2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 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.
27 * NVIDIA vertex program parser.
32 * Regarding GL_NV_vertex_program, GL_NV_vertex_program1_1:
34 * Portions of this software may use or implement intellectual
35 * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims
36 * any and all warranties with respect to such intellectual property,
37 * including any use thereof or modifications thereto.
46 #include "nvprogram.h"
47 #include "nvvertparse.h"
48 #include "nvvertprog.h"
53 * Current parsing state. This structure is passed among the parsing
54 * functions and keeps track of the current parser position and various
61 const GLubyte
*curLine
;
62 GLboolean isStateProgram
;
63 GLboolean isPositionInvariant
;
64 GLboolean isVersion1_1
;
66 GLuint outputsWritten
;
67 GLboolean anyProgRegsWritten
;
68 GLuint numInst
; /* number of instructions parsed */
73 * Called whenever we find an error during parsing.
76 record_error(struct parse_state
*parseState
, const char *msg
, int lineNo
)
80 const GLubyte
*lineStr
;
81 lineStr
= _mesa_find_line_column(parseState
->start
,
82 parseState
->pos
, &line
, &column
);
83 _mesa_debug(parseState
->ctx
,
84 "nvfragparse.c(%d): line %d, column %d:%s (%s)\n",
85 lineNo
, line
, column
, (char *) lineStr
, msg
);
86 _mesa_free((void *) lineStr
);
91 /* Check that no error was already recorded. Only record the first one. */
92 if (parseState
->ctx
->Program
.ErrorString
[0] == 0) {
93 _mesa_set_program_error(parseState
->ctx
,
94 parseState
->pos
- parseState
->start
,
100 #define RETURN_ERROR \
102 record_error(parseState, "Unexpected end of input.", __LINE__); \
106 #define RETURN_ERROR1(msg) \
108 record_error(parseState, msg, __LINE__); \
112 #define RETURN_ERROR2(msg1, msg2) \
115 _mesa_sprintf(err, "%s %s", msg1, msg2); \
116 record_error(parseState, err, __LINE__); \
124 static GLboolean
IsLetter(GLubyte b
)
126 return (b
>= 'a' && b
<= 'z') || (b
>= 'A' && b
<= 'Z');
130 static GLboolean
IsDigit(GLubyte b
)
132 return b
>= '0' && b
<= '9';
136 static GLboolean
IsWhitespace(GLubyte b
)
138 return b
== ' ' || b
== '\t' || b
== '\n' || b
== '\r';
143 * Starting at 'str' find the next token. A token can be an integer,
144 * an identifier or punctuation symbol.
145 * \return <= 0 we found an error, else, return number of characters parsed.
148 GetToken(struct parse_state
*parseState
, GLubyte
*token
)
150 const GLubyte
*str
= parseState
->pos
;
155 /* skip whitespace and comments */
156 while (str
[i
] && (IsWhitespace(str
[i
]) || str
[i
] == '#')) {
159 while (str
[i
] && (str
[i
] != '\n' && str
[i
] != '\r')) {
162 if (str
[i
] == '\n' || str
[i
] == '\r')
163 parseState
->curLine
= str
+ i
+ 1;
166 /* skip whitespace */
167 if (str
[i
] == '\n' || str
[i
] == '\r')
168 parseState
->curLine
= str
+ i
+ 1;
176 /* try matching an integer */
177 while (str
[i
] && IsDigit(str
[i
])) {
178 token
[j
++] = str
[i
++];
180 if (j
> 0 || !str
[i
]) {
185 /* try matching an identifier */
186 if (IsLetter(str
[i
])) {
187 while (str
[i
] && (IsLetter(str
[i
]) || IsDigit(str
[i
]))) {
188 token
[j
++] = str
[i
++];
194 /* punctuation character */
208 * Get next token from input stream and increment stream pointer past token.
211 Parse_Token(struct parse_state
*parseState
, GLubyte
*token
)
214 i
= GetToken(parseState
, token
);
216 parseState
->pos
+= (-i
);
219 parseState
->pos
+= i
;
225 * Get next token from input stream but don't increment stream pointer.
228 Peek_Token(struct parse_state
*parseState
, GLubyte
*token
)
231 i
= GetToken(parseState
, token
);
233 parseState
->pos
+= (-i
);
236 len
= (GLint
)_mesa_strlen((const char *) token
);
237 parseState
->pos
+= (i
- len
);
243 * Try to match 'pattern' as the next token after any whitespace/comments.
244 * Advance the current parsing position only if we match the pattern.
245 * \return GL_TRUE if pattern is matched, GL_FALSE otherwise.
