projects / mesa.git / blob
? search:


d46fadefcab3d00f46cb9a3393b2acb28eed3bb4
[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 /**********************************************************************/
46 /* Utility functions */
47 /**********************************************************************/
48
49
50 /* A pointer to this dummy program is put into the hash table when
51 * glGenPrograms is called.
52 */
53 struct program _mesa_DummyProgram;
54
55
56 /**
57 * Init context's vertex/fragment program state
58 */
59 void
60 _mesa_init_program(GLcontext *ctx)
61 {
62 GLuint i;
63
64 ctx->Program.ErrorPos = -1;
65 ctx->Program.ErrorString = _mesa_strdup("");
66
67 #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
68 ctx->VertexProgram.Enabled = GL_FALSE;
69 ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
70 ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
71 ctx->VertexProgram.Current = (struct vertex_program *) ctx->Shared->DefaultVertexProgram;
72 assert(ctx->VertexProgram.Current);
73 ctx->VertexProgram.Current->Base.RefCount++;
74 for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
75 ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
76 ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
77 }
78 #endif
79
80 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
81 ctx->FragmentProgram.Enabled = GL_FALSE;
82 ctx->FragmentProgram.Current = (struct fragment_program *) ctx->Shared->DefaultFragmentProgram;
83 assert(ctx->FragmentProgram.Current);
84 ctx->FragmentProgram.Current->Base.RefCount++;
85 #endif
86
87 #if FEATURE_ATI_fragment_shader
88 ctx->ATIFragmentShader.Enabled = GL_FALSE;
89 ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
90 assert(ctx->ATIFragmentShader.Current);
91 ctx->ATIFragmentShader.Current->Base.RefCount++;
92 #endif
93 }
94
95
96 /**
97 * Free a context's vertex/fragment program state
98 */
99 void
100 _mesa_free_program_data(GLcontext *ctx)
101 {
102 #if FEATURE_NV_vertex_program
103 if (ctx->VertexProgram.Current) {
104 ctx->VertexProgram.Current->Base.RefCount--;
105 if (ctx->VertexProgram.Current->Base.RefCount <= 0)
106 ctx->Driver.DeleteProgram(ctx, &(ctx->VertexProgram.Current->Base));
107 }
108 #endif
109 #if FEATURE_NV_fragment_program
110 if (ctx->FragmentProgram.Current) {
111 ctx->FragmentProgram.Current->Base.RefCount--;
112 if (ctx->FragmentProgram.Current->Base.RefCount <= 0)
113 ctx->Driver.DeleteProgram(ctx, &(ctx->FragmentProgram.Current->Base));
114 }
115 #endif
116 #if FEATURE_ATI_fragment_shader
117 if (ctx->ATIFragmentShader.Current) {
118 ctx->ATIFragmentShader.Current->Base.RefCount--;
119 if (ctx->ATIFragmentShader.Current->Base.RefCount <= 0)
120 ctx->Driver.DeleteProgram(ctx, &(ctx->ATIFragmentShader.Current->Base));
121 }
122 #endif
123 _mesa_free((void *) ctx->Program.ErrorString);
124 }
125
126
127
128
129 /**
130 * Set the vertex/fragment program error state (position and error string).
131 * This is generally called from within the parsers.
132 */
133 void
134 _mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string)
135 {
136 ctx->Program.ErrorPos = pos;
137 _mesa_free((void *) ctx->Program.ErrorString);
138 if (!string)
139 string = "";
140 ctx->Program.ErrorString = _mesa_strdup(string);
141 }
142
143
144 /**
145 * Find the line number and column for 'pos' within 'string'.
146 * Return a copy of the line which contains 'pos'. Free the line with
147 * _mesa_free().
148 * \param string the program string
149 * \param pos the position within the string
150 * \param line returns the line number corresponding to 'pos'.
151 * \param col returns the column number corresponding to 'pos'.
152 * \return copy of the line containing 'pos'.
153 */
154 const GLubyte *
155 _mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
156 GLint *line, GLint *col)
157 {
158 const GLubyte *lineStart = string;
159 const GLubyte *p = string;
160 GLubyte *s;
161 int len;
162
163 *line = 1;
164
165 while (p != pos) {
166 if (*p == (GLubyte) '\n') {
167 (*line)++;
168 lineStart = p + 1;
169 }
170 p++;
171 }
172
173 *col = (pos - lineStart) + 1;
174
175 /* return copy of this line */
176 while (*p != 0 && *p != '\n')
177 p++;
178 len = p - lineStart;
179 s = (GLubyte *) _mesa_malloc(len + 1);
180 _mesa_memcpy(s, lineStart, len);
181 s[len] = 0;
182
183 return s;
184 }
185
186
187 /**
188 * Initialize a new vertex/fragment program object.
189 */
190 static struct program *
191 _mesa_init_program_struct( GLcontext *ctx, struct program *prog,
192 GLenum target, GLuint id)
193 {
194 (void) ctx;
195 if (prog) {
196 prog->Id = id;
197 prog->Target = target;
198 prog->Resident = GL_TRUE;
199 prog->RefCount = 1;
200 }
201
202 return prog;
203 }
204
205
206 /**
207 * Initialize a new fragment program object.
208 */
209 struct program *
210 _mesa_init_fragment_program( GLcontext *ctx, struct fragment_program *prog,
211 GLenum target, GLuint id)
212 {
213 if (prog)
214 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
215 else
216 return NULL;
217 }
218
219
220 /**
221 * Initialize a new vertex program object.
222 */
223 struct program *
224 _mesa_init_vertex_program( GLcontext *ctx, struct vertex_program *prog,
225 GLenum target, GLuint id)
226 {
227 if (prog)
228 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
229 else
230 return NULL;
231 }
232
233 /**
234 * Initialize a new ATI fragment shader object.
235 */
236 struct program *
237 _mesa_init_ati_fragment_shader( GLcontext *ctx,
238 struct ati_fragment_shader *prog,
239 GLenum target, GLuint id )
240 {
241 if (prog)
242 return _mesa_init_program_struct( ctx, &prog->Base, target, id );
243 else
244 return NULL;
245 }
246
247
248
249 /**
250 * Allocate and initialize a new fragment/vertex program object but
251 * don't put it into the program hash table. Called via
252 * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
253 * device driver function to implement OO deriviation with additional
254 * types not understood by this function.
255 *
256 * \param ctx context
257 * \param id program id/number
258 * \param target program target/type
259 * \return pointer to new program object
260 */
261 struct program *
262 _mesa_new_program(GLcontext *ctx, GLenum target, GLuint id)
263 {
264 switch (target) {
265 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
266 return _mesa_init_vertex_program( ctx, CALLOC_STRUCT(vertex_program),
267 target, id );
268 case GL_FRAGMENT_PROGRAM_NV:
269 case GL_FRAGMENT_PROGRAM_ARB:
270 return _mesa_init_fragment_program( ctx, CALLOC_STRUCT(fragment_program),
271 target, id );
272 case GL_FRAGMENT_SHADER_ATI:
273 return _mesa_init_ati_fragment_shader( ctx, CALLOC_STRUCT(ati_fragment_shader),
274 target, id );
275
276 default:
277 _mesa_problem(ctx, "bad target in _mesa_new_program");
278 return NULL;
279 }
280 }
281
282
283 /**
284 * Delete a program and remove it from the hash table, ignoring the
285 * reference count.
