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
= _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
)
567 /* Dst reg can be R<n> or o[n] */
568 if (!Peek_Token(parseState
, token
))
571 if (token
[0] == 'R') {
572 /* a temporary register */
573 dstReg
->File
= PROGRAM_TEMPORARY
;
574 if (!Parse_TempReg(parseState
, &dstReg
->Index
))
577 else if (!parseState
->isStateProgram
&& token
[0] == 'o') {
578 /* an output register */
579 dstReg
->File
= PROGRAM_OUTPUT
;
580 if (!Parse_OutputReg(parseState
, &dstReg
->Index
))
583 else if (parseState
->isStateProgram
&& token
[0] == 'c' &&
584 parseState
->isStateProgram
) {
585 /* absolute program parameter register */
586 /* Only valid for vertex state programs */
587 dstReg
->File
= PROGRAM_ENV_PARAM
;
588 if (!Parse_AbsParamReg(parseState
, &dstReg
->Index
))
592 RETURN_ERROR1("Bad destination register name");
595 /* Parse optional write mask */
596 if (!Peek_Token(parseState
, token
))
599 if (token
[0] == '.') {
603 if (!Parse_String(parseState
, "."))
606 if (!Parse_Token(parseState
, token
))
609 dstReg
->WriteMask
[0] = GL_FALSE
;
610 dstReg
->WriteMask
[1] = GL_FALSE
;
611 dstReg
->WriteMask
[2] = GL_FALSE
;
612 dstReg
->WriteMask
[3] = GL_FALSE
;
614 if (token
[k
] == 'x') {
615 dstReg
->WriteMask
[0] = GL_TRUE
;
618 if (token
[k
] == 'y') {
619 dstReg
->WriteMask
[1] = GL_TRUE
;
622 if (token
[k
] == 'z') {
623 dstReg
->WriteMask
[2] = GL_TRUE
;
626 if (token
[k
] == 'w') {
627 dstReg
->WriteMask
[3] = GL_TRUE
;
631 RETURN_ERROR1("Bad writemask character");
636 dstReg
->WriteMask
[0] = GL_TRUE
;
637 dstReg
->WriteMask
[1] = GL_TRUE
;
638 dstReg
->WriteMask
[2] = GL_TRUE
;
639 dstReg
->WriteMask
[3] = GL_TRUE
;
646 Parse_SwizzleSrcReg(struct parse_state
*parseState
, struct vp_src_register
*srcReg
)
650 srcReg
->RelAddr
= GL_FALSE
;
653 if (!Peek_Token(parseState
, token
))
655 if (token
[0] == '-') {
656 (void) Parse_String(parseState
, "-");
657 srcReg
->Negate
= GL_TRUE
;
658 if (!Peek_Token(parseState
, token
))
662 srcReg
->Negate
= GL_FALSE
;
665 /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
666 if (token
[0] == 'R') {
667 srcReg
->File
= PROGRAM_TEMPORARY
;
668 if (!Parse_TempReg(parseState
, &srcReg
->Index
))
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
, &srcReg
->Index
))
681 RETURN_ERROR2("Bad source register name", token
);
684 /* init swizzle fields */
685 srcReg
->Swizzle
[0] = 0;
686 srcReg
->Swizzle
[1] = 1;
687 srcReg
->Swizzle
[2] = 2;
688 srcReg
->Swizzle
[3] = 3;
690 /* Look for optional swizzle suffix */
691 if (!Peek_Token(parseState
, token
))
693 if (token
[0] == '.') {
694 (void) Parse_String(parseState
, "."); /* consume . */
696 if (!Parse_Token(parseState
, token
))
700 /* single letter swizzle */
