2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
25 #define DEBUG_PARSING 0
28 * \file arbprogparse.c
29 * ARB_*_program parser core
33 #include "main/glheader.h"
34 #include "main/imports.h"
35 #include "main/context.h"
36 #include "main/macros.h"
37 #include "main/mtypes.h"
38 #include "shader/grammar/grammar_mesa.h"
39 #include "arbprogparse.h"
41 #include "prog_parameter.h"
42 #include "prog_statevars.h"
43 #include "prog_instruction.h"
46 /* For ARB programs, use the NV instruction limits */
47 #define MAX_INSTRUCTIONS MAX2(MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS, \
48 MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS)
52 * This is basically a union of the vertex_program and fragment_program
53 * structs that we can use to parse the program into
55 * XXX we can probably get rid of this entirely someday.
59 struct gl_program Base
;
61 GLuint Position
; /* Just used for error reporting while parsing */
65 /* ARB_vertex_progmra options */
66 GLboolean HintPositionInvariant
;
68 /* ARB_fragment_progmra options */
69 GLenum PrecisionOption
; /* GL_DONT_CARE, GL_NICEST or GL_FASTEST */
70 GLenum FogOption
; /* GL_NONE, GL_LINEAR, GL_EXP or GL_EXP2 */
72 /* ARB_fragment_program specifics */
73 GLbitfield TexturesUsed
[MAX_TEXTURE_IMAGE_UNITS
];
74 GLbitfield ShadowSamplers
;
75 GLuint NumAluInstructions
;
76 GLuint NumTexInstructions
;
77 GLuint NumTexIndirections
;
85 * Fragment Program Stuff:
86 * -----------------------------------------------------
88 * - things from Michal's email
90 * + not-overflowing floats (don't use parse_integer..)
91 * + can remove range checking in arbparse.c
93 * - check all limits of number of various variables
98 * Vertex Program Stuff:
99 * -----------------------------------------------------
100 * - Optimize param array usage and count limits correctly, see spec,
102 * + Record if an array is reference absolutly or relatively (or both)
103 * + For absolute arrays, store a bitmap of accesses
104 * + For single parameters, store an access flag
105 * + After parsing, make a parameter cleanup and merging pass, where
106 * relative arrays are layed out first, followed by abs arrays, and
107 * finally single state.
108 * + Remap offsets for param src and dst registers
109 * + Now we can properly count parameter usage
111 * - Multiple state binding errors in param arrays (see spec, just before
116 * -----------------------------------------------------
117 * - User clipping planes vs. PositionInvariant
118 * - Is it sufficient to just multiply by the mvp to transform in the
119 * PositionInvariant case? Or do we need something more involved?
121 * - vp_src swizzle is GLubyte, fp_src swizzle is GLuint
122 * - fetch state listed in program_parameters list
123 * + WTF should this go???
124 * + currently in nvvertexec.c and s_nvfragprog.c
126 * - allow for multiple address registers (and fetch address regs properly)
129 * -----------------------------------------------------
130 * - remove any leftover unused grammer.c stuff (dict_ ?)
131 * - fix grammer.c error handling so its not static
132 * - #ifdef around stuff pertaining to extentions
134 * Outstanding Questions:
135 * -----------------------------------------------------
136 * - ARB_matrix_palette / ARB_vertex_blend -- not supported
137 * what gets hacked off because of this:
138 * + VERTEX_ATTRIB_MATRIXINDEX
139 * + VERTEX_ATTRIB_WEIGHT
143 * - When can we fetch env/local params from their own register files, and
144 * when to we have to fetch them into the main state register file?
148 * -----------------------------------------------------
151 /* Changes since moving the file to shader directory
153 2004-III-4 ------------------------------------------------------------
154 - added #include "grammar_mesa.h"
155 - removed grammar specific code part (it resides now in grammar.c)
156 - added GL_ARB_fragment_program_shadow tokens
157 - modified #include "arbparse_syn.h"
158 - major changes inside _mesa_parse_arb_program()
159 - check the program string for '\0' characters
160 - copy the program string to a one-byte-longer location to have
162 - position invariance test (not writing to result.position) moved
166 typedef GLubyte
*production
;
170 * This is the text describing the rules to parse the grammar
172 LONGSTRING
static char arb_grammar_text
[] =
173 #include "arbprogram_syn.h"
177 * These should match up with the values defined in arbprogram.syn
182 - changed and merged V_* and F_* opcode values to OP_*.
183 - added GL_ARB_fragment_program_shadow specific tokens (michal)
185 #define REVISION 0x0a
188 #define FRAGMENT_PROGRAM 0x01
189 #define VERTEX_PROGRAM 0x02
191 /* program section */
193 #define INSTRUCTION 0x02
194 #define DECLARATION 0x03
197 /* GL_ARB_fragment_program option */
198 #define ARB_PRECISION_HINT_FASTEST 0x00
199 #define ARB_PRECISION_HINT_NICEST 0x01
200 #define ARB_FOG_EXP 0x02
201 #define ARB_FOG_EXP2 0x03
202 #define ARB_FOG_LINEAR 0x04
204 /* GL_ARB_vertex_program option */
205 #define ARB_POSITION_INVARIANT 0x05
207 /* GL_ARB_fragment_program_shadow option */
208 #define ARB_FRAGMENT_PROGRAM_SHADOW 0x06
210 /* GL_ARB_draw_buffers option */
211 #define ARB_DRAW_BUFFERS 0x07
213 /* GL_MESA_texture_array option */
214 #define MESA_TEXTURE_ARRAY 0x08
216 /* GL_ARB_fragment_program instruction class */
217 #define OP_ALU_INST 0x00
218 #define OP_TEX_INST 0x01
220 /* GL_ARB_vertex_program instruction class */
223 /* GL_ARB_fragment_program instruction type */
224 #define OP_ALU_VECTOR 0x00
225 #define OP_ALU_SCALAR 0x01
226 #define OP_ALU_BINSC 0x02
227 #define OP_ALU_BIN 0x03
228 #define OP_ALU_TRI 0x04
229 #define OP_ALU_SWZ 0x05
230 #define OP_TEX_SAMPLE 0x06
231 #define OP_TEX_KIL 0x07
233 /* GL_ARB_vertex_program instruction type */
234 #define OP_ALU_ARL 0x08
242 /* GL_ARB_fragment_program instruction code */
244 #define OP_ABS_SAT 0x1B
246 #define OP_FLR_SAT 0x26
248 #define OP_FRC_SAT 0x27
250 #define OP_LIT_SAT 0x2A
252 #define OP_MOV_SAT 0x30
254 #define OP_COS_SAT 0x20
256 #define OP_EX2_SAT 0x25
258 #define OP_LG2_SAT 0x29
260 #define OP_RCP_SAT 0x33
262 #define OP_RSQ_SAT 0x34
264 #define OP_SIN_SAT 0x39
266 #define OP_SCS_SAT 0x36
268 #define OP_POW_SAT 0x32
270 #define OP_ADD_SAT 0x1C
272 #define OP_DP3_SAT 0x21
274 #define OP_DP4_SAT 0x22
276 #define OP_DPH_SAT 0x23
278 #define OP_DST_SAT 0x24
280 #define OP_MAX_SAT 0x2E
282 #define OP_MIN_SAT 0x2F
284 #define OP_MUL_SAT 0x31
286 #define OP_SGE_SAT 0x37
288 #define OP_SLT_SAT 0x3A
290 #define OP_SUB_SAT 0x3B
292 #define OP_XPD_SAT 0x43
294 #define OP_CMP_SAT 0x1E
296 #define OP_LRP_SAT 0x2C
298 #define OP_MAD_SAT 0x2D
300 #define OP_SWZ_SAT 0x3C
302 #define OP_TEX_SAT 0x3E
304 #define OP_TXB_SAT 0x40
306 #define OP_TXP_SAT 0x42
309 /* GL_ARB_vertex_program instruction code */
338 /* fragment attribute binding */
339 #define FRAGMENT_ATTRIB_COLOR 0x01
340 #define FRAGMENT_ATTRIB_TEXCOORD 0x02
341 #define FRAGMENT_ATTRIB_FOGCOORD 0x03
342 #define FRAGMENT_ATTRIB_POSITION 0x04
344 /* vertex attribute binding */
345 #define VERTEX_ATTRIB_POSITION 0x01
346 #define VERTEX_ATTRIB_WEIGHT 0x02
347 #define VERTEX_ATTRIB_NORMAL 0x03
348 #define VERTEX_ATTRIB_COLOR 0x04
349 #define VERTEX_ATTRIB_FOGCOORD 0x05
350 #define VERTEX_ATTRIB_TEXCOORD 0x06
351 #define VERTEX_ATTRIB_MATRIXINDEX 0x07
352 #define VERTEX_ATTRIB_GENERIC 0x08
354 /* fragment result binding */
355 #define FRAGMENT_RESULT_COLOR 0x01
356 #define FRAGMENT_RESULT_DEPTH 0x02
358 /* vertex result binding */
359 #define VERTEX_RESULT_POSITION 0x01
360 #define VERTEX_RESULT_COLOR 0x02
361 #define VERTEX_RESULT_FOGCOORD 0x03
362 #define VERTEX_RESULT_POINTSIZE 0x04
363 #define VERTEX_RESULT_TEXCOORD 0x05
366 #define TEXTARGET_1D 0x01
367 #define TEXTARGET_2D 0x02
368 #define TEXTARGET_3D 0x03
369 #define TEXTARGET_RECT 0x04
370 #define TEXTARGET_CUBE 0x05
371 /* GL_ARB_fragment_program_shadow */
372 #define TEXTARGET_SHADOW1D 0x06
373 #define TEXTARGET_SHADOW2D 0x07
374 #define TEXTARGET_SHADOWRECT 0x08
375 /* GL_MESA_texture_array */
376 #define TEXTARGET_1D_ARRAY 0x09
377 #define TEXTARGET_2D_ARRAY 0x0a
378 #define TEXTARGET_SHADOW1D_ARRAY 0x0b
379 #define TEXTARGET_SHADOW2D_ARRAY 0x0c
382 #define FACE_FRONT 0x00
383 #define FACE_BACK 0x01
386 #define COLOR_PRIMARY 0x00
387 #define COLOR_SECONDARY 0x01
390 #define COMPONENT_X 0x00
391 #define COMPONENT_Y 0x01
392 #define COMPONENT_Z 0x02
393 #define COMPONENT_W 0x03
394 #define COMPONENT_0 0x04
395 #define COMPONENT_1 0x05
397 /* array index type */
398 #define ARRAY_INDEX_ABSOLUTE 0x00
399 #define ARRAY_INDEX_RELATIVE 0x01
402 #define MATRIX_MODELVIEW 0x01
403 #define MATRIX_PROJECTION 0x02
404 #define MATRIX_MVP 0x03
405 #define MATRIX_TEXTURE 0x04
406 #define MATRIX_PALETTE 0x05
407 #define MATRIX_PROGRAM 0x06
409 /* matrix modifier */
410 #define MATRIX_MODIFIER_IDENTITY 0x00
411 #define MATRIX_MODIFIER_INVERSE 0x01
412 #define MATRIX_MODIFIER_TRANSPOSE 0x02
413 #define MATRIX_MODIFIER_INVTRANS 0x03
416 #define CONSTANT_SCALAR 0x01
417 #define CONSTANT_VECTOR 0x02
419 /* program param type */
420 #define PROGRAM_PARAM_ENV 0x01
421 #define PROGRAM_PARAM_LOCAL 0x02
424 #define REGISTER_ATTRIB 0x01
425 #define REGISTER_PARAM 0x02
426 #define REGISTER_RESULT 0x03
427 #define REGISTER_ESTABLISHED_NAME 0x04
430 #define PARAM_NULL 0x00
431 #define PARAM_ARRAY_ELEMENT 0x01
432 #define PARAM_STATE_ELEMENT 0x02
433 #define PARAM_PROGRAM_ELEMENT 0x03
434 #define PARAM_PROGRAM_ELEMENTS 0x04
435 #define PARAM_CONSTANT 0x05
437 /* param state property */
438 #define STATE_MATERIAL_PARSER 0x01
439 #define STATE_LIGHT_PARSER 0x02
440 #define STATE_LIGHT_MODEL 0x03
441 #define STATE_LIGHT_PROD 0x04
442 #define STATE_FOG 0x05
443 #define STATE_MATRIX_ROWS 0x06
444 /* GL_ARB_fragment_program */
445 #define STATE_TEX_ENV 0x07
446 #define STATE_DEPTH 0x08
447 /* GL_ARB_vertex_program */
448 #define STATE_TEX_GEN 0x09
449 #define STATE_CLIP_PLANE 0x0A
450 #define STATE_POINT 0x0B
452 /* state material property */
453 #define MATERIAL_AMBIENT 0x01
454 #define MATERIAL_DIFFUSE 0x02
455 #define MATERIAL_SPECULAR 0x03
456 #define MATERIAL_EMISSION 0x04
457 #define MATERIAL_SHININESS 0x05
459 /* state light property */
460 #define LIGHT_AMBIENT 0x01
461 #define LIGHT_DIFFUSE 0x02
462 #define LIGHT_SPECULAR 0x03
463 #define LIGHT_POSITION 0x04
464 #define LIGHT_ATTENUATION 0x05
465 #define LIGHT_HALF 0x06
466 #define LIGHT_SPOT_DIRECTION 0x07
468 /* state light model property */
469 #define LIGHT_MODEL_AMBIENT 0x01
470 #define LIGHT_MODEL_SCENECOLOR 0x02
472 /* state light product property */
473 #define LIGHT_PROD_AMBIENT 0x01
474 #define LIGHT_PROD_DIFFUSE 0x02
475 #define LIGHT_PROD_SPECULAR 0x03
477 /* state texture environment property */
478 #define TEX_ENV_COLOR 0x01
480 /* state texture generation coord property */
481 #define TEX_GEN_EYE 0x01
482 #define TEX_GEN_OBJECT 0x02
484 /* state fog property */
485 #define FOG_COLOR 0x01
486 #define FOG_PARAMS 0x02
488 /* state depth property */
489 #define DEPTH_RANGE 0x01
491 /* state point parameters property */
492 #define POINT_SIZE 0x01
493 #define POINT_ATTENUATION 0x02
501 /* GL_ARB_vertex_program */
504 /*-----------------------------------------------------------------------
505 * From here on down is the semantic checking portion
510 * Variable Table Handling functions
525 * Setting an explicit field for each of the binding properties is a bit
526 * wasteful of space, but it should be much more clear when reading later on..