286 * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
287 * by a device driver function.
288 */
289 void
290 _mesa_delete_program(GLcontext *ctx, struct program *prog)
291 {
292 (void) ctx;
293 ASSERT(prog);
294
295 if (prog->String)
296 _mesa_free(prog->String);
297 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
298 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
299 struct vertex_program *vprog = (struct vertex_program *) prog;
300 if (vprog->Instructions) {
301 GLuint i;
302 for (i = 0; i < vprog->Base.NumInstructions; i++) {
303 if (vprog->Instructions[i].Data)
304 _mesa_free(vprog->Instructions[i].Data);
305 }
306 _mesa_free(vprog->Instructions);
307 }
308 if (vprog->Parameters)
309 _mesa_free_parameter_list(vprog->Parameters);
310 }
311 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
312 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
313 struct fragment_program *fprog = (struct fragment_program *) prog;
314 if (fprog->Instructions) {
315 GLuint i;
316 for (i = 0; i < fprog->Base.NumInstructions; i++) {
317 if (fprog->Instructions[i].Data)
318 _mesa_free(fprog->Instructions[i].Data);
319 }
320 _mesa_free(fprog->Instructions);
321 }
322 if (fprog->Parameters)
323 _mesa_free_parameter_list(fprog->Parameters);
324 }
325 else if (prog->Target == GL_FRAGMENT_SHADER_ATI) {
326 struct ati_fragment_shader *atifs = (struct ati_fragment_shader *)prog;
327 GLuint i;
328 for (i = 0; i < MAX_NUM_PASSES_ATI; i++) {
329 if (atifs->Instructions[i])
330 _mesa_free(atifs->Instructions[i]);
331 if (atifs->SetupInst[i])
332 _mesa_free(atifs->SetupInst[i]);
333 }
334 }
335
336 _mesa_free(prog);
337 }
338
339
340
341 /**********************************************************************/
342 /* Program parameter functions */
343 /**********************************************************************/
344
345 struct program_parameter_list *
346 _mesa_new_parameter_list(void)
347 {
348 return (struct program_parameter_list *)
349 _mesa_calloc(sizeof(struct program_parameter_list));
350 }
351
352
353 /**
354 * Free a parameter list and all its parameters
355 */
356 void
357 _mesa_free_parameter_list(struct program_parameter_list *paramList)
358 {
359 _mesa_free_parameters(paramList);
360 _mesa_free(paramList->Parameters);
361 if (paramList->ParameterValues)
362 ALIGN_FREE(paramList->ParameterValues);
363 _mesa_free(paramList);
364 }
365
366
367 /**
368 * Free all the parameters in the given list, but don't free the
369 * paramList structure itself.
370 */
371 void
372 _mesa_free_parameters(struct program_parameter_list *paramList)
373 {
374 GLuint i;
375 for (i = 0; i < paramList->NumParameters; i++) {
376 if (paramList->Parameters[i].Name)
377 _mesa_free((void *) paramList->Parameters[i].Name);
378 }
379 paramList->NumParameters = 0;
380 }
381
382
383 /**
384 * Helper function used by the functions below.
385 * \return index of new parameter in the list, or -1 if error (out of mem)
386 */
387 static GLint
388 add_parameter(struct program_parameter_list *paramList,
389 const char *name, const GLfloat values[4],
390 enum register_file type)
391 {
392 const GLuint n = paramList->NumParameters;
393
394 if (n == paramList->Size) {
395 GLfloat (*tmp)[4];
396
397 paramList->Size *= 2;
398 if (!paramList->Size)
399 paramList->Size = 8;
400
401 paramList->Parameters = (struct program_parameter *)
402 _mesa_realloc(paramList->Parameters,
403 n * sizeof(struct program_parameter),
404 paramList->Size * sizeof(struct program_parameter));
405
406 tmp = paramList->ParameterValues;
407 paramList->ParameterValues = ALIGN_MALLOC(paramList->Size * 4 * sizeof(GLfloat), 16);
408 if (tmp) {
409 _mesa_memcpy(paramList->ParameterValues, tmp,
410 n * 4 * sizeof(GLfloat));
411 ALIGN_FREE(tmp);
412 }
413 }
414
415 if (!paramList->Parameters ||
416 !paramList->ParameterValues) {
417 /* out of memory */
418 paramList->NumParameters = 0;
419 paramList->Size = 0;
420 return -1;
421 }
422 else {
423 paramList->NumParameters = n + 1;
424
425 _mesa_memset(&paramList->Parameters[n], 0,
426 sizeof(struct program_parameter));
427
428 paramList->Parameters[n].Name = name ? _mesa_strdup(name) : NULL;
429 paramList->Parameters[n].Type = type;
430 if (values)
431 COPY_4V(paramList->ParameterValues[n], values);
432 return (GLint) n;
433 }
434 }
435
436
437 /**
438 * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
439 * \return index of the new entry in the parameter list
440 */
441 GLint
442 _mesa_add_named_parameter(struct program_parameter_list *paramList,
443 const char *name, const GLfloat values[4])
444 {
445 return add_parameter(paramList, name, values, PROGRAM_NAMED_PARAM);
446 }
447
448
449 /**
450 * Add a new unnamed constant to the parameter list.
451 * \param paramList - the parameter list
452 * \param values - four float values
453 * \return index of the new parameter.
454 */
455 GLint
456 _mesa_add_named_constant(struct program_parameter_list *paramList,
457 const char *name, const GLfloat values[4])
458 {
459 return add_parameter(paramList, name, values, PROGRAM_CONSTANT);
460 }
461
462
463 /**
464 * Add a new unnamed constant to the parameter list.
465 * \param paramList - the parameter list
466 * \param values - four float values
467 * \return index of the new parameter.
468 */
469 GLint
470 _mesa_add_unnamed_constant(struct program_parameter_list *paramList,
471 const GLfloat values[4])
472 {
473 return add_parameter(paramList, NULL, values, PROGRAM_CONSTANT);
474 }
475
476
477 /**
478 * Add a new state reference to the parameter list.
479 * \param paramList - the parameter list
480 * \param state - an array of 6 state tokens
481 *
482 * \return index of the new parameter.
483 */
484 GLint
485 _mesa_add_state_reference(struct program_parameter_list *paramList,
486 const GLint *stateTokens)
487 {
488 /* XXX we should probably search the current parameter list to see if
489 * the new state reference is already present.
490 */
491 GLint index;
492
493 index = add_parameter(paramList, NULL, NULL, PROGRAM_STATE_VAR);
494 if (index >= 0) {
495 GLuint i;
496 for (i = 0; i < 6; i++)
497 paramList->Parameters[index].StateIndexes[i]
498 = (enum state_index) stateTokens[i];
499 }
500
501 return index;
502 }
503
504
505 /**
506 * Lookup a parameter value by name in the given parameter list.
