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
34 Notes on program parameters, etc.
36 The instructions we emit will use six kinds of source registers:
38 PROGRAM_INPUT - input registers
39 PROGRAM_TEMPORARY - temp registers
40 PROGRAM_ADDRESS - address/indirect register
41 PROGRAM_SAMPLER - texture sampler
42 PROGRAM_CONSTANT - indexes into program->Parameters, a known constant/literal
43 PROGRAM_STATE_VAR - indexes into program->Parameters, and may actually be:
44 + a state variable, like "state.fog.color", or
45 + a pointer to a "program.local[k]" parameter, or
46 + a pointer to a "program.env[k]" parameter
48 Basically, all the program.local[] and program.env[] values will get mapped
49 into the unified gl_program->Parameters array. This solves the problem of
50 having three separate program parameter arrays.
54 #include "main/glheader.h"
55 #include "main/imports.h"
56 #include "main/context.h"
57 #include "main/macros.h"
58 #include "main/mtypes.h"
59 #include "shader/grammar/grammar_mesa.h"
60 #include "arbprogparse.h"
62 #include "programopt.h"
63 #include "prog_parameter.h"
64 #include "prog_statevars.h"
65 #include "prog_instruction.h"
68 * This is basically a union of the vertex_program and fragment_program
69 * structs that we can use to parse the program into
71 * XXX we can probably get rid of this entirely someday.
75 struct gl_program Base
;
77 GLuint Position
; /* Just used for error reporting while parsing */
81 /* ARB_vertex_progmra options */
82 GLboolean HintPositionInvariant
;
84 /* ARB_fragment_progmra options */
85 GLenum PrecisionOption
; /* GL_DONT_CARE, GL_NICEST or GL_FASTEST */
86 GLenum FogOption
; /* GL_NONE, GL_LINEAR, GL_EXP or GL_EXP2 */
88 /* ARB_fragment_program specifics */
89 GLbitfield TexturesUsed
[MAX_TEXTURE_IMAGE_UNITS
];
90 GLbitfield ShadowSamplers
;
91 GLuint NumAluInstructions
;
92 GLuint NumTexInstructions
;
93 GLuint NumTexIndirections
;
101 * Fragment Program Stuff:
102 * -----------------------------------------------------
104 * - things from Michal's email
106 * + not-overflowing floats (don't use parse_integer..)
107 * + can remove range checking in arbparse.c
109 * - check all limits of number of various variables
112 * - test! test! test!
114 * Vertex Program Stuff:
115 * -----------------------------------------------------
116 * - Optimize param array usage and count limits correctly, see spec,
118 * + Record if an array is reference absolutly or relatively (or both)
119 * + For absolute arrays, store a bitmap of accesses
120 * + For single parameters, store an access flag
121 * + After parsing, make a parameter cleanup and merging pass, where
122 * relative arrays are layed out first, followed by abs arrays, and
123 * finally single state.
124 * + Remap offsets for param src and dst registers
125 * + Now we can properly count parameter usage
127 * - Multiple state binding errors in param arrays (see spec, just before
132 * -----------------------------------------------------
133 * - User clipping planes vs. PositionInvariant
134 * - Is it sufficient to just multiply by the mvp to transform in the
135 * PositionInvariant case? Or do we need something more involved?
137 * - vp_src swizzle is GLubyte, fp_src swizzle is GLuint
138 * - fetch state listed in program_parameters list
139 * + WTF should this go???
140 * + currently in nvvertexec.c and s_nvfragprog.c
142 * - allow for multiple address registers (and fetch address regs properly)
145 * -----------------------------------------------------
146 * - remove any leftover unused grammer.c stuff (dict_ ?)
147 * - fix grammer.c error handling so its not static
148 * - #ifdef around stuff pertaining to extentions
150 * Outstanding Questions:
151 * -----------------------------------------------------
152 * - ARB_matrix_palette / ARB_vertex_blend -- not supported
153 * what gets hacked off because of this:
154 * + VERTEX_ATTRIB_MATRIXINDEX
155 * + VERTEX_ATTRIB_WEIGHT
159 * - When can we fetch env/local params from their own register files, and
160 * when to we have to fetch them into the main state register file?
164 * -----------------------------------------------------
167 /* Changes since moving the file to shader directory
169 2004-III-4 ------------------------------------------------------------
170 - added #include "grammar_mesa.h"
171 - removed grammar specific code part (it resides now in grammar.c)
172 - added GL_ARB_fragment_program_shadow tokens
173 - modified #include "arbparse_syn.h"
174 - major changes inside _mesa_parse_arb_program()
175 - check the program string for '\0' characters
176 - copy the program string to a one-byte-longer location to have
178 - position invariance test (not writing to result.position) moved
182 typedef GLubyte
*production
;
186 * This is the text describing the rules to parse the grammar
188 LONGSTRING
static char arb_grammar_text
[] =
189 #include "arbprogram_syn.h"
193 * These should match up with the values defined in arbprogram.syn
198 - changed and merged V_* and F_* opcode values to OP_*.
199 - added GL_ARB_fragment_program_shadow specific tokens (michal)
201 #define REVISION 0x0a
204 #define FRAGMENT_PROGRAM 0x01
205 #define VERTEX_PROGRAM 0x02
207 /* program section */
209 #define INSTRUCTION 0x02
210 #define DECLARATION 0x03
213 /* GL_ARB_fragment_program option */
214 #define ARB_PRECISION_HINT_FASTEST 0x00
215 #define ARB_PRECISION_HINT_NICEST 0x01
216 #define ARB_FOG_EXP 0x02
217 #define ARB_FOG_EXP2 0x03
218 #define ARB_FOG_LINEAR 0x04
220 /* GL_ARB_vertex_program option */
221 #define ARB_POSITION_INVARIANT 0x05
223 /* GL_ARB_fragment_program_shadow option */
224 #define ARB_FRAGMENT_PROGRAM_SHADOW 0x06
226 /* GL_ARB_draw_buffers option */
227 #define ARB_DRAW_BUFFERS 0x07
229 /* GL_MESA_texture_array option */
230 #define MESA_TEXTURE_ARRAY 0x08
232 /* GL_ARB_fragment_program instruction class */
233 #define OP_ALU_INST 0x00
234 #define OP_TEX_INST 0x01
236 /* GL_ARB_vertex_program instruction class */
239 /* GL_ARB_fragment_program instruction type */
240 #define OP_ALU_VECTOR 0x00
241 #define OP_ALU_SCALAR 0x01
242 #define OP_ALU_BINSC 0x02
243 #define OP_ALU_BIN 0x03
244 #define OP_ALU_TRI 0x04
245 #define OP_ALU_SWZ 0x05
246 #define OP_TEX_SAMPLE 0x06
247 #define OP_TEX_KIL 0x07
249 /* GL_ARB_vertex_program instruction type */
250 #define OP_ALU_ARL 0x08
258 /* GL_ARB_fragment_program instruction code */
260 #define OP_ABS_SAT 0x1B
262 #define OP_FLR_SAT 0x26
264 #define OP_FRC_SAT 0x27
266 #define OP_LIT_SAT 0x2A
268 #define OP_MOV_SAT 0x30
270 #define OP_COS_SAT 0x20
272 #define OP_EX2_SAT 0x25
274 #define OP_LG2_SAT 0x29
276 #define OP_RCP_SAT 0x33
278 #define OP_RSQ_SAT 0x34
280 #define OP_SIN_SAT 0x39
282 #define OP_SCS_SAT 0x36
284 #define OP_POW_SAT 0x32
286 #define OP_ADD_SAT 0x1C
288 #define OP_DP3_SAT 0x21
290 #define OP_DP4_SAT 0x22
292 #define OP_DPH_SAT 0x23
294 #define OP_DST_SAT 0x24
296 #define OP_MAX_SAT 0x2E
298 #define OP_MIN_SAT 0x2F
300 #define OP_MUL_SAT 0x31
302 #define OP_SGE_SAT 0x37
304 #define OP_SLT_SAT 0x3A
306 #define OP_SUB_SAT 0x3B
308 #define OP_XPD_SAT 0x43
310 #define OP_CMP_SAT 0x1E
312 #define OP_LRP_SAT 0x2C
314 #define OP_MAD_SAT 0x2D
316 #define OP_SWZ_SAT 0x3C
318 #define OP_TEX_SAT 0x3E
320 #define OP_TXB_SAT 0x40
322 #define OP_TXP_SAT 0x42
325 /* GL_ARB_vertex_program instruction code */
354 /* fragment attribute binding */
355 #define FRAGMENT_ATTRIB_COLOR 0x01
356 #define FRAGMENT_ATTRIB_TEXCOORD 0x02
357 #define FRAGMENT_ATTRIB_FOGCOORD 0x03
358 #define FRAGMENT_ATTRIB_POSITION 0x04
360 /* vertex attribute binding */
361 #define VERTEX_ATTRIB_POSITION 0x01
362 #define VERTEX_ATTRIB_WEIGHT 0x02
363 #define VERTEX_ATTRIB_NORMAL 0x03
364 #define VERTEX_ATTRIB_COLOR 0x04
365 #define VERTEX_ATTRIB_FOGCOORD 0x05
366 #define VERTEX_ATTRIB_TEXCOORD 0x06
367 #define VERTEX_ATTRIB_MATRIXINDEX 0x07
368 #define VERTEX_ATTRIB_GENERIC 0x08
370 /* fragment result binding */
371 #define FRAGMENT_RESULT_COLOR 0x01
372 #define FRAGMENT_RESULT_DEPTH 0x02
374 /* vertex result binding */
375 #define VERTEX_RESULT_POSITION 0x01
376 #define VERTEX_RESULT_COLOR 0x02
377 #define VERTEX_RESULT_FOGCOORD 0x03
378 #define VERTEX_RESULT_POINTSIZE 0x04
379 #define VERTEX_RESULT_TEXCOORD 0x05
382 #define TEXTARGET_1D 0x01
383 #define TEXTARGET_2D 0x02
384 #define TEXTARGET_3D 0x03
385 #define TEXTARGET_RECT 0x04
386 #define TEXTARGET_CUBE 0x05
387 /* GL_ARB_fragment_program_shadow */
388 #define TEXTARGET_SHADOW1D 0x06
389 #define TEXTARGET_SHADOW2D 0x07
390 #define TEXTARGET_SHADOWRECT 0x08
391 /* GL_MESA_texture_array */
392 #define TEXTARGET_1D_ARRAY 0x09
393 #define TEXTARGET_2D_ARRAY 0x0a
394 #define TEXTARGET_SHADOW1D_ARRAY 0x0b
395 #define TEXTARGET_SHADOW2D_ARRAY 0x0c
398 #define FACE_FRONT 0x00
399 #define FACE_BACK 0x01
402 #define COLOR_PRIMARY 0x00
403 #define COLOR_SECONDARY 0x01
406 #define COMPONENT_X 0x00
407 #define COMPONENT_Y 0x01
408 #define COMPONENT_Z 0x02
409 #define COMPONENT_W 0x03
410 #define COMPONENT_0 0x04
411 #define COMPONENT_1 0x05
413 /* array index type */
414 #define ARRAY_INDEX_ABSOLUTE 0x00
415 #define ARRAY_INDEX_RELATIVE 0x01
418 #define MATRIX_MODELVIEW 0x01
419 #define MATRIX_PROJECTION 0x02
420 #define MATRIX_MVP 0x03
421 #define MATRIX_TEXTURE 0x04
422 #define MATRIX_PALETTE 0x05
423 #define MATRIX_PROGRAM 0x06
425 /* matrix modifier */
426 #define MATRIX_MODIFIER_IDENTITY 0x00
427 #define MATRIX_MODIFIER_INVERSE 0x01
428 #define MATRIX_MODIFIER_TRANSPOSE 0x02
429 #define MATRIX_MODIFIER_INVTRANS 0x03
432 #define CONSTANT_SCALAR 0x01
433 #define CONSTANT_VECTOR 0x02
435 /* program param type */
436 #define PROGRAM_PARAM_ENV 0x01
437 #define PROGRAM_PARAM_LOCAL 0x02
440 #define REGISTER_ATTRIB 0x01
441 #define REGISTER_PARAM 0x02
442 #define REGISTER_RESULT 0x03
443 #define REGISTER_ESTABLISHED_NAME 0x04
446 #define PARAM_NULL 0x00
447 #define PARAM_ARRAY_ELEMENT 0x01
448 #define PARAM_STATE_ELEMENT 0x02
449 #define PARAM_PROGRAM_ELEMENT 0x03
450 #define PARAM_PROGRAM_ELEMENTS 0x04
451 #define PARAM_CONSTANT 0x05
453 /* param state property */
454 #define STATE_MATERIAL_PARSER 0x01
455 #define STATE_LIGHT_PARSER 0x02
456 #define STATE_LIGHT_MODEL 0x03
457 #define STATE_LIGHT_PROD 0x04
458 #define STATE_FOG 0x05
459 #define STATE_MATRIX_ROWS 0x06
460 /* GL_ARB_fragment_program */
461 #define STATE_TEX_ENV 0x07
462 #define STATE_DEPTH 0x08
463 /* GL_ARB_vertex_program */
464 #define STATE_TEX_GEN 0x09
465 #define STATE_CLIP_PLANE 0x0A
466 #define STATE_POINT 0x0B
468 /* state material property */
469 #define MATERIAL_AMBIENT 0x01
470 #define MATERIAL_DIFFUSE 0x02
471 #define MATERIAL_SPECULAR 0x03
472 #define MATERIAL_EMISSION 0x04
473 #define MATERIAL_SHININESS 0x05
475 /* state light property */
476 #define LIGHT_AMBIENT 0x01
477 #define LIGHT_DIFFUSE 0x02
478 #define LIGHT_SPECULAR 0x03
479 #define LIGHT_POSITION 0x04
480 #define LIGHT_ATTENUATION 0x05
481 #define LIGHT_HALF 0x06
482 #define LIGHT_SPOT_DIRECTION 0x07
484 /* state light model property */
485 #define LIGHT_MODEL_AMBIENT 0x01
486 #define LIGHT_MODEL_SCENECOLOR 0x02
488 /* state light product property */
489 #define LIGHT_PROD_AMBIENT 0x01
490 #define LIGHT_PROD_DIFFUSE 0x02
491 #define LIGHT_PROD_SPECULAR 0x03
493 /* state texture environment property */
494 #define TEX_ENV_COLOR 0x01
496 /* state texture generation coord property */
497 #define TEX_GEN_EYE 0x01
498 #define TEX_GEN_OBJECT 0x02
500 /* state fog property */
501 #define FOG_COLOR 0x01
502 #define FOG_PARAMS 0x02
504 /* state depth property */
505 #define DEPTH_RANGE 0x01
507 /* state point parameters property */
508 #define POINT_SIZE 0x01
509 #define POINT_ATTENUATION 0x02
517 /* GL_ARB_vertex_program */
520 /*-----------------------------------------------------------------------
521 * From here on down is the semantic checking portion
526 * Variable Table Handling functions
541 * Setting an explicit field for each of the binding properties is a bit
542 * wasteful of space, but it should be much more clear when reading later on..