530 const GLubyte
*name
; /* don't free() - no need */
532 GLuint address_binding
; /* The index of the address register we should
534 GLuint attrib_binding
; /* For type vt_attrib, see nvfragprog.h for values */
535 GLuint attrib_is_generic
; /* If the attrib was specified through a generic
537 GLuint temp_binding
; /* The index of the temp register we are to use */
538 GLuint output_binding
; /* Output/result register number */
539 struct var_cache
*alias_binding
; /* For type vt_alias, points to the var_cache entry
540 * that this is aliased to */
541 GLuint param_binding_type
; /* {PROGRAM_STATE_VAR, PROGRAM_LOCAL_PARAM,
542 * PROGRAM_ENV_PARAM} */
543 GLuint param_binding_begin
; /* This is the offset into the program_parameter_list where
544 * the tokens representing our bound state (or constants)
546 GLuint param_binding_length
; /* This is how many entries in the the program_parameter_list
547 * we take up with our state tokens or constants. Note that
548 * this is _not_ the same as the number of param registers
549 * we eventually use */
550 struct var_cache
*next
;
554 var_cache_create (struct var_cache
**va
)
556 *va
= (struct var_cache
*) _mesa_malloc (sizeof (struct var_cache
));
559 (**va
).type
= vt_none
;
560 (**va
).attrib_binding
= ~0;
561 (**va
).attrib_is_generic
= 0;
562 (**va
).temp_binding
= ~0;
563 (**va
).output_binding
= ~0;
564 (**va
).param_binding_type
= ~0;
565 (**va
).param_binding_begin
= ~0;
566 (**va
).param_binding_length
= ~0;
567 (**va
).alias_binding
= NULL
;
573 var_cache_destroy (struct var_cache
**va
)
576 var_cache_destroy (&(**va
).next
);
583 var_cache_append (struct var_cache
**va
, struct var_cache
*nv
)
586 var_cache_append (&(**va
).next
, nv
);
591 static struct var_cache
*
592 var_cache_find (struct var_cache
*va
, const GLubyte
* name
)
594 /*struct var_cache *first = va;*/
597 if (!_mesa_strcmp ( (const char*) name
, (const char*) va
->name
)) {
598 if (va
->type
== vt_alias
)
599 return va
->alias_binding
;
612 * Called when an error is detected while parsing/compiling a program.
613 * Sets the ctx->Program.ErrorString field to descript and records a
614 * GL_INVALID_OPERATION error.
615 * \param position position of error in program string
616 * \param descrip verbose error description
619 program_error(GLcontext
*ctx
, GLint position
, const char *descrip
)
622 const char *prefix
= "glProgramString(", *suffix
= ")";
623 char *str
= (char *) _mesa_malloc(_mesa_strlen(descrip
) +
624 _mesa_strlen(prefix
) +
625 _mesa_strlen(suffix
) + 1);
627 _mesa_sprintf(str
, "%s%s%s", prefix
, descrip
, suffix
);
628 _mesa_error(ctx
, GL_INVALID_OPERATION
, str
);
632 _mesa_set_program_error(ctx
, position
, descrip
);
637 * As above, but with an extra string parameter for more info.
640 program_error2(GLcontext
*ctx
, GLint position
, const char *descrip
,
644 const char *prefix
= "glProgramString(", *suffix
= ")";
645 char *str
= (char *) _mesa_malloc(_mesa_strlen(descrip
) +
648 _mesa_strlen(prefix
) +
649 _mesa_strlen(suffix
) + 1);
651 _mesa_sprintf(str
, "%s%s: %s%s", prefix
, descrip
, var
, suffix
);
652 _mesa_error(ctx
, GL_INVALID_OPERATION
, str
);
657 char *str
= (char *) _mesa_malloc(_mesa_strlen(descrip
) +
659 _mesa_strlen(var
) + 1);
661 _mesa_sprintf(str
, "%s: %s", descrip
, var
);
663 _mesa_set_program_error(ctx
, position
, str
);
673 * constructs an integer from 4 GLubytes in LE format
676 parse_position (const GLubyte
** inst
)
680 value
= (GLuint
) (*(*inst
)++);
681 value
+= (GLuint
) (*(*inst
)++) * 0x100;
682 value
+= (GLuint
) (*(*inst
)++) * 0x10000;
683 value
+= (GLuint
) (*(*inst
)++) * 0x1000000;
689 * This will, given a string, lookup the string as a variable name in the
690 * var cache. If the name is found, the var cache node corresponding to the
691 * var name is returned. If it is not found, a new entry is allocated
693 * \param I Points into the binary array where the string identifier begins
694 * \param found 1 if the string was found in the var_cache, 0 if it was allocated
695 * \return The location on the var_cache corresponding the the string starting at I
697 static struct var_cache
*
698 parse_string (const GLubyte
** inst
, struct var_cache
**vc_head
,
699 struct arb_program
*Program
, GLuint
* found
)
701 const GLubyte
*i
= *inst
;
702 struct var_cache
*va
= NULL
;
705 *inst
+= _mesa_strlen ((char *) i
) + 1;
707 va
= var_cache_find (*vc_head
, i
);
715 var_cache_create (&va
);
716 va
->name
= (const GLubyte
*) i
;
718 var_cache_append (vc_head
, va
);
724 parse_string_without_adding (const GLubyte
** inst
, struct arb_program
*Program
)
726 const GLubyte
*i
= *inst
;
729 *inst
+= _mesa_strlen ((char *) i
) + 1;
735 * \return -1 if we parse '-', return 1 otherwise
738 parse_sign (const GLubyte
** inst
)
740 /*return *(*inst)++ != '+'; */
746 else if (**inst
== '+') {
755 * parses and returns signed integer
758 parse_integer (const GLubyte
** inst
, struct arb_program
*Program
)
763 /* check if *inst points to '+' or '-'
764 * if yes, grab the sign and increment *inst
766 sign
= parse_sign (inst
);
768 /* now check if *inst points to 0
769 * if yes, increment the *inst and return the default value
776 /* parse the integer as you normally would do it */
777 value
= _mesa_atoi (parse_string_without_adding (inst
, Program
));
779 /* now, after terminating 0 there is a position
780 * to parse it - parse_position()
782 Program
->Position
= parse_position (inst
);
788 Accumulate this string of digits, and return them as
789 a large integer represented in floating point (for range).
790 If scale is not NULL, also accumulates a power-of-ten
791 integer scale factor that represents the number of digits
795 parse_float_string(const GLubyte
** inst
, struct arb_program
*Program
, GLdouble
*scale
)
797 GLdouble value
= 0.0;
798 GLdouble oscale
= 1.0;
800 if (**inst
== 0) { /* this string of digits is empty-- do nothing */
803 else { /* nonempty string-- parse out the digits */
804 while (**inst
>= '0' && **inst
<= '9') {
805 GLubyte digit
= *((*inst
)++);
806 value
= value
* 10.0 + (GLint
) (digit
- '0');
809 assert(**inst
== 0); /* integer string should end with 0 */
810 (*inst
)++; /* skip over terminating 0 */
811 Program
->Position
= parse_position(inst
); /* skip position (from integer) */
819 Parse an unsigned floating-point number from this stream of tokenized
820 characters. Example floating-point formats supported:
828 parse_float (const GLubyte
** inst
, struct arb_program
*Program
)
831 GLdouble whole
, fraction
, fracScale
= 1.0;
833 whole
= parse_float_string(inst
, Program
, 0);
834 fraction
= parse_float_string(inst
, Program
, &fracScale
);
836 /* Parse signed exponent */
837 exponent
= parse_integer(inst
, Program
); /* This is the exponent */
839 /* Assemble parts of floating-point number: */
840 return (GLfloat
) ((whole
+ fraction
/ fracScale
) *
841 _mesa_pow(10.0, (GLfloat
) exponent
));
848 parse_signed_float (const GLubyte
** inst
, struct arb_program
*Program
)
850 GLint sign
= parse_sign (inst
);
851 GLfloat value
= parse_float (inst
, Program
);
856 * This picks out a constant value from the parsed array. The constant vector is r
857 * returned in the *values array, which should be of length 4.
859 * \param values - The 4 component vector with the constant value in it
862 parse_constant (const GLubyte
** inst
, GLfloat
*values
, struct arb_program
*Program
,
865 GLuint components
, i
;
868 switch (*(*inst
)++) {
869 case CONSTANT_SCALAR
:
870 if (use
== GL_TRUE
) {
873 values
[2] = values
[3] = parse_float (inst
, Program
);
878 values
[2] = values
[3] = parse_signed_float (inst
, Program
);
882 case CONSTANT_VECTOR
:
883 values
[0] = values
[1] = values
[2] = 0;
885 components
= *(*inst
)++;
886 for (i
= 0; i
< components
; i
++) {
887 values
[i
] = parse_signed_float (inst
, Program
);
894 * \param offset The offset from the address register that we should
897 * \return 0 on sucess, 1 on error
900 parse_relative_offset(GLcontext
*ctx
, const GLubyte
**inst
,
901 struct arb_program
*Program
, GLint
*offset
)
904 *offset
= parse_integer(inst
, Program
);
909 * \param color 0 if color type is primary, 1 if color type is secondary
910 * \return 0 on sucess, 1 on error
913 parse_color_type (GLcontext
* ctx
, const GLubyte
** inst
, struct arb_program
*Program
,
916 (void) ctx
; (void) Program
;
917 *color
= *(*inst
)++ != COLOR_PRIMARY
;
922 * Get an integer corresponding to a generic vertex attribute.
924 * \return 0 on sucess, 1 on error
927 parse_generic_attrib_num(GLcontext
*ctx
, const GLubyte
** inst
,
928 struct arb_program
*Program
, GLuint
*attrib
)
930 GLint i
= parse_integer(inst
, Program
);
932 if ((i
< 0) || (i
>= MAX_VERTEX_PROGRAM_ATTRIBS
))
934 program_error(ctx
, Program
->Position
,
935 "Invalid generic vertex attribute index");
939 *attrib
= (GLuint
) i
;
946 * \param color The index of the color buffer to write into
947 * \return 0 on sucess, 1 on error
950 parse_output_color_num (GLcontext
* ctx
, const GLubyte
** inst
,
951 struct arb_program
*Program
, GLuint
* color
)
953 GLint i
= parse_integer (inst
, Program
);
955 if ((i
< 0) || (i
>= (int)ctx
->Const
.MaxDrawBuffers
)) {
956 program_error(ctx
, Program
->Position
, "Invalid draw buffer index");
966 * \param coord The texture unit index
967 * \return 0 on sucess, 1 on error
970 parse_texcoord_num (GLcontext
* ctx
, const GLubyte
** inst
,
971 struct arb_program
*Program
, GLuint
* coord
)
973 GLint i
= parse_integer (inst
, Program
);
975 if ((i
< 0) || (i
>= (int)ctx
->Const
.MaxTextureUnits
)) {
976 program_error(ctx
, Program
->Position
, "Invalid texture unit index");
985 * \param coord The weight index
986 * \return 0 on sucess, 1 on error
989 parse_weight_num (GLcontext
* ctx
, const GLubyte
** inst
, struct arb_program
*Program
,
992 *coord
= parse_integer (inst
, Program
);
994 if ((*coord
< 0) || (*coord
>= 1)) {
995 program_error(ctx
, Program
->Position
, "Invalid weight index");
1003 * \param coord The clip plane index
1004 * \return 0 on sucess, 1 on error
1007 parse_clipplane_num (GLcontext
* ctx
, const GLubyte
** inst
,
1008 struct arb_program
*Program
, GLint
* coord
)
1010 *coord
= parse_integer (inst
, Program
);
1012 if ((*coord
< 0) || (*coord
>= (GLint
) ctx
->Const
.MaxClipPlanes
)) {
1013 program_error(ctx
, Program
->Position
, "Invalid clip plane index");
1022 * \return 0 on front face, 1 on back face
1025 parse_face_type (const GLubyte
** inst
)
1027 switch (*(*inst
)++) {
1039 * Given a matrix and a modifier token on the binary array, return tokens
1040 * that _mesa_fetch_state() [program.c] can understand.
