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-rw-r--r--mesalib/src/mesa/program/nvvertparse.c2918
1 files changed, 1459 insertions, 1459 deletions
diff --git a/mesalib/src/mesa/program/nvvertparse.c b/mesalib/src/mesa/program/nvvertparse.c
index 1ac83d0e5..8f7199a99 100644
--- a/mesalib/src/mesa/program/nvvertparse.c
+++ b/mesalib/src/mesa/program/nvvertparse.c
@@ -1,1459 +1,1459 @@
-/*
- * Mesa 3-D graphics library
- * Version: 6.5.2
- *
- * Copyright (C) 1999-2006 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 nvvertparse.c
- * NVIDIA vertex program parser.
- * \author Brian Paul
- */
-
-/*
- * Regarding GL_NV_vertex_program, GL_NV_vertex_program1_1:
- *
- * 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/nvprogram.h"
-#include "nvvertparse.h"
-#include "prog_instruction.h"
-#include "prog_parameter.h"
-#include "prog_print.h"
-#include "program.h"
-
-
-/**
- * Current parsing state. This structure is passed among the parsing
- * functions and keeps track of the current parser position and various
- * program attributes.
- */
-struct parse_state {
- GLcontext *ctx;
- const GLubyte *start;
- const GLubyte *pos;
- const GLubyte *curLine;
- GLboolean isStateProgram;
- GLboolean isPositionInvariant;
- GLboolean isVersion1_1;
- GLbitfield inputsRead;
- GLbitfield outputsWritten;
- GLboolean anyProgRegsWritten;
- GLboolean indirectRegisterFiles;
- GLuint numInst; /* number of instructions parsed */
-};
-
-
-/*
- * 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)
-
-
-
-
-
-static GLboolean IsLetter(GLubyte b)
-{
- return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z');
-}
-
-
-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;
-}
-
-
-/**
- * Try to match 'pattern' as the next token after any whitespace/comments.
- * Advance the current parsing position only if we match the pattern.
- * \return GL_TRUE if pattern is matched, GL_FALSE otherwise.
- */
-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 const char *InputRegisters[MAX_NV_VERTEX_PROGRAM_INPUTS + 1] = {
- "OPOS", "WGHT", "NRML", "COL0", "COL1", "FOGC", "6", "7",
- "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL
-};
-
-static const char *OutputRegisters[MAX_NV_VERTEX_PROGRAM_OUTPUTS + 1] = {
- "HPOS", "COL0", "COL1", "FOGC",
- "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7",
- "PSIZ", "BFC0", "BFC1", NULL
-};
-
-
-
-/**
- * Parse a temporary register: Rnn
- */
-static GLboolean
-Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum)
-{
- GLubyte token[100];
-
- /* Should be 'R##' */
- if (!Parse_Token(parseState, token))
- RETURN_ERROR;
- if (token[0] != 'R')
- RETURN_ERROR1("Expected R##");
-
- if (IsDigit(token[1])) {
- GLint reg = atoi((char *) (token + 1));
- if (reg >= MAX_NV_VERTEX_PROGRAM_TEMPS)
- RETURN_ERROR1("Bad temporary register name");
- *tempRegNum = reg;
- }
- else {
- RETURN_ERROR1("Bad temporary register name");
- }
-
- return GL_TRUE;
-}
-
-
-/**
- * Parse address register "A0.x"
- */
-static GLboolean
-Parse_AddrReg(struct parse_state *parseState)
-{
- /* match 'A0' */
- if (!Parse_String(parseState, "A0"))
- RETURN_ERROR;
-
- /* match '.' */
- if (!Parse_String(parseState, "."))
- RETURN_ERROR;
-
- /* match 'x' */
- if (!Parse_String(parseState, "x"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-/**
- * Parse absolute program parameter register "c[##]"
- */
-static GLboolean
-Parse_AbsParamReg(struct parse_state *parseState, GLint *regNum)
-{
- GLubyte token[100];
-
- if (!Parse_String(parseState, "c"))
- RETURN_ERROR;
-
- if (!Parse_String(parseState, "["))
- RETURN_ERROR;
-
- if (!Parse_Token(parseState, token))
- RETURN_ERROR;
-
- if (IsDigit(token[0])) {
- /* a numbered program parameter register */
- GLint reg = atoi((char *) token);
- if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS)
- RETURN_ERROR1("Bad program parameter number");
- *regNum = reg;
- }
- else {
- RETURN_ERROR;
- }
-
- if (!Parse_String(parseState, "]"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_ParamReg(struct parse_state *parseState, struct prog_src_register *srcReg)
-{
- GLubyte token[100];
-
- if (!Parse_String(parseState, "c"))
- RETURN_ERROR;
-
- if (!Parse_String(parseState, "["))
- RETURN_ERROR;
-
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
-
- if (IsDigit(token[0])) {
- /* a numbered program parameter register */
- GLint reg;
- (void) Parse_Token(parseState, token);
- reg = atoi((char *) token);
- if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS)
- RETURN_ERROR1("Bad program parameter number");
- srcReg->File = PROGRAM_ENV_PARAM;
- srcReg->Index = reg;
- }
- else if (strcmp((const char *) token, "A0") == 0) {
- /* address register "A0.x" */
- if (!Parse_AddrReg(parseState))
- RETURN_ERROR;
-
- srcReg->RelAddr = GL_TRUE;
- srcReg->File = PROGRAM_ENV_PARAM;
- parseState->indirectRegisterFiles |= (1 << srcReg->File);
- /* Look for +/-N offset */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
-
- if (token[0] == '-' || token[0] == '+') {
- const GLubyte sign = token[0];
- (void) Parse_Token(parseState, token); /* consume +/- */
-
- /* an integer should be next */
- if (!Parse_Token(parseState, token))
- RETURN_ERROR;
-
- if (IsDigit(token[0])) {
- const GLint k = atoi((char *) token);
- if (sign == '-') {
- if (k > 64)
- RETURN_ERROR1("Bad address offset");
- srcReg->Index = -k;
- }
- else {
- if (k > 63)
- RETURN_ERROR1("Bad address offset");
- srcReg->Index = k;
- }
- }
- else {
- RETURN_ERROR;
- }
- }
- else {
- /* probably got a ']', catch it below */
- }
- }
- else {
- RETURN_ERROR;
- }
-
- /* Match closing ']' */
- if (!Parse_String(parseState, "]"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-/**
- * Parse v[#] or v[<name>]
- */
-static GLboolean
-Parse_AttribReg(struct parse_state *parseState, GLint *tempRegNum)
-{
- GLubyte token[100];
- GLint j;
-
- /* Match 'v' */
