diff options
Diffstat (limited to 'mesalib/src/mesa/program/nvfragparse.c')
| -rw-r--r-- | mesalib/src/mesa/program/nvfragparse.c | 3176 |
1 files changed, 1588 insertions, 1588 deletions
diff --git a/mesalib/src/mesa/program/nvfragparse.c b/mesalib/src/mesa/program/nvfragparse.c index 0de3c5804..04538e071 100644 --- a/mesalib/src/mesa/program/nvfragparse.c +++ b/mesalib/src/mesa/program/nvfragparse.c @@ -1,1588 +1,1588 @@ -/* - * Mesa 3-D graphics library - * Version: 6.5 - * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/** - * \file nvfragparse.c - * NVIDIA fragment program parser. - * \author Brian Paul - */ - -/* - * Regarding GL_NV_fragment_program: - * - * Portions of this software may use or implement intellectual - * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims - * any and all warranties with respect to such intellectual property, - * including any use thereof or modifications thereto. - */ - -#include "main/glheader.h" -#include "main/context.h" -#include "main/imports.h" -#include "main/macros.h" -#include "program.h" -#include "prog_parameter.h" -#include "prog_print.h" -#include "prog_instruction.h" -#include "nvfragparse.h" - - -#define INPUT_1V 1 -#define INPUT_2V 2 -#define INPUT_3V 3 -#define INPUT_1S 4 -#define INPUT_2S 5 -#define INPUT_CC 6 -#define INPUT_1V_T 7 /* one source vector, plus textureId */ -#define INPUT_3V_T 8 /* one source vector, plus textureId */ -#define INPUT_NONE 9 -#define INPUT_1V_S 10 /* a string and a vector register */ -#define OUTPUT_V 20 -#define OUTPUT_S 21 -#define OUTPUT_NONE 22 - -/* IRIX defines some of these */ -#undef _R -#undef _H -#undef _X -#undef _C -#undef _S - -/* Optional suffixes */ -#define _R FLOAT32 /* float */ -#define _H FLOAT16 /* half-float */ -#define _X FIXED12 /* fixed */ -#define _C 0x08 /* set cond codes */ -#define _S 0x10 /* saturate, clamp result to [0,1] */ - -struct instruction_pattern { - const char *name; - enum prog_opcode opcode; - GLuint inputs; - GLuint outputs; - GLuint suffixes; -}; - -static const struct instruction_pattern Instructions[] = { - { "ADD", OPCODE_ADD, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "COS", OPCODE_COS, INPUT_1S, OUTPUT_S, _R | _H | _C | _S }, - { "DDX", OPCODE_DDX, INPUT_1V, OUTPUT_V, _R | _H | _C | _S }, - { "DDY", OPCODE_DDY, INPUT_1V, OUTPUT_V, _R | _H | _C | _S }, - { "DP3", OPCODE_DP3, INPUT_2V, OUTPUT_S, _R | _H | _X | _C | _S }, - { "DP4", OPCODE_DP4, INPUT_2V, OUTPUT_S, _R | _H | _X | _C | _S }, - { "DST", OPCODE_DP4, INPUT_2V, OUTPUT_V, _R | _H | _C | _S }, - { "EX2", OPCODE_DP4, INPUT_1S, OUTPUT_S, _R | _H | _C | _S }, - { "FLR", OPCODE_FLR, INPUT_1V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "FRC", OPCODE_FRC, INPUT_1V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "KIL", OPCODE_KIL_NV, INPUT_CC, OUTPUT_NONE, 0 }, - { "LG2", OPCODE_LG2, INPUT_1S, OUTPUT_S, _R | _H | _C | _S }, - { "LIT", OPCODE_LIT, INPUT_1V, OUTPUT_V, _R | _H | _C | _S }, - { "LRP", OPCODE_LRP, INPUT_3V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "MAD", OPCODE_MAD, INPUT_3V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "MAX", OPCODE_MAX, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "MIN", OPCODE_MIN, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "MOV", OPCODE_MOV, INPUT_1V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "MUL", OPCODE_MUL, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "PK2H", OPCODE_PK2H, INPUT_1V, OUTPUT_S, 0 }, - { "PK2US", OPCODE_PK2US, INPUT_1V, OUTPUT_S, 0 }, - { "PK4B", OPCODE_PK4B, INPUT_1V, OUTPUT_S, 0 }, - { "PK4UB", OPCODE_PK4UB, INPUT_1V, OUTPUT_S, 0 }, - { "POW", OPCODE_POW, INPUT_2S, OUTPUT_S, _R | _H | _C | _S }, - { "RCP", OPCODE_RCP, INPUT_1S, OUTPUT_S, _R | _H | _C | _S }, - { "RFL", OPCODE_RFL, INPUT_2V, OUTPUT_V, _R | _H | _C | _S }, - { "RSQ", OPCODE_RSQ, INPUT_1S, OUTPUT_S, _R | _H | _C | _S }, - { "SEQ", OPCODE_SEQ, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SFL", OPCODE_SFL, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SGE", OPCODE_SGE, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SGT", OPCODE_SGT, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SIN", OPCODE_SIN, INPUT_1S, OUTPUT_S, _R | _H | _C | _S }, - { "SLE", OPCODE_SLE, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SLT", OPCODE_SLT, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SNE", OPCODE_SNE, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "STR", OPCODE_STR, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "SUB", OPCODE_SUB, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S }, - { "TEX", OPCODE_TEX, INPUT_1V_T, OUTPUT_V, _C | _S }, - { "TXD", OPCODE_TXD, INPUT_3V_T, OUTPUT_V, _C | _S }, - { "TXP", OPCODE_TXP_NV, INPUT_1V_T, OUTPUT_V, _C | _S }, - { "UP2H", OPCODE_UP2H, INPUT_1S, OUTPUT_V, _C | _S }, - { "UP2US", OPCODE_UP2US, INPUT_1S, OUTPUT_V, _C | _S }, - { "UP4B", OPCODE_UP4B, INPUT_1S, OUTPUT_V, _C | _S }, - { "UP4UB", OPCODE_UP4UB, INPUT_1S, OUTPUT_V, _C | _S }, - { "X2D", OPCODE_X2D, INPUT_3V, OUTPUT_V, _R | _H | _C | _S }, - { "PRINT", OPCODE_PRINT, INPUT_1V_S, OUTPUT_NONE, 0 }, - { NULL, (enum prog_opcode) -1, 0, 0, 0 } -}; - - -/* - * Information needed or computed during parsing. - * Remember, we can't modify the target program object until we've - * _successfully_ parsed the program text. - */ -struct parse_state { - GLcontext *ctx; - const GLubyte *start; /* start of program string */ - const GLubyte *pos; /* current position */ - const GLubyte *curLine; - struct gl_fragment_program *program; /* current program */ - - struct gl_program_parameter_list *parameters; - - GLuint numInst; /* number of instructions parsed */ - GLuint inputsRead; /* bitmask of input registers used */ - GLuint outputsWritten; /* bitmask of 1 << FRAG_OUTPUT_* bits */ - GLuint texturesUsed[MAX_TEXTURE_IMAGE_UNITS]; -}; - - - -/* - * Called whenever we find an error during parsing. - */ -static void -record_error(struct parse_state *parseState, const char *msg, int lineNo) -{ -#ifdef DEBUG - GLint line, column; - const GLubyte *lineStr; - lineStr = _mesa_find_line_column(parseState->start, - parseState->pos, &line, &column); - _mesa_debug(parseState->ctx, - "nvfragparse.c(%d): line %d, column %d:%s (%s)\n", - lineNo, line, column, (char *) lineStr, msg); - free((void *) lineStr); -#else - (void) lineNo; -#endif - - /* Check that no error was already recorded. Only record the first one. */ - if (parseState->ctx->Program.ErrorString[0] == 0) { - _mesa_set_program_error(parseState->ctx, - parseState->pos - parseState->start, - msg); - } -} - - -#define RETURN_ERROR \ -do { \ - record_error(parseState, "Unexpected end of input.", __LINE__); \ - return GL_FALSE; \ -} while(0) - -#define RETURN_ERROR1(msg) \ -do { \ - record_error(parseState, msg, __LINE__); \ - return GL_FALSE; \ -} while(0) - -#define RETURN_ERROR2(msg1, msg2) \ -do { \ - char err[1000]; \ - sprintf(err, "%s %s", msg1, msg2); \ - record_error(parseState, err, __LINE__); \ - return GL_FALSE; \ -} while(0) - - - - -/* - * Search a list of instruction structures for a match. - */ -static struct instruction_pattern -MatchInstruction(const GLubyte *token) -{ - const struct instruction_pattern *inst; - struct instruction_pattern result; - - result.name = NULL; - result.opcode = MAX_OPCODE; /* i.e. invalid instruction */ - result.inputs = 0; - result.outputs = 0; - result.suffixes = 0; - - for (inst = Instructions; inst->name; inst++) { - if (strncmp((const char *) token, inst->name, 3) == 0) { - /* matched! */ - int i = 3; - result = *inst; - result.suffixes = 0; - /* look at suffix */ - if (token[i] == 'R') { - result.suffixes |= _R; - i++; - } - else if (token[i] == 'H') { - result.suffixes |= _H; - i++; - } - else if (token[i] == 'X') { - result.suffixes |= _X; - i++; - } - if (token[i] == 'C') { - result.suffixes |= _C; - i++; - } - if (token[i] == '_' && token[i+1] == 'S' && - token[i+2] == 'A' && token[i+3] == 'T') { - result.suffixes |= _S; - } - return result; - } - } - - return result; -} - - - - -/**********************************************************************/ - - -static GLboolean IsLetter(GLubyte b) -{ - return (b >= 'a' && b <= 'z') || - (b >= 'A' && b <= 'Z') || - (b == '_') || - (b == '$'); -} - - -static GLboolean IsDigit(GLubyte b) -{ - return b >= '0' && b <= '9'; -} - - -static GLboolean IsWhitespace(GLubyte b) -{ - return b == ' ' || b == '\t' || b == '\n' || b == '\r'; -} - - -/** - * Starting at 'str' find the next token. A token can be an integer, - * an identifier or punctuation symbol. - * \return <= 0 we found an error, else, return number of characters parsed. - */ -static GLint -GetToken(struct parse_state *parseState, GLubyte *token) -{ - const GLubyte *str = parseState->pos; - GLint i = 0, j = 0; - - token[0] = 0; - - /* skip whitespace and comments */ - while (str[i] && (IsWhitespace(str[i]) || str[i] == '#')) { - if (str[i] == '#') { - /* skip comment */ - while (str[i] && (str[i] != '\n' && str[i] != '\r')) { - i++; - } - if (str[i] == '\n' || str[i] == '\r') - parseState->curLine = str + i + 1; - } - else { - /* skip whitespace */ - if (str[i] == '\n' || str[i] == '\r') - parseState->curLine = str + i + 1; - i++; - } - } - - if (str[i] == 0) - return -i; - - /* try matching an integer */ - while (str[i] && IsDigit(str[i])) { - token[j++] = str[i++]; - } - if (j > 0 || !str[i]) { - token[j] = 0; - return i; - } - - /* try matching an identifier */ - if (IsLetter(str[i])) { - while (str[i] && (IsLetter(str[i]) || IsDigit(str[i]))) { - token[j++] = str[i++]; - } - token[j] = 0; - return i; - } - - /* punctuation character */ - if (str[i]) { - token[0] = str[i++]; - token[1] = 0; - return i; - } - - /* end of input */ - token[0] = 0; - return i; -} - - -/** - * Get next token from input stream and increment stream pointer past token. - */ -static GLboolean -Parse_Token(struct parse_state *parseState, GLubyte *token) -{ - GLint i; - i = GetToken(parseState, token); - if (i <= 0) { - parseState->pos += (-i); - return GL_FALSE; - } - parseState->pos += i; - return GL_TRUE; -} - - -/** - * Get next token from input stream but don't increment stream pointer. - */ -static GLboolean -Peek_Token(struct parse_state *parseState, GLubyte *token) -{ - GLint i, len; - i = GetToken(parseState, token); - if (i <= 0) { - parseState->pos += (-i); - return GL_FALSE; - } - len = (GLint) strlen((const char *) token); - parseState->pos += (i - len); - return GL_TRUE; -} - - -/**********************************************************************/ - -static const char *InputRegisters[MAX_NV_FRAGMENT_PROGRAM_INPUTS + 1] = { - "WPOS", "COL0", "COL1", "FOGC", - "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL -}; - - - -/**********************************************************************/ - -/** - * Try to match 'pattern' as the next token after any whitespace/comments. - */ -static GLboolean -Parse_String(struct parse_state *parseState, const char *pattern) -{ - const GLubyte *m; - GLint i; - - /* skip whitespace and comments */ - while (IsWhitespace(*parseState->pos) || *parseState->pos == '#') { - if (*parseState->pos == '#') { - while (*parseState->pos && (*parseState->pos != '\n' && *parseState->pos != '\r')) { - parseState->pos += 1; - } - if (*parseState->pos == '\n' || *parseState->pos == '\r') - parseState->curLine = parseState->pos + 1; - } - else { - /* skip whitespace */ - if (*parseState->pos == '\n' || *parseState->pos == '\r') - parseState->curLine = parseState->pos + 1; - parseState->pos += 1; - } - } - - /* Try to match the pattern */ - m = parseState->pos; - for (i = 0; pattern[i]; i++) { - if (*m != (GLubyte) pattern[i]) - return GL_FALSE; - m += 1; - } - parseState->pos = m; - - return GL_TRUE; /* success */ -} - - -static GLboolean -Parse_Identifier(struct parse_state *parseState, GLubyte *ident) -{ - if (!Parse_Token(parseState, ident)) - RETURN_ERROR; - if (IsLetter(ident[0])) - return GL_TRUE; - else - RETURN_ERROR1("Expected an identfier"); -} - - -/** - * Parse a floating point constant, or a defined symbol name. - * [+/-]N[.N[eN]] - * Output: number[0 .. 3] will get the value. - */ -static GLboolean -Parse_ScalarConstant(struct parse_state *parseState, GLfloat *number) -{ - char *end = NULL; - - *number = (GLfloat) _mesa_strtof((const char *) parseState->pos, &end); - - if (end && end > (char *) parseState->pos) { - /* got a number */ - parseState->pos = (GLubyte *) end; - number[1] = *number; - number[2] = *number; - number[3] = *number; - return GL_TRUE; - } - else { - /* should be an identifier */ - GLubyte ident[100]; - const GLfloat *constant; - if (!Parse_Identifier(parseState, ident)) - RETURN_ERROR1("Expected an identifier"); - constant = _mesa_lookup_parameter_value(parseState->parameters, - -1, (const char *) ident); - /* XXX Check that it's a constant and not a parameter */ - if (!constant) { - RETURN_ERROR1("Undefined symbol"); - } - else { - COPY_4V(number, constant); - return GL_TRUE; - } - } -} - - - -/** - * Parse a vector constant, one of: - * { float } - * { float, float } - * { float, float, float } - * { float, float, float, float } - */ -static GLboolean -Parse_VectorConstant(struct parse_state *parseState, GLfloat *vec) -{ - /* "{" was already consumed */ - - ASSIGN_4V(vec, 0.0, 0.0, 0.0, 1.0); - - if (!Parse_ScalarConstant(parseState, vec+0)) /* X */ - return GL_FALSE; - - if (Parse_String(parseState, "}")) { - return GL_TRUE; - } - - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected comma in vector constant"); - - if (!Parse_ScalarConstant(parseState, vec+1)) /* Y */ - return GL_FALSE; - - if (Parse_String(parseState, "}")) { - return GL_TRUE; - } - - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected comma in vector constant"); - - if (!Parse_ScalarConstant(parseState, vec+2)) /* Z */ - return GL_FALSE; - - if (Parse_String(parseState, "}")) { - return GL_TRUE; - } - - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected comma in vector constant"); - - if (!Parse_ScalarConstant(parseState, vec+3)) /* W */ - return GL_FALSE; - - if (!Parse_String(parseState, "}")) - RETURN_ERROR1("Expected closing brace in vector constant"); - - return GL_TRUE; -} - - -/** - * Parse <number>, <varname> or {a, b, c, d}. - * Return number of values in the vector or scalar, or zero if parse error. - */ -static GLuint -Parse_VectorOrScalarConstant(struct parse_state *parseState, GLfloat *vec) -{ - if (Parse_String(parseState, "{")) { - return Parse_VectorConstant(parseState, vec); - } - else { - GLboolean b = Parse_ScalarConstant(parseState, vec); - if (b) { - vec[1] = vec[2] = vec[3] = vec[0]; - } - return b; - } -} - - -/** - * Parse a texture image source: - * [TEX0 | TEX1 | .. | TEX15] , [1D | 2D | 3D | CUBE | RECT] - */ -static GLboolean -Parse_TextureImageId(struct parse_state *parseState, - GLubyte *texUnit, GLubyte *texTargetBit) -{ - GLubyte imageSrc[100]; - GLint unit; - - if (!Parse_Token(parseState, imageSrc)) - RETURN_ERROR; - - if (imageSrc[0] != 'T' || - imageSrc[1] != 'E' || - imageSrc[2] != 'X') { - RETURN_ERROR1("Expected TEX# source"); - } - unit = atoi((const char *) imageSrc + 3); - if ((unit < 0 || unit > MAX_TEXTURE_IMAGE_UNITS) || - (unit == 0 && (imageSrc[3] != '0' || imageSrc[4] != 0))) { - RETURN_ERROR1("Invalied TEX# source index"); - } - *texUnit = unit; - - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - - if (Parse_String(parseState, "1D")) { - *texTargetBit = TEXTURE_1D_BIT; - } - else if (Parse_String(parseState, "2D")) { - *texTargetBit = TEXTURE_2D_BIT; - } - else if (Parse_String(parseState, "3D")) { - *texTargetBit = TEXTURE_3D_BIT; - } - else if (Parse_String(parseState, "CUBE")) { - *texTargetBit = TEXTURE_CUBE_BIT; - } - else if (Parse_String(parseState, "RECT")) { - *texTargetBit = TEXTURE_RECT_BIT; - } - else { - RETURN_ERROR1("Invalid texture target token"); - } - - /* update record of referenced texture units */ - parseState->texturesUsed[*texUnit] |= *texTargetBit; - if (_mesa_bitcount(parseState->texturesUsed[*texUnit]) > 1) { - RETURN_ERROR1("Only one texture target can be used per texture unit."); - } - - return GL_TRUE; -} - - -/** - * Parse a scalar suffix like .x, .y, .z or .w or parse a swizzle suffix - * like .wxyz, .xxyy, etc and return the swizzle indexes. - */ -static GLboolean -Parse_SwizzleSuffix(const GLubyte *token, GLuint swizzle[4]) -{ - if (token[1] == 0) { - /* single letter swizzle (scalar) */ - if (token[0] == 'x') - ASSIGN_4V(swizzle, 0, 0, 0, 0); - else if (token[0] == 'y') - ASSIGN_4V(swizzle, 1, 1, 1, 1); - else if (token[0] == 'z') - ASSIGN_4V(swizzle, 2, 2, 2, 2); - else if (token[0] == 'w') - ASSIGN_4V(swizzle, 3, 3, 3, 3); - else - return GL_FALSE; - } - else { - /* 4-component swizzle (vector) */ - GLint k; - for (k = 0; k < 4 && token[k]; k++) { - if (token[k] == 'x') - swizzle[k] = 0; - else if (token[k] == 'y') - swizzle[k] = 1; - else if (token[k] == 'z') - swizzle[k] = 2; - else if (token[k] == 'w') - swizzle[k] = 3; - else - return GL_FALSE; - } - if (k != 4) - return GL_FALSE; - } - return GL_TRUE; -} - - -static GLboolean -Parse_CondCodeMask(struct parse_state *parseState, - struct prog_dst_register *dstReg) -{ - if (Parse_String(parseState, "EQ")) - dstReg->CondMask = COND_EQ; - else if (Parse_String(parseState, "GE")) - dstReg->CondMask = COND_GE; - else if (Parse_String(parseState, "GT")) - dstReg->CondMask = COND_GT; - else if (Parse_String(parseState, "LE")) - dstReg->CondMask = COND_LE; - else if (Parse_String(parseState, "LT")) - dstReg->CondMask = COND_LT; - else if (Parse_String(parseState, "NE")) - dstReg->CondMask = COND_NE; - else if (Parse_String(parseState, "TR")) - dstReg->CondMask = COND_TR; - else if (Parse_String(parseState, "FL")) - dstReg->CondMask = COND_FL; - else - RETURN_ERROR1("Invalid condition code mask"); - - /* look for optional .xyzw swizzle */ - if (Parse_String(parseState, ".")) { - GLubyte token[100]; - GLuint swz[4]; - - if (!Parse_Token(parseState, token)) /* get xyzw suffix */ - RETURN_ERROR; - - if (!Parse_SwizzleSuffix(token, swz)) - RETURN_ERROR1("Invalid swizzle suffix"); - - dstReg->CondSwizzle = MAKE_SWIZZLE4(swz[0], swz[1], swz[2], swz[3]); - } - - return GL_TRUE; -} - - -/** - * Parse a temporary register: Rnn or Hnn - */ -static GLboolean -Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum) -{ - GLubyte token[100]; - - /* Should be 'R##' or 'H##' */ - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - if (token[0] != 'R' && token[0] != 'H') - RETURN_ERROR1("Expected R## or H##"); - - if (IsDigit(token[1])) { - GLint reg = atoi((const char *) (token + 1)); - if (token[0] == 'H') - reg += 32; - if (reg >= MAX_NV_FRAGMENT_PROGRAM_TEMPS) - RETURN_ERROR1("Invalid temporary register name"); - *tempRegNum = reg; - } - else { - RETURN_ERROR1("Invalid temporary register name"); - } - - return GL_TRUE; -} - - -/** - * Parse a write-only dummy register: RC or HC. - */ -static GLboolean -Parse_DummyReg(struct parse_state *parseState, GLint *regNum) -{ - if (Parse_String(parseState, "RC")) { - *regNum = 0; - } - else if (Parse_String(parseState, "HC")) { - *regNum = 1; - } - else { - RETURN_ERROR1("Invalid write-only register name"); - } - - return GL_TRUE; -} - - -/** - * Parse a program local parameter register "p[##]" - */ -static GLboolean -Parse_ProgramParamReg(struct parse_state *parseState, GLint *regNum) -{ - GLubyte token[100]; - - if (!Parse_String(parseState, "p[")) - RETURN_ERROR1("Expected p["); - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (IsDigit(token[0])) { - /* a numbered program parameter register */ - GLint reg = atoi((const char *) token); - if (reg >= MAX_NV_FRAGMENT_PROGRAM_PARAMS) - RETURN_ERROR1("Invalid constant program number"); - *regNum = reg; - } - else { - RETURN_ERROR; - } - - if (!Parse_String(parseState, "]")) - RETURN_ERROR1("Expected ]"); - - return GL_TRUE; -} - - -/** - * Parse f[name] - fragment input register - */ -static GLboolean -Parse_FragReg(struct parse_state *parseState, GLint *tempRegNum) -{ - GLubyte token[100]; - GLint j; - - /* Match 'f[' */ - if (!Parse_String(parseState, "f[")) - RETURN_ERROR1("Expected f["); - - /* get <name> and look for match */ - if (!Parse_Token(parseState, token)) { - RETURN_ERROR; - } - for (j = 0; InputRegisters[j]; j++) { - if (strcmp((const char *) token, InputRegisters[j]) == 0) { - *tempRegNum = j; - parseState->inputsRead |= (1 << j); - break; - } - } - if (!InputRegisters[j]) { - /* unknown input register label */ - RETURN_ERROR2("Invalid