507 * \return pointer to the float[4] values.
508 */
509 GLfloat *
510 _mesa_lookup_parameter_value(struct program_parameter_list *paramList,
511 GLsizei nameLen, const char *name)
512 {
513 GLuint i;
514
515 if (!paramList)
516 return NULL;
517
518 if (nameLen == -1) {
519 /* name is null-terminated */
520 for (i = 0; i < paramList->NumParameters; i++) {
521 if (paramList->Parameters[i].Name &&
522 _mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
523 return paramList->ParameterValues[i];
524 }
525 }
526 else {
527 /* name is not null-terminated, use nameLen */
528 for (i = 0; i < paramList->NumParameters; i++) {
529 if (paramList->Parameters[i].Name &&
530 _mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
531 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
532 return paramList->ParameterValues[i];
533 }
534 }
535 return NULL;
536 }
537
538
539 /**
540 * Lookup a parameter index by name in the given parameter list.
541 * \return index of parameter in the list.
542 */
543 GLint
544 _mesa_lookup_parameter_index(struct program_parameter_list *paramList,
545 GLsizei nameLen, const char *name)
546 {
547 GLint i;
548
549 if (!paramList)
550 return -1;
551
552 if (nameLen == -1) {
553 /* name is null-terminated */
554 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
555 if (paramList->Parameters[i].Name &&
556 _mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
557 return i;
558 }
559 }
560 else {
561 /* name is not null-terminated, use nameLen */
562 for (i = 0; i < (GLint) paramList->NumParameters; i++) {
563 if (paramList->Parameters[i].Name &&
564 _mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
565 && _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
566 return i;
567 }
568 }
569 return -1;
570 }
571
572
573 /**
574 * Use the list of tokens in the state[] array to find global GL state
575 * and return it in <value>. Usually, four values are returned in <value>
576 * but matrix queries may return as many as 16 values.
577 * This function is used for ARB vertex/fragment programs.
578 * The program parser will produce the state[] values.
579 */
580 static void
581 _mesa_fetch_state(GLcontext *ctx, const enum state_index state[],
582 GLfloat *value)
583 {
584 switch (state[0]) {
585 case STATE_MATERIAL:
586 {
587 /* state[1] is either 0=front or 1=back side */
588 const GLuint face = (GLuint) state[1];
589 /* state[2] is the material attribute */
590 switch (state[2]) {
591 case STATE_AMBIENT:
592 if (face == 0)
593 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT]);
594 else
595 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT]);
596 return;
597 case STATE_DIFFUSE:
598 if (face == 0)
599 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE]);
600 else
601 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE]);
602 return;
603 case STATE_SPECULAR:
604 if (face == 0)
605 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR]);
606 else
607 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SPECULAR]);
608 return;
609 case STATE_EMISSION:
610 if (face == 0)
611 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION]);
612 else
613 COPY_4V(value, ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION]);
614 return;
615 case STATE_SHININESS:
616 if (face == 0)
617 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
618 else
619 value[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
620 value[1] = 0.0F;
621 value[2] = 0.0F;
622 value[3] = 1.0F;
623 return;
624 default:
625 _mesa_problem(ctx, "Invalid material state in fetch_state");
626 return;
627 }
628 }
629 case STATE_LIGHT:
630 {
631 /* state[1] is the light number */
632 const GLuint ln = (GLuint) state[1];
633 /* state[2] is the light attribute */
634 switch (state[2]) {
635 case STATE_AMBIENT:
636 COPY_4V(value, ctx->Light.Light[ln].Ambient);
637 return;
638 case STATE_DIFFUSE:
639 COPY_4V(value, ctx->Light.Light[ln].Diffuse);
640 return;
641 case STATE_SPECULAR:
642 COPY_4V(value, ctx->Light.Light[ln].Specular);
643 return;
644 case STATE_POSITION:
645 COPY_4V(value, ctx->Light.Light[ln].EyePosition);
646 return;
647 case STATE_ATTENUATION:
648 value[0] = ctx->Light.Light[ln].ConstantAttenuation;
649 value[1] = ctx->Light.Light[ln].LinearAttenuation;
650 value[2] = ctx->Light.Light[ln].QuadraticAttenuation;
651 value[3] = ctx->Light.Light[ln].SpotExponent;
652 return;
653 case STATE_SPOT_DIRECTION:
654 COPY_3V(value, ctx->Light.Light[ln].EyeDirection);
655 value[3] = ctx->Light.Light[ln]._CosCutoff;
656 return;
657 case STATE_HALF:
658 {
659 GLfloat eye_z[] = {0, 0, 1};
660
661 /* Compute infinite half angle vector:
662 * half-vector = light_position + (0, 0, 1)
663 * and then normalize. w = 0
664 *
665 * light.EyePosition.w should be 0 for infinite lights.
666 */
667 ADD_3V(value, eye_z, ctx->Light.Light[ln].EyePosition);
668 NORMALIZE_3FV(value);
669 value[3] = 0;
670 }
671 return;
672 case STATE_POSITION_NORMALIZED:
673 COPY_4V(value, ctx->Light.Light[ln].EyePosition);
674 NORMALIZE_3FV( value );
675 return;
676 default:
677 _mesa_problem(ctx, "Invalid light state in fetch_state");
678 return;
679 }
680 }
681 case STATE_LIGHTMODEL_AMBIENT:
682 COPY_4V(value, ctx->Light.Model.Ambient);
683 return;
684 case STATE_LIGHTMODEL_SCENECOLOR:
685 if (state[1] == 0) {
686 /* front */
687 GLint i;
688 for (i = 0; i < 3; i++) {
689 value[i] = ctx->Light.Model.Ambient[i]
690 * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i]
691 + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i];
692 }
693 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
694 }
695 else {
696 /* back */
697 GLint i;
698 for (i = 0; i < 3; i++) {
699 value[i] = ctx->Light.Model.Ambient[i]
700 * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i]
701 + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i];
702 }
703 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
704 }
705 return;
706 case STATE_LIGHTPROD:
707 {
708 const GLuint ln = (GLuint) state[1];
709 const GLuint face = (GLuint) state[2];
710 GLint i;
711 ASSERT(face == 0 || face == 1);
712 switch (state[3]) {
713 case STATE_AMBIENT:
714 for (i = 0; i < 3; i++) {
715 value[i] = ctx->Light.Light[ln].Ambient[i] *
716 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i];
717 }
718 /* [3] = material alpha */
719 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
720 return;
721 case STATE_DIFFUSE:
722 for (i = 0; i < 3; i++) {
723 value[i] = ctx->Light.Light[ln].Diffuse[i] *
724 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i];
725 }
726 /* [3] = material alpha */
727 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
728 return;
729 case STATE_SPECULAR:
730 for (i = 0; i < 3; i++) {
731 value[i] = ctx->Light.Light[ln].Specular[i] *
