projects / mesa.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
Fix pow <small> and a very stypid bug with dummy srcs(0 equals to tmp0.x)</small...
[mesa.git] / src / mesa / shader / program.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.5
4 *
5 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 /**
26 * \file program.c
27 * Vertex and fragment program support functions.
28 * \author Brian Paul
29 */
30
31
32 #include "glheader.h"
33 #include "context.h"
34 #include "hash.h"
35 #include "imports.h"
36 #include "macros.h"
37 #include "mtypes.h"
38 #include "program.h"
39 #include "nvfragparse.h"
40 #include "program_instruction.h"
41 #include "nvvertparse.h"
42 #include "atifragshader.h"
43
44
45 static const char *
46 make_state_string(const GLint stateTokens[6]);
47
48 static GLuint
49 make_state_flags(const GLint state[]);
50
51
52 /**********************************************************************/
53 /* Utility functions */
54 /**********************************************************************/
55
56
57 /* A pointer to this dummy program is put into the hash table when
58 * glGenPrograms is called.
59 */
60 struct program _mesa_DummyProgram;
61
62
63 /**
64 * Init context's vertex/fragment program state
65 */
66 void
67 _mesa_init_program(GLcontext *ctx)
68 {
69 GLuint i;
70
71 ctx->Program.ErrorPos = -1;
72 ctx->Program.ErrorString = _mesa_strdup("");
73
74 #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
75 ctx->VertexProgram.Enabled = GL_FALSE;
76 ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
77 ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
78 ctx->VertexProgram.Current = (struct vertex_program *) ctx->Shared->DefaultVertexProgram;
79 assert(ctx->VertexProgram.Current);
80 ctx->VertexProgram.Current->Base.RefCount++;
81 for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
82 ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
83 ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
84 }
85 #endif
86
87 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
88 ctx->FragmentProgram.Enabled = GL_FALSE;
89 ctx->FragmentProgram.Current = (struct fragment_program *) ctx->Shared->DefaultFragmentProgram;
90 assert(ctx->FragmentProgram.Current);
91 ctx->FragmentProgram.Current->Base.RefCount++;
92 #endif
93
94 /* XXX probably move this stuff */
95 #if FEATURE_ATI_fragment_shader
96 ctx->ATIFragmentShader.Enabled = GL_FALSE;
97 ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
98 assert(ctx->ATIFragmentShader.Current);
99 ctx->ATIFragmentShader.Current->RefCount++;
100 #endif
101 }
102
103
104 /**
105 * Free a context's vertex/fragment program state
106 */
107 void
108 _mesa_free_program_data(GLcontext *ctx)
109 {
110 #if FEATURE_NV_vertex_program
111 if (ctx->VertexProgram.Current) {
112 ctx->VertexProgram.Current->Base.RefCount--;
113 if (ctx->VertexProgram.Current->Base.RefCount <= 0)
114 ctx->Driver.DeleteProgram(ctx, &(ctx->VertexProgram.Current->Base));
115 }
116 #endif
117 #if FEATURE_NV_fragment_program
118 if (ctx->FragmentProgram.Current) {
119 ctx->FragmentProgram.Current->Base.RefCount--;
120 if (ctx->FragmentProgram.Current->Base.RefCount <= 0)
121 ctx->Driver.DeleteProgram(ctx, &(ctx->FragmentProgram.Current->Base));
122 }
123 #endif
124 /* XXX probably move this stuff */
125 #if FEATURE_ATI_fragment_shader
126 if (ctx->ATIFragmentShader.Current) {
127 ctx->ATIFragmentShader.Current->RefCount--;
128 if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
129 _mesa_free(ctx->ATIFragmentShader.Current);
130 }
131 }
132 #endif
133 _mesa_free((void *) ctx->Program.ErrorString);
134 }
135
136
137
138
139 /**
140 * Set the vertex/fragment program error state (position and error string).
141 * This is generally called from within the parsers.
142 */
143 void
144 _mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string)
145 {
146 ctx->Program.ErrorPos = pos;
147 _mesa_free((void *) ctx->Program.ErrorString);
148 if (!string)
149 string = "";
150 ctx->Program.ErrorString = _mesa_strdup(string);
151 }
152
153
154 /**
155 * Find the line number and column for 'pos' within 'string'.
156 * Return a copy of the line which contains 'pos'. Free the line with
157 * _mesa_free().
158 * \param string the program string
159 * \param pos the position within the string
160 * \param line returns the line number corresponding to 'pos'.
161 * \param col returns the column number corresponding to 'pos'.
162 * \return copy of the line containing 'pos'.
163 */
164 const GLubyte *
165 _mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
166 GLint *line, GLint *col)
167 {
168 const GLubyte *lineStart = string;
169 const GLubyte *p = string;
170 GLubyte *s;
171 int len;
172
173 *line = 1;
174
175 while (p != pos) {
176 if (*p == (GLubyte) '\n') {
177 (*line)++;
178 lineStart = p + 1;
179 }
180 p++;
181 }
182
183 *col = (pos - lineStart) + 1;
184
185 /* return copy of this line */
186 while (*p != 0 && *p != '\n')
187 p++;
188 len = p - lineStart;
189 s = (GLubyte *) _mesa_malloc(len + 1);
190 _mesa_memcpy(s, lineStart, len);
191 s[len] = 0;
192
193 return s;
194 }
195
196
197 /**
198 * Initialize a new vertex/fragment program object.
199 */
200 static struct program *
201 _mesa_init_program_struct( GLcontext *ctx, struct program *prog,
202 GLenum target, GLuint id)
203 {
204 (void) ctx;
205 if (prog) {
206 prog->Id = id;
207 prog->Target = target;
208 prog->Resident = GL_TRUE;
209 prog->RefCount = 1;
210 }
211
212 return prog;
213 }
214
215
216 /**
217 * Initialize a new fragment program object.
218 */
219 struct program *
220 _mesa_init_fragment_program( GLcontext *ctx, struct fragment_program *prog,
221 GLenum target, GLuint id)
222 {
223 if (prog)
224 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
225 else
226 return NULL;
227 }
228
229
230 /**
231 * Initialize a new vertex program object.
232 */
233 struct program *
234 _mesa_init_vertex_program( GLcontext *ctx, struct vertex_program *prog,
235 GLenum target, GLuint id)
236 {
237 if (prog)
238 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
239 else
240 return NULL;
241 }
242
243
244 /**
245 * Allocate and initialize a new fragment/vertex program object but
246 * don't put it into the program hash table. Called via
247 * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
248 * device driver function to implement OO deriviation with additional
249 * types not understood by this function.
250 *
251 * \param ctx context
252 * \param id program id/number
253 * \param target program target/type
254 * \return pointer to new program object
255 */
256 struct program *
257 _mesa_new_program(GLcontext *ctx, GLenum target, GLuint id)
258 {
259 switch (target) {
260 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
261 return _mesa_init_vertex_program( ctx, CALLOC_STRUCT(vertex_program),
262 target, id );
263 case GL_FRAGMENT_PROGRAM_NV:
264 case GL_FRAGMENT_PROGRAM_ARB:
265 return _mesa_init_fragment_program( ctx, CALLOC_STRUCT(fragment_program),
266 target, id );
267 default:
268 _mesa_problem(ctx, "bad target in _mesa_new_program");
269 return NULL;
270 }
271 }
272
273
274 /**
275 * Delete a program and remove it from the hash table, ignoring the
276 * reference count.
277 * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
278 * by a device driver function.
279 */
280 void
281 _mesa_delete_program(GLcontext *ctx, struct program *prog)
282 {
283 (void) ctx;
284 ASSERT(prog);
285
286 if (prog->String)
287 _mesa_free(prog->String);
288
289 if (prog->Instructions) {
290 GLuint i;
291 for (i = 0; i < prog->NumInstructions; i++) {
292 if (prog->Instructions[i].Data)
293 _mesa_free(prog->Instructions[i].Data);
294 }
295 _mesa_free(prog->Instructions);
296 }
297
298 if (prog->Parameters)
299 _mesa_free_parameter_list(prog->Parameters);
300
301 _mesa_free(prog);
302 }
303
304
305
306 /**********************************************************************/
307 /* Program parameter functions */
308 /**********************************************************************/
309
310 struct program_parameter_list *
311 _mesa_new_parameter_list(void)
312 {
313 return (struct program_parameter_list *)
314 _mesa_calloc(sizeof(struct program_parameter_list));
315 }
316
317
318 /**
319 * Free a parameter list and all its parameters
320 */
321 void
322 _mesa_free_parameter_list(struct program_parameter_list *paramList)
323 {
324 _mesa_free_parameters(paramList);
325 _mesa_free(paramList->Parameters);
326 if (paramList->ParameterValues)
327 ALIGN_FREE(paramList->ParameterValues);
328 _mesa_free(paramList);
329 }
330
331
332 /**
333 * Free all the parameters in the given list, but don't free the
334 * paramList structure itself.
