diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2003-02-23 05:24:39 +0000 |
---|---|---|
committer | Brian Paul <brian.paul@tungstengraphics.com> | 2003-02-23 05:24:39 +0000 |
commit | d804fd1f4d84369f3d26878912e6742fba23e028 (patch) | |
tree | 71ccf72cec924987842fdda11a9b18e01b883586 /src/mesa | |
parent | 25fea6be0a210199478da48dc7cb65a0f0f8a103 (diff) |
parser clean-ups (use struct parse_state)
Diffstat (limited to 'src/mesa')
-rw-r--r-- | src/mesa/main/nvvertparse.c | 777 |
1 files changed, 345 insertions, 432 deletions
diff --git a/src/mesa/main/nvvertparse.c b/src/mesa/main/nvvertparse.c index f0c51e2dddd..107f238eb16 100644 --- a/src/mesa/main/nvvertparse.c +++ b/src/mesa/main/nvvertparse.c @@ -1,4 +1,4 @@ -/* $Id: nvvertparse.c,v 1.1 2003/01/14 04:55:46 brianp Exp $ */ +/* $Id: nvvertparse.c,v 1.2 2003/02/23 05:24:39 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -42,72 +42,17 @@ #include "nvvertprog.h" -/************************ Symbol Table ******************************/ - -/* A simple symbol table implementation for ARB_vertex_program - * (not used yet) - */ - -#if 000 -struct symbol -{ - GLubyte *name; - GLint value; - struct symbol *next; +struct parse_state { + const GLubyte *pos; + GLboolean isStateProgram; + GLboolean isPositionInvariant; + GLboolean isVersion1_1; + GLuint inputsRead; + GLuint outputsWritten; + GLuint progRegsWritten; + GLuint numInst; /* number of instructions parsed */ }; -static struct symbol *SymbolTable = NULL; - -static GLboolean -IsSymbol(const GLubyte *symbol) -{ - struct symbol *s; - for (s = SymbolTable; s; s = s->next) { - if (strcmp((char *) symbol, (char *)s->name) == 0) - return GL_TRUE; - } - return GL_FALSE; -} - -static GLint -GetSymbolValue(const GLubyte *symbol) -{ - struct symbol *s; - for (s = SymbolTable; s; s = s->next) { - if (strcmp((char *) symbol, (char *)s->name) == 0) - return s->value; - } - return 0; -} - -static void -AddSymbol(const GLubyte *symbol, GLint value) -{ - struct symbol *s = MALLOC_STRUCT(symbol); - if (s) { - s->name = (GLubyte *) strdup((char *) symbol); - s->value = value; - s->next = SymbolTable; - SymbolTable = s; - } -} - -static void -ResetSymbolTable(void) -{ - struct symbol *s, *next; - for (s = SymbolTable; s; s = next) { - next = s->next; - FREE(s->name); - FREE(s); - s = next; - } - SymbolTable = NULL; -} -#endif - -/***************************** Parsing ******************************/ - static GLboolean IsLetter(GLubyte b) { @@ -191,15 +136,15 @@ GetToken(const GLubyte *str, GLubyte *token) * Get next token from input stream and increment stream pointer past token. */ static GLboolean -Parse_Token(const GLubyte **s, GLubyte *token) +Parse_Token(struct parse_state *parseState, GLubyte *token) { GLint i; - i = GetToken(*s, token); + i = GetToken(parseState->pos, token); if (i <= 0) { - *s += (-i); + parseState->pos += (-i); return GL_FALSE; } - *s += i; + parseState->pos += i; return GL_TRUE; } @@ -208,16 +153,16 @@ Parse_Token(const GLubyte **s, GLubyte *token) * Get next token from input stream but don't increment stream pointer. */ static GLboolean -Peek_Token(const GLubyte **s, GLubyte *token) +Peek_Token(struct parse_state *parseState, GLubyte *token) { GLint i, len; - i = GetToken(*s, token); + i = GetToken(parseState->pos, token); if (i <= 0) { - *s += (-i); + parseState->pos += (-i); return GL_FALSE; } len = _mesa_strlen((char *) token); - *s += (i - len); + parseState->pos += (i - len); return GL_TRUE; } @@ -259,19 +204,19 @@ static const char *Opcodes[] = { #ifdef DEBUG -#define PARSE_ERROR \ +#define RETURN_ERROR \ do { \ _mesa_printf("vpparse.c error at %d: parse error\n", __LINE__); \ return GL_FALSE; \ } while(0) -#define PARSE_ERROR1(msg) \ +#define RETURN_ERROR1(msg) \ do { \ _mesa_printf("vpparse.c error at %d: %s\n", __LINE__, msg); \ return GL_FALSE; \ } while(0) -#define PARSE_ERROR2(msg1, msg2) \ +#define RETURN_ERROR2(msg1, msg2) \ do { \ _mesa_printf("vpparse.c error at %d: %s %s\n", __LINE__, msg1, msg2); \ return GL_FALSE; \ @@ -279,9 +224,9 @@ do { \ #else -#define PARSE_ERROR return GL_FALSE -#define PARSE_ERROR1(msg1) return GL_FALSE -#define PARSE_ERROR2(msg1, msg2) return GL_FALSE +#define RETURN_ERROR return GL_FALSE +#define RETURN_ERROR1(msg1) return GL_FALSE +#define RETURN_ERROR2(msg1, msg2) return GL_FALSE #endif @@ -306,43 +251,32 @@ IsOutputRegister(GLuint r) -/**********************************************************************/ - -/* XXX - * These shouldn't be globals as that makes the parser non-reentrant. - * We should really define a "ParserContext" class which contains these - * and the <s> pointer into the program text. - */ -static GLboolean