1042 * \param matrix - the matrix we are talking about
1043 * \param matrix_idx - the index of the matrix we have (for texture & program matricies)
1044 * \param matrix_modifier - the matrix modifier (trans, inv, etc)
1045 * \return 0 on sucess, 1 on failure
1048 parse_matrix (GLcontext
* ctx
, const GLubyte
** inst
, struct arb_program
*Program
,
1049 GLint
* matrix
, GLint
* matrix_idx
, GLint
* matrix_modifier
)
1051 GLubyte mat
= *(*inst
)++;
1056 case MATRIX_MODELVIEW
:
1057 *matrix
= STATE_MODELVIEW_MATRIX
;
1058 *matrix_idx
= parse_integer (inst
, Program
);
1059 if (*matrix_idx
> 0) {
1060 program_error(ctx
, Program
->Position
,
1061 "ARB_vertex_blend not supported");
1066 case MATRIX_PROJECTION
:
1067 *matrix
= STATE_PROJECTION_MATRIX
;
1071 *matrix
= STATE_MVP_MATRIX
;
1074 case MATRIX_TEXTURE
:
1075 *matrix
= STATE_TEXTURE_MATRIX
;
1076 *matrix_idx
= parse_integer (inst
, Program
);
1077 if (*matrix_idx
>= (GLint
) ctx
->Const
.MaxTextureUnits
) {
1078 program_error(ctx
, Program
->Position
, "Invalid Texture Unit");
1079 /* bad *matrix_id */
1084 /* This is not currently supported (ARB_matrix_palette) */
1085 case MATRIX_PALETTE
:
1086 *matrix_idx
= parse_integer (inst
, Program
);
1087 program_error(ctx
, Program
->Position
,
1088 "ARB_matrix_palette not supported");
1092 case MATRIX_PROGRAM
:
1093 *matrix
= STATE_PROGRAM_MATRIX
;
1094 *matrix_idx
= parse_integer (inst
, Program
);
1095 if (*matrix_idx
>= (GLint
) ctx
->Const
.MaxProgramMatrices
) {
1096 program_error(ctx
, Program
->Position
, "Invalid Program Matrix");
1097 /* bad *matrix_idx */
1103 switch (*(*inst
)++) {
1104 case MATRIX_MODIFIER_IDENTITY
:
1105 *matrix_modifier
= 0;
1107 case MATRIX_MODIFIER_INVERSE
:
1108 *matrix_modifier
= STATE_MATRIX_INVERSE
;
1110 case MATRIX_MODIFIER_TRANSPOSE
:
1111 *matrix_modifier
= STATE_MATRIX_TRANSPOSE
;
1113 case MATRIX_MODIFIER_INVTRANS
:
1114 *matrix_modifier
= STATE_MATRIX_INVTRANS
;
1123 * This parses a state string (rather, the binary version of it) into
1124 * a 6-token sequence as described in _mesa_fetch_state() [program.c]
1126 * \param inst - the start in the binary arry to start working from
1127 * \param state_tokens - the storage for the 6-token state description
1128 * \return - 0 on sucess, 1 on error
1131 parse_state_single_item (GLcontext
* ctx
, const GLubyte
** inst
,
1132 struct arb_program
*Program
,
1133 gl_state_index state_tokens
[STATE_LENGTH
])
1135 GLubyte token
= *(*inst
)++;
1138 case STATE_MATERIAL_PARSER
:
1139 state_tokens
[0] = STATE_MATERIAL
;
1140 state_tokens
[1] = parse_face_type (inst
);
1141 switch (*(*inst
)++) {
1142 case MATERIAL_AMBIENT
:
1143 state_tokens
[2] = STATE_AMBIENT
;
1145 case MATERIAL_DIFFUSE
:
1146 state_tokens
[2] = STATE_DIFFUSE
;
1148 case MATERIAL_SPECULAR
:
1149 state_tokens
[2] = STATE_SPECULAR
;
1151 case MATERIAL_EMISSION
:
1152 state_tokens
[2] = STATE_EMISSION
;
1154 case MATERIAL_SHININESS
:
1155 state_tokens
[2] = STATE_SHININESS
;
1160 case STATE_LIGHT_PARSER
:
1161 state_tokens
[0] = STATE_LIGHT
;
1162 state_tokens
[1] = parse_integer (inst
, Program
);
1164 /* Check the value of state_tokens[1] against the # of lights */
1165 if (state_tokens
[1] >= (GLint
) ctx
->Const
.MaxLights
) {
1166 program_error(ctx
, Program
->Position
, "Invalid Light Number");
1167 /* bad state_tokens[1] */
1171 switch (*(*inst
)++) {
1173 state_tokens
[2] = STATE_AMBIENT
;
1176 state_tokens
[2] = STATE_DIFFUSE
;
1178 case LIGHT_SPECULAR
:
1179 state_tokens
[2] = STATE_SPECULAR
;
1181 case LIGHT_POSITION
:
1182 state_tokens
[2] = STATE_POSITION
;
1184 case LIGHT_ATTENUATION
:
1185 state_tokens
[2] = STATE_ATTENUATION
;
1188 state_tokens
[2] = STATE_HALF_VECTOR
;
1190 case LIGHT_SPOT_DIRECTION
:
1191 state_tokens
[2] = STATE_SPOT_DIRECTION
;
1196 case STATE_LIGHT_MODEL
:
1197 switch (*(*inst
)++) {
1198 case LIGHT_MODEL_AMBIENT
:
1199 state_tokens
[0] = STATE_LIGHTMODEL_AMBIENT
;
1201 case LIGHT_MODEL_SCENECOLOR
:
1202 state_tokens
[0] = STATE_LIGHTMODEL_SCENECOLOR
;
1203 state_tokens
[1] = parse_face_type (inst
);
1208 case STATE_LIGHT_PROD
:
1209 state_tokens
[0] = STATE_LIGHTPROD
;
1210 state_tokens
[1] = parse_integer (inst
, Program
);
1212 /* Check the value of state_tokens[1] against the # of lights */
1213 if (state_tokens
[1] >= (GLint
) ctx
->Const
.MaxLights
) {
1214 program_error(ctx
, Program
->Position
, "Invalid Light Number");
1215 /* bad state_tokens[1] */
1219 state_tokens
[2] = parse_face_type (inst
);
1220 switch (*(*inst
)++) {
1221 case LIGHT_PROD_AMBIENT
:
1222 state_tokens
[3] = STATE_AMBIENT
;
1224 case LIGHT_PROD_DIFFUSE
:
1225 state_tokens
[3] = STATE_DIFFUSE
;
1227 case LIGHT_PROD_SPECULAR
:
1228 state_tokens
[3] = STATE_SPECULAR
;
1235 switch (*(*inst
)++) {
1237 state_tokens
[0] = STATE_FOG_COLOR
;
1240 state_tokens
[0] = STATE_FOG_PARAMS
;
1246 state_tokens
[1] = parse_integer (inst
, Program
);
1247 switch (*(*inst
)++) {
1249 state_tokens
[0] = STATE_TEXENV_COLOR
;
1258 state_tokens
[0] = STATE_TEXGEN
;
1259 /*state_tokens[1] = parse_integer (inst, Program);*/ /* Texture Unit */
1261 if (parse_texcoord_num (ctx
, inst
, Program
, &coord
))
1263 state_tokens
[1] = coord
;
1268 /* 0 - s, 1 - t, 2 - r, 3 - q */
1271 if (type
== TEX_GEN_EYE
) {
1274 state_tokens
[2] = STATE_TEXGEN_EYE_S
;
1277 state_tokens
[2] = STATE_TEXGEN_EYE_T
;
1280 state_tokens
[2] = STATE_TEXGEN_EYE_R
;
1283 state_tokens
[2] = STATE_TEXGEN_EYE_Q
;
1286 _mesa_problem(ctx
, "bad texgen component in "
1287 "parse_state_single_item()");
1293 state_tokens
[2] = STATE_TEXGEN_OBJECT_S
;
1296 state_tokens
[2] = STATE_TEXGEN_OBJECT_T
;
1299 state_tokens
[2] = STATE_TEXGEN_OBJECT_R
;
1302 state_tokens
[2] = STATE_TEXGEN_OBJECT_Q
;
1305 _mesa_problem(ctx
, "bad texgen component in "
1306 "parse_state_single_item()");
1313 switch (*(*inst
)++) {
1315 state_tokens
[0] = STATE_DEPTH_RANGE
;
1320 case STATE_CLIP_PLANE
:
1321 state_tokens
[0] = STATE_CLIPPLANE
;
1322 if (parse_clipplane_num (ctx
, inst
, Program
,
1323 (GLint
*) &state_tokens
[1]))
1328 switch (*(*inst
)++) {
1330 state_tokens
[0] = STATE_POINT_SIZE
;
1333 case POINT_ATTENUATION
:
1334 state_tokens
[0] = STATE_POINT_ATTENUATION
;
1339 /* XXX: I think this is the correct format for a matrix row */
1340 case STATE_MATRIX_ROWS
:
1341 if (parse_matrix(ctx
, inst
, Program
,
1342 (GLint
*) &state_tokens
[0],
1343 (GLint
*) &state_tokens
[1],
1344 (GLint
*) &state_tokens
[4]))
1347 state_tokens
[2] = parse_integer (inst
, Program
); /* The first row to grab */
1349 if ((**inst
) != 0) { /* Either the last row, 0 */
1350 state_tokens
[3] = parse_integer (inst
, Program
);
1351 if (state_tokens
[3] < state_tokens
[2]) {
1352 program_error(ctx
, Program
->Position
,
1353 "Second matrix index less than the first");
1354 /* state_tokens[4] vs. state_tokens[3] */
1359 state_tokens
[3] = state_tokens
[2];
1369 * This parses a state string (rather, the binary version of it) into
1370 * a 6-token similar for the state fetching code in program.c
1372 * One might ask, why fetch these parameters into just like you fetch
1373 * state when they are already stored in other places?
1375 * Because of array offsets -> We can stick env/local parameters in the
1376 * middle of a parameter array and then index someplace into the array
1379 * One optimization might be to only do this for the cases where the
1380 * env/local parameters end up inside of an array, and leave the
1381 * single parameters (or arrays of pure env/local pareameters) in their
1382 * respective register files.
1384 * For ENV parameters, the format is:
1385 * state_tokens[0] = STATE_FRAGMENT_PROGRAM / STATE_VERTEX_PROGRAM
1386 * state_tokens[1] = STATE_ENV
1387 * state_tokens[2] = the parameter index
1389 * for LOCAL parameters, the format is:
1390 * state_tokens[0] = STATE_FRAGMENT_PROGRAM / STATE_VERTEX_PROGRAM
1391 * state_tokens[1] = STATE_LOCAL
1392 * state_tokens[2] = the parameter index
1394 * \param inst - the start in the binary arry to start working from
1395 * \param state_tokens - the storage for the 6-token state description
1396 * \return - 0 on sucess, 1 on failure
1399 parse_program_single_item (GLcontext
* ctx
, const GLubyte
** inst
,
1400 struct arb_program
*Program
,
1401 gl_state_index state_tokens
[STATE_LENGTH
])
1403 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
)
1404 state_tokens
[0] = STATE_FRAGMENT_PROGRAM
;
1406 state_tokens
[0] = STATE_VERTEX_PROGRAM
;
1409 switch (*(*inst
)++) {
1410 case PROGRAM_PARAM_ENV
:
1411 state_tokens
[1] = STATE_ENV
;
1412 state_tokens
[2] = parse_integer (inst
, Program
);
1414 /* Check state_tokens[2] against the number of ENV parameters available */
1415 if (((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) &&
1416 (state_tokens
[2] >= (GLint
) ctx
->Const
.FragmentProgram
.MaxEnvParams
))
1418 ((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
) &&
1419 (state_tokens
[2] >= (GLint
) ctx
->Const
.VertexProgram
.MaxEnvParams
))) {
1420 program_error(ctx
, Program
->Position
,
1421 "Invalid Program Env Parameter");
1422 /* bad state_tokens[2] */
1428 case PROGRAM_PARAM_LOCAL
:
1429 state_tokens
[1] = STATE_LOCAL
;
1430 state_tokens
[2] = parse_integer (inst
, Program
);
1432 /* Check state_tokens[2] against the number of LOCAL parameters available */
1433 if (((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) &&
1434 (state_tokens
[2] >= (GLint
) ctx
->Const
.FragmentProgram
.MaxLocalParams
))
1436 ((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
) &&
1437 (state_tokens
[2] >= (GLint
) ctx
->Const
.VertexProgram
.MaxLocalParams
))) {
1438 program_error(ctx
, Program
->Position
,
1439 "Invalid Program Local Parameter");
1440 /* bad state_tokens[2] */
1450 * For ARB_vertex_program, programs are not allowed to use both an explicit
1451 * vertex attribute and a generic vertex attribute corresponding to the same
1452 * state. See section 2.14.3.1 of the GL_ARB_vertex_program spec.