546 const GLubyte
*name
; /* don't free() - no need */
548 GLuint address_binding
; /* The index of the address register we should
550 GLuint attrib_binding
; /* For type vt_attrib, see nvfragprog.h for values */
551 GLuint attrib_is_generic
; /* If the attrib was specified through a generic
553 GLuint temp_binding
; /* The index of the temp register we are to use */
554 GLuint output_binding
; /* Output/result register number */
555 struct var_cache
*alias_binding
; /* For type vt_alias, points to the var_cache entry
556 * that this is aliased to */
557 GLuint param_binding_type
; /* {PROGRAM_STATE_VAR, PROGRAM_LOCAL_PARAM,
558 * PROGRAM_ENV_PARAM} */
559 GLuint param_binding_begin
; /* This is the offset into the program_parameter_list where
560 * the tokens representing our bound state (or constants)
562 GLuint param_binding_length
; /* This is how many entries in the the program_parameter_list
563 * we take up with our state tokens or constants. Note that
564 * this is _not_ the same as the number of param registers
565 * we eventually use */
566 struct var_cache
*next
;
570 var_cache_create (struct var_cache
**va
)
572 *va
= (struct var_cache
*) _mesa_malloc (sizeof (struct var_cache
));
575 (**va
).type
= vt_none
;
576 (**va
).attrib_binding
= ~0;
577 (**va
).attrib_is_generic
= 0;
578 (**va
).temp_binding
= ~0;
579 (**va
).output_binding
= ~0;
580 (**va
).param_binding_type
= ~0;
581 (**va
).param_binding_begin
= ~0;
582 (**va
).param_binding_length
= ~0;
583 (**va
).alias_binding
= NULL
;
589 var_cache_destroy (struct var_cache
**va
)
592 var_cache_destroy (&(**va
).next
);
599 var_cache_append (struct var_cache
**va
, struct var_cache
*nv
)
602 var_cache_append (&(**va
).next
, nv
);
607 static struct var_cache
*
608 var_cache_find (struct var_cache
*va
, const GLubyte
* name
)
610 /*struct var_cache *first = va;*/
613 if (!_mesa_strcmp ( (const char*) name
, (const char*) va
->name
)) {
614 if (va
->type
== vt_alias
)
615 return va
->alias_binding
;
628 * Called when an error is detected while parsing/compiling a program.
629 * Sets the ctx->Program.ErrorString field to descript and records a
630 * GL_INVALID_OPERATION error.
631 * \param position position of error in program string
632 * \param descrip verbose error description
635 program_error(GLcontext
*ctx
, GLint position
, const char *descrip
)
638 const char *prefix
= "glProgramString(", *suffix
= ")";
639 char *str
= (char *) _mesa_malloc(_mesa_strlen(descrip
) +
640 _mesa_strlen(prefix
) +
641 _mesa_strlen(suffix
) + 1);
643 _mesa_sprintf(str
, "%s%s%s", prefix
, descrip
, suffix
);
644 _mesa_error(ctx
, GL_INVALID_OPERATION
, str
);
648 _mesa_set_program_error(ctx
, position
, descrip
);
653 * As above, but with an extra string parameter for more info.
656 program_error2(GLcontext
*ctx
, GLint position
, const char *descrip
,
660 const char *prefix
= "glProgramString(", *suffix
= ")";
661 char *str
= (char *) _mesa_malloc(_mesa_strlen(descrip
) +
664 _mesa_strlen(prefix
) +
665 _mesa_strlen(suffix
) + 1);
667 _mesa_sprintf(str
, "%s%s: %s%s", prefix
, descrip
, var
, suffix
);
668 _mesa_error(ctx
, GL_INVALID_OPERATION
, str
);
673 char *str
= (char *) _mesa_malloc(_mesa_strlen(descrip
) +
675 _mesa_strlen(var
) + 1);
677 _mesa_sprintf(str
, "%s: %s", descrip
, var
);
679 _mesa_set_program_error(ctx
, position
, str
);
689 * constructs an integer from 4 GLubytes in LE format
692 parse_position (const GLubyte
** inst
)
696 value
= (GLuint
) (*(*inst
)++);
697 value
+= (GLuint
) (*(*inst
)++) * 0x100;
698 value
+= (GLuint
) (*(*inst
)++) * 0x10000;
699 value
+= (GLuint
) (*(*inst
)++) * 0x1000000;
705 * This will, given a string, lookup the string as a variable name in the
706 * var cache. If the name is found, the var cache node corresponding to the
707 * var name is returned. If it is not found, a new entry is allocated
709 * \param I Points into the binary array where the string identifier begins
710 * \param found 1 if the string was found in the var_cache, 0 if it was allocated
711 * \return The location on the var_cache corresponding the the string starting at I
713 static struct var_cache
*
714 parse_string (const GLubyte
** inst
, struct var_cache
**vc_head
,
715 struct arb_program
*Program
, GLuint
* found
)
717 const GLubyte
*i
= *inst
;
718 struct var_cache
*va
= NULL
;
721 *inst
+= _mesa_strlen ((char *) i
) + 1;
723 va
= var_cache_find (*vc_head
, i
);
731 var_cache_create (&va
);
732 va
->name
= (const GLubyte
*) i
;
734 var_cache_append (vc_head
, va
);
740 parse_string_without_adding (const GLubyte
** inst
, struct arb_program
*Program
)
742 const GLubyte
*i
= *inst
;
745 *inst
+= _mesa_strlen ((char *) i
) + 1;
751 * \return -1 if we parse '-', return 1 otherwise
754 parse_sign (const GLubyte
** inst
)
756 /*return *(*inst)++ != '+'; */
762 else if (**inst
== '+') {
771 * parses and returns signed integer
774 parse_integer (const GLubyte
** inst
, struct arb_program
*Program
)
779 /* check if *inst points to '+' or '-'
780 * if yes, grab the sign and increment *inst
782 sign
= parse_sign (inst
);
784 /* now check if *inst points to 0
785 * if yes, increment the *inst and return the default value
792 /* parse the integer as you normally would do it */
793 value
= _mesa_atoi (parse_string_without_adding (inst
, Program
));
795 /* now, after terminating 0 there is a position
796 * to parse it - parse_position()
798 Program
->Position
= parse_position (inst
);
804 Accumulate this string of digits, and return them as
805 a large integer represented in floating point (for range).
806 If scale is not NULL, also accumulates a power-of-ten
807 integer scale factor that represents the number of digits
811 parse_float_string(const GLubyte
** inst
, struct arb_program
*Program
, GLdouble
*scale
)
813 GLdouble value
= 0.0;
814 GLdouble oscale
= 1.0;
816 if (**inst
== 0) { /* this string of digits is empty-- do nothing */
819 else { /* nonempty string-- parse out the digits */
820 while (**inst
>= '0' && **inst
<= '9') {
821 GLubyte digit
= *((*inst
)++);
822 value
= value
* 10.0 + (GLint
) (digit
- '0');
825 assert(**inst
== 0); /* integer string should end with 0 */
826 (*inst
)++; /* skip over terminating 0 */
827 Program
->Position
= parse_position(inst
); /* skip position (from integer) */
835 Parse an unsigned floating-point number from this stream of tokenized
836 characters. Example floating-point formats supported:
844 parse_float (const GLubyte
** inst
, struct arb_program
*Program
)
847 GLdouble whole
, fraction
, fracScale
= 1.0;
849 whole
= parse_float_string(inst
, Program
, 0);
850 fraction
= parse_float_string(inst
, Program
, &fracScale
);
852 /* Parse signed exponent */
853 exponent
= parse_integer(inst
, Program
); /* This is the exponent */
855 /* Assemble parts of floating-point number: */
856 return (GLfloat
) ((whole
+ fraction
/ fracScale
) *
857 _mesa_pow(10.0, (GLfloat
) exponent
));
864 parse_signed_float (const GLubyte
** inst
, struct arb_program
*Program
)
866 GLint sign
= parse_sign (inst
);
867 GLfloat value
= parse_float (inst
, Program
);
872 * This picks out a constant value from the parsed array. The constant vector is r
873 * returned in the *values array, which should be of length 4.
875 * \param values - The 4 component vector with the constant value in it
878 parse_constant (const GLubyte
** inst
, GLfloat
*values
, struct arb_program
*Program
,
881 GLuint components
, i
;
884 switch (*(*inst
)++) {
885 case CONSTANT_SCALAR
:
886 if (use
== GL_TRUE
) {
889 values
[2] = values
[3] = parse_float (inst
, Program
);
894 values
[2] = values
[3] = parse_signed_float (inst
, Program
);
898 case CONSTANT_VECTOR
:
899 values
[0] = values
[1] = values
[2] = 0;
901 components
= *(*inst
)++;
902 for (i
= 0; i
< components
; i
++) {
903 values
[i
] = parse_signed_float (inst
, Program
);
910 * \param offset The offset from the address register that we should
913 * \return 0 on sucess, 1 on error
916 parse_relative_offset(GLcontext
*ctx
, const GLubyte
**inst
,
917 struct arb_program
*Program
, GLint
*offset
)
920 *offset
= parse_integer(inst
, Program
);
925 * \param color 0 if color type is primary, 1 if color type is secondary
926 * \return 0 on sucess, 1 on error
929 parse_color_type (GLcontext
* ctx
, const GLubyte
** inst
, struct arb_program
*Program
,
932 (void) ctx
; (void) Program
;
933 *color
= *(*inst
)++ != COLOR_PRIMARY
;
938 * Get an integer corresponding to a generic vertex attribute.
940 * \return 0 on sucess, 1 on error
943 parse_generic_attrib_num(GLcontext
*ctx
, const GLubyte
** inst
,
944 struct arb_program
*Program
, GLuint
*attrib
)
946 GLint i
= parse_integer(inst
, Program
);
948 if ((i
< 0) || (i
>= MAX_VERTEX_PROGRAM_ATTRIBS
))
950 program_error(ctx
, Program
->Position
,
951 "Invalid generic vertex attribute index");
955 *attrib
= (GLuint
) i
;
962 * \param color The index of the color buffer to write into
963 * \return 0 on sucess, 1 on error
966 parse_output_color_num (GLcontext
* ctx
, const GLubyte
** inst
,
967 struct arb_program
*Program
, GLuint
* color
)
969 GLint i
= parse_integer (inst
, Program
);
971 if ((i
< 0) || (i
>= (int)ctx
->Const
.MaxDrawBuffers
)) {
972 program_error(ctx
, Program
->Position
, "Invalid draw buffer index");
982 * Validate the index of a texture coordinate
984 * \param coord The texture unit index
985 * \return 0 on sucess, 1 on error
988 parse_texcoord_num (GLcontext
* ctx
, const GLubyte
** inst
,
989 struct arb_program
*Program
, GLuint
* coord
)
991 GLint i
= parse_integer (inst
, Program
);
993 if ((i
< 0) || (i
>= (int)ctx
->Const
.MaxTextureCoordUnits
)) {
994 program_error(ctx
, Program
->Position
, "Invalid texture coordinate index");
1004 * Validate the index of a texture image unit
1006 * \param coord The texture unit index
1007 * \return 0 on sucess, 1 on error
1010 parse_teximage_num (GLcontext
* ctx
, const GLubyte
** inst
,
1011 struct arb_program
*Program
, GLuint
* coord
)
1013 GLint i
= parse_integer (inst
, Program
);
1015 if ((i
< 0) || (i
>= (int)ctx
->Const
.MaxTextureImageUnits
)) {
1016 program_error(ctx
, Program
->Position
, "Invalid texture image index");
1020 *coord
= (GLuint
) i
;
1026 * \param coord The weight index
1027 * \return 0 on sucess, 1 on error
1030 parse_weight_num (GLcontext
* ctx
, const GLubyte
** inst
, struct arb_program
*Program
,
1033 *coord
= parse_integer (inst
, Program
);
1035 if ((*coord
< 0) || (*coord
>= 1)) {
1036 program_error(ctx
, Program
->Position
, "Invalid weight index");
1044 * \param coord The clip plane index
1045 * \return 0 on sucess, 1 on error
1048 parse_clipplane_num (GLcontext
* ctx
, const GLubyte
** inst
,
1049 struct arb_program
*Program
, GLint
* coord
)
1051 *coord
= parse_integer (inst
, Program
);
1053 if ((*coord
< 0) || (*coord
>= (GLint
) ctx
->Const
.MaxClipPlanes
)) {
1054 program_error(ctx
, Program
->Position
, "Invalid clip plane index");
1063 * \return 0 on front face, 1 on back face
1066 parse_face_type (const GLubyte
** inst
)
1068 switch (*(*inst
)++) {
1080 * Given a matrix and a modifier token on the binary array, return tokens
1081 * that _mesa_fetch_state() [program.c] can understand.
