| /* |
| * 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 "glheader.h" |
| #include "context.h" |
| #include "imports.h" |
| #include "macros.h" |
| #include "prog_parameter.h" |
| #include "prog_instruction.h" |
| #include "nvfragparse.h" |
| #include "program.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); |
| _mesa_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]; \ |
| _mesa_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; |
| |
| for (inst = Instructions; inst->name; inst++) { |
| if (_mesa_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; |
| } |
| } |
| result.opcode = MAX_OPCODE; /* i.e. invalid instruction */ |
| 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)_mesa_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 |
| }; |
| |
| static const char *OutputRegisters[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS + 1] = { |
| "COLR", "COLH", |
| /* These are only allows for register combiners */ |
| /* |
| "TEX0", "TEX1", "TEX2", "TEX3", |
| */ |
| "DEPR", 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_strtod((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 = _mesa_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; token[k] && k < 4; 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 = _mesa_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 = _mesa_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 (_mesa_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]; |
| GLint j; |
| |
| /* 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 */ |
| for (j = 0; OutputRegisters[j]; j++) { |
| if (_mesa_strcmp((const char *) token, OutputRegisters[j]) == 0) { |
| static GLuint bothColors = (1 << FRAG_RESULT_COLR) | (1 << FRAG_RESULT_COLH); |
| *outputRegNum = j; |
| parseState->outputsWritten |= (1 << j); |
| if ((parseState->outputsWritten & bothColors) == bothColors) { |
| RETURN_ERROR1("Illegal to write to both o[COLR] and o[COLH]"); |
| } |
| break; |
| } |
| } |
| if (!OutputRegisters[j]) |
| 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 (_mesa_strcmp((const char *) token, "RC") == 0 || |
| _mesa_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; |
| |
| /* |
| * 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; |
| srcReg->NegateAbs = (sign < 0.0F) ? GL_TRUE : GL_FALSE; |
| |
| if (Parse_String(parseState, "-")) |
| srcReg->NegateBase = NEGATE_XYZW; |
| else if (Parse_String(parseState, "+")) |
| srcReg->NegateBase = NEGATE_NONE; |
| else |
| srcReg->NegateBase = NEGATE_NONE; |
| } |
| else { |
| srcReg->Abs = GL_FALSE; |
| srcReg->NegateAbs = GL_FALSE; |
| srcReg->NegateBase = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE; |
| } |
| |
| /* 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; |
| |
| /* |
| * 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; |
| srcReg->NegateAbs = (sign < 0.0F) ? GL_TRUE : GL_FALSE; |
| |
| if (Parse_String(parseState, "-")) |
| srcReg->NegateBase = NEGATE_XYZW; |
| else if (Parse_String(parseState, "+")) |
| srcReg->NegateBase = NEGATE_NONE; |
| else |
| srcReg->NegateBase = NEGATE_NONE; |
| } |
| else { |
| srcReg->Abs = GL_FALSE; |
| srcReg->NegateAbs = GL_FALSE; |
| srcReg->NegateBase = (sign < 0.0F) ? NEGATE_XYZW : NEGATE_NONE; |
| } |
| |
| 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*) _mesa_malloc(len + 1); |
| |
| _mesa_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].NegateBase = NEGATE_NONE; |
| inst->SrcReg[0].Abs = GL_FALSE; |
| inst->SrcReg[0].NegateAbs = GL_FALSE; |
| |
| 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; |
| inst->StringPos = parseState->curLine - parseState->start; |
| assert(inst->StringPos >= 0); |
| 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; |
| inst->StringPos = parseState->curLine - parseState->start; |
| assert(inst->StringPos >= 0); |
| |
| /* |
| * 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 */ |