248 Parse_String(struct parse_state
*parseState
, const char *pattern
)
253 /* skip whitespace and comments */
254 while (IsWhitespace(*parseState
->pos
) || *parseState
->pos
== '#') {
255 if (*parseState
->pos
== '#') {
256 while (*parseState
->pos
&& (*parseState
->pos
!= '\n' && *parseState
->pos
!= '\r')) {
257 parseState
->pos
+= 1;
259 if (*parseState
->pos
== '\n' || *parseState
->pos
== '\r')
260 parseState
->curLine
= parseState
->pos
+ 1;
263 /* skip whitespace */
264 if (*parseState
->pos
== '\n' || *parseState
->pos
== '\r')
265 parseState
->curLine
= parseState
->pos
+ 1;
266 parseState
->pos
+= 1;
270 /* Try to match the pattern */
272 for (i
= 0; pattern
[i
]; i
++) {
273 if (*m
!= (GLubyte
) pattern
[i
])
279 return GL_TRUE
; /* success */
283 /**********************************************************************/
285 static const char *InputRegisters
[MAX_NV_VERTEX_PROGRAM_INPUTS
+ 1] = {
286 "OPOS", "WGHT", "NRML", "COL0", "COL1", "FOGC", "6", "7",
287 "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL
290 static const char *OutputRegisters
[MAX_NV_VERTEX_PROGRAM_OUTPUTS
+ 1] = {
291 "HPOS", "COL0", "COL1", "BFC0", "BFC1", "FOGC", "PSIZ",
292 "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL
295 /* NOTE: the order here must match opcodes in nvvertprog.h */
296 static const char *Opcodes
[] = {
297 "MOV", "LIT", "RCP", "RSQ", "EXP", "LOG", "MUL", "ADD", "DP3", "DP4",
298 "DST", "MIN", "MAX", "SLT", "SGE", "MAD", "ARL", "DPH", "RCC", "SUB",
300 /* GL_ARB_vertex_program */
301 "FLR", "FRC", "EX2", "LG2", "POW", "XPD", "SWZ",
310 * Parse a temporary register: Rnn
313 Parse_TempReg(struct parse_state
*parseState
, GLint
*tempRegNum
)
317 /* Should be 'R##' */
318 if (!Parse_Token(parseState
, token
))
321 RETURN_ERROR1("Expected R##");
323 if (IsDigit(token
[1])) {
324 GLint reg
= _mesa_atoi((char *) (token
+ 1));
325 if (reg
>= MAX_NV_VERTEX_PROGRAM_TEMPS
)
326 RETURN_ERROR1("Bad temporary register name");
330 RETURN_ERROR1("Bad temporary register name");
338 * Parse address register "A0.x"
341 Parse_AddrReg(struct parse_state
*parseState
)
344 if (!Parse_String(parseState
, "A0"))
348 if (!Parse_String(parseState
, "."))
352 if (!Parse_String(parseState
, "x"))
360 * Parse absolute program parameter register "c[##]"
363 Parse_AbsParamReg(struct parse_state
*parseState
, GLint
*regNum
)
367 if (!Parse_String(parseState
, "c"))
370 if (!Parse_String(parseState
, "["))
373 if (!Parse_Token(parseState
, token
))
376 if (IsDigit(token
[0])) {
377 /* a numbered program parameter register */
378 GLint reg
= _mesa_atoi((char *) token
);
379 if (reg
>= MAX_NV_VERTEX_PROGRAM_PARAMS
)
380 RETURN_ERROR1("Bad program parameter number");
387 if (!Parse_String(parseState
, "]"))
395 Parse_ParamReg(struct parse_state
*parseState
, struct vp_src_register
*srcReg
)
399 if (!Parse_String(parseState
, "c"))
402 if (!Parse_String(parseState
, "["))
405 if (!Peek_Token(parseState
, token
))
408 if (IsDigit(token
[0])) {
409 /* a numbered program parameter register */
411 (void) Parse_Token(parseState
, token
);
412 reg
= _mesa_atoi((char *) token
);
413 if (reg
>= MAX_NV_VERTEX_PROGRAM_PARAMS
)
414 RETURN_ERROR1("Bad program parameter number");
415 srcReg
->File
= PROGRAM_ENV_PARAM
;
418 else if (_mesa_strcmp((const char *) token
, "A0") == 0) {
419 /* address register "A0.x" */
420 if (!Parse_AddrReg(parseState
))
423 srcReg
->RelAddr
= GL_TRUE
;
424 srcReg
->File
= PROGRAM_ENV_PARAM
;
425 /* Look for +/-N offset */
426 if (!Peek_Token(parseState
, token
))
429 if (token
[0] == '-' || token
[0] == '+') {
430 const GLubyte sign
= token
[0];
431 (void) Parse_Token(parseState
, token
); /* consume +/- */
433 /* an integer should be next */
434 if (!Parse_Token(parseState
, token
))
437 if (IsDigit(token
[0])) {
438 const GLint k
= _mesa_atoi((char *) token
);
441 RETURN_ERROR1("Bad address offset");
446 RETURN_ERROR1("Bad address offset");
455 /* probably got a ']', catch it below */
462 /* Match closing ']' */
463 if (!Parse_String(parseState
, "]"))
471 * Parse v[#] or v[<name>]
474 Parse_AttribReg(struct parse_state
*parseState
, GLint
*tempRegNum
)
480 if (!Parse_String(parseState
, "v"))
484 if (!Parse_String(parseState
, "["))
487 /* match number or named register */
488 if (!Parse_Token(parseState
, token
))
491 if (parseState
->isStateProgram
&& token
[0] != '0')
492 RETURN_ERROR1("Only v[0] accessible in vertex state programs");
494 if (IsDigit(token
[0])) {
495 GLint reg
= _mesa_atoi((char *) token
);
496 if (reg
>= MAX_NV_VERTEX_PROGRAM_INPUTS
)
497 RETURN_ERROR1("Bad vertex attribute register name");
501 for (j
= 0; InputRegisters
[j
]; j
++) {
502 if (_mesa_strcmp((const char *) token
, InputRegisters
[j
]) == 0) {
507 if (!InputRegisters
[j
]) {