- if (!Parse_String(parseState, "v"))
- RETURN_ERROR;
-
- /* Match '[' */
- if (!Parse_String(parseState, "["))
- RETURN_ERROR;
-
- /* match number or named register */
- if (!Parse_Token(parseState, token))
- RETURN_ERROR;
-
- if (parseState->isStateProgram && token[0] != '0')
- RETURN_ERROR1("Only v[0] accessible in vertex state programs");
-
- if (IsDigit(token[0])) {
- GLint reg = atoi((char *) token);
- if (reg >= MAX_NV_VERTEX_PROGRAM_INPUTS)
- RETURN_ERROR1("Bad vertex attribute register name");
- *tempRegNum = reg;
- }
- else {
- for (j = 0; InputRegisters[j]; j++) {
- if (strcmp((const char *) token, InputRegisters[j]) == 0) {
- *tempRegNum = j;
- break;
- }
- }
- if (!InputRegisters[j]) {
- /* unknown input register label */
- RETURN_ERROR2("Bad register name", token);
- }
- }
-
- /* Match '[' */
- if (!Parse_String(parseState, "]"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum)
-{
- GLubyte token[100];
- GLint start, j;
-
- /* Match 'o' */
- if (!Parse_String(parseState, "o"))
- RETURN_ERROR;
-
- /* Match '[' */
- if (!Parse_String(parseState, "["))
- RETURN_ERROR;
-
- /* Get output reg name */
- if (!Parse_Token(parseState, token))
- RETURN_ERROR;
-
- if (parseState->isPositionInvariant)
- start = 1; /* skip HPOS register name */
- else
- start = 0;
-
- /* try to match an output register name */
- for (j = start; OutputRegisters[j]; j++) {
- if (strcmp((const char *) token, OutputRegisters[j]) == 0) {
- *outputRegNum = j;
- break;
- }
- }
- if (!OutputRegisters[j])
- RETURN_ERROR1("Unrecognized 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> or o[n] */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
-
- if (token[0] == 'R') {
- /* a temporary register */
- dstReg->File = PROGRAM_TEMPORARY;
- if (!Parse_TempReg(parseState, &idx))
- RETURN_ERROR;
- dstReg->Index = idx;
- }
- else if (!parseState->isStateProgram && token[0] == 'o') {
- /* an output register */
- dstReg->File = PROGRAM_OUTPUT;
- if (!Parse_OutputReg(parseState, &idx))
- RETURN_ERROR;
- dstReg->Index = idx;
- }
- else if (parseState->isStateProgram && token[0] == 'c' &&
- parseState->isStateProgram) {
- /* absolute program parameter register */
- /* Only valid for vertex state programs */
- dstReg->File = PROGRAM_ENV_PARAM;
- if (!Parse_AbsParamReg(parseState, &idx))
- RETURN_ERROR;
- dstReg->Index = idx;
- }
- else {
- RETURN_ERROR1("Bad destination register name");
- }
-
- /* Parse optional write mask */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
-
- if (token[0] == '.') {
- /* got a mask */
- GLint k = 0;
-
- if (!Parse_String(parseState, "."))
- RETURN_ERROR;
-
- if (!Parse_Token(parseState, token))
- 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("Bad writemask character");
- }
- return GL_TRUE;
- }
- else {
- dstReg->WriteMask = WRITEMASK_XYZW;
- return GL_TRUE;
- }
-}
-
-
-static GLboolean
-Parse_SwizzleSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg)
-{
- GLubyte token[100];
- GLint idx;
-
- srcReg->RelAddr = GL_FALSE;
-
- /* check for '-' */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
- if (token[0] == '-') {
- (void) Parse_String(parseState, "-");
- srcReg->Negate = NEGATE_XYZW;
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
- }
- else {
- srcReg->Negate = NEGATE_NONE;
- }
-
- /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
- if (token[0] == 'R') {
- srcReg->File = PROGRAM_TEMPORARY;
- if (!Parse_TempReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else if (token[0] == 'c') {
- if (!Parse_ParamReg(parseState, srcReg))
- RETURN_ERROR;
- }
- else if (token[0] == 'v') {
- srcReg->File = PROGRAM_INPUT;
- if (!Parse_AttribReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else {
- RETURN_ERROR2("Bad source register name", token);
- }
-
- /* init swizzle fields */
- srcReg->Swizzle = SWIZZLE_NOOP;
-
- /* Look for optional swizzle suffix */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
- if (token[0] == '.') {
- (void) Parse_String(parseState, "."); /* consume . */
-
- if (!Parse_Token(parseState, token))
- RETURN_ERROR;
-
- if (token[1] == 0) {
- /* single letter swizzle */
- if (token[0] == 'x')
- srcReg->Swizzle = SWIZZLE_XXXX;
- else if (token[0] == 'y')
- srcReg->Swizzle = SWIZZLE_YYYY;
- else if (token[0] == 'z')
- srcReg->Swizzle = SWIZZLE_ZZZZ;
- else if (token[0] == 'w')
- srcReg->Swizzle = SWIZZLE_WWWW;
- else
- RETURN_ERROR1("Expected x, y, z, or w");
- }
- else {
- /* 2, 3 or 4-component swizzle */
- GLint k;
-
- srcReg->Swizzle = 0;
-
- for (k = 0; token[k] && k < 5; k++) {
- if (token[k] == 'x')
- srcReg->Swizzle |= 0 << (k*3);
- else if (token[k] == 'y')
- srcReg->Swizzle |= 1 << (k*3);
- else if (token[k] == 'z')
- srcReg->Swizzle |= 2 << (k*3);
- else if (token[k] == 'w')
- srcReg->Swizzle |= 3 << (k*3);
- else
- RETURN_ERROR;
- }
- if (k >= 5)
- RETURN_ERROR;
- }
- }
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_ScalarSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg)
-{
- GLubyte token[100];
- GLint idx;
-
- srcReg->RelAddr = GL_FALSE;
-
- /* check for '-' */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
- if (token[0] == '-') {
- srcReg->Negate = NEGATE_XYZW;
- (void) Parse_String(parseState, "-"); /* consume '-' */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
- }
- else {
- srcReg->Negate = NEGATE_NONE;
- }
-
- /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
- if (token[0] == 'R') {
- srcReg->File = PROGRAM_TEMPORARY;
- if (!Parse_TempReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else if (token[0] == 'c') {
- if (!Parse_ParamReg(parseState, srcReg))
- RETURN_ERROR;
- }
- else if (token[0] == 'v') {
- srcReg->File = PROGRAM_INPUT;
- if (!Parse_AttribReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else {
- RETURN_ERROR2("Bad source register name", token);
- }
-
- /* Look for .[xyzw] suffix */
- if (!Parse_String(parseState, "."))