| _mesa_bzero(&parseState, 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 (_mesa_strncmp((const char *) programString, "!!FP1.0", 7) == 0) { |
| target = GL_FRAGMENT_PROGRAM_NV; |
| parseState.pos = programString + 7; |
| } |
| else if (_mesa_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) { |
| _mesa_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 |
| _mesa_printf("--- glLoadProgramNV(%d) result ---\n", program->Base.Id); |
| _mesa_print_nv_fragment_program(program); |
| _mesa_printf("----------------------------------\n"); |
| #endif |
| } |
| else { |
| /* Error! */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV"); |
| /* NOTE: _mesa_set_program_error would have been called already */ |
| } |
| } |
| |
| |
| static void |
| PrintSrcReg(const struct gl_fragment_program *program, |
| const struct prog_src_register *src) |
| { |
| static const char comps[5] = "xyzw"; |
| |
| if (src->NegateAbs) { |
| _mesa_printf("-"); |
| } |
| if (src->Abs) { |
| _mesa_printf("|"); |
| } |
| if (src->NegateBase) { |
| _mesa_printf("-"); |
| } |
| if (src->File == PROGRAM_NAMED_PARAM) { |
| if (program->Base.Parameters->Parameters[src->Index].Type |
| == PROGRAM_CONSTANT) { |
| const GLfloat *v; |
| v = program->Base.Parameters->ParameterValues[src->Index]; |
| _mesa_printf("{%g, %g, %g, %g}", v[0], v[1], v[2], v[3]); |
| } |
| else { |
| ASSERT(program->Base.Parameters->Parameters[src->Index].Type |
| == PROGRAM_NAMED_PARAM); |
| _mesa_printf("%s", program->Base.Parameters->Parameters[src->Index].Name); |
| } |
| } |
| else if (src->File == PROGRAM_OUTPUT) { |
| _mesa_printf("o[%s]", OutputRegisters[src->Index]); |
| } |
| else if (src->File == PROGRAM_INPUT) { |
| _mesa_printf("f[%s]", InputRegisters[src->Index]); |
| } |
| else if (src->File == PROGRAM_LOCAL_PARAM) { |
| _mesa_printf("p[%d]", src->Index); |
| } |
| else if (src->File == PROGRAM_TEMPORARY) { |
| if (src->Index >= 32) |
| _mesa_printf("H%d", src->Index); |
| else |
| _mesa_printf("R%d", src->Index); |
| } |
| else if (src->File == PROGRAM_WRITE_ONLY) { |
| _mesa_printf("%cC", "HR"[src->Index]); |
| } |
| else { |
| _mesa_problem(NULL, "Invalid fragment register %d", src->Index); |
| return; |
| } |
| if (GET_SWZ(src->Swizzle, 0) == GET_SWZ(src->Swizzle, 1) && |
| GET_SWZ(src->Swizzle, 0) == GET_SWZ(src->Swizzle, 2) && |
| GET_SWZ(src->Swizzle, 0) == GET_SWZ(src->Swizzle, 3)) { |
| _mesa_printf(".%c", comps[GET_SWZ(src->Swizzle, 0)]); |
| } |
| else if (src->Swizzle != SWIZZLE_NOOP) { |
| _mesa_printf(".%c%c%c%c", |
| comps[GET_SWZ(src->Swizzle, 0)], |
| comps[GET_SWZ(src->Swizzle, 1)], |
| comps[GET_SWZ(src->Swizzle, 2)], |
| comps[GET_SWZ(src->Swizzle, 3)]); |
| } |
| if (src->Abs) { |
| _mesa_printf("|"); |
| } |
| } |
| |
| static void |
| PrintTextureSrc(const struct prog_instruction *inst) |
| { |
| _mesa_printf("TEX%d, ", inst->TexSrcUnit); |
| switch (inst->TexSrcTarget) { |
| case TEXTURE_1D_INDEX: |
| _mesa_printf("1D"); |
| break; |
| case TEXTURE_2D_INDEX: |
| _mesa_printf("2D"); |
| break; |
| case TEXTURE_3D_INDEX: |
| _mesa_printf("3D"); |
| break; |
| case TEXTURE_RECT_INDEX: |
| _mesa_printf("RECT"); |
| break; |
| case TEXTURE_CUBE_INDEX: |
| _mesa_printf("CUBE"); |
| break; |
| default: |
| _mesa_problem(NULL, "Invalid textue target in PrintTextureSrc"); |
| } |
| } |
| |
| static void |
| PrintCondCode(const struct prog_dst_register *dst) |
| { |
| static const char *comps = "xyzw"; |
| static const char *ccString[] = { |
| "??", "GT", "EQ", "LT", "UN", "GE", "LE", "NE", "TR", "FL", "??" |
| }; |
| |
| _mesa_printf("%s", ccString[dst->CondMask]); |
| if (GET_SWZ(dst->CondSwizzle, 0) == GET_SWZ(dst->CondSwizzle, 1) && |
| GET_SWZ(dst->CondSwizzle, 0) == GET_SWZ(dst->CondSwizzle, 2) && |
| GET_SWZ(dst->CondSwizzle, 0) == GET_SWZ(dst->CondSwizzle, 3)) { |
| _mesa_printf(".%c", comps[GET_SWZ(dst->CondSwizzle, 0)]); |
| } |
| else if (dst->CondSwizzle != SWIZZLE_NOOP) { |