508 /* unknown input register label */
509 RETURN_ERROR2("Bad register name", token
);
514 if (!Parse_String(parseState
, "]"))
522 Parse_OutputReg(struct parse_state
*parseState
, GLint
*outputRegNum
)
528 if (!Parse_String(parseState
, "o"))
532 if (!Parse_String(parseState
, "["))
535 /* Get output reg name */
536 if (!Parse_Token(parseState
, token
))
539 if (parseState
->isPositionInvariant
)
540 start
= 1; /* skip HPOS register name */
544 /* try to match an output register name */
545 for (j
= start
; OutputRegisters
[j
]; j
++) {
546 if (_mesa_strcmp((const char *) token
, OutputRegisters
[j
]) == 0) {
551 if (!OutputRegisters
[j
])
552 RETURN_ERROR1("Unrecognized output register name");
555 if (!Parse_String(parseState
, "]"))
556 RETURN_ERROR1("Expected ]");
563 Parse_MaskedDstReg(struct parse_state
*parseState
, struct vp_dst_register
*dstReg
)
568 /* Dst reg can be R<n> or o[n] */
569 if (!Peek_Token(parseState
, token
))
572 if (token
[0] == 'R') {
573 /* a temporary register */
574 dstReg
->File
= PROGRAM_TEMPORARY
;
575 if (!Parse_TempReg(parseState
, &idx
))
579 else if (!parseState
->isStateProgram
&& token
[0] == 'o') {
580 /* an output register */
581 dstReg
->File
= PROGRAM_OUTPUT
;
582 if (!Parse_OutputReg(parseState
, &idx
))
586 else if (parseState
->isStateProgram
&& token
[0] == 'c' &&
587 parseState
->isStateProgram
) {
588 /* absolute program parameter register */
589 /* Only valid for vertex state programs */
590 dstReg
->File
= PROGRAM_ENV_PARAM
;
591 if (!Parse_AbsParamReg(parseState
, &idx
))
596 RETURN_ERROR1("Bad destination register name");
599 /* Parse optional write mask */
600 if (!Peek_Token(parseState
, token
))
603 if (token
[0] == '.') {
607 if (!Parse_String(parseState
, "."))
610 if (!Parse_Token(parseState
, token
))
613 dstReg
->WriteMask
= 0;
615 if (token
[k
] == 'x') {
616 dstReg
->WriteMask
|= WRITEMASK_X
;
619 if (token
[k
] == 'y') {
620 dstReg
->WriteMask
|= WRITEMASK_Y
;
623 if (token
[k
] == 'z') {
624 dstReg
->WriteMask
|= WRITEMASK_Z
;
627 if (token
[k
] == 'w') {
628 dstReg
->WriteMask
|= WRITEMASK_W
;
632 RETURN_ERROR1("Bad writemask character");
637 dstReg
->WriteMask
= WRITEMASK_XYZW
;
644 Parse_SwizzleSrcReg(struct parse_state
*parseState
, struct vp_src_register
*srcReg
)
649 srcReg
->RelAddr
= GL_FALSE
;
652 if (!Peek_Token(parseState
, token
))
654 if (token
[0] == '-') {
655 (void) Parse_String(parseState
, "-");
656 srcReg
->Negate
= GL_TRUE
;
657 if (!Peek_Token(parseState
, token
))
661 srcReg
->Negate
= GL_FALSE
;
664 /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
665 if (token
[0] == 'R') {
666 srcReg
->File
= PROGRAM_TEMPORARY
;
667 if (!Parse_TempReg(parseState
, &idx
))
671 else if (token
[0] == 'c') {
672 if (!Parse_ParamReg(parseState
, srcReg
))
675 else if (token
[0] == 'v') {
676 srcReg
->File
= PROGRAM_INPUT
;
677 if (!Parse_AttribReg(parseState
, &idx
))
682 RETURN_ERROR2("Bad source register name", token
);
685 /* init swizzle fields */
686 srcReg
->Swizzle
= SWIZZLE_NOOP
;
688 /* Look for optional swizzle suffix */
689 if (!Peek_Token(parseState
, token
))
691 if (token
[0] == '.') {
692 (void) Parse_String(parseState
, "."); /* consume . */
694 if (!Parse_Token(parseState
, token
))
698 /* single letter swizzle */
700 srcReg
->Swizzle
= MAKE_SWIZZLE4(0, 0, 0, 0);
701 else if (token
[0] == 'y')
702 srcReg
->Swizzle
= MAKE_SWIZZLE4(1, 1, 1, 1);
703 else if (token
[0] == 'z')
704 srcReg
->Swizzle
= MAKE_SWIZZLE4(2, 2, 2, 2);
705 else if (token
[0] == 'w')
706 srcReg
->Swizzle
= MAKE_SWIZZLE4(3, 3, 3, 3);
708 RETURN_ERROR1("Expected x, y, z, or w");
711 /* 2, 3 or 4-component swizzle */
713 for (k
= 0; token
[k
] && k
< 5; k
++) {
715 srcReg
->Swizzle
|= 0 << (k
*3);
716 else if (token
[k
] == 'y')
717 srcReg
->Swizzle
|= 1 << (k
*3);
718 else if (token
[k
] == 'z')
719 srcReg
->Swizzle
|= 2 << (k
*3);
720 else if (token
[k
] == 'w')
721 srcReg
->Swizzle
|= 3 << (k
*3);
735 Parse_ScalarSrcReg(struct parse_state
*parseState
, struct vp_src_register
*srcReg
)
740 srcReg
->RelAddr
= GL_FALSE
;
743 if (!Peek_Token(parseState
, token
))
745 if (token
[0] == '-') {
746 srcReg
->Negate
= GL_TRUE
;
747 (void) Parse_String(parseState
, "-"); /* consume '-' */
748 if (!Peek_Token(parseState
, token
))
752 srcReg
->Negate
= GL_FALSE
;
755 /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
756 if (token
[0] == 'R') {
757 srcReg
->File
= PROGRAM_TEMPORARY
;
758 if (!Parse_TempReg(parseState
, &idx
))
762 else if (token
[0] == 'c') {
763 if (!Parse_ParamReg(parseState
, srcReg
))
766 else if (token
[0] == 'v') {
767 srcReg
->File
= PROGRAM_INPUT
;
768 if (!Parse_AttribReg(parseState
, &idx
))
773 RETURN_ERROR2("Bad source register name", token
);
776 /* Look for .[xyzw] suffix */
777 if (!Parse_String(parseState
, "."))