335 */
336 void
337 _mesa_free_parameters(struct program_parameter_list *paramList)
338 {
339 GLuint i;
340 for (i = 0; i < paramList->NumParameters; i++) {
341 if (paramList->Parameters[i].Name)
342 _mesa_free((void *) paramList->Parameters[i].Name);
343 }
344 paramList->NumParameters = 0;
345 }
346
347
348 /**
349 * Helper function used by the functions below.
350 * \return index of new parameter in the list, or -1 if error (out of mem)
351 */
352 static GLint
353 add_parameter(struct program_parameter_list *paramList,
354 const char *name, const GLfloat values[4],
355 enum register_file type)
356 {
357 const GLuint n = paramList->NumParameters;
358
359 if (n == paramList->Size) {
360 GLfloat (*tmp)[4];
361
362 paramList->Size *= 2;
363 if (!paramList->Size)
364 paramList->Size = 8;
365
366 paramList->Parameters = (struct program_parameter *)
367 _mesa_realloc(paramList->Parameters,
368 n * sizeof(struct program_parameter),
369 paramList->Size * sizeof(struct program_parameter));
370
371 tmp = paramList->ParameterValues;
372 paramList->ParameterValues = (GLfloat(*)[4]) ALIGN_MALLOC(paramList->Size * 4 * sizeof(GLfloat), 16);
373 if (tmp) {
374 _mesa_memcpy(paramList->ParameterValues, tmp,
375 n * 4 * sizeof(GLfloat));
376 ALIGN_FREE(tmp);
377 }
378 }
379
380 if (!paramList->Parameters ||
381 !paramList->ParameterValues) {
382 /* out of memory */
383 paramList->NumParameters = 0;
384 paramList->Size = 0;
385 return -1;
386 }
387 else {
388 paramList->NumParameters = n + 1;
389
390 _mesa_memset(&paramList->Parameters[n], 0,
391 sizeof(struct program_parameter));
392
393 paramList->Parameters[n].Name = name ? _mesa_strdup(name) : NULL;
394 paramList->Parameters[n].Type = type;
395 if (values)
396 COPY_4V(paramList->ParameterValues[n], values);
397 return (GLint) n;
398 }
399 }
400
401
402 /**
403 * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
404 * \return index of the new entry in the parameter list
405 */
406 GLint
407 _mesa_add_named_parameter(struct program_parameter_list *paramList,
408 const char *name, const GLfloat values[4])
409 {
410 return add_parameter(paramList, name, values, PROGRAM_NAMED_PARAM);
411 }
412
413
414 /**
415 * Add a new unnamed constant to the parameter list.
416 * \param paramList - the parameter list
417 * \param values - four float values
418 * \return index of the new parameter.
419 */
420 GLint
421 _mesa_add_named_constant(struct program_parameter_list *paramList,
422 const char *name, const GLfloat values[4])
423 {
424 return add_parameter(paramList, name, values, PROGRAM_CONSTANT);
425 }
426
427
428 /**
429 * Add a new unnamed constant to the parameter list.
430 * \param paramList - the parameter list
431 * \param values - four float values
432 * \return index of the new parameter.
433 */
434 GLint
435 _mesa_add_unnamed_constant(struct program_parameter_list *paramList,
436 const GLfloat values[4])
437 {
438 return add_parameter(paramList, NULL, values, PROGRAM_CONSTANT);
439 }
440
441
442 /**
443 * Add a new state reference to the parameter list.
444 * \param paramList - the parameter list
445 * \param state - an array of 6 state tokens
446 *
447 * \return index of the new parameter.
448 */
449 GLint
450 _mesa_add_state_reference(struct program_parameter_list *paramList,
451 const GLint *stateTokens)
452 {
453 /* XXX we should probably search the current parameter list to see if
454 * the new state reference is already present.
455 */
456 GLint index;
457 const char *name = make_state_string(stateTokens);
458
459 index = add_parameter(paramList, name, NULL, PROGRAM_STATE_VAR);
460 if (index >= 0) {
461 GLuint i;
462 for (i = 0; i < 6; i++)
463 paramList->Parameters[index].StateIndexes[i]
464 = (enum state_index) stateTokens[i];
465
466 paramList->StateFlags |=
467 make_state_flags(stateTokens);
468 }
469
470 return index;
471 }
472
473
474 /**
475 * Lookup a parameter value by name in the given parameter list.
476 * \return pointer to the float[4] values.
477 */
478 GLfloat *
479 _mesa_lookup_parameter_value(struct program_parameter_list *paramList,
480 GLsizei nameLen, const char *name)
481 {
482 GLuint i;
483
484 if (!paramList)
485 return NULL;
486
487 if (nameLen == -1) {
488 /* name is null-terminated */
489 for (i = 0; i < paramList->NumParameters; i++) {
490 if (paramList->Parameters[i].Name &&
491 _mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
492 return paramList->ParameterValues[i];
493 }
494 }
495 else {
496 /* name is not null-terminated, use nameLen */
497 for (i = 0; i < paramList->NumParameters; i++) {
498 if (paramList->Parameters[i].Name &&
499 _mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
500 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
501 return paramList->ParameterValues[i];
502 }
503 }
504 return NULL;
505 }
506
507
508 /**
509 * Lookup a parameter index by name in the given parameter list.
510 * \return index of parameter in the list.
511 */
512 GLint
513 _mesa_lookup_parameter_index(struct program_parameter_list *paramList,
514 GLsizei nameLen, const char *name)
515 {
516 GLint i;
517
518 if (!paramList)
519 return -1;
520
521 if (nameLen == -1) {
522 /* name is null-terminated */
523 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
524 if (paramList->Parameters[i].Name &&
525 _mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
526 return i;
527 }
528 }
529 else {
530 /* name is not null-terminated, use nameLen */
531 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
532 if (paramList->Parameters[i].Name &&
533 _mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
534 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
535 return i;
536 }
537 }
538 return -1;
539 }
540
541
542 /**
543 * Use the list of tokens in the state[] array to find global GL state
544 * and return it in <value>. Usually, four values are returned in <value>
545 * but matrix queries may return as many as 16 values.
546 * This function is used for ARB vertex/fragment programs.
547 * The program parser will produce the state[] values.
548 */
549 static void
550 _mesa_fetch_state(GLcontext *ctx, const enum state_index state[],
551 GLfloat *value)
552 {
553 switch (state[0]) {
554 case STATE_MATERIAL:
555 {
556 /* state[1] is either 0=front or 1=back side */
557 const GLuint face = (GLuint) state[1];
558 /* state[2] is the material attribute */
559 switch (state[2]) {
560 case STATE_AMBIENT:
561 if (face == 0)
562 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT]);
563 else
564 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT]);
565 return;
566 case STATE_DIFFUSE:
567 if (face == 0)
568 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE]);
569 else
570 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE]);
571 return;
572 case STATE_SPECULAR:
573 if (face == 0)
574 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR]);
575 else
576 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SPECULAR]);
577 return;
578 case STATE_EMISSION:
579 if (face == 0)
580 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION]);
581 else
582 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION]);
583 return;
584 case STATE_SHININESS:
585 if (face == 0)
586 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
587 else
588 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
589 value[1] = 0.0F;
590 value[2] = 0.0F;
591 value[3] = 1.0F;
592 return;
593 default:
594 _mesa_problem(ctx, "Invalid material state in fetch_state");
595 return;
596 }
597 }
598 case STATE_LIGHT:
599 {
600 /* state[1] is the light number */
601 const GLuint ln = (GLuint) state[1];
602 /* state[2] is the light attribute */
603 switch (state[2]) {
604 case STATE_AMBIENT:
605 COPY_4V(value, ctx->Light.Light[ln].Ambient);
606 return;
607 case STATE_DIFFUSE:
608 COPY_4V(value, ctx->Light.Light[ln].Diffuse);
609 return;
610 case STATE_SPECULAR:
611 COPY_4V(value, ctx->Light.Light[ln].Specular);
612 return;
613 case STATE_POSITION:
614 COPY_4V(value, ctx->Light.Light[ln].EyePosition);
615 return;
616 case STATE_ATTENUATION:
617 value[0] = ctx->Light.Light[ln].ConstantAttenuation;
618 value[1] = ctx->Light.Light[ln].LinearAttenuation;
619 value[2] = ctx->Light.Light[ln].QuadraticAttenuation;
620 value[3] = ctx->Light.Light[ln].SpotExponent;
621 return;
622 case STATE_SPOT_DIRECTION:
623 COPY_3V(value, ctx->Light.Light[ln].EyeDirection);
624 value[3] = ctx->Light.Light[ln]._CosCutoff;
625 return;
626 case STATE_HALF:
627 {
628 GLfloat eye_z[] = {0, 0, 1};
629
630 /* Compute infinite half angle vector:
631 * half-vector = light_position + (0, 0, 1)
632 * and then normalize. w = 0
633 *
634 * light.EyePosition.w should be 0 for infinite lights.