IsStateProgram = GL_FALSE; -static GLboolean IsPositionInvariant = GL_FALSE; -static GLboolean IsVersion1_1 = GL_FALSE; - /** * Try to match 'pattern' as the next token after any whitespace/comments. */ static GLboolean -Parse_String(const GLubyte **s, const char *pattern) +Parse_String(struct parse_state *parseState, const char *pattern) { GLint i; /* skip whitespace and comments */ - while (IsWhitespace(**s) || **s == '#') { - if (**s == '#') { - while (**s && (**s != '\n' && **s != '\r')) { - *s += 1; + while (IsWhitespace(*parseState->pos) || *parseState->pos == '#') { + if (*parseState->pos == '#') { + while (*parseState->pos && (*parseState->pos != '\n' && *parseState->pos != '\r')) { + parseState->pos += 1; } } else { /* skip whitespace */ - *s += 1; + parseState->pos += 1; } } /* Try to match the pattern */ for (i = 0; pattern[i]; i++) { - if (**s != pattern[i]) - PARSE_ERROR2("failed to match", pattern); /* failure */ - *s += 1; + if (*parseState->pos != pattern[i]) + RETURN_ERROR2("failed to match", pattern); /* failure */ + parseState->pos += 1; } return GL_TRUE; /* success */ @@ -353,24 +287,24 @@ Parse_String(const GLubyte **s, const char *pattern) * Parse a temporary register: Rnn */ static GLboolean -Parse_TempReg(const GLubyte **s, GLint *tempRegNum) +Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum) { GLubyte token[100]; /* Should be 'R##' */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (token[0] != 'R') - PARSE_ERROR1("Expected R##"); + RETURN_ERROR1("Expected R##"); if (IsDigit(token[1])) { GLint reg = _mesa_atoi((char *) (token + 1)); if (reg >= VP_NUM_TEMP_REGS) - PARSE_ERROR1("Bad temporary register name"); + RETURN_ERROR1("Bad temporary register name"); *tempRegNum = VP_TEMP_REG_START + reg; } else { - PARSE_ERROR1("Bad temporary register name"); + RETURN_ERROR1("Bad temporary register name"); } return GL_TRUE; @@ -381,19 +315,19 @@ Parse_TempReg(const GLubyte **s, GLint *tempRegNum) * Parse address register "A0.x" */ static GLboolean -Parse_AddrReg(const GLubyte **s) +Parse_AddrReg(struct parse_state *parseState) { /* match 'A0' */ - if (!Parse_String(s, "A0")) - PARSE_ERROR; + if (!Parse_String(parseState, "A0")) + RETURN_ERROR; /* match '.' */ - if (!Parse_String(s, ".")) - PARSE_ERROR; + if (!Parse_String(parseState, ".")) + RETURN_ERROR; /* match 'x' */ - if (!Parse_String(s, "x")) - PARSE_ERROR; + if (!Parse_String(parseState, "x")) + RETURN_ERROR; return GL_TRUE; } @@ -403,95 +337,95 @@ Parse_AddrReg(const GLubyte **s) * Parse absolute program parameter register "c[##]" */ static GLboolean -Parse_AbsParamReg(const GLubyte **s, GLint *regNum) +Parse_AbsParamReg(struct parse_state *parseState, GLint *regNum) { GLubyte token[100]; - if (!Parse_String(s, "c")) - PARSE_ERROR; + if (!Parse_String(parseState, "c")) + RETURN_ERROR; - if (!Parse_String(s, "[")) - PARSE_ERROR; + if (!Parse_String(parseState, "[")) + RETURN_ERROR; - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (IsDigit(token[0])) { /* a numbered program parameter register */ GLint reg = _mesa_atoi((char *) token); if (reg >= VP_NUM_PROG_REGS) - PARSE_ERROR1("Bad constant program number"); + RETURN_ERROR1("Bad constant program number"); *regNum = VP_PROG_REG_START + reg; } else { - PARSE_ERROR; + RETURN_ERROR; } - if (!Parse_String(s, "]")) - PARSE_ERROR; + if (!Parse_String(parseState, "]")) + RETURN_ERROR; return GL_TRUE; } static GLboolean -Parse_ParamReg(const GLubyte **s, struct vp_src_register *srcReg) +Parse_ParamReg(struct parse_state *parseState, struct vp_src_register *srcReg) { GLubyte token[100]; - if (!Parse_String(s, "c")) - PARSE_ERROR; + if (!Parse_String(parseState, "c")) + RETURN_ERROR; - if (!Parse_String(s, "[")) - PARSE_ERROR; + if (!Parse_String(parseState, "[")) + RETURN_ERROR; - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (IsDigit(token[0])) { /* a numbered program parameter register */ GLint reg; - (void) Parse_Token(s, token); + (void) Parse_Token(parseState, token); reg = _mesa_atoi((char *) token); if (reg >= VP_NUM_PROG_REGS) - PARSE_ERROR1("Bad constant program number"); + RETURN_ERROR1("Bad constant program number"); srcReg->Register = VP_PROG_REG_START + reg; } else if (StrEq(token, (GLubyte *) "A0")) { /* address register "A0.x" */ - if (!Parse_AddrReg(s)) - PARSE_ERROR; + if (!Parse_AddrReg(parseState)) + RETURN_ERROR; srcReg->RelAddr = GL_TRUE; srcReg->Register = 0; /* Look for +/-N offset */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (token[0] == '-' || token[0] == '+') { const GLubyte sign = token[0]; - (void) Parse_Token(s, token); /* consume +/- */ + (void) Parse_Token(parseState, token); /* consume +/- */ /* an integer should be next */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (IsDigit(token[0])) { const GLint k = _mesa_atoi((char *) token); if (sign == '-') { if (k > 64) - PARSE_ERROR1("Bad address offset"); + RETURN_ERROR1("Bad address offset"); srcReg->Register = -k; } else { if (k > 63) - PARSE_ERROR1("Bad address offset"); + RETURN_ERROR1("Bad address offset"); srcReg->Register = k; } } else { - PARSE_ERROR; + RETURN_ERROR; } } else { @@ -499,12 +433,12 @@ Parse_ParamReg(const GLubyte **s, struct vp_src_register *srcReg) } } else { - PARSE_ERROR; + RETURN_ERROR; } /* Match closing ']' */ - if (!Parse_String(s, "]")) - PARSE_ERROR; + if (!Parse_String(parseState, "]")) + RETURN_ERROR; return GL_TRUE; } @@ -514,30 +448,30 @@ Parse_ParamReg(const GLubyte **s, struct vp_src_register *srcReg) * Parse v[#] or v[<name>] */ static GLboolean -Parse_AttribReg(const GLubyte **s, GLint *tempRegNum) +Parse_AttribReg(struct parse_state *parseState, GLint *tempRegNum) { GLubyte token[100]; GLint j; /* Match 'v' */ - if (!Parse_String(s, "v")) - PARSE_ERROR; + if (!Parse_String(parseState, "v")) + RETURN_ERROR; /* Match '[' */ - if (!Parse_String(s, "[")) - PARSE_ERROR; + if (!Parse_String(parseState, "[")) + RETURN_ERROR; /* match number or named register */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; - if (IsStateProgram && token[0] != '0') - PARSE_ERROR1("Only v[0] accessible in vertex state programs"); + if (parseState->isStateProgram && token[0] != '0') + RETURN_ERROR1("Only v[0] accessible in vertex state programs"); if (IsDigit(token[0])) { GLint reg = _mesa_atoi((char *) token); if (reg >= VP_NUM_INPUT_REGS) - PARSE_ERROR1("Bad vertex attribute register name"); + RETURN_ERROR1("Bad vertex attribute register name"); *tempRegNum = VP_INPUT_REG_START + reg; } else { @@ -549,37 +483,37 @@ Parse_AttribReg(const GLubyte **s, GLint *tempRegNum) } if (!InputRegisters[j]) { /* unknown input register label */ - PARSE_ERROR2("Bad register name", token); + RETURN_ERROR2("Bad register name", token); } } /* Match '[' */ - if (!Parse_String(s, "]")) - PARSE_ERROR; + if (!Parse_String(parseState, "]")) + RETURN_ERROR; return GL_TRUE; } static GLboolean -Parse_OutputReg(const GLubyte **s, GLint *outputRegNum) +Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum) { GLubyte token[100]; GLint start, j; /* Match 'o' */ - if (!Parse_String(s, "o")) - PARSE_ERROR; + if (!Parse_String(parseState, "o")) + RETURN_ERROR; /* Match '[' */ - if (!Parse_String(s, "[")) - PARSE_ERROR; + if (!Parse_String(parseState, "[")) + RETURN_ERROR; /* Get output reg name */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; - if (IsPositionInvariant) + if (parseState->isPositionInvariant) start = 1; /* skip HPOS register name */ else start = 0; @@ -592,57 +526,57 @@ Parse_OutputReg(const GLubyte **s, GLint *outputRegNum) } } if (!OutputRegisters[j]) - PARSE_ERROR1("Unrecognized output register name"); + RETURN_ERROR1("Unrecognized output register name"); /* Match ']' */ - if (!Parse_String(s, "]")) - PARSE_ERROR1("Expected ]"); + if (!Parse_String(parseState, "]")) + RETURN_ERROR1("Expected ]"); return GL_TRUE; } static GLboolean -Parse_MaskedDstReg(const GLubyte **s, struct vp_dst_register *dstReg) +Parse_MaskedDstReg(struct parse_state *parseState, struct vp_dst_register *dstReg) { GLubyte token[100]; /* Dst reg can be R<n> or o[n] */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (token[0] == 'R') { /* a temporary register */ - if (!Parse_TempReg(s, &dstReg->Register)) - PARSE_ERROR; + if (!Parse_TempReg(parseState, &dstReg->Register)) + RETURN_ERROR; } - else if (!IsStateProgram && token[0] == 'o') { + else if (!parseState->isStateProgram && token[0] == 'o') { /* an output register */ - if (!Parse_OutputReg(s, &dstReg->Register)) - PARSE_ERROR; + if (!Parse_OutputReg(parseState, &dstReg->Register)) + RETURN_ERROR; } - else if (IsStateProgram && token[0] == 'c') { + else if (parseState->isStateProgram && token[0] == 'c') { /* absolute program parameter register */ - if (!Parse_AbsParamReg(s, &dstReg->Register)) - PARSE_ERROR; + if (!Parse_AbsParamReg(parseState, &dstReg->Register)) + RETURN_ERROR; } else { - PARSE_ERROR1("Bad destination register name"); + RETURN_ERROR1("Bad destination register name"); } /* Parse optional write mask */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (token[0] == '.') { /* got a mask */ GLint k = 0; - if (!Parse_String(s, ".")) - PARSE_ERROR; + if (!Parse_String(parseState, ".")) + RETURN_ERROR; - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; dstReg->WriteMask[0] = GL_FALSE; dstReg->WriteMask[1] = GL_FALSE; @@ -666,7 +600,7 @@ Parse_MaskedDstReg(const GLubyte **s, struct vp_dst_register *dstReg) k++; } if (k == 0) { - PARSE_ERROR1("Bad writemask character"); + RETURN_ERROR1("Bad writemask character"); } return GL_TRUE; } @@ -681,20 +615,20 @@ Parse_MaskedDstReg(const GLubyte **s, struct vp_dst_register *dstReg) static GLboolean -Parse_SwizzleSrcReg(const GLubyte **s, struct vp_src_register *srcReg) +Parse_SwizzleSrcReg(struct parse_state *parseState, struct vp_src_register *srcReg) { GLubyte token[100]; srcReg->RelAddr = GL_FALSE; /* check for '-' */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (token[0] == '-') { - (void) Parse_String(s, "-"); + (void) Parse_String(parseState, "-"); srcReg->Negate = GL_TRUE; - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; } else { srcReg->Negate = GL_FALSE; @@ -702,19 +636,19 @@ Parse_SwizzleSrcReg(const GLubyte **s, struct vp_src_register *srcReg) /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */ if (token[0] == 'R') { - if (!Parse_TempReg(s, &srcReg->Register)) - PARSE_ERROR; + if (!Parse_TempReg(parseState, &srcReg->Register)) + RETURN_ERROR; } else if (token[0] == 'c') { - if (!Parse_ParamReg(s, srcReg)) - PARSE_ERROR; + if (!Parse_ParamReg(parseState, srcReg)) + RETURN_ERROR; } else if (token[0] == 'v') { - if (!Parse_AttribReg(s, &srcReg->Register)) - PARSE_ERROR; + if (!Parse_AttribReg(parseState, &srcReg->Register)) + RETURN_ERROR; } else { - PARSE_ERROR2("Bad source register name", token); + RETURN_ERROR2("Bad source register name", token); } /* init swizzle fields */ @@ -724,13 +658,13 @@ Parse_SwizzleSrcReg(const GLubyte **s, struct vp_src_register *srcReg) srcReg->Swizzle[3] = 3; /* Look for optional swizzle suffix */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (token[0] == '.') { - (void) Parse_String(s, "."); /* consume . */ + (void) Parse_String(parseState, "."); /* consume . */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (token[1] == 0) { /* single letter swizzle */ @@ -743,7 +677,7 @@ Parse_SwizzleSrcReg(const GLubyte **s, struct vp_src_register *srcReg) else if (token[0] == 'w') ASSIGN_4V(srcReg->Swizzle, 3, 3, 3, 3); else - PARSE_ERROR1("Expected x, y, z, or w"); + RETURN_ERROR1("Expected x, y, z, or w"); } else { /* 2, 3 or 4-component swizzle */ @@ -758,10 +692,10 @@ Parse_SwizzleSrcReg(const GLubyte **s, struct vp_src_register *srcReg) else if (token[k] == 'w') srcReg->Swizzle[k] = 3; else - PARSE_ERROR; + RETURN_ERROR; } if (k >= 5) - PARSE_ERROR; + RETURN_ERROR; } } @@ -770,20 +704,20 @@ Parse_SwizzleSrcReg(const GLubyte **s, struct vp_src_register *srcReg) static GLboolean -Parse_ScalarSrcReg(const GLubyte **s, struct vp_src_register *srcReg) +Parse_ScalarSrcReg(struct parse_state *parseState, struct vp_src_register *srcReg) { GLubyte token[100]; srcReg->RelAddr = GL_FALSE; /* check for '-' */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (token[0] == '-') { srcReg->Negate = GL_TRUE; - (void) Parse_String(s, "-"); /* consume '-' */ - if (!Peek_Token(s, token)) - PARSE_ERROR; + (void) Parse_String(parseState, "-"); /* consume '-' */ + if (!Peek_Token(parseState, token)) + RETURN_ERROR; } else { srcReg->Negate = GL_FALSE; @@ -791,27 +725,27 @@ Parse_ScalarSrcReg(const GLubyte **s, struct vp_src_register *srcReg) /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */ if (token[0] == 'R') { - if (!Parse_TempReg(s, &srcReg->Register)) - PARSE_ERROR; + if (!Parse_TempReg(parseState, &srcReg->Register)) + RETURN_ERROR; } else if (token[0] == 'c') { - if (!Parse_ParamReg(s, srcReg)) - PARSE_ERROR; + if (!Parse_ParamReg(parseState, srcReg)) + RETURN_ERROR; } else if (token[0] == 'v') { - if (!Parse_AttribReg(s, &srcReg->Register)) - PARSE_ERROR; + if (!Parse_AttribReg(parseState, &srcReg->Register)) + RETURN_ERROR; } else { - PARSE_ERROR2("Bad source register name", token); + RETURN_ERROR2("Bad source register name", token); } /* Look for .[xyzw] suffix */ - if (!Parse_String(s, ".")) - PARSE_ERROR; + if (!Parse_String(parseState, ".")) + RETURN_ERROR; - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (token[0] == 'x' && token[1] == 0) { srcReg->Swizzle[0] = 0; @@ -826,7 +760,7 @@ Parse_ScalarSrcReg(const GLubyte **s, struct vp_src_register *srcReg) srcReg->Swizzle[0] = 3; } else { - PARSE_ERROR1("Bad scalar source suffix"); + RETURN_ERROR1("Bad scalar source suffix"); } srcReg->Swizzle[1] = srcReg->Swizzle[2] = srcReg->Swizzle[3] = 0; @@ -835,13 +769,13 @@ Parse_ScalarSrcReg(const GLubyte **s, struct vp_src_register *srcReg) static GLint -Parse_UnaryOpInstruction(const GLubyte **s, struct vp_instruction *inst) +Parse_UnaryOpInstruction(struct parse_state *parseState, struct vp_instruction *inst) { GLubyte token[100]; /* opcode */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (StrEq(token, (GLubyte *) "MOV")) { inst->Opcode = VP_OPCODE_MOV; @@ -849,41 +783,41 @@ Parse_UnaryOpInstruction(const GLubyte **s, struct vp_instruction *inst) else if (StrEq(token, (GLubyte *) "LIT")) { inst->Opcode = VP_OPCODE_LIT; } - else if (StrEq(token, (GLubyte *) "ABS") && IsVersion1_1) { + else if (StrEq(token, (GLubyte *) "ABS") && parseState->isVersion1_1) { inst->Opcode = VP_OPCODE_ABS; } else { - PARSE_ERROR; + RETURN_ERROR; } /* dest reg */ - if (!Parse_MaskedDstReg(s, &inst->DstReg)) - PARSE_ERROR; + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* src arg */ - if (!Parse_SwizzleSrcReg(s, &inst->SrcReg[0])) - PARSE_ERROR; + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; /* semicolon */ - if (!Parse_String(s, ";")) - PARSE_ERROR; + if (!Parse_String(parseState, ";")) + RETURN_ERROR; return GL_TRUE; } static GLboolean -Parse_BiOpInstruction(const GLubyte **s, struct vp_instruction *inst) +Parse_BiOpInstruction(struct parse_state *parseState, struct vp_instruction *inst) { GLubyte token[100]; /* opcode */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (StrEq(token, (GLubyte *) "MUL")) { inst->Opcode = VP_OPCODE_MUL; @@ -912,103 +846,103 @@ Parse_BiOpInstruction(const GLubyte **s, struct vp_instruction *inst) else if (StrEq(token, (GLubyte *) "SGE")) { inst->Opcode = VP_OPCODE_SGE; } - else if (StrEq(token, (GLubyte *) "DPH") && IsVersion1_1) { + else if (StrEq(token, (GLubyte *) "DPH") && parseState->isVersion1_1) { inst->Opcode = VP_OPCODE_DPH; } - else if (StrEq(token, (GLubyte *) "SUB") && IsVersion1_1) { + else if (StrEq(token, (GLubyte *) "SUB") && parseState->isVersion1_1) { inst->Opcode = VP_OPCODE_SUB; } else { - PARSE_ERROR; + RETURN_ERROR; } /* dest reg */ - if (!Parse_MaskedDstReg(s, &inst->DstReg)) - PARSE_ERROR; + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* first src arg */ - if (!Parse_SwizzleSrcReg(s, &inst->SrcReg[0])) - PARSE_ERROR; + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* second src arg */ - if (!Parse_SwizzleSrcReg(s, &inst->SrcReg[1])) - PARSE_ERROR; + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1])) + RETURN_ERROR; /* semicolon */ - if (!Parse_String(s, ";")) - PARSE_ERROR; + if (!Parse_String(parseState, ";")) + RETURN_ERROR; /* make sure we don't reference more than one program parameter register */ if (IsProgRegister(inst->SrcReg[0].Register) && IsProgRegister(inst->SrcReg[1].Register) && inst->SrcReg[0].Register != inst->SrcReg[1].Register) - PARSE_ERROR1("Can't reference two program parameter registers"); + RETURN_ERROR1("Can't reference two program parameter registers"); /* make sure we don't reference more than one vertex attribute register */ if (IsInputRegister(inst->SrcReg[0].Register) && IsInputRegister(inst->SrcReg[1].Register) && inst->SrcReg[0].Register != inst->SrcReg[1].Register) - PARSE_ERROR1("Can't reference two vertex attribute registers"); + RETURN_ERROR1("Can't reference two vertex attribute registers"); return GL_TRUE; } static GLboolean -Parse_TriOpInstruction(const GLubyte **s, struct vp_instruction *inst) +Parse_TriOpInstruction(struct parse_state *parseState, struct vp_instruction *inst) { GLubyte token[100]; /* opcode */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (StrEq(token, (GLubyte *) "MAD")) { inst->Opcode = VP_OPCODE_MAD; } else { - PARSE_ERROR; + RETURN_ERROR; } /* dest reg */ - if (!Parse_MaskedDstReg(s, &inst->DstReg)) - PARSE_ERROR; + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* first src arg */ - if (!Parse_SwizzleSrcReg(s, &inst->SrcReg[0])) - PARSE_ERROR; + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* second src arg */ - if (!Parse_SwizzleSrcReg(s, &inst->SrcReg[1])) - PARSE_ERROR; + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1])) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* third src arg */ - if (!Parse_SwizzleSrcReg(s, &inst->SrcReg[2])) - PARSE_ERROR; + if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[2])) + RETURN_ERROR; /* semicolon */ - if (!Parse_String(s, ";")) - PARSE_ERROR; + if (!Parse_String(parseState, ";")) + RETURN_ERROR; /* make sure we don't reference more than one program parameter register */ if ((IsProgRegister(inst->SrcReg[0].Register) && @@ -1020,7 +954,7 @@ Parse_TriOpInstruction(const GLubyte **s, struct vp_instruction *inst) (IsProgRegister(inst->SrcReg[1].Register) && IsProgRegister(inst->SrcReg[2].Register) && inst->SrcReg[1].Register != inst->SrcReg[2].Register)) - PARSE_ERROR1("Can only reference one program register"); + RETURN_ERROR1("Can only reference one program register"); /* make sure we don't reference more than one vertex attribute register */ if ((IsInputRegister(inst->SrcReg[0].Register) && @@ -1032,20 +966,20 @@ Parse_TriOpInstruction(const GLubyte **s, struct vp_instruction *inst) (IsInputRegister(inst->SrcReg[1].Register) && IsInputRegister(inst->SrcReg[2].Register) && inst->SrcReg[1].Register != inst->SrcReg[2].Register)) - PARSE_ERROR1("Can only reference one input register"); + RETURN_ERROR1("Can only reference one input register"); return GL_TRUE; } static GLboolean -Parse_ScalarInstruction(const GLubyte **s, struct vp_instruction *inst) +Parse_ScalarInstruction(struct parse_state *parseState, struct vp_instruction *inst) { GLubyte token[100]; /* opcode */ - if (!Parse_Token(s, token)) - PARSE_ERROR; + if (!Parse_Token(parseState, token)) + RETURN_ERROR; if (StrEq(token, (GLubyte *) "RCP")) { inst->Opcode = VP_OPCODE_RCP; @@ -1059,113 +993,114 @@ Parse_ScalarInstruction(const GLubyte **s, struct vp_instruction *inst) else if (StrEq(token, (GLubyte *) "LOG")) { inst->Opcode = VP_OPCODE_LOG; } - else if (StrEq(token, (GLubyte *) "RCC") && IsVersion1_1) { + else if (StrEq(token, (GLubyte *) "RCC") && parseState->isVersion1_1) { inst->Opcode = VP_OPCODE_RCC; } else { - PARSE_ERROR; + RETURN_ERROR; } /* dest reg */ - if (!Parse_MaskedDstReg(s, &inst->DstReg)) - PARSE_ERROR; + if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* first src arg */ - if (!Parse_ScalarSrcReg(s, &inst->SrcReg[0])) - PARSE_ERROR; + if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; /* semicolon */ - if (!Parse_String(s, ";")) - PARSE_ERROR; + if (!Parse_String(parseState, ";")) + RETURN_ERROR; return GL_TRUE; } static GLboolean -Parse_AddressInstruction(const GLubyte **s, struct vp_instruction *inst) +Parse_AddressInstruction(struct parse_state *parseState, struct vp_instruction *inst) { inst->Opcode = VP_OPCODE_ARL; /* opcode */ - if (!Parse_String(s, "ARL")) - PARSE_ERROR; + if (!Parse_String(parseState, "ARL")) + RETURN_ERROR; /* dest A0 reg */ - if (!Parse_AddrReg(s)) - PARSE_ERROR; + if (!Parse_AddrReg(parseState)) + RETURN_ERROR; /* comma */ - if (!Parse_String(s, ",")) - PARSE_ERROR; + if (!Parse_String(parseState, ",")) + RETURN_ERROR; /* parse src reg */ - if (!Parse_ScalarSrcReg(s, &inst->SrcReg[0])) - PARSE_ERROR; + if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) + RETURN_ERROR; /* semicolon */ - if (!Parse_String(s, ";")) - PARSE_ERROR; + if (!Parse_String(parseState, ";")) + RETURN_ERROR; return GL_TRUE; } static GLboolean -Parse_EndInstruction(const GLubyte **s, struct vp_instruction *inst) +Parse_EndInstruction(struct parse_state *parseState, struct vp_instruction *inst) { GLubyte token[100]; /* opcode */ - if (!Parse_String(s, "END")) - PARSE_ERROR; + if (!Parse_String(parseState, "END")) + RETURN_ERROR; inst->Opcode = VP_OPCODE_END; /* this should fail! */ - if (Parse_Token(s, token)) - PARSE_ERROR2("Unexpected token after END:", token); + if (Parse_Token(parseState, token)) + RETURN_ERROR2("Unexpected token after END:", token); else return GL_TRUE; } static GLboolean -Parse_OptionSequence(const GLubyte **s, struct vp_instruction program[]) +Parse_OptionSequence(struct parse_state *parseState, + struct vp_instruction program[]) { while (1) { GLubyte token[100]; - if (!Peek_Token(s, token)) { - PARSE_ERROR1("Unexpected end of input"); + if (!Peek_Token(parseState, token)) { + RETURN_ERROR1("Unexpected end of input"); return GL_FALSE; /* end of input */ } if (!StrEq(token, (GLubyte *) "OPTION")) return GL_TRUE; /* probably an instruction */ - Parse_Token(s, token); + Parse_Token(parseState, token); - if (!Parse_String(s, "NV_position_invariant")) + if (!Parse_String(parseState, "NV_position_invariant")) return GL_FALSE; - if (!Parse_String(s, ";")) + if (!Parse_String(parseState, ";")) return GL_FALSE; - IsPositionInvariant = GL_TRUE; + parseState->isPositionInvariant = GL_TRUE; } } static GLboolean -Parse_InstructionSequence(const GLubyte **s, struct vp_instruction program[]) +Parse_InstructionSequence(struct parse_state *parseState, + struct vp_instruction program[]) { GLubyte token[100]; - GLint count = 0; while (1) { - struct vp_instruction *inst = program + count; + struct vp_instruction *inst = program + parseState->numInst; /* Initialize the instruction */ inst->SrcReg[0].Register = -1; @@ -1173,14 +1108,14 @@ Parse_InstructionSequence(const GLubyte **s, struct vp_instruction program[]) inst->SrcReg[2].Register = -1; inst->DstReg.Register = -1; - if (!Peek_Token(s, token)) - PARSE_ERROR; + if (!Peek_Token(parseState, token)) + RETURN_ERROR; if (StrEq(token, (GLubyte *) "MOV") || StrEq(token, (GLubyte *) "LIT") || StrEq(token, (GLubyte *) "ABS")) { - if (!Parse_UnaryOpInstruction(s, inst)) - PARSE_ERROR; + if (!Parse_UnaryOpInstruction(parseState, inst)) + RETURN_ERROR; } else