780 if (!Parse_Token(parseState
, token
))
783 if (token
[0] == 'x' && token
[1] == 0) {
786 else if (token
[0] == 'y' && token
[1] == 0) {
789 else if (token
[0] == 'z' && token
[1] == 0) {
792 else if (token
[0] == 'w' && token
[1] == 0) {
796 RETURN_ERROR1("Bad scalar source suffix");
804 Parse_UnaryOpInstruction(struct parse_state
*parseState
,
805 struct vp_instruction
*inst
, enum vp_opcode opcode
)
807 if (opcode
== VP_OPCODE_ABS
&& !parseState
->isVersion1_1
)
808 RETURN_ERROR1("ABS illegal for vertex program 1.0");
810 inst
->Opcode
= opcode
;
811 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
814 if (!Parse_MaskedDstReg(parseState
, &inst
->DstReg
))
818 if (!Parse_String(parseState
, ","))
822 if (!Parse_SwizzleSrcReg(parseState
, &inst
->SrcReg
[0]))
826 if (!Parse_String(parseState
, ";"))
834 Parse_BiOpInstruction(struct parse_state
*parseState
,
835 struct vp_instruction
*inst
, enum vp_opcode opcode
)
837 if (opcode
== VP_OPCODE_DPH
&& !parseState
->isVersion1_1
)
838 RETURN_ERROR1("DPH illegal for vertex program 1.0");
839 if (opcode
== VP_OPCODE_SUB
&& !parseState
->isVersion1_1
)
840 RETURN_ERROR1("SUB illegal for vertex program 1.0");
842 inst
->Opcode
= opcode
;
843 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
846 if (!Parse_MaskedDstReg(parseState
, &inst
->DstReg
))
850 if (!Parse_String(parseState
, ","))
854 if (!Parse_SwizzleSrcReg(parseState
, &inst
->SrcReg
[0]))
858 if (!Parse_String(parseState
, ","))
862 if (!Parse_SwizzleSrcReg(parseState
, &inst
->SrcReg
[1]))
866 if (!Parse_String(parseState
, ";"))
869 /* make sure we don't reference more than one program parameter register */
870 if (inst
->SrcReg
[0].File
== PROGRAM_ENV_PARAM
&&
871 inst
->SrcReg
[1].File
== PROGRAM_ENV_PARAM
&&
872 inst
->SrcReg
[0].Index
!= inst
->SrcReg
[1].Index
)
873 RETURN_ERROR1("Can't reference two program parameter registers");
875 /* make sure we don't reference more than one vertex attribute register */
876 if (inst
->SrcReg
[0].File
== PROGRAM_INPUT
&&
877 inst
->SrcReg
[1].File
== PROGRAM_INPUT
&&
878 inst
->SrcReg
[0].Index
!= inst
->SrcReg
[1].Index
)
879 RETURN_ERROR1("Can't reference two vertex attribute registers");
886 Parse_TriOpInstruction(struct parse_state
*parseState
,
887 struct vp_instruction
*inst
, enum vp_opcode opcode
)
889 inst
->Opcode
= opcode
;
890 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
893 if (!Parse_MaskedDstReg(parseState
, &inst
->DstReg
))
897 if (!Parse_String(parseState
, ","))
901 if (!Parse_SwizzleSrcReg(parseState
, &inst
->SrcReg
[0]))
905 if (!Parse_String(parseState
, ","))
909 if (!Parse_SwizzleSrcReg(parseState
, &inst
->SrcReg
[1]))
913 if (!Parse_String(parseState
, ","))
917 if (!Parse_SwizzleSrcReg(parseState
, &inst
->SrcReg
[2]))
921 if (!Parse_String(parseState
, ";"))
924 /* make sure we don't reference more than one program parameter register */
925 if ((inst
->SrcReg
[0].File
== PROGRAM_ENV_PARAM
&&
926 inst
->SrcReg
[1].File
== PROGRAM_ENV_PARAM
&&
927 inst
->SrcReg
[0].Index
!= inst
->SrcReg
[1].Index
) ||
928 (inst
->SrcReg
[0].File
== PROGRAM_ENV_PARAM
&&
929 inst
->SrcReg
[2].File
== PROGRAM_ENV_PARAM
&&
930 inst
->SrcReg
[0].Index
!= inst
->SrcReg
[2].Index
) ||
931 (inst
->SrcReg
[1].File
== PROGRAM_ENV_PARAM
&&
932 inst
->SrcReg
[2].File