635 */
636 ADD_3V(value, eye_z, ctx->Light.Light[ln].EyePosition);
637 NORMALIZE_3FV(value);
638 value[3] = 0;
639 }
640 return;
641 case STATE_POSITION_NORMALIZED:
642 COPY_4V(value, ctx->Light.Light[ln].EyePosition);
643 NORMALIZE_3FV( value );
644 return;
645 default:
646 _mesa_problem(ctx, "Invalid light state in fetch_state");
647 return;
648 }
649 }
650 case STATE_LIGHTMODEL_AMBIENT:
651 COPY_4V(value, ctx->Light.Model.Ambient);
652 return;
653 case STATE_LIGHTMODEL_SCENECOLOR:
654 if (state[1] == 0) {
655 /* front */
656 GLint i;
657 for (i = 0; i < 3; i++) {
658 value[i] = ctx->Light.Model.Ambient[i]
659 * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i]
660 + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i];
661 }
662 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
663 }
664 else {
665 /* back */
666 GLint i;
667 for (i = 0; i < 3; i++) {
668 value[i] = ctx->Light.Model.Ambient[i]
669 * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i]
670 + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i];
671 }
672 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
673 }
674 return;
675 case STATE_LIGHTPROD:
676 {
677 const GLuint ln = (GLuint) state[1];
678 const GLuint face = (GLuint) state[2];
679 GLint i;
680 ASSERT(face == 0 || face == 1);
681 switch (state[3]) {
682 case STATE_AMBIENT:
683 for (i = 0; i < 3; i++) {
684 value[i] = ctx->Light.Light[ln].Ambient[i] *
685 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i];
686 }
687 /* [3] = material alpha */
688 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
689 return;
690 case STATE_DIFFUSE:
691 for (i = 0; i < 3; i++) {
692 value[i] = ctx->Light.Light[ln].Diffuse[i] *
693 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i];
694 }
695 /* [3] = material alpha */
696 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
697 return;
698 case STATE_SPECULAR:
699 for (i = 0; i < 3; i++) {
700 value[i] = ctx->Light.Light[ln].Specular[i] *
701 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
702 }
703 /* [3] = material alpha */
704 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
705 return;
706 default:
707 _mesa_problem(ctx, "Invalid lightprod state in fetch_state");
708 return;
709 }
710 }
711 case STATE_TEXGEN:
712 {
713 /* state[1] is the texture unit */
714 const GLuint unit = (GLuint) state[1];
715 /* state[2] is the texgen attribute */
716 switch (state[2]) {
717 case STATE_TEXGEN_EYE_S:
718 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneS);
719 return;
720 case STATE_TEXGEN_EYE_T:
721 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneT);
722 return;
723 case STATE_TEXGEN_EYE_R:
724 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneR);
725 return;
726 case STATE_TEXGEN_EYE_Q:
727 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneQ);
728 return;
729 case STATE_TEXGEN_OBJECT_S:
730 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneS);
731 return;
732 case STATE_TEXGEN_OBJECT_T:
733 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneT);
734 return;
735 case STATE_TEXGEN_OBJECT_R:
736 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneR);
737 return;
738 case STATE_TEXGEN_OBJECT_Q:
739 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneQ);
740 return;
741 default:
742 _mesa_problem(ctx, "Invalid texgen state in fetch_state");
743 return;
744 }
745 }
746 case STATE_TEXENV_COLOR:
747 {
748 /* state[1] is the texture unit */
749 const GLuint unit = (GLuint) state[1];
750 COPY_4V(value, ctx->Texture.Unit[unit].EnvColor);
751 }
752 return;
753 case STATE_FOG_COLOR:
754 COPY_4V(value, ctx->Fog.Color);
755 return;
756 case STATE_FOG_PARAMS:
757 value[0] = ctx->Fog.Density;
758 value[1] = ctx->Fog.Start;
759 value[2] = ctx->Fog.End;
760 value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
761 return;
762 case STATE_CLIPPLANE:
763 {
764 const GLuint plane = (GLuint) state[1];
765 COPY_4V(value, ctx->Transform.EyeUserPlane[plane]);
766 }
767 return;
768 case STATE_POINT_SIZE:
769 value[0] = ctx->Point.Size;
770 value[1] = ctx->Point.MinSize;
771 value[2] = ctx->Point.MaxSize;
772 value[3] = ctx->Point.Threshold;
773 return;
774 case STATE_POINT_ATTENUATION:
775 value[0] = ctx->Point.Params[0];
776 value[1] = ctx->Point.Params[1];
777 value[2] = ctx->Point.Params[2];
778 value[3] = 1.0F;
779 return;
780 case STATE_MATRIX:
781 {
782 /* state[1] = modelview, projection, texture, etc. */
783 /* state[2] = which texture matrix or program matrix */
784 /* state[3] = first column to fetch */
785 /* state[4] = last column to fetch */
786 /* state[5] = transpose, inverse or invtrans */
787
788 const GLmatrix *matrix;
789 const enum state_index mat = state[1];
790 const GLuint index = (GLuint) state[2];
791 const GLuint first = (GLuint) state[3];
792 const GLuint last = (GLuint) state[4];
793 const enum state_index modifier = state[5];
794 const GLfloat *m;
795 GLuint row, i;
796 if (mat == STATE_MODELVIEW) {
797 matrix = ctx->ModelviewMatrixStack.Top;
798 }
799 else if (mat == STATE_PROJECTION) {
800 matrix = ctx->ProjectionMatrixStack.Top;
801 }
802 else if (mat == STATE_MVP) {
803 matrix = &ctx->_ModelProjectMatrix;
804 }
805 else if (mat == STATE_TEXTURE) {
806 matrix = ctx->TextureMatrixStack[index].Top;
807 }
808 else if (mat == STATE_PROGRAM) {
809 matrix = ctx->ProgramMatrixStack[index].Top;
810 }
811 else {
812 _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()");
813 return;
814 }
815 if (modifier == STATE_MATRIX_INVERSE ||
816 modifier == STATE_MATRIX_INVTRANS) {
817 /* Be sure inverse is up to date:
818 */
819 _math_matrix_analyse( (GLmatrix*) matrix );
820 m = matrix->inv;
821 }
822 else {
823 m = matrix->m;
824 }
825 if (modifier == STATE_MATRIX_TRANSPOSE ||
826 modifier == STATE_MATRIX_INVTRANS) {
827 for (i = 0, row = first; row <= last; row++) {
828 value[i++] = m[row * 4 + 0];
829 value[i++] = m[row * 4 + 1];
830 value[i++] = m[row * 4 + 2];
831 value[i++] = m[row * 4 + 3];
832 }
833 }
834 else {
835 for (i = 0, row = first; row <= last; row++) {
836 value[i++] = m[row + 0];
837 value[i++] = m[row + 4];
838 value[i++] = m[row + 8];
839 value[i++] = m[row + 12];
840 }
841 }
842 }
843 return;
844 case STATE_DEPTH_RANGE:
845 value[0] = ctx->Viewport.Near; /* near */
846 value[1] = ctx->Viewport.Far; /* far */
847 value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */
848 value[3] = 0;
849 return;
850 case STATE_FRAGMENT_PROGRAM:
851 {
852 /* state[1] = {STATE_ENV, STATE_LOCAL} */
853 /* state[2] = parameter index */
854 const int idx = (int) state[2];
855 switch (state[1]) {
856 case STATE_ENV:
857 COPY_4V(value, ctx->FragmentProgram.Parameters[idx]);
858 break;
859 case STATE_LOCAL:
860 COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]);
861 break;
862 default:
863 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
864 return;
865 }
866 }
867 return;
868
869 case STATE_VERTEX_PROGRAM:
870 {
871 /* state[1] = {STATE_ENV, STATE_LOCAL} */
872 /* state[2] = parameter index */
873 const int idx = (int) state[2];
874 switch (state[1]) {
875 case STATE_ENV:
876 COPY_4V(value, ctx->VertexProgram.Parameters[idx]);
877 break;
878 case STATE_LOCAL:
879 COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]);
880 break;
881 default:
882 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
883 return;
884 }
885 }
886 return;
887
888 case STATE_INTERNAL:
889 {
890 switch (state[1]) {
891 case STATE_NORMAL_SCALE:
892 ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1);
893 break;
894 default:
895 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
896 return;
897 }
898 }
899 return;
900
901 default:
902 _mesa_problem(ctx, "Invalid state in _mesa_fetch_state");
903 return;
904 }
905 }
906
907
908 /* Return a bit mask of the Mesa state flags under which a parameter's
909 * value might change.