- RETURN_ERROR;
-
- 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("Bad scalar source suffix");
- }
-
- return GL_TRUE;
-}
-
-
-static GLint
-Parse_UnaryOpInstruction(struct parse_state *parseState,
- struct prog_instruction *inst,
- enum prog_opcode opcode)
-{
- if (opcode == OPCODE_ABS && !parseState->isVersion1_1)
- RETURN_ERROR1("ABS illegal for vertex program 1.0");
-
- inst->Opcode = opcode;
-
- /* dest reg */
- if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* src arg */
- if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
- RETURN_ERROR;
-
- /* semicolon */
- if (!Parse_String(parseState, ";"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_BiOpInstruction(struct parse_state *parseState,
- struct prog_instruction *inst,
- enum prog_opcode opcode)
-{
- if (opcode == OPCODE_DPH && !parseState->isVersion1_1)
- RETURN_ERROR1("DPH illegal for vertex program 1.0");
- if (opcode == OPCODE_SUB && !parseState->isVersion1_1)
- RETURN_ERROR1("SUB illegal for vertex program 1.0");
-
- inst->Opcode = opcode;
-
- /* dest reg */
- if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* first src arg */
- if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* second src arg */
- if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1]))
- RETURN_ERROR;
-
- /* semicolon */
- if (!Parse_String(parseState, ";"))
- RETURN_ERROR;
-
- /* make sure we don't reference more than one program parameter register */
- if (inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[0].Index != inst->SrcReg[1].Index)
- RETURN_ERROR1("Can't reference two program parameter registers");
-
- /* make sure we don't reference more than one vertex attribute register */
- if (inst->SrcReg[0].File == PROGRAM_INPUT &&
- inst->SrcReg[1].File == PROGRAM_INPUT &&
- inst->SrcReg[0].Index != inst->SrcReg[1].Index)
- RETURN_ERROR1("Can't reference two vertex attribute registers");
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_TriOpInstruction(struct parse_state *parseState,
- struct prog_instruction *inst,
- enum prog_opcode opcode)
-{
- inst->Opcode = opcode;
-
- /* dest reg */
- if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* first src arg */
- if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* second src arg */
- if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1]))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* third src arg */
- if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[2]))
- RETURN_ERROR;
-
- /* semicolon */
- if (!Parse_String(parseState, ";"))
- RETURN_ERROR;
-
- /* make sure we don't reference more than one program parameter register */
- if ((inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[0].Index != inst->SrcReg[1].Index) ||
- (inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[2].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[0].Index != inst->SrcReg[2].Index) ||
- (inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[2].File == PROGRAM_ENV_PARAM &&
- inst->SrcReg[1].Index != inst->SrcReg[2].Index))
- RETURN_ERROR1("Can only reference one program register");
-
- /* make sure we don't reference more than one vertex attribute register */
- if ((inst->SrcReg[0].File == PROGRAM_INPUT &&
- inst->SrcReg[1].File == PROGRAM_INPUT &&
- inst->SrcReg[0].Index != inst->SrcReg[1].Index) ||
- (inst->SrcReg[0].File == PROGRAM_INPUT &&
- inst->SrcReg[2].File == PROGRAM_INPUT &&
- inst->SrcReg[0].Index != inst->SrcReg[2].Index) ||
- (inst->SrcReg[1].File == PROGRAM_INPUT &&
- inst->SrcReg[2].File == PROGRAM_INPUT &&
- inst->SrcReg[1].Index != inst->SrcReg[2].Index))
- RETURN_ERROR1("Can only reference one input register");
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_ScalarInstruction(struct parse_state *parseState,
- struct prog_instruction *inst,
- enum prog_opcode opcode)
-{
- if (opcode == OPCODE_RCC && !parseState->isVersion1_1)
- RETURN_ERROR1("RCC illegal for vertex program 1.0");
-
- inst->Opcode = opcode;
-
- /* dest reg */
- if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* first src arg */
- if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
- RETURN_ERROR;
-
- /* semicolon */
- if (!Parse_String(parseState, ";"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_AddressInstruction(struct parse_state *parseState, struct prog_instruction *inst)
-{
- inst->Opcode = OPCODE_ARL;
-
- /* Make ARB_vp backends happy */
- inst->DstReg.File = PROGRAM_ADDRESS;
- inst->DstReg.WriteMask = WRITEMASK_X;
- inst->DstReg.Index = 0;
-
- /* dest A0 reg */
- if (!Parse_AddrReg(parseState))
- RETURN_ERROR;
-
- /* comma */
- if (!Parse_String(parseState, ","))
- RETURN_ERROR;
-
- /* parse src reg */
- if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
- RETURN_ERROR;
-
- /* semicolon */
- if (!Parse_String(parseState, ";"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_EndInstruction(struct parse_state *parseState, struct prog_instruction *inst)
-{
- GLubyte token[100];
-
- inst->Opcode = OPCODE_END;
-
- /* this should fail! */
- if (Parse_Token(parseState, token))
- RETURN_ERROR2("Unexpected token after END:", token);
- else
- return GL_TRUE;
-}
-
-
-/**
- * The PRINT instruction is Mesa-specific and is meant as a debugging aid for
- * the vertex program developer.
- * The NV_vertex_program extension grammar is modified as follows:
- *
- * <instruction> ::= <ARL-instruction>
- * | ...
- * | <PRINT-instruction>
- *
- * <PRINT-instruction> ::= "PRINT" <string literal>
- * | "PRINT" <string literal> "," <srcReg>
- * | "PRINT" <string literal> "," <dstReg>
- */
-static GLboolean
-Parse_PrintInstruction(struct parse_state *parseState, struct prog_instruction *inst)
-{
- const GLubyte *str;
- GLubyte *msg;
- GLuint len;
- GLubyte token[100];
- struct prog_src_register *srcReg = &inst->SrcReg[0];
- GLint idx;
-
- inst->Opcode = OPCODE_PRINT;
-
- /* The first argument is a literal string 'just like this' */
- if (!Parse_String(parseState, "'"))
- RETURN_ERROR;
-
- 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;
-
- /* comma */
- if (Parse_String(parseState, ",")) {
-
- /* The second argument is a register name */
- if (!Peek_Token(parseState, token))
- RETURN_ERROR;
-
- srcReg->RelAddr = GL_FALSE;
- srcReg->Negate = NEGATE_NONE;
- srcReg->Swizzle = SWIZZLE_NOOP;
-
- /* Register can be R<n>, c[n], c[n +/- offset], a named vertex attrib,
- * or an o[n] output register.