1454 * This will walk our var_cache and make sure that nobody does anything fishy.
1456 * \return 0 on sucess, 1 on error
1459 generic_attrib_check(struct var_cache
*vc_head
)
1462 struct var_cache
*curr
;
1463 GLboolean explicitAttrib
[MAX_VERTEX_PROGRAM_ATTRIBS
],
1464 genericAttrib
[MAX_VERTEX_PROGRAM_ATTRIBS
];
1466 for (a
=0; a
<MAX_VERTEX_PROGRAM_ATTRIBS
; a
++) {
1467 explicitAttrib
[a
] = GL_FALSE
;
1468 genericAttrib
[a
] = GL_FALSE
;
1473 if (curr
->type
== vt_attrib
) {
1474 if (curr
->attrib_is_generic
)
1475 genericAttrib
[ curr
->attrib_binding
] = GL_TRUE
;
1477 explicitAttrib
[ curr
->attrib_binding
] = GL_TRUE
;
1483 for (a
=0; a
<MAX_VERTEX_PROGRAM_ATTRIBS
; a
++) {
1484 if ((explicitAttrib
[a
]) && (genericAttrib
[a
]))
1492 * This will handle the binding side of an ATTRIB var declaration
1494 * \param inputReg returns the input register index, one of the
1495 * VERT_ATTRIB_* or FRAG_ATTRIB_* values.
1496 * \return returns 0 on success, 1 on error
1499 parse_attrib_binding(GLcontext
* ctx
, const GLubyte
** inst
,
1500 struct arb_program
*Program
,
1501 GLuint
*inputReg
, GLuint
*is_generic
)
1507 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1508 switch (*(*inst
)++) {
1509 case FRAGMENT_ATTRIB_COLOR
:
1512 err
= parse_color_type (ctx
, inst
, Program
, &coord
);
1513 *inputReg
= FRAG_ATTRIB_COL0
+ coord
;
1516 case FRAGMENT_ATTRIB_TEXCOORD
:
1518 GLuint texcoord
= 0;
1519 err
= parse_texcoord_num (ctx
, inst
, Program
, &texcoord
);
1520 *inputReg
= FRAG_ATTRIB_TEX0
+ texcoord
;
1523 case FRAGMENT_ATTRIB_FOGCOORD
:
1524 *inputReg
= FRAG_ATTRIB_FOGC
;
1526 case FRAGMENT_ATTRIB_POSITION
:
1527 *inputReg
= FRAG_ATTRIB_WPOS
;
1535 switch (*(*inst
)++) {
1536 case VERTEX_ATTRIB_POSITION
:
1537 *inputReg
= VERT_ATTRIB_POS
;
1540 case VERTEX_ATTRIB_WEIGHT
:
1543 err
= parse_weight_num (ctx
, inst
, Program
, &weight
);
1544 *inputReg
= VERT_ATTRIB_WEIGHT
;
1546 /* hack for Warcraft (see bug 8060) */
1547 _mesa_warning(ctx
, "Application error: vertex program uses 'vertex.weight' but GL_ARB_vertex_blend not supported.");
1550 program_error(ctx
, Program
->Position
,
1551 "ARB_vertex_blend not supported");
1556 case VERTEX_ATTRIB_NORMAL
:
1557 *inputReg
= VERT_ATTRIB_NORMAL
;
1560 case VERTEX_ATTRIB_COLOR
:
1563 err
= parse_color_type (ctx
, inst
, Program
, &color
);
1565 *inputReg
= VERT_ATTRIB_COLOR1
;
1568 *inputReg
= VERT_ATTRIB_COLOR0
;
1573 case VERTEX_ATTRIB_FOGCOORD
:
1574 *inputReg
= VERT_ATTRIB_FOG
;
1577 case VERTEX_ATTRIB_TEXCOORD
:
1580 err
= parse_texcoord_num (ctx
, inst
, Program
, &unit
);
1581 *inputReg
= VERT_ATTRIB_TEX0
+ unit
;
1585 case VERTEX_ATTRIB_MATRIXINDEX
:
1586 /* Not supported at this time */
1588 const char *msg
= "ARB_palette_matrix not supported";
1589 parse_integer (inst
, Program
);
1590 program_error(ctx
, Program
->Position
, msg
);
1594 case VERTEX_ATTRIB_GENERIC
:
1597 err
= parse_generic_attrib_num(ctx
, inst
, Program
, &attrib
);
1600 /* Add VERT_ATTRIB_GENERIC0 here because ARB_vertex_program's
1601 * attributes do not alias the conventional vertex
1605 *inputReg
= attrib
+ VERT_ATTRIB_GENERIC0
;
1619 program_error(ctx
, Program
->Position
, "Bad attribute binding");
1627 * This translates between a binary token for an output variable type
1628 * and the mesa token for the same thing.
1630 * \param inst The parsed tokens
1631 * \param outputReg Returned index/number of the output register,
1632 * one of the VERT_RESULT_* or FRAG_RESULT_* values.
1635 parse_result_binding(GLcontext
*ctx
, const GLubyte
**inst
,
1636 GLuint
*outputReg
, struct arb_program
*Program
)
1638 const GLubyte token
= *(*inst
)++;
1641 case FRAGMENT_RESULT_COLOR
:
1642 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1645 /* This gets result of the color buffer we're supposed to
1646 * draw into. This pertains to GL_ARB_draw_buffers.
1648 parse_output_color_num(ctx
, inst
, Program
, &out_color
);
1649 ASSERT(out_color
< MAX_DRAW_BUFFERS
);
1650 *outputReg
= FRAG_RESULT_COLR
;
1653 /* for vtx programs, this is VERTEX_RESULT_POSITION */
1654 *outputReg
= VERT_RESULT_HPOS
;
1658 case FRAGMENT_RESULT_DEPTH
:
1659 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1660 /* for frag programs, this is FRAGMENT_RESULT_DEPTH */
1661 *outputReg
= FRAG_RESULT_DEPR
;
1664 /* for vtx programs, this is VERTEX_RESULT_COLOR */
1666 GLuint face_type
= parse_face_type(inst
);
1667 GLint err
= parse_color_type(ctx
, inst
, Program
, &color_type
);
1674 *outputReg
= VERT_RESULT_BFC1
; /* secondary color */
1677 *outputReg
= VERT_RESULT_BFC0
; /* primary color */
1683 *outputReg
= VERT_RESULT_COL1
; /* secondary color */
1687 *outputReg
= VERT_RESULT_COL0
; /* primary color */
1693 case VERTEX_RESULT_FOGCOORD
:
1694 *outputReg
= VERT_RESULT_FOGC
;
1697 case VERTEX_RESULT_POINTSIZE
:
1698 *outputReg
= VERT_RESULT_PSIZ
;
1701 case VERTEX_RESULT_TEXCOORD
:
1704 if (parse_texcoord_num (ctx
, inst
, Program
, &unit
))
1706 *outputReg
= VERT_RESULT_TEX0
+ unit
;
1711 Program
->Base
.OutputsWritten
|= (1 << *outputReg
);
1718 * This handles the declaration of ATTRIB variables
1721 * parse_vert_attrib_binding(), or something like that
1723 * \return 0 on sucess, 1 on error
1726 parse_attrib (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
1727 struct arb_program
*Program
)
1730 struct var_cache
*attrib_var
;
1732 attrib_var
= parse_string (inst
, vc_head
, Program
, &found
);
1733 Program
->Position
= parse_position (inst
);
1735 program_error2(ctx
, Program
->Position
,
1736 "Duplicate variable declaration",
1737 (char *) attrib_var
->name
);
1741 attrib_var
->type
= vt_attrib
;
1743 if (parse_attrib_binding(ctx
, inst
, Program
, &attrib_var
->attrib_binding
,
1744 &attrib_var
->attrib_is_generic
))
1747 if (generic_attrib_check(*vc_head
)) {
1748 program_error(ctx
, Program
->Position
,
1749 "Cannot use both a generic vertex attribute "
1750 "and a specific attribute of the same type");
1754 Program
->Base
.NumAttributes
++;
1759 * \param use -- TRUE if we're called when declaring implicit parameters,
1760 * FALSE if we're declaraing variables. This has to do with
1761 * if we get a signed or unsigned float for scalar constants
1764 parse_param_elements (GLcontext
* ctx
, const GLubyte
** inst
,
1765 struct var_cache
*param_var
,
1766 struct arb_program
*Program
, GLboolean use
)
1770 gl_state_index state_tokens
[STATE_LENGTH
] = {0, 0, 0, 0, 0};
1771 GLfloat const_values
[4];
1773 GLubyte token
= *(*inst
)++;
1776 case PARAM_STATE_ELEMENT
:
1777 if (parse_state_single_item (ctx
, inst
, Program
, state_tokens
))
1780 /* If we adding STATE_MATRIX that has multiple rows, we need to
1781 * unroll it and call _mesa_add_state_reference() for each row
1783 if ((state_tokens
[0] == STATE_MODELVIEW_MATRIX
||
1784 state_tokens
[0] == STATE_PROJECTION_MATRIX
||
1785 state_tokens
[0] == STATE_MVP_MATRIX
||
1786 state_tokens
[0] == STATE_TEXTURE_MATRIX
||
1787 state_tokens
[0] == STATE_PROGRAM_MATRIX
)
1788 && (state_tokens
[2] != state_tokens
[3])) {
1790 const GLint first_row
= state_tokens
[2];
1791 const GLint last_row
= state_tokens
[3];
1793 for (row
= first_row
; row
<= last_row
; row
++) {
1794 state_tokens
[2] = state_tokens
[3] = row
;
1796 idx
= _mesa_add_state_reference(Program
->Base
.Parameters
,
1798 if (param_var
->param_binding_begin
== ~0U)
1799 param_var
->param_binding_begin
= idx
;
1800 param_var
->param_binding_length
++;
1801 Program
->Base
.NumParameters
++;
1805 idx
= _mesa_add_state_reference(Program
->Base
.Parameters
,
1807 if (param_var
->param_binding_begin
== ~0U)
1808 param_var
->param_binding_begin
= idx
;
1809 param_var
->param_binding_length
++;
1810 Program
->Base
.NumParameters
++;
1814 case PARAM_PROGRAM_ELEMENT
:
1815 if (parse_program_single_item (ctx
, inst
, Program
, state_tokens
))
1817 idx
= _mesa_add_state_reference (Program
->Base
.Parameters
, state_tokens
);
1818 if (param_var
->param_binding_begin
== ~0U)
1819 param_var
->param_binding_begin
= idx
;
1820 param_var
->param_binding_length
++;
1821 Program
->Base
.NumParameters
++;
1823 /* Check if there is more: 0 -> we're done, else its an integer */
1825 GLuint out_of_range
, new_idx
;
1826 GLuint start_idx
= state_tokens
[2] + 1;
1827 GLuint end_idx
= parse_integer (inst
, Program
);
1830 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1831 if (((state_tokens
[1] == STATE_ENV
)
1832 && (end_idx
>= ctx
->Const
.FragmentProgram
.MaxEnvParams
))
1833 || ((state_tokens
[1] == STATE_LOCAL
)
1835 ctx
->Const
.FragmentProgram
.MaxLocalParams
)))
1839 if (((state_tokens
[1] == STATE_ENV
)
1840 && (end_idx
>= ctx
->Const
.VertexProgram
.MaxEnvParams
))
1841 || ((state_tokens
[1] == STATE_LOCAL
)
1843 ctx
->Const
.VertexProgram
.MaxLocalParams
)))
1847 program_error(ctx
, Program
->Position
,
1848 "Invalid Program Parameter"); /*end_idx*/
1852 for (new_idx
= start_idx
; new_idx
<= end_idx
; new_idx
++) {
1853 state_tokens
[2] = new_idx
;
1854 idx
= _mesa_add_state_reference(Program
->Base
.Parameters
,
1856 param_var
->param_binding_length
++;
1857 Program
->Base
.NumParameters
++;
1865 case PARAM_CONSTANT
:
1866 /* parsing something like {1.0, 2.0, 3.0, 4.0} */
1867 parse_constant (inst
, const_values
, Program
, use
);
1868 idx
= _mesa_add_named_constant(Program
->Base
.Parameters
,
1869 (char *) param_var
->name
,
1871 if (param_var
->param_binding_begin
== ~0U)
1872 param_var
->param_binding_begin
= idx
;
1873 param_var
->param_binding_type
= PROGRAM_CONSTANT
;
1874 param_var
->param_binding_length
++;
1875 Program
->Base
.NumParameters
++;
1879 program_error(ctx
, Program
->Position
,
1880 "Unexpected token (in parse_param_elements())");
1884 /* Make sure we haven't blown past our parameter limits */
1885 if (((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
) &&
1886 (Program
->Base
.NumParameters
>=
1887 ctx
->Const
.VertexProgram
.MaxLocalParams
))
1888 || ((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
)
1889 && (Program
->Base
.NumParameters
>=
1890 ctx
->Const
.FragmentProgram
.MaxLocalParams
))) {
1891 program_error(ctx
, Program
->Position
, "Too many parameter variables");
1900 * This picks out PARAM program parameter bindings.