910 */
911 static GLuint make_state_flags(const GLint state[])
912 {
913 switch (state[0]) {
914 case STATE_MATERIAL:
915 case STATE_LIGHT:
916 case STATE_LIGHTMODEL_AMBIENT:
917 case STATE_LIGHTMODEL_SCENECOLOR:
918 case STATE_LIGHTPROD:
919 return _NEW_LIGHT;
920
921 case STATE_TEXGEN:
922 case STATE_TEXENV_COLOR:
923 return _NEW_TEXTURE;
924
925 case STATE_FOG_COLOR:
926 case STATE_FOG_PARAMS:
927 return _NEW_FOG;
928
929 case STATE_CLIPPLANE:
930 return _NEW_TRANSFORM;
931
932 case STATE_POINT_SIZE:
933 case STATE_POINT_ATTENUATION:
934 return _NEW_POINT;
935
936 case STATE_MATRIX:
937 switch (state[1]) {
938 case STATE_MODELVIEW:
939 return _NEW_MODELVIEW;
940 case STATE_PROJECTION:
941 return _NEW_PROJECTION;
942 case STATE_MVP:
943 return _NEW_MODELVIEW | _NEW_PROJECTION;
944 case STATE_TEXTURE:
945 return _NEW_TEXTURE_MATRIX;
946 case STATE_PROGRAM:
947 return _NEW_TRACK_MATRIX;
948 default:
949 assert(0);
950 return 0;
951 }
952
953 case STATE_DEPTH_RANGE:
954 return _NEW_VIEWPORT;
955
956 case STATE_FRAGMENT_PROGRAM:
957 case STATE_VERTEX_PROGRAM:
958 return _NEW_PROGRAM;
959
960 case STATE_INTERNAL:
961 switch (state[1]) {
962 case STATE_NORMAL_SCALE:
963 return _NEW_MODELVIEW;
964 default:
965 assert(0);
966 return 0;
967 }
968
969 default:
970 assert(0);
971 return 0;
972 }
973 }
974
975
976
977
978
979 static void
980 append(char *dst, const char *src)
981 {
982 while (*dst)
983 dst++;
984 while (*src)
985 *dst++ = *src++;
986 *dst = 0;
987 }
988
989 static void
990 append_token(char *dst, enum state_index k)
991 {
992 switch (k) {
993 case STATE_MATERIAL:
994 append(dst, "material.");
995 break;
996 case STATE_LIGHT:
997 append(dst, "light");
998 break;
999 case STATE_LIGHTMODEL_AMBIENT:
1000 append(dst, "lightmodel.ambient");
1001 break;
1002 case STATE_LIGHTMODEL_SCENECOLOR:
1003 break;
1004 case STATE_LIGHTPROD:
1005 append(dst, "lightprod");
1006 break;
1007 case STATE_TEXGEN:
1008 append(dst, "texgen");
1009 break;
1010 case STATE_FOG_COLOR:
1011 append(dst, "fog.color");
1012 break;
1013 case STATE_FOG_PARAMS:
1014 append(dst, "fog.params");
1015 break;
1016 case STATE_CLIPPLANE:
1017 append(dst, "clip");
1018 break;
1019 case STATE_POINT_SIZE:
1020 append(dst, "point.size");
1021 break;
1022 case STATE_POINT_ATTENUATION:
1023 append(dst, "point.attenuation");
1024 break;
1025 case STATE_MATRIX:
1026 append(dst, "matrix.");
1027 break;
1028 case STATE_MODELVIEW:
1029 append(dst, "modelview");
1030 break;
1031 case STATE_PROJECTION:
1032 append(dst, "projection");
1033 break;
1034 case STATE_MVP:
1035 append(dst, "mvp");
1036 break;
1037 case STATE_TEXTURE:
1038 append(dst, "texture");
1039 break;
1040 case STATE_PROGRAM:
1041 append(dst, "program");
1042 break;
1043 case STATE_MATRIX_INVERSE:
1044 append(dst, ".inverse");
1045 break;
1046 case STATE_MATRIX_TRANSPOSE:
1047 append(dst, ".transpose");
1048 break;
1049 case STATE_MATRIX_INVTRANS:
1050 append(dst, ".invtrans");
1051 break;
1052 case STATE_AMBIENT:
1053 append(dst, "ambient");
1054 break;
1055 case STATE_DIFFUSE:
1056 append(dst, "diffuse");
1057 break;
1058 case STATE_SPECULAR:
1059 append(dst, "specular");
1060 break;
1061 case STATE_EMISSION:
1062 append(dst, "emission");
1063 break;
1064 case STATE_SHININESS:
1065 append(dst, "shininess");
1066 break;
1067 case STATE_HALF:
1068 append(dst, "half");
1069 break;
1070 case STATE_POSITION:
1071 append(dst, ".position");
1072 break;
1073 case STATE_ATTENUATION:
1074 append(dst, ".attenuation");
1075 break;
1076 case STATE_SPOT_DIRECTION:
1077 append(dst, ".spot.direction");
1078 break;
1079 case STATE_TEXGEN_EYE_S:
1080 append(dst, "eye.s");
1081 break;
1082 case STATE_TEXGEN_EYE_T:
1083 append(dst, "eye.t");
1084 break;
1085 case STATE_TEXGEN_EYE_R:
1086 append(dst, "eye.r");
1087 break;
1088 case STATE_TEXGEN_EYE_Q:
1089 append(dst, "eye.q");
1090 break;
1091 case STATE_TEXGEN_OBJECT_S:
1092 append(dst, "object.s");
1093 break;
1094 case STATE_TEXGEN_OBJECT_T:
1095 append(dst, "object.t");
1096 break;
1097 case STATE_TEXGEN_OBJECT_R:
1098 append(dst, "object.r");
1099 break;
1100 case STATE_TEXGEN_OBJECT_Q:
1101 append(dst, "object.q");
1102 break;
1103 case STATE_TEXENV_COLOR:
1104 append(dst, "texenv");
1105 break;
1106 case STATE_DEPTH_RANGE:
1107 append(dst, "depth.range");
1108 break;
1109 case STATE_VERTEX_PROGRAM:
1110 case STATE_FRAGMENT_PROGRAM:
1111 break;
1112 case STATE_ENV:
1113 append(dst, "env");
1114 break;
1115 case STATE_LOCAL:
1116 append(dst, "local");
1117 break;
1118 case STATE_INTERNAL:
1119 case STATE_NORMAL_SCALE:
1120 case STATE_POSITION_NORMALIZED:
1121 append(dst, "(internal)");
1122 break;
1123 default:
1124 ;
1125 }
1126 }
1127
1128 static void
1129 append_face(char *dst, GLint face)
1130 {
1131 if (face == 0)
1132 append(dst, "front.");
1133 else
1134 append(dst, "back.");
1135 }
1136
1137 static void
1138 append_index(char *dst, GLint index)
1139 {
1140 char s[20];
1141 _mesa_sprintf(s, "[%d].", index);
1142 append(dst, s);
1143 }
1144
1145 /**
1146 * Make a string from the given state vector.
1147 * For example, return "state.matrix.texture[2].inverse".