1083 * \param matrix - the matrix we are talking about
1084 * \param matrix_idx - the index of the matrix we have (for texture & program matricies)
1085 * \param matrix_modifier - the matrix modifier (trans, inv, etc)
1086 * \return 0 on sucess, 1 on failure
1089 parse_matrix (GLcontext
* ctx
, const GLubyte
** inst
, struct arb_program
*Program
,
1090 GLint
* matrix
, GLint
* matrix_idx
, GLint
* matrix_modifier
)
1092 GLubyte mat
= *(*inst
)++;
1097 case MATRIX_MODELVIEW
:
1098 *matrix
= STATE_MODELVIEW_MATRIX
;
1099 *matrix_idx
= parse_integer (inst
, Program
);
1100 if (*matrix_idx
> 0) {
1101 program_error(ctx
, Program
->Position
,
1102 "ARB_vertex_blend not supported");
1107 case MATRIX_PROJECTION
:
1108 *matrix
= STATE_PROJECTION_MATRIX
;
1112 *matrix
= STATE_MVP_MATRIX
;
1115 case MATRIX_TEXTURE
:
1116 *matrix
= STATE_TEXTURE_MATRIX
;
1117 *matrix_idx
= parse_integer (inst
, Program
);
1118 if (*matrix_idx
>= (GLint
) ctx
->Const
.MaxTextureUnits
) {
1119 program_error(ctx
, Program
->Position
, "Invalid Texture Unit");
1120 /* bad *matrix_id */
1125 /* This is not currently supported (ARB_matrix_palette) */
1126 case MATRIX_PALETTE
:
1127 *matrix_idx
= parse_integer (inst
, Program
);
1128 program_error(ctx
, Program
->Position
,
1129 "ARB_matrix_palette not supported");
1133 case MATRIX_PROGRAM
:
1134 *matrix
= STATE_PROGRAM_MATRIX
;
1135 *matrix_idx
= parse_integer (inst
, Program
);
1136 if (*matrix_idx
>= (GLint
) ctx
->Const
.MaxProgramMatrices
) {
1137 program_error(ctx
, Program
->Position
, "Invalid Program Matrix");
1138 /* bad *matrix_idx */
1144 switch (*(*inst
)++) {
1145 case MATRIX_MODIFIER_IDENTITY
:
1146 *matrix_modifier
= 0;
1148 case MATRIX_MODIFIER_INVERSE
:
1149 *matrix_modifier
= STATE_MATRIX_INVERSE
;
1151 case MATRIX_MODIFIER_TRANSPOSE
:
1152 *matrix_modifier
= STATE_MATRIX_TRANSPOSE
;
1154 case MATRIX_MODIFIER_INVTRANS
:
1155 *matrix_modifier
= STATE_MATRIX_INVTRANS
;
1164 * This parses a state string (rather, the binary version of it) into
1165 * a 6-token sequence as described in _mesa_fetch_state() [program.c]
1167 * \param inst - the start in the binary arry to start working from
1168 * \param state_tokens - the storage for the 6-token state description
1169 * \return - 0 on sucess, 1 on error
1172 parse_state_single_item (GLcontext
* ctx
, const GLubyte
** inst
,
1173 struct arb_program
*Program
,
1174 gl_state_index state_tokens
[STATE_LENGTH
])
1176 GLubyte token
= *(*inst
)++;
1179 case STATE_MATERIAL_PARSER
:
1180 state_tokens
[0] = STATE_MATERIAL
;
1181 state_tokens
[1] = parse_face_type (inst
);
1182 switch (*(*inst
)++) {
1183 case MATERIAL_AMBIENT
:
1184 state_tokens
[2] = STATE_AMBIENT
;
1186 case MATERIAL_DIFFUSE
:
1187 state_tokens
[2] = STATE_DIFFUSE
;
1189 case MATERIAL_SPECULAR
:
1190 state_tokens
[2] = STATE_SPECULAR
;
1192 case MATERIAL_EMISSION
:
1193 state_tokens
[2] = STATE_EMISSION
;
1195 case MATERIAL_SHININESS
:
1196 state_tokens
[2] = STATE_SHININESS
;
1201 case STATE_LIGHT_PARSER
:
1202 state_tokens
[0] = STATE_LIGHT
;
1203 state_tokens
[1] = parse_integer (inst
, Program
);
1205 /* Check the value of state_tokens[1] against the # of lights */
1206 if (state_tokens
[1] >= (GLint
) ctx
->Const
.MaxLights
) {
1207 program_error(ctx
, Program
->Position
, "Invalid Light Number");
1208 /* bad state_tokens[1] */
1212 switch (*(*inst
)++) {
1214 state_tokens
[2] = STATE_AMBIENT
;
1217 state_tokens
[2] = STATE_DIFFUSE
;
1219 case LIGHT_SPECULAR
:
1220 state_tokens
[2] = STATE_SPECULAR
;
1222 case LIGHT_POSITION
:
1223 state_tokens
[2] = STATE_POSITION
;
1225 case LIGHT_ATTENUATION
:
1226 state_tokens
[2] = STATE_ATTENUATION
;
1229 state_tokens
[2] = STATE_HALF_VECTOR
;
1231 case LIGHT_SPOT_DIRECTION
:
1232 state_tokens
[2] = STATE_SPOT_DIRECTION
;
1237 case STATE_LIGHT_MODEL
:
1238 switch (*(*inst
)++) {
1239 case LIGHT_MODEL_AMBIENT
:
1240 state_tokens
[0] = STATE_LIGHTMODEL_AMBIENT
;
1242 case LIGHT_MODEL_SCENECOLOR
:
1243 state_tokens
[0] = STATE_LIGHTMODEL_SCENECOLOR
;
1244 state_tokens
[1] = parse_face_type (inst
);
1249 case STATE_LIGHT_PROD
:
1250 state_tokens
[0] = STATE_LIGHTPROD
;
1251 state_tokens
[1] = parse_integer (inst
, Program
);
1253 /* Check the value of state_tokens[1] against the # of lights */
1254 if (state_tokens
[1] >= (GLint
) ctx
->Const
.MaxLights
) {
1255 program_error(ctx
, Program
->Position
, "Invalid Light Number");
1256 /* bad state_tokens[1] */
1260 state_tokens
[2] = parse_face_type (inst
);
1261 switch (*(*inst
)++) {
1262 case LIGHT_PROD_AMBIENT
:
1263 state_tokens
[3] = STATE_AMBIENT
;
1265 case LIGHT_PROD_DIFFUSE
:
1266 state_tokens
[3] = STATE_DIFFUSE
;
1268 case LIGHT_PROD_SPECULAR
:
1269 state_tokens
[3] = STATE_SPECULAR
;
1276 switch (*(*inst
)++) {
1278 state_tokens
[0] = STATE_FOG_COLOR
;
1281 state_tokens
[0] = STATE_FOG_PARAMS
;
1287 state_tokens
[1] = parse_integer (inst
, Program
);
1288 switch (*(*inst
)++) {
1290 state_tokens
[0] = STATE_TEXENV_COLOR
;
1299 state_tokens
[0] = STATE_TEXGEN
;
1300 /*state_tokens[1] = parse_integer (inst, Program);*/ /* Texture Unit */
1302 if (parse_texcoord_num (ctx
, inst
, Program
, &coord
))
1304 state_tokens
[1] = coord
;
1309 /* 0 - s, 1 - t, 2 - r, 3 - q */
1312 if (type
== TEX_GEN_EYE
) {
1315 state_tokens
[2] = STATE_TEXGEN_EYE_S
;
1318 state_tokens
[2] = STATE_TEXGEN_EYE_T
;
1321 state_tokens
[2] = STATE_TEXGEN_EYE_R
;
1324 state_tokens
[2] = STATE_TEXGEN_EYE_Q
;
1327 _mesa_problem(ctx
, "bad texgen component in "
1328 "parse_state_single_item()");
1334 state_tokens
[2] = STATE_TEXGEN_OBJECT_S
;
1337 state_tokens
[2] = STATE_TEXGEN_OBJECT_T
;
1340 state_tokens
[2] = STATE_TEXGEN_OBJECT_R
;
1343 state_tokens
[2] = STATE_TEXGEN_OBJECT_Q
;
1346 _mesa_problem(ctx
, "bad texgen component in "
1347 "parse_state_single_item()");
1354 switch (*(*inst
)++) {
1356 state_tokens
[0] = STATE_DEPTH_RANGE
;
1361 case STATE_CLIP_PLANE
:
1362 state_tokens
[0] = STATE_CLIPPLANE
;
1363 if (parse_clipplane_num (ctx
, inst
, Program
,
1364 (GLint
*) &state_tokens
[1]))
1369 switch (*(*inst
)++) {
1371 state_tokens
[0] = STATE_POINT_SIZE
;
1374 case POINT_ATTENUATION
:
1375 state_tokens
[0] = STATE_POINT_ATTENUATION
;
1380 /* XXX: I think this is the correct format for a matrix row */
1381 case STATE_MATRIX_ROWS
:
1382 if (parse_matrix(ctx
, inst
, Program
,
1383 (GLint
*) &state_tokens
[0],
1384 (GLint
*) &state_tokens
[1],
1385 (GLint
*) &state_tokens
[4]))
1388 state_tokens
[2] = parse_integer (inst
, Program
); /* The first row to grab */
1390 if ((**inst
) != 0) { /* Either the last row, 0 */
1391 state_tokens
[3] = parse_integer (inst
, Program
);
1392 if (state_tokens
[3] < state_tokens
[2]) {
1393 program_error(ctx
, Program
->Position
,
1394 "Second matrix index less than the first");
1395 /* state_tokens[4] vs. state_tokens[3] */
1400 state_tokens
[3] = state_tokens
[2];
1410 * This parses a state string (rather, the binary version of it) into
1411 * a 6-token similar for the state fetching code in program.c
1413 * One might ask, why fetch these parameters into just like you fetch
1414 * state when they are already stored in other places?
1416 * Because of array offsets -> We can stick env/local parameters in the
1417 * middle of a parameter array and then index someplace into the array
1420 * One optimization might be to only do this for the cases where the
1421 * env/local parameters end up inside of an array, and leave the
1422 * single parameters (or arrays of pure env/local pareameters) in their
1423 * respective register files.
1425 * For ENV parameters, the format is:
1426 * state_tokens[0] = STATE_FRAGMENT_PROGRAM / STATE_VERTEX_PROGRAM
1427 * state_tokens[1] = STATE_ENV
1428 * state_tokens[2] = the parameter index
1430 * for LOCAL parameters, the format is:
1431 * state_tokens[0] = STATE_FRAGMENT_PROGRAM / STATE_VERTEX_PROGRAM
1432 * state_tokens[1] = STATE_LOCAL
1433 * state_tokens[2] = the parameter index
1435 * \param inst - the start in the binary arry to start working from
1436 * \param state_tokens - the storage for the 6-token state description
1437 * \return - 0 on sucess, 1 on failure
1440 parse_program_single_item (GLcontext
* ctx
, const GLubyte
** inst
,
1441 struct arb_program
*Program
,
1442 gl_state_index state_tokens
[STATE_LENGTH
])
1444 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
)
1445 state_tokens
[0] = STATE_FRAGMENT_PROGRAM
;
1447 state_tokens
[0] = STATE_VERTEX_PROGRAM
;
1450 switch (*(*inst
)++) {
1451 case PROGRAM_PARAM_ENV
:
1452 state_tokens
[1] = STATE_ENV
;
1453 state_tokens
[2] = parse_integer (inst
, Program
);
1455 /* Check state_tokens[2] against the number of ENV parameters available */
1456 if (((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) &&
1457 (state_tokens
[2] >= (GLint
) ctx
->Const
.FragmentProgram
.MaxEnvParams
))
1459 ((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
) &&
1460 (state_tokens
[2] >= (GLint
) ctx
->Const
.VertexProgram
.MaxEnvParams
))) {
1461 program_error(ctx
, Program
->Position
,
1462 "Invalid Program Env Parameter");
1463 /* bad state_tokens[2] */
1469 case PROGRAM_PARAM_LOCAL
:
1470 state_tokens
[1] = STATE_LOCAL
;
1471 state_tokens
[2] = parse_integer (inst
, Program
);
1473 /* Check state_tokens[2] against the number of LOCAL parameters available */
1474 if (((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) &&
1475 (state_tokens
[2] >= (GLint
) ctx
->Const
.FragmentProgram
.MaxLocalParams
))
1477 ((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
) &&
1478 (state_tokens
[2] >= (GLint
) ctx
->Const
.VertexProgram
.MaxLocalParams
))) {
1479 program_error(ctx
, Program
->Position
,
1480 "Invalid Program Local Parameter");
1481 /* bad state_tokens[2] */
1491 * For ARB_vertex_program, programs are not allowed to use both an explicit
1492 * vertex attribute and a generic vertex attribute corresponding to the same
1493 * state. See section 2.14.3.1 of the GL_ARB_vertex_program spec.