702 ASSIGN_4V(srcReg
->Swizzle
, 0, 0, 0, 0);
703 else if (token
[0] == 'y')
704 ASSIGN_4V(srcReg
->Swizzle
, 1, 1, 1, 1);
705 else if (token
[0] == 'z')
706 ASSIGN_4V(srcReg
->Swizzle
, 2, 2, 2, 2);
707 else if (token
[0] == 'w')
708 ASSIGN_4V(srcReg
->Swizzle
, 3, 3, 3, 3);
710 RETURN_ERROR1("Expected x, y, z, or w");
713 /* 2, 3 or 4-component swizzle */
715 for (k
= 0; token
[k
] && k
< 5; k
++) {
717 srcReg
->Swizzle
[k
] = 0;
718 else if (token
[k
] == 'y')
719 srcReg
->Swizzle
[k
] = 1;
720 else if (token
[k
] == 'z')
721 srcReg
->Swizzle
[k
] = 2;
722 else if (token
[k
] == 'w')
723 srcReg
->Swizzle
[k
] = 3;
737 Parse_ScalarSrcReg(struct parse_state
*parseState
, struct vp_src_register
*srcReg
)
741 srcReg
->RelAddr
= GL_FALSE
;
744 if (!Peek_Token(parseState
, token
))
746 if (token
[0] == '-') {
747 srcReg
->Negate
= GL_TRUE
;
748 (void) Parse_String(parseState
, "-"); /* consume '-' */
749 if (!Peek_Token(parseState
, token
))
753 srcReg
->Negate
= GL_FALSE
;
756 /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
757 if (token
[0] == 'R') {
758 srcReg
->File
= PROGRAM_TEMPORARY
;
759 if (!Parse_TempReg(parseState
, &srcReg
->Index
))
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
, &srcReg
->Index
))
772 RETURN_ERROR2("Bad source register name", token
);
775 /* Look for .[xyzw] suffix */
776 if (!Parse_String(parseState
, "."))
779 if (!Parse_Token(parseState
, token
))
782 if (token
[0] == 'x' && token
[1] == 0) {
783 srcReg
->Swizzle
[0] = 0;
785 else if (token
[0] == 'y' && token
[1] == 0) {
786 srcReg
->Swizzle
[0] = 1;
788 else if (token
[0] == 'z' && token
[1] == 0) {
789 srcReg
->Swizzle
[0] = 2;
791 else if (token
[0] == 'w' && token
[1] == 0) {
792 srcReg
->Swizzle
[0] = 3;
795 RETURN_ERROR1("Bad scalar source suffix");
797 srcReg
->Swizzle
[1] = srcReg
->Swizzle
[2] = srcReg
->Swizzle
[3] = 0;
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];
1046 inst
->Opcode
= VP_OPCODE_PRINT
;
1047 inst
->StringPos
= parseState
->curLine
- parseState
->start
;
1049 /* The first argument is a literal string 'just like this' */
1050 if (!Parse_String(parseState
, "'"))
1053 str
= parseState
->pos
;
1054 for (len
= 0; str
[len
] != '\''; len
++) /* find closing quote */
1056 parseState
->pos
+= len
+ 1;
1057 msg
= _mesa_malloc(len
+ 1);
1059 _mesa_memcpy(msg
, str
, len
);
1064 if (Parse_String(parseState
, ",")) {
1066 /* The second argument is a register name */
1067 if (!Peek_Token(parseState
, token
))
1070 srcReg
->RelAddr
= GL_FALSE
;
1071 srcReg
->Negate
= GL_FALSE
;
1072 srcReg
->Swizzle
[0] = 0;
1073 srcReg
->Swizzle
[1] = 1;
1074 srcReg
->Swizzle
[2] = 2;
1075 srcReg
->Swizzle
[3] = 3;
1077 /* Register can be R<n>, c[n], c[n +/- offset], a named vertex attrib,
1078 * or an o[n] output register.