1148 */
1149 static const char *
1150 make_state_string(const GLint state[6])
1151 {
1152 char str[1000] = "";
1153 char tmp[30];
1154
1155 append(str, "state.");
1156 append_token(str, (enum state_index) state[0]);
1157
1158 switch (state[0]) {
1159 case STATE_MATERIAL:
1160 append_face(str, state[1]);
1161 append_token(str, (enum state_index) state[2]);
1162 break;
1163 case STATE_LIGHT:
1164 append(str, "light");
1165 append_index(str, state[1]); /* light number [i]. */
1166 append_token(str, (enum state_index) state[2]); /* coefficients */
1167 break;
1168 case STATE_LIGHTMODEL_AMBIENT:
1169 append(str, "lightmodel.ambient");
1170 break;
1171 case STATE_LIGHTMODEL_SCENECOLOR:
1172 if (state[1] == 0) {
1173 append(str, "lightmodel.front.scenecolor");
1174 }
1175 else {
1176 append(str, "lightmodel.back.scenecolor");
1177 }
1178 break;
1179 case STATE_LIGHTPROD:
1180 append_index(str, state[1]); /* light number [i]. */
1181 append_face(str, state[2]);
1182 append_token(str, (enum state_index) state[3]);
1183 break;
1184 case STATE_TEXGEN:
1185 append_index(str, state[1]); /* tex unit [i] */
1186 append_token(str, (enum state_index) state[2]); /* plane coef */
1187 break;
1188 case STATE_TEXENV_COLOR:
1189 append_index(str, state[1]); /* tex unit [i] */
1190 append(str, "color");
1191 break;
1192 case STATE_FOG_COLOR:
1193 case STATE_FOG_PARAMS:
1194 break;
1195 case STATE_CLIPPLANE:
1196 append_index(str, state[1]); /* plane [i] */
1197 append(str, "plane");
1198 break;
1199 case STATE_POINT_SIZE:
1200 case STATE_POINT_ATTENUATION:
1201 break;
1202 case STATE_MATRIX:
1203 {
1204 /* state[1] = modelview, projection, texture, etc. */
1205 /* state[2] = which texture matrix or program matrix */
1206 /* state[3] = first column to fetch */
1207 /* state[4] = last column to fetch */
1208 /* state[5] = transpose, inverse or invtrans */
1209 const enum state_index mat = (enum state_index) state[1];
1210 const GLuint index = (GLuint) state[2];
1211 const GLuint first = (GLuint) state[3];
1212 const GLuint last = (GLuint) state[4];
1213 const enum state_index modifier = (enum state_index) state[5];
1214 append_token(str, mat);
1215 if (index)
1216 append_index(str, index);
1217 if (modifier)
1218 append_token(str, modifier);
1219 if (first == last)
1220 _mesa_sprintf(tmp, ".row[%d]", first);
1221 else
1222 _mesa_sprintf(tmp, ".row[%d..%d]", first, last);
1223 append(str, tmp);
1224 }
1225 break;
1226 case STATE_DEPTH_RANGE:
1227 break;
1228 case STATE_FRAGMENT_PROGRAM:
1229 case STATE_VERTEX_PROGRAM:
1230 /* state[1] = {STATE_ENV, STATE_LOCAL} */
1231 /* state[2] = parameter index */
1232 append_token(str, (enum state_index) state[1]);
1233 append_index(str, state[2]);
1234 break;
1235 case STATE_INTERNAL:
1236 break;
1237 default:
1238 _mesa_problem(NULL, "Invalid state in maka_state_string");
1239 break;
1240 }
1241
1242 return _mesa_strdup(str);
1243 }
1244
1245
1246 /**
1247 * Loop over all the parameters in a parameter list. If the parameter
1248 * is a GL state reference, look up the current value of that state
1249 * variable and put it into the parameter's Value[4] array.
1250 * This would be called at glBegin time when using a fragment program.
1251 */
1252 void
1253 _mesa_load_state_parameters(GLcontext *ctx,
1254 struct program_parameter_list *paramList)
1255 {
1256 GLuint i;
1257
1258 if (!paramList)
1259 return;
1260
1261 for (i = 0; i < paramList->NumParameters; i++) {
1262 if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) {
1263 _mesa_fetch_state(ctx,
1264 paramList->Parameters[i].StateIndexes,
1265 paramList->ParameterValues[i]);
1266 }
1267 }
1268 }
1269
1270
1271 /**
1272 * Initialize program instruction fields to defaults.
1273 */
1274 void
1275 _mesa_init_instruction(struct prog_instruction *inst)
1276 {
1277 _mesa_bzero(inst, sizeof(struct prog_instruction));
1278
1279 inst->SrcReg[0].File = PROGRAM_UNDEFINED;
1280 inst->SrcReg[0].Swizzle = SWIZZLE_NOOP;
1281 inst->SrcReg[1].File = PROGRAM_UNDEFINED;
1282 inst->SrcReg[1].Swizzle = SWIZZLE_NOOP;
1283 inst->SrcReg[2].File = PROGRAM_UNDEFINED;
1284 inst->SrcReg[2].Swizzle = SWIZZLE_NOOP;
1285
1286 inst->DstReg.File = PROGRAM_UNDEFINED;
1287 inst->DstReg.WriteMask = WRITEMASK_XYZW;
1288 inst->DstReg.CondMask = COND_TR;
1289 inst->DstReg.CondSwizzle = SWIZZLE_NOOP;
1290
1291 inst->SaturateMode = SATURATE_OFF;
1292 inst->Precision = FLOAT32;
1293 }
1294
1295
1296 /**
1297 * Basic info about each instruction
1298 */
1299 struct instruction_info
1300 {
1301 enum prog_opcode Opcode;
1302 const char *Name;
1303 GLuint NumSrcRegs;
1304 };
1305
1306 /**
1307 * Instruction info
1308 * \note Opcode should equal array index!
1309 */
1310 static const struct instruction_info InstInfo[MAX_OPCODE] = {
1311 { OPCODE_ABS, "ABS", 1 },
1312 { OPCODE_ADD, "ADD", 2 },
1313 { OPCODE_ARA, "ARA", 1 },
1314 { OPCODE_ARL, "ARL", 1 },
1315 { OPCODE_ARL_NV, "ARL", 1 },
1316 { OPCODE_ARR, "ARL", 1 },
1317 { OPCODE_BRA, "BRA", 1 },
1318 { OPCODE_CAL, "CAL", 1 },
1319 { OPCODE_CMP, "CMP", 3 },
1320 { OPCODE_COS, "COS", 1 },
1321 { OPCODE_DDX, "DDX", 1 },
1322 { OPCODE_DDY, "DDY", 1 },
1323 { OPCODE_DP3, "DP3", 2 },
1324 { OPCODE_DP4, "DP4", 2 },
1325 { OPCODE_DPH, "DPH", 2 },
1326 { OPCODE_DST, "DST", 2 },
1327 { OPCODE_END, "END", 0 },
1328 { OPCODE_EX2, "EX2", 1 },
1329 { OPCODE_EXP, "EXP", 1 },
1330 { OPCODE_FLR, "FLR", 1 },
1331 { OPCODE_FRC, "FRC", 1 },
1332 { OPCODE_KIL, "KIL", 1 },
1333 { OPCODE_KIL_NV, "KIL", 0 },
1334 { OPCODE_LG2, "LG2", 1 },
1335 { OPCODE_LIT, "LIT", 1 },
1336 { OPCODE_LOG, "LOG", 1 },
1337 { OPCODE_LRP, "LRP", 3 },
1338 { OPCODE_MAD, "MAD", 3 },
1339 { OPCODE_MAX, "MAX", 2 },
1340 { OPCODE_MIN, "MIN", 2 },
1341 { OPCODE_MOV, "MOV", 1 },
1342 { OPCODE_MUL, "MUL", 2 },
1343 { OPCODE_PK2H, "PK2H", 1 },
1344 { OPCODE_PK2US, "PK2US", 1 },
1345 { OPCODE_PK4B, "PK4B", 1 },
1346 { OPCODE_PK4UB, "PK4UB", 1 },
1347 { OPCODE_POW, "POW", 2 },
1348 { OPCODE_POPA, "POPA", 0 },
1349 { OPCODE_PRINT, "PRINT", 1 },
1350 { OPCODE_PUSHA, "PUSHA", 0 },
1351 { OPCODE_RCC, "RCC", 1 },
1352 { OPCODE_RCP, "RCP", 1 },
1353 { OPCODE_RET, "RET", 1 },
1354 { OPCODE_RFL, "RFL", 1 },
1355 { OPCODE_RSQ, "RSQ", 1 },
1356 { OPCODE_SCS, "SCS", 1 },
1357 { OPCODE_SEQ, "SEQ", 2 },
1358 { OPCODE_SFL, "SFL", 0 },
1359 { OPCODE_SGE, "SGE", 2 },
1360 { OPCODE_SGT, "SGT", 2 },
1361 { OPCODE_SIN, "SIN", 1 },
1362 { OPCODE_SLE, "SLE", 2 },
1363 { OPCODE_SLT, "SLT", 2 },
1364 { OPCODE_SNE, "SNE", 2 },
1365 { OPCODE_SSG, "SSG", 1 },
1366 { OPCODE_STR, "STR", 0 },
1367 { OPCODE_SUB, "SUB", 2 },
1368 { OPCODE_SWZ, "SWZ", 1 },
1369 { OPCODE_TEX, "TEX", 1 },
1370 { OPCODE_TXB, "TXB", 1 },
1371 { OPCODE_TXD, "TXD", 3 },
1372 { OPCODE_TXL, "TXL", 1 },
1373 { OPCODE_TXP, "TXP", 1 },
1374 { OPCODE_TXP_NV, "TXP", 1 },
1375 { OPCODE_UP2H, "UP2H", 1 },
1376 { OPCODE_UP2US, "UP2US", 1 },
1377 { OPCODE_UP4B, "UP4B", 1 },
1378 { OPCODE_UP4UB, "UP4UB", 1 },
1379 { OPCODE_X2D, "X2D", 3 },
1380 { OPCODE_XPD, "XPD", 2 }
1381 };
1382
1383
1384 /**
1385 * Return the number of src registers for the given instruction/opcode.