1495 * This will walk our var_cache and make sure that nobody does anything fishy.
1497 * \return 0 on sucess, 1 on error
1500 generic_attrib_check(struct var_cache
*vc_head
)
1503 struct var_cache
*curr
;
1504 GLboolean explicitAttrib
[MAX_VERTEX_PROGRAM_ATTRIBS
],
1505 genericAttrib
[MAX_VERTEX_PROGRAM_ATTRIBS
];
1507 for (a
=0; a
<MAX_VERTEX_PROGRAM_ATTRIBS
; a
++) {
1508 explicitAttrib
[a
] = GL_FALSE
;
1509 genericAttrib
[a
] = GL_FALSE
;
1514 if (curr
->type
== vt_attrib
) {
1515 if (curr
->attrib_is_generic
)
1516 genericAttrib
[ curr
->attrib_binding
] = GL_TRUE
;
1518 explicitAttrib
[ curr
->attrib_binding
] = GL_TRUE
;
1524 for (a
=0; a
<MAX_VERTEX_PROGRAM_ATTRIBS
; a
++) {
1525 if ((explicitAttrib
[a
]) && (genericAttrib
[a
]))
1533 * This will handle the binding side of an ATTRIB var declaration
1535 * \param inputReg returns the input register index, one of the
1536 * VERT_ATTRIB_* or FRAG_ATTRIB_* values.
1537 * \return returns 0 on success, 1 on error
1540 parse_attrib_binding(GLcontext
* ctx
, const GLubyte
** inst
,
1541 struct arb_program
*Program
,
1542 GLuint
*inputReg
, GLuint
*is_generic
)
1548 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1549 switch (*(*inst
)++) {
1550 case FRAGMENT_ATTRIB_COLOR
:
1553 err
= parse_color_type (ctx
, inst
, Program
, &coord
);
1554 *inputReg
= FRAG_ATTRIB_COL0
+ coord
;
1557 case FRAGMENT_ATTRIB_TEXCOORD
:
1559 GLuint texcoord
= 0;
1560 err
= parse_texcoord_num (ctx
, inst
, Program
, &texcoord
);
1561 *inputReg
= FRAG_ATTRIB_TEX0
+ texcoord
;
1564 case FRAGMENT_ATTRIB_FOGCOORD
:
1565 *inputReg
= FRAG_ATTRIB_FOGC
;
1567 case FRAGMENT_ATTRIB_POSITION
:
1568 *inputReg
= FRAG_ATTRIB_WPOS
;
1576 switch (*(*inst
)++) {
1577 case VERTEX_ATTRIB_POSITION
:
1578 *inputReg
= VERT_ATTRIB_POS
;
1581 case VERTEX_ATTRIB_WEIGHT
:
1584 err
= parse_weight_num (ctx
, inst
, Program
, &weight
);
1585 *inputReg
= VERT_ATTRIB_WEIGHT
;
1587 /* hack for Warcraft (see bug 8060) */
1588 _mesa_warning(ctx
, "Application error: vertex program uses 'vertex.weight' but GL_ARB_vertex_blend not supported.");
1591 program_error(ctx
, Program
->Position
,
1592 "ARB_vertex_blend not supported");
1597 case VERTEX_ATTRIB_NORMAL
:
1598 *inputReg
= VERT_ATTRIB_NORMAL
;
1601 case VERTEX_ATTRIB_COLOR
:
1604 err
= parse_color_type (ctx
, inst
, Program
, &color
);
1606 *inputReg
= VERT_ATTRIB_COLOR1
;
1609 *inputReg
= VERT_ATTRIB_COLOR0
;
1614 case VERTEX_ATTRIB_FOGCOORD
:
1615 *inputReg
= VERT_ATTRIB_FOG
;
1618 case VERTEX_ATTRIB_TEXCOORD
:
1621 err
= parse_texcoord_num (ctx
, inst
, Program
, &unit
);
1622 *inputReg
= VERT_ATTRIB_TEX0
+ unit
;
1626 case VERTEX_ATTRIB_MATRIXINDEX
:
1627 /* Not supported at this time */
1629 const char *msg
= "ARB_palette_matrix not supported";
1630 parse_integer (inst
, Program
);
1631 program_error(ctx
, Program
->Position
, msg
);
1635 case VERTEX_ATTRIB_GENERIC
:
1638 err
= parse_generic_attrib_num(ctx
, inst
, Program
, &attrib
);
1641 /* Add VERT_ATTRIB_GENERIC0 here because ARB_vertex_program's
1642 * attributes do not alias the conventional vertex
1646 *inputReg
= attrib
+ VERT_ATTRIB_GENERIC0
;
1660 program_error(ctx
, Program
->Position
, "Bad attribute binding");
1668 * This translates between a binary token for an output variable type
1669 * and the mesa token for the same thing.
1671 * \param inst The parsed tokens
1672 * \param outputReg Returned index/number of the output register,
1673 * one of the VERT_RESULT_* or FRAG_RESULT_* values.
1676 parse_result_binding(GLcontext
*ctx
, const GLubyte
**inst
,
1677 GLuint
*outputReg
, struct arb_program
*Program
)
1679 const GLubyte token
= *(*inst
)++;
1682 case FRAGMENT_RESULT_COLOR
:
1683 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1686 /* This gets result of the color buffer we're supposed to
1687 * draw into. This pertains to GL_ARB_draw_buffers.
1689 parse_output_color_num(ctx
, inst
, Program
, &out_color
);
1690 ASSERT(out_color
< MAX_DRAW_BUFFERS
);
1691 *outputReg
= FRAG_RESULT_COLR
;
1694 /* for vtx programs, this is VERTEX_RESULT_POSITION */
1695 *outputReg
= VERT_RESULT_HPOS
;
1699 case FRAGMENT_RESULT_DEPTH
:
1700 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1701 /* for frag programs, this is FRAGMENT_RESULT_DEPTH */
1702 *outputReg
= FRAG_RESULT_DEPR
;
1705 /* for vtx programs, this is VERTEX_RESULT_COLOR */
1707 GLuint face_type
= parse_face_type(inst
);
1708 GLint err
= parse_color_type(ctx
, inst
, Program
, &color_type
);
1715 *outputReg
= VERT_RESULT_BFC1
; /* secondary color */
1718 *outputReg
= VERT_RESULT_BFC0
; /* primary color */
1724 *outputReg
= VERT_RESULT_COL1
; /* secondary color */
1728 *outputReg
= VERT_RESULT_COL0
; /* primary color */
1734 case VERTEX_RESULT_FOGCOORD
:
1735 *outputReg
= VERT_RESULT_FOGC
;
1738 case VERTEX_RESULT_POINTSIZE
:
1739 *outputReg
= VERT_RESULT_PSIZ
;
1742 case VERTEX_RESULT_TEXCOORD
:
1745 if (parse_texcoord_num (ctx
, inst
, Program
, &unit
))
1747 *outputReg
= VERT_RESULT_TEX0
+ unit
;
1752 Program
->Base
.OutputsWritten
|= (1 << *outputReg
);
1759 * This handles the declaration of ATTRIB variables
1762 * parse_vert_attrib_binding(), or something like that
1764 * \return 0 on sucess, 1 on error
1767 parse_attrib (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
1768 struct arb_program
*Program
)
1771 struct var_cache
*attrib_var
;
1773 attrib_var
= parse_string (inst
, vc_head
, Program
, &found
);
1774 Program
->Position
= parse_position (inst
);
1776 program_error2(ctx
, Program
->Position
,
1777 "Duplicate variable declaration",
1778 (char *) attrib_var
->name
);
1782 attrib_var
->type
= vt_attrib
;
1784 if (parse_attrib_binding(ctx
, inst
, Program
, &attrib_var
->attrib_binding
,
1785 &attrib_var
->attrib_is_generic
))
1788 if (generic_attrib_check(*vc_head
)) {
1789 program_error(ctx
, Program
->Position
,
1790 "Cannot use both a generic vertex attribute "
1791 "and a specific attribute of the same type");
1795 Program
->Base
.NumAttributes
++;
1800 * \param use -- TRUE if we're called when declaring implicit parameters,
1801 * FALSE if we're declaraing variables. This has to do with
1802 * if we get a signed or unsigned float for scalar constants
1805 parse_param_elements (GLcontext
* ctx
, const GLubyte
** inst
,
1806 struct var_cache
*param_var
,
1807 struct arb_program
*Program
, GLboolean use
)
1811 gl_state_index state_tokens
[STATE_LENGTH
] = {0, 0, 0, 0, 0};
1812 GLfloat const_values
[4];
1814 GLubyte token
= *(*inst
)++;
1817 case PARAM_STATE_ELEMENT
:
1818 if (parse_state_single_item (ctx
, inst
, Program
, state_tokens
))
1821 /* If we adding STATE_MATRIX that has multiple rows, we need to
1822 * unroll it and call _mesa_add_state_reference() for each row
1824 if ((state_tokens
[0] == STATE_MODELVIEW_MATRIX
||
1825 state_tokens
[0] == STATE_PROJECTION_MATRIX
||
1826 state_tokens
[0] == STATE_MVP_MATRIX
||
1827 state_tokens
[0] == STATE_TEXTURE_MATRIX
||
1828 state_tokens
[0] == STATE_PROGRAM_MATRIX
)
1829 && (state_tokens
[2] != state_tokens
[3])) {
1831 const GLint first_row
= state_tokens
[2];
1832 const GLint last_row
= state_tokens
[3];
1834 for (row
= first_row
; row
<= last_row
; row
++) {
1835 state_tokens
[2] = state_tokens
[3] = row
;
1837 idx
= _mesa_add_state_reference(Program
->Base
.Parameters
,
1839 if (param_var
->param_binding_begin
== ~0U)
1840 param_var
->param_binding_begin
= idx
;
1841 param_var
->param_binding_length
++;
1842 Program
->Base
.NumParameters
++;
1846 idx
= _mesa_add_state_reference(Program
->Base
.Parameters
,
1848 if (param_var
->param_binding_begin
== ~0U)
1849 param_var
->param_binding_begin
= idx
;
1850 param_var
->param_binding_length
++;
1851 Program
->Base
.NumParameters
++;
1855 case PARAM_PROGRAM_ELEMENT
:
1856 if (parse_program_single_item (ctx
, inst
, Program
, state_tokens
))
1858 idx
= _mesa_add_state_reference (Program
->Base
.Parameters
, state_tokens
);
1859 if (param_var
->param_binding_begin
== ~0U)
1860 param_var
->param_binding_begin
= idx
;
1861 param_var
->param_binding_length
++;
1862 Program
->Base
.NumParameters
++;
1864 /* Check if there is more: 0 -> we're done, else its an integer */
1866 GLuint out_of_range
, new_idx
;
1867 GLuint start_idx
= state_tokens
[2] + 1;
1868 GLuint end_idx
= parse_integer (inst
, Program
);
1871 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1872 if (((state_tokens
[1] == STATE_ENV
)
1873 && (end_idx
>= ctx
->Const
.FragmentProgram
.MaxEnvParams
))
1874 || ((state_tokens
[1] == STATE_LOCAL
)
1876 ctx
->Const
.FragmentProgram
.MaxLocalParams
)))
1880 if (((state_tokens
[1] == STATE_ENV
)
1881 && (end_idx
>= ctx
->Const
.VertexProgram
.MaxEnvParams
))
1882 || ((state_tokens
[1] == STATE_LOCAL
)
1884 ctx
->Const
.VertexProgram
.MaxLocalParams
)))
1888 program_error(ctx
, Program
->Position
,
1889 "Invalid Program Parameter"); /*end_idx*/
1893 for (new_idx
= start_idx
; new_idx
<= end_idx
; new_idx
++) {
1894 state_tokens
[2] = new_idx
;
1895 idx
= _mesa_add_state_reference(Program
->Base
.Parameters
,
1897 param_var
->param_binding_length
++;
1898 Program
->Base
.NumParameters
++;
1906 case PARAM_CONSTANT
:
1907 /* parsing something like {1.0, 2.0, 3.0, 4.0} */
1908 parse_constant (inst
, const_values
, Program
, use
);
1909 idx
= _mesa_add_named_constant(Program
->Base
.Parameters
,
1910 (char *) param_var
->name
,
1912 if (param_var
->param_binding_begin
== ~0U)
1913 param_var
->param_binding_begin
= idx
;
1914 param_var
->param_binding_type
= PROGRAM_STATE_VAR
;
1915 /* Note: when we reference this parameter in an instruction later,
1916 * we'll check if it's really a constant/immediate and set the
1917 * instruction register type appropriately.