1080 if (token
[0] == 'R') {
1081 srcReg
->File
= PROGRAM_TEMPORARY
;
1082 if (!Parse_TempReg(parseState
, &srcReg
->Index
))
1085 else if (token
[0] == 'c') {
1086 srcReg
->File
= PROGRAM_ENV_PARAM
;
1087 if (!Parse_ParamReg(parseState
, srcReg
))
1090 else if (token
[0] == 'v') {
1091 srcReg
->File
= PROGRAM_INPUT
;
1092 if (!Parse_AttribReg(parseState
, &srcReg
->Index
))
1095 else if (token
[0] == 'o') {
1096 srcReg
->File
= PROGRAM_OUTPUT
;
1097 if (!Parse_OutputReg(parseState
, &srcReg
->Index
))
1101 RETURN_ERROR2("Bad source register name", token
);
1109 if (!Parse_String(parseState
, ";"))
1117 Parse_OptionSequence(struct parse_state
*parseState
,
1118 struct vp_instruction program
[])
1122 if (!Parse_String(parseState
, "OPTION"))
1123 return GL_TRUE
; /* ok, not an OPTION statement */
1124 if (Parse_String(parseState
, "NV_position_invariant")) {
1125 parseState
->isPositionInvariant
= GL_TRUE
;
1128 RETURN_ERROR1("unexpected OPTION statement");
1130 if (!Parse_String(parseState
, ";"))
1137 Parse_InstructionSequence(struct parse_state
*parseState
,
1138 struct vp_instruction program
[])
1141 struct vp_instruction
*inst
= program
+ parseState
->numInst
;
1143 /* Initialize the instruction */
1144 inst
->SrcReg
[0].File
= (enum register_file
) -1;
1145 inst
->SrcReg
[1].File
= (enum register_file
) -1;
1146 inst
->SrcReg
[2].File
= (enum register_file
) -1;
1147 inst
->DstReg
.File
= (enum register_file
) -1;
1150 if (Parse_String(parseState
, "MOV")) {
1151 if (!Parse_UnaryOpInstruction(parseState
, inst
, VP_OPCODE_MOV
))
1154 else if (Parse_String(parseState
, "LIT")) {
1155 if (!Parse_UnaryOpInstruction(parseState
, inst
, VP_OPCODE_LIT
))
1158 else if (Parse_String(parseState
, "ABS")) {
1159 if (!Parse_UnaryOpInstruction(parseState
, inst
, VP_OPCODE_ABS
))
1162 else if (Parse_String(parseState
, "MUL")) {
1163 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_MUL
))
1166 else if (Parse_String(parseState
, "ADD")) {
1167 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_ADD
))
1170 else if (Parse_String(parseState
, "DP3")) {
1171 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DP3
))
1174 else if (Parse_String(parseState
, "DP4")) {
1175 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DP4
))
1178 else if (Parse_String(parseState
, "DST")) {
1179 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DST
))
1182 else if (Parse_String(parseState
, "MIN")) {
1183 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_MIN
))
1186 else if (Parse_String(parseState
, "MAX")) {
1187 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_MAX
))
1190 else if (Parse_String(parseState
, "SLT")) {
1191 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_SLT
))
1194 else if (Parse_String(parseState
, "SGE")) {
1195 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_SGE
))
1198 else if (Parse_String(parseState
, "DPH")) {
1199 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_DPH
))
1202 else if (Parse_String(parseState
, "SUB")) {
1203 if (!Parse_BiOpInstruction(parseState
, inst
, VP_OPCODE_SUB
))
1206 else if (Parse_String(parseState
, "MAD")) {
1207 if (!Parse_TriOpInstruction(parseState
, inst
, VP_OPCODE_MAD
))
1210 else if (Parse_String(parseState
, "RCP")) {