1386 */
1387 GLuint
1388 _mesa_num_inst_src_regs(enum prog_opcode opcode)
1389 {
1390 GLuint i;
1391 #ifdef DEBUG
1392 for (i = 0; i < MAX_OPCODE; i++) {
1393 ASSERT(i == InstInfo[i].Opcode);
1394 }
1395 #endif
1396 for (i = 0; i < MAX_OPCODE; i++) {
1397 if (InstInfo[i].Opcode == opcode) {
1398 return InstInfo[i].NumSrcRegs;
1399 }
1400 }
1401 _mesa_problem(NULL, "invalid opcode in _mesa_num_inst_src_regs");
1402 return 0;
1403 }
1404
1405
1406 /**
1407 * Return string name for given program opcode.
1408 */
1409 const char *
1410 _mesa_opcode_string(enum prog_opcode opcode)
1411 {
1412 ASSERT(opcode < MAX_OPCODE);
1413 return InstInfo[opcode].Name;
1414 }
1415
1416 /**
1417 * Return string name for given program/register file.
1418 */
1419 static const char *
1420 program_file_string(enum register_file f)
1421 {
1422 switch (f) {
1423 case PROGRAM_TEMPORARY:
1424 return "TEMP";
1425 case PROGRAM_LOCAL_PARAM:
1426 return "LOCAL";
1427 case PROGRAM_ENV_PARAM:
1428 return "ENV";
1429 case PROGRAM_STATE_VAR:
1430 return "STATE";
1431 case PROGRAM_INPUT:
1432 return "INPUT";
1433 case PROGRAM_OUTPUT:
1434 return "OUTPUT";
1435 case PROGRAM_NAMED_PARAM:
1436 return "NAMED";
1437 case PROGRAM_CONSTANT:
1438 return "CONST";
1439 case PROGRAM_WRITE_ONLY:
1440 return "WRITE_ONLY";
1441 case PROGRAM_ADDRESS:
1442 return "ADDR";
1443 default:
1444 return "!unkown!";
1445 }
1446 }
1447
1448
1449 /**
1450 * Return a string representation of the given swizzle word.
1451 * If extended is true, use extended (comma-separated) format.
1452 */
1453 static const char *
1454 swizzle_string(GLuint swizzle, GLuint negateBase, GLboolean extended)
1455 {
1456 static const char swz[] = "xyzw01";
1457 static char s[20];
1458 GLuint i = 0;
1459
1460 if (!extended && swizzle == SWIZZLE_NOOP && negateBase == 0)
1461 return ""; /* no swizzle/negation */
1462
1463 if (!extended)
1464 s[i++] = '.';
1465
1466 if (negateBase & 0x1)
1467 s[i++] = '-';
1468 s[i++] = swz[GET_SWZ(swizzle, 0)];
1469
1470 if (extended) {
1471 s[i++] = ',';
1472 }
1473
1474 if (negateBase & 0x2)
1475 s[i++] = '-';
1476 s[i++] = swz[GET_SWZ(swizzle, 1)];
1477
1478 if (extended) {
1479 s[i++] = ',';
1480 }
1481
1482 if (negateBase & 0x4)
1483 s[i++] = '-';
1484 s[i++] = swz[GET_SWZ(swizzle, 2)];
1485
1486 if (extended) {
1487 s[i++] = ',';
1488 }
1489
1490 if (negateBase & 0x8)
1491 s[i++] = '-';
1492 s[i++] = swz[GET_SWZ(swizzle, 3)];
1493
1494 s[i] = 0;
1495 return s;
1496 }
1497
1498
1499 static const char *
1500 writemask_string(GLuint writeMask)
1501 {
1502 static char s[10];
1503 GLuint i = 0;
1504
1505 if (writeMask == WRITEMASK_XYZW)
1506 return "";
1507
1508 s[i++] = '.';
1509 if (writeMask & WRITEMASK_X)
1510 s[i++] = 'x';
1511 if (writeMask & WRITEMASK_Y)
1512 s[i++] = 'y';
1513 if (writeMask & WRITEMASK_Z)
1514 s[i++] = 'z';
1515 if (writeMask & WRITEMASK_W)
1516 s[i++] = 'w';
1517
1518 s[i] = 0;
1519 return s;
1520 }
1521
1522 static void
1523 print_dst_reg(const struct prog_dst_register *dstReg)
1524 {
1525 _mesa_printf(" %s[%d]%s",
1526 program_file_string((enum register_file) dstReg->File),
1527 dstReg->Index,
1528 writemask_string(dstReg->WriteMask));
1529 }
1530
1531 static void
1532 print_src_reg(const struct prog_src_register *srcReg)
1533 {
1534 _mesa_printf("%s[%d]%s",
1535 program_file_string((enum register_file) srcReg->File),
1536 srcReg->Index,
1537 swizzle_string(srcReg->Swizzle,
1538 srcReg->NegateBase, GL_FALSE));
1539 }
1540
1541
1542 /**
1543 * Print a single vertex/fragment program instruction.
1544 */
1545 void
1546 _mesa_print_instruction(const struct prog_instruction *inst)
1547 {
1548 switch (inst->Opcode) {
1549 case OPCODE_PRINT:
1550 _mesa_printf("PRINT '%s'", inst->Data);
1551 if (inst->SrcReg[0].File != PROGRAM_UNDEFINED) {
1552 _mesa_printf(", ");
1553 _mesa_printf("%s[%d]%s",
1554 program_file_string((enum register_file) inst->SrcReg[0].File),
1555 inst->SrcReg[0].Index,
1556 swizzle_string(inst->SrcReg[0].Swizzle,
1557 inst->SrcReg[0].NegateBase, GL_FALSE));
1558 }
1559 _mesa_printf(";\n");
1560 break;
1561 case OPCODE_SWZ:
1562 _mesa_printf("SWZ");
1563 if (inst->SaturateMode == SATURATE_ZERO_ONE)
1564 _mesa_printf("_SAT");
1565 print_dst_reg(&inst->DstReg);
1566 _mesa_printf("%s[%d], %s;\n",
1567 program_file_string((enum register_file) inst->SrcReg[0].File),
1568 inst->SrcReg[0].Index,
1569 swizzle_string(inst->SrcReg[0].Swizzle,
1570 inst->SrcReg[0].NegateBase, GL_TRUE));
1571 break;
1572 case OPCODE_TEX:
1573 case OPCODE_TXP:
1574 case OPCODE_TXB:
1575 _mesa_printf("%s", _mesa_opcode_string(inst->Opcode));
1576 if (inst->SaturateMode == SATURATE_ZERO_ONE)
1577 _mesa_printf("_SAT");
1578 _mesa_printf(" ");
1579 print_dst_reg(&inst->DstReg);
1580 _mesa_printf(", ");
1581 print_src_reg(&inst->SrcReg[0]);
1582 _mesa_printf(", texture[%d], ", inst->TexSrcUnit);
1583 switch (inst->TexSrcTarget) {
1584 case TEXTURE_1D_INDEX: _mesa_printf("1D"); break;
1585 case TEXTURE_2D_INDEX: _mesa_printf("2D"); break;
1586 case TEXTURE_3D_INDEX: _mesa_printf("3D"); break;
1587 case TEXTURE_CUBE_INDEX: _mesa_printf("CUBE"); break;
1588 case TEXTURE_RECT_INDEX: _mesa_printf("RECT"); break;
1589 default:
1590 ;
1591 }
1592 _mesa_printf("\n");
1593 break;
1594 case OPCODE_ARL:
1595 _mesa_printf("ARL addr.x, ");
1596 print_src_reg(&inst->SrcReg[0]);
1597 _mesa_printf(";\n");
1598 break;
1599 /* XXX may need for other special-case instructions */
1600 default:
1601 /* typical alu instruction */
1602 {
1603 const GLuint numRegs = _mesa_num_inst_src_regs(inst->Opcode);
1604 GLuint j;
1605
1606 _mesa_printf("%s", _mesa_opcode_string(inst->Opcode));
1607
1608 /* frag prog only */
1609 if (inst->SaturateMode == SATURATE_ZERO_ONE)
1610 _mesa_printf("_SAT");
1611
1612 if (inst->DstReg.File != PROGRAM_UNDEFINED) {
1613 _mesa_printf(" %s[%d]%s",
1614 program_file_string((enum register_file) inst->DstReg.File),
1615 inst->DstReg.Index,
1616 writemask_string(inst->DstReg.WriteMask));
1617 }
1618
1619 if (numRegs > 0)
1620 _mesa_printf(", ");
1621
1622 for (j = 0; j < numRegs; j++) {
1623 print_src_reg(inst->SrcReg + j);
1624 if (j + 1 < numRegs)
1625 _mesa_printf(", ");
1626 }
1627
1628 _mesa_printf(";\n");
1629 }
1630 }
1631 }
1632
1633
1634 /**
1635 * Print a vertx/fragment program to stdout.
1636 * XXX this function could be greatly improved.