- */
- if (token[0] == 'R') {
- srcReg->File = PROGRAM_TEMPORARY;
- if (!Parse_TempReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else if (token[0] == 'c') {
- srcReg->File = PROGRAM_ENV_PARAM;
- if (!Parse_ParamReg(parseState, srcReg))
- RETURN_ERROR;
- }
- else if (token[0] == 'v') {
- srcReg->File = PROGRAM_INPUT;
- if (!Parse_AttribReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else if (token[0] == 'o') {
- srcReg->File = PROGRAM_OUTPUT;
- if (!Parse_OutputReg(parseState, &idx))
- RETURN_ERROR;
- srcReg->Index = idx;
- }
- else {
- RETURN_ERROR2("Bad source register name", token);
- }
- }
- else {
- srcReg->File = PROGRAM_UNDEFINED;
- }
-
- /* semicolon */
- if (!Parse_String(parseState, ";"))
- RETURN_ERROR;
-
- return GL_TRUE;
-}
-
-
-static GLboolean
-Parse_OptionSequence(struct parse_state *parseState,
- struct prog_instruction program[])
-{
- (void) program;
- while (1) {
- if (!Parse_String(parseState, "OPTION"))
- return GL_TRUE; /* ok, not an OPTION statement */
- if (Parse_String(parseState, "NV_position_invariant")) {
- parseState->isPositionInvariant = GL_TRUE;
- }
- else {
- RETURN_ERROR1("unexpected OPTION statement");
- }
- if (!Parse_String(parseState, ";"))
- return GL_FALSE;
- }
-}
-
-
-static GLboolean
-Parse_InstructionSequence(struct parse_state *parseState,
- struct prog_instruction program[])
-{
- while (1) {
- struct prog_instruction *inst = program + parseState->numInst;
-
- /* Initialize the instruction */
- _mesa_init_instructions(inst, 1);
-
- if (Parse_String(parseState, "MOV")) {
- if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_MOV))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "LIT")) {
- if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_LIT))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "ABS")) {
- if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_ABS))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "MUL")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MUL))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "ADD")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_ADD))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "DP3")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP3))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "DP4")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP4))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "DST")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DST))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "MIN")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MIN))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "MAX")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MAX))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "SLT")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SLT))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "SGE")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SGE))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "DPH")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DPH))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "SUB")) {
- if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SUB))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "MAD")) {
- if (!Parse_TriOpInstruction(parseState, inst, OPCODE_MAD))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "RCP")) {
- if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCP))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "RSQ")) {
- if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RSQ))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "EXP")) {
- if (!Parse_ScalarInstruction(parseState, inst, OPCODE_EXP))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "LOG")) {
- if (!Parse_ScalarInstruction(parseState, inst, OPCODE_LOG))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "RCC")) {
- if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCC))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "ARL")) {
- if (!Parse_AddressInstruction(parseState, inst))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "PRINT")) {
- if (!Parse_PrintInstruction(parseState, inst))
- RETURN_ERROR;
- }
- else if (Parse_String(parseState, "END")) {
- if (!Parse_EndInstruction(parseState, inst))
- RETURN_ERROR;
- else {
- parseState->numInst++;
- return GL_TRUE; /* all done */
- }
- }
- else {
- /* bad instruction name */
- RETURN_ERROR1("Unexpected token");
- }
-
- /* examine input/output registers */
- if (inst->DstReg.File == PROGRAM_OUTPUT)
- parseState->outputsWritten |= (1 << inst->DstReg.Index);
- else if (inst->DstReg.File == PROGRAM_ENV_PARAM)
- parseState->anyProgRegsWritten = GL_TRUE;
-
- if (inst->SrcReg[0].File == PROGRAM_INPUT)
- parseState->inputsRead |= (1 << inst->SrcReg[0].Index);
- if (inst->SrcReg[1].File == PROGRAM_INPUT)
- parseState->inputsRead |= (1 << inst->SrcReg[1].Index);
- if (inst->SrcReg[2].File == PROGRAM_INPUT)
- parseState->inputsRead |= (1 << inst->SrcReg[2].Index);
-
- parseState->numInst++;
-
- if (parseState->numInst >= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS)
- RETURN_ERROR1("Program too long");
- }
-
- RETURN_ERROR;
-}
-
-
-static GLboolean
-Parse_Program(struct parse_state *parseState,
- struct prog_instruction instBuffer[])
-{
- if (parseState->isVersion1_1) {
- if (!Parse_OptionSequence(parseState, instBuffer)) {
- return GL_FALSE;
- }
- }
- return Parse_InstructionSequence(parseState, instBuffer);
-}
-
-
-/**
- * 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_vertex_program(GLcontext *ctx, GLenum dstTarget,
- const GLubyte *str, GLsizei len,
- struct gl_vertex_program *program)
-{
- struct parse_state parseState;
- struct prog_instruction instBuffer[MAX_NV_VERTEX_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 */
- parseState.ctx = ctx;
- parseState.start = programString;
- parseState.isPositionInvariant = GL_FALSE;
- parseState.isVersion1_1 = GL_FALSE;
- parseState.numInst = 0;
- parseState.inputsRead = 0;
- parseState.outputsWritten = 0;
- parseState.anyProgRegsWritten = GL_FALSE;
- parseState.indirectRegisterFiles = 0x0;
-
- /* Reset error state */
- _mesa_set_program_error(ctx, -1, NULL);
-
- /* check the program header */
- if (strncmp((const char *) programString, "!!VP1.0", 7) == 0) {
- target = GL_VERTEX_PROGRAM_NV;
- parseState.pos = programString + 7;
- parseState.isStateProgram = GL_FALSE;
- }
- else if (strncmp((const char *) programString, "!!VP1.1", 7) == 0) {
- target = GL_VERTEX_PROGRAM_NV;
- parseState.pos = programString + 7;
- parseState.isStateProgram = GL_FALSE;
- parseState.isVersion1_1 = GL_TRUE;
- }
- else if (strncmp((const char *) programString, "!!VSP1.0", 8) == 0) {
- target = GL_VERTEX_STATE_PROGRAM_NV;
- parseState.pos = programString + 8;
- parseState.isStateProgram = GL_TRUE;
- }
- else {
- /* invalid header */
- ctx->Program.ErrorPos = 0;
- _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)");
- return;
- }
-
-
- if (Parse_Program(&parseState, instBuffer)) {
- gl_state_index state_tokens[STATE_LENGTH] = {0, 0, 0, 0, 0};
- int i;
-
- /* successful parse! */
-
- if (parseState.isStateProgram) {
- if (!parseState.anyProgRegsWritten) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glLoadProgramNV(c[#] not written)");
- return;
- }
- }
- else {
- if (!parseState.isPositionInvariant &&
- !(parseState.outputsWritten & (1 << VERT_RESULT_HPOS))) {
- /* bit 1 = HPOS register */
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glLoadProgramNV(HPOS not written)");
- return;
- }
- }
-
- /* copy the compiled instructions */
- assert(parseState.numInst <= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS);
- newInst = _mesa_alloc_instructions(parseState.numInst);
- if (!newInst) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV");
- free(programString);
- 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.InputsRead = parseState.inputsRead;
- if (parseState.isPositionInvariant)
- program->Base.InputsRead |= VERT_BIT_POS;
- program->Base.NumInstructions = parseState.numInst;
- program->Base.OutputsWritten = parseState.outputsWritten;
- program->IsPositionInvariant = parseState.isPositionInvariant;
- program->IsNVProgram = GL_TRUE;
-
-#ifdef DEBUG_foo
- printf("--- glLoadProgramNV result ---\n");
- _mesa_fprint_program_opt(stdout, &program->Base, PROG_PRINT_NV, 0);
- printf("------------------------------\n");
-#endif
-
- if (program->Base.Parameters)
- _mesa_free_parameter_list(program->Base.Parameters);
-
- program->Base.Parameters = _mesa_new_parameter_list ();
- program->Base.NumParameters = 0;
-
- program->Base.IndirectRegisterFiles = parseState.indirectRegisterFiles;
-
- state_tokens[0] = STATE_VERTEX_PROGRAM;
- state_tokens[1] = STATE_ENV;
- /* Add refs to all of the potential params, in order. If we want to not
- * upload everything, _mesa_layout_parameters is the answer.
- */
- for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS; i++) {
- GLint index;
- state_tokens[2] = i;
- index = _mesa_add_state_reference(program->Base.Parameters,
- state_tokens);
- assert(index == i);
- }
- program->Base.NumParameters = program->Base.Parameters->NumParameters;
-
- _mesa_setup_nv_temporary_count(ctx, &program->Base);
- _mesa_emit_nv_temp_initialization(ctx, &program->Base);
- }
- else {
- /* Error! */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV");
- /* NOTE: _mesa_set_program_error would have been called already */
- /* GL_NV_vertex_program isn't supposed to set the error string
- * so we reset it here.
- */
- _mesa_set_program_error(ctx, ctx->Program.ErrorPos, NULL);
- }
-}
-
-
-const char *
-_mesa_nv_vertex_input_register_name(GLuint i)
-{
- ASSERT(i < MAX_NV_VERTEX_PROGRAM_INPUTS);
- return InputRegisters[i];
-}
-
-
-const char *
-_mesa_nv_vertex_output_register_name(GLuint i)
-{
- ASSERT(i < MAX_NV_VERTEX_PROGRAM_OUTPUTS);
- return OutputRegisters[i];
-}
-
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.2
+ *
+ * Copyright (C) 1999-2006 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 nvvertparse.c
+ * NVIDIA vertex program parser.