register name", token); - } - - /* Match '[' */ - if (!Parse_String(parseState, "]")) - RETURN_ERROR1("Expected ]"); - - return GL_TRUE; -} - - -static GLboolean -Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum) -{ - GLubyte token[100]; - - /* Match "o[" */ - if (!Parse_String(parseState, "o[")) - RETURN_ERROR1("Expected o["); - - /* Get output reg name */ - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - /* try to match an output register name */ - if (strcmp((char *) token, "COLR") == 0 || - strcmp((char *) token, "COLH") == 0) { - /* note that we don't distinguish between COLR and COLH */ - *outputRegNum = FRAG_RESULT_COLOR; - parseState->outputsWritten |= (1 << FRAG_RESULT_COLOR); - } - else if (strcmp((char *) token, "DEPR") == 0) { - *outputRegNum = FRAG_RESULT_DEPTH; - parseState->outputsWritten |= (1 << FRAG_RESULT_DEPTH); - } - else { - RETURN_ERROR1("Invalid output register name"); - } - - /* Match ']' */ - if (!Parse_String(parseState, "]")) - RETURN_ERROR1("Expected ]"); - - return GL_TRUE; -} - - -static GLboolean -Parse_MaskedDstReg(struct parse_state *parseState, - struct prog_dst_register *dstReg) -{ - GLubyte token[100]; - GLint idx; - - /* Dst reg can be R<n>, H<n>, o[n], RC or HC */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - if (strcmp((const char *) token, "RC") == 0 || - strcmp((const char *) token, "HC") == 0) { - /* a write-only register */ - dstReg->File = PROGRAM_WRITE_ONLY; - if (!Parse_DummyReg(parseState, &idx)) - RETURN_ERROR; - dstReg->Index = idx; - } - else if (token[0] == 'R' || token[0] == 'H') { - /* a temporary register */ - dstReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - dstReg->Index = idx; - } - else if (token[0] == 'o') { - /* an output register */ - dstReg->File = PROGRAM_OUTPUT; - if (!Parse_OutputReg(parseState, &idx)) - RETURN_ERROR; - dstReg->Index = idx; - } - else { - RETURN_ERROR1("Invalid destination register name"); - } - - /* Parse optional write mask */ - if (Parse_String(parseState, ".")) { - /* got a mask */ - GLint k = 0; - - if (!Parse_Token(parseState, token)) /* get xyzw writemask */ - RETURN_ERROR; - - dstReg->WriteMask = 0; - - if (token[k] == 'x') { - dstReg->WriteMask |= WRITEMASK_X; - k++; - } - if (token[k] == 'y') { - dstReg->WriteMask |= WRITEMASK_Y; - k++; - } - if (token[k] == 'z') { - dstReg->WriteMask |= WRITEMASK_Z; - k++; - } - if (token[k] == 'w') { - dstReg->WriteMask |= WRITEMASK_W; - k++; - } - if (k == 0) { - RETURN_ERROR1("Invalid writemask character"); - } - - } - else { - dstReg->WriteMask = WRITEMASK_XYZW; - } - - /* optional condition code mask */ - if (Parse_String(parseState, "(")) { - /* ("EQ" | "GE" | "GT" | "LE" | "LT" | "NE" | "TR" | "FL".x|y|z|w) */ - /* ("EQ" | "GE" | "GT" | "LE" | "LT" | "NE" | "TR" | "FL".[xyzw]) */ - if (!Parse_CondCodeMask(parseState, dstReg)) - RETURN_ERROR; - - if (!Parse_String(parseState, ")")) /* consume ")" */ - RETURN_ERROR1("Expected )"); - - return GL_TRUE; - } - else { - /* no cond code mask */ - dstReg->CondMask = COND_TR; - dstReg->CondSwizzle = SWIZZLE_NOOP; - return GL_TRUE; - } -} - - -/** - * Parse a vector source (register, constant, etc): - * <vectorSrc> ::= <absVectorSrc> - * | <baseVectorSrc> - * <absVectorSrc> ::= <negate> "|" <baseVectorSrc> "|" - */ -static GLboolean -Parse_VectorSrc(struct parse_state *parseState, - struct prog_src_register *srcReg) -{ - GLfloat sign = 1.0F; - GLubyte token[100]; - GLint idx; - GLuint negateBase, negateAbs; - - /* - * First, take care of +/- and absolute value stuff. - */ - if (Parse_String(parseState, "-")) - sign = -1.0F; - else if (Parse_String(parseState, "+")) - sign = +1.0F; - - if (Parse_String(parseState, "|")) { - srcReg->Abs = GL_TRUE; - negateAbs = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE; - - if (Parse_String(parseState, "-")) - negateBase = NEGATE_XYZW; - else if (Parse_String(parseState, "+")) - negateBase = NEGATE_NONE; - else - negateBase = NEGATE_NONE; - } - else { - srcReg->Abs = GL_FALSE; - negateAbs = NEGATE_NONE; - negateBase = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE; - } - - srcReg->Negate = srcReg->Abs ? negateAbs : negateBase; - - /* This should be the real src vector/register name */ - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - /* Src reg can be Rn, Hn, f[n], p[n], a named parameter, a scalar - * literal or vector literal. - */ - if (token[0] == 'R' || token[0] == 'H') { - srcReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'f') { - /* XXX this might be an identifier! */ - srcReg->File = PROGRAM_INPUT; - if (!Parse_FragReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'p') { - /* XXX this might be an identifier! */ - srcReg->File = PROGRAM_LOCAL_PARAM; - if (!Parse_ProgramParamReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (IsLetter(token[0])){ - GLubyte ident[100]; - GLint paramIndex; - if (!Parse_Identifier(parseState, ident)) - RETURN_ERROR; - paramIndex = _mesa_lookup_parameter_index(parseState->parameters, - -1, (const char *) ident); - if (paramIndex < 0) { - RETURN_ERROR2("Undefined constant or parameter: ", ident); - } - srcReg->File = PROGRAM_NAMED_PARAM; - srcReg->Index = paramIndex; - } - else if (IsDigit(token[0]) || token[0] == '-' || token[0] == '+' || token[0] == '.'){ - /* literal scalar constant */ - GLfloat values[4]; - GLuint paramIndex; - if (!Parse_ScalarConstant(parseState, values)) - RETURN_ERROR; - paramIndex = _mesa_add_unnamed_constant(parseState->parameters, - values, 4, NULL); - srcReg->File = PROGRAM_NAMED_PARAM; - srcReg->Index = paramIndex; - } - else if (token[0] == '{'){ - /* literal vector constant */ - GLfloat values[4]; - GLuint paramIndex; - (void) Parse_String(parseState, "{"); - if (!Parse_VectorConstant(parseState, values)) - RETURN_ERROR; - paramIndex = _mesa_add_unnamed_constant(parseState->parameters, - values, 4, NULL); - srcReg->File = PROGRAM_NAMED_PARAM; - srcReg->Index = paramIndex; - } - else { - RETURN_ERROR2("Invalid source register name", token); - } - - /* init swizzle fields */ - srcReg->Swizzle = SWIZZLE_NOOP; - - /* Look for optional swizzle suffix */ - if (Parse_String(parseState, ".")) { - GLuint swz[4]; - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (!Parse_SwizzleSuffix(token, swz)) - RETURN_ERROR1("Invalid swizzle suffix"); - - srcReg->Swizzle = MAKE_SWIZZLE4(swz[0], swz[1], swz[2], swz[3]); - } - - /* Finish absolute value */ - if (srcReg->Abs && !Parse_String(parseState, "|")) { - RETURN_ERROR1("Expected |"); - } - - return GL_TRUE; -} - - -static GLboolean -Parse_ScalarSrcReg(struct parse_state *parseState, - struct prog_src_register *srcReg) -{ - GLubyte token[100]; - GLfloat sign = 1.0F; - GLboolean needSuffix = GL_TRUE; - GLint idx; - GLuint negateBase, negateAbs; - - /* - * First, take care of +/- and absolute value stuff. - */ - if (Parse_String(parseState, "-")) - sign = -1.0F; - else if (Parse_String(parseState, "+")) - sign = +1.0F; - - if (Parse_String(parseState, "|")) { - srcReg->Abs = GL_TRUE; - negateAbs = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE; - - if (Parse_String(parseState, "-")) - negateBase = NEGATE_XYZW; - else if (Parse_String(parseState, "+")) - negateBase = NEGATE_NONE; - else - negateBase = NEGATE_NONE; - } - else { - srcReg->Abs = GL_FALSE; - negateAbs = NEGATE_NONE; - negateBase = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE; - } - - srcReg->Negate = srcReg->Abs ? negateAbs : negateBase; - - if (!Peek_Token(parseState, token)) - RETURN_ERROR; - - /* Src reg can be R<n>, H<n> or a named fragment attrib */ - if (token[0] == 'R' || token[0] == 'H') { - srcReg->File = PROGRAM_TEMPORARY; - if (!Parse_TempReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == 'f') { - srcReg->File = PROGRAM_INPUT; - if (!Parse_FragReg(parseState, &idx)) - RETURN_ERROR; - srcReg->Index = idx; - } - else if (token[0] == '{') { - /* vector literal */ - GLfloat values[4]; - GLuint paramIndex; - (void) Parse_String(parseState, "{"); - if (!Parse_VectorConstant(parseState, values)) - RETURN_ERROR; - paramIndex = _mesa_add_unnamed_constant(parseState->parameters, - values, 4, NULL); - srcReg->File = PROGRAM_NAMED_PARAM; - srcReg->Index = paramIndex; - } - else if (IsLetter(token[0])){ - /* named param/constant */ - GLubyte ident[100]; - GLint paramIndex; - if (!Parse_Identifier(parseState, ident)) - RETURN_ERROR; - paramIndex = _mesa_lookup_parameter_index(parseState->parameters, - -1, (const char *) ident); - if (paramIndex < 0) { - RETURN_ERROR2("Undefined constant or parameter: ", ident); - } - srcReg->File = PROGRAM_NAMED_PARAM; - srcReg->Index = paramIndex; - } - else if (IsDigit(token[0])) { - /* scalar literal */ - GLfloat values[4]; - GLuint paramIndex; - if (!Parse_ScalarConstant(parseState, values)) - RETURN_ERROR; - paramIndex = _mesa_add_unnamed_constant(parseState->parameters, - values, 4, NULL); - srcReg->Index = paramIndex; - srcReg->File = PROGRAM_NAMED_PARAM; - needSuffix = GL_FALSE; - } - else { - RETURN_ERROR2("Invalid scalar source argument", token); - } - - srcReg->Swizzle = 0; - if (needSuffix) { - /* parse .