1902 * XXX: This needs to be stressed & tested
1904 * \return 0 on sucess, 1 on error
1907 parse_param (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
1908 struct arb_program
*Program
)
1911 GLint specified_length
;
1912 struct var_cache
*param_var
;
1915 param_var
= parse_string (inst
, vc_head
, Program
, &found
);
1916 Program
->Position
= parse_position (inst
);
1919 program_error2(ctx
, Program
->Position
,
1920 "Duplicate variable declaration",
1921 (char *) param_var
->name
);
1925 specified_length
= parse_integer (inst
, Program
);
1927 if (specified_length
< 0) {
1928 program_error(ctx
, Program
->Position
, "Negative parameter array length");
1932 param_var
->type
= vt_param
;
1933 param_var
->param_binding_length
= 0;
1935 /* Right now, everything is shoved into the main state register file.
1937 * In the future, it would be nice to leave things ENV/LOCAL params
1938 * in their respective register files, if possible
1940 param_var
->param_binding_type
= PROGRAM_STATE_VAR
;
1943 * * - add each guy to the parameter list
1944 * * - increment the param_var->param_binding_len
1945 * * - store the param_var->param_binding_begin for the first one
1946 * * - compare the actual len to the specified len at the end
1948 while (**inst
!= PARAM_NULL
) {
1949 if (parse_param_elements (ctx
, inst
, param_var
, Program
, GL_FALSE
))
1953 /* Test array length here! */
1954 if (specified_length
) {
1955 if (specified_length
!= (int)param_var
->param_binding_length
) {
1956 program_error(ctx
, Program
->Position
,
1957 "Declared parameter array length does not match parameter list");
1970 parse_param_use (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
1971 struct arb_program
*Program
, struct var_cache
**new_var
)
1973 struct var_cache
*param_var
;
1975 /* First, insert a dummy entry into the var_cache */
1976 var_cache_create (¶m_var
);
1977 param_var
->name
= (const GLubyte
*) " ";
1978 param_var
->type
= vt_param
;
1980 param_var
->param_binding_length
= 0;
1981 /* Don't fill in binding_begin; We use the default value of -1
1982 * to tell if its already initialized, elsewhere.
1984 * param_var->param_binding_begin = 0;
1986 param_var
->param_binding_type
= PROGRAM_STATE_VAR
;
1988 var_cache_append (vc_head
, param_var
);
1990 /* Then fill it with juicy parameter goodness */
1991 if (parse_param_elements (ctx
, inst
, param_var
, Program
, GL_TRUE
))
1994 *new_var
= param_var
;
2001 * This handles the declaration of TEMP variables
2003 * \return 0 on sucess, 1 on error
2006 parse_temp (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2007 struct arb_program
*Program
)
2010 struct var_cache
*temp_var
;
2012 while (**inst
!= 0) {
2013 temp_var
= parse_string (inst
, vc_head
, Program
, &found
);
2014 Program
->Position
= parse_position (inst
);
2016 program_error2(ctx
, Program
->Position
,
2017 "Duplicate variable declaration",
2018 (char *) temp_var
->name
);
2022 temp_var
->type
= vt_temp
;
2024 if (((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) &&
2025 (Program
->Base
.NumTemporaries
>=
2026 ctx
->Const
.FragmentProgram
.MaxTemps
))
2027 || ((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
)
2028 && (Program
->Base
.NumTemporaries
>=
2029 ctx
->Const
.VertexProgram
.MaxTemps
))) {
2030 program_error(ctx
, Program
->Position
,
2031 "Too many TEMP variables declared");
2035 temp_var
->temp_binding
= Program
->Base
.NumTemporaries
;
2036 Program
->Base
.NumTemporaries
++;
2044 * This handles variables of the OUTPUT variety
2046 * \return 0 on sucess, 1 on error
2049 parse_output (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2050 struct arb_program
*Program
)
2053 struct var_cache
*output_var
;
2056 output_var
= parse_string (inst
, vc_head
, Program
, &found
);
2057 Program
->Position
= parse_position (inst
);
2059 program_error2(ctx
, Program
->Position
,
2060 "Duplicate variable declaration",
2061 (char *) output_var
->name
);
2065 output_var
->type
= vt_output
;
2067 err
= parse_result_binding(ctx
, inst
, &output_var
->output_binding
, Program
);
2072 * This handles variables of the ALIAS kind
2074 * \return 0 on sucess, 1 on error
2077 parse_alias (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2078 struct arb_program
*Program
)
2081 struct var_cache
*temp_var
;
2083 temp_var
= parse_string (inst
, vc_head
, Program
, &found
);
2084 Program
->Position
= parse_position (inst
);
2087 program_error2(ctx
, Program
->Position
,
2088 "Duplicate variable declaration",
2089 (char *) temp_var
->name
);
2093 temp_var
->type
= vt_alias
;
2094 temp_var
->alias_binding
= parse_string (inst
, vc_head
, Program
, &found
);
2095 Program
->Position
= parse_position (inst
);
2099 program_error2(ctx
, Program
->Position
,
2100 "Undefined alias value",
2101 (char *) temp_var
->alias_binding
->name
);
2109 * This handles variables of the ADDRESS kind
2111 * \return 0 on sucess, 1 on error
2114 parse_address (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2115 struct arb_program
*Program
)
2118 struct var_cache
*temp_var
;
2120 while (**inst
!= 0) {
2121 temp_var
= parse_string (inst
, vc_head
, Program
, &found
);
2122 Program
->Position
= parse_position (inst
);
2124 program_error2(ctx
, Program
->Position
,
2125 "Duplicate variable declaration",
2126 (char *) temp_var
->name
);
2130 temp_var
->type
= vt_address
;
2132 if (Program
->Base
.NumAddressRegs
>=
2133 ctx
->Const
.VertexProgram
.MaxAddressRegs
) {
2134 const char *msg
= "Too many ADDRESS variables declared";
2135 program_error(ctx
, Program
->Position
, msg
);
2139 temp_var
->address_binding
= Program
->Base
.NumAddressRegs
;
2140 Program
->Base
.NumAddressRegs
++;
2148 * Parse a program declaration
2150 * \return 0 on sucess, 1 on error
2153 parse_declaration (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2154 struct arb_program
*Program
)
2158 switch (*(*inst
)++) {
2160 err
= parse_address (ctx
, inst
, vc_head
, Program
);
2164 err
= parse_alias (ctx
, inst
, vc_head
, Program
);
2168 err
= parse_attrib (ctx
, inst
, vc_head
, Program
);
2172 err
= parse_output (ctx
, inst
, vc_head
, Program
);
2176 err
= parse_param (ctx
, inst
, vc_head
, Program
);
2180 err
= parse_temp (ctx
, inst
, vc_head
, Program
);
2188 * Handle the parsing out of a masked destination register, either for a
2189 * vertex or fragment program.
2191 * If we are a vertex program, make sure we don't write to
2192 * result.position if we have specified that the program is
2193 * position invariant
2195 * \param File - The register file we write to
2196 * \param Index - The register index we write to
2197 * \param WriteMask - The mask controlling which components we write (1->write)
2199 * \return 0 on sucess, 1 on error
2202 parse_masked_dst_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2203 struct var_cache
**vc_head
, struct arb_program
*Program
,
2204 enum register_file
*File
, GLuint
*Index
, GLint
*WriteMask
)
2207 struct var_cache
*dst
;
2209 /* We either have a result register specified, or a
2210 * variable that may or may not be writable
2212 switch (*(*inst
)++) {
2213 case REGISTER_RESULT
:
2214 if (parse_result_binding(ctx
, inst
, Index
, Program
))
2216 *File
= PROGRAM_OUTPUT
;
2219 case REGISTER_ESTABLISHED_NAME
:
2220 dst
= parse_string (inst
, vc_head
, Program
, &result
);
2221 Program
->Position
= parse_position (inst
);
2223 /* If the name has never been added to our symbol table, we're hosed */
2225 program_error(ctx
, Program
->Position
, "0: Undefined variable");
2229 switch (dst
->type
) {
2231 *File
= PROGRAM_OUTPUT
;
2232 *Index
= dst
->output_binding
;
2236 *File
= PROGRAM_TEMPORARY
;
2237 *Index
= dst
->temp_binding
;
2240 /* If the var type is not vt_output or vt_temp, no go */
2242 program_error(ctx
, Program
->Position
,
2243 "Destination register is read only");
2249 program_error(ctx
, Program
->Position
,
2250 "Unexpected opcode in parse_masked_dst_reg()");
2255 /* Position invariance test */
2256 /* This test is done now in syntax portion - when position invariance OPTION
2257 is specified, "result.position" rule is disabled so there is no way
2258 to write the position
2260 /*if ((Program->HintPositionInvariant) && (*File == PROGRAM_OUTPUT) &&
2262 program_error(ctx, Program->Position,
2263 "Vertex program specified position invariance and wrote vertex position");
2266 /* And then the mask.
2272 * ==> Need to reverse the order of bits for this!
2274 tmp
= (GLint
) *(*inst
)++;
2275 *WriteMask
= (((tmp
>>3) & 0x1) |
2285 * Handle the parsing of a address register
2287 * \param Index - The register index we write to
2289 * \return 0 on sucess, 1 on error
2292 parse_address_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2293 struct var_cache
**vc_head
,
2294 struct arb_program
*Program
, GLint
* Index
)
2296 struct var_cache
*dst
;
2299 *Index
= 0; /* XXX */
2301 dst
= parse_string (inst
, vc_head
, Program
, &result
);
2302 Program
->Position
= parse_position (inst
);
2304 /* If the name has never been added to our symbol table, we're hosed */
2306 program_error(ctx
, Program
->Position
, "Undefined variable");
2310 if (dst
->type
!= vt_address
) {
2311 program_error(ctx
, Program
->Position
, "Variable is not of type ADDRESS");
2320 * Handle the parsing out of a masked address register
2322 * \param Index - The register index we write to
2323 * \param WriteMask - The mask controlling which components we write (1->write)
2325 * \return 0 on sucess, 1 on error
2328 parse_masked_address_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2329 struct var_cache
**vc_head
,
2330 struct arb_program
*Program
, GLint
* Index
,
2331 GLboolean
* WriteMask
)
2333 if (parse_address_reg (ctx
, inst
, vc_head
, Program
, Index
))
2336 /* This should be 0x8 */
2339 /* Writemask of .x is implied */
2341 WriteMask
[1] = WriteMask
[2] = WriteMask
[3] = 0;
2348 * Parse out a swizzle mask.
2350 * Basically convert COMPONENT_X/Y/Z/W to SWIZZLE_X/Y/Z/W
2352 * The len parameter allows us to grab 4 components for a vector
2353 * swizzle, or just 1 component for a scalar src register selection
2356 parse_swizzle_mask(const GLubyte
** inst
, GLubyte
*swizzle
, GLint len
)
2360 for (i
= 0; i
< 4; i
++)
2363 for (i
= 0; i
< len
; i
++) {
2364 switch (*(*inst
)++) {
2366 swizzle
[i
] = SWIZZLE_X
;
2369 swizzle
[i
] = SWIZZLE_Y
;
2372 swizzle
[i
] = SWIZZLE_Z
;
2375 swizzle
[i
] = SWIZZLE_W
;
2378 _mesa_problem(NULL
, "bad component in parse_swizzle_mask()");
2386 * Parse an extended swizzle mask which is a sequence of
2387 * four x/y/z/w/0/1 tokens.