+ * \author Brian Paul
+ */
+
+/*
+ * Regarding GL_NV_vertex_program, GL_NV_vertex_program1_1:
+ *
+ * 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/nvprogram.h"
+#include "nvvertparse.h"
+#include "prog_instruction.h"
+#include "prog_parameter.h"
+#include "prog_print.h"
+#include "program.h"
+
+
+/**
+ * Current parsing state. This structure is passed among the parsing
+ * functions and keeps track of the current parser position and various
+ * program attributes.
+ */
+struct parse_state {
+ struct gl_context *ctx;
+ const GLubyte *start;
+ const GLubyte *pos;
+ const GLubyte *curLine;
+ GLboolean isStateProgram;
+ GLboolean isPositionInvariant;
+ GLboolean isVersion1_1;
+ GLbitfield inputsRead;
+ GLbitfield outputsWritten;
+ GLboolean anyProgRegsWritten;
+ GLboolean indirectRegisterFiles;
+ GLuint numInst; /* number of instructions parsed */
+};
+
+
+/*
+ * 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)
+
+
+
+
+
+static GLboolean IsLetter(GLubyte b)
+{
+ return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z');
+}
+
+
+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;
+}
+
+
+/**
+ * Try to match 'pattern' as the next token after any whitespace/comments.
+ * Advance the current parsing position only if we match the pattern.
+ * \return GL_TRUE if pattern is matched, GL_FALSE otherwise.
+ */
+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 const char *InputRegisters[MAX_NV_VERTEX_PROGRAM_INPUTS + 1] = {
+ "OPOS", "WGHT", "NRML", "COL0", "COL1", "FOGC", "6", "7",
+ "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL
+};
+
+static const char *OutputRegisters[MAX_NV_VERTEX_PROGRAM_OUTPUTS + 1] = {
+ "HPOS", "COL0", "COL1", "FOGC",
+ "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7",
+ "PSIZ", "BFC0", "BFC1", NULL
+};
+
+
+
+/**
+ * Parse a temporary register: Rnn
+ */
+static GLboolean
+Parse_TempReg(struct parse_state *parseState, GLint *tempRegNum)
+{
+ GLubyte token[100];
+
+ /* Should be 'R##' */
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+ if (token[0] != 'R')
+ RETURN_ERROR1("Expected R##");
+
+ if (IsDigit(token[1])) {
+ GLint reg = atoi((char *) (token + 1));
+ if (reg >= MAX_NV_VERTEX_PROGRAM_TEMPS)
+ RETURN_ERROR1("Bad temporary register name");
+ *tempRegNum = reg;
+ }
+ else {
+ RETURN_ERROR1("Bad temporary register name");
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse address register "A0.x"
+ */
+static GLboolean
+Parse_AddrReg(struct parse_state *parseState)
+{
+ /* match 'A0' */
+ if (!Parse_String(parseState, "A0"))
+ RETURN_ERROR;
+
+ /* match '.' */
+ if (!Parse_String(parseState, "."))
+ RETURN_ERROR;
+
+ /* match 'x' */
+ if (!Parse_String(parseState, "x"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse absolute program parameter register "c[##]"
+ */
+static GLboolean
+Parse_AbsParamReg(struct parse_state *parseState, GLint *regNum)
+{
+ GLubyte token[100];
+
+ if (!Parse_String(parseState, "c"))
+ RETURN_ERROR;
+
+ if (!Parse_String(parseState, "["))
+ RETURN_ERROR;
+
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (IsDigit(token[0])) {
+ /* a numbered program parameter register */
+ GLint reg = atoi((char *) token);
+ if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS)
+ RETURN_ERROR1("Bad program parameter number");
+ *regNum = reg;
+ }
+ else {
+ RETURN_ERROR;
+ }
+
+ if (!Parse_String(parseState, "]"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_ParamReg(struct parse_state *parseState, struct prog_src_register *srcReg)
+{
+ GLubyte token[100];
+
+ if (!Parse_String(parseState, "c"))
+ RETURN_ERROR;
+
+ if (!Parse_String(parseState, "["))
+ RETURN_ERROR;
+
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (IsDigit(token[0])) {
+ /* a numbered program parameter register */
+ GLint reg;
+ (void) Parse_Token(parseState, token);
+ reg = atoi((char *) token);
+ if (reg >= MAX_NV_VERTEX_PROGRAM_PARAMS)
+ RETURN_ERROR1("Bad program parameter number");
+ srcReg->File = PROGRAM_ENV_PARAM;
+ srcReg->Index = reg;
+ }
+ else if (strcmp((const char *) token, "A0") == 0) {
+ /* address register "A0.x" */
+ if (!Parse_AddrReg(parseState))
+ RETURN_ERROR;
+
+ srcReg->RelAddr = GL_TRUE;
+ srcReg->File = PROGRAM_ENV_PARAM;
+ parseState->indirectRegisterFiles |= (1 << srcReg->File);
+ /* Look for +/-N offset */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (token[0] == '-' || token[0] == '+') {
+ const GLubyte sign = token[0];
+ (void) Parse_Token(parseState, token); /* consume +/- */
+
+ /* an integer should be next */
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (IsDigit(token[0])) {
+ const GLint k = atoi((char *) token);
+ if (sign == '-') {
+ if (k > 64)
+ RETURN_ERROR1("Bad address offset");
+ srcReg->Index = -k;
+ }
+ else {
+ if (k > 63)
+ RETURN_ERROR1("Bad address offset");
+ srcReg->Index = k;
+ }
+ }
+ else {
+ RETURN_ERROR;
+ }
+ }
+ else {
+ /* probably got a ']', catch it below */
+ }
+ }
+ else {
+ RETURN_ERROR;
+ }
+
+ /* Match closing ']' */
+ if (!Parse_String(parseState, "]"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Parse v[#] or v[<name>]
+ */
+static GLboolean
+Parse_AttribReg(struct parse_state *parseState, GLint *tempRegNum)
+{
+ GLubyte token[100];
+ GLint j;
+
+ /* Match 'v' */
+ if (!Parse_String(parseState, "v"))
+ RETURN_ERROR;
+
+ /* Match '[' */
+ if (!Parse_String(parseState, "["))
+ RETURN_ERROR;
+
+ /* match number or named register */
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (parseState->isStateProgram && token[0] != '0')
+ RETURN_ERROR1("Only v[0] accessible in vertex state programs");
+
+ if (IsDigit(token[0])) {
+ GLint reg = atoi((char *) token);
+ if (reg >= MAX_NV_VERTEX_PROGRAM_INPUTS)
+ RETURN_ERROR1("Bad vertex attribute register name");
+ *tempRegNum = reg;
+ }
+ else {
+ for (j = 0; InputRegisters[j]; j++) {
+ if (strcmp((const char *) token, InputRegisters[j]) == 0) {
+ *tempRegNum = j;
+ break;
+ }
+ }
+ if (!InputRegisters[j]) {
+ /* unknown input register label */
+ RETURN_ERROR2("Bad register name", token);
+ }
+ }
+
+ /* Match '[' */
+ if (!Parse_String(parseState, "]"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_OutputReg(struct parse_state *parseState, GLint *outputRegNum)
+{
+ GLubyte token[100];
+ GLint start, j;
+
+ /* Match 'o' */
+ if (!Parse_String(parseState, "o"))
+ RETURN_ERROR;
+
+ /* Match '[' */
+ if (!Parse_String(parseState, "["))
+ RETURN_ERROR;
+
+ /* Get output reg name */
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (parseState->isPositionInvariant)
+ start = 1; /* skip HPOS register name */
+ else
+ start = 0;
+
+ /* try to match an output register name */
+ for (j = start; OutputRegisters[j]; j++) {
+ if (strcmp((const char *) token, OutputRegisters[j]) == 0) {
+ *outputRegNum = j;
+ break;
+ }
+ }
+ if (!OutputRegisters[j])
+ RETURN_ERROR1("Unrecognized 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> or o[n] */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (token[0] == 'R') {
+ /* a temporary register */
+ dstReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ dstReg->Index = idx;
+ }
+ else if (!parseState->isStateProgram && token[0] == 'o') {
+ /* an output register */
+ dstReg->File = PROGRAM_OUTPUT;
+ if (!Parse_OutputReg(parseState, &idx))
+ RETURN_ERROR;
+ dstReg->Index = idx;
+ }
+ else if (parseState->isStateProgram && token[0] == 'c' &&
+ parseState->isStateProgram) {
+ /* absolute program parameter register */
+ /* Only valid for vertex state programs */
+ dstReg->File = PROGRAM_ENV_PARAM;
+ if (!Parse_AbsParamReg(parseState, &idx))
+ RETURN_ERROR;
+ dstReg->Index = idx;
+ }
+ else {
+ RETURN_ERROR1("Bad destination register name");
+ }
+
+ /* Parse optional write mask */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (token[0] == '.') {
+ /* got a mask */
+ GLint k = 0;
+
+ if (!Parse_String(parseState, "."))