[xyzw] suffix */ - if (!Parse_String(parseState, ".")) - RETURN_ERROR1("Expected ."); - - if (!Parse_Token(parseState, token)) - RETURN_ERROR; - - if (token[0] == 'x' && token[1] == 0) { - srcReg->Swizzle = 0; - } - else if (token[0] == 'y' && token[1] == 0) { - srcReg->Swizzle = 1; - } - else if (token[0] == 'z' && token[1] == 0) { - srcReg->Swizzle = 2; - } - else if (token[0] == 'w' && token[1] == 0) { - srcReg->Swizzle = 3; - } - else { - RETURN_ERROR1("Invalid scalar source suffix"); - } - } - - /* Finish absolute value */ - if (srcReg->Abs && !Parse_String(parseState, "|")) { - RETURN_ERROR1("Expected |"); - } - - return GL_TRUE; -} - - -static GLboolean -Parse_PrintInstruction(struct parse_state *parseState, - struct prog_instruction *inst) -{ - const GLubyte *str; - GLubyte *msg; - GLuint len; - GLint idx; - - /* The first argument is a literal string 'just like this' */ - if (!Parse_String(parseState, "'")) - RETURN_ERROR1("Expected '"); - - str = parseState->pos; - for (len = 0; str[len] != '\''; len++) /* find closing quote */ - ; - parseState->pos += len + 1; - msg = (GLubyte*) malloc(len + 1); - - memcpy(msg, str, len); - msg[len] = 0; - inst->Data = msg; - - if (Parse_String(parseState, ",")) { - /* got an optional register to print */ - GLubyte token[100]; - GetToken(parseState, token); - if (token[0] == 'o') { - /* dst reg */ - if (!Parse_OutputReg(parseState, &idx)) - RETURN_ERROR; - inst->SrcReg[0].Index = idx; - inst->SrcReg[0].File = PROGRAM_OUTPUT; - } - else { - /* src reg */ - if (!Parse_VectorSrc(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - } - } - else { - inst->SrcReg[0].File = PROGRAM_UNDEFINED; - } - - inst->SrcReg[0].Swizzle = SWIZZLE_NOOP; - inst->SrcReg[0].Abs = GL_FALSE; - inst->SrcReg[0].Negate = NEGATE_NONE; - - return GL_TRUE; -} - - -static GLboolean -Parse_InstructionSequence(struct parse_state *parseState, - struct prog_instruction program[]) -{ - while (1) { - struct prog_instruction *inst = program + parseState->numInst; - struct instruction_pattern instMatch; - GLubyte token[100]; - - /* Initialize the instruction */ - _mesa_init_instructions(inst, 1); - - /* special instructions */ - if (Parse_String(parseState, "DEFINE")) { - GLubyte id[100]; - GLfloat value[7]; /* yes, 7 to be safe */ - if (!Parse_Identifier(parseState, id)) - RETURN_ERROR; - /* XXX make sure id is not a reserved identifer, like R9 */ - if (!Parse_String(parseState, "=")) - RETURN_ERROR1("Expected ="); - if (!Parse_VectorOrScalarConstant(parseState, value)) - RETURN_ERROR; - if (!Parse_String(parseState, ";")) - RETURN_ERROR1("Expected ;"); - if (_mesa_lookup_parameter_index(parseState->parameters, - -1, (const char *) id) >= 0) { - RETURN_ERROR2(id, "already defined"); - } - _mesa_add_named_parameter(parseState->parameters, - (const char *) id, value); - } - else if (Parse_String(parseState, "DECLARE")) { - GLubyte id[100]; - GLfloat value[7] = {0, 0, 0, 0, 0, 0, 0}; /* yes, to be safe */ - if (!Parse_Identifier(parseState, id)) - RETURN_ERROR; - /* XXX make sure id is not a reserved identifer, like R9 */ - if (Parse_String(parseState, "=")) { - if (!Parse_VectorOrScalarConstant(parseState, value)) - RETURN_ERROR; - } - if (!Parse_String(parseState, ";")) - RETURN_ERROR1("Expected ;"); - if (_mesa_lookup_parameter_index(parseState->parameters, - -1, (const char *) id) >= 0) { - RETURN_ERROR2(id, "already declared"); - } - _mesa_add_named_parameter(parseState->parameters, - (const char *) id, value); - } - else if (Parse_String(parseState, "END")) { - inst->Opcode = OPCODE_END; - parseState->numInst++; - if (Parse_Token(parseState, token)) { - RETURN_ERROR1("Code after END opcode."); - } - break; - } - else { - /* general/arithmetic instruction */ - - /* get token */ - if (!Parse_Token(parseState, token)) { - RETURN_ERROR1("Missing END instruction."); - } - - /* try to find matching instuction */ - instMatch = MatchInstruction(token); - if (instMatch.opcode >= MAX_OPCODE) { - /* bad instruction name */ - RETURN_ERROR2("Unexpected token: ", token); - } - - inst->Opcode = instMatch.opcode; - inst->Precision = instMatch.suffixes & (_R | _H | _X); - inst->SaturateMode = (instMatch.suffixes & (_S)) - ? SATURATE_ZERO_ONE : SATURATE_OFF; - inst->CondUpdate = (instMatch.suffixes & (_C)) ? GL_TRUE : GL_FALSE; - - /* - * parse the input and output operands - */ - if (instMatch.outputs == OUTPUT_S || instMatch.outputs == OUTPUT_V) { - if (!Parse_MaskedDstReg(parseState, &inst->DstReg)) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - } - else if (instMatch.outputs == OUTPUT_NONE) { - if (instMatch.opcode == OPCODE_KIL_NV) { - /* This is a little weird, the cond code info is in - * the dest register. - */ - if (!Parse_CondCodeMask(parseState, &inst->DstReg)) - RETURN_ERROR; - } - else { - ASSERT(instMatch.opcode == OPCODE_PRINT); - } - } - - if (instMatch.inputs == INPUT_1V) { - if (!Parse_VectorSrc(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - } - else if (instMatch.inputs == INPUT_2V) { - if (!Parse_VectorSrc(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_VectorSrc(parseState, &inst->SrcReg[1])) - RETURN_ERROR; - } - else if (instMatch.inputs == INPUT_3V) { - if (!Parse_VectorSrc(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_VectorSrc(parseState, &inst->SrcReg[1])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_VectorSrc(parseState, &inst->SrcReg[2])) - RETURN_ERROR; - } - else if (instMatch.inputs == INPUT_1S) { - if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - } - else if (instMatch.inputs == INPUT_2S) { - if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[1])) - RETURN_ERROR; - } - else if (instMatch.inputs == INPUT_CC) { - /* XXX to-do */ - } - else if (instMatch.inputs == INPUT_1V_T) { - GLubyte unit, idx; - if (!Parse_VectorSrc(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_TextureImageId(parseState, &unit, &idx)) - RETURN_ERROR; - inst->TexSrcUnit = unit; - inst->TexSrcTarget = idx; - } - else if (instMatch.inputs == INPUT_3V_T) { - GLubyte unit, idx; - if (!Parse_VectorSrc(parseState, &inst->SrcReg[0])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_VectorSrc(parseState, &inst->SrcReg[1])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_VectorSrc(parseState, &inst->SrcReg[2])) - RETURN_ERROR; - if (!Parse_String(parseState, ",")) - RETURN_ERROR1("Expected ,"); - if (!Parse_TextureImageId(parseState, &unit, &idx)) - RETURN_ERROR; - inst->TexSrcUnit = unit; - inst->TexSrcTarget = idx; - } - else if (instMatch.inputs == INPUT_1V_S) { - if (!Parse_PrintInstruction(parseState, inst)) - RETURN_ERROR; - } - - /* end of statement semicolon */ - if (!Parse_String(parseState, ";")) - RETURN_ERROR1("Expected ;"); - - parseState->numInst++; - - if (parseState->numInst >= MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS) - RETURN_ERROR1("Program too long"); - } - } - return GL_TRUE; -} - - - -/** - * Parse/compile the 'str' returning the compiled 'program'. - * ctx->Program.ErrorPos will be -1 if successful. Otherwise, ErrorPos - * indicates the position of the error in 'str'. - */ -void -_mesa_parse_nv_fragment_program(GLcontext *ctx, GLenum dstTarget, - const GLubyte *str, GLsizei len, - struct gl_fragment_program *program) -{ - struct parse_state parseState; - struct prog_instruction instBuffer[MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS]; - struct prog_instruction *newInst; - GLenum target; - GLubyte *programString; - - /* Make a null-terminated copy of the program string */ - programString = (GLubyte *) MALLOC(len + 1); - if (!programString) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); - return; - } - memcpy(programString, str, len); - programString[len] = 0; - - /* Get ready to parse */ - memset(&parseState, 0, sizeof(struct parse_state)); - parseState.ctx = ctx; - parseState.start = programString; - parseState.program = program; - parseState.numInst = 0; - parseState.curLine = programString; - parseState.parameters = _mesa_new_parameter_list(); - - /* Reset error state */ - _mesa_set_program_error(ctx, -1, NULL); - - /* check the program header */ - if (strncmp((const char *) programString, "!!FP1.0", 7) == 0) { - target = GL_FRAGMENT_PROGRAM_NV; - parseState.pos = programString + 7; - } - else if (strncmp((const char *) programString, "!!FCP1.0", 8) == 0) { - /* fragment / register combiner program - not supported */ - _mesa_set_program_error(ctx, 0, "Invalid fragment program header"); - _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(bad header)"); - return; - } - else { - /* invalid header */ - _mesa_set_program_error(ctx, 0, "Invalid fragment program header"); - _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(bad header)"); - return; - } - - /* make sure target and header match */ - if (target != dstTarget) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glLoadProgramNV(target mismatch 0x%x != 0x%x)", - target, dstTarget); - return; - } - - if (Parse_InstructionSequence(&parseState, instBuffer)) { - GLuint u; - /* successful parse! */ - - if (parseState.outputsWritten == 0) { - /* must write at least one output! */ - _mesa_error(ctx, GL_INVALID_OPERATION, - "Invalid fragment program - no outputs written."); - return; - } - - /* copy the compiled instructions */ - assert(parseState.numInst <= MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS); - newInst = _mesa_alloc_instructions(parseState.numInst); - if (!newInst) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV"); - return; /* out of memory */ - } - _mesa_copy_instructions(newInst, instBuffer, parseState.numInst); - - /* install the program */ - program->Base.Target = target; - if (program->Base.String) { - FREE(program->Base.String); - } - program->Base.String = programString; - program->Base.Format = GL_PROGRAM_FORMAT_ASCII_ARB; - if (program->Base.Instructions) { - free(program->Base.Instructions); - } - program->Base.Instructions = newInst; - program->Base.NumInstructions = parseState.numInst; - program->Base.InputsRead = parseState.inputsRead; - program->Base.OutputsWritten = parseState.outputsWritten; - for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++) - program->Base.TexturesUsed[u] = parseState.texturesUsed[u]; - - /* save program parameters */ - program->Base.Parameters = parseState.parameters; - - /* allocate registers for declared program parameters */ -#if 00 - _mesa_assign_program_registers(&(program->SymbolTable)); -#endif - -#ifdef DEBUG_foo - printf("--- glLoadProgramNV(%d) result ---\n", program->Base.Id); - _mesa_fprint_program_opt(stdout, &program->Base, PROG_PRINT_NV, 0); - printf("----------------------------------\n"); -#endif - } - else { - /* Error! */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV"); - /* NOTE: _mesa_set_program_error would have been called already */ - } -} - - -const char * -_mesa_nv_fragment_input_register_name(GLuint i) -{ - ASSERT(i < MAX_NV_FRAGMENT_PROGRAM_INPUTS); - return InputRegisters[i]; -} - +/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file nvfragparse.c
+ * NVIDIA fragment program parser.
+ * \author Brian Paul
+ */
+
+/*
+ * Regarding GL_NV_fragment_program:
+ *
+ * Portions of this software may use or implement intellectual
+ * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims
+ * any and all warranties with respect to such intellectual property,
+ * including any use thereof or modifications thereto.