1637 */
1638 void
1639 _mesa_print_program(const struct program *prog)
1640 {
1641 GLuint i;
1642 for (i = 0; i < prog->NumInstructions; i++) {
1643 _mesa_printf("%3d: ", i);
1644 _mesa_print_instruction(prog->Instructions + i);
1645 }
1646 }
1647
1648
1649 /**
1650 * Print all of a program's parameters.
1651 */
1652 void
1653 _mesa_print_program_parameters(GLcontext *ctx, const struct program *prog)
1654 {
1655 GLint i;
1656
1657 _mesa_printf("NumInstructions=%d\n", prog->NumInstructions);
1658 _mesa_printf("NumTemporaries=%d\n", prog->NumTemporaries);
1659 _mesa_printf("NumParameters=%d\n", prog->NumParameters);
1660 _mesa_printf("NumAttributes=%d\n", prog->NumAttributes);
1661 _mesa_printf("NumAddressRegs=%d\n", prog->NumAddressRegs);
1662
1663 _mesa_load_state_parameters(ctx, prog->Parameters);
1664
1665 #if 0
1666 _mesa_printf("Local Params:\n");
1667 for (i = 0; i < MAX_PROGRAM_LOCAL_PARAMS; i++){
1668 const GLfloat *p = prog->LocalParams[i];
1669 _mesa_printf("%2d: %f, %f, %f, %f\n", i, p[0], p[1], p[2], p[3]);
1670 }
1671 #endif
1672
1673 for (i = 0; i < prog->Parameters->NumParameters; i++){
1674 struct program_parameter *param = prog->Parameters->Parameters + i;
1675 const GLfloat *v = prog->Parameters->ParameterValues[i];
1676 _mesa_printf("param[%d] %s = {%.3f, %.3f, %.3f, %.3f};\n",
1677 i, param->Name, v[0], v[1], v[2], v[3]);
1678 }
1679 }
1680
1681
1682
1683 /**********************************************************************/
1684 /* API functions */
1685 /**********************************************************************/
1686
1687
1688 /**
1689 * Bind a program (make it current)
1690 * \note Called from the GL API dispatcher by both glBindProgramNV
1691 * and glBindProgramARB.
1692 */
1693 void GLAPIENTRY
1694 _mesa_BindProgram(GLenum target, GLuint id)
1695 {
1696 struct program *prog;
1697 GET_CURRENT_CONTEXT(ctx);
1698 ASSERT_OUTSIDE_BEGIN_END(ctx);
1699
1700 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
1701
1702 if ((target == GL_VERTEX_PROGRAM_NV
1703 && ctx->Extensions.NV_vertex_program) ||
1704 (target == GL_VERTEX_PROGRAM_ARB
1705 && ctx->Extensions.ARB_vertex_program)) {
1706 /*** Vertex program binding ***/
1707 struct vertex_program *curProg = ctx->VertexProgram.Current;
1708 if (curProg->Base.Id == id) {
1709 /* binding same program - no change */
1710 return;
1711 }
1712 if (curProg->Base.Id != 0) {
1713 /* decrement refcount on previously bound vertex program */
1714 curProg->Base.RefCount--;
1715 /* and delete if refcount goes below one */
1716 if (curProg->Base.RefCount <= 0) {
1717 /* the program ID was already removed from the hash table */
1718 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
1719 }
1720 }
1721 }
1722 else if ((target == GL_FRAGMENT_PROGRAM_NV
1723 && ctx->Extensions.NV_fragment_program) ||
1724 (target == GL_FRAGMENT_PROGRAM_ARB
1725 && ctx->Extensions.ARB_fragment_program)) {
1726 /*** Fragment program binding ***/
1727 struct fragment_program *curProg = ctx->FragmentProgram.Current;
1728 if (curProg->Base.Id == id) {
1729 /* binding same program - no change */
1730 return;
1731 }
1732 if (curProg->Base.Id != 0) {
1733 /* decrement refcount on previously bound fragment program */
1734 curProg->Base.RefCount--;
1735 /* and delete if refcount goes below one */
1736 if (curProg->Base.RefCount <= 0) {
1737 /* the program ID was already removed from the hash table */
1738 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
1739 }
1740 }
1741 }
1742 else {
1743 _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
1744 return;
1745 }
1746
1747 /* NOTE: binding to a non-existant program is not an error.
1748 * That's supposed to be caught in glBegin.
1749 */
1750 if (id == 0) {
1751 /* Bind default program */
1752 prog = NULL;
1753 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB)
1754 prog = ctx->Shared->DefaultVertexProgram;
1755 else
1756 prog = ctx->Shared->DefaultFragmentProgram;
1757 }
1758 else {
1759 /* Bind user program */
1760 prog = (struct program *) _mesa_HashLookup(ctx->Shared->Programs, id);
1761 if (!prog || prog == &_mesa_DummyProgram) {
1762 /* allocate a new program now */
1763 prog = ctx->Driver.NewProgram(ctx, target, id);
1764 if (!prog) {
1765 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
1766 return;
1767 }
1768 _mesa_HashInsert(ctx->Shared->Programs, id, prog);
1769 }
1770 else if (prog->Target != target) {
1771 _mesa_error(ctx, GL_INVALID_OPERATION,
1772 "glBindProgramNV/ARB(target mismatch)");
1773 return;
1774 }
1775 }
1776
1777 /* bind now */
1778 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB) {
1779 ctx->VertexProgram.Current = (struct vertex_program *) prog;
1780 }
1781 else if (target == GL_FRAGMENT_PROGRAM_NV || target == GL_FRAGMENT_PROGRAM_ARB) {
1782 ctx->FragmentProgram.Current = (struct fragment_program *) prog;
1783 }
1784
1785 /* Never null pointers */
1786 ASSERT(ctx->VertexProgram.Current);
1787 ASSERT(ctx->FragmentProgram.Current);
1788
1789 if (prog)
1790 prog->RefCount++;
1791
1792 if (ctx->Driver.BindProgram)
1793 ctx->Driver.BindProgram(ctx, target, prog);
1794 }
1795
1796
1797 /**
1798 * Delete a list of programs.
1799 * \note Not compiled into display lists.
1800 * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
1801 */
1802 void GLAPIENTRY
1803 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
1804 {
1805 GLint i;
1806 GET_CURRENT_CONTEXT(ctx);
1807 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1808
1809 if (n < 0) {
1810 _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
1811 return;
1812 }
1813
1814 for (i = 0; i < n; i++) {
1815 if (ids[i] != 0) {
1816 struct program *prog = (struct program *)
1817 _mesa_HashLookup(ctx->Shared->Programs, ids[i]);
1818 if (prog == &_mesa_DummyProgram) {
1819 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1820 }
1821 else if (prog) {
1822 /* Unbind program if necessary */
1823 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
1824 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
1825 if (ctx->VertexProgram.Current &&
1826 ctx->VertexProgram.Current->Base.Id == ids[i]) {
1827 /* unbind this currently bound program */
1828 _mesa_BindProgram(prog->Target, 0);
1829 }
1830 }
1831 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
1832 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
1833 if (ctx->FragmentProgram.Current &&
1834 ctx->FragmentProgram.Current->Base.Id == ids[i]) {
1835 /* unbind this currently bound program */
1836 _mesa_BindProgram(prog->Target, 0);
1837 }
1838 }
1839 else {
1840 _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
1841 return;
1842 }
1843 /* The ID is immediately available for re-use now */
1844 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1845 prog->RefCount--;
1846 if (prog->RefCount <= 0) {
1847 ctx->Driver.DeleteProgram(ctx, prog);
1848 }
1849 }
1850 }
1851 }
1852 }
1853
1854
1855 /**
1856 * Generate a list of new program identifiers.
1857 * \note Not compiled into display lists.
1858 * \note Called by both glGenProgramsNV and glGenProgramsARB.
1859 */
1860 void GLAPIENTRY
1861 _mesa_GenPrograms(GLsizei n, GLuint *ids)
1862 {
1863 GLuint first;
1864 GLuint i;
1865 GET_CURRENT_CONTEXT(ctx);
1866 ASSERT_OUTSIDE_BEGIN_END(ctx);
1867
1868 if (n < 0) {
1869 _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
1870 return;
1871 }
1872
1873 if (!ids)
1874 return;
1875
1876 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
1877
1878 /* Insert pointer to dummy program as placeholder */
1879 for (i = 0; i < (GLuint) n; i++) {
1880 _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
1881 }
1882
1883 /* Return the program names */
1884 for (i = 0; i < (GLuint) n; i++) {
1885 ids[i] = first + i;
1886 }
1887 }
1888
1889
1890 /**
1891 * Determine if id names a vertex or fragment program.
1892 * \note Not compiled into display lists.
1893 * \note Called from both glIsProgramNV and glIsProgramARB.