1919 param_var
->param_binding_length
++;
1920 Program
->Base
.NumParameters
++;
1924 program_error(ctx
, Program
->Position
,
1925 "Unexpected token (in parse_param_elements())");
1929 /* Make sure we haven't blown past our parameter limits */
1930 if (((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
) &&
1931 (Program
->Base
.NumParameters
>=
1932 ctx
->Const
.VertexProgram
.MaxLocalParams
))
1933 || ((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
)
1934 && (Program
->Base
.NumParameters
>=
1935 ctx
->Const
.FragmentProgram
.MaxLocalParams
))) {
1936 program_error(ctx
, Program
->Position
, "Too many parameter variables");
1945 * This picks out PARAM program parameter bindings.
1947 * XXX: This needs to be stressed & tested
1949 * \return 0 on sucess, 1 on error
1952 parse_param (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
1953 struct arb_program
*Program
)
1956 GLint specified_length
;
1957 struct var_cache
*param_var
;
1960 param_var
= parse_string (inst
, vc_head
, Program
, &found
);
1961 Program
->Position
= parse_position (inst
);
1964 program_error2(ctx
, Program
->Position
,
1965 "Duplicate variable declaration",
1966 (char *) param_var
->name
);
1970 specified_length
= parse_integer (inst
, Program
);
1972 if (specified_length
< 0) {
1973 program_error(ctx
, Program
->Position
, "Negative parameter array length");
1977 param_var
->type
= vt_param
;
1978 param_var
->param_binding_length
= 0;
1980 /* Right now, everything is shoved into the main state register file.
1982 * In the future, it would be nice to leave things ENV/LOCAL params
1983 * in their respective register files, if possible
1985 param_var
->param_binding_type
= PROGRAM_STATE_VAR
;
1988 * * - add each guy to the parameter list
1989 * * - increment the param_var->param_binding_len
1990 * * - store the param_var->param_binding_begin for the first one
1991 * * - compare the actual len to the specified len at the end
1993 while (**inst
!= PARAM_NULL
) {
1994 if (parse_param_elements (ctx
, inst
, param_var
, Program
, GL_FALSE
))
1998 /* Test array length here! */
1999 if (specified_length
) {
2000 if (specified_length
!= (int)param_var
->param_binding_length
) {
2001 program_error(ctx
, Program
->Position
,
2002 "Declared parameter array length does not match parameter list");
2015 parse_param_use (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2016 struct arb_program
*Program
, struct var_cache
**new_var
)
2018 struct var_cache
*param_var
;
2020 /* First, insert a dummy entry into the var_cache */
2021 var_cache_create (¶m_var
);
2022 param_var
->name
= (const GLubyte
*) " ";
2023 param_var
->type
= vt_param
;
2025 param_var
->param_binding_length
= 0;
2026 /* Don't fill in binding_begin; We use the default value of -1
2027 * to tell if its already initialized, elsewhere.
2029 * param_var->param_binding_begin = 0;
2031 param_var
->param_binding_type
= PROGRAM_STATE_VAR
;
2033 var_cache_append (vc_head
, param_var
);
2035 /* Then fill it with juicy parameter goodness */
2036 if (parse_param_elements (ctx
, inst
, param_var
, Program
, GL_TRUE
))
2039 *new_var
= param_var
;
2046 * This handles the declaration of TEMP variables
2048 * \return 0 on sucess, 1 on error
2051 parse_temp (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2052 struct arb_program
*Program
)
2055 struct var_cache
*temp_var
;
2057 while (**inst
!= 0) {
2058 temp_var
= parse_string (inst
, vc_head
, Program
, &found
);
2059 Program
->Position
= parse_position (inst
);
2061 program_error2(ctx
, Program
->Position
,
2062 "Duplicate variable declaration",
2063 (char *) temp_var
->name
);
2067 temp_var
->type
= vt_temp
;
2069 if (((Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) &&
2070 (Program
->Base
.NumTemporaries
>=
2071 ctx
->Const
.FragmentProgram
.MaxTemps
))
2072 || ((Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
)
2073 && (Program
->Base
.NumTemporaries
>=
2074 ctx
->Const
.VertexProgram
.MaxTemps
))) {
2075 program_error(ctx
, Program
->Position
,
2076 "Too many TEMP variables declared");
2080 temp_var
->temp_binding
= Program
->Base
.NumTemporaries
;
2081 Program
->Base
.NumTemporaries
++;
2089 * This handles variables of the OUTPUT variety
2091 * \return 0 on sucess, 1 on error
2094 parse_output (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2095 struct arb_program
*Program
)
2098 struct var_cache
*output_var
;
2101 output_var
= parse_string (inst
, vc_head
, Program
, &found
);
2102 Program
->Position
= parse_position (inst
);
2104 program_error2(ctx
, Program
->Position
,
2105 "Duplicate variable declaration",
2106 (char *) output_var
->name
);
2110 output_var
->type
= vt_output
;
2112 err
= parse_result_binding(ctx
, inst
, &output_var
->output_binding
, Program
);
2117 * This handles variables of the ALIAS kind
2119 * \return 0 on sucess, 1 on error
2122 parse_alias (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2123 struct arb_program
*Program
)
2126 struct var_cache
*temp_var
;
2128 temp_var
= parse_string (inst
, vc_head
, Program
, &found
);
2129 Program
->Position
= parse_position (inst
);
2132 program_error2(ctx
, Program
->Position
,
2133 "Duplicate variable declaration",
2134 (char *) temp_var
->name
);
2138 temp_var
->type
= vt_alias
;
2139 temp_var
->alias_binding
= parse_string (inst
, vc_head
, Program
, &found
);
2140 Program
->Position
= parse_position (inst
);
2144 program_error2(ctx
, Program
->Position
,
2145 "Undefined alias value",
2146 (char *) temp_var
->alias_binding
->name
);
2154 * This handles variables of the ADDRESS kind
2156 * \return 0 on sucess, 1 on error
2159 parse_address (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2160 struct arb_program
*Program
)
2163 struct var_cache
*temp_var
;
2165 while (**inst
!= 0) {
2166 temp_var
= parse_string (inst
, vc_head
, Program
, &found
);
2167 Program
->Position
= parse_position (inst
);
2169 program_error2(ctx
, Program
->Position
,
2170 "Duplicate variable declaration",
2171 (char *) temp_var
->name
);
2175 temp_var
->type
= vt_address
;
2177 if (Program
->Base
.NumAddressRegs
>=
2178 ctx
->Const
.VertexProgram
.MaxAddressRegs
) {
2179 const char *msg
= "Too many ADDRESS variables declared";
2180 program_error(ctx
, Program
->Position
, msg
);
2184 temp_var
->address_binding
= Program
->Base
.NumAddressRegs
;
2185 Program
->Base
.NumAddressRegs
++;
2193 * Parse a program declaration
2195 * \return 0 on sucess, 1 on error
2198 parse_declaration (GLcontext
* ctx
, const GLubyte
** inst
, struct var_cache
**vc_head
,
2199 struct arb_program
*Program
)
2203 switch (*(*inst
)++) {
2205 err
= parse_address (ctx
, inst
, vc_head
, Program
);
2209 err
= parse_alias (ctx
, inst
, vc_head
, Program
);
2213 err
= parse_attrib (ctx
, inst
, vc_head
, Program
);
2217 err
= parse_output (ctx
, inst
, vc_head
, Program
);
2221 err
= parse_param (ctx
, inst
, vc_head
, Program
);
2225 err
= parse_temp (ctx
, inst
, vc_head
, Program
);
2233 * Handle the parsing out of a masked destination register, either for a
2234 * vertex or fragment program.
2236 * If we are a vertex program, make sure we don't write to
2237 * result.position if we have specified that the program is
2238 * position invariant
2240 * \param File - The register file we write to
2241 * \param Index - The register index we write to
2242 * \param WriteMask - The mask controlling which components we write (1->write)
2244 * \return 0 on sucess, 1 on error
2247 parse_masked_dst_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2248 struct var_cache
**vc_head
, struct arb_program
*Program
,
2249 enum register_file
*File
, GLuint
*Index
, GLint
*WriteMask
)
2252 struct var_cache
*dst
;
2254 /* We either have a result register specified, or a
2255 * variable that may or may not be writable
2257 switch (*(*inst
)++) {
2258 case REGISTER_RESULT
:
2259 if (parse_result_binding(ctx
, inst
, Index
, Program
))
2261 *File
= PROGRAM_OUTPUT
;
2264 case REGISTER_ESTABLISHED_NAME
:
2265 dst
= parse_string (inst
, vc_head
, Program
, &result
);
2266 Program
->Position
= parse_position (inst
);
2268 /* If the name has never been added to our symbol table, we're hosed */
2270 program_error(ctx
, Program
->Position
, "0: Undefined variable");
2274 switch (dst
->type
) {
2276 *File
= PROGRAM_OUTPUT
;
2277 *Index
= dst
->output_binding
;
2281 *File
= PROGRAM_TEMPORARY
;
2282 *Index
= dst
->temp_binding
;
2285 /* If the var type is not vt_output or vt_temp, no go */
2287 program_error(ctx
, Program
->Position
,
2288 "Destination register is read only");
2294 program_error(ctx
, Program
->Position
,
2295 "Unexpected opcode in parse_masked_dst_reg()");
2300 /* Position invariance test */
2301 /* This test is done now in syntax portion - when position invariance OPTION
2302 is specified, "result.position" rule is disabled so there is no way
2303 to write the position
2305 /*if ((Program->HintPositionInvariant) && (*File == PROGRAM_OUTPUT) &&
2307 program_error(ctx, Program->Position,
2308 "Vertex program specified position invariance and wrote vertex position");
2311 /* And then the mask.
2317 * ==> Need to reverse the order of bits for this!
2319 tmp
= (GLint
) *(*inst
)++;
2320 *WriteMask
= (((tmp
>>3) & 0x1) |
2330 * Handle the parsing of a address register
2332 * \param Index - The register index we write to
2334 * \return 0 on sucess, 1 on error
2337 parse_address_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2338 struct var_cache
**vc_head
,
2339 struct arb_program
*Program
, GLint
* Index
)
2341 struct var_cache
*dst
;
2344 *Index
= 0; /* XXX */
2346 dst
= parse_string (inst
, vc_head
, Program
, &result
);
2347 Program
->Position
= parse_position (inst
);
2349 /* If the name has never been added to our symbol table, we're hosed */
2351 program_error(ctx
, Program
->Position
, "Undefined variable");
2355 if (dst
->type
!= vt_address
) {
2356 program_error(ctx
, Program
->Position
, "Variable is not of type ADDRESS");
2365 * Handle the parsing out of a masked address register
2367 * \param Index - The register index we write to
2368 * \param WriteMask - The mask controlling which components we write (1->write)
2370 * \return 0 on sucess, 1 on error
2373 parse_masked_address_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2374 struct var_cache
**vc_head
,
2375 struct arb_program
*Program
, GLint
* Index
,
2376 GLboolean
* WriteMask
)
2378 if (parse_address_reg (ctx
, inst
, vc_head
, Program
, Index
))
2381 /* This should be 0x8 */
2384 /* Writemask of .x is implied */
2386 WriteMask
[1] = WriteMask
[2] = WriteMask
[3] = 0;
2393 * Parse out a swizzle mask.
2395 * Basically convert COMPONENT_X/Y/Z/W to SWIZZLE_X/Y/Z/W
2397 * The len parameter allows us to grab 4 components for a vector
2398 * swizzle, or just 1 component for a scalar src register selection
2401 parse_swizzle_mask(const GLubyte
** inst
, GLubyte
*swizzle
, GLint len
)
2405 for (i
= 0; i
< 4; i
++)
2408 for (i
= 0; i
< len
; i
++) {
2409 switch (*(*inst
)++) {
2411 swizzle
[i
] = SWIZZLE_X
;
2414 swizzle
[i
] = SWIZZLE_Y
;
2417 swizzle
[i
] = SWIZZLE_Z
;
2420 swizzle
[i
] = SWIZZLE_W
;
2423 _mesa_problem(NULL
, "bad component in parse_swizzle_mask()");
2431 * Parse an extended swizzle mask which is a sequence of
2432 * four x/y/z/w/0/1 tokens.