+ */
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "program.h"
+#include "prog_parameter.h"
+#include "prog_print.h"
+#include "prog_instruction.h"
+#include "nvfragparse.h"
+
+
+#define INPUT_1V 1
+#define INPUT_2V 2
+#define INPUT_3V 3
+#define INPUT_1S 4
+#define INPUT_2S 5
+#define INPUT_CC 6
+#define INPUT_1V_T 7 /* one source vector, plus textureId */
+#define INPUT_3V_T 8 /* one source vector, plus textureId */
+#define INPUT_NONE 9
+#define INPUT_1V_S 10 /* a string and a vector register */
+#define OUTPUT_V 20
+#define OUTPUT_S 21
+#define OUTPUT_NONE 22
+
+/* IRIX defines some of these */
+#undef _R
+#undef _H
+#undef _X
+#undef _C
+#undef _S
+
+/* Optional suffixes */
+#define _R FLOAT32 /* float */
+#define _H FLOAT16 /* half-float */
+#define _X FIXED12 /* fixed */
+#define _C 0x08 /* set cond codes */
+#define _S 0x10 /* saturate, clamp result to [0,1] */
+
+struct instruction_pattern {
+ const char *name;
+ enum prog_opcode opcode;
+ GLuint inputs;
+ GLuint outputs;
+ GLuint suffixes;
+};
+
+static const struct instruction_pattern Instructions[] = {
+ { "ADD", OPCODE_ADD, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "COS", OPCODE_COS, INPUT_1S, OUTPUT_S, _R | _H | _C | _S },
+ { "DDX", OPCODE_DDX, INPUT_1V, OUTPUT_V, _R | _H | _C | _S },
+ { "DDY", OPCODE_DDY, INPUT_1V, OUTPUT_V, _R | _H | _C | _S },
+ { "DP3", OPCODE_DP3, INPUT_2V, OUTPUT_S, _R | _H | _X | _C | _S },
+ { "DP4", OPCODE_DP4, INPUT_2V, OUTPUT_S, _R | _H | _X | _C | _S },
+ { "DST", OPCODE_DP4, INPUT_2V, OUTPUT_V, _R | _H | _C | _S },
+ { "EX2", OPCODE_DP4, INPUT_1S, OUTPUT_S, _R | _H | _C | _S },
+ { "FLR", OPCODE_FLR, INPUT_1V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "FRC", OPCODE_FRC, INPUT_1V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "KIL", OPCODE_KIL_NV, INPUT_CC, OUTPUT_NONE, 0 },
+ { "LG2", OPCODE_LG2, INPUT_1S, OUTPUT_S, _R | _H | _C | _S },
+ { "LIT", OPCODE_LIT, INPUT_1V, OUTPUT_V, _R | _H | _C | _S },
+ { "LRP", OPCODE_LRP, INPUT_3V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "MAD", OPCODE_MAD, INPUT_3V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "MAX", OPCODE_MAX, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "MIN", OPCODE_MIN, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "MOV", OPCODE_MOV, INPUT_1V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "MUL", OPCODE_MUL, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "PK2H", OPCODE_PK2H, INPUT_1V, OUTPUT_S, 0 },
+ { "PK2US", OPCODE_PK2US, INPUT_1V, OUTPUT_S, 0 },
+ { "PK4B", OPCODE_PK4B, INPUT_1V, OUTPUT_S, 0 },
+ { "PK4UB", OPCODE_PK4UB, INPUT_1V, OUTPUT_S, 0 },
+ { "POW", OPCODE_POW, INPUT_2S, OUTPUT_S, _R | _H | _C | _S },
+ { "RCP", OPCODE_RCP, INPUT_1S, OUTPUT_S, _R | _H | _C | _S },
+ { "RFL", OPCODE_RFL, INPUT_2V, OUTPUT_V, _R | _H | _C | _S },
+ { "RSQ", OPCODE_RSQ, INPUT_1S, OUTPUT_S, _R | _H | _C | _S },
+ { "SEQ", OPCODE_SEQ, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SFL", OPCODE_SFL, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SGE", OPCODE_SGE, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SGT", OPCODE_SGT, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SIN", OPCODE_SIN, INPUT_1S, OUTPUT_S, _R | _H | _C | _S },
+ { "SLE", OPCODE_SLE, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SLT", OPCODE_SLT, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SNE", OPCODE_SNE, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "STR", OPCODE_STR, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "SUB", OPCODE_SUB, INPUT_2V, OUTPUT_V, _R | _H | _X | _C | _S },
+ { "TEX", OPCODE_TEX, INPUT_1V_T, OUTPUT_V, _C | _S },
+ { "TXD", OPCODE_TXD, INPUT_3V_T, OUTPUT_V, _C | _S },
+ { "TXP", OPCODE_TXP_NV, INPUT_1V_T, OUTPUT_V, _C | _S },
+ { "UP2H", OPCODE_UP2H, INPUT_1S, OUTPUT_V, _C | _S },
+ { "UP2US", OPCODE_UP2US, INPUT_1S, OUTPUT_V, _C | _S },
+ { "UP4B", OPCODE_UP4B, INPUT_1S, OUTPUT_V, _C | _S },
+ { "UP4UB", OPCODE_UP4UB, INPUT_1S, OUTPUT_V, _C | _S },
+ { "X2D", OPCODE_X2D, INPUT_3V, OUTPUT_V, _R | _H | _C | _S },
+ { "PRINT", OPCODE_PRINT, INPUT_1V_S, OUTPUT_NONE, 0 },
+ { NULL, (enum prog_opcode) -1, 0, 0, 0 }
+};
+
+
+/*
+ * Information needed or computed during parsing.
+ * Remember, we can't modify the target program object until we've
+ * _successfully_ parsed the program text.
+ */
+struct parse_state {
+ struct gl_context *ctx;
+ const GLubyte *start; /* start of program string */
+ const GLubyte *pos; /* current position */
+ const GLubyte *curLine;
+ struct gl_fragment_program *program; /* current program */
+
+ struct gl_program_parameter_list *parameters;
+
+ GLuint numInst; /* number of instructions parsed */
+ GLuint inputsRead; /* bitmask of input registers used */
+ GLuint outputsWritten; /* bitmask of 1 << FRAG_OUTPUT_* bits */
+ GLuint texturesUsed[MAX_TEXTURE_IMAGE_UNITS];
+};
+
+
+
+/*
+ * Called whenever we find an error during parsing.
+ */
+static void
+record_error(struct parse_state *parseState, const char *msg, int lineNo)
+{
+#ifdef DEBUG
+ GLint line, column;
+ const GLubyte *lineStr;
+ lineStr = _mesa_find_line_column(parseState->start,
+ parseState->pos, &line, &column);
+ _mesa_debug(parseState->ctx,
+ "nvfragparse.c(%d): line %d, column %d:%s (%s)\n",
+ lineNo, line, column, (char *) lineStr, msg);
+ free((void *) lineStr);
+#else
+ (void) lineNo;
+#endif
+
+ /* Check that no error was already recorded. Only record the first one. */
+ if (parseState->ctx->Program.ErrorString[0] == 0) {
+ _mesa_set_program_error(parseState->ctx,
+ parseState->pos - parseState->start,
+ msg);
+ }
+}
+
+
+#define RETURN_ERROR \
+do { \
+ record_error(parseState, "Unexpected end of input.", __LINE__); \
+ return GL_FALSE; \
+} while(0)
+
+#define RETURN_ERROR1(msg) \
+do { \
+ record_error(parseState, msg, __LINE__); \
+ return GL_FALSE; \
+} while(0)
+
+#define RETURN_ERROR2(msg1, msg2) \
+do { \
+ char err[1000]; \
+ sprintf(err, "%s %s", msg1, msg2); \
+ record_error(parseState, err, __LINE__); \
+ return GL_FALSE; \
+} while(0)
+
+
+
+
+/*
+ * Search a list of instruction structures for a match.
+ */
+static struct instruction_pattern
+MatchInstruction(const GLubyte *token)
+{
+ const struct instruction_pattern *inst;
+ struct instruction_pattern result;
+
+ result.name = NULL;
+ result.opcode = MAX_OPCODE; /* i.e. invalid instruction */
+ result.inputs = 0;
+ result.outputs = 0;
+ result.suffixes = 0;
+
+ for (inst = Instructions; inst->name; inst++) {
+ if (strncmp((const char *) token, inst->name, 3) == 0) {
+ /* matched! */
+ int i = 3;
+ result = *inst;
+ result.suffixes = 0;
+ /* look at suffix */
+ if (token[i] == 'R') {
+ result.suffixes |= _R;
+ i++;
+ }
+ else if (token[i] == 'H') {
+ result.suffixes |= _H;
+ i++;
+ }
+ else if (token[i] == 'X') {
+ result.suffixes |= _X;
+ i++;
+ }
+ if (token[i] == 'C') {
+ result.suffixes |= _C;
+ i++;
+ }
+ if (token[i] == '_' && token[i+1] == 'S' &&
+ token[i+2] == 'A' && token[i+3] == 'T') {
+ result.suffixes |= _S;
+ }
+ return result;
+ }
+ }
+
+ return result;
+}
+
+
+
+
+/**********************************************************************/
+
+
+static GLboolean IsLetter(GLubyte b)
+{
+ return (b >= 'a' && b <= 'z') ||
+ (b >= 'A' && b <= 'Z') ||
+ (b == '_') ||
+ (b == '$');
+}
+
+
+static GLboolean IsDigit(GLubyte b)
+{
+ return b >= '0' && b <= '9';
+}
+
+
+static GLboolean IsWhitespace(GLubyte b)
+{
+ return b == ' ' || b == '\t' || b == '\n' || b == '\r';
+}
+
+
+/**
+ * Starting at 'str' find the next token. A token can be an integer,
+ * an identifier or punctuation symbol.
+ * \return <= 0 we found an error, else, return number of characters parsed.
+ */
+static GLint
+GetToken(struct parse_state *parseState, GLubyte *token)
+{
+ const GLubyte *str = parseState->pos;
+ GLint i = 0, j = 0;
+
+ token[0] = 0;
+
+ /* skip whitespace and comments */
+ while (str[i] && (IsWhitespace(str[i]) || str[i] == '#')) {
+ if (str[i] == '#') {
+ /* skip comment */
+ while (str[i] && (str[i] != '\n' && str[i] != '\r')) {
+ i++;
+ }
+ if (str[i] == '\n' || str[i] == '\r')
+ parseState->curLine = str + i + 1;
+ }
+ else {
+ /* skip whitespace */
+ if (str[i] == '\n' || str[i] == '\r')
+ parseState->curLine = str + i + 1;
+ i++;
+ }
+ }
+
+ if (str[i] == 0)
+ return -i;
+
+ /* try matching an integer */
+ while (str[i] && IsDigit(str[i])) {
+ token[j++] = str[i++];
+ }
+ if (j > 0 || !str[i]) {
+ token[j] = 0;
+ return i;
+ }
+
+ /* try matching an identifier */
+ if (IsLetter(str[i])) {
+ while (str[i] && (IsLetter(str[i]) || IsDigit(str[i]))) {
+ token[j++] = str[i++];
+ }
+ token[j] = 0;
+ return i;
+ }
+
+ /* punctuation character */
+ if (str[i]) {
+ token[0] = str[i++];
+ token[1] = 0;
+ return i;
+ }
+
+ /* end of input */
+ token[0] = 0;
+ return i;
+}
+
+
+/**
+ * Get next token from input stream and increment stream pointer past token.
+ */
+static GLboolean
+Parse_Token(struct parse_state *parseState, GLubyte *token)
+{
+ GLint i;
+ i = GetToken(parseState, token);
+ if (i <= 0) {
+ parseState->pos += (-i);
+ return GL_FALSE;
+ }
+ parseState->pos += i;
+ return GL_TRUE;
+}
+
+
+/**
+ * Get next token from input stream but don't increment stream pointer.
+ */
+static GLboolean
+Peek_Token(struct parse_state *parseState, GLubyte *token)
+{
+ GLint i, len;
+ i = GetToken(parseState, token);
+ if (i <= 0) {
+ parseState->pos += (-i);
+ return GL_FALSE;
+ }
+ len = (GLint) strlen((const char *) token);
+ parseState->pos += (i - len);
+ return GL_TRUE;
+}
+
+
+/**********************************************************************/
+
+static const char *InputRegisters[MAX_NV_FRAGMENT_PROGRAM_INPUTS + 1] = {
+ "WPOS", "COL0", "COL1", "FOGC",
+ "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL
+};
+
+
+
+/**********************************************************************/
+
+/**
+ * Try to match 'pattern' as the next token after any whitespace/comments.
