Moved from src/mesa/main

1 files changed, 1496 insertions, 0 deletions

diff --git a/src/mesa/shader/nvvertparse.c b/src/mesa/shader/nvvertparse.c
new file mode 100644
index 00000000000..bacf5a5af3b
--- /dev/null
+++ b/src/mesa/shader/nvvertparse.c
@@ -0,0 +1,1496 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.0.1
+ *
+ * Copyright (C) 1999-2004  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 "glheader.h"
+#include "context.h"
+#include "hash.h"
+#include "imports.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "nvprogram.h"
+#include "nvvertparse.h"
+#include "nvvertprog.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;
+   GLuint inputsRead;
+   GLuint outputsWritten;
+   GLboolean anyProgRegsWritten;
+   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);
+   _mesa_free((void *) lineStr);
+#else
+   (void) lineNo;
+#endif
+
+   /* Check that no error was already recorded.  Only record the first one. */
+   if (parseState->ctx->Program.ErrorString[0] == 0) {
+      _mesa_set_program_error(parseState->ctx,
+                              parseState->pos - parseState->start,
+                              msg);
+   }
+}
+
+
+#define RETURN_ERROR							\
+do {									\
+   record_error(parseState, "Unexpected end of input.", __LINE__);	\
+   return GL_FALSE;							\
+} while(0)
+
+#define RETURN_ERROR1(msg)						\
+do {									\
+   record_error(parseState, msg, __LINE__);				\
+   return GL_FALSE;							\
+} while(0)
+
+#define RETURN_ERROR2(msg1, msg2)					\
+do {									\
+   char err[1000];							\
+   _mesa_sprintf(err, "%s %s", msg1, msg2);				\
+   record_error(parseState, err, __LINE__);				\
+   return GL_FALSE;							\
+} while(0)
+
+
+
+
+
+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 = _mesa_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", "BFC0", "BFC1", "FOGC", "PSIZ",
+   "TEX0", "TEX1", "TEX2", "TEX3", "TEX4", "TEX5", "TEX6", "TEX7", NULL
+};
+
+/* NOTE: the order here must match opcodes in nvvertprog.h */
+static const char *Opcodes[] = {
+   "MOV", "LIT", "RCP", "RSQ", "EXP", "LOG", "MUL", "ADD", "DP3", "DP4",
+   "DST", "MIN", "MAX", "SLT", "SGE", "MAD", "ARL", "DPH", "RCC", "SUB",
+   "ABS", "END",
+   /* GL_ARB_vertex_program */
+   "FLR", "FRC", "EX2", "LG2", "POW", "XPD", "SWZ",
+   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 = _mesa_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 = _mesa_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 vp_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 = _mesa_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 (_mesa_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;
+      /* 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 = _mesa_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 = _mesa_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 (_mesa_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 (_mesa_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 vp_dst_register *dstReg)
+{
+   GLubyte token[100];
+
+   /* 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, &dstReg->Index))
+         RETURN_ERROR;
+   }
+   else if (!parseState->isStateProgram && token[0] == 'o') {
+      /* an output register */
+      dstReg->File = PROGRAM_OUTPUT;
+      if (!Parse_OutputReg(parseState, &dstReg->Index))
+         RETURN_ERROR;
+   }
+   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, &dstReg->Index))
+         RETURN_ERROR;
+   }
+   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] = GL_FALSE;
+      dstReg->WriteMask[1] = GL_FALSE;
+      dstReg->WriteMask[2] = GL_FALSE;
+      dstReg->WriteMask[3] = GL_FALSE;
+
+      if (token[k] == 'x') {
+         dstReg->WriteMask[0] = GL_TRUE;
+         k++;
+      }
+      if (token[k] == 'y') {
+         dstReg->WriteMask[1] = GL_TRUE;
+         k++;
+      }
+      if (token[k] == 'z') {
+         dstReg->WriteMask[2] = GL_TRUE;
+         k++;
+      }
+      if (token[k] == 'w') {
+         dstReg->WriteMask[3] = GL_TRUE;
+         k++;
+      }
+      if (k == 0) {
+         RETURN_ERROR1("Bad writemask character");
+      }
+      return GL_TRUE;
+   }
+   else {
+      dstReg->WriteMask[0] = GL_TRUE;
+      dstReg->WriteMask[1] = GL_TRUE;
+      dstReg->WriteMask[2] = GL_TRUE;
+      dstReg->WriteMask[3] = GL_TRUE;
+      return GL_TRUE;
+   }
+}
+
+
+static GLboolean
+Parse_SwizzleSrcReg(struct parse_state *parseState, struct vp_src_register *srcReg)
+{
+   GLubyte token[100];
+
+   srcReg->RelAddr = GL_FALSE;
+
+   /* check for '-' */
+   if (!Peek_Token(parseState, token))
+      RETURN_ERROR;
+   if (token[0] == '-') {
+      (void) Parse_String(parseState, "-");
+      srcReg->Negate = GL_TRUE;
+      if (!Peek_Token(parseState, token))
+         RETURN_ERROR;
+   }
+   else {
+      srcReg->Negate = GL_FALSE;
+   }
+