== PROGRAM_ENV_PARAM
&&
933 inst
->SrcReg
[1].Index
!= inst
->SrcReg
[2].Index
))
934 RETURN_ERROR1("Can only reference one program register");
936 /* make sure we don't reference more than one vertex attribute register */
937 if ((inst
->SrcReg
[0].File
== PROGRAM_INPUT
&&
938 inst
->SrcReg
[1].File
== PROGRAM_INPUT
&&
939 inst
->SrcReg
[0].Index
!= inst
->SrcReg
[1].Index
) ||
940 (inst
->SrcReg
[0].File
== PROGRAM_INPUT
&&
941 inst
->SrcReg
[2].File
== PROGRAM_INPUT
&&
942 inst
->SrcReg
[0].Index
!= inst
->SrcReg
[2].Index
) ||
943 (inst
->SrcReg
[1].File
== PROGRAM_INPUT
&&
944 inst
->SrcReg
[2].File
== PROGRAM_INPUT
&&
945 inst
->SrcReg
[1].Index
!= inst
->SrcReg
[2].Index
))
946 RETURN_ERROR1("Can only reference one input register");
953 Parse_ScalarInstruction(struct parse_state
*parseState
,
954 struct vp_instruction
*inst
, enum vp_opcode opcode
)
956 if (opcode
== VP_OPCODE_RCC
&& !parseState
->isVersion1_1
)
957 RETURN_ERROR1("RCC illegal for vertex program 1.0");
959 inst
->Opcode
= opcode
;
960 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
963 if (!Parse_MaskedDstReg(parseState
, &inst
->DstReg
))
967 if (!Parse_String(parseState
, ","))
971 if (!Parse_ScalarSrcReg(parseState
, &inst
->SrcReg
[0]))
975 if (!Parse_String(parseState
, ";"))
983 Parse_AddressInstruction(struct parse_state
*parseState
, struct vp_instruction
*inst
)
985 inst
->Opcode
= VP_OPCODE_ARL
;
986 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
989 if (!Parse_AddrReg(parseState
))
993 if (!Parse_String(parseState
, ","))
997 if (!Parse_ScalarSrcReg(parseState
, &inst
->SrcReg
[0]))
1001 if (!Parse_String(parseState
, ";"))
1009 Parse_EndInstruction(struct parse_state
*parseState
, struct vp_instruction
*inst
)
1013 inst
->Opcode
= VP_OPCODE_END
;
1014 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
1016 /* this should fail! */
1017 if (Parse_Token(parseState
, token
))
1018 RETURN_ERROR2("Unexpected token after END:", token
);
1025 * The PRINT instruction is Mesa-specific and is meant as a debugging aid for
1026 * the vertex program developer.
1027 * The NV_vertex_program extension grammar is modified as follows:
1029 * <instruction> ::= <ARL-instruction>
1031 * | <PRINT-instruction>
1033 * <PRINT-instruction> ::= "PRINT" <string literal>
1034 * | "PRINT" <string literal> "," <srcReg>
1035 * | "PRINT" <string literal> "," <dstReg>
1038 Parse_PrintInstruction(struct parse_state
*parseState
, struct vp_instruction
*inst
)
1044 struct vp_src_register
*srcReg
= &inst
->SrcReg
[0];
1047 inst
->Opcode
= VP_OPCODE_PRINT
;
1048 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
1050 /* The first argument is a literal string 'just like this' */
1051 if (!Parse_String(parseState
, "'"))
1054 str
= parseState
->pos
;
1055 for (len
= 0; str
[len
] != '\''; len
++) /* find closing quote */
1057 parseState
->pos
+= len
+ 1;
1058 msg
= _mesa_malloc(len
+ 1);
1060 _mesa_memcpy(msg
, str
, len
);
1065 if (Parse_String(parseState
, ",")) {
1067 /* The second argument is a register name */
1068 if (!Peek_Token(parseState
, token
))
1071 srcReg
->RelAddr
= GL_FALSE
;
1072 srcReg
->Negate
= GL_FALSE
;
1073 srcReg
->Swizzle
= SWIZZLE_NOOP
;
1075 /* Register can be R<n>, c[n], c[n +/- offset], a named vertex attrib,
1076 * or an o[n] output register.