+ */
+static GLboolean
+Parse_String(struct parse_state *parseState, const char *pattern)
+{
+ const GLubyte *m;
+ GLint i;
+
+ /* skip whitespace and comments */
+ while (IsWhitespace(*parseState->pos) || *parseState->pos == '#') {
+ if (*parseState->pos == '#') {
+ while (*parseState->pos && (*parseState->pos != '\n' && *parseState->pos != '\r')) {
+ parseState->pos += 1;
+ }
+ if (*parseState->pos == '\n' || *parseState->pos == '\r')
+ parseState->curLine = parseState->pos + 1;
+ }
+ else {
+ /* skip whitespace */
+ if (*parseState->pos == '\n' || *parseState->pos == '\r')
+ parseState->curLine = parseState->pos + 1;
+ parseState->pos += 1;
+ }
+ }
+
+ /* Try to match the pattern */
+ m = parseState->pos;
+ for (i = 0; pattern[i]; i++) {
+ if (*m != (GLubyte) pattern[i])
+ return GL_FALSE;
+ m += 1;
+ }
+ parseState->pos = m;
+
+ return GL_TRUE; /* success */
+}
+
+
+static GLboolean
+Parse_Identifier(struct parse_state *parseState, GLubyte *ident)
+{
+ if (!Parse_Token(parseState, ident))
+ RETURN_ERROR;
+ if (IsLetter(ident[0]))
+ return GL_TRUE;
+ else
+ RETURN_ERROR1("Expected an identfier");
+}
+
+
+/**
+ * Parse a floating point constant, or a defined symbol name.
+ * [+/-]N[.N[eN]]
+ * Output: number[0 .. 3] will get the value.
+ */
+static GLboolean
+Parse_ScalarConstant(struct parse_state *parseState, GLfloat *number)
+{
+ char *end = NULL;
+
+ *number = (GLfloat) _mesa_strtof((const char *) parseState->pos, &end);
+
+ if (end && end > (char *) parseState->pos) {
+ /* got a number */
+ parseState->pos = (GLubyte *) end;
+ number[1] = *number;
+ number[2] = *number;
+ number[3] = *number;
+ return GL_TRUE;
+ }
+ else {
+ /* should be an identifier */
+ GLubyte ident[100];
+ const GLfloat *constant;
+ if (!Parse_Identifier(parseState, ident))
+ RETURN_ERROR1("Expected an identifier");
+ constant = _mesa_lookup_parameter_value(parseState->parameters,
+ -1, (const char *) ident);
+ /* XXX Check that it's a constant and not a parameter */
+ if (!constant) {
+ RETURN_ERROR1("Undefined symbol");
+ }
+ else {
+ COPY_4V(number, constant);
+ return GL_TRUE;
+ }
+ }
+}
+
+
+
+/**
+ * Parse a vector constant, one of:
+ * { float }
+ * { float, float }
+ * { float, float, float }
+ * { float, float, float, float }
+ */
+static GLboolean
+Parse_VectorConstant(struct parse_state *parseState, GLfloat *vec)
+{
+ /* "{" was already consumed */
+
+ ASSIGN_4V(vec, 0.0, 0.0, 0.0, 1.0);
+
+ if (!Parse_ScalarConstant(parseState, vec+0)) /* X */
+ return GL_FALSE;
+
+ if (Parse_String(parseState, "}")) {
+ return GL_TRUE;
+ }
+
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected comma in vector constant");
+
+ if (!Parse_ScalarConstant(parseState, vec+1)) /* Y */
+ return GL_FALSE;
+
+ if (Parse_String(parseState, "}")) {
+ return GL_TRUE;
+ }
+
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected comma in vector constant");
+
+ if (!Parse_ScalarConstant(parseState, vec+2)) /* Z */
+ return GL_FALSE;
+
+ if (Parse_String(parseState, "}")) {
+ return GL_TRUE;
+ }
+
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected comma in vector constant");
+
+ if (!Parse_ScalarConstant(parseState, vec+3)) /* W */
+ return GL_FALSE;
+
+ if (!Parse_String(parseState, "}"))
+ RETURN_ERROR1("Expected closing brace in vector constant");
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse <number>, <varname> or {a, b, c, d}.
+ * Return number of values in the vector or scalar, or zero if parse error.
+ */
+static GLuint
+Parse_VectorOrScalarConstant(struct parse_state *parseState, GLfloat *vec)
+{
+ if (Parse_String(parseState, "{")) {
+ return Parse_VectorConstant(parseState, vec);
+ }
+ else {
+ GLboolean b = Parse_ScalarConstant(parseState, vec);
+ if (b) {
+ vec[1] = vec[2] = vec[3] = vec[0];
+ }
+ return b;
+ }
+}
+
+
+/**
+ * Parse a texture image source:
+ * [TEX0 | TEX1 | .. | TEX15] , [1D | 2D | 3D | CUBE | RECT]
+ */
+static GLboolean
+Parse_TextureImageId(struct parse_state *parseState,
+ GLubyte *texUnit, GLubyte *texTargetBit)
+{
+ GLubyte imageSrc[100];
+ GLint unit;
+
+ if (!Parse_Token(parseState, imageSrc))
+ RETURN_ERROR;
+
+ if (imageSrc[0] != 'T' ||
+ imageSrc[1] != 'E' ||
+ imageSrc[2] != 'X') {
+ RETURN_ERROR1("Expected TEX# source");
+ }
+ unit = atoi((const char *) imageSrc + 3);
+ if ((unit < 0 || unit > MAX_TEXTURE_IMAGE_UNITS) ||
+ (unit == 0 && (imageSrc[3] != '0' || imageSrc[4] != 0))) {
+ RETURN_ERROR1("Invalied TEX# source index");
+ }
+ *texUnit = unit;
+
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+
+ if (Parse_String(parseState, "1D")) {
+ *texTargetBit = TEXTURE_1D_BIT;
+ }
+ else if (Parse_String(parseState, "2D")) {
+ *texTargetBit = TEXTURE_2D_BIT;
+ }
+ else if (Parse_String(parseState, "3D")) {
+ *texTargetBit = TEXTURE_3D_BIT;
+ }
+ else if (Parse_String(parseState, "CUBE")) {
+ *texTargetBit = TEXTURE_CUBE_BIT;
+ }
+ else if (Parse_String(parseState, "RECT")) {
+ *texTargetBit = TEXTURE_RECT_BIT;
+ }
+ else {
+ RETURN_ERROR1("Invalid texture target token");
+ }
+
+ /* update record of referenced texture units */
+ parseState->texturesUsed[*texUnit] |= *texTargetBit;
+ if (_mesa_bitcount(parseState->texturesUsed[*texUnit]) > 1) {
+ RETURN_ERROR1("Only one texture target can be used per texture unit.");
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse a scalar suffix like .x, .y, .z or .w or parse a swizzle suffix
+ * like .wxyz, .xxyy, etc and return the swizzle indexes.
+ */
+static GLboolean
+Parse_SwizzleSuffix(const GLubyte *token, GLuint swizzle[4])
+{
+ if (token[1] == 0) {
+ /* single letter swizzle (scalar) */
+ if (token[0] == 'x')
+ ASSIGN_4V(swizzle, 0, 0, 0, 0);
+ else if (token[0] == 'y')
+ ASSIGN_4V(swizzle, 1, 1, 1, 1);
+ else if (token[0] == 'z')
+ ASSIGN_4V(swizzle, 2, 2, 2, 2);
+ else if (token[0] == 'w')
+ ASSIGN_4V(swizzle, 3, 3, 3, 3);
+ else
+ return GL_FALSE;
+ }
+ else {
+ /* 4-component swizzle (vector) */
+ GLint k;
+ for (k = 0; k < 4 && token[k]; k++) {
+ if (token[k] == 'x')
+ swizzle[k] = 0;
+ else if (token[k] == 'y')
+ swizzle[k] = 1;
+ else if (token[k] == 'z')
+ swizzle[k] = 2;
+ else if (token[k] == 'w')
+ swizzle[k] = 3;
+ else
+ return GL_FALSE;
+ }
+ if (k != 4)
+ return GL_FALSE;
+ }
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_CondCodeMask(struct parse_state *parseState,
+ struct prog_dst_register *dstReg)
+{
+ if (Parse_String(parseState, "EQ"))
+ dstReg->CondMask = COND_EQ;
+ else if (Parse_String(parseState, "GE"))
+ dstReg->CondMask = COND_GE;
+ else if (Parse_String(parseState, "GT"))
+ dstReg->CondMask = COND_GT;
+ else if (Parse_String(parseState, "LE"))
+ dstReg->CondMask = COND_LE;
+ else if (Parse_String(parseState, "LT"))
+ dstReg->CondMask = COND_LT;
+ else if (Parse_String(parseState, "NE"))
+ dstReg->CondMask = COND_NE;
+ else if (Parse_String(parseState, "TR"))
+ dstReg->CondMask = COND_TR;
+ else if (Parse_String(parseState, "FL"))
+ dstReg->CondMask = COND_FL;
+ else
+ RETURN_ERROR1("Invalid condition code mask");
+
+ /* look for optional .xyzw swizzle */
+ if (Parse_String(parseState, ".")) {
+ GLubyte token[100];
+ GLuint swz[4];
+
+ if (!Parse_Token(parseState, token)) /* get xyzw suffix */
+ RETURN_ERROR;
+
+ if (!Parse_SwizzleSuffix(token, swz))
+ RETURN_ERROR1("Invalid swizzle suffix");
+
+ dstReg->CondSwizzle = MAKE_SWIZZLE4(swz[0], swz[1], swz[2], swz[3]);
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse a temporary register: Rnn or Hnn
+ */
+static GLboolean
+Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum)
+{
+ GLubyte token[100];
+
+ /* Should be 'R##' or 'H##' */
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+ if (token[0] != 'R' && token[0] != 'H')
+ RETURN_ERROR1("Expected R## or H##");
+
+ if (IsDigit(token[1])) {
+ GLint reg = atoi((const char *) (token + 1));
+ if (token[0] == 'H')
+ reg += 32;
+ if (reg >= MAX_NV_FRAGMENT_PROGRAM_TEMPS)
+ RETURN_ERROR1("Invalid temporary register name");
+ *tempRegNum = reg;
+ }
+ else {
+ RETURN_ERROR1("Invalid temporary register name");
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse a write-only dummy register: RC or HC.