if (StrEq(token, (GLubyte *) "MUL") || StrEq(token, (GLubyte *) "ADD") || @@ -1193,54 +1128,80 @@ Parse_InstructionSequence(const GLubyte **s, struct vp_instruction program[]) StrEq(token, (GLubyte *) "SGE") || StrEq(token, (GLubyte *) "DPH") || StrEq(token, (GLubyte *) "SUB")) { - if (!Parse_BiOpInstruction(s, inst)) - PARSE_ERROR; + if (!Parse_BiOpInstruction(parseState, inst)) + RETURN_ERROR; } else if (StrEq(token, (GLubyte *) "MAD")) { - if (!Parse_TriOpInstruction(s, inst)) - PARSE_ERROR; + if (!Parse_TriOpInstruction(parseState, inst)) + RETURN_ERROR; } else if (StrEq(token, (GLubyte *) "RCP") || StrEq(token, (GLubyte *) "RSQ") || StrEq(token, (GLubyte *) "EXP") || StrEq(token, (GLubyte *) "LOG") || StrEq(token, (GLubyte *) "RCC")) { - if (!Parse_ScalarInstruction(s, inst)) - PARSE_ERROR; + if (!Parse_ScalarInstruction(parseState, inst)) + RETURN_ERROR; } else if (StrEq(token, (GLubyte *) "ARL")) { - if (!Parse_AddressInstruction(s, inst)) - PARSE_ERROR; + if (!Parse_AddressInstruction(parseState, inst)) + RETURN_ERROR; } else if (StrEq(token, (GLubyte *) "END")) { - if (!Parse_EndInstruction(s, inst)) - PARSE_ERROR; - else + if (!Parse_EndInstruction(parseState, inst)) + RETURN_ERROR; + else { + parseState->numInst++; return GL_TRUE; /* all done */ + } } else { /* bad instruction name */ - PARSE_ERROR2("Unexpected token: ", token); + RETURN_ERROR2("Unexpected token: ", token); } - count++; - if (count >= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS) - PARSE_ERROR1("Program too long"); + /* examine input/output registers */ + { + const GLint srcReg0 = inst->SrcReg[0].Register; + const GLint srcReg1 = inst->SrcReg[1].Register; + const GLint srcReg2 = inst->SrcReg[2].Register; + const GLint dstReg = inst->DstReg.Register; + + if (IsOutputRegister(dstReg)) + parseState->outputsWritten |= (1 << (dstReg - VP_OUTPUT_REG_START)); + else if (IsProgRegister(dstReg)) + parseState->progRegsWritten |= (1 << (dstReg - VP_PROG_REG_START)); + + if (IsInputRegister(srcReg0) && !inst->SrcReg[0].RelAddr) + parseState->inputsRead |= (1 << (srcReg0 - VP_INPUT_REG_START)); + + if (IsInputRegister(srcReg1) && !inst->SrcReg[1].RelAddr) + parseState->inputsRead |= (1 << (srcReg1 - VP_INPUT_REG_START)); + + if (IsInputRegister(srcReg2) && !inst->SrcReg[2].RelAddr) + parseState->inputsRead |= (1 << (srcReg2 - VP_INPUT_REG_START)); + } + + parseState->numInst++; + + if (parseState->numInst >= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS) + RETURN_ERROR1("Program too long"); } - PARSE_ERROR; + RETURN_ERROR; } static GLboolean -Parse_Program(const GLubyte **s, struct vp_instruction instBuffer[]) +Parse_Program(struct parse_state *parseState, + struct vp_instruction instBuffer[]) { - if (IsVersion1_1) { - if (!Parse_OptionSequence(s, instBuffer)) { + if (parseState->isVersion1_1) { + if (!Parse_OptionSequence(parseState, instBuffer)) { return GL_FALSE; } } - return Parse_InstructionSequence(s, instBuffer); + return Parse_InstructionSequence(parseState, instBuffer); } @@ -1254,7 +1215,7 @@ _mesa_parse_nv_vertex_program(GLcontext *ctx, GLenum dstTarget, const GLubyte *str, GLsizei len, struct vertex_program *program) { - const GLubyte *s; + struct parse_state parseState; struct vp_instruction instBuffer[MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS]; struct vp_instruction *newInst; GLenum target; @@ -1269,25 +1230,30 @@ _mesa_parse_nv_vertex_program(GLcontext *ctx, GLenum dstTarget, MEMCPY(programString, str, len); programString[len] = 0; - IsPositionInvariant = GL_FALSE; - IsVersion1_1 = GL_FALSE; + /* get ready to parse */ + parseState.isPositionInvariant = GL_FALSE; + parseState.isVersion1_1 = GL_FALSE; + parseState.numInst = 0; + parseState.inputsRead = 0; + parseState.outputsWritten = 0; + parseState.progRegsWritten = 0; /* check the program header */ if (_mesa_strncmp((const char *) programString, "!!VP1.0", 7) == 0) { target = GL_VERTEX_PROGRAM_NV; - s = programString + 7; - IsStateProgram = GL_FALSE; + parseState.pos = programString + 7; + parseState.isStateProgram = GL_FALSE; } else if (_mesa_strncmp((const char *) programString, "!!VP1.1", 7) == 0) { target = GL_VERTEX_PROGRAM_NV; - s = programString + 7; - IsStateProgram = GL_FALSE; - IsVersion1_1 = GL_TRUE; + parseState.pos = programString + 7; + parseState.isStateProgram = GL_FALSE; + parseState.isVersion1_1 = GL_TRUE; } else if (_mesa_strncmp((const char *) programString, "!!VSP1.0", 8) == 0) { target = GL_VERTEX_STATE_PROGRAM_NV; - s = programString + 8; - IsStateProgram = GL_TRUE; + parseState.pos = programString + 8; + parseState.isStateProgram = GL_TRUE; } else { /* invalid header */ @@ -1303,48 +1269,20 @@ _mesa_parse_nv_vertex_program(GLcontext *ctx, GLenum dstTarget, return; } - if (Parse_Program(&s, instBuffer)) { - GLuint numInst; - GLuint inputsRead = 0; - GLuint outputsWritten = 0; - GLuint progRegsWritten = 0; - /* Find length of the program and compute bitmasks to indicate which - * vertex input registers are read, which vertex result registers are - * written to, and which program registers are written to. - * We could actually do this while we parse the program. - */ - for (numInst = 0; instBuffer[numInst].Opcode != VP_OPCODE_END; numInst++) { - const GLint srcReg0 = instBuffer[numInst].SrcReg[0].Register; - const GLint srcReg1 = instBuffer[numInst].SrcReg[1].Register; - const GLint srcReg2 = instBuffer[numInst].SrcReg[2].Register; - const GLint dstReg = instBuffer[numInst].DstReg.Register; + if (Parse_Program(&parseState, instBuffer)) { + /* successful parse! */ - if (IsOutputRegister(dstReg)) - outputsWritten |= (1 << (dstReg - VP_OUTPUT_REG_START)); - else if (IsProgRegister(dstReg)) - progRegsWritten |= (1 << (dstReg - VP_PROG_REG_START)); - if (IsInputRegister(srcReg0) - && !instBuffer[numInst].SrcReg[0].RelAddr) - inputsRead |= (1 << (srcReg0 - VP_INPUT_REG_START)); - if (IsInputRegister(srcReg1) - && !instBuffer[numInst].SrcReg[1].RelAddr) - inputsRead |= (1 << (srcReg1 - VP_INPUT_REG_START)); - if (IsInputRegister(srcReg2) - && !instBuffer[numInst].SrcReg[2].RelAddr) - inputsRead |= (1 << (srcReg2 - VP_INPUT_REG_START)); - } - numInst++; - - if (IsStateProgram) { - if (progRegsWritten == 0) { + if (parseState.isStateProgram) { + if (parseState.progRegsWritten == 0) { _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(c[#] not written)"); return; } } else { - if (!IsPositionInvariant && !(outputsWritten & 1)) { + if (!parseState.isPositionInvariant && + !(parseState.outputsWritten & 1)) { /* bit 1 = HPOS register */ _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(HPOS not written)"); @@ -1352,19 +1290,22 @@ _mesa_parse_nv_vertex_program(GLcontext *ctx, GLenum dstTarget, } } - program->InputsRead = inputsRead; - program->OutputsWritten = outputsWritten; - program->IsPositionInvariant = IsPositionInvariant; + /* save bitmasks of registers read/written */ + program->InputsRead = parseState.inputsRead; + program->OutputsWritten = parseState.outputsWritten; + program->IsPositionInvariant = parseState.isPositionInvariant; /* copy the compiled instructions */ - assert(numInst <= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS); - newInst = (struct vp_instruction *) MALLOC(numInst * sizeof(struct vp_instruction)); + assert(parseState.numInst <= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS); + newInst = (struct vp_instruction *) + MALLOC(parseState.numInst * sizeof(struct vp_instruction)); if (!newInst) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); FREE(programString); return; /* out of memory */ } - MEMCPY(newInst, instBuffer, numInst * sizeof(struct vp_instruction)); + MEMCPY(newInst, instBuffer, + parseState.numInst * sizeof(struct vp_instruction)); /* install the program */ program->Base.Target = target; @@ -1385,47 +1326,19 @@ _mesa_parse_nv_vertex_program(GLcontext *ctx, GLenum dstTarget, } else { /* Error! */ + ctx->Program.ErrorPos = parseState.pos - str; + _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV"); #ifdef DEBUG - /* print a message showing the program line containing the error */ - ctx->Program.ErrorPos = s - str; { - const GLubyte *p = str, *line = str; - int lineNum = 1, statementNum = 1, column = 0; - char errorLine[1000]; - int i; - while (*p && p < s) { /* s is the error position */ - if (*p == '\n') { - line = p + 1; - lineNum++; - column = 0; - } - else if (*p == ';') { - statementNum++; - } - else - column++; - p++; - } - if (p) { - /* Copy the line with the error into errorLine so we can null- - * terminate it. - */ - for (i = 0; line[i] != '\n' && line[i]; i++) - errorLine[i] = (char) line[i]; - errorLine[i] = 0; - } - /* - _mesa_debug("Error pos = %d (%c) col %d\n", - ctx->Program.ErrorPos, *s, column); - */ - _mesa_debug(ctx, "Vertex program error on line %2d: %s\n", lineNum, errorLine); - _mesa_debug(ctx, " (statement %2d) near column %2d: ", statementNum, column+1); - for (i = 0; i < column; i++) - _mesa_debug(ctx, " "); - _mesa_debug(ctx, "^\n"); + GLint line, column; + const char *lineStr; + lineStr = _mesa_find_line_column((const char *) programString, + (const char *) parseState.pos, &line, &column); + _mesa_debug(ctx, "Parse error on line %d, column %d:%s\n", + line, column, lineStr); + _mesa_free((void *) lineStr); } #endif - _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV"); } } |