+   /* 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, &srcReg->Index))
+         RETURN_ERROR;
+   }
+   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, &srcReg->Index))
+         RETURN_ERROR;
+   }
+   else {
+      RETURN_ERROR2("Bad source register name", token);
+   }
+
+   /* init swizzle fields */
+   srcReg->Swizzle[0] = 0;
+   srcReg->Swizzle[1] = 1;
+   srcReg->Swizzle[2] = 2;
+   srcReg->Swizzle[3] = 3;
+
+   /* 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')
+            ASSIGN_4V(srcReg->Swizzle, 0, 0, 0, 0);
+         else if (token[0] == 'y')
+            ASSIGN_4V(srcReg->Swizzle, 1, 1, 1, 1);
+         else if (token[0] == 'z')
+            ASSIGN_4V(srcReg->Swizzle, 2, 2, 2, 2);
+         else if (token[0] == 'w')
+            ASSIGN_4V(srcReg->Swizzle, 3, 3, 3, 3);
+         else
+            RETURN_ERROR1("Expected x, y, z, or w");
+      }
+      else {
+         /* 2, 3 or 4-component swizzle */
+         GLint k;
+         for (k = 0; token[k] && k < 5; k++) {
+            if (token[k] == 'x')
+               srcReg->Swizzle[k] = 0;
+            else if (token[k] == 'y')
+               srcReg->Swizzle[k] = 1;
+            else if (token[k] == 'z')
+               srcReg->Swizzle[k] = 2;
+            else if (token[k] == 'w')
+               srcReg->Swizzle[k] = 3;
+            else
+               RETURN_ERROR;
+         }
+         if (k >= 5)
+            RETURN_ERROR;
+      }
+   }
+
+   return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_ScalarSrcReg(struct parse_state *parseState, struct vp_src_register *srcReg)
+{
+   GLubyte token[100];
+
+   srcReg->RelAddr = GL_FALSE;
+
+   /* check for '-' */
+   if (!Peek_Token(parseState, token))
+      RETURN_ERROR;
+   if (token[0] == '-') {
+      srcReg->Negate = GL_TRUE;
+      (void) Parse_String(parseState, "-"); /* consume '-' */
+      if (!Peek_Token(parseState, token))
+         RETURN_ERROR;
+   }
+   else {
+      srcReg->Negate = GL_FALSE;
+   }
+
+   /* 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, &srcReg->Index))
+         RETURN_ERROR;
+   }
+   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, &srcReg->Index))
+         RETURN_ERROR;
+   }
+   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] = 0;
+   }
+   else if (token[0] == 'y' && token[1] == 0) {
+      srcReg->Swizzle[0] = 1;
+   }
+   else if (token[0] == 'z' && token[1] == 0) {
+      srcReg->Swizzle[0] = 2;
+   }
+   else if (token[0] == 'w' && token[1] == 0) {
+      srcReg->Swizzle[0] = 3;
+   }
+   else {
+      RETURN_ERROR1("Bad scalar source suffix");
+   }
+   srcReg->Swizzle[1] = srcReg->Swizzle[2] = srcReg->Swizzle[3] = 0;
+
+   return GL_TRUE;
+}
+
+
+static GLint
+Parse_UnaryOpInstruction(struct parse_state *parseState,
+                         struct vp_instruction *inst, enum vp_opcode opcode)
+{
+   if (opcode == VP_OPCODE_ABS && !parseState->isVersion1_1)
+      RETURN_ERROR1("ABS illegal for vertex program 1.0");
+
+   inst->Opcode = opcode;
+   inst->StringPos = parseState->curLine - parseState->start;
+
+   /* 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 vp_instruction *inst, enum vp_opcode opcode)
+{
+   if (opcode == VP_OPCODE_DPH && !parseState->isVersion1_1)
+      RETURN_ERROR1("DPH illegal for vertex program 1.0");
+   if (opcode == VP_OPCODE_SUB && !parseState->isVersion1_1)
+      RETURN_ERROR1("SUB illegal for vertex program 1.0");
+
+   inst->Opcode = opcode;
+   inst->StringPos = parseState->curLine - parseState->start;
+
+   /* 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 vp_instruction *inst, enum vp_opcode opcode)
+{
+   inst->Opcode = opcode;
+   inst->StringPos = parseState->curLine - parseState->start;
+
+   /* 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 vp_instruction *inst, enum vp_opcode opcode)
+{
+   if (opcode == VP_OPCODE_RCC && !parseState->isVersion1_1)
+      RETURN_ERROR1("RCC illegal for vertex program 1.0");
+
+   inst->Opcode = opcode;
+   inst->StringPos = parseState->curLine - parseState->start;
+
+   /* 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 vp_instruction *inst)
+{
+   inst->Opcode = VP_OPCODE_ARL;
+   inst->StringPos = parseState->curLine - parseState->start;
+
+   /* 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 vp_instruction *inst)
+{
+   GLubyte token[100];
+
+   inst->Opcode = VP_OPCODE_END;
+   inst->StringPos = parseState->curLine - parseState->start;
+
+   /* this should fail! */
+   if (Parse_Token(parseState, token))
+      RETURN_ERROR2("Unexpected token after END:", token);
+   else
+      return GL_TRUE;
+}
+
+
+static GLboolean
+Parse_OptionSequence(struct parse_state *parseState,
+                     struct vp_instruction 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 vp_instruction program[])
+{
+   while (1) {