1894 * \param id is the program identifier
1895 * \return GL_TRUE if id is a program, else GL_FALSE.
1896 */
1897 GLboolean GLAPIENTRY
1898 _mesa_IsProgram(GLuint id)
1899 {
1900 GET_CURRENT_CONTEXT(ctx);
1901 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1902
1903 if (id == 0)
1904 return GL_FALSE;
1905
1906 if (_mesa_HashLookup(ctx->Shared->Programs, id))
1907 return GL_TRUE;
1908 else
1909 return GL_FALSE;
1910 }
1911
1912
1913
1914 /**********************************************************************/
1915 /* GL_MESA_program_debug extension */
1916 /**********************************************************************/
1917
1918
1919 /* XXX temporary */
1920 GLAPI void GLAPIENTRY
1921 glProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1922 GLvoid *data)
1923 {
1924 _mesa_ProgramCallbackMESA(target, callback, data);
1925 }
1926
1927
1928 void
1929 _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1930 GLvoid *data)
1931 {
1932 GET_CURRENT_CONTEXT(ctx);
1933
1934 switch (target) {
1935 case GL_FRAGMENT_PROGRAM_ARB:
1936 if (!ctx->Extensions.ARB_fragment_program) {
1937 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1938 return;
1939 }
1940 ctx->FragmentProgram.Callback = callback;
1941 ctx->FragmentProgram.CallbackData = data;
1942 break;
1943 case GL_FRAGMENT_PROGRAM_NV:
1944 if (!ctx->Extensions.NV_fragment_program) {
1945 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1946 return;
1947 }
1948 ctx->FragmentProgram.Callback = callback;
1949 ctx->FragmentProgram.CallbackData = data;
1950 break;
1951 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
1952 if (!ctx->Extensions.ARB_vertex_program &&
1953 !ctx->Extensions.NV_vertex_program) {
1954 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1955 return;
1956 }
1957 ctx->VertexProgram.Callback = callback;
1958 ctx->VertexProgram.CallbackData = data;
1959 break;
1960 default:
1961 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1962 return;
1963 }
1964 }
1965
1966
1967 /* XXX temporary */
1968 GLAPI void GLAPIENTRY
1969 glGetProgramRegisterfvMESA(GLenum target,
1970 GLsizei len, const GLubyte *registerName,
1971 GLfloat *v)
1972 {
1973 _mesa_GetProgramRegisterfvMESA(target, len, registerName, v);
1974 }
1975
1976
1977 void
1978 _mesa_GetProgramRegisterfvMESA(GLenum target,
1979 GLsizei len, const GLubyte *registerName,
1980 GLfloat *v)
1981 {
1982 char reg[1000];
1983 GET_CURRENT_CONTEXT(ctx);
1984
1985 /* We _should_ be inside glBegin/glEnd */
1986 #if 0
1987 if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) {
1988 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA");
1989 return;
1990 }
1991 #endif
1992
1993 /* make null-terminated copy of registerName */
1994 len = MIN2((unsigned int) len, sizeof(reg) - 1);
1995 _mesa_memcpy(reg, registerName, len);
1996 reg[len] = 0;
1997
1998 switch (target) {
1999 case GL_VERTEX_PROGRAM_NV:
2000 if (!ctx->Extensions.ARB_vertex_program &&
2001 !ctx->Extensions.NV_vertex_program) {
2002 _mesa_error(ctx, GL_INVALID_ENUM,
2003 "glGetProgramRegisterfvMESA(target)");
2004 return;
2005 }
2006 if (!ctx->VertexProgram._Enabled) {
2007 _mesa_error(ctx, GL_INVALID_OPERATION,
2008 "glGetProgramRegisterfvMESA");
2009 return;
2010 }
2011 /* GL_NV_vertex_program */
2012 if (reg[0] == 'R') {
2013 /* Temp register */
2014 GLint i = _mesa_atoi(reg + 1);
2015 if (i >= (GLint)ctx->Const.VertexProgram.MaxTemps) {
2016 _mesa_error(ctx, GL_INVALID_VALUE,
2017 "glGetProgramRegisterfvMESA(registerName)");
2018 return;
2019 }
2020 COPY_4V(v, ctx->VertexProgram.Temporaries[i]);
2021 }
2022 else if (reg[0] == 'v' && reg[1] == '[') {
2023 /* Vertex Input attribute */
2024 GLuint i;
2025 for (i = 0; i < ctx->Const.VertexProgram.MaxAttribs; i++) {
2026 const char *name = _mesa_nv_vertex_input_register_name(i);
2027 char number[10];
2028 _mesa_sprintf(number, "%d", i);
2029 if (_mesa_strncmp(reg + 2, name, 4) == 0 ||
2030 _mesa_strncmp(reg + 2, number, _mesa_strlen(number)) == 0) {
2031 COPY_4V(v, ctx->VertexProgram.Inputs[i]);
2032 return;
2033 }
2034 }
2035 _mesa_error(ctx, GL_INVALID_VALUE,
2036 "glGetProgramRegisterfvMESA(registerName)");
2037 return;
2038 }
2039 else if (reg[0] == 'o' && reg[1] == '[') {
2040 /* Vertex output attribute */
2041 }
2042 /* GL_ARB_vertex_program */
2043 else if (_mesa_strncmp(reg, "vertex.", 7) == 0) {
2044
2045 }
2046 else {
2047 _mesa_error(ctx, GL_INVALID_VALUE,
2048 "glGetProgramRegisterfvMESA(registerName)");
2049 return;
2050 }
2051 break;
2052 case GL_FRAGMENT_PROGRAM_ARB:
2053 if (!ctx->Extensions.ARB_fragment_program) {
2054 _mesa_error(ctx, GL_INVALID_ENUM,
2055 "glGetProgramRegisterfvMESA(target)");
2056 return;
2057 }
2058 if (!ctx->FragmentProgram._Enabled) {
2059 _mesa_error(ctx, GL_INVALID_OPERATION,
2060 "glGetProgramRegisterfvMESA");
2061 return;
2062 }
2063 /* XXX to do */
2064 break;
2065 case GL_FRAGMENT_PROGRAM_NV:
2066 if (!ctx->Extensions.NV_fragment_program) {
2067 _mesa_error(ctx, GL_INVALID_ENUM,
2068 "glGetProgramRegisterfvMESA(target)");
2069 return;
2070 }
2071 if (!ctx->FragmentProgram._Enabled) {
2072 _mesa_error(ctx, GL_INVALID_OPERATION,
2073 "glGetProgramRegisterfvMESA");
2074 return;
2075 }
2076 if (reg[0] == 'R') {
2077 /* Temp register */
2078 GLint i = _mesa_atoi(reg + 1);
2079 if (i >= (GLint)ctx->Const.FragmentProgram.MaxTemps) {
2080 _mesa_error(ctx, GL_INVALID_VALUE,
2081 "glGetProgramRegisterfvMESA(registerName)");
2082 return;
2083 }
2084 COPY_4V(v, ctx->FragmentProgram.Machine.Temporaries[i]);
2085 }
2086 else if (reg[0] == 'f' && reg[1] == '[') {
2087 /* Fragment input attribute */
2088 GLuint i;
2089 for (i = 0; i < ctx->Const.FragmentProgram.MaxAttribs; i++) {
2090 const char *name = _mesa_nv_fragment_input_register_name(i);
2091 if (_mesa_strncmp(reg + 2, name, 4) == 0) {
2092 COPY_4V(v, ctx->FragmentProgram.Machine.Inputs[i]);
2093 return;
2094 }
2095 }
2096 _mesa_error(ctx, GL_INVALID_VALUE,
2097 "glGetProgramRegisterfvMESA(registerName)");
2098 return;
2099 }
2100 else if (_mesa_strcmp(reg, "o[COLR]") == 0) {
2101 /* Fragment output color */
2102 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_COLR]);
2103 }
2104 else if (_mesa_strcmp(reg, "o[COLH]") == 0) {
2105 /* Fragment output color */
2106 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_COLH]);
2107 }
2108 else if (_mesa_strcmp(reg, "o[DEPR]") == 0) {
2109 /* Fragment output depth */
2110 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_DEPR]);
2111 }
2112 else {
2113 /* try user-defined identifiers */
2114 const GLfloat *value = _mesa_lookup_parameter_value(
2115 ctx->FragmentProgram.Current->Base.Parameters, -1, reg);
2116 if (value) {
2117 COPY_4V(v, value);
2118 }
2119 else {
2120 _mesa_error(ctx, GL_INVALID_VALUE,
2121 "glGetProgramRegisterfvMESA(registerName)");
2122 return;
2123 }
2124 }
2125 break;
2126 default:
2127 _mesa_error(ctx, GL_INVALID_ENUM,
2128 "glGetProgramRegisterfvMESA(target)");
2129 return;
2130 }
2131
2132 }