+ RETURN_ERROR;
+
+ if (!Parse_Token(parseState, token))
+ 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("Bad writemask character");
+ }
+ return GL_TRUE;
+ }
+ else {
+ dstReg->WriteMask = WRITEMASK_XYZW;
+ return GL_TRUE;
+ }
+}
+
+
+static GLboolean
+Parse_SwizzleSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg)
+{
+ GLubyte token[100];
+ GLint idx;
+
+ srcReg->RelAddr = GL_FALSE;
+
+ /* check for '-' */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+ if (token[0] == '-') {
+ (void) Parse_String(parseState, "-");
+ srcReg->Negate = NEGATE_XYZW;
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+ }
+ else {
+ srcReg->Negate = NEGATE_NONE;
+ }
+
+ /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
+ if (token[0] == 'R') {
+ srcReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'c') {
+ if (!Parse_ParamReg(parseState, srcReg))
+ RETURN_ERROR;
+ }
+ else if (token[0] == 'v') {
+ srcReg->File = PROGRAM_INPUT;
+ if (!Parse_AttribReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else {
+ RETURN_ERROR2("Bad source register name", token);
+ }
+
+ /* init swizzle fields */
+ srcReg->Swizzle = SWIZZLE_NOOP;
+
+ /* Look for optional swizzle suffix */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+ if (token[0] == '.') {
+ (void) Parse_String(parseState, "."); /* consume . */
+
+ if (!Parse_Token(parseState, token))
+ RETURN_ERROR;
+
+ if (token[1] == 0) {
+ /* single letter swizzle */
+ if (token[0] == 'x')
+ srcReg->Swizzle = SWIZZLE_XXXX;
+ else if (token[0] == 'y')
+ srcReg->Swizzle = SWIZZLE_YYYY;
+ else if (token[0] == 'z')
+ srcReg->Swizzle = SWIZZLE_ZZZZ;
+ else if (token[0] == 'w')
+ srcReg->Swizzle = SWIZZLE_WWWW;
+ else
+ RETURN_ERROR1("Expected x, y, z, or w");
+ }
+ else {
+ /* 2, 3 or 4-component swizzle */
+ GLint k;
+
+ srcReg->Swizzle = 0;
+
+ for (k = 0; token[k] && k < 5; k++) {
+ if (token[k] == 'x')
+ srcReg->Swizzle |= 0 << (k*3);
+ else if (token[k] == 'y')
+ srcReg->Swizzle |= 1 << (k*3);
+ else if (token[k] == 'z')
+ srcReg->Swizzle |= 2 << (k*3);
+ else if (token[k] == 'w')
+ srcReg->Swizzle |= 3 << (k*3);
+ else
+ RETURN_ERROR;
+ }
+ if (k >= 5)
+ RETURN_ERROR;
+ }
+ }
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_ScalarSrcReg(struct parse_state *parseState, struct prog_src_register *srcReg)
+{
+ GLubyte token[100];
+ GLint idx;
+
+ srcReg->RelAddr = GL_FALSE;
+
+ /* check for '-' */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+ if (token[0] == '-') {
+ srcReg->Negate = NEGATE_XYZW;
+ (void) Parse_String(parseState, "-"); /* consume '-' */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+ }
+ else {
+ srcReg->Negate = NEGATE_NONE;
+ }
+
+ /* Src reg can be R<n>, c[n], c[n +/- offset], or a named vertex attrib */
+ if (token[0] == 'R') {
+ srcReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'c') {
+ if (!Parse_ParamReg(parseState, srcReg))
+ RETURN_ERROR;
+ }
+ else if (token[0] == 'v') {
+ srcReg->File = PROGRAM_INPUT;
+ if (!Parse_AttribReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else {
+ RETURN_ERROR2("Bad source register name", token);
+ }
+
+ /* Look for .[xyzw] suffix */
+ if (!Parse_String(parseState, "."))