1078 if (token
[0] == 'R') {
1079 srcReg
->File
= PROGRAM_TEMPORARY
;
1080 if (!Parse_TempReg(parseState
, &idx
))
1082 srcReg
->Index
= idx
;
1084 else if (token
[0] == 'c') {
1085 srcReg
->File
= PROGRAM_ENV_PARAM
;
1086 if (!Parse_ParamReg(parseState
, srcReg
))
1089 else if (token
[0] == 'v') {
1090 srcReg
->File
= PROGRAM_INPUT
;
1091 if (!Parse_AttribReg(parseState
, &idx
))
1093 srcReg
->Index
= idx
;
1095 else if (token
[0] == 'o') {
1096 srcReg
->File
= PROGRAM_OUTPUT
;
1097 if (!Parse_OutputReg(parseState
, &idx
))
1099 srcReg
->Index
= idx
;
1102 RETURN_ERROR2("Bad source register name", token
);
1110 if (!Parse_String(parseState
, ";"))
1118 Parse_OptionSequence(struct parse_state
*parseState
,
1119 struct vp_instruction program
[])
1123 if (!Parse_String(parseState
, "OPTION"))
1124 return GL_TRUE
; /* ok, not an OPTION statement */
1125 if (Parse_String(parseState
, "NV_position_invariant")) {
1126 parseState
->isPositionInvariant
= GL_TRUE
;
1129 RETURN_ERROR1("unexpected OPTION statement");
1131 if (!Parse_String(parseState
, ";"))
1138 Parse_InstructionSequence(struct parse_state
*parseState
,
1139 struct vp_instruction program
[])
1142 struct vp_instruction
*inst
= program
+ parseState
->numInst
;
1144 /* Initialize the instruction */
1145 inst
->SrcReg
[0].File
= (enum register_file
) -1;
1146 inst
->SrcReg
[1].File
= (enum register_file
) -1;
1147 inst
->SrcReg
[2].File
= (enum register_file
) -1;
1148 inst
->DstReg
.File
= (enum register_file
) -1;
1151 if (Parse_String(parseState
, "MOV")) {
1152 if (!Parse_UnaryOpInstruction(parseState
, inst
, VP_OPCODE_MOV
))
1155 else if (Parse_String(parseState
, "LIT")) {
1156 if (!Parse_UnaryOpInstruction(parseState
, inst
, VP_OPCODE_LIT
))
1159 else if (Parse_String(parseState
, "ABS")) {
1160 if (!Parse_UnaryOpInstruction(parseState
, inst
, VP_OPCODE_ABS
))
1163 else if (Parse_String(parseState
, "MUL")) {
1164 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_MUL
))
1167 else if (Parse_String(parseState
, "ADD")) {
1168 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_ADD
))
1171 else if (Parse_String(parseState
, "DP3")) {
1172 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DP3
))
1175 else if (Parse_String(parseState
, "DP4")) {
1176 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DP4
))
1179 else if (Parse_String(parseState
, "DST")) {
1180 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DST
))
1183 else if (Parse_String(parseState
, "MIN")) {
1184 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_MIN
))
1187 else if (Parse_String(parseState
, "MAX")) {
1188 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_MAX
))
1191 else if (Parse_String(parseState
, "SLT")) {
1192 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_SLT
))
1195 else if (Parse_String(parseState
, "SGE")) {
1196 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_SGE
))
1199 else if (Parse_String(parseState
, "DPH")) {
1200 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DPH
))
1203 else if (Parse_String(parseState
, "SUB")) {
1204 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_SUB
))
1207 else if (Parse_String(parseState
, "MAD")) {
1208 if (!Parse_TriOpInstruction(parseState
, inst
, VP_OPCODE_MAD
))
1211 else if (Parse_String(parseState
, "RCP")) {
1212 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_RCP
))
1215 else if (Parse_String(parseState
, "RSQ")) {
1216 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_RSQ
))
1219 else if (Parse_String(parseState
, "EXP")) {
1220 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_EXP
))
1223 else if (Parse_String(parseState
, "LOG")) {
1224 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_LOG
))
1227 else if (Parse_String(parseState
, "RCC")) {
1228 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_RCC
))
1231 else if (Parse_String(parseState
, "ARL")) {
1232 if (!Parse_AddressInstruction(parseState
, inst
))
1235 else if (Parse_String(parseState
, "PRINT")) {
1236 if (!Parse_PrintInstruction(parseState
, inst
))
1239 else if (Parse_String(parseState
, "END")) {
1240 if (!Parse_EndInstruction(parseState
, inst
))
1243 parseState
->numInst
++;
1244 return GL_TRUE
; /* all done */
1248 /* bad instruction name */
1249 RETURN_ERROR1("Unexpected token");
1252 /* examine input/output registers */
1253 if (inst
->DstReg
.File
== PROGRAM_OUTPUT
)
1254 parseState
->outputsWritten
|= (1 << inst
->DstReg
.Index
);
1255 else if (inst
->DstReg
.File
== PROGRAM_ENV_PARAM
)
1256 parseState
->anyProgRegsWritten
= GL_TRUE
;
1258 if (inst
->SrcReg
[0].File
== PROGRAM_INPUT
)
1259 parseState
->inputsRead
|= (1 << inst
->SrcReg
[0].Index
);
1260 if (inst
->SrcReg
[1].File
== PROGRAM_INPUT
)
1261 parseState
->inputsRead
|= (1 << inst
->SrcReg
[1].Index
);
1262 if (inst
->SrcReg
[2].File
== PROGRAM_INPUT
)
1263 parseState
->inputsRead
|= (1 << inst
->SrcReg
[2].Index
);
1265 parseState
->numInst
++;
1267 if (parseState
->numInst
>= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
)
1268 RETURN_ERROR1("Program too long");
1276 Parse_Program(struct parse_state
*parseState
,
1277 struct vp_instruction instBuffer
[])
1279 if (parseState
->isVersion1_1
) {
1280 if (!Parse_OptionSequence(parseState
, instBuffer
)) {
1284 return Parse_InstructionSequence(parseState
, instBuffer
);
1289 * Parse/compile the 'str' returning the compiled 'program'.