| _mesa_printf(".%c%c%c%c", |
| comps[GET_SWZ(dst->CondSwizzle, 0)], |
| comps[GET_SWZ(dst->CondSwizzle, 1)], |
| comps[GET_SWZ(dst->CondSwizzle, 2)], |
| comps[GET_SWZ(dst->CondSwizzle, 3)]); |
| } |
| } |
| |
| |
| static void |
| PrintDstReg(const struct prog_dst_register *dst) |
| { |
| if (dst->File == PROGRAM_OUTPUT) { |
| _mesa_printf("o[%s]", OutputRegisters[dst->Index]); |
| } |
| else if (dst->File == PROGRAM_TEMPORARY) { |
| if (dst->Index >= 32) |
| _mesa_printf("H%d", dst->Index); |
| else |
| _mesa_printf("R%d", dst->Index); |
| } |
| else if (dst->File == PROGRAM_LOCAL_PARAM) { |
| _mesa_printf("p[%d]", dst->Index); |
| } |
| else if (dst->File == PROGRAM_WRITE_ONLY) { |
| _mesa_printf("%cC", "HR"[dst->Index]); |
| } |
| else { |
| _mesa_printf("???"); |
| } |
| |
| if (dst->WriteMask != 0 && dst->WriteMask != WRITEMASK_XYZW) { |
| _mesa_printf("."); |
| if (dst->WriteMask & WRITEMASK_X) |
| _mesa_printf("x"); |
| if (dst->WriteMask & WRITEMASK_Y) |
| _mesa_printf("y"); |
| if (dst->WriteMask & WRITEMASK_Z) |
| _mesa_printf("z"); |
| if (dst->WriteMask & WRITEMASK_W) |
| _mesa_printf("w"); |
| } |
| |
| if (dst->CondMask != COND_TR || |
| dst->CondSwizzle != SWIZZLE_NOOP) { |
| _mesa_printf(" ("); |
| PrintCondCode(dst); |
| _mesa_printf(")"); |
| } |
| } |
| |
| |
| /** |
| * Print (unparse) the given vertex program. Just for debugging. |
| */ |
| void |
| _mesa_print_nv_fragment_program(const struct gl_fragment_program *program) |
| { |
| const struct prog_instruction *inst; |
| |
| for (inst = program->Base.Instructions; inst->Opcode != OPCODE_END; inst++) { |
| int i; |
| for (i = 0; Instructions[i].name; i++) { |
| if (inst->Opcode == Instructions[i].opcode) { |
| /* print instruction name */ |
| _mesa_printf("%s", Instructions[i].name); |
| if (inst->Precision == FLOAT16) |
| _mesa_printf("H"); |
| else if (inst->Precision == FIXED12) |
| _mesa_printf("X"); |
| if (inst->CondUpdate) |
| _mesa_printf("C"); |
| if (inst->SaturateMode == SATURATE_ZERO_ONE) |
| _mesa_printf("_SAT"); |
| _mesa_printf(" "); |
| |
| if (Instructions[i].inputs == INPUT_CC) { |
| PrintCondCode(&inst->DstReg); |
| } |
| else if (Instructions[i].outputs == OUTPUT_V || |
| Instructions[i].outputs == OUTPUT_S) { |
| /* print dest register */ |
| PrintDstReg(&inst->DstReg); |
| _mesa_printf(", "); |
| } |
| |
| /* print source register(s) */ |
| if (Instructions[i].inputs == INPUT_1V || |
| Instructions[i].inputs == INPUT_1S) { |
| PrintSrcReg(program, &inst->SrcReg[0]); |
| } |
| else if (Instructions[i].inputs == INPUT_2V || |
| Instructions[i].inputs == INPUT_2S) { |
| PrintSrcReg(program, &inst->SrcReg[0]); |
| _mesa_printf(", "); |
| PrintSrcReg(program, &inst->SrcReg[1]); |
| } |
| else if (Instructions[i].inputs == INPUT_3V) { |
| PrintSrcReg(program, &inst->SrcReg[0]); |
| _mesa_printf(", "); |
| PrintSrcReg(program, &inst->SrcReg[1]); |
| _mesa_printf(", "); |
| PrintSrcReg(program, &inst->SrcReg[2]); |
| } |
| else if (Instructions[i].inputs == INPUT_1V_T) { |
| PrintSrcReg(program, &inst->SrcReg[0]); |
| _mesa_printf(", "); |
| PrintTextureSrc(inst); |
| } |
| else if (Instructions[i].inputs == INPUT_3V_T) { |
| PrintSrcReg(program, &inst->SrcReg[0]); |
| _mesa_printf(", "); |
| PrintSrcReg(program, &inst->SrcReg[1]); |
| _mesa_printf(", "); |
| PrintSrcReg(program, &inst->SrcReg[2]); |
| _mesa_printf(", "); |
| PrintTextureSrc(inst); |
| } |
| _mesa_printf(";\n"); |
| break; |
| } |
| } |
| if (!Instructions[i].name) { |
| _mesa_printf("Invalid opcode %d\n", inst->Opcode); |
| } |
| } |
| _mesa_printf("END\n"); |
| } |
| |
| |
| const char * |
| _mesa_nv_fragment_input_register_name(GLuint i) |
| { |
| ASSERT(i < MAX_NV_FRAGMENT_PROGRAM_INPUTS); |
| return InputRegisters[i]; |
| } |
| |
| |
| const char * |
| _mesa_nv_fragment_output_register_name(GLuint i) |
| { |
| ASSERT(i < MAX_NV_FRAGMENT_PROGRAM_OUTPUTS); |
| return OutputRegisters[i]; |
| } |