2388 * \return swizzle four swizzle values
2389 * \return negateMask four element bitfield
2392 parse_extended_swizzle_mask(const GLubyte
**inst
, GLubyte swizzle
[4],
2393 GLubyte
*negateMask
)
2398 for (i
= 0; i
< 4; i
++) {
2400 if (parse_sign(inst
) == -1)
2401 *negateMask
|= (1 << i
);
2407 swizzle
[i
] = SWIZZLE_ZERO
;
2410 swizzle
[i
] = SWIZZLE_ONE
;
2413 swizzle
[i
] = SWIZZLE_X
;
2416 swizzle
[i
] = SWIZZLE_Y
;
2419 swizzle
[i
] = SWIZZLE_Z
;
2422 swizzle
[i
] = SWIZZLE_W
;
2425 _mesa_problem(NULL
, "bad case in parse_extended_swizzle_mask()");
2433 parse_src_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2434 struct var_cache
**vc_head
,
2435 struct arb_program
*Program
,
2436 enum register_file
* File
, GLint
* Index
,
2437 GLboolean
*IsRelOffset
)
2439 struct var_cache
*src
;
2440 GLuint binding
, is_generic
, found
;
2445 /* And the binding for the src */
2446 switch (*(*inst
)++) {
2447 case REGISTER_ATTRIB
:
2448 if (parse_attrib_binding
2449 (ctx
, inst
, Program
, &binding
, &is_generic
))
2451 *File
= PROGRAM_INPUT
;
2454 /* We need to insert a dummy variable into the var_cache so we can
2455 * catch generic vertex attrib aliasing errors
2457 var_cache_create(&src
);
2458 src
->type
= vt_attrib
;
2459 src
->name
= (const GLubyte
*) "Dummy Attrib Variable";
2460 src
->attrib_binding
= binding
;
2461 src
->attrib_is_generic
= is_generic
;
2462 var_cache_append(vc_head
, src
);
2463 if (generic_attrib_check(*vc_head
)) {
2464 program_error(ctx
, Program
->Position
,
2465 "Cannot use both a generic vertex attribute "
2466 "and a specific attribute of the same type");
2471 case REGISTER_PARAM
:
2473 case PARAM_ARRAY_ELEMENT
:
2475 src
= parse_string (inst
, vc_head
, Program
, &found
);
2476 Program
->Position
= parse_position (inst
);
2479 program_error2(ctx
, Program
->Position
,
2480 "Undefined variable",
2481 (char *) src
->name
);
2485 *File
= (enum register_file
) src
->param_binding_type
;
2487 switch (*(*inst
)++) {
2488 case ARRAY_INDEX_ABSOLUTE
:
2489 offset
= parse_integer (inst
, Program
);
2492 || (offset
>= (int)src
->param_binding_length
)) {
2493 program_error(ctx
, Program
->Position
,
2494 "Index out of range");
2495 /* offset, src->name */
2499 *Index
= src
->param_binding_begin
+ offset
;
2502 case ARRAY_INDEX_RELATIVE
:
2504 GLint addr_reg_idx
, rel_off
;
2506 /* First, grab the address regiseter */
2507 if (parse_address_reg (ctx
, inst
, vc_head
, Program
, &addr_reg_idx
))
2516 /* Then the relative offset */
2517 if (parse_relative_offset(ctx
, inst
, Program
, &rel_off
)) return 1;
2519 /* And store it properly */
2520 *Index
= src
->param_binding_begin
+ rel_off
;
2528 if (parse_param_use (ctx
, inst
, vc_head
, Program
, &src
))
2531 *File
= (enum register_file
) src
->param_binding_type
;
2532 *Index
= src
->param_binding_begin
;
2537 case REGISTER_ESTABLISHED_NAME
:
2538 src
= parse_string (inst
, vc_head
, Program
, &found
);
2539 Program
->Position
= parse_position (inst
);
2541 /* If the name has never been added to our symbol table, we're hosed */
2543 program_error(ctx
, Program
->Position
,
2544 "3: Undefined variable"); /* src->name */
2548 switch (src
->type
) {
2550 *File
= PROGRAM_INPUT
;
2551 *Index
= src
->attrib_binding
;
2554 /* XXX: We have to handle offsets someplace in here! -- or are those above? */
2556 *File
= (enum register_file
) src
->param_binding_type
;
2557 *Index
= src
->param_binding_begin
;
2561 *File
= PROGRAM_TEMPORARY
;
2562 *Index
= src
->temp_binding
;
2565 /* If the var type is vt_output no go */
2567 program_error(ctx
, Program
->Position
,
2568 "destination register is read only");
2575 program_error(ctx
, Program
->Position
,
2576 "Unknown token in parse_src_reg");
2580 /* Add attributes to InputsRead only if they are used the program.
2581 * This avoids the handling of unused ATTRIB declarations in the drivers. */
2582 if (*File
== PROGRAM_INPUT
)
2583 Program
->Base
.InputsRead
|= (1 << *Index
);
2590 * Parse vertex/fragment program vector source register.
2593 parse_vector_src_reg(GLcontext
*ctx
, const GLubyte
**inst
,
2594 struct var_cache
**vc_head
,
2595 struct arb_program
*program
,
2596 struct prog_src_register
*reg
)
2598 enum register_file file
;
2602 GLboolean isRelOffset
;
2605 negateMask
= (parse_sign (inst
) == -1) ? NEGATE_XYZW
: NEGATE_NONE
;
2607 /* And the src reg */
2608 if (parse_src_reg(ctx
, inst
, vc_head
, program
, &file
, &index
, &isRelOffset
))
2611 /* finally, the swizzle */
2612 parse_swizzle_mask(inst
, swizzle
, 4);
2616 reg
->Swizzle
= MAKE_SWIZZLE4(swizzle
[0], swizzle
[1], swizzle
[2], swizzle
[3]);
2617 reg
->NegateBase
= negateMask
;
2618 reg
->RelAddr
= isRelOffset
;
2624 * Parse vertex/fragment program scalar source register.
2627 parse_scalar_src_reg(GLcontext
*ctx
, const GLubyte
**inst
,
2628 struct var_cache
**vc_head
,
2629 struct arb_program
*program
,
2630 struct prog_src_register
*reg
)
2632 enum register_file file
;
2636 GLboolean isRelOffset
;
2639 negateMask
= (parse_sign (inst
) == -1) ? NEGATE_XYZW
: NEGATE_NONE
;
2641 /* And the src reg */
2642 if (parse_src_reg(ctx
, inst
, vc_head
, program
, &file
, &index
, &isRelOffset
))
2645 /* finally, the swizzle */
2646 parse_swizzle_mask(inst
, swizzle
, 1);
2650 reg
->Swizzle
= (swizzle
[0] << 0);
2651 reg
->NegateBase
= negateMask
;
2652 reg
->RelAddr
= isRelOffset
;
2658 * Parse vertex/fragment program destination register.
2659 * \return 1 if error, 0 if no error.
2662 parse_dst_reg(GLcontext
* ctx
, const GLubyte
** inst
,
2663 struct var_cache
**vc_head
, struct arb_program
*program
,
2664 struct prog_dst_register
*reg
)
2668 enum register_file file
;
2670 if (parse_masked_dst_reg (ctx
, inst
, vc_head
, program
, &file
, &idx
, &mask
))
2675 reg
->WriteMask
= mask
;
2681 * This is a big mother that handles getting opcodes into the instruction
2682 * and handling the src & dst registers for fragment program instructions
2683 * \return 1 if error, 0 if no error
2686 parse_fp_instruction (GLcontext
* ctx
, const GLubyte
** inst
,
2687 struct var_cache
**vc_head
, struct arb_program
*Program
,
2688 struct prog_instruction
*fp
)
2692 GLubyte instClass
, type
, code
;
2694 GLuint shadow_tex
= 0;
2696 _mesa_init_instructions(fp
, 1);
2698 /* Record the position in the program string for debugging */
2699 fp
->StringPos
= Program
->Position
;
2701 /* OP_ALU_INST or OP_TEX_INST */
2702 instClass
= *(*inst
)++;
2704 /* OP_ALU_{VECTOR, SCALAR, BINSC, BIN, TRI, SWZ},
2705 * OP_TEX_{SAMPLE, KIL}
2709 /* The actual opcode name */
2712 /* Increment the correct count */
2713 switch (instClass
) {
2715 Program
->NumAluInstructions
++;
2718 Program
->NumTexInstructions
++;
2726 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2728 fp
->Opcode
= OPCODE_ABS
;
2732 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2734 fp
->Opcode
= OPCODE_FLR
;
2738 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2740 fp
->Opcode
= OPCODE_FRC
;
2744 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2746 fp
->Opcode
= OPCODE_LIT
;
2750 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2752 fp
->Opcode
= OPCODE_MOV
;
2756 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2759 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
2766 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2768 fp
->Opcode
= OPCODE_COS
;
2772 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2774 fp
->Opcode
= OPCODE_EX2
;
2778 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2780 fp
->Opcode
= OPCODE_LG2
;
2784 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2786 fp
->Opcode
= OPCODE_RCP
;
2790 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2792 fp
->Opcode
= OPCODE_RSQ
;
2796 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2798 fp
->Opcode
= OPCODE_SIN
;
2802 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2805 fp
->Opcode
= OPCODE_SCS
;
2809 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2812 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
2819 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2821 fp
->Opcode
= OPCODE_POW
;
2825 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2828 for (a
= 0; a
< 2; a
++) {
2829 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[a
]))
2838 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2840 fp
->Opcode
= OPCODE_ADD
;
2844 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2846 fp
->Opcode
= OPCODE_DP3
;
2850 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2852 fp
->Opcode
= OPCODE_DP4
;
2856 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2858 fp
->Opcode
= OPCODE_DPH
;
2862 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2864 fp
->Opcode
= OPCODE_DST
;
2868 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2870 fp
->Opcode
= OPCODE_MAX
;
2874 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2876 fp
->Opcode
= OPCODE_MIN
;
2880 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2882 fp
->Opcode
= OPCODE_MUL
;
2886 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2888 fp
->Opcode
= OPCODE_SGE
;
2892 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2894 fp
->Opcode
= OPCODE_SLT
;
2898 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2900 fp
->Opcode
= OPCODE_SUB
;
2904 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2906 fp
->Opcode
= OPCODE_XPD
;
2910 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2912 for (a
= 0; a
< 2; a
++) {
2913 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[a
]))
2921 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2923 fp
->Opcode
= OPCODE_CMP
;
2927 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2929 fp
->Opcode
= OPCODE_LRP
;
2933 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2935 fp
->Opcode
= OPCODE_MAD
;
2939 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2942 for (a
= 0; a
< 3; a
++) {
2943 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[a
]))
2951 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2953 fp
->Opcode
= OPCODE_SWZ
;
2956 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2962 enum register_file file
;
2965 if (parse_src_reg(ctx
, inst
, vc_head
, Program
, &file
, &index
, &rel
))
2967 parse_extended_swizzle_mask(inst
, swizzle
, &negateMask
);
2968 fp
->SrcReg
[0].File
= file
;
2969 fp
->SrcReg
[0].Index
= index
;
2970 fp
->SrcReg
[0].NegateBase
= negateMask
;
2971 fp
->SrcReg
[0].Swizzle
= MAKE_SWIZZLE4(swizzle
[0],
2981 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2983 fp
->Opcode
= OPCODE_TEX
;
2987 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2989 fp
->Opcode
= OPCODE_TXP
;
2993 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2995 fp
->Opcode
= OPCODE_TXB
;
2999 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
3002 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
3006 if (parse_texcoord_num (ctx
, inst
, Program
, &texcoord
))
3008 fp
->TexSrcUnit
= texcoord
;
3011 switch (*(*inst
)++) {
3012 case TEXTARGET_SHADOW1D
:
3013 shadow_tex
= 1 << texcoord
;
3016 fp
->TexSrcTarget
= TEXTURE_1D_INDEX
;
3018 case TEXTARGET_SHADOW2D
:
3019 shadow_tex
= 1 << texcoord
;
3022 fp
->TexSrcTarget
= TEXTURE_2D_INDEX
;
3025 fp
->TexSrcTarget
= TEXTURE_3D_INDEX
;
3027 case TEXTARGET_SHADOWRECT
:
3028 shadow_tex
= 1 << texcoord
;
3030 case TEXTARGET_RECT
:
3031 fp
->TexSrcTarget
= TEXTURE_RECT_INDEX
;
3033 case TEXTARGET_CUBE
:
3034 fp
->TexSrcTarget
= TEXTURE_CUBE_INDEX
;
3036 case TEXTARGET_SHADOW1D_ARRAY
:
3037 shadow_tex
= 1 << texcoord
;
3039 case TEXTARGET_1D_ARRAY
:
3040 fp
->TexSrcTarget
= TEXTURE_1D_ARRAY_INDEX
;
3042 case TEXTARGET_SHADOW2D_ARRAY
:
3043 shadow_tex
= 1 << texcoord
;
3045 case TEXTARGET_2D_ARRAY
:
3046 fp
->TexSrcTarget
= TEXTURE_2D_ARRAY_INDEX
;
3050 /* Don't test the first time a particular sampler is seen. Each time
3051 * after that, make sure the shadow state is the same.