732 ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
733 }
734 /* [3] = material alpha */
735 value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
736 return;
737 default:
738 _mesa_problem(ctx, "Invalid lightprod state in fetch_state");
739 return;
740 }
741 }
742 case STATE_TEXGEN:
743 {
744 /* state[1] is the texture unit */
745 const GLuint unit = (GLuint) state[1];
746 /* state[2] is the texgen attribute */
747 switch (state[2]) {
748 case STATE_TEXGEN_EYE_S:
749 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneS);
750 return;
751 case STATE_TEXGEN_EYE_T:
752 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneT);
753 return;
754 case STATE_TEXGEN_EYE_R:
755 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneR);
756 return;
757 case STATE_TEXGEN_EYE_Q:
758 COPY_4V(value, ctx->Texture.Unit[unit].EyePlaneQ);
759 return;
760 case STATE_TEXGEN_OBJECT_S:
761 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneS);
762 return;
763 case STATE_TEXGEN_OBJECT_T:
764 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneT);
765 return;
766 case STATE_TEXGEN_OBJECT_R:
767 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneR);
768 return;
769 case STATE_TEXGEN_OBJECT_Q:
770 COPY_4V(value, ctx->Texture.Unit[unit].ObjectPlaneQ);
771 return;
772 default:
773 _mesa_problem(ctx, "Invalid texgen state in fetch_state");
774 return;
775 }
776 }
777 case STATE_TEXENV_COLOR:
778 {
779 /* state[1] is the texture unit */
780 const GLuint unit = (GLuint) state[1];
781 COPY_4V(value, ctx->Texture.Unit[unit].EnvColor);
782 }
783 return;
784 case STATE_FOG_COLOR:
785 COPY_4V(value, ctx->Fog.Color);
786 return;
787 case STATE_FOG_PARAMS:
788 value[0] = ctx->Fog.Density;
789 value[1] = ctx->Fog.Start;
790 value[2] = ctx->Fog.End;
791 value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
792 return;
793 case STATE_CLIPPLANE:
794 {
795 const GLuint plane = (GLuint) state[1];
796 COPY_4V(value, ctx->Transform.EyeUserPlane[plane]);
797 }
798 return;
799 case STATE_POINT_SIZE:
800 value[0] = ctx->Point.Size;
801 value[1] = ctx->Point.MinSize;
802 value[2] = ctx->Point.MaxSize;
803 value[3] = ctx->Point.Threshold;
804 return;
805 case STATE_POINT_ATTENUATION:
806 value[0] = ctx->Point.Params[0];
807 value[1] = ctx->Point.Params[1];
808 value[2] = ctx->Point.Params[2];
809 value[3] = 1.0F;
810 return;
811 case STATE_MATRIX:
812 {
813 /* state[1] = modelview, projection, texture, etc. */
814 /* state[2] = which texture matrix or program matrix */
815 /* state[3] = first column to fetch */
816 /* state[4] = last column to fetch */
817 /* state[5] = transpose, inverse or invtrans */
818
819 const GLmatrix *matrix;
820 const enum state_index mat = state[1];
821 const GLuint index = (GLuint) state[2];
822 const GLuint first = (GLuint) state[3];
823 const GLuint last = (GLuint) state[4];
824 const enum state_index modifier = state[5];
825 const GLfloat *m;
826 GLuint row, i;
827 if (mat == STATE_MODELVIEW) {
828 matrix = ctx->ModelviewMatrixStack.Top;
829 }
830 else if (mat == STATE_PROJECTION) {
831 matrix = ctx->ProjectionMatrixStack.Top;
832 }
833 else if (mat == STATE_MVP) {
834 matrix = &ctx->_ModelProjectMatrix;
835 }
836 else if (mat == STATE_TEXTURE) {
837 matrix = ctx->TextureMatrixStack[index].Top;
838 }
839 else if (mat == STATE_PROGRAM) {
840 matrix = ctx->ProgramMatrixStack[index].Top;
841 }
842 else {
843 _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()");
844 return;
845 }
846 if (modifier == STATE_MATRIX_INVERSE ||
847 modifier == STATE_MATRIX_INVTRANS) {
848 /* Be sure inverse is up to date:
849 */
850 _math_matrix_analyse( (GLmatrix*) matrix );
851 m = matrix->inv;
852 }
853 else {
854 m = matrix->m;
855 }
856 if (modifier == STATE_MATRIX_TRANSPOSE ||
857 modifier == STATE_MATRIX_INVTRANS) {
858 for (i = 0, row = first; row <= last; row++) {
859 value[i++] = m[row * 4 + 0];
860 value[i++] = m[row * 4 + 1];
861 value[i++] = m[row * 4 + 2];
862 value[i++] = m[row * 4 + 3];
863 }
864 }
865 else {
866 for (i = 0, row = first; row <= last; row++) {
867 value[i++] = m[row + 0];
868 value[i++] = m[row + 4];
869 value[i++] = m[row + 8];
870 value[i++] = m[row + 12];
871 }
872 }
873 }
874 return;
875 case STATE_DEPTH_RANGE:
876 value[0] = ctx->Viewport.Near; /* near */
877 value[1] = ctx->Viewport.Far; /* far */
878 value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */
879 value[3] = 0;
880 return;
881 case STATE_FRAGMENT_PROGRAM:
882 {
883 /* state[1] = {STATE_ENV, STATE_LOCAL} */
884 /* state[2] = parameter index */
885 const int idx = (int) state[2];
886 switch (state[1]) {
887 case STATE_ENV:
888 COPY_4V(value, ctx->FragmentProgram.Parameters[idx]);
889 break;
890 case STATE_LOCAL:
891 COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]);
892 break;
893 default:
894 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
895 return;
896 }
897 }
898 return;
899
900 case STATE_VERTEX_PROGRAM:
901 {
902 /* state[1] = {STATE_ENV, STATE_LOCAL} */
903 /* state[2] = parameter index */
904 const int idx = (int) state[2];
905 switch (state[1]) {
906 case STATE_ENV:
907 COPY_4V(value, ctx->VertexProgram.Parameters[idx]);
908 break;
909 case STATE_LOCAL:
910 COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]);
911 break;
912 default:
913 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
914 return;
915 }
916 }
917 return;
918
919 case STATE_INTERNAL:
920 {
921 switch (state[1]) {
922 case STATE_NORMAL_SCALE:
923 ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1);
924 break;
925 default:
926 _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
927 return;
928 }
929 }
930 return;
931
932 default:
933 _mesa_problem(ctx, "Invalid state in _mesa_fetch_state");
934 return;
935 }
936 }
937
938
939 /**
940 * Loop over all the parameters in a parameter list. If the parameter
941 * is a GL state reference, look up the current value of that state
942 * variable and put it into the parameter's Value[4] array.
943 * This would be called at glBegin time when using a fragment program.
944 */
945 void
946 _mesa_load_state_parameters(GLcontext *ctx,
947 struct program_parameter_list *paramList)
948 {
949 GLuint i;
950
951 if (!paramList)
952 return;
953
954 for (i = 0; i < paramList->NumParameters; i++) {
955 if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) {
956 _mesa_fetch_state(ctx,
957 paramList->Parameters[i].StateIndexes,
958 paramList->ParameterValues[i]);
959 }
960 }
961 }
962
963
964 /**
965 * Basic info about each instruction
966 */
967 struct instruction_info
968 {
969 enum prog_opcode Opcode;
970 const char *Name;
971 GLuint NumSrcRegs;
972 };
973
974 /**
975 * Instruction info
976 * \note Opcode should equal array index!