+ */
+static GLboolean
+Parse_DummyReg(struct parse_state *parseState, GLint *regNum)
+{
+ if (Parse_String(parseState, "RC")) {
+ *regNum = 0;
+ }
+ else if (Parse_String(parseState, "HC")) {
+ *regNum = 1;
+ }
+ else {
+ RETURN_ERROR1("Invalid write-only register name");
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse a program local parameter register "p[##]"
+ */
+static GLboolean
+Parse_ProgramParamReg(struct parse_state *parseState, GLint *regNum)
+{
+ GLubyte token[100];
+
+ if (!Parse_String(parseState, "p["))
+ RETURN_ERROR1("Expected p[");
+
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (IsDigit(token[0])) {
+ /* a numbered program parameter register */
+ GLint reg = atoi((const char *) token);
+ if (reg >= MAX_NV_FRAGMENT_PROGRAM_PARAMS)
+ RETURN_ERROR1("Invalid constant program number");
+ *regNum = reg;
+ }
+ else {
+ RETURN_ERROR;
+ }
+
+ if (!Parse_String(parseState, "]"))
+ RETURN_ERROR1("Expected ]");
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse f[name] - fragment input register
+ */
+static GLboolean
+Parse_FragReg(struct parse_state *parseState, GLint *tempRegNum)
+{
+ GLubyte token[100];
+ GLint j;
+
+ /* Match 'f[' */
+ if (!Parse_String(parseState, "f["))
+ RETURN_ERROR1("Expected f[");
+
+ /* get <name> and look for match */
+ if (!Parse_Token(parseState, token)) {
+ RETURN_ERROR;
+ }
+ for (j = 0; InputRegisters[j]; j++) {
+ if (strcmp((const char *) token, InputRegisters[j]) == 0) {
+ *tempRegNum = j;
+ parseState->inputsRead |= (1 << j);
+ break;
+ }
+ }
+ if (!InputRegisters[j]) {
+ /* unknown input register label */
+ RETURN_ERROR2("Invalid register name", token);
+ }
+
+ /* Match '[' */
+ if (!Parse_String(parseState, "]"))
+ RETURN_ERROR1("Expected ]");
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum)
+{
+ GLubyte token[100];
+
+ /* Match "o[" */
+ if (!Parse_String(parseState, "o["))
+ RETURN_ERROR1("Expected o[");
+
+ /* Get output reg name */
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ /* try to match an output register name */
+ if (strcmp((char *) token, "COLR") == 0 ||
+ strcmp((char *) token, "COLH") == 0) {
+ /* note that we don't distinguish between COLR and COLH */
+ *outputRegNum = FRAG_RESULT_COLOR;
+ parseState->outputsWritten |= (1 << FRAG_RESULT_COLOR);
+ }
+ else if (strcmp((char *) token, "DEPR") == 0) {
+ *outputRegNum = FRAG_RESULT_DEPTH;
+ parseState->outputsWritten |= (1 << FRAG_RESULT_DEPTH);
+ }
+ else {
+ RETURN_ERROR1("Invalid output register name");
+ }
+
+ /* Match ']' */
+ if (!Parse_String(parseState, "]"))
+ RETURN_ERROR1("Expected ]");
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_MaskedDstReg(struct parse_state *parseState,
+ struct prog_dst_register *dstReg)
+{
+ GLubyte token[100];
+ GLint idx;
+
+ /* Dst reg can be R<n>, H<n>, o[n], RC or HC */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (strcmp((const char *) token, "RC") == 0 ||
+ strcmp((const char *) token, "HC") == 0) {
+ /* a write-only register */
+ dstReg->File = PROGRAM_WRITE_ONLY;
+ if (!Parse_DummyReg(parseState, &idx))
+ RETURN_ERROR;
+ dstReg->Index = idx;
+ }
+ else if (token[0] == 'R' || token[0] == 'H') {
+ /* a temporary register */
+ dstReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ dstReg->Index = idx;
+ }
+ else if (token[0] == 'o') {
+ /* an output register */
+ dstReg->File = PROGRAM_OUTPUT;
+ if (!Parse_OutputReg(parseState, &idx))
+ RETURN_ERROR;
+ dstReg->Index = idx;
+ }
+ else {
+ RETURN_ERROR1("Invalid destination register name");
+ }
+
+ /* Parse optional write mask */
+ if (Parse_String(parseState, ".")) {
+ /* got a mask */
+ GLint k = 0;
+
+ if (!Parse_Token(parseState, token)) /* get xyzw writemask */
+ RETURN_ERROR;
+
+ dstReg->WriteMask = 0;
+
+ if (token[k] == 'x') {
+ dstReg->WriteMask |= WRITEMASK_X;
+ k++;
+ }
+ if (token[k] == 'y') {
+ dstReg->WriteMask |= WRITEMASK_Y;
+ k++;
+ }
+ if (token[k] == 'z') {
+ dstReg->WriteMask |= WRITEMASK_Z;
+ k++;
+ }
+ if (token[k] == 'w') {
+ dstReg->WriteMask |= WRITEMASK_W;
+ k++;
+ }
+ if (k == 0) {
+ RETURN_ERROR1("Invalid writemask character");
+ }
+
+ }
+ else {
+ dstReg->WriteMask = WRITEMASK_XYZW;
+ }
+
+ /* optional condition code mask */
+ if (Parse_String(parseState, "(")) {
+ /* ("EQ" | "GE" | "GT" | "LE" | "LT" | "NE" | "TR" | "FL".x|y|z|w) */
+ /* ("EQ" | "GE" | "GT" | "LE" | "LT" | "NE" | "TR" | "FL".[xyzw]) */
+ if (!Parse_CondCodeMask(parseState, dstReg))
+ RETURN_ERROR;
+
+ if (!Parse_String(parseState, ")")) /* consume ")" */
+ RETURN_ERROR1("Expected )");
+
+ return GL_TRUE;
+ }
+ else {
+ /* no cond code mask */
+ dstReg->CondMask = COND_TR;
+ dstReg->CondSwizzle = SWIZZLE_NOOP;
+ return GL_TRUE;
+ }
+}
+
+
+/**
+ * Parse a vector source (register, constant, etc):
+ * <vectorSrc> ::= <absVectorSrc>
+ * | <baseVectorSrc>
+ * <absVectorSrc> ::= <negate> "|" <baseVectorSrc> "|"
+ */
+static GLboolean
+Parse_VectorSrc(struct parse_state *parseState,
+ struct prog_src_register *srcReg)
+{
+ GLfloat sign = 1.0F;
+ GLubyte token[100];
+ GLint idx;
+ GLuint negateBase, negateAbs;
+
+ /*
+ * First, take care of +/- and absolute value stuff.
+ */
+ if (Parse_String(parseState, "-"))
+ sign = -1.0F;
+ else if (Parse_String(parseState, "+"))
+ sign = +1.0F;
+
+ if (Parse_String(parseState, "|")) {
+ srcReg->Abs = GL_TRUE;
+ negateAbs = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE;
+
+ if (Parse_String(parseState, "-"))
+ negateBase = NEGATE_XYZW;
+ else if (Parse_String(parseState, "+"))
+ negateBase = NEGATE_NONE;
+ else
+ negateBase = NEGATE_NONE;
+ }
+ else {
+ srcReg->Abs = GL_FALSE;
+ negateAbs = NEGATE_NONE;
+ negateBase = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE;
+ }
+
+ srcReg->Negate = srcReg->Abs ? negateAbs : negateBase;
+
+ /* This should be the real src vector/register name */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ /* Src reg can be Rn, Hn, f[n], p[n], a named parameter, a scalar
+ * literal or vector literal.
+ */
+ if (token[0] == 'R' || token[0] == 'H') {
+ srcReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'f') {
+ /* XXX this might be an identifier! */
+ srcReg->File = PROGRAM_INPUT;
+ if (!Parse_FragReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'p') {
+ /* XXX this might be an identifier! */
+ srcReg->File = PROGRAM_LOCAL_PARAM;
+ if (!Parse_ProgramParamReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (IsLetter(token[0])){
+ GLubyte ident[100];
+ GLint paramIndex;
+ if (!Parse_Identifier(parseState, ident))
+ RETURN_ERROR;
+ paramIndex = _mesa_lookup_parameter_index(parseState->parameters,
+ -1, (const char *) ident);
+ if (paramIndex < 0) {
+ RETURN_ERROR2("Undefined constant or parameter: ", ident);
+ }
+ srcReg->File = PROGRAM_NAMED_PARAM;
+ srcReg->Index = paramIndex;
+ }
+ else if (IsDigit(token[0]) || token[0] == '-' || token[0] == '+' || token[0] == '.'){
+ /* literal scalar constant */
+ GLfloat values[4];
+ GLuint paramIndex;
+ if (!Parse_ScalarConstant(parseState, values))
+ RETURN_ERROR;
+ paramIndex = _mesa_add_unnamed_constant(parseState->parameters,
+ values, 4, NULL);
+ srcReg->File = PROGRAM_NAMED_PARAM;
+ srcReg->Index = paramIndex;
+ }
+ else if (token[0] == '{'){
+ /* literal vector constant */
+ GLfloat values[4];
+ GLuint paramIndex;
+ (void) Parse_String(parseState, "{");
+ if (!Parse_VectorConstant(parseState, values))
+ RETURN_ERROR;
+ paramIndex = _mesa_add_unnamed_constant(parseState->parameters,
+ values, 4, NULL);
+ srcReg->File = PROGRAM_NAMED_PARAM;
+ srcReg->Index = paramIndex;
+ }
+ else {
+ RETURN_ERROR2("Invalid source register name", token);
+ }
+
+ /* init swizzle fields */
+ srcReg->Swizzle = SWIZZLE_NOOP;
+
+ /* Look for optional swizzle suffix */
+ if (Parse_String(parseState, ".")) {
+ GLuint swz[4];
+
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (!Parse_SwizzleSuffix(token, swz))
+ RETURN_ERROR1("Invalid swizzle suffix");
+
+ srcReg->Swizzle = MAKE_SWIZZLE4(swz[0], swz[1], swz[2], swz[3]);
+ }
+
+ /* Finish absolute value */
+ if (srcReg->Abs && !Parse_String(parseState, "|")) {
+ RETURN_ERROR1("Expected |");
+ }
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_ScalarSrcReg(struct parse_state *parseState,
+ struct prog_src_register *srcReg)
+{
+ GLubyte token[100];
+ GLfloat sign = 1.0F;
+ GLboolean needSuffix = GL_TRUE;
+ GLint idx;
+ GLuint negateBase, negateAbs;
+
+ /*
+ * First, take care of +/- and absolute value stuff.
+ */
+ if (Parse_String(parseState, "-"))
+ sign = -1.0F;
+ else if (Parse_String(parseState, "+"))
+ sign = +1.0F;
+
+ if (Parse_String(parseState, "|")) {
+ srcReg->Abs = GL_TRUE;
+ negateAbs = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE;
+
+ if (Parse_String(parseState, "-"))
+ negateBase = NEGATE_XYZW;
+ else if (Parse_String(parseState, "+"))
+ negateBase = NEGATE_NONE;
+ else
+ negateBase = NEGATE_NONE;
+ }
+ else {
+ srcReg->Abs = GL_FALSE;
+ negateAbs = NEGATE_NONE;
+ negateBase = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE;
+ }
+
+ srcReg->Negate = srcReg->Abs ? negateAbs : negateBase;
+
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ /* Src reg can be R<n>, H<n> or a named fragment attrib */
+ if (token[0] == 'R' || token[0] == 'H') {
+ srcReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'f') {
+ srcReg->File = PROGRAM_INPUT;
+ if (!Parse_FragReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == '{') {
+ /* vector literal */
+ GLfloat values[4];
+ GLuint paramIndex;
+ (void) Parse_String(parseState, "{");
+ if (!Parse_VectorConstant(parseState, values))
+ RETURN_ERROR;
+ paramIndex = _mesa_add_unnamed_constant(parseState->parameters,
+ values, 4, NULL);
+ srcReg->File = PROGRAM_NAMED_PARAM;
+ srcReg->Index = paramIndex;
+ }
+ else if (IsLetter(token[0])){
+ /* named param/constant */
+ GLubyte ident[100];
+ GLint paramIndex;
+ if (!Parse_Identifier(parseState, ident))
+ RETURN_ERROR;
+ paramIndex = _mesa_lookup_parameter_index(parseState->parameters,
+ -1, (const char *) ident);
+ if (paramIndex < 0) {
+ RETURN_ERROR2("Undefined constant or parameter: ", ident);
+ }
+ srcReg->File = PROGRAM_NAMED_PARAM;
+ srcReg->Index = paramIndex;
+ }
+ else if (IsDigit(token[0])) {
+ /* scalar literal */
+ GLfloat values[4];
+ GLuint paramIndex;
+ if (!Parse_ScalarConstant(parseState, values))
+ RETURN_ERROR;
+ paramIndex = _mesa_add_unnamed_constant(parseState->parameters,
+ values, 4, NULL);
+ srcReg->Index = paramIndex;
+ srcReg->File = PROGRAM_NAMED_PARAM;
+ needSuffix = GL_FALSE;
+ }
+ else {
+ RETURN_ERROR2("Invalid scalar source argument", token);
+ }
+
+ srcReg->Swizzle = 0;
+ if (needSuffix) {
+ /* parse .[xyzw] suffix */
+ if (!Parse_String(parseState, "."))