+ RETURN_ERROR;
+
+ 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("Bad scalar source suffix");
+ }
+
+ return GL_TRUE;
+}
+
+
+static GLint
+Parse_UnaryOpInstruction(struct parse_state *parseState,
+ struct prog_instruction *inst,
+ enum prog_opcode opcode)
+{
+ if (opcode == OPCODE_ABS && !parseState->isVersion1_1)
+ RETURN_ERROR1("ABS illegal for vertex program 1.0");
+
+ inst->Opcode = opcode;
+
+ /* dest reg */
+ if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* src arg */
+ if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+
+ /* semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_BiOpInstruction(struct parse_state *parseState,
+ struct prog_instruction *inst,
+ enum prog_opcode opcode)
+{
+ if (opcode == OPCODE_DPH && !parseState->isVersion1_1)
+ RETURN_ERROR1("DPH illegal for vertex program 1.0");
+ if (opcode == OPCODE_SUB && !parseState->isVersion1_1)
+ RETURN_ERROR1("SUB illegal for vertex program 1.0");
+
+ inst->Opcode = opcode;
+
+ /* dest reg */
+ if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* first src arg */
+ if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* second src arg */
+ if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1]))
+ RETURN_ERROR;
+
+ /* semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR;
+
+ /* make sure we don't reference more than one program parameter register */
+ if (inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[0].Index != inst->SrcReg[1].Index)
+ RETURN_ERROR1("Can't reference two program parameter registers");
+
+ /* make sure we don't reference more than one vertex attribute register */
+ if (inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[1].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index != inst->SrcReg[1].Index)
+ RETURN_ERROR1("Can't reference two vertex attribute registers");
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_TriOpInstruction(struct parse_state *parseState,
+ struct prog_instruction *inst,
+ enum prog_opcode opcode)
+{
+ inst->Opcode = opcode;
+
+ /* dest reg */
+ if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* first src arg */
+ if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* second src arg */
+ if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[1]))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* third src arg */
+ if (!Parse_SwizzleSrcReg(parseState, &inst->SrcReg[2]))
+ RETURN_ERROR;
+
+ /* semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR;
+
+ /* make sure we don't reference more than one program parameter register */
+ if ((inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[0].Index != inst->SrcReg[1].Index) ||
+ (inst->SrcReg[0].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[2].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[0].Index != inst->SrcReg[2].Index) ||
+ (inst->SrcReg[1].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[2].File == PROGRAM_ENV_PARAM &&
+ inst->SrcReg[1].Index != inst->SrcReg[2].Index))
+ RETURN_ERROR1("Can only reference one program register");
+
+ /* make sure we don't reference more than one vertex attribute register */
+ if ((inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[1].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index != inst->SrcReg[1].Index) ||
+ (inst->SrcReg[0].File == PROGRAM_INPUT &&
+ inst->SrcReg[2].File == PROGRAM_INPUT &&
+ inst->SrcReg[0].Index != inst->SrcReg[2].Index) ||
+ (inst->SrcReg[1].File == PROGRAM_INPUT &&
+ inst->SrcReg[2].File == PROGRAM_INPUT &&
+ inst->SrcReg[1].Index != inst->SrcReg[2].Index))
+ RETURN_ERROR1("Can only reference one input register");
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_ScalarInstruction(struct parse_state *parseState,
+ struct prog_instruction *inst,
+ enum prog_opcode opcode)
+{
+ if (opcode == OPCODE_RCC && !parseState->isVersion1_1)
+ RETURN_ERROR1("RCC illegal for vertex program 1.0");
+
+ inst->Opcode = opcode;
+
+ /* dest reg */
+ if (!Parse_MaskedDstReg(parseState, &inst->DstReg))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* first src arg */
+ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+
+ /* semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_AddressInstruction(struct parse_state *parseState, struct prog_instruction *inst)
+{
+ inst->Opcode = OPCODE_ARL;
+
+ /* Make ARB_vp backends happy */
+ inst->DstReg.File = PROGRAM_ADDRESS;
+ inst->DstReg.WriteMask = WRITEMASK_X;
+ inst->DstReg.Index = 0;
+
+ /* dest A0 reg */
+ if (!Parse_AddrReg(parseState))
+ RETURN_ERROR;
+
+ /* comma */
+ if (!Parse_String(parseState, ","))
+ RETURN_ERROR;
+
+ /* parse src reg */
+ if (!Parse_ScalarSrcReg(parseState, &inst->SrcReg[0]))
+ RETURN_ERROR;
+
+ /* semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_EndInstruction(struct parse_state *parseState, struct prog_instruction *inst)
+{
+ GLubyte token[100];
+
+ inst->Opcode = OPCODE_END;
+
+ /* this should fail! */
+ if (Parse_Token(parseState, token))
+ RETURN_ERROR2("Unexpected token after END:", token);
+ else
+ return GL_TRUE;
+}
+
+
+/**
+ * The PRINT instruction is Mesa-specific and is meant as a debugging aid for
+ * the vertex program developer.
+ * The NV_vertex_program extension grammar is modified as follows:
+ *
+ * <instruction> ::= <ARL-instruction>
+ * | ...
+ * | <PRINT-instruction>
+ *
+ * <PRINT-instruction> ::= "PRINT" <string literal>
+ * | "PRINT" <string literal> "," <srcReg>
+ * | "PRINT" <string literal> "," <dstReg>
+ */
+static GLboolean
+Parse_PrintInstruction(struct parse_state *parseState, struct prog_instruction *inst)
+{
+ const GLubyte *str;
+ GLubyte *msg;
+ GLuint len;
+ GLubyte token[100];
+ struct prog_src_register *srcReg = &inst->SrcReg[0];
+ GLint idx;
+
+ inst->Opcode = OPCODE_PRINT;
+
+ /* The first argument is a literal string 'just like this' */
+ if (!Parse_String(parseState, "'"))
+ RETURN_ERROR;
+
+ 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;
+
+ /* comma */
+ if (Parse_String(parseState, ",")) {
+
+ /* The second argument is a register name */
+ if (!Peek_Token(parseState, token))
+ RETURN_ERROR;
+
+ srcReg->RelAddr = GL_FALSE;
+ srcReg->Negate = NEGATE_NONE;
+ srcReg->Swizzle = SWIZZLE_NOOP;
+
+ /* Register can be R<n>, c[n], c[n +/- offset], a named vertex attrib,
+ * or an o[n] output register.
+ */
+ if (token[0] == 'R') {
+ srcReg->File = PROGRAM_TEMPORARY;
+ if (!Parse_TempReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'c') {
+ srcReg->File = PROGRAM_ENV_PARAM;
+ if (!Parse_ParamReg(parseState, srcReg))
+ RETURN_ERROR;
+ }
+ else if (token[0] == 'v') {
+ srcReg->File = PROGRAM_INPUT;
+ if (!Parse_AttribReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else if (token[0] == 'o') {
+ srcReg->File = PROGRAM_OUTPUT;
+ if (!Parse_OutputReg(parseState, &idx))
+ RETURN_ERROR;
+ srcReg->Index = idx;
+ }
+ else {
+ RETURN_ERROR2("Bad source register name", token);
+ }
+ }
+ else {
+ srcReg->File = PROGRAM_UNDEFINED;
+ }
+
+ /* semicolon */
+ if (!Parse_String(parseState, ";"))
+ RETURN_ERROR;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_OptionSequence(struct parse_state *parseState,
+ struct prog_instruction program[])
+{
+ (void) program;
+ while (1) {
+ if (!Parse_String(parseState, "OPTION"))
+ return GL_TRUE; /* ok, not an OPTION statement */
+ if (Parse_String(parseState, "NV_position_invariant")) {
+ parseState->isPositionInvariant = GL_TRUE;
+ }
+ else {
+ RETURN_ERROR1("unexpected OPTION statement");
+ }
+ if (!Parse_String(parseState, ";"))
+ return GL_FALSE;
+ }
+}
+
+
+static GLboolean
+Parse_InstructionSequence(struct parse_state *parseState,
+ struct prog_instruction program[])
+{
+ while (1) {
+ struct prog_instruction *inst = program + parseState->numInst;
+
+ /* Initialize the instruction */
+ _mesa_init_instructions(inst, 1);
+
+ if (Parse_String(parseState, "MOV")) {
+ if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_MOV))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "LIT")) {
+ if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_LIT))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "ABS")) {