977 */
978 static const struct instruction_info InstInfo[MAX_OPCODE] = {
979 { OPCODE_ABS, "ABS", 1 },
980 { OPCODE_ADD, "ADD", 2 },
981 { OPCODE_ARA, "ARA", 1 },
982 { OPCODE_ARL, "ARL", 1 },
983 { OPCODE_ARL_NV, "ARL", 1 },
984 { OPCODE_ARR, "ARL", 1 },
985 { OPCODE_BRA, "BRA", 1 },
986 { OPCODE_CAL, "CAL", 1 },
987 { OPCODE_CMP, "CMP", 3 },
988 { OPCODE_COS, "COS", 1 },
989 { OPCODE_DDX, "DDX", 1 },
990 { OPCODE_DDY, "DDY", 1 },
991 { OPCODE_DP3, "DP3", 2 },
992 { OPCODE_DP4, "DP4", 2 },
993 { OPCODE_DPH, "DPH", 2 },
994 { OPCODE_DST, "DST", 2 },
995 { OPCODE_END, "END", 0 },
996 { OPCODE_EX2, "EX2", 1 },
997 { OPCODE_EXP, "EXP", 1 },
998 { OPCODE_FLR, "FLR", 1 },
999 { OPCODE_FRC, "FRC", 1 },
1000 { OPCODE_KIL, "KIL", 1 },
1001 { OPCODE_KIL_NV, "KIL", 0 },
1002 { OPCODE_LG2, "LG2", 1 },
1003 { OPCODE_LIT, "LIT", 1 },
1004 { OPCODE_LOG, "LOG", 1 },
1005 { OPCODE_LRP, "LRP", 3 },
1006 { OPCODE_MAD, "MAD", 3 },
1007 { OPCODE_MAX, "MAX", 2 },
1008 { OPCODE_MIN, "MIN", 2 },
1009 { OPCODE_MOV, "MOV", 1 },
1010 { OPCODE_MUL, "MUL", 2 },
1011 { OPCODE_PK2H, "PK2H", 1 },
1012 { OPCODE_PK2US, "PK2US", 1 },
1013 { OPCODE_PK4B, "PK4B", 1 },
1014 { OPCODE_PK4UB, "PK4UB", 1 },
1015 { OPCODE_POW, "POW", 2 },
1016 { OPCODE_POPA, "POPA", 0 },
1017 { OPCODE_PRINT, "PRINT", 1 },
1018 { OPCODE_PUSHA, "PUSHA", 0 },
1019 { OPCODE_RCC, "RCC", 1 },
1020 { OPCODE_RCP, "RCP", 1 },
1021 { OPCODE_RET, "RET", 1 },
1022 { OPCODE_RFL, "RFL", 1 },
1023 { OPCODE_RSQ, "RSQ", 1 },
1024 { OPCODE_SCS, "SCS", 1 },
1025 { OPCODE_SEQ, "SEQ", 2 },
1026 { OPCODE_SFL, "SFL", 0 },
1027 { OPCODE_SGE, "SGE", 2 },
1028 { OPCODE_SGT, "SGT", 2 },
1029 { OPCODE_SIN, "SIN", 1 },
1030 { OPCODE_SLE, "SLE", 2 },
1031 { OPCODE_SLT, "SLT", 2 },
1032 { OPCODE_SNE, "SNE", 2 },
1033 { OPCODE_SSG, "SSG", 1 },
1034 { OPCODE_STR, "STR", 0 },
1035 { OPCODE_SUB, "SUB", 2 },
1036 { OPCODE_SWZ, "SWZ", 1 },
1037 { OPCODE_TEX, "TEX", 1 },
1038 { OPCODE_TXB, "TXB", 1 },
1039 { OPCODE_TXD, "TXD", 3 },
1040 { OPCODE_TXL, "TXL", 1 },
1041 { OPCODE_TXP, "TXP", 1 },
1042 { OPCODE_TXP_NV, "TXP", 1 },
1043 { OPCODE_UP2H, "UP2H", 1 },
1044 { OPCODE_UP2US, "UP2US", 1 },
1045 { OPCODE_UP4B, "UP4B", 1 },
1046 { OPCODE_UP4UB, "UP4UB", 1 },
1047 { OPCODE_X2D, "X2D", 3 },
1048 { OPCODE_XPD, "XPD", 2 }
1049 };
1050
1051
1052 /**
1053 * Return the number of src registers for the given instruction/opcode.
1054 */
1055 GLuint
1056 _mesa_num_inst_src_regs(enum prog_opcode opcode)
1057 {
1058 GLuint i;
1059 #ifdef DEBUG
1060 for (i = 0; i < MAX_OPCODE; i++) {
1061 ASSERT(i == InstInfo[i].Opcode);
1062 }
1063 #endif
1064 for (i = 0; i < MAX_OPCODE; i++) {
1065 if (InstInfo[i].Opcode == opcode) {
1066 return InstInfo[i].NumSrcRegs;
1067 }
1068 }
1069 _mesa_problem(NULL, "invalid opcode in _mesa_num_inst_src_regs");
1070 return 0;
1071 }
1072
1073
1074 /**
1075 * Return string name for given program opcode.
1076 */
1077 const char *
1078 _mesa_opcode_string(enum prog_opcode opcode)
1079 {
1080 ASSERT(opcode < MAX_OPCODE);
1081 return InstInfo[opcode].Name;
1082 }
1083
1084 /**
1085 * Return string name for given program/register file.
1086 */
1087 static const char *
1088 program_file_string(enum register_file f)
1089 {
1090 switch (f) {
1091 case PROGRAM_TEMPORARY:
1092 return "TEMP";
1093 case PROGRAM_LOCAL_PARAM:
1094 return "LOCAL";
1095 case PROGRAM_ENV_PARAM:
1096 return "ENV";
1097 case PROGRAM_STATE_VAR:
1098 return "STATE";
1099 case PROGRAM_INPUT:
1100 return "INPUT";
1101 case PROGRAM_OUTPUT:
1102 return "OUTPUT";
1103 case PROGRAM_NAMED_PARAM:
1104 return "NAMED";
1105 case PROGRAM_CONSTANT:
1106 return "CONST";
1107 case PROGRAM_WRITE_ONLY:
1108 return "WRITE_ONLY";
1109 case PROGRAM_ADDRESS:
1110 return "ADDR";
1111 default:
1112 return "!unkown!";
1113 }
1114 }
1115
1116
1117 /**
1118 * Return a string representation of the given swizzle word.