3053 if ((_mesa_bitcount(Program
->TexturesUsed
[texcoord
]) > 0)
3054 && ((Program
->ShadowSamplers
& (1 << texcoord
)) != shadow_tex
)) {
3055 program_error(ctx
, Program
->Position
,
3056 "texture image unit used for shadow sampling and non-shadow sampling");
3060 Program
->TexturesUsed
[texcoord
] |= (1 << fp
->TexSrcTarget
);
3061 /* Check that both "2D" and "CUBE" (for example) aren't both used */
3062 if (_mesa_bitcount(Program
->TexturesUsed
[texcoord
]) > 1) {
3063 program_error(ctx
, Program
->Position
,
3064 "multiple targets used on one texture image unit");
3069 Program
->ShadowSamplers
|= shadow_tex
;
3073 Program
->UsesKill
= 1;
3074 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
3076 fp
->Opcode
= OPCODE_KIL
;
3079 _mesa_problem(ctx
, "bad type 0x%x in parse_fp_instruction()", type
);
3088 * Handle the parsing out of a masked address register
3090 * \param Index - The register index we write to
3091 * \param WriteMask - The mask controlling which components we write (1->write)
3093 * \return 0 on sucess, 1 on error
3096 parse_vp_address_reg (GLcontext
* ctx
, const GLubyte
** inst
,
3097 struct var_cache
**vc_head
,
3098 struct arb_program
*Program
,
3099 struct prog_dst_register
*reg
)
3103 if (parse_address_reg (ctx
, inst
, vc_head
, Program
, &idx
))
3106 /* This should be 0x8 */
3109 reg
->File
= PROGRAM_ADDRESS
;
3112 /* Writemask of .x is implied */
3113 reg
->WriteMask
= 0x1;
3119 * This is a big mother that handles getting opcodes into the instruction
3120 * and handling the src & dst registers for vertex program instructions
3123 parse_vp_instruction (GLcontext
* ctx
, const GLubyte
** inst
,
3124 struct var_cache
**vc_head
, struct arb_program
*Program
,
3125 struct prog_instruction
*vp
)
3130 /* OP_ALU_{ARL, VECTOR, SCALAR, BINSC, BIN, TRI, SWZ} */
3133 /* The actual opcode name */
3136 _mesa_init_instructions(vp
, 1);
3137 /* Record the position in the program string for debugging */
3138 vp
->StringPos
= Program
->Position
;
3143 vp
->Opcode
= OPCODE_ARL
;
3145 /* Remember to set SrcReg.RelAddr; */
3147 /* Get the masked address register [dst] */
3148 if (parse_vp_address_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3151 vp
->DstReg
.File
= PROGRAM_ADDRESS
;
3153 /* Get a scalar src register */
3154 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[0]))
3162 vp
->Opcode
= OPCODE_ABS
;
3165 vp
->Opcode
= OPCODE_FLR
;
3168 vp
->Opcode
= OPCODE_FRC
;
3171 vp
->Opcode
= OPCODE_LIT
;
3174 vp
->Opcode
= OPCODE_MOV
;
3178 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3181 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[0]))
3188 vp
->Opcode
= OPCODE_EX2
;
3191 vp
->Opcode
= OPCODE_EXP
;
3194 vp
->Opcode
= OPCODE_LG2
;
3197 vp
->Opcode
= OPCODE_LOG
;
3200 vp
->Opcode
= OPCODE_RCP
;
3203 vp
->Opcode
= OPCODE_RSQ
;
3206 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3209 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[0]))
3216 vp
->Opcode
= OPCODE_POW
;
3219 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3222 for (a
= 0; a
< 2; a
++) {
3223 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[a
]))
3231 vp
->Opcode
= OPCODE_ADD
;
3234 vp
->Opcode
= OPCODE_DP3
;
3237 vp
->Opcode
= OPCODE_DP4
;
3240 vp
->Opcode
= OPCODE_DPH
;
3243 vp
->Opcode
= OPCODE_DST
;
3246 vp
->Opcode
= OPCODE_MAX
;
3249 vp
->Opcode
= OPCODE_MIN
;
3252 vp
->Opcode
= OPCODE_MUL
;
3255 vp
->Opcode
= OPCODE_SGE
;
3258 vp
->Opcode
= OPCODE_SLT
;
3261 vp
->Opcode
= OPCODE_SUB
;
3264 vp
->Opcode
= OPCODE_XPD
;
3267 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3270 for (a
= 0; a
< 2; a
++) {
3271 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[a
]))
3279 vp
->Opcode
= OPCODE_MAD
;
3283 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3286 for (a
= 0; a
< 3; a
++) {
3287 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[a
]))
3295 vp
->Opcode
= OPCODE_SWZ
;
3302 enum register_file file
;
3305 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3308 if (parse_src_reg(ctx
, inst
, vc_head
, Program
, &file
, &index
, &relAddr
))
3310 parse_extended_swizzle_mask (inst
, swizzle
, &negateMask
);
3311 vp
->SrcReg
[0].File
= file
;
3312 vp
->SrcReg
[0].Index
= index
;
3313 vp
->SrcReg
[0].NegateBase
= negateMask
;
3314 vp
->SrcReg
[0].Swizzle
= MAKE_SWIZZLE4(swizzle
[0],
3318 vp
->SrcReg
[0].RelAddr
= relAddr
;
3328 debug_variables (GLcontext
* ctx
, struct var_cache
*vc_head
,
3329 struct arb_program
*Program
)
3331 struct var_cache
*vc
;
3334 fprintf (stderr
, "debug_variables, vc_head: %p\n", (void*) vc_head
);
3336 /* First of all, print out the contents of the var_cache */
3339 fprintf (stderr
, "[%p]\n", (void*) vc
);
3342 fprintf (stderr
, "UNDEFINED %s\n", vc
->name
);
3345 fprintf (stderr
, "ATTRIB %s\n", vc
->name
);
3346 fprintf (stderr
, " binding: 0x%x\n", vc
->attrib_binding
);
3349 fprintf (stderr
, "PARAM %s begin: %d len: %d\n", vc
->name
,
3350 vc
->param_binding_begin
, vc
->param_binding_length
);
3351 b
= vc
->param_binding_begin
;
3352 for (a
= 0; a
< vc
->param_binding_length
; a
++) {
3353 fprintf (stderr
, "%s\n",
3354 Program
->Base
.Parameters
->Parameters
[a
+ b
].Name
);
3355 if (Program
->Base
.Parameters
->Parameters
[a
+ b
].Type
== PROGRAM_STATE_VAR
) {
3357 s
= _mesa_program_state_string(Program
->Base
.Parameters
->Parameters
3358 [a
+ b
].StateIndexes
);
3359 fprintf(stderr
, "%s\n", s
);
3360 _mesa_free((char *) s
);
3363 fprintf (stderr
, "%f %f %f %f\n",
3364 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][0],
3365 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][1],
3366 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][2],
3367 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][3]);
3371 fprintf (stderr
, "TEMP %s\n", vc
->name
);
3372 fprintf (stderr
, " binding: 0x%x\n", vc
->temp_binding
);
3375 fprintf (stderr
, "OUTPUT %s\n", vc
->name
);
3376 fprintf (stderr
, " binding: 0x%x\n", vc
->output_binding
);
3379 fprintf (stderr
, "ALIAS %s\n", vc
->name
);
3380 fprintf (stderr
, " binding: 0x%p (%s)\n",
3381 (void*) vc
->alias_binding
, vc
->alias_binding
->name
);
3391 #endif /* DEBUG_PARSING */
3395 * The main loop for parsing a fragment or vertex program
3397 * \return 1 on error, 0 on success
3400 parse_instructions(GLcontext
* ctx
, const GLubyte
* inst
,
3401 struct var_cache
**vc_head
, struct arb_program
*Program
)
3403 const GLuint maxInst
= (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
)
3404 ? ctx
->Const
.FragmentProgram
.MaxInstructions
3405 : ctx
->Const
.VertexProgram
.MaxInstructions
;
3408 ASSERT(MAX_INSTRUCTIONS
>= maxInst
);
3410 Program
->MajorVersion
= (GLuint
) * inst
++;
3411 Program
->MinorVersion
= (GLuint
) * inst
++;
3413 while (*inst
!= END
) {
3418 case ARB_PRECISION_HINT_FASTEST
:
3419 Program
->PrecisionOption
= GL_FASTEST
;
3422 case ARB_PRECISION_HINT_NICEST
:
3423 Program
->PrecisionOption
= GL_NICEST
;
3427 Program
->FogOption
= GL_EXP
;
3431 Program
->FogOption
= GL_EXP2
;
3434 case ARB_FOG_LINEAR
:
3435 Program
->FogOption
= GL_LINEAR
;
3438 case ARB_POSITION_INVARIANT
:
3439 if (Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
)
3440 Program
->HintPositionInvariant
= GL_TRUE
;
3443 case ARB_FRAGMENT_PROGRAM_SHADOW
:
3444 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
3445 /* TODO ARB_fragment_program_shadow code */
3449 case ARB_DRAW_BUFFERS
:
3450 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
3451 /* do nothing for now */
3455 case MESA_TEXTURE_ARRAY
:
3456 /* do nothing for now */
3463 if (Program
->Base
.NumInstructions
+ 1 >= maxInst
) {
3464 program_error(ctx
, Program
->Position
,
3465 "Max instruction count exceeded");
3468 Program
->Position
= parse_position (&inst
);
3469 /* parse the current instruction */
3470 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
3471 err
= parse_fp_instruction (ctx
, &inst
, vc_head
, Program
,
3472 &Program
->Base
.Instructions
[Program
->Base
.NumInstructions
]);
3475 err
= parse_vp_instruction (ctx
, &inst
, vc_head
, Program
,
3476 &Program
->Base
.Instructions
[Program
->Base
.NumInstructions
]);
3479 /* increment instuction count */
3480 Program
->Base
.NumInstructions
++;
3484 err
= parse_declaration (ctx
, &inst
, vc_head
, Program
);
3495 /* Finally, tag on an OPCODE_END instruction */
3497 const GLuint numInst
= Program
->Base
.NumInstructions
;
3498 _mesa_init_instructions(Program
->Base
.Instructions
+ numInst
, 1);
3499 Program
->Base
.Instructions
[numInst
].Opcode
= OPCODE_END
;
3500 /* YYY Wrong Position in program, whatever, at least not random -> crash
3501 Program->Position = parse_position (&inst);
3503 Program
->Base
.Instructions
[numInst
].StringPos
= Program
->Position
;
3505 Program
->Base
.NumInstructions
++;
3508 * Initialize native counts to logical counts. The device driver may
3509 * change them if program is translated into a hardware program.
3511 Program
->Base
.NumNativeInstructions
= Program
->Base
.NumInstructions
;
3512 Program
->Base
.NumNativeTemporaries
= Program
->Base
.NumTemporaries
;
3513 Program
->Base
.NumNativeParameters
= Program
->Base
.NumParameters
;
3514 Program
->Base
.NumNativeAttributes
= Program
->Base
.NumAttributes
;
3515 Program
->Base
.NumNativeAddressRegs
= Program
->Base
.NumAddressRegs
;
3522 LONGSTRING
static char core_grammar_text
[] =
3523 #include "shader/grammar/grammar_syn.h"
3528 * Set a grammar parameter.
3529 * \param name the grammar parameter
3530 * \param value the new parameter value
3531 * \return 0 if OK, 1 if error
3534 set_reg8 (GLcontext
*ctx
, grammar id
, const char *name
, GLubyte value
)
3536 char error_msg
[300];
3539 if (grammar_set_reg8 (id
, (const byte
*) name
, value
))
3542 grammar_get_last_error ((byte
*) error_msg
, 300, &error_pos
);
3543 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3544 _mesa_error (ctx
, GL_INVALID_OPERATION
, "Grammar Register Error");
3550 * Enable support for the given language option in the parser.
3551 * \return 1 if OK, 0 if error
3554 enable_ext(GLcontext
*ctx
, grammar id
, const char *name
)
3556 return !set_reg8(ctx
, id
, name
, 1);
3561 * Enable parser extensions based on which OpenGL extensions are supported
3562 * by this rendering context.
3564 * \return GL_TRUE if OK, GL_FALSE if error.
3567 enable_parser_extensions(GLcontext
*ctx
, grammar id
)
3570 /* These are not supported at this time */
3571 if ((ctx
->Extensions
.ARB_vertex_blend
||
3572 ctx
->Extensions
.EXT_vertex_weighting
)
3573 && !enable_ext(ctx
, id
, "vertex_blend"))
3575 if (ctx
->Extensions
.ARB_matrix_palette
3576 && !enable_ext(ctx
, id
, "matrix_palette"))
3579 if (ctx
->Extensions
.ARB_fragment_program_shadow
3580 && !enable_ext(ctx
, id
, "fragment_program_shadow"))
3582 if (ctx
->Extensions
.EXT_point_parameters
3583 && !enable_ext(ctx
, id
, "point_parameters"))
3585 if (ctx
->Extensions
.EXT_secondary_color
3586 && !enable_ext(ctx
, id
, "secondary_color"))
3588 if (ctx
->Extensions
.EXT_fog_coord
3589 && !enable_ext(ctx
, id
, "fog_coord"))
3591 if (ctx
->Extensions
.NV_texture_rectangle
3592 && !enable_ext(ctx
, id
, "texture_rectangle"))
3594 if (ctx
->Extensions
.ARB_draw_buffers
3595 && !enable_ext(ctx
, id
, "draw_buffers"))
3597 if (ctx
->Extensions
.MESA_texture_array
3598 && !enable_ext(ctx
, id
, "texture_array"))
3601 /* hack for Warcraft (see bug 8060) */
3602 enable_ext(ctx
, id
, "vertex_blend");
3610 * This kicks everything off.