+ RETURN_ERROR1("Expected .");
+
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (token[0] == 'x' && token[1] == 0) {
+ srcReg->Swizzle = 0;
+ }
+ else if (token[0] == 'y' && token[1] == 0) {
+ srcReg->Swizzle = 1;
+ }
+ else if (token[0] == 'z' && token[1] == 0) {
+ srcReg->Swizzle = 2;
+ }
+ else if (token[0] == 'w' && token[1] == 0) {
+ srcReg->Swizzle = 3;
+ }
+ else {
+ RETURN_ERROR1("Invalid scalar source suffix");
+ }
+ }
+
+ /* Finish absolute value */
+ if (srcReg->Abs && !Parse_String(parseState, "|")) {
+ RETURN_ERROR1("Expected |");
+ }
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_PrintInstruction(struct parse_state *parseState,
+ struct prog_instruction *inst)
+{
+ const GLubyte *str;
+ GLubyte *msg;
+ GLuint len;
+ GLint idx;
+
+ /* The first argument is a literal string 'just like this' */
+ if (!Parse_String(parseState, "'"))
+ RETURN_ERROR1("Expected '");
+
+ str = parseState->pos;
+ for (len = 0; str[len] != '\''; len++) /* find closing quote */
+ ;
+ parseState->pos += len + 1;
+ msg = (GLubyte*) malloc(len + 1);
+
+ memcpy(msg, str, len);
+ msg[len] = 0;
+ inst->Data = msg;
+
+ if (Parse_String(parseState, ",")) {
+ /* got an optional register to print */
+ GLubyte token[100];
+ GetToken(parseState, token);
+ if (token[0] == 'o') {
+ /* dst reg */
+ if (!Parse_OutputReg(parseState, &idx))
+ RETURN_ERROR;
+ inst->SrcReg[0].Index = idx;
+ inst->SrcReg[0].File = PROGRAM_OUTPUT;
+ }
+ else {
+ /* src reg */
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ }
+ }
+ else {
+ inst->SrcReg[0].File = PROGRAM_UNDEFINED;
+ }
+
+ inst->SrcReg[0].Swizzle = SWIZZLE_NOOP;
+ inst->SrcReg[0].Abs = GL_FALSE;
+ inst->SrcReg[0].Negate = NEGATE_NONE;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_InstructionSequence(struct parse_state *parseState,
+ struct prog_instruction program[])
+{
+ while (1) {
+ struct prog_instruction *inst = program + parseState->numInst;
+ struct instruction_pattern instMatch;
+ GLubyte token[100];
+
+ /* Initialize the instruction */
+ _mesa_init_instructions(inst, 1);
+
+ /* special instructions */
+ if (Parse_String(parseState, "DEFINE")) {
+ GLubyte id[100];
+ GLfloat value[7]; /* yes, 7 to be safe */
+ if (!Parse_Identifier(parseState, id))
+ RETURN_ERROR;
+ /* XXX make sure id is not a reserved identifer, like R9 */
+ if (!Parse_String(parseState, "="))
+ RETURN_ERROR1("Expected =");
+ if (!Parse_VectorOrScalarConstant(parseState, value))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR1("Expected ;");
+ if (_mesa_lookup_parameter_index(parseState->parameters,
+ -1, (const char *) id) >= 0) {
+ RETURN_ERROR2(id, "already defined");
+ }
+ _mesa_add_named_parameter(parseState->parameters,
+ (const char *) id, value);
+ }
+ else if (Parse_String(parseState, "DECLARE")) {
+ GLubyte id[100];
+ GLfloat value[7] = {0, 0, 0, 0, 0, 0, 0}; /* yes, to be safe */
+ if (!Parse_Identifier(parseState, id))
+ RETURN_ERROR;
+ /* XXX make sure id is not a reserved identifer, like R9 */
+ if (Parse_String(parseState, "=")) {
+ if (!Parse_VectorOrScalarConstant(parseState, value))
+ RETURN_ERROR;
+ }
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR1("Expected ;");
+ if (_mesa_lookup_parameter_index(parseState->parameters,
+ -1, (const char *) id) >= 0) {
+ RETURN_ERROR2(id, "already declared");
+ }
+ _mesa_add_named_parameter(parseState->parameters,
+ (const char *) id, value);
+ }
+ else if (Parse_String(parseState, "END")) {
+ inst->Opcode = OPCODE_END;
+ parseState->numInst++;
+ if (Parse_Token(parseState, token)) {
+ RETURN_ERROR1("Code after END opcode.");
+ }
+ break;
+ }
+ else {
+ /* general/arithmetic instruction */
+
+ /* get token */
+ if (!Parse_Token(parseState, token)) {
+ RETURN_ERROR1("Missing END instruction.");
+ }
+
+ /* try to find matching instuction */
+ instMatch = MatchInstruction(token);
+ if (instMatch.opcode >= MAX_OPCODE) {
+ /* bad instruction name */
+ RETURN_ERROR2("Unexpected token: ", token);
+ }
+
+ inst->Opcode = instMatch.opcode;
+ inst->Precision = instMatch.suffixes & (_R | _H | _X);
+ inst->SaturateMode = (instMatch.suffixes & (_S))
+ ? SATURATE_ZERO_ONE : SATURATE_OFF;
+ inst->CondUpdate = (instMatch.suffixes & (_C)) ? GL_TRUE : GL_FALSE;
+
+ /*
+ * parse the input and output operands
+ */
+ if (instMatch.outputs == OUTPUT_S || instMatch.outputs == OUTPUT_V) {
+ if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ }
+ else if (instMatch.outputs == OUTPUT_NONE) {
+ if (instMatch.opcode == OPCODE_KIL_NV) {
+ /* This is a little weird, the cond code info is in
+ * the dest register.
+ */
+ if (!Parse_CondCodeMask(parseState, &inst->DstReg))
+ RETURN_ERROR;
+ }
+ else {
+ ASSERT(instMatch.opcode == OPCODE_PRINT);
+ }
+ }
+
+ if (instMatch.inputs == INPUT_1V) {
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ }
+ else if (instMatch.inputs == INPUT_2V) {
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[1]))
+ RETURN_ERROR;
+ }
+ else if (instMatch.inputs == INPUT_3V) {
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[1]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[2]))
+ RETURN_ERROR;
+ }
+ else if (instMatch.inputs == INPUT_1S) {
+ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ }
+ else if (instMatch.inputs == INPUT_2S) {
+ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[1]))
+ RETURN_ERROR;
+ }
+ else if (instMatch.inputs == INPUT_CC) {
+ /* XXX to-do */
+ }
+ else if (instMatch.inputs == INPUT_1V_T) {
+ GLubyte unit, idx;
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_TextureImageId(parseState, &unit, &idx))
+ RETURN_ERROR;
+ inst->TexSrcUnit = unit;
+ inst->TexSrcTarget = idx;
+ }
+ else if (instMatch.inputs == INPUT_3V_T) {
+ GLubyte unit, idx;
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[1]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_VectorSrc(parseState, &inst->SrcReg[2]))
+ RETURN_ERROR;
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR1("Expected ,");
+ if (!Parse_TextureImageId(parseState, &unit, &idx))
+ RETURN_ERROR;
+ inst->TexSrcUnit = unit;
+ inst->TexSrcTarget = idx;
+ }
+ else if (instMatch.inputs == INPUT_1V_S) {
+ if (!Parse_PrintInstruction(parseState, inst))
+ RETURN_ERROR;
+ }
+
+ /* end of statement semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR1("Expected ;");
+
+ parseState->numInst++;
+
+ if (parseState->numInst >= MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS)
+ RETURN_ERROR1("Program too long");
+ }
+ }
+ return GL_TRUE;
+}
+
+
+
+/**
+ * Parse/compile the 'str' returning the compiled 'program'.
+ * ctx->Program.ErrorPos will be -1 if successful. Otherwise, ErrorPos
+ * indicates the position of the error in 'str'.
+ */
+void
+_mesa_parse_nv_fragment_program(struct gl_context *ctx, GLenum dstTarget,
+ const GLubyte *str, GLsizei len,
+ struct gl_fragment_program *program)
+{
+ struct parse_state parseState;
+ struct prog_instruction instBuffer[MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS];
+ struct prog_instruction *newInst;
+ GLenum target;
+ GLubyte *programString;
+
+ /* Make a null-terminated copy of the program string */
+ programString = (GLubyte *) MALLOC(len + 1);
+ if (!programString) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV");
+ return;
+ }
+ memcpy(programString, str, len);
+ programString[len] = 0;
+
+ /* Get ready to parse */
+ memset(&parseState, 0, sizeof(struct parse_state));
+ parseState.ctx = ctx;
+ parseState.start = programString;
+ parseState.program = program;
+ parseState.numInst = 0;
+ parseState.curLine = programString;
+ parseState.parameters = _mesa_new_parameter_list();
+
+ /* Reset error state */
+ _mesa_set_program_error(ctx, -1, NULL);
+
+ /* check the program header */
+ if (strncmp((const char *) programString, "!!FP1.0", 7) == 0) {
+ target = GL_FRAGMENT_PROGRAM_NV;
+ parseState.pos = programString + 7;
+ }
+ else if (strncmp((const char *) programString, "!!FCP1.0", 8) == 0) {
+ /* fragment / register combiner program - not supported */
+ _mesa_set_program_error(ctx, 0, "Invalid fragment program header");
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(bad header)");
+ return;
+ }
+ else {
+ /* invalid header */
+ _mesa_set_program_error(ctx, 0, "Invalid fragment program header");
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV(bad header)");
+ return;
+ }
+
+ /* make sure target and header match */
+ if (target != dstTarget) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glLoadProgramNV(target mismatch 0x%x != 0x%x)",
+ target, dstTarget);
+ return;
+ }
+
+ if (Parse_InstructionSequence(&parseState, instBuffer)) {
+ GLuint u;
+ /* successful parse! */
+
+ if (parseState.outputsWritten == 0) {
+ /* must write at least one output! */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "Invalid fragment program - no outputs written.");
+ return;
+ }
+
+ /* copy the compiled instructions */
+ assert(parseState.numInst <= MAX_NV_FRAGMENT_PROGRAM_INSTRUCTIONS);
+ newInst = _mesa_alloc_instructions(parseState.numInst);
+ if (!newInst) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV");
+ return; /* out of memory */
+ }
+ _mesa_copy_instructions(newInst, instBuffer, parseState.numInst);
+
+ /* install the program */
+ program->Base.Target = target;
+ if (program->Base.String) {
+ FREE(program->Base.String);
+ }
+ program->Base.String = programString;
+ program->Base.Format = GL_PROGRAM_FORMAT_ASCII_ARB;
+ if (program->Base.Instructions) {
+ free(program->Base.Instructions);
+ }
+ program->Base.Instructions = newInst;
+ program->Base.NumInstructions = parseState.numInst;
+ program->Base.InputsRead = parseState.inputsRead;
+ program->Base.OutputsWritten = parseState.outputsWritten;
+ for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++)
+ program->Base.TexturesUsed[u] = parseState.texturesUsed[u];
+
+ /* save program parameters */
+ program->Base.Parameters = parseState.parameters;
+
+ /* allocate registers for declared program parameters */
+#if 00
+ _mesa_assign_program_registers(&(program->SymbolTable));
+#endif
+
+#ifdef DEBUG_foo
+ printf("--- glLoadProgramNV(%d) result ---\n", program->Base.Id);
+ _mesa_fprint_program_opt(stdout, &program->Base, PROG_PRINT_NV, 0);
+ printf("----------------------------------\n");
+#endif
+ }
+ else {
+ /* Error! */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV");
+ /* NOTE: _mesa_set_program_error would have been called already */
+ }
+}
+
+
+const char *
+_mesa_nv_fragment_input_register_name(GLuint i)
+{
+ ASSERT(i < MAX_NV_FRAGMENT_PROGRAM_INPUTS);
+ return InputRegisters[i];
+}
+
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