1119 */
1120 static const char *
1121 swizzle_string(GLuint swizzle, GLuint negateBase)
1122 {
1123 static const char swz[] = "xyzw01";
1124 static char s[20];
1125 GLuint i = 0;
1126
1127 if (swizzle == SWIZZLE_NOOP && negateBase == 0)
1128 return ""; /* no swizzle/negation */
1129
1130 s[i++] = '.';
1131
1132 if (negateBase & 0x1)
1133 s[i++] = '-';
1134 s[i++] = swz[GET_SWZ(swizzle, 0)];
1135
1136 if (negateBase & 0x2)
1137 s[i++] = '-';
1138 s[i++] = swz[GET_SWZ(swizzle, 1)];
1139
1140 if (negateBase & 0x4)
1141 s[i++] = '-';
1142 s[i++] = swz[GET_SWZ(swizzle, 2)];
1143
1144 if (negateBase & 0x8)
1145 s[i++] = '-';
1146 s[i++] = swz[GET_SWZ(swizzle, 3)];
1147
1148 s[i] = 0;
1149 return s;
1150 }
1151
1152
1153 static const char *
1154 writemask_string(GLuint writeMask)
1155 {
1156 static char s[10];
1157 GLuint i = 0;
1158
1159 if (writeMask == WRITEMASK_XYZW)
1160 return "";
1161
1162 s[i++] = '.';
1163 if (writeMask & WRITEMASK_X)
1164 s[i++] = 'x';
1165 if (writeMask & WRITEMASK_Y)
1166 s[i++] = 'y';
1167 if (writeMask & WRITEMASK_Z)
1168 s[i++] = 'z';
1169 if (writeMask & WRITEMASK_W)
1170 s[i++] = 'w';
1171
1172 s[i] = 0;
1173 return s;
1174 }
1175
1176
1177 /**
1178 * Print a vertx/fragment program to stdout.
1179 * XXX this function could be greatly improved.
1180 */
1181 void
1182 _mesa_print_program(GLuint count, const struct prog_instruction *inst)
1183 {
1184 GLuint i;
1185
1186 for (i = 0; i < count; i++) {
1187 /* inst number */
1188 _mesa_printf("%3d: ", i);
1189
1190 switch (inst[i].Opcode) {
1191 case OPCODE_PRINT:
1192 _mesa_printf("PRINT '%s'", inst[i].Data);
1193 if (inst->SrcReg[0].File != PROGRAM_UNDEFINED) {
1194 _mesa_printf(", ");
1195 _mesa_printf("%s[%d]%s",
1196 program_file_string(inst[i].SrcReg[0].File),
1197 inst[i].SrcReg[0].Index,
1198 swizzle_string(inst[i].SrcReg[0].Swizzle,
1199 inst[i].SrcReg[0].NegateBase));
1200 }
1201 _mesa_printf(";\n");
1202 break;
1203 /* XXX check for a bunch of other special-case instructions */
1204 default:
1205 /* typical alu instruction */
1206 {
1207 const GLuint numRegs = _mesa_num_inst_src_regs(inst[i].Opcode);
1208 GLuint j;
1209
1210 _mesa_printf("%s", _mesa_opcode_string(inst[i].Opcode));
1211
1212 /* frag prog only */
1213 if (inst[i].Saturate)
1214 _mesa_printf("_SAT");
1215
1216 if (inst[i].DstReg.File != PROGRAM_UNDEFINED) {
1217 _mesa_printf(" %s[%d]%s",
1218 program_file_string(inst[i].DstReg.File),
1219 inst[i].DstReg.Index,
1220 writemask_string(inst[i].DstReg.WriteMask));
1221 }
1222
1223 if (numRegs > 0)
1224 _mesa_printf(", ");
1225
1226 for (j = 0; j < numRegs; j++) {
1227 _mesa_printf("%s[%d]%s",
1228 program_file_string(inst[i].SrcReg[j].File),
1229 inst[i].SrcReg[j].Index,
1230 swizzle_string(inst[i].SrcReg[j].Swizzle,
1231 inst[i].SrcReg[j].NegateBase));
1232 if (j + 1 < numRegs)
1233 _mesa_printf(", ");
1234 }
1235
1236 _mesa_printf(";\n");
1237 }
1238 }
1239 }
1240 }
1241
1242
1243
1244
1245 /**********************************************************************/
1246 /* API functions */
1247 /**********************************************************************/
1248
1249
1250 /**
1251 * Bind a program (make it current)
1252 * \note Called from the GL API dispatcher by both glBindProgramNV
1253 * and glBindProgramARB.
1254 */
1255 void GLAPIENTRY
1256 _mesa_BindProgram(GLenum target, GLuint id)
1257 {
1258 struct program *prog;
1259 GET_CURRENT_CONTEXT(ctx);
1260 ASSERT_OUTSIDE_BEGIN_END(ctx);
1261
1262 FLUSH_VERTICES(ctx, _NEW_PROGRAM);
1263
1264 if ((target == GL_VERTEX_PROGRAM_NV
1265 && ctx->Extensions.NV_vertex_program) ||
1266 (target == GL_VERTEX_PROGRAM_ARB
1267 && ctx->Extensions.ARB_vertex_program)) {
1268 /*** Vertex program binding ***/
1269 struct vertex_program *curProg = ctx->VertexProgram.Current;
1270 if (curProg->Base.Id == id) {
1271 /* binding same program - no change */
1272 return;
1273 }
1274 if (curProg->Base.Id != 0) {
1275 /* decrement refcount on previously bound vertex program */
1276 curProg->Base.RefCount--;
1277 /* and delete if refcount goes below one */
1278 if (curProg->Base.RefCount <= 0) {
1279 /* the program ID was already removed from the hash table */
1280 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
1281 }
1282 }
1283 }
1284 else if ((target == GL_FRAGMENT_PROGRAM_NV
1285 && ctx->Extensions.NV_fragment_program) ||
1286 (target == GL_FRAGMENT_PROGRAM_ARB
1287 && ctx->Extensions.ARB_fragment_program)) {
1288 /*** Fragment program binding ***/
1289 struct fragment_program *curProg = ctx->FragmentProgram.Current;
1290 if (curProg->Base.Id == id) {
1291 /* binding same program - no change */
1292 return;
1293 }
1294 if (curProg->Base.Id != 0) {
1295 /* decrement refcount on previously bound fragment program */
1296 curProg->Base.RefCount--;
1297 /* and delete if refcount goes below one */
1298 if (curProg->Base.RefCount <= 0) {
1299 /* the program ID was already removed from the hash table */
1300 ctx->Driver.DeleteProgram(ctx, &(curProg->Base));
1301 }
1302 }
1303 }
1304 else {
1305 _mesa_error(ctx, GL_INVALID_ENUM, "glBindProgramNV/ARB(target)");
1306 return;
1307 }
1308
1309 /* NOTE: binding to a non-existant program is not an error.
1310 * That's supposed to be caught in glBegin.