+ if (!Parse_UnaryOpInstruction(parseState, inst, OPCODE_ABS))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "MUL")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MUL))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "ADD")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_ADD))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "DP3")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP3))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "DP4")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DP4))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "DST")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DST))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "MIN")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MIN))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "MAX")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_MAX))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "SLT")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SLT))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "SGE")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SGE))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "DPH")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_DPH))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "SUB")) {
+ if (!Parse_BiOpInstruction(parseState, inst, OPCODE_SUB))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "MAD")) {
+ if (!Parse_TriOpInstruction(parseState, inst, OPCODE_MAD))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "RCP")) {
+ if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCP))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "RSQ")) {
+ if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RSQ))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "EXP")) {
+ if (!Parse_ScalarInstruction(parseState, inst, OPCODE_EXP))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "LOG")) {
+ if (!Parse_ScalarInstruction(parseState, inst, OPCODE_LOG))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "RCC")) {
+ if (!Parse_ScalarInstruction(parseState, inst, OPCODE_RCC))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "ARL")) {
+ if (!Parse_AddressInstruction(parseState, inst))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "PRINT")) {
+ if (!Parse_PrintInstruction(parseState, inst))
+ RETURN_ERROR;
+ }
+ else if (Parse_String(parseState, "END")) {
+ if (!Parse_EndInstruction(parseState, inst))
+ RETURN_ERROR;
+ else {
+ parseState->numInst++;
+ return GL_TRUE; /* all done */
+ }
+ }
+ else {
+ /* bad instruction name */
+ RETURN_ERROR1("Unexpected token");
+ }
+
+ /* examine input/output registers */
+ if (inst->DstReg.File == PROGRAM_OUTPUT)
+ parseState->outputsWritten |= (1 << inst->DstReg.Index);
+ else if (inst->DstReg.File == PROGRAM_ENV_PARAM)
+ parseState->anyProgRegsWritten = GL_TRUE;
+
+ if (inst->SrcReg[0].File == PROGRAM_INPUT)
+ parseState->inputsRead |= (1 << inst->SrcReg[0].Index);
+ if (inst->SrcReg[1].File == PROGRAM_INPUT)
+ parseState->inputsRead |= (1 << inst->SrcReg[1].Index);
+ if (inst->SrcReg[2].File == PROGRAM_INPUT)
+ parseState->inputsRead |= (1 << inst->SrcReg[2].Index);
+
+ parseState->numInst++;
+
+ if (parseState->numInst >= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS)
+ RETURN_ERROR1("Program too long");
+ }
+
+ RETURN_ERROR;
+}
+
+
+static GLboolean
+Parse_Program(struct parse_state *parseState,
+ struct prog_instruction instBuffer[])
+{
+ if (parseState->isVersion1_1) {
+ if (!Parse_OptionSequence(parseState, instBuffer)) {
+ return GL_FALSE;
+ }
+ }
+ return Parse_InstructionSequence(parseState, instBuffer);
+}
+
+
+/**
+ * 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_vertex_program(struct gl_context *ctx, GLenum dstTarget,
+ const GLubyte *str, GLsizei len,
+ struct gl_vertex_program *program)
+{
+ struct parse_state parseState;
+ struct prog_instruction instBuffer[MAX_NV_VERTEX_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 */
+ parseState.ctx = ctx;
+ parseState.start = programString;
+ parseState.isPositionInvariant = GL_FALSE;
+ parseState.isVersion1_1 = GL_FALSE;
+ parseState.numInst = 0;
+ parseState.inputsRead = 0;
+ parseState.outputsWritten = 0;
+ parseState.anyProgRegsWritten = GL_FALSE;
+ parseState.indirectRegisterFiles = 0x0;
+
+ /* Reset error state */
+ _mesa_set_program_error(ctx, -1, NULL);
+
+ /* check the program header */
+ if (strncmp((const char *) programString, "!!VP1.0", 7) == 0) {
+ target = GL_VERTEX_PROGRAM_NV;
+ parseState.pos = programString + 7;
+ parseState.isStateProgram = GL_FALSE;
+ }
+ else if (strncmp((const char *) programString, "!!VP1.1", 7) == 0) {
+ target = GL_VERTEX_PROGRAM_NV;
+ parseState.pos = programString + 7;
+ parseState.isStateProgram = GL_FALSE;
+ parseState.isVersion1_1 = GL_TRUE;
+ }
+ else if (strncmp((const char *) programString, "!!VSP1.0", 8) == 0) {
+ target = GL_VERTEX_STATE_PROGRAM_NV;
+ parseState.pos = programString + 8;
+ parseState.isStateProgram = GL_TRUE;
+ }
+ else {
+ /* invalid header */
+ ctx->Program.ErrorPos = 0;
+ _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)");
+ return;
+ }
+
+
+ if (Parse_Program(&parseState, instBuffer)) {
+ gl_state_index state_tokens[STATE_LENGTH] = {0, 0, 0, 0, 0};
+ int i;
+
+ /* successful parse! */
+
+ if (parseState.isStateProgram) {
+ if (!parseState.anyProgRegsWritten) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glLoadProgramNV(c[#] not written)");
+ return;
+ }
+ }
+ else {
+ if (!parseState.isPositionInvariant &&
+ !(parseState.outputsWritten & (1 << VERT_RESULT_HPOS))) {
+ /* bit 1 = HPOS register */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glLoadProgramNV(HPOS not written)");
+ return;
+ }
+ }
+
+ /* copy the compiled instructions */
+ assert(parseState.numInst <= MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS);
+ newInst = _mesa_alloc_instructions(parseState.numInst);
+ if (!newInst) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV");
+ free(programString);
+ 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.InputsRead = parseState.inputsRead;
+ if (parseState.isPositionInvariant)
+ program->Base.InputsRead |= VERT_BIT_POS;
+ program->Base.NumInstructions = parseState.numInst;
+ program->Base.OutputsWritten = parseState.outputsWritten;
+ program->IsPositionInvariant = parseState.isPositionInvariant;
+ program->IsNVProgram = GL_TRUE;
+
+#ifdef DEBUG_foo
+ printf("--- glLoadProgramNV result ---\n");
+ _mesa_fprint_program_opt(stdout, &program->Base, PROG_PRINT_NV, 0);
+ printf("------------------------------\n");
+#endif
+
+ if (program->Base.Parameters)
+ _mesa_free_parameter_list(program->Base.Parameters);
+
+ program->Base.Parameters = _mesa_new_parameter_list ();
+ program->Base.NumParameters = 0;
+
+ program->Base.IndirectRegisterFiles = parseState.indirectRegisterFiles;
+
+ state_tokens[0] = STATE_VERTEX_PROGRAM;
+ state_tokens[1] = STATE_ENV;
+ /* Add refs to all of the potential params, in order. If we want to not
+ * upload everything, _mesa_layout_parameters is the answer.
+ */
+ for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS; i++) {
+ GLint index;
+ state_tokens[2] = i;
+ index = _mesa_add_state_reference(program->Base.Parameters,
+ state_tokens);
+ assert(index == i);
+ }
+ program->Base.NumParameters = program->Base.Parameters->NumParameters;
+
+ _mesa_setup_nv_temporary_count(ctx, &program->Base);
+ _mesa_emit_nv_temp_initialization(ctx, &program->Base);
+ }
+ else {
+ /* Error! */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV");
+ /* NOTE: _mesa_set_program_error would have been called already */
+ /* GL_NV_vertex_program isn't supposed to set the error string
+ * so we reset it here.
+ */
+ _mesa_set_program_error(ctx, ctx->Program.ErrorPos, NULL);
+ }
+}
+
+
+const char *
+_mesa_nv_vertex_input_register_name(GLuint i)
+{
+ ASSERT(i < MAX_NV_VERTEX_PROGRAM_INPUTS);
+ return InputRegisters[i];
+}
+
+
+const char *
+_mesa_nv_vertex_output_register_name(GLuint i)
+{
+ ASSERT(i < MAX_NV_VERTEX_PROGRAM_OUTPUTS);
+ return OutputRegisters[i];
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 07:09:37 +0000