2433 * \return swizzle four swizzle values
2434 * \return negateMask four element bitfield
2437 parse_extended_swizzle_mask(const GLubyte
**inst
, GLubyte swizzle
[4],
2438 GLubyte
*negateMask
)
2443 for (i
= 0; i
< 4; i
++) {
2445 if (parse_sign(inst
) == -1)
2446 *negateMask
|= (1 << i
);
2452 swizzle
[i
] = SWIZZLE_ZERO
;
2455 swizzle
[i
] = SWIZZLE_ONE
;
2458 swizzle
[i
] = SWIZZLE_X
;
2461 swizzle
[i
] = SWIZZLE_Y
;
2464 swizzle
[i
] = SWIZZLE_Z
;
2467 swizzle
[i
] = SWIZZLE_W
;
2470 _mesa_problem(NULL
, "bad case in parse_extended_swizzle_mask()");
2478 parse_src_reg (GLcontext
* ctx
, const GLubyte
** inst
,
2479 struct var_cache
**vc_head
,
2480 struct arb_program
*Program
,
2481 enum register_file
* File
, GLint
* Index
,
2482 GLboolean
*IsRelOffset
)
2484 struct var_cache
*src
;
2485 GLuint binding
, is_generic
, found
;
2490 /* And the binding for the src */
2491 switch (*(*inst
)++) {
2492 case REGISTER_ATTRIB
:
2493 if (parse_attrib_binding
2494 (ctx
, inst
, Program
, &binding
, &is_generic
))
2496 *File
= PROGRAM_INPUT
;
2499 /* We need to insert a dummy variable into the var_cache so we can
2500 * catch generic vertex attrib aliasing errors
2502 var_cache_create(&src
);
2503 src
->type
= vt_attrib
;
2504 src
->name
= (const GLubyte
*) "Dummy Attrib Variable";
2505 src
->attrib_binding
= binding
;
2506 src
->attrib_is_generic
= is_generic
;
2507 var_cache_append(vc_head
, src
);
2508 if (generic_attrib_check(*vc_head
)) {
2509 program_error(ctx
, Program
->Position
,
2510 "Cannot use both a generic vertex attribute "
2511 "and a specific attribute of the same type");
2516 case REGISTER_PARAM
:
2518 case PARAM_ARRAY_ELEMENT
:
2520 src
= parse_string (inst
, vc_head
, Program
, &found
);
2521 Program
->Position
= parse_position (inst
);
2524 program_error2(ctx
, Program
->Position
,
2525 "Undefined variable",
2526 (char *) src
->name
);
2530 *File
= (enum register_file
) src
->param_binding_type
;
2532 switch (*(*inst
)++) {
2533 case ARRAY_INDEX_ABSOLUTE
:
2534 offset
= parse_integer (inst
, Program
);
2537 || (offset
>= (int)src
->param_binding_length
)) {
2538 program_error(ctx
, Program
->Position
,
2539 "Index out of range");
2540 /* offset, src->name */
2544 *Index
= src
->param_binding_begin
+ offset
;
2547 case ARRAY_INDEX_RELATIVE
:
2549 GLint addr_reg_idx
, rel_off
;
2551 /* First, grab the address regiseter */
2552 if (parse_address_reg (ctx
, inst
, vc_head
, Program
, &addr_reg_idx
))
2561 /* Then the relative offset */
2562 if (parse_relative_offset(ctx
, inst
, Program
, &rel_off
)) return 1;
2564 /* And store it properly */
2565 *Index
= src
->param_binding_begin
+ rel_off
;
2573 if (parse_param_use (ctx
, inst
, vc_head
, Program
, &src
))
2576 *File
= (enum register_file
) src
->param_binding_type
;
2577 *Index
= src
->param_binding_begin
;
2582 case REGISTER_ESTABLISHED_NAME
:
2583 src
= parse_string (inst
, vc_head
, Program
, &found
);
2584 Program
->Position
= parse_position (inst
);
2586 /* If the name has never been added to our symbol table, we're hosed */
2588 program_error(ctx
, Program
->Position
,
2589 "3: Undefined variable"); /* src->name */
2593 switch (src
->type
) {
2595 *File
= PROGRAM_INPUT
;
2596 *Index
= src
->attrib_binding
;
2599 /* XXX: We have to handle offsets someplace in here! -- or are those above? */
2601 *File
= (enum register_file
) src
->param_binding_type
;
2602 *Index
= src
->param_binding_begin
;
2606 *File
= PROGRAM_TEMPORARY
;
2607 *Index
= src
->temp_binding
;
2610 /* If the var type is vt_output no go */
2612 program_error(ctx
, Program
->Position
,
2613 "destination register is read only");
2620 program_error(ctx
, Program
->Position
,
2621 "Unknown token in parse_src_reg");
2625 if (*File
== PROGRAM_STATE_VAR
) {
2626 enum register_file file
;
2628 /* If we're referencing the Program->Parameters[] array, check if the
2629 * parameter is really a constant/literal. If so, set File to CONSTANT.
2631 assert(*Index
< (GLint
) Program
->Base
.Parameters
->NumParameters
);
2632 file
= Program
->Base
.Parameters
->Parameters
[*Index
].Type
;
2633 if (file
== PROGRAM_CONSTANT
)
2634 *File
= PROGRAM_CONSTANT
;
2637 /* Add attributes to InputsRead only if they are used the program.
2638 * This avoids the handling of unused ATTRIB declarations in the drivers. */
2639 if (*File
== PROGRAM_INPUT
)
2640 Program
->Base
.InputsRead
|= (1 << *Index
);
2647 * Parse vertex/fragment program vector source register.
2650 parse_vector_src_reg(GLcontext
*ctx
, const GLubyte
**inst
,
2651 struct var_cache
**vc_head
,
2652 struct arb_program
*program
,
2653 struct prog_src_register
*reg
)
2655 enum register_file file
;
2659 GLboolean isRelOffset
;
2662 negateMask
= (parse_sign (inst
) == -1) ? NEGATE_XYZW
: NEGATE_NONE
;
2664 /* And the src reg */
2665 if (parse_src_reg(ctx
, inst
, vc_head
, program
, &file
, &index
, &isRelOffset
))
2668 /* finally, the swizzle */
2669 parse_swizzle_mask(inst
, swizzle
, 4);
2673 reg
->Swizzle
= MAKE_SWIZZLE4(swizzle
[0], swizzle
[1], swizzle
[2], swizzle
[3]);
2674 reg
->NegateBase
= negateMask
;
2675 reg
->RelAddr
= isRelOffset
;
2681 * Parse vertex/fragment program scalar source register.
2684 parse_scalar_src_reg(GLcontext
*ctx
, const GLubyte
**inst
,
2685 struct var_cache
**vc_head
,
2686 struct arb_program
*program
,
2687 struct prog_src_register
*reg
)
2689 enum register_file file
;
2693 GLboolean isRelOffset
;
2696 negateMask
= (parse_sign (inst
) == -1) ? NEGATE_XYZW
: NEGATE_NONE
;
2698 /* And the src reg */
2699 if (parse_src_reg(ctx
, inst
, vc_head
, program
, &file
, &index
, &isRelOffset
))
2702 /* finally, the swizzle */
2703 parse_swizzle_mask(inst
, swizzle
, 1);
2707 reg
->Swizzle
= (swizzle
[0] << 0);
2708 reg
->NegateBase
= negateMask
;
2709 reg
->RelAddr
= isRelOffset
;
2715 * Parse vertex/fragment program destination register.
2716 * \return 1 if error, 0 if no error.
2719 parse_dst_reg(GLcontext
* ctx
, const GLubyte
** inst
,
2720 struct var_cache
**vc_head
, struct arb_program
*program
,
2721 struct prog_dst_register
*reg
)
2725 enum register_file file
;
2727 if (parse_masked_dst_reg (ctx
, inst
, vc_head
, program
, &file
, &idx
, &mask
))
2732 reg
->WriteMask
= mask
;
2738 * This is a big mother that handles getting opcodes into the instruction
2739 * and handling the src & dst registers for fragment program instructions
2740 * \return 1 if error, 0 if no error
2743 parse_fp_instruction (GLcontext
* ctx
, const GLubyte
** inst
,
2744 struct var_cache
**vc_head
, struct arb_program
*Program
,
2745 struct prog_instruction
*fp
)
2749 GLubyte instClass
, type
, code
;
2751 GLuint shadow_tex
= 0;
2753 _mesa_init_instructions(fp
, 1);
2755 /* Record the position in the program string for debugging */
2756 fp
->StringPos
= Program
->Position
;
2758 /* OP_ALU_INST or OP_TEX_INST */
2759 instClass
= *(*inst
)++;
2761 /* OP_ALU_{VECTOR, SCALAR, BINSC, BIN, TRI, SWZ},
2762 * OP_TEX_{SAMPLE, KIL}
2766 /* The actual opcode name */
2769 /* Increment the correct count */
2770 switch (instClass
) {
2772 Program
->NumAluInstructions
++;
2775 Program
->NumTexInstructions
++;
2783 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2785 fp
->Opcode
= OPCODE_ABS
;
2789 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2791 fp
->Opcode
= OPCODE_FLR
;
2795 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2797 fp
->Opcode
= OPCODE_FRC
;
2801 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2803 fp
->Opcode
= OPCODE_LIT
;
2807 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2809 fp
->Opcode
= OPCODE_MOV
;
2813 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2816 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
2823 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2825 fp
->Opcode
= OPCODE_COS
;
2829 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2831 fp
->Opcode
= OPCODE_EX2
;
2835 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2837 fp
->Opcode
= OPCODE_LG2
;
2841 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2843 fp
->Opcode
= OPCODE_RCP
;
2847 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2849 fp
->Opcode
= OPCODE_RSQ
;
2853 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2855 fp
->Opcode
= OPCODE_SIN
;
2859 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2862 fp
->Opcode
= OPCODE_SCS
;
2866 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2869 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
2876 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2878 fp
->Opcode
= OPCODE_POW
;
2882 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2885 for (a
= 0; a
< 2; a
++) {
2886 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[a
]))
2895 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2897 fp
->Opcode
= OPCODE_ADD
;
2901 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2903 fp
->Opcode
= OPCODE_DP3
;
2907 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2909 fp
->Opcode
= OPCODE_DP4
;
2913 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2915 fp
->Opcode
= OPCODE_DPH
;
2919 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2921 fp
->Opcode
= OPCODE_DST
;
2925 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2927 fp
->Opcode
= OPCODE_MAX
;
2931 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2933 fp
->Opcode
= OPCODE_MIN
;
2937 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2939 fp
->Opcode
= OPCODE_MUL
;
2943 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2945 fp
->Opcode
= OPCODE_SGE
;
2949 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2951 fp
->Opcode
= OPCODE_SLT
;
2955 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2957 fp
->Opcode
= OPCODE_SUB
;
2961 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2963 fp
->Opcode
= OPCODE_XPD
;
2967 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2969 for (a
= 0; a
< 2; a
++) {
2970 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[a
]))
2978 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2980 fp
->Opcode
= OPCODE_CMP
;
2984 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2986 fp
->Opcode
= OPCODE_LRP
;
2990 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
2992 fp
->Opcode
= OPCODE_MAD
;
2996 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
2999 for (a
= 0; a
< 3; a
++) {
3000 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[a
]))
3008 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
3010 fp
->Opcode
= OPCODE_SWZ
;
3013 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
3019 enum register_file file
;
3022 if (parse_src_reg(ctx
, inst
, vc_head
, Program
, &file
, &index
, &rel
))
3024 parse_extended_swizzle_mask(inst
, swizzle
, &negateMask
);
3025 fp
->SrcReg
[0].File
= file
;
3026 fp
->SrcReg
[0].Index
= index
;
3027 fp
->SrcReg
[0].NegateBase
= negateMask
;
3028 fp
->SrcReg
[0].Swizzle
= MAKE_SWIZZLE4(swizzle
[0],
3038 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
3040 fp
->Opcode
= OPCODE_TEX
;
3044 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
3046 fp
->Opcode
= OPCODE_TXP
;
3050 fp
->SaturateMode
= SATURATE_ZERO_ONE
;
3052 fp
->Opcode
= OPCODE_TXB
;
3056 if (parse_dst_reg (ctx
, inst
, vc_head
, Program
, &fp
->DstReg
))
3059 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
3063 if (parse_teximage_num (ctx
, inst
, Program
, &texcoord
))
3065 fp
->TexSrcUnit
= texcoord
;
3068 switch (*(*inst
)++) {
3069 case TEXTARGET_SHADOW1D
:
3070 shadow_tex
= 1 << texcoord
;
3073 fp
->TexSrcTarget
= TEXTURE_1D_INDEX
;
3075 case TEXTARGET_SHADOW2D
:
3076 shadow_tex
= 1 << texcoord
;
3079 fp
->TexSrcTarget
= TEXTURE_2D_INDEX
;
3082 fp
->TexSrcTarget
= TEXTURE_3D_INDEX
;
3084 case TEXTARGET_SHADOWRECT
:
3085 shadow_tex
= 1 << texcoord
;
3087 case TEXTARGET_RECT
:
3088 fp
->TexSrcTarget
= TEXTURE_RECT_INDEX
;
3090 case TEXTARGET_CUBE
:
3091 fp
->TexSrcTarget
= TEXTURE_CUBE_INDEX
;
3093 case TEXTARGET_SHADOW1D_ARRAY
:
3094 shadow_tex
= 1 << texcoord
;
3096 case TEXTARGET_1D_ARRAY
:
3097 fp
->TexSrcTarget
= TEXTURE_1D_ARRAY_INDEX
;
3099 case TEXTARGET_SHADOW2D_ARRAY
:
3100 shadow_tex
= 1 << texcoord
;
3102 case TEXTARGET_2D_ARRAY
:
3103 fp
->TexSrcTarget
= TEXTURE_2D_ARRAY_INDEX
;
3110 /* Don't test the first time a particular sampler is seen. Each time
3111 * after that, make sure the shadow state is the same.
