transform.ClipPlanesEnabled >> p) & 1;
1114 }
1115 case GL_COLOR_MATERIAL:
1116 return ctx->Light.ColorMaterialEnabled;
1117 case GL_CULL_FACE:
1118 return ctx->Polygon.CullFlag;
1119 case GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB:
1120 return ctx->Debug.SyncOutput;
1121 case GL_DEPTH_TEST:
1122 return ctx->Depth.Test;
1123 case GL_DITHER:
1124 return ctx->Color.DitherFlag;
1125 case GL_FOG:
1126 return ctx->Fog.Enabled;
1127 case GL_LIGHTING:
1128 return ctx->Light.Enabled;
1129 case GL_LIGHT0:
1130 case GL_LIGHT1:
1131 case GL_LIGHT2:
1132 case GL_LIGHT3:
1133 case GL_LIGHT4:
1134 case GL_LIGHT5:
1135 case GL_LIGHT6:
1136 case GL_LIGHT7:
1137 return ctx->Light.Light[cap-GL_LIGHT0].Enabled;
1138 case GL_LINE_SMOOTH:
1139 return ctx->Line.SmoothFlag;
1140 case GL_LINE_STIPPLE:
1141 return ctx->Line.StippleFlag;
1142 case GL_INDEX_LOGIC_OP:
1143 return ctx->Color.IndexLogicOpEnabled;
1144 case GL_COLOR_LOGIC_OP:
1145 return ctx->Color.ColorLogicOpEnabled;
1146 case GL_MAP1_COLOR_4:
1147 return ctx->Eval.Map1Color4;
1148 case GL_MAP1_INDEX:
1149 return ctx->Eval.Map1Index;
1150 case GL_MAP1_NORMAL:
1151 return ctx->Eval.Map1Normal;
1152 case GL_MAP1_TEXTURE_COORD_1:
1153 return ctx->Eval.Map1TextureCoord1;
1154 case GL_MAP1_TEXTURE_COORD_2:
1155 return ctx->Eval.Map1TextureCoord2;
1156 case GL_MAP1_TEXTURE_COORD_3:
1157 return ctx->Eval.Map1TextureCoord3;
1158 case GL_MAP1_TEXTURE_COORD_4:
1159 return ctx->Eval.Map1TextureCoord4;
1160 case GL_MAP1_VERTEX_3:
1161 return ctx->Eval.Map1Vertex3;
1162 case GL_MAP1_VERTEX_4:
1163 return ctx->Eval.Map1Vertex4;
1164 case GL_MAP2_COLOR_4:
1165 return ctx->Eval.Map2Color4;
1166 case GL_MAP2_INDEX:
1167 return ctx->Eval.Map2Index;
1168 case GL_MAP2_NORMAL:
1169 return ctx->Eval.Map2Normal;
1170 case GL_MAP2_TEXTURE_COORD_1:
1171 return ctx->Eval.Map2TextureCoord1;
1172 case GL_MAP2_TEXTURE_COORD_2:
1173 return ctx->Eval.Map2TextureCoord2;
1174 case GL_MAP2_TEXTURE_COORD_3:
1175 return ctx->Eval.Map2TextureCoord3;
1176 case GL_MAP2_TEXTURE_COORD_4:
1177 return ctx->Eval.Map2TextureCoord4;
1178 case GL_MAP2_VERTEX_3:
1179 return ctx->Eval.Map2Vertex3;
1180 case GL_MAP2_VERTEX_4:
1181 return ctx->Eval.Map2Vertex4;
1182 case GL_NORMALIZE:
1183 return ctx->Transform.Normalize;
1184 case GL_POINT_SMOOTH:
1185 return ctx->Point.SmoothFlag;
1186 case GL_POLYGON_SMOOTH:
1187 return ctx->Polygon.SmoothFlag;
1188 case GL_POLYGON_STIPPLE:
1189 return ctx->Polygon.StippleFlag;
1190 case GL_POLYGON_OFFSET_POINT:
1191 return ctx->Polygon.OffsetPoint;
1192 case GL_POLYGON_OFFSET_LINE:
1193 return ctx->Polygon.OffsetLine;
1194 case GL_POLYGON_OFFSET_FILL:
1195 return ctx->Polygon.OffsetFill;
1196 case GL_RESCALE_NORMAL_EXT:
1197 return ctx->Transform.RescaleNormals;
1198 case GL_SCISSOR_TEST:
1199 return ctx->Scissor.Enabled;
1200 case GL_STENCIL_TEST:
1201 return ctx->Stencil.Enabled;
1202 case GL_TEXTURE_1D:
1203 return is_texture_enabled(ctx, TEXTURE_1D_BIT);
1204 case GL_TEXTURE_2D:
1205 return is_texture_enabled(ctx, TEXTURE_2D_BIT);
1206 case GL_TEXTURE_3D:
1207 return is_texture_enabled(ctx, TEXTURE_3D_BIT);
1208 case GL_TEXTURE_GEN_S:
1209 case GL_TEXTURE_GEN_T:
1210 case GL_TEXTURE_GEN_R:
1211 case GL_TEXTURE_GEN_Q:
1212 {
1213 const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
1214 if (texUnit) {
1215 GLbitfield coordBit = S_BIT << (cap - GL_TEXTURE_GEN_S);
1216 return (texUnit->TexGenEnabled & coordBit) ? GL_TRUE : GL_FALSE;
1217 }
1218 }
1219 return GL_FALSE;
1220 #if FEATURE_ES1
1221 case GL_TEXTURE_GEN_STR_OES:
1222 {
1223 const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
1224 if (texUnit) {
1225 return (texUnit->TexGenEnabled & STR_BITS) == STR_BITS
1226 ? GL_TRUE : GL_FALSE;
1227 }
1228 }
1229 #endif
1230
1231 /* client-side state */
1232 case GL_VERTEX_ARRAY:
1233 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled != 0);
1234 case GL_NORMAL_ARRAY:
1235 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Enabled != 0);
1236 case GL_COLOR_ARRAY:
1237 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Enabled != 0);
1238 case GL_INDEX_ARRAY:
1239 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled != 0);
1240 case GL_TEXTURE_COORD_ARRAY:
1241 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)]
1242 .Enabled != 0);
1243 case GL_EDGE_FLAG_ARRAY:
1244 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled != 0);
1245 case GL_FOG_COORDINATE_ARRAY_EXT:
1246 CHECK_EXTENSION(EXT_fog_coord);
1247 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG].Enabled != 0);
1248 case GL_SECONDARY_COLOR_ARRAY_EXT:
1249 CHECK_EXTENSION(EXT_secondary_color);
1250 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Enabled != 0);
1251 #if FEATURE_point_size_array
1252 case GL_POINT_SIZE_ARRAY_OES:
1253 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Enabled != 0);
1254 #endif
1255
1256 /* GL_ARB_texture_cube_map */
1257 case GL_TEXTURE_CUBE_MAP_ARB:
1258 CHECK_EXTENSION(ARB_texture_cube_map);
1259 return is_texture_enabled(ctx, TEXTURE_CUBE_BIT);
1260
1261 /* GL_EXT_secondary_color */
1262 case GL_COLOR_SUM_EXT:
1263 CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program);
1264 return ctx->Fog.ColorSumEnabled;
1265
1266 /* GL_ARB_multisample */
1267 case GL_MULTISAMPLE_ARB:
1268 return ctx->Multisample.Enabled;
1269 case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
1270 return ctx->Multisample.SampleAlphaToCoverage;
1271 case GL_SAMPLE_ALPHA_TO_ONE_ARB:
1272 return ctx->Multisample.SampleAlphaToOne;
1273 case GL_SAMPLE_COVERAGE_ARB:
1274 return ctx->Multisample.SampleCoverage;
1275 case GL_SAMPLE_COVERAGE_INVERT_ARB:
1276 return ctx->Multisample.SampleCoverageInvert;
1277
1278 /* GL_IBM_rasterpos_clip */
1279 case GL_RASTER_POSITION_UNCLIPPED_IBM:
1280 CHECK_EXTENSION(IBM_rasterpos_clip);
1281 return ctx->Transform.RasterPositionUnclipped;