1211 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_RCP
))
1214 else if (Parse_String(parseState
, "RSQ")) {
1215 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_RSQ
))
1218 else if (Parse_String(parseState
, "EXP")) {
1219 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_EXP
))
1222 else if (Parse_String(parseState
, "LOG")) {
1223 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_LOG
))
1226 else if (Parse_String(parseState
, "RCC")) {
1227 if (!Parse_ScalarInstruction(parseState
, inst
, VP_OPCODE_RCC
))
1230 else if (Parse_String(parseState
, "ARL")) {
1231 if (!Parse_AddressInstruction(parseState
, inst
))
1234 else if (Parse_String(parseState
, "PRINT")) {
1235 if (!Parse_PrintInstruction(parseState
, inst
))
1238 else if (Parse_String(parseState
, "END")) {
1239 if (!Parse_EndInstruction(parseState
, inst
))
1242 parseState
->numInst
++;
1243 return GL_TRUE
; /* all done */
1247 /* bad instruction name */
1248 RETURN_ERROR1("Unexpected token");
1251 /* examine input/output registers */
1252 if (inst
->DstReg
.File
== PROGRAM_OUTPUT
)
1253 parseState
->outputsWritten
|= (1 << inst
->DstReg
.Index
);
1254 else if (inst
->DstReg
.File
== PROGRAM_ENV_PARAM
)
1255 parseState
->anyProgRegsWritten
= GL_TRUE
;
1257 if (inst
->SrcReg
[0].File
== PROGRAM_INPUT
)
1258 parseState
->inputsRead
|= (1 << inst
->SrcReg
[0].Index
);
1259 if (inst
->SrcReg
[1].File
== PROGRAM_INPUT
)
1260 parseState
->inputsRead
|= (1 << inst
->SrcReg
[1].Index
);
1261 if (inst
->SrcReg
[2].File
== PROGRAM_INPUT
)
1262 parseState
->inputsRead
|= (1 << inst
->SrcReg
[2].Index
);
1264 parseState
->numInst
++;
1266 if (parseState
->numInst
>= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
)
1267 RETURN_ERROR1("Program too long");
1275 Parse_Program(struct parse_state
*parseState
,
1276 struct vp_instruction instBuffer
[])
1278 if (parseState
->isVersion1_1
) {
1279 if (!Parse_OptionSequence(parseState
, instBuffer
)) {
1283 return Parse_InstructionSequence(parseState
, instBuffer
);
1288 * Parse/compile the 'str' returning the compiled 'program'.
1289 * ctx->Program.ErrorPos will be -1 if successful. Otherwise, ErrorPos
1290 * indicates the position of the error in 'str'.
1293 _mesa_parse_nv_vertex_program(GLcontext
*ctx
, GLenum dstTarget
,
1294 const GLubyte
*str
, GLsizei len
,
1295 struct vertex_program
*program
)
1297 struct parse_state parseState
;
1298 struct vp_instruction instBuffer
[MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
];
1299 struct vp_instruction
*newInst
;
1301 GLubyte
*programString
;
1303 /* Make a null-terminated copy of the program string */
1304 programString
= (GLubyte
*) MALLOC(len
+ 1);
1305 if (!programString
) {
1306 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glLoadProgramNV");
1309 MEMCPY(programString
, str
, len
);
1310 programString
[len
] = 0;
1312 /* Get ready to parse */
1313 parseState
.ctx
= ctx
;
1314 parseState
.start
= programString
;
1315 parseState
.isPositionInvariant
= GL_FALSE
;
1316 parseState
.isVersion1_1
= GL_FALSE
;
1317 parseState
.numInst
= 0;
1318 parseState
.inputsRead
= 0;
1319 parseState
.outputsWritten
= 0;
1320 parseState
.anyProgRegsWritten
= GL_FALSE
;
1322 /* Reset error state */
1323 _mesa_set_program_error(ctx
, -1, NULL
);
