0,0 → 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 { |
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]; |
} |
|