1311 */
1312 if (id == 0) {
1313 /* Bind default program */
1314 prog = NULL;
1315 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB)
1316 prog = ctx->Shared->DefaultVertexProgram;
1317 else
1318 prog = ctx->Shared->DefaultFragmentProgram;
1319 }
1320 else {
1321 /* Bind user program */
1322 prog = (struct program *) _mesa_HashLookup(ctx->Shared->Programs, id);
1323 if (!prog || prog == &_mesa_DummyProgram) {
1324 /* allocate a new program now */
1325 prog = ctx->Driver.NewProgram(ctx, target, id);
1326 if (!prog) {
1327 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindProgramNV/ARB");
1328 return;
1329 }
1330 _mesa_HashInsert(ctx->Shared->Programs, id, prog);
1331 }
1332 else if (prog->Target != target) {
1333 _mesa_error(ctx, GL_INVALID_OPERATION,
1334 "glBindProgramNV/ARB(target mismatch)");
1335 return;
1336 }
1337 }
1338
1339 /* bind now */
1340 if (target == GL_VERTEX_PROGRAM_NV || target == GL_VERTEX_PROGRAM_ARB) {
1341 ctx->VertexProgram.Current = (struct vertex_program *) prog;
1342 }
1343 else if (target == GL_FRAGMENT_PROGRAM_NV || target == GL_FRAGMENT_PROGRAM_ARB) {
1344 ctx->FragmentProgram.Current = (struct fragment_program *) prog;
1345 }
1346
1347 /* Never null pointers */
1348 ASSERT(ctx->VertexProgram.Current);
1349 ASSERT(ctx->FragmentProgram.Current);
1350
1351 if (prog)
1352 prog->RefCount++;
1353
1354 if (ctx->Driver.BindProgram)
1355 ctx->Driver.BindProgram(ctx, target, prog);
1356 }
1357
1358
1359 /**
1360 * Delete a list of programs.
1361 * \note Not compiled into display lists.
1362 * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
1363 */
1364 void GLAPIENTRY
1365 _mesa_DeletePrograms(GLsizei n, const GLuint *ids)
1366 {
1367 GLint i;
1368 GET_CURRENT_CONTEXT(ctx);
1369 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1370
1371 if (n < 0) {
1372 _mesa_error( ctx, GL_INVALID_VALUE, "glDeleteProgramsNV" );
1373 return;
1374 }
1375
1376 for (i = 0; i < n; i++) {
1377 if (ids[i] != 0) {
1378 struct program *prog = (struct program *)
1379 _mesa_HashLookup(ctx->Shared->Programs, ids[i]);
1380 if (prog == &_mesa_DummyProgram) {
1381 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1382 }
1383 else if (prog) {
1384 /* Unbind program if necessary */
1385 if (prog->Target == GL_VERTEX_PROGRAM_NV ||
1386 prog->Target == GL_VERTEX_STATE_PROGRAM_NV) {
1387 if (ctx->VertexProgram.Current &&
1388 ctx->VertexProgram.Current->Base.Id == ids[i]) {
1389 /* unbind this currently bound program */
1390 _mesa_BindProgram(prog->Target, 0);
1391 }
1392 }
1393 else if (prog->Target == GL_FRAGMENT_PROGRAM_NV ||
1394 prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
1395 if (ctx->FragmentProgram.Current &&
1396 ctx->FragmentProgram.Current->Base.Id == ids[i]) {
1397 /* unbind this currently bound program */
1398 _mesa_BindProgram(prog->Target, 0);
1399 }
1400 }
1401 else {
1402 _mesa_problem(ctx, "bad target in glDeleteProgramsNV");
1403 return;
1404 }
1405 /* The ID is immediately available for re-use now */
1406 _mesa_HashRemove(ctx->Shared->Programs, ids[i]);
1407 prog->RefCount--;
1408 if (prog->RefCount <= 0) {
1409 ctx->Driver.DeleteProgram(ctx, prog);
1410 }
1411 }
1412 }
1413 }
1414 }
1415
1416
1417 /**
1418 * Generate a list of new program identifiers.
1419 * \note Not compiled into display lists.
1420 * \note Called by both glGenProgramsNV and glGenProgramsARB.
1421 */
1422 void GLAPIENTRY
1423 _mesa_GenPrograms(GLsizei n, GLuint *ids)
1424 {
1425 GLuint first;
1426 GLuint i;
1427 GET_CURRENT_CONTEXT(ctx);
1428 ASSERT_OUTSIDE_BEGIN_END(ctx);
1429
1430 if (n < 0) {
1431 _mesa_error(ctx, GL_INVALID_VALUE, "glGenPrograms");
1432 return;
1433 }
1434
1435 if (!ids)
1436 return;
1437
1438 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->Programs, n);
1439
1440 /* Insert pointer to dummy program as placeholder */
1441 for (i = 0; i < (GLuint) n; i++) {
1442 _mesa_HashInsert(ctx->Shared->Programs, first + i, &_mesa_DummyProgram);
1443 }
1444
1445 /* Return the program names */
1446 for (i = 0; i < (GLuint) n; i++) {
1447 ids[i] = first + i;
1448 }
1449 }
1450
1451
1452 /**
1453 * Determine if id names a vertex or fragment program.
1454 * \note Not compiled into display lists.
1455 * \note Called from both glIsProgramNV and glIsProgramARB.
1456 * \param id is the program identifier
1457 * \return GL_TRUE if id is a program, else GL_FALSE.