1282
1283 /* GL_NV_point_sprite */
1284 case GL_POINT_SPRITE_NV:
1285 CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite)
1286 return ctx->Point.PointSprite;
1287
1288 #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
1289 case GL_VERTEX_PROGRAM_ARB:
1290 CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
1291 return ctx->VertexProgram.Enabled;
1292 case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:
1293 CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
1294 return ctx->VertexProgram.PointSizeEnabled;
1295 case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:
1296 CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
1297 return ctx->VertexProgram.TwoSideEnabled;
1298 #endif
1299 #if FEATURE_NV_vertex_program
1300 case GL_VERTEX_ATTRIB_ARRAY0_NV:
1301 case GL_VERTEX_ATTRIB_ARRAY1_NV:
1302 case GL_VERTEX_ATTRIB_ARRAY2_NV:
1303 case GL_VERTEX_ATTRIB_ARRAY3_NV:
1304 case GL_VERTEX_ATTRIB_ARRAY4_NV:
1305 case GL_VERTEX_ATTRIB_ARRAY5_NV:
1306 case GL_VERTEX_ATTRIB_ARRAY6_NV:
1307 case GL_VERTEX_ATTRIB_ARRAY7_NV:
1308 case GL_VERTEX_ATTRIB_ARRAY8_NV:
1309 case GL_VERTEX_ATTRIB_ARRAY9_NV:
1310 case GL_VERTEX_ATTRIB_ARRAY10_NV:
1311 case GL_VERTEX_ATTRIB_ARRAY11_NV:
1312 case GL_VERTEX_ATTRIB_ARRAY12_NV:
1313 case GL_VERTEX_ATTRIB_ARRAY13_NV:
1314 case GL_VERTEX_ATTRIB_ARRAY14_NV:
1315 case GL_VERTEX_ATTRIB_ARRAY15_NV:
1316 CHECK_EXTENSION(NV_vertex_program);
1317 {
1318 GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;
1319 ASSERT(VERT_ATTRIB_GENERIC(n) < Elements(ctx->Array.ArrayObj->VertexAttrib));
1320 return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC(n)].Enabled != 0);
1321 }
1322 case GL_MAP1_VERTEX_ATTRIB0_4_NV:
1323 case GL_MAP1_VERTEX_ATTRIB1_4_NV:
1324 case GL_MAP1_VERTEX_ATTRIB2_4_NV:
1325 case GL_MAP1_VERTEX_ATTRIB3_4_NV:
1326 case GL_MAP1_VERTEX_ATTRIB4_4_NV:
1327 case GL_MAP1_VERTEX_ATTRIB5_4_NV:
1328 case GL_MAP1_VERTEX_ATTRIB6_4_NV:
1329 case GL_MAP1_VERTEX_ATTRIB7_4_NV:
1330 case GL_MAP1_VERTEX_ATTRIB8_4_NV:
1331 case GL_MAP1_VERTEX_ATTRIB9_4_NV:
1332 case GL_MAP1_VERTEX_ATTRIB10_4_NV:
1333 case GL_MAP1_VERTEX_ATTRIB11_4_NV:
1334 case GL_MAP1_VERTEX_ATTRIB12_4_NV:
1335 case GL_MAP1_VERTEX_ATTRIB13_4_NV:
1336 case GL_MAP1_VERTEX_ATTRIB14_4_NV:
1337 case GL_MAP1_VERTEX_ATTRIB15_4_NV:
1338 CHECK_EXTENSION(NV_vertex_program);
1339 {
1340 const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);
1341 return ctx->Eval.Map1Attrib[map];
1342 }
1343 case GL_MAP2_VERTEX_ATTRIB0_4_NV:
1344 case GL_MAP2_VERTEX_ATTRIB1_4_NV:
1345 case GL_MAP2_VERTEX_ATTRIB2_4_NV:
1346 case GL_MAP2_VERTEX_ATTRIB3_4_NV:
1347 case GL_MAP2_VERTEX_ATTRIB4_4_NV:
1348 case GL_MAP2_VERTEX_ATTRIB5_4_NV:
1349 case GL_MAP2_VERTEX_ATTRIB6_4_NV:
1350 case GL_MAP2_VERTEX_ATTRIB7_4_NV:
1351 case GL_MAP2_VERTEX_ATTRIB8_4_NV:
1352 case GL_MAP2_VERTEX_ATTRIB9_4_NV:
1353 case GL_MAP2_VERTEX_ATTRIB10_4_NV:
1354 case GL_MAP2_VERTEX_ATTRIB11_4_NV:
1355 case GL_MAP2_VERTEX_ATTRIB12_4_NV:
1356 case GL_MAP2_VERTEX_ATTRIB13_4_NV:
1357 case GL_MAP2_VERTEX_ATTRIB14_4_NV:
1358 case GL_MAP2_VERTEX_ATTRIB15_4_NV:
1359 CHECK_EXTENSION(NV_vertex_program);
1360 {
1361 const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);
1362 return ctx->Eval.Map2Attrib[map];
1363 }
1364 #endif /* FEATURE_NV_vertex_program */
1365
1366 #if FEATURE_NV_fragment_program
1367 case GL_FRAGMENT_PROGRAM_NV:
1368 CHECK_EXTENSION(NV_fragment_program);
1369 return ctx->FragmentProgram.Enabled;
1370 #endif /* FEATURE_NV_fragment_program */
1371
1372 /* GL_NV_texture_rectangle */
1373 case GL_TEXTURE_RECTANGLE_NV:
1374 CHECK_EXTENSION(NV_texture_rectangle);
1375 return is_texture_enabled(ctx, TEXTURE_RECT_BIT);
1376
1377 /* GL_EXT_stencil_two_side */
1378 case GL_STENCIL_TEST_TWO_SIDE_EXT:
1379 CHECK_EXTENSION(EXT_stencil_two_side);
1380 return ctx->Stencil.TestTwoSide;
1381
1382 #if FEATURE_ARB_fragment_program
1383 case GL_FRAGMENT_PROGRAM_ARB:
1384 return ctx->FragmentProgram.Enabled;
1385 #endif /* FEATURE_ARB_fragment_program */
1386
1387 /* GL_EXT_depth_bounds_test */
1388 case GL_DEPTH_BOUNDS_TEST_EXT:
1389 CHECK_EXTENSION(EXT_depth_bounds_test);
1390 return ctx->Depth.BoundsTest;
1391
1392 /* GL_ARB_depth_clamp */
1393 case GL_DEPTH_CLAMP:
1394 CHECK_EXTENSION(ARB_depth_clamp);
1395 return ctx->Transform.DepthClamp;
1396
1397 #if FEATURE_ATI_fragment_shader
1398 case GL_FRAGMENT_SHADER_ATI:
1399 CHECK_EXTENSION(ATI_fragment_shader);
1400 return ctx->ATIFragmentShader.Enabled;
1401 #endif /* FEATURE_ATI_fragment_shader */
1402
1403 case GL_TEXTURE_CUBE_MAP_SEAMLESS:
1404 CHECK_EXTENSION(ARB_seamless_cube_map);
1405 return ctx->Texture.CubeMapSeamless;
1406
1407 #if FEATURE_EXT_transform_feedback
1408 case GL_RASTERIZER_DISCARD:
1409 CHECK_EXTENSION(EXT_transform_feedback);
1410 return ctx->RasterDiscard;
1411 #endif
1412
1413 /* GL_NV_primitive_restart */
1414 case GL_PRIMITIVE_RESTART_NV:
1415 if (!ctx->Extensions.NV_primitive_restart) {
1416 goto invalid_enum_error;
1417 }
1418 return ctx->Array.PrimitiveRestart;
1419
1420 /* GL 3.1 primitive restart */
1421 case GL_PRIMITIVE_RESTART:
1422 if (ctx->VersionMajor * 10 + ctx->VersionMinor < 31) {
1423 goto invalid_enum_error;
1424 }
1425 return ctx->Array.PrimitiveRestart;
1426
1427 /* GL3.0 - GL_framebuffer_sRGB */
1428 case GL_FRAMEBUFFER_SRGB_EXT:
1429 CHECK_EXTENSION(EXT_framebuffer_sRGB);
1430 return ctx->Color.sRGBEnabled;
1431
1432 /* GL_OES_EGL_image_external */
1433 case GL_TEXTURE_EXTERNAL_OES:
1434 CHECK_EXTENSION(OES_EGL_image_external);
1435 return is_texture_enabled(ctx, TEXTURE_EXTERNAL_BIT);
1436
1437 default:
1438 goto invalid_enum_error;
1439 }
1440
1441 return GL_FALSE;
1442
1443 invalid_enum_error:
1444 _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(%s)",
1445 _mesa_lookup_enum_by_nr(cap));
1446 return GL_FALSE;
1447 }