1325 /* check the program header */
1326 if (_mesa_strncmp((const char *) programString
, "!!VP1.0", 7) == 0) {
1327 target
= GL_VERTEX_PROGRAM_NV
;
1328 parseState
.pos
= programString
+ 7;
1329 parseState
.isStateProgram
= GL_FALSE
;
1331 else if (_mesa_strncmp((const char *) programString
, "!!VP1.1", 7) == 0) {
1332 target
= GL_VERTEX_PROGRAM_NV
;
1333 parseState
.pos
= programString
+ 7;
1334 parseState
.isStateProgram
= GL_FALSE
;
1335 parseState
.isVersion1_1
= GL_TRUE
;
1337 else if (_mesa_strncmp((const char *) programString
, "!!VSP1.0", 8) == 0) {
1338 target
= GL_VERTEX_STATE_PROGRAM_NV
;
1339 parseState
.pos
= programString
+ 8;
1340 parseState
.isStateProgram
= GL_TRUE
;
1343 /* invalid header */
1344 ctx
->Program
.ErrorPos
= 0;
1345 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glLoadProgramNV(bad header)");
1349 /* make sure target and header match */
1350 if (target
!= dstTarget
) {
1351 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1352 "glLoadProgramNV(target mismatch)");
1357 if (Parse_Program(&parseState
, instBuffer
)) {
1358 /* successful parse! */
1360 if (parseState
.isStateProgram
) {
1361 if (!parseState
.anyProgRegsWritten
) {
1362 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1363 "glLoadProgramNV(c[#] not written)");
1368 if (!parseState
.isPositionInvariant
&&
1369 !(parseState
.outputsWritten
& 1)) {
1370 /* bit 1 = HPOS register */
1371 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1372 "glLoadProgramNV(HPOS not written)");
1377 /* copy the compiled instructions */
1378 assert(parseState
.numInst
<= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS
);
1379 newInst
= (struct vp_instruction
*)
1380 MALLOC(parseState
.numInst
* sizeof(struct vp_instruction
));
1382 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glLoadProgramNV");
1383 FREE(programString
);
1384 return; /* out of memory */
1386 MEMCPY(newInst
, instBuffer
,
1387 parseState
.numInst
* sizeof(struct vp_instruction
));
1389 /* install the program */
1390 program
->Base
.Target
= target
;
1391 if (program
->Base
.String
) {
1392 FREE(program
->Base
.String
);
1394 program
->Base
.String
= programString
;
1395 program
->Base
.Format
= GL_PROGRAM_FORMAT_ASCII_ARB
;
1396 if (program
->Instructions
) {
1397 FREE(program
->Instructions
);
1399 program
->Instructions
= newInst
;
1400 program
->InputsRead
= parseState
.inputsRead
;
1401 program
->OutputsWritten
= parseState
.outputsWritten
;
1402 program
->IsPositionInvariant
= parseState
.isPositionInvariant
;
1403 program
->IsNVProgram
= GL_TRUE
;
1406 _mesa_printf("--- glLoadProgramNV result ---\n");
1407 _mesa_print_nv_vertex_program(program
);
1408 _mesa_printf("------------------------------\n");
1413 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glLoadProgramNV");
1414 /* NOTE: _mesa_set_program_error would have been called already */
1415 /* GL_NV_vertex_program isn't supposed to set the error string
1416 * so we reset it here.
1418 _mesa_set_program_error(ctx
, ctx
->Program
.ErrorPos
, NULL
);
1424 PrintSrcReg(const struct vp_src_register
*src
)
1426 static const char comps
[5] = "xyzw";
1431 _mesa_printf("c[A0.x + %d]", src
->Index
);
1432 else if (src
->Index
< 0)
1433 _mesa_printf("c[A0.x - %d]", -src
->Index
);