3612 * \param ctx - The GL Context
3613 * \param str - The program string
3614 * \param len - The program string length
3615 * \param program - The arb_program struct to return all the parsed info in
3616 * \return GL_TRUE on sucess, GL_FALSE on error
3619 _mesa_parse_arb_program(GLcontext
*ctx
, GLenum target
,
3620 const GLubyte
*str
, GLsizei len
,
3621 struct arb_program
*program
)
3623 GLint a
, err
, error_pos
;
3624 char error_msg
[300];
3626 struct var_cache
*vc_head
;
3627 grammar arbprogram_syn_id
;
3628 GLubyte
*parsed
, *inst
;
3629 GLubyte
*strz
= NULL
;
3630 static int arbprogram_syn_is_ok
= 0; /* XXX temporary */
3632 /* set the program target before parsing */
3633 program
->Base
.Target
= target
;
3635 /* Reset error state */
3636 _mesa_set_program_error(ctx
, -1, NULL
);
3638 /* check if arb_grammar_text (arbprogram.syn) is syntactically correct */
3639 if (!arbprogram_syn_is_ok
) {
3640 /* One-time initialization of parsing system */
3641 grammar grammar_syn_id
;
3644 grammar_syn_id
= grammar_load_from_text ((byte
*) core_grammar_text
);
3645 if (grammar_syn_id
== 0) {
3646 grammar_get_last_error ((byte
*) error_msg
, 300, &error_pos
);
3647 /* XXX this is not a GL error - it's an implementation bug! - FIX */
3648 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3649 _mesa_error (ctx
, GL_INVALID_OPERATION
,
3650 "glProgramStringARB(Error loading grammar rule set)");
3654 err
= !grammar_check(grammar_syn_id
, (byte
*) arb_grammar_text
,
3655 &parsed
, &parsed_len
);
3657 /* 'parsed' is unused here */
3658 _mesa_free (parsed
);
3661 /* NOTE: we can't destroy grammar_syn_id right here because
3662 * grammar_destroy() can reset the last error
3665 /* XXX this is not a GL error - it's an implementation bug! - FIX */
3666 grammar_get_last_error ((byte
*) error_msg
, 300, &error_pos
);
3667 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3668 _mesa_error (ctx
, GL_INVALID_OPERATION
,
3669 "glProgramString(Error loading grammar rule set");
3670 grammar_destroy (grammar_syn_id
);
3674 grammar_destroy (grammar_syn_id
);
3676 arbprogram_syn_is_ok
= 1;
3679 /* create the grammar object */
3680 arbprogram_syn_id
= grammar_load_from_text ((byte
*) arb_grammar_text
);
3681 if (arbprogram_syn_id
== 0) {
3682 /* XXX this is not a GL error - it's an implementation bug! - FIX */
3683 grammar_get_last_error ((GLubyte
*) error_msg
, 300, &error_pos
);
3684 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3685 _mesa_error (ctx
, GL_INVALID_OPERATION
,
3686 "glProgramString(Error loading grammer rule set)");
3690 /* Set program_target register value */
3691 if (set_reg8 (ctx
, arbprogram_syn_id
, "program_target",
3692 program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
? 0x10 : 0x20)) {
3693 grammar_destroy (arbprogram_syn_id
);
3697 if (!enable_parser_extensions(ctx
, arbprogram_syn_id
)) {
3698 grammar_destroy(arbprogram_syn_id
);
3702 /* check for NULL character occurences */
3705 for (i
= 0; i
< len
; i
++) {
3706 if (str
[i
] == '\0') {
3707 program_error(ctx
, i
, "illegal character");
3708 grammar_destroy (arbprogram_syn_id
);
3714 /* copy the program string to a null-terminated string */
3715 strz
= (GLubyte
*) _mesa_malloc (len
+ 1);
3717 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glProgramStringARB");
3718 grammar_destroy (arbprogram_syn_id
);
3721 _mesa_memcpy (strz
, str
, len
);
3724 /* do a fast check on program string - initial production buffer is 4K */
3725 err
= !grammar_fast_check(arbprogram_syn_id
, strz
,
3726 &parsed
, &parsed_len
, 0x1000);
3728 /* Syntax parse error */
3730 grammar_get_last_error((GLubyte
*) error_msg
, 300, &error_pos
);
3731 program_error(ctx
, error_pos
, error_msg
);
3734 /* useful for debugging */
3738 fprintf(stderr
, "program: %s\n", (char *) strz
);
3739 fprintf(stderr
, "Error Pos: %d\n", ctx
->Program
.ErrorPos
);
3740 s
= (char *) _mesa_find_line_column(strz
, strz
+ctx
->Program
.ErrorPos
,
3742 fprintf(stderr
, "line %d col %d: %s\n", line
, col
, s
);
3749 grammar_destroy (arbprogram_syn_id
);
3753 grammar_destroy (arbprogram_syn_id
);
3756 * Program string is syntactically correct at this point
3757 * Parse the tokenized version of the program now, generating
3758 * vertex/fragment program instructions.
3761 /* Initialize the arb_program struct */
3762 program
->Base
.String
= strz
;
3763 program
->Base
.Instructions
= _mesa_alloc_instructions(MAX_INSTRUCTIONS
);
3764 program
->Base
.NumInstructions
=
3765 program
->Base
.NumTemporaries
=
3766 program
->Base
.NumParameters
=
3767 program
->Base
.NumAttributes
= program
->Base
.NumAddressRegs
= 0;
3768 program
->Base
.Parameters
= _mesa_new_parameter_list ();
3769 program
->Base
.InputsRead
= 0x0;
3770 program
->Base
.OutputsWritten
= 0x0;
3771 program
->Position
= 0;
3772 program
->MajorVersion
= program
->MinorVersion
= 0;
3773 program
->PrecisionOption
= GL_DONT_CARE
;
3774 program
->FogOption
= GL_NONE
;
3775 program
->HintPositionInvariant
= GL_FALSE
;
3776 for (a
= 0; a
< MAX_TEXTURE_IMAGE_UNITS
; a
++)
3777 program
->TexturesUsed
[a
] = 0x0;
3778 program
->ShadowSamplers
= 0x0;
3779 program
->NumAluInstructions
=
3780 program
->NumTexInstructions
=
3781 program
->NumTexIndirections
= 0;
3782 program
->UsesKill
= 0;
3787 /* Start examining the tokens in the array */
3790 /* Check the grammer rev */
3791 if (*inst
++ != REVISION
) {
3792 program_error (ctx
, 0, "Grammar version mismatch");
3796 /* ignore program target */
3798 err
= parse_instructions(ctx
, inst
, &vc_head
, program
);
3801 /*debug_variables(ctx, vc_head, program); */
3803 /* We're done with the parsed binary array */
3804 var_cache_destroy (&vc_head
);
3806 _mesa_free (parsed
);
3808 /* Reallocate the instruction array from size [MAX_INSTRUCTIONS]
3809 * to size [ap.Base.NumInstructions].
3811 program
->Base
.Instructions
3812 = _mesa_realloc_instructions(program
->Base
.Instructions
,
3814 program
->Base
.NumInstructions
);
3822 _mesa_parse_arb_fragment_program(GLcontext
* ctx
, GLenum target
,
3823 const GLvoid
*str
, GLsizei len
,
3824 struct gl_fragment_program
*program
)
3826 struct arb_program ap
;
3829 ASSERT(target
== GL_FRAGMENT_PROGRAM_ARB
);
3830 if (!_mesa_parse_arb_program(ctx
, target
, (const GLubyte
*) str
, len
, &ap
)) {
3831 /* Error in the program. Just return. */
3835 /* Copy the relevant contents of the arb_program struct into the
3836 * fragment_program struct.
3838 program
->Base
.String
= ap
.Base
.String
;
3839 program
->Base
.NumInstructions
= ap
.Base
.NumInstructions
;
3840 program
->Base
.NumTemporaries
= ap
.Base
.NumTemporaries
;
3841 program
->Base
.NumParameters
= ap
.Base
.NumParameters
;
3842 program
->Base
.NumAttributes
= ap
.Base
.NumAttributes
;
3843 program
->Base
.NumAddressRegs
= ap
.Base
.NumAddressRegs
;
3844 program
->Base
.NumNativeInstructions
= ap
.Base
.NumNativeInstructions
;
3845 program
->Base
.NumNativeTemporaries
= ap
.Base
.NumNativeTemporaries
;
3846 program
->Base
.NumNativeParameters
= ap
.Base
.NumNativeParameters
;
3847 program
->Base
.NumNativeAttributes
= ap
.Base
.NumNativeAttributes
;
3848 program
->Base
.NumNativeAddressRegs
= ap
.Base
.NumNativeAddressRegs
;
3849 program
->Base
.NumAluInstructions
= ap
.Base
.NumAluInstructions
;
3850 program
->Base
.NumTexInstructions
= ap
.Base
.NumTexInstructions
;
3851 program
->Base
.NumTexIndirections
= ap
.Base
.NumTexIndirections
;
3852 program
->Base
.NumNativeAluInstructions
= ap
.Base
.NumAluInstructions
;
3853 program
->Base
.NumNativeTexInstructions
= ap
.Base
.NumTexInstructions
;
3854 program
->Base
.NumNativeTexIndirections
= ap
.Base
.NumTexIndirections
;
3855 program
->Base
.InputsRead
= ap
.Base
.InputsRead
;
3856 program
->Base
.OutputsWritten
= ap
.Base
.OutputsWritten
;
3857 for (i
= 0; i
< MAX_TEXTURE_IMAGE_UNITS
; i
++) {
3858 program
->Base
.TexturesUsed
[i
] = ap
.TexturesUsed
[i
];
3859 if (ap
.TexturesUsed
[i
])
3860 program
->Base
.SamplersUsed
|= (1 << i
);
3862 program
->Base
.ShadowSamplers
= ap
.ShadowSamplers
;
3863 program
->FogOption
= ap
.FogOption
;
3864 program
->UsesKill
= ap
.UsesKill
;
3866 if (program
->FogOption
)
3867 program
->Base
.InputsRead
|= FRAG_BIT_FOGC
;
3869 if (program
->Base
.Instructions
)
3870 _mesa_free(program
->Base
.Instructions
);
3871 program
->Base
.Instructions
= ap
.Base
.Instructions
;
3873 if (program
->Base
.Parameters
)
3874 _mesa_free_parameter_list(program
->Base
.Parameters
);
3875 program
->Base
.Parameters
= ap
.Base
.Parameters
;
3878 _mesa_printf("____________Fragment program %u ________\n", program
->Base
.Id
);
3879 _mesa_print_program(&program
->Base
);
3886 * Parse the vertex program string. If success, update the given
3887 * vertex_program object with the new program. Else, leave the vertex_program
3891 _mesa_parse_arb_vertex_program(GLcontext
*ctx
, GLenum target
,
3892 const GLvoid
*str
, GLsizei len
,
3893 struct gl_vertex_program
*program
)
3895 struct arb_program ap
;
3897 ASSERT(target
== GL_VERTEX_PROGRAM_ARB
);
3899 if (!_mesa_parse_arb_program(ctx
, target
, (const GLubyte
*) str
, len
, &ap
)) {
3900 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glProgramString(bad program)");
3904 /* Copy the relevant contents of the arb_program struct into the
3905 * vertex_program struct.
3907 program
->Base
.String
= ap
.Base
.String
;
3908 program
->Base
.NumInstructions
= ap
.Base
.NumInstructions
;
3909 program
->Base
.NumTemporaries
= ap
.Base
.NumTemporaries
;
3910 program
->Base
.NumParameters
= ap
.Base
.NumParameters
;
3911 program
->Base
.NumAttributes
= ap
.Base
.NumAttributes
;
3912 program
->Base
.NumAddressRegs
= ap
.Base
.NumAddressRegs
;
3913 program
->Base
.NumNativeInstructions
= ap
.Base
.NumNativeInstructions
;
3914 program
->Base
.NumNativeTemporaries
= ap
.Base
.NumNativeTemporaries
;
3915 program
->Base
.NumNativeParameters
= ap
.Base
.NumNativeParameters
;
3916 program
->Base
.NumNativeAttributes
= ap
.Base
.NumNativeAttributes
;
3917 program
->Base
.NumNativeAddressRegs
= ap
.Base
.NumNativeAddressRegs
;
3918 program
->Base
.InputsRead
= ap
.Base
.InputsRead
;
3919 program
->Base
.OutputsWritten
= ap
.Base
.OutputsWritten
;
3920 program
->IsPositionInvariant
= ap
.HintPositionInvariant
;
3922 if (program
->Base
.Instructions
)
3923 _mesa_free(program
->Base
.Instructions
);
3924 program
->Base
.Instructions
= ap
.Base
.Instructions
;
3926 if (program
->Base
.Parameters
)
3927 _mesa_free_parameter_list(program
->Base
.Parameters
);
3928 program
->Base
.Parameters
= ap
.Base
.Parameters
;
3931 _mesa_printf("____________Vertex program %u __________\n", program
->Base
.Id
);
3932 _mesa_print_program(&program
->Base
);