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