1435 _mesa_printf("c[A0.x]");
1437 else if (src
->File
== PROGRAM_OUTPUT
) {
1438 _mesa_printf("o[%s]", OutputRegisters
[src
->Index
]);
1440 else if (src
->File
== PROGRAM_INPUT
) {
1441 _mesa_printf("v[%s]", InputRegisters
[src
->Index
]);
1443 else if (src
->File
== PROGRAM_ENV_PARAM
) {
1444 _mesa_printf("c[%d]", src
->Index
);
1447 ASSERT(src
->File
== PROGRAM_TEMPORARY
);
1448 _mesa_printf("R%d", src
->Index
);
1451 if (src
->Swizzle
[0] == src
->Swizzle
[1] &&
1452 src
->Swizzle
[0] == src
->Swizzle
[2] &&
1453 src
->Swizzle
[0] == src
->Swizzle
[3]) {
1454 _mesa_printf(".%c", comps
[src
->Swizzle
[0]]);
1456 else if (src
->Swizzle
[0] != 0 ||
1457 src
->Swizzle
[1] != 1 ||
1458 src
->Swizzle
[2] != 2 ||
1459 src
->Swizzle
[3] != 3) {
1460 _mesa_printf(".%c%c%c%c",
1461 comps
[src
->Swizzle
[0]],
1462 comps
[src
->Swizzle
[1]],
1463 comps
[src
->Swizzle
[2]],
1464 comps
[src
->Swizzle
[3]]);
1470 PrintDstReg(const struct vp_dst_register
*dst
)
1472 GLint w
= dst
->WriteMask
[0] + dst
->WriteMask
[1]
1473 + dst
->WriteMask
[2] + dst
->WriteMask
[3];
1475 if (dst
->File
== PROGRAM_OUTPUT
) {
1476 _mesa_printf("o[%s]", OutputRegisters
[dst
->Index
]);
1478 else if (dst
->File
== PROGRAM_INPUT
) {
1479 _mesa_printf("v[%s]", InputRegisters
[dst
->Index
]);
1481 else if (dst
->File
== PROGRAM_ENV_PARAM
) {
1482 _mesa_printf("c[%d]", dst
->Index
);
1485 ASSERT(dst
->File
== PROGRAM_TEMPORARY
);
1486 _mesa_printf("R%d", dst
->Index
);
1489 if (w
!= 0 && w
!= 4) {
1491 if (dst
->WriteMask
[0])
1493 if (dst
->WriteMask
[1])
1495 if (dst
->WriteMask
[2])
1497 if (dst
->WriteMask
[3])
1504 * Print a single NVIDIA vertex program instruction.
1507 _mesa_print_nv_vertex_instruction(const struct vp_instruction
*inst
)
1509 switch (inst
->Opcode
) {
1518 _mesa_printf("%s ", Opcodes
[(int) inst
->Opcode
]);
1519 PrintDstReg(&inst
->DstReg
);
1521 PrintSrcReg(&inst
->SrcReg
[0]);
1522 _mesa_printf(";\n");
1535 _mesa_printf("%s ", Opcodes
[(int) inst
->Opcode
]);
1536 PrintDstReg(&inst
->DstReg
);
1538 PrintSrcReg(&inst
->SrcReg
[0]);
1540 PrintSrcReg(&inst
->SrcReg
[1]);
1541 _mesa_printf(";\n");
1544 _mesa_printf("MAD ");
1545 PrintDstReg(&inst
->DstReg
);
1547 PrintSrcReg(&inst
->SrcReg
[0]);
1549 PrintSrcReg(&inst
->SrcReg
[1]);
1551 PrintSrcReg(&inst
->SrcReg
[2]);
1552 _mesa_printf(";\n");
1555 _mesa_printf("ARL A0.x, ");
1556 PrintSrcReg(&inst
->SrcReg
[0]);
1557 _mesa_printf(";\n");
1559 case VP_OPCODE_PRINT
:
1560 _mesa_printf("PRINT '%s'", inst
->Data
);
1561 if (inst
->SrcReg
[0].File
) {
1563 PrintSrcReg(&inst
->SrcReg
[0]);
1564 _mesa_printf(";\n");
1571 _mesa_printf("END\n");
1574 _mesa_printf("BAD INSTRUCTION\n");
1580 * Print (unparse) the given vertex program. Just for debugging.
1583 _mesa_print_nv_vertex_program(const struct vertex_program
*program
)
1585 const struct vp_instruction
*inst
;
1587 for (inst
= program
->Instructions
; ; inst
++) {
1588 _mesa_print_nv_vertex_instruction(inst
);
1589 if (inst
->Opcode
== VP_OPCODE_END
)
1596 _mesa_nv_vertex_input_register_name(GLuint i
)
1598 ASSERT(i
< MAX_NV_VERTEX_PROGRAM_INPUTS
);
1599 return InputRegisters
[i
];
1604 _mesa_nv_vertex_output_register_name(GLuint i
)
1606 ASSERT(i
< MAX_NV_VERTEX_PROGRAM_OUTPUTS
);
1607 return OutputRegisters
[i
];