3113 if ((_mesa_bitcount(Program
->TexturesUsed
[texcoord
]) > 0)
3114 && ((Program
->ShadowSamplers
& (1 << texcoord
)) != shadow_tex
)) {
3115 program_error(ctx
, Program
->Position
,
3116 "texture image unit used for shadow sampling and non-shadow sampling");
3120 Program
->TexturesUsed
[texcoord
] |= (1 << fp
->TexSrcTarget
);
3121 /* Check that both "2D" and "CUBE" (for example) aren't both used */
3122 if (_mesa_bitcount(Program
->TexturesUsed
[texcoord
]) > 1) {
3123 program_error(ctx
, Program
->Position
,
3124 "multiple targets used on one texture image unit");
3129 Program
->ShadowSamplers
|= shadow_tex
;
3133 Program
->UsesKill
= 1;
3134 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &fp
->SrcReg
[0]))
3136 fp
->Opcode
= OPCODE_KIL
;
3139 _mesa_problem(ctx
, "bad type 0x%x in parse_fp_instruction()", type
);
3148 * Handle the parsing out of a masked address register
3150 * \param Index - The register index we write to
3151 * \param WriteMask - The mask controlling which components we write (1->write)
3153 * \return 0 on sucess, 1 on error
3156 parse_vp_address_reg (GLcontext
* ctx
, const GLubyte
** inst
,
3157 struct var_cache
**vc_head
,
3158 struct arb_program
*Program
,
3159 struct prog_dst_register
*reg
)
3163 if (parse_address_reg (ctx
, inst
, vc_head
, Program
, &idx
))
3166 /* This should be 0x8 */
3169 reg
->File
= PROGRAM_ADDRESS
;
3172 /* Writemask of .x is implied */
3173 reg
->WriteMask
= 0x1;
3179 * This is a big mother that handles getting opcodes into the instruction
3180 * and handling the src & dst registers for vertex program instructions
3183 parse_vp_instruction (GLcontext
* ctx
, const GLubyte
** inst
,
3184 struct var_cache
**vc_head
, struct arb_program
*Program
,
3185 struct prog_instruction
*vp
)
3190 /* OP_ALU_{ARL, VECTOR, SCALAR, BINSC, BIN, TRI, SWZ} */
3193 /* The actual opcode name */
3196 _mesa_init_instructions(vp
, 1);
3197 /* Record the position in the program string for debugging */
3198 vp
->StringPos
= Program
->Position
;
3203 vp
->Opcode
= OPCODE_ARL
;
3205 /* Remember to set SrcReg.RelAddr; */
3207 /* Get the masked address register [dst] */
3208 if (parse_vp_address_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3211 vp
->DstReg
.File
= PROGRAM_ADDRESS
;
3213 /* Get a scalar src register */
3214 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[0]))
3222 vp
->Opcode
= OPCODE_ABS
;
3225 vp
->Opcode
= OPCODE_FLR
;
3228 vp
->Opcode
= OPCODE_FRC
;
3231 vp
->Opcode
= OPCODE_LIT
;
3234 vp
->Opcode
= OPCODE_MOV
;
3238 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3241 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[0]))
3248 vp
->Opcode
= OPCODE_EX2
;
3251 vp
->Opcode
= OPCODE_EXP
;
3254 vp
->Opcode
= OPCODE_LG2
;
3257 vp
->Opcode
= OPCODE_LOG
;
3260 vp
->Opcode
= OPCODE_RCP
;
3263 vp
->Opcode
= OPCODE_RSQ
;
3266 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3269 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[0]))
3276 vp
->Opcode
= OPCODE_POW
;
3279 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3282 for (a
= 0; a
< 2; a
++) {
3283 if (parse_scalar_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[a
]))
3291 vp
->Opcode
= OPCODE_ADD
;
3294 vp
->Opcode
= OPCODE_DP3
;
3297 vp
->Opcode
= OPCODE_DP4
;
3300 vp
->Opcode
= OPCODE_DPH
;
3303 vp
->Opcode
= OPCODE_DST
;
3306 vp
->Opcode
= OPCODE_MAX
;
3309 vp
->Opcode
= OPCODE_MIN
;
3312 vp
->Opcode
= OPCODE_MUL
;
3315 vp
->Opcode
= OPCODE_SGE
;
3318 vp
->Opcode
= OPCODE_SLT
;
3321 vp
->Opcode
= OPCODE_SUB
;
3324 vp
->Opcode
= OPCODE_XPD
;
3327 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3330 for (a
= 0; a
< 2; a
++) {
3331 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[a
]))
3339 vp
->Opcode
= OPCODE_MAD
;
3343 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3346 for (a
= 0; a
< 3; a
++) {
3347 if (parse_vector_src_reg(ctx
, inst
, vc_head
, Program
, &vp
->SrcReg
[a
]))
3355 vp
->Opcode
= OPCODE_SWZ
;
3362 enum register_file file
;
3365 if (parse_dst_reg(ctx
, inst
, vc_head
, Program
, &vp
->DstReg
))
3368 if (parse_src_reg(ctx
, inst
, vc_head
, Program
, &file
, &index
, &relAddr
))
3370 parse_extended_swizzle_mask (inst
, swizzle
, &negateMask
);
3371 vp
->SrcReg
[0].File
= file
;
3372 vp
->SrcReg
[0].Index
= index
;
3373 vp
->SrcReg
[0].NegateBase
= negateMask
;
3374 vp
->SrcReg
[0].Swizzle
= MAKE_SWIZZLE4(swizzle
[0],
3378 vp
->SrcReg
[0].RelAddr
= relAddr
;
3388 debug_variables (GLcontext
* ctx
, struct var_cache
*vc_head
,
3389 struct arb_program
*Program
)
3391 struct var_cache
*vc
;
3394 fprintf (stderr
, "debug_variables, vc_head: %p\n", (void*) vc_head
);
3396 /* First of all, print out the contents of the var_cache */
3399 fprintf (stderr
, "[%p]\n", (void*) vc
);
3402 fprintf (stderr
, "UNDEFINED %s\n", vc
->name
);
3405 fprintf (stderr
, "ATTRIB %s\n", vc
->name
);
3406 fprintf (stderr
, " binding: 0x%x\n", vc
->attrib_binding
);
3409 fprintf (stderr
, "PARAM %s begin: %d len: %d\n", vc
->name
,
3410 vc
->param_binding_begin
, vc
->param_binding_length
);
3411 b
= vc
->param_binding_begin
;
3412 for (a
= 0; a
< vc
->param_binding_length
; a
++) {
3413 fprintf (stderr
, "%s\n",
3414 Program
->Base
.Parameters
->Parameters
[a
+ b
].Name
);
3415 if (Program
->Base
.Parameters
->Parameters
[a
+ b
].Type
== PROGRAM_STATE_VAR
) {
3417 s
= _mesa_program_state_string(Program
->Base
.Parameters
->Parameters
3418 [a
+ b
].StateIndexes
);
3419 fprintf(stderr
, "%s\n", s
);
3423 fprintf (stderr
, "%f %f %f %f\n",
3424 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][0],
3425 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][1],
3426 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][2],
3427 Program
->Base
.Parameters
->ParameterValues
[a
+ b
][3]);
3431 fprintf (stderr
, "TEMP %s\n", vc
->name
);
3432 fprintf (stderr
, " binding: 0x%x\n", vc
->temp_binding
);
3435 fprintf (stderr
, "OUTPUT %s\n", vc
->name
);
3436 fprintf (stderr
, " binding: 0x%x\n", vc
->output_binding
);
3439 fprintf (stderr
, "ALIAS %s\n", vc
->name
);
3440 fprintf (stderr
, " binding: 0x%p (%s)\n",
3441 (void*) vc
->alias_binding
, vc
->alias_binding
->name
);
3451 #endif /* DEBUG_PARSING */
3455 * The main loop for parsing a fragment or vertex program
3457 * \return 1 on error, 0 on success
3460 parse_instructions(GLcontext
* ctx
, const GLubyte
* inst
,
3461 struct var_cache
**vc_head
, struct arb_program
*Program
)
3463 const GLuint maxInst
= (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
)
3464 ? ctx
->Const
.FragmentProgram
.MaxInstructions
3465 : ctx
->Const
.VertexProgram
.MaxInstructions
;
3468 ASSERT(MAX_PROGRAM_INSTRUCTIONS
>= maxInst
);
3470 Program
->MajorVersion
= (GLuint
) * inst
++;
3471 Program
->MinorVersion
= (GLuint
) * inst
++;
3473 while (*inst
!= END
) {
3478 case ARB_PRECISION_HINT_FASTEST
:
3479 Program
->PrecisionOption
= GL_FASTEST
;
3482 case ARB_PRECISION_HINT_NICEST
:
3483 Program
->PrecisionOption
= GL_NICEST
;
3487 Program
->FogOption
= GL_EXP
;
3491 Program
->FogOption
= GL_EXP2
;
3494 case ARB_FOG_LINEAR
:
3495 Program
->FogOption
= GL_LINEAR
;
3498 case ARB_POSITION_INVARIANT
:
3499 if (Program
->Base
.Target
== GL_VERTEX_PROGRAM_ARB
)
3500 Program
->HintPositionInvariant
= GL_TRUE
;
3503 case ARB_FRAGMENT_PROGRAM_SHADOW
:
3504 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
3505 /* TODO ARB_fragment_program_shadow code */
3509 case ARB_DRAW_BUFFERS
:
3510 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
3511 /* do nothing for now */
3515 case MESA_TEXTURE_ARRAY
:
3516 /* do nothing for now */
3523 if (Program
->Base
.NumInstructions
+ 1 >= maxInst
) {
3524 program_error(ctx
, Program
->Position
,
3525 "Max instruction count exceeded");
3528 Program
->Position
= parse_position (&inst
);
3529 /* parse the current instruction */
3530 if (Program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
) {
3531 err
= parse_fp_instruction (ctx
, &inst
, vc_head
, Program
,
3532 &Program
->Base
.Instructions
[Program
->Base
.NumInstructions
]);
3535 err
= parse_vp_instruction (ctx
, &inst
, vc_head
, Program
,
3536 &Program
->Base
.Instructions
[Program
->Base
.NumInstructions
]);
3539 /* increment instuction count */
3540 Program
->Base
.NumInstructions
++;
3544 err
= parse_declaration (ctx
, &inst
, vc_head
, Program
);
3555 /* Finally, tag on an OPCODE_END instruction */
3557 const GLuint numInst
= Program
->Base
.NumInstructions
;
3558 _mesa_init_instructions(Program
->Base
.Instructions
+ numInst
, 1);
3559 Program
->Base
.Instructions
[numInst
].Opcode
= OPCODE_END
;
3560 /* YYY Wrong Position in program, whatever, at least not random -> crash
3561 Program->Position = parse_position (&inst);
3563 Program
->Base
.Instructions
[numInst
].StringPos
= Program
->Position
;
3565 Program
->Base
.NumInstructions
++;
3568 * Initialize native counts to logical counts. The device driver may
3569 * change them if program is translated into a hardware program.
3571 Program
->Base
.NumNativeInstructions
= Program
->Base
.NumInstructions
;
3572 Program
->Base
.NumNativeTemporaries
= Program
->Base
.NumTemporaries
;
3573 Program
->Base
.NumNativeParameters
= Program
->Base
.NumParameters
;
3574 Program
->Base
.NumNativeAttributes
= Program
->Base
.NumAttributes
;
3575 Program
->Base
.NumNativeAddressRegs
= Program
->Base
.NumAddressRegs
;
3582 LONGSTRING
static char core_grammar_text
[] =
3583 #include "shader/grammar/grammar_syn.h"
3588 * Set a grammar parameter.
3589 * \param name the grammar parameter
3590 * \param value the new parameter value
3591 * \return 0 if OK, 1 if error
3594 set_reg8 (GLcontext
*ctx
, grammar id
, const char *name
, GLubyte value
)
3596 char error_msg
[300];
3599 if (grammar_set_reg8 (id
, (const byte
*) name
, value
))
3602 grammar_get_last_error ((byte
*) error_msg
, 300, &error_pos
);
3603 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3604 _mesa_error (ctx
, GL_INVALID_OPERATION
, "Grammar Register Error");
3610 * Enable support for the given language option in the parser.
3611 * \return 1 if OK, 0 if error
3614 enable_ext(GLcontext
*ctx
, grammar id
, const char *name
)
3616 return !set_reg8(ctx
, id
, name
, 1);
3621 * Enable parser extensions based on which OpenGL extensions are supported
3622 * by this rendering context.
3624 * \return GL_TRUE if OK, GL_FALSE if error.
3627 enable_parser_extensions(GLcontext
*ctx
, grammar id
)
3630 /* These are not supported at this time */
3631 if ((ctx
->Extensions
.ARB_vertex_blend
||
3632 ctx
->Extensions
.EXT_vertex_weighting
)
3633 && !enable_ext(ctx
, id
, "vertex_blend"))
3635 if (ctx
->Extensions
.ARB_matrix_palette
3636 && !enable_ext(ctx
, id
, "matrix_palette"))
3639 if (ctx
->Extensions
.ARB_fragment_program_shadow
3640 && !enable_ext(ctx
, id
, "fragment_program_shadow"))
3642 if (ctx
->Extensions
.EXT_point_parameters
3643 && !enable_ext(ctx
, id
, "point_parameters"))
3645 if (ctx
->Extensions
.EXT_secondary_color
3646 && !enable_ext(ctx
, id
, "secondary_color"))
3648 if (ctx
->Extensions
.EXT_fog_coord
3649 && !enable_ext(ctx
, id
, "fog_coord"))
3651 if (ctx
->Extensions
.NV_texture_rectangle
3652 && !enable_ext(ctx
, id
, "texture_rectangle"))
3654 if (!enable_ext(ctx
, id
, "draw_buffers"))
3656 if (ctx
->Extensions
.MESA_texture_array
3657 && !enable_ext(ctx
, id
, "texture_array"))
3660 /* hack for Warcraft (see bug 8060) */
3661 enable_ext(ctx
, id
, "vertex_blend");
3669 * This kicks everything off.