1290 * ctx->Program.ErrorPos will be -1 if successful. Otherwise, ErrorPos
1291 * indicates the position of the error in 'str'.
1294 _mesa_parse_nv_vertex_program(GLcontext
*ctx
, GLenum dstTarget
,
1295 const GLubyte
*str
, GLsizei len
,
1296 struct vertex_program
*program
)
1298 struct parse_state parseState
;
1299 struct vp_instruction instBuffer
[MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
];
1300 struct vp_instruction
*newInst
;
1302 GLubyte
*programString
;
1304 /* Make a null-terminated copy of the program string */
1305 programString
= (GLubyte
*) MALLOC(len
+ 1);
1306 if (!programString
) {
1307 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glLoadProgramNV");
1310 MEMCPY(programString
, str
, len
);
1311 programString
[len
] = 0;
1313 /* Get ready to parse */
1314 parseState
.ctx
= ctx
;
1315 parseState
.start
= programString
;
1316 parseState
.isPositionInvariant
= GL_FALSE
;
1317 parseState
.isVersion1_1
= GL_FALSE
;
1318 parseState
.numInst
= 0;
1319 parseState
.inputsRead
= 0;
1320 parseState
.outputsWritten
= 0;
1321 parseState
.anyProgRegsWritten
= GL_FALSE
;
1323 /* Reset error state */
1324 _mesa_set_program_error(ctx
, -1, NULL
);
1326 /* check the program header */
1327 if (_mesa_strncmp((const char *) programString
, "!!VP1.0", 7) == 0) {
1328 target
= GL_VERTEX_PROGRAM_NV
;
1329 parseState
.pos
= programString
+ 7;
1330 parseState
.isStateProgram
= GL_FALSE
;
1332 else if (_mesa_strncmp((const char *) programString
, "!!VP1.1", 7) == 0) {
1333 target
= GL_VERTEX_PROGRAM_NV
;
1334 parseState
.pos
= programString
+ 7;
1335 parseState
.isStateProgram
= GL_FALSE
;
1336 parseState
.isVersion1_1
= GL_TRUE
;
1338 else if (_mesa_strncmp((const char *) programString
, "!!VSP1.0", 8) == 0) {
1339 target
= GL_VERTEX_STATE_PROGRAM_NV
;
1340 parseState
.pos
= programString
+ 8;
1341 parseState
.isStateProgram
= GL_TRUE
;
1344 /* invalid header */
1345 ctx
->Program
.ErrorPos
= 0;
1346 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glLoadProgramNV(bad header)");
1350 /* make sure target and header match */
1351 if (target
!= dstTarget
) {
1352 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1353 "glLoadProgramNV(target mismatch)");
1358 if (Parse_Program(&parseState
, instBuffer
)) {
1359 /* successful parse! */
1361 if (parseState
.isStateProgram
) {
1362 if (!parseState
.anyProgRegsWritten
) {
1363 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1364 "glLoadProgramNV(c[#] not written)");
1369 if (!parseState
.isPositionInvariant
&&
1370 !(parseState
.outputsWritten
& 1)) {
1371 /* bit 1 = HPOS register */
1372 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1373 "glLoadProgramNV(HPOS not written)");
1378 /* copy the compiled instructions */
1379 assert(parseState
.numInst
<= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
);
1380 newInst
= (struct vp_instruction
*)
1381 MALLOC(parseState
.numInst
* sizeof(struct vp_instruction
));
1383 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glLoadProgramNV");
1384 FREE(programString
);
1385 return; /* out of memory */
1387 MEMCPY(newInst
, instBuffer
,
1388 parseState
.numInst
* sizeof(struct vp_instruction
));
1390 /* install the program */
1391 program
->Base
.Target
= target
;
1392 if (program
->Base
.String
) {
1393 FREE(program
->Base
.String
);
1395 program
->Base
.String
= programString
;
1396 program
->Base
.Format
= GL_PROGRAM_FORMAT_ASCII_ARB
;
1397 if (program
->Instructions
) {
1398 FREE(program
->Instructions
);
1400 program
->Instructions
= newInst
;
1401 program
->InputsRead
= parseState
.inputsRead
;
1402 program
->OutputsWritten
= parseState
.outputsWritten
;
1403 program
->IsPositionInvariant
= parseState
.isPositionInvariant
;
1404 program
->IsNVProgram
= GL_TRUE
;
1407 _mesa_printf("--- glLoadProgramNV result ---\n");
1408 _mesa_print_nv_vertex_program(program
);
1409 _mesa_printf("------------------------------\n");
1414 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glLoadProgramNV");
1415 /* NOTE: _mesa_set_program_error would have been called already */
1416 /* GL_NV_vertex_program isn't supposed to set the error string
1417 * so we reset it here.