1458 */
1459 GLboolean GLAPIENTRY
1460 _mesa_IsProgram(GLuint id)
1461 {
1462 GET_CURRENT_CONTEXT(ctx);
1463 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1464
1465 if (id == 0)
1466 return GL_FALSE;
1467
1468 if (_mesa_HashLookup(ctx->Shared->Programs, id))
1469 return GL_TRUE;
1470 else
1471 return GL_FALSE;
1472 }
1473
1474
1475
1476 /**********************************************************************/
1477 /* GL_MESA_program_debug extension */
1478 /**********************************************************************/
1479
1480
1481 /* XXX temporary */
1482 GLAPI void GLAPIENTRY
1483 glProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1484 GLvoid *data)
1485 {
1486 _mesa_ProgramCallbackMESA(target, callback, data);
1487 }
1488
1489
1490 void
1491 _mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
1492 GLvoid *data)
1493 {
1494 GET_CURRENT_CONTEXT(ctx);
1495
1496 switch (target) {
1497 case GL_FRAGMENT_PROGRAM_ARB:
1498 if (!ctx->Extensions.ARB_fragment_program) {
1499 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1500 return;
1501 }
1502 ctx->FragmentProgram.Callback = callback;
1503 ctx->FragmentProgram.CallbackData = data;
1504 break;
1505 case GL_FRAGMENT_PROGRAM_NV:
1506 if (!ctx->Extensions.NV_fragment_program) {
1507 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1508 return;
1509 }
1510 ctx->FragmentProgram.Callback = callback;
1511 ctx->FragmentProgram.CallbackData = data;
1512 break;
1513 case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
1514 if (!ctx->Extensions.ARB_vertex_program &&
1515 !ctx->Extensions.NV_vertex_program) {
1516 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1517 return;
1518 }
1519 ctx->VertexProgram.Callback = callback;
1520 ctx->VertexProgram.CallbackData = data;
1521 break;
1522 default:
1523 _mesa_error(ctx, GL_INVALID_ENUM, "glProgramCallbackMESA(target)");
1524 return;
1525 }
1526 }
1527
1528
1529 /* XXX temporary */
1530 GLAPI void GLAPIENTRY
1531 glGetProgramRegisterfvMESA(GLenum target,
1532 GLsizei len, const GLubyte *registerName,
1533 GLfloat *v)
1534 {
1535 _mesa_GetProgramRegisterfvMESA(target, len, registerName, v);
1536 }
1537
1538
1539 void
1540 _mesa_GetProgramRegisterfvMESA(GLenum target,
1541 GLsizei len, const GLubyte *registerName,
1542 GLfloat *v)
1543 {
1544 char reg[1000];
1545 GET_CURRENT_CONTEXT(ctx);
1546
1547 /* We _should_ be inside glBegin/glEnd */
1548 #if 0
1549 if (ctx->Driver.CurrentExecPrimitive == PRIM_OUTSIDE_BEGIN_END) {
1550 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramRegisterfvMESA");
1551 return;
1552 }
1553 #endif
1554
1555 /* make null-terminated copy of registerName */
1556 len = MIN2((unsigned int) len, sizeof(reg) - 1);
1557 _mesa_memcpy(reg, registerName, len);
1558 reg[len] = 0;
1559
1560 switch (target) {
1561 case GL_VERTEX_PROGRAM_NV:
1562 if (!ctx->Extensions.ARB_vertex_program &&
1563 !ctx->Extensions.NV_vertex_program) {
1564 _mesa_error(ctx, GL_INVALID_ENUM,
1565 "glGetProgramRegisterfvMESA(target)");
1566 return;
1567 }
1568 if (!ctx->VertexProgram._Enabled) {
1569 _mesa_error(ctx, GL_INVALID_OPERATION,
1570 "glGetProgramRegisterfvMESA");
1571 return;
1572 }
1573 /* GL_NV_vertex_program */
1574 if (reg[0] == 'R') {
1575 /* Temp register */
1576 GLint i = _mesa_atoi(reg + 1);
1577 if (i >= (GLint)ctx->Const.VertexProgram.MaxTemps) {
1578 _mesa_error(ctx, GL_INVALID_VALUE,
1579 "glGetProgramRegisterfvMESA(registerName)");
1580 return;
1581 }
1582 COPY_4V(v, ctx->VertexProgram.Temporaries[i]);
1583 }
1584 else if (reg[0] == 'v' && reg[1] == '[') {
1585 /* Vertex Input attribute */
1586 GLuint i;
1587 for (i = 0; i < ctx->Const.VertexProgram.MaxAttribs; i++) {
1588 const char *name = _mesa_nv_vertex_input_register_name(i);
1589 char number[10];
1590 _mesa_sprintf(number, "%d", i);
1591 if (_mesa_strncmp(reg + 2, name, 4) == 0 ||
1592 _mesa_strncmp(reg + 2, number, _mesa_strlen(number)) == 0) {
1593 COPY_4V(v, ctx->VertexProgram.Inputs[i]);
1594 return;
1595 }
1596 }
1597 _mesa_error(ctx, GL_INVALID_VALUE,
1598 "glGetProgramRegisterfvMESA(registerName)");
1599 return;
1600 }
1601 else if (reg[0] == 'o' && reg[1] == '[') {
1602 /* Vertex output attribute */
1603 }
1604 /* GL_ARB_vertex_program */
1605 else if (_mesa_strncmp(reg, "vertex.", 7) == 0) {
1606
1607 }
1608 else {
1609 _mesa_error(ctx, GL_INVALID_VALUE,
1610 "glGetProgramRegisterfvMESA(registerName)");
1611 return;
1612 }
1613 break;
1614 case GL_FRAGMENT_PROGRAM_ARB:
1615 if (!ctx->Extensions.ARB_fragment_program) {
1616 _mesa_error(ctx, GL_INVALID_ENUM,
1617 "glGetProgramRegisterfvMESA(target)");
1618 return;
1619 }
1620 if (!ctx->FragmentProgram._Enabled) {
1621 _mesa_error(ctx, GL_INVALID_OPERATION,
1622 "glGetProgramRegisterfvMESA");
1623 return;
1624 }
1625 /* XXX to do */
1626 break;
1627 case GL_FRAGMENT_PROGRAM_NV:
1628 if (!ctx->Extensions.NV_fragment_program) {
1629 _mesa_error(ctx, GL_INVALID_ENUM,
1630 "glGetProgramRegisterfvMESA(target)");
1631 return;
1632 }
1633 if (!ctx->FragmentProgram._Enabled) {
1634 _mesa_error(ctx, GL_INVALID_OPERATION,
1635 "glGetProgramRegisterfvMESA");
1636 return;
1637 }
1638 if (reg[0] == 'R') {
1639 /* Temp register */
1640 GLint i = _mesa_atoi(reg + 1);
1641 if (i >= (GLint)ctx->Const.FragmentProgram.MaxTemps) {
1642 _mesa_error(ctx, GL_INVALID_VALUE,
1643 "glGetProgramRegisterfvMESA(registerName)");
1644 return;
1645 }
1646 COPY_4V(v, ctx->FragmentProgram.Machine.Temporaries[i]);
1647 }
1648 else if (reg[0] == 'f' && reg[1] == '[') {
1649 /* Fragment input attribute */
1650 GLuint i;
1651 for (i = 0; i < ctx->Const.FragmentProgram.MaxAttribs; i++) {
1652 const char *name = _mesa_nv_fragment_input_register_name(i);
1653 if (_mesa_strncmp(reg + 2, name, 4) == 0) {
1654 COPY_4V(v, ctx->FragmentProgram.Machine.Inputs[i]);
1655 return;
1656 }
1657 }
1658 _mesa_error(ctx, GL_INVALID_VALUE,
1659 "glGetProgramRegisterfvMESA(registerName)");
1660 return;
1661 }
1662 else if (_mesa_strcmp(reg, "o[COLR]") == 0) {
1663 /* Fragment output color */
1664 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_COLR]);
1665 }
1666 else if (_mesa_strcmp(reg, "o[COLH]") == 0) {
1667 /* Fragment output color */
1668 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_COLH]);
1669 }
1670 else if (_mesa_strcmp(reg, "o[DEPR]") == 0) {
1671 /* Fragment output depth */
1672 COPY_4V(v, ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_DEPR]);
1673 }
1674 else {
1675 /* try user-defined identifiers */
1676 const GLfloat *value = _mesa_lookup_parameter_value(
1677 ctx->FragmentProgram.Current->Parameters, -1, reg);
1678 if (value) {
1679 COPY_4V(v, value);
1680 }
1681 else {
1682 _mesa_error(ctx, GL_INVALID_VALUE,
1683 "glGetProgramRegisterfvMESA(registerName)");
1684 return;
1685 }
1686 }
1687 break;
1688 default:
1689 _mesa_error(ctx, GL_INVALID_ENUM,
1690 "glGetProgramRegisterfvMESA(target)");
1691 return;
1692 }
1693
1694 }