3671 * \param ctx - The GL Context
3672 * \param str - The program string
3673 * \param len - The program string length
3674 * \param program - The arb_program struct to return all the parsed info in
3675 * \return GL_TRUE on sucess, GL_FALSE on error
3678 _mesa_parse_arb_program(GLcontext
*ctx
, GLenum target
,
3679 const GLubyte
*str
, GLsizei len
,
3680 struct arb_program
*program
)
3682 GLint a
, err
, error_pos
;
3683 char error_msg
[300];
3685 struct var_cache
*vc_head
;
3686 grammar arbprogram_syn_id
;
3687 GLubyte
*parsed
, *inst
;
3688 GLubyte
*strz
= NULL
;
3689 static int arbprogram_syn_is_ok
= 0; /* XXX temporary */
3691 /* set the program target before parsing */
3692 program
->Base
.Target
= target
;
3694 /* Reset error state */
3695 _mesa_set_program_error(ctx
, -1, NULL
);
3697 /* check if arb_grammar_text (arbprogram.syn) is syntactically correct */
3698 if (!arbprogram_syn_is_ok
) {
3699 /* One-time initialization of parsing system */
3700 grammar grammar_syn_id
;
3703 grammar_syn_id
= grammar_load_from_text ((byte
*) core_grammar_text
);
3704 if (grammar_syn_id
== 0) {
3705 grammar_get_last_error ((byte
*) error_msg
, 300, &error_pos
);
3706 /* XXX this is not a GL error - it's an implementation bug! - FIX */
3707 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3708 _mesa_error (ctx
, GL_INVALID_OPERATION
,
3709 "glProgramStringARB(Error loading grammar rule set)");
3713 err
= !grammar_check(grammar_syn_id
, (byte
*) arb_grammar_text
,
3714 &parsed
, &parsed_len
);
3716 /* 'parsed' is unused here */
3717 _mesa_free (parsed
);
3720 /* NOTE: we can't destroy grammar_syn_id right here because
3721 * grammar_destroy() can reset the last error
3724 /* XXX this is not a GL error - it's an implementation bug! - FIX */
3725 grammar_get_last_error ((byte
*) error_msg
, 300, &error_pos
);
3726 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3727 _mesa_error (ctx
, GL_INVALID_OPERATION
,
3728 "glProgramString(Error loading grammar rule set");
3729 grammar_destroy (grammar_syn_id
);
3733 grammar_destroy (grammar_syn_id
);
3735 arbprogram_syn_is_ok
= 1;
3738 /* create the grammar object */
3739 arbprogram_syn_id
= grammar_load_from_text ((byte
*) arb_grammar_text
);
3740 if (arbprogram_syn_id
== 0) {
3741 /* XXX this is not a GL error - it's an implementation bug! - FIX */
3742 grammar_get_last_error ((GLubyte
*) error_msg
, 300, &error_pos
);
3743 _mesa_set_program_error (ctx
, error_pos
, error_msg
);
3744 _mesa_error (ctx
, GL_INVALID_OPERATION
,
3745 "glProgramString(Error loading grammer rule set)");
3749 /* Set program_target register value */
3750 if (set_reg8 (ctx
, arbprogram_syn_id
, "program_target",
3751 program
->Base
.Target
== GL_FRAGMENT_PROGRAM_ARB
? 0x10 : 0x20)) {
3752 grammar_destroy (arbprogram_syn_id
);
3756 if (!enable_parser_extensions(ctx
, arbprogram_syn_id
)) {
3757 grammar_destroy(arbprogram_syn_id
);
3761 /* check for NULL character occurences */
3764 for (i
= 0; i
< len
; i
++) {
3765 if (str
[i
] == '\0') {
3766 program_error(ctx
, i
, "illegal character");
3767 grammar_destroy (arbprogram_syn_id
);
3773 /* copy the program string to a null-terminated string */
3774 strz
= (GLubyte
*) _mesa_malloc (len
+ 1);
3776 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glProgramStringARB");
3777 grammar_destroy (arbprogram_syn_id
);
3780 _mesa_memcpy (strz
, str
, len
);
3783 /* do a fast check on program string - initial production buffer is 4K */
3784 err
= !grammar_fast_check(arbprogram_syn_id
, strz
,
3785 &parsed
, &parsed_len
, 0x1000);
3787 /* Syntax parse error */
3789 grammar_get_last_error((GLubyte
*) error_msg
, 300, &error_pos
);
3790 program_error(ctx
, error_pos
, error_msg
);
3793 /* useful for debugging */
3797 fprintf(stderr
, "program: %s\n", (char *) strz
);
3798 fprintf(stderr
, "Error Pos: %d\n", ctx
->Program
.ErrorPos
);
3799 s
= (char *) _mesa_find_line_column(strz
, strz
+ctx
->Program
.ErrorPos
,
3801 fprintf(stderr
, "line %d col %d: %s\n", line
, col
, s
);
3808 grammar_destroy (arbprogram_syn_id
);
3812 grammar_destroy (arbprogram_syn_id
);
3815 * Program string is syntactically correct at this point
3816 * Parse the tokenized version of the program now, generating
3817 * vertex/fragment program instructions.
3820 /* Initialize the arb_program struct */
3821 program
->Base
.String
= strz
;
3822 program
->Base
.Instructions
= _mesa_alloc_instructions(MAX_PROGRAM_INSTRUCTIONS
);
3823 program
->Base
.NumInstructions
=
3824 program
->Base
.NumTemporaries
=
3825 program
->Base
.NumParameters
=
3826 program
->Base
.NumAttributes
= program
->Base
.NumAddressRegs
= 0;
3827 program
->Base
.Parameters
= _mesa_new_parameter_list ();
3828 program
->Base
.InputsRead
= 0x0;
3829 program
->Base
.OutputsWritten
= 0x0;
3830 program
->Position
= 0;
3831 program
->MajorVersion
= program
->MinorVersion
= 0;
3832 program
->PrecisionOption
= GL_DONT_CARE
;
3833 program
->FogOption
= GL_NONE
;
3834 program
->HintPositionInvariant
= GL_FALSE
;
3835 for (a
= 0; a
< MAX_TEXTURE_IMAGE_UNITS
; a
++)
3836 program
->TexturesUsed
[a
] = 0x0;
3837 program
->ShadowSamplers
= 0x0;
3838 program
->NumAluInstructions
=
3839 program
->NumTexInstructions
=
3840 program
->NumTexIndirections
= 0;
3841 program
->UsesKill
= 0;
3846 /* Start examining the tokens in the array */
3849 /* Check the grammer rev */
3850 if (*inst
++ != REVISION
) {
3851 program_error (ctx
, 0, "Grammar version mismatch");
3855 /* ignore program target */
3857 err
= parse_instructions(ctx
, inst
, &vc_head
, program
);
3860 /*debug_variables(ctx, vc_head, program); */
3862 /* We're done with the parsed binary array */
3863 var_cache_destroy (&vc_head
);
3865 _mesa_free (parsed
);
3867 /* Reallocate the instruction array from size [MAX_PROGRAM_INSTRUCTIONS]
3868 * to size [ap.Base.NumInstructions].
3870 program
->Base
.Instructions
3871 = _mesa_realloc_instructions(program
->Base
.Instructions
,
3872 MAX_PROGRAM_INSTRUCTIONS
,
3873 program
->Base
.NumInstructions
);
3881 _mesa_parse_arb_fragment_program(GLcontext
* ctx
, GLenum target
,
3882 const GLvoid
*str
, GLsizei len
,
3883 struct gl_fragment_program
*program
)
3885 struct arb_program ap
;
3888 ASSERT(target
== GL_FRAGMENT_PROGRAM_ARB
);
3889 if (!_mesa_parse_arb_program(ctx
, target
, (const GLubyte
*) str
, len
, &ap
)) {
3890 /* Error in the program. Just return. */
3894 /* Copy the relevant contents of the arb_program struct into the
3895 * fragment_program struct.
3897 program
->Base
.String
= ap
.Base
.String
;
3898 program
->Base
.NumInstructions
= ap
.Base
.NumInstructions
;
3899 program
->Base
.NumTemporaries
= ap
.Base
.NumTemporaries
;
3900 program
->Base
.NumParameters
= ap
.Base
.NumParameters
;
3901 program
->Base
.NumAttributes
= ap
.Base
.NumAttributes
;
3902 program
->Base
.NumAddressRegs
= ap
.Base
.NumAddressRegs
;
3903 program
->Base
.NumNativeInstructions
= ap
.Base
.NumNativeInstructions
;
3904 program
->Base
.NumNativeTemporaries
= ap
.Base
.NumNativeTemporaries
;
3905 program
->Base
.NumNativeParameters
= ap
.Base
.NumNativeParameters
;
3906 program
->Base
.NumNativeAttributes
= ap
.Base
.NumNativeAttributes
;
3907 program
->Base
.NumNativeAddressRegs
= ap
.Base
.NumNativeAddressRegs
;
3908 program
->Base
.NumAluInstructions
= ap
.Base
.NumAluInstructions
;
3909 program
->Base
.NumTexInstructions
= ap
.Base
.NumTexInstructions
;
3910 program
->Base
.NumTexIndirections
= ap
.Base
.NumTexIndirections
;
3911 program
->Base
.NumNativeAluInstructions
= ap
.Base
.NumAluInstructions
;
3912 program
->Base
.NumNativeTexInstructions
= ap
.Base
.NumTexInstructions
;
3913 program
->Base
.NumNativeTexIndirections
= ap
.Base
.NumTexIndirections
;
3914 program
->Base
.InputsRead
= ap
.Base
.InputsRead
;
3915 program
->Base
.OutputsWritten
= ap
.Base
.OutputsWritten
;
3916 for (i
= 0; i
< MAX_TEXTURE_IMAGE_UNITS
; i
++) {
3917 program
->Base
.TexturesUsed
[i
] = ap
.TexturesUsed
[i
];
3918 if (ap
.TexturesUsed
[i
])
3919 program
->Base
.SamplersUsed
|= (1 << i
);
3921 program
->Base
.ShadowSamplers
= ap
.ShadowSamplers
;
3922 program
->FogOption
= ap
.FogOption
;
3923 program
->UsesKill
= ap
.UsesKill
;
3925 if (program
->FogOption
)
3926 program
->Base
.InputsRead
|= FRAG_BIT_FOGC
;
3928 if (program
->Base
.Instructions
)
3929 _mesa_free(program
->Base
.Instructions
);
3930 program
->Base
.Instructions
= ap
.Base
.Instructions
;
3932 if (program
->Base
.Parameters
)
3933 _mesa_free_parameter_list(program
->Base
.Parameters
);
3934 program
->Base
.Parameters
= ap
.Base
.Parameters
;
3936 /* Append fog instructions now if the program has "OPTION ARB_fog_exp"
3937 * or similar. We used to leave this up to drivers, but it appears
3938 * there's no hardware that wants to do fog in a discrete stage separate
3939 * from the fragment shader.
3941 if (program
->FogOption
!= GL_NONE
) {
3942 _mesa_append_fog_code(ctx
, program
);
3943 program
->FogOption
= GL_NONE
;
3947 _mesa_printf("____________Fragment program %u ________\n", program
->Base
.Id
);
3948 _mesa_print_program(&program
->Base
);
3955 * Parse the vertex program string. If success, update the given
3956 * vertex_program object with the new program. Else, leave the vertex_program
3960 _mesa_parse_arb_vertex_program(GLcontext
*ctx
, GLenum target
,
3961 const GLvoid
*str
, GLsizei len
,
3962 struct gl_vertex_program
*program
)
3964 struct arb_program ap
;
3966 ASSERT(target
== GL_VERTEX_PROGRAM_ARB
);
3968 if (!_mesa_parse_arb_program(ctx
, target
, (const GLubyte
*) str
, len
, &ap
)) {
3969 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glProgramString(bad program)");
3973 /* Copy the relevant contents of the arb_program struct into the
3974 * vertex_program struct.
3976 program
->Base
.String
= ap
.Base
.String
;
3977 program
->Base
.NumInstructions
= ap
.Base
.NumInstructions
;
3978 program
->Base
.NumTemporaries
= ap
.Base
.NumTemporaries
;
3979 program
->Base
.NumParameters
= ap
.Base
.NumParameters
;
3980 program
->Base
.NumAttributes
= ap
.Base
.NumAttributes
;
3981 program
->Base
.NumAddressRegs
= ap
.Base
.NumAddressRegs
;
3982 program
->Base
.NumNativeInstructions
= ap
.Base
.NumNativeInstructions
;
3983 program
->Base
.NumNativeTemporaries
= ap
.Base
.NumNativeTemporaries
;
3984 program
->Base
.NumNativeParameters
= ap
.Base
.NumNativeParameters
;
3985 program
->Base
.NumNativeAttributes
= ap
.Base
.NumNativeAttributes
;
3986 program
->Base
.NumNativeAddressRegs
= ap
.Base
.NumNativeAddressRegs
;
3987 program
->Base
.InputsRead
= ap
.Base
.InputsRead
;
3988 program
->Base
.OutputsWritten
= ap
.Base
.OutputsWritten
;
3989 program
->IsPositionInvariant
= ap
.HintPositionInvariant
;
3991 if (program
->Base
.Instructions
)
3992 _mesa_free(program
->Base
.Instructions
);
3993 program
->Base
.Instructions
= ap
.Base
.Instructions
;
3995 if (program
->Base
.Parameters
)
3996 _mesa_free_parameter_list(program
->Base
.Parameters
);
3997 program
->Base
.Parameters
= ap
.Base
.Parameters
;
4000 _mesa_printf("____________Vertex program %u __________\n", program
->Base
.Id
);
4001 _mesa_print_program(&program
->Base
);