1419 _mesa_set_program_error(ctx
, ctx
->Program
.ErrorPos
, NULL
);
1425 PrintSrcReg(const struct vp_src_register
*src
)
1427 static const char comps
[5] = "xyzw";
1432 _mesa_printf("c[A0.x + %d]", src
->Index
);
1433 else if (src
->Index
< 0)
1434 _mesa_printf("c[A0.x - %d]", -src
->Index
);
1436 _mesa_printf("c[A0.x]");
1438 else if (src
->File
== PROGRAM_OUTPUT
) {
1439 _mesa_printf("o[%s]", OutputRegisters
[src
->Index
]);
1441 else if (src
->File
== PROGRAM_INPUT
) {
1442 _mesa_printf("v[%s]", InputRegisters
[src
->Index
]);
1444 else if (src
->File
== PROGRAM_ENV_PARAM
) {
1445 _mesa_printf("c[%d]", src
->Index
);
1448 ASSERT(src
->File
== PROGRAM_TEMPORARY
);
1449 _mesa_printf("R%d", src
->Index
);
1452 if (GET_SWZ(src
->Swizzle
, 0) == GET_SWZ(src
->Swizzle
, 1) &&
1453 GET_SWZ(src
->Swizzle
, 0) == GET_SWZ(src
->Swizzle
, 2) &&
1454 GET_SWZ(src
->Swizzle
, 0) == GET_SWZ(src
->Swizzle
, 3)) {
1455 _mesa_printf(".%c", comps
[GET_SWZ(src
->Swizzle
, 0)]);
1457 else if (src
->Swizzle
!= SWIZZLE_NOOP
) {
1458 _mesa_printf(".%c%c%c%c",
1459 comps
[GET_SWZ(src
->Swizzle
, 0)],
1460 comps
[GET_SWZ(src
->Swizzle
, 1)],
1461 comps
[GET_SWZ(src
->Swizzle
, 2)],
1462 comps
[GET_SWZ(src
->Swizzle
, 3)]);
1468 PrintDstReg(const struct vp_dst_register
*dst
)
1470 if (dst
->File
== PROGRAM_OUTPUT
) {
1471 _mesa_printf("o[%s]", OutputRegisters
[dst
->Index
]);
1473 else if (dst
->File
== PROGRAM_INPUT
) {
1474 _mesa_printf("v[%s]", InputRegisters
[dst
->Index
]);
1476 else if (dst
->File
== PROGRAM_ENV_PARAM
) {
1477 _mesa_printf("c[%d]", dst
->Index
);
1480 ASSERT(dst
->File
== PROGRAM_TEMPORARY
);
1481 _mesa_printf("R%d", dst
->Index
);
1484 if (dst
->WriteMask
!= 0 && dst
->WriteMask
!= 0xf) {
1486 if (dst
->WriteMask
& 0x1)
1488 if (dst
->WriteMask
& 0x2)
1490 if (dst
->WriteMask
& 0x4)
1492 if (dst
->WriteMask
& 0x8)
1499 * Print a single NVIDIA vertex program instruction.
1502 _mesa_print_nv_vertex_instruction(const struct vp_instruction
*inst
)
1504 switch (inst
->Opcode
) {
1513 _mesa_printf("%s ", Opcodes
[(int) inst
->Opcode
]);
1514 PrintDstReg(&inst
->DstReg
);
1516 PrintSrcReg(&inst
->SrcReg
[0]);
1517 _mesa_printf(";\n");
1530 _mesa_printf("%s ", Opcodes
[(int) inst
->Opcode
]);
1531 PrintDstReg(&inst
->DstReg
);
1533 PrintSrcReg(&inst
->SrcReg
[0]);
1535 PrintSrcReg(&inst
->SrcReg
[1]);
1536 _mesa_printf(";\n");
1539 _mesa_printf("MAD ");
1540 PrintDstReg(&inst
->DstReg
);
1542 PrintSrcReg(&inst
->SrcReg
[0]);
1544 PrintSrcReg(&inst
->SrcReg
[1]);
1546 PrintSrcReg(&inst
->SrcReg
[2]);
1547 _mesa_printf(";\n");
1550 _mesa_printf("ARL A0.x, ");
1551 PrintSrcReg(&inst
->SrcReg
[0]);
1552 _mesa_printf(";\n");
1554 case VP_OPCODE_PRINT
:
1555 _mesa_printf("PRINT '%s'", inst
->Data
);
1556 if (inst
->SrcReg
[0].File
) {
1558 PrintSrcReg(&inst
->SrcReg
[0]);
1559 _mesa_printf(";\n");
1566 _mesa_printf("END\n");
1569 _mesa_printf("BAD INSTRUCTION\n");
1575 * Print (unparse) the given vertex program. Just for debugging.
1578 _mesa_print_nv_vertex_program(const struct vertex_program
*program
)
1580 const struct vp_instruction
*inst
;
1582 for (inst
= program
->Instructions
; ; inst
++) {
1583 _mesa_print_nv_vertex_instruction(inst
);
1584 if (inst
->Opcode
== VP_OPCODE_END
)
1591 _mesa_nv_vertex_input_register_name(GLuint i
)
1593 ASSERT(i
< MAX_NV_VERTEX_PROGRAM_INPUTS
);
1594 return InputRegisters
[i
];
1599 _mesa_nv_vertex_output_register_name(GLuint i
)
1601 ASSERT(i
< MAX_NV_VERTEX_PROGRAM_OUTPUTS
);
1602 return OutputRegisters
[i
];