+      struct vp_instruction *inst = program + parseState->numInst;
+
+      /* Initialize the instruction */
+      inst->SrcReg[0].File = (enum register_file) -1;
+      inst->SrcReg[1].File = (enum register_file) -1;
+      inst->SrcReg[2].File = (enum register_file) -1;
+      inst->DstReg.File = (enum register_file) -1;
+
+      if (Parse_String(parseState, "MOV")) {
+         if (!Parse_UnaryOpInstruction(parseState, inst, VP_OPCODE_MOV))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "LIT")) {
+         if (!Parse_UnaryOpInstruction(parseState, inst, VP_OPCODE_LIT))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "ABS")) {
+         if (!Parse_UnaryOpInstruction(parseState, inst, VP_OPCODE_ABS))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "MUL")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_MUL))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "ADD")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_ADD))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "DP3")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_DP3))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "DP4")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_DP4))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "DST")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_DST))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "MIN")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_MIN))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "MAX")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_MAX))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "SLT")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_SLT))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "SGE")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_SGE))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "DPH")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_DPH))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "SUB")) {
+         if (!Parse_BiOpInstruction(parseState, inst, VP_OPCODE_SUB))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "MAD")) {
+         if (!Parse_TriOpInstruction(parseState, inst, VP_OPCODE_MAD))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "RCP")) {
+         if (!Parse_ScalarInstruction(parseState, inst, VP_OPCODE_RCP))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "RSQ")) {
+         if (!Parse_ScalarInstruction(parseState, inst, VP_OPCODE_RSQ))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "EXP")) {
+         if (!Parse_ScalarInstruction(parseState, inst, VP_OPCODE_EXP))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "LOG")) {
+         if (!Parse_ScalarInstruction(parseState, inst, VP_OPCODE_LOG))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "RCC")) {
+         if (!Parse_ScalarInstruction(parseState, inst, VP_OPCODE_RCC))
+            RETURN_ERROR;
+      }
+      else if (Parse_String(parseState, "ARL")) {
+         if (!Parse_AddressInstruction(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 vp_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 vertex_program *program)
+{
+   struct parse_state parseState;
+   struct vp_instruction instBuffer[MAX_NV_VERTEX_PROGRAM_INSTRUCTIONS];
+   struct vp_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;
+
+   /* Reset error state */
+   _mesa_set_program_error(ctx, -1, NULL);
+
+   /* check the program header */
+   if (_mesa_strncmp((const char *) programString, "!!VP1.0", 7) == 0) {
+      target = GL_VERTEX_PROGRAM_NV;
+      parseState.pos = programString + 7;
+      parseState.isStateProgram = GL_FALSE;
+   }
+   else if (_mesa_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 (_mesa_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)) {
+      /* 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)) {
+            /* 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 = (struct vp_instruction *)
+         MALLOC(parseState.numInst * sizeof(struct vp_instruction));
+      if (!newInst) {
+         _mesa_error(ctx, GL_OUT_OF_MEMORY, "glLoadProgramNV");
+         FREE(programString);
+         return;  /* out of memory */
+      }
+      MEMCPY(newInst, instBuffer,
+             parseState.numInst * sizeof(struct vp_instruction));
+
+      /* 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->Instructions) {
+         FREE(program->Instructions);
+      }
+      program->Instructions = newInst;
+      program->InputsRead = parseState.inputsRead;
+      program->OutputsWritten = parseState.outputsWritten;
+      program->IsPositionInvariant = parseState.isPositionInvariant;
+
+#ifdef DEBUG
+      _mesa_printf("--- glLoadProgramNV result ---\n");
+      _mesa_print_nv_vertex_program(program);
+      _mesa_printf("------------------------------\n");
+#endif
+   }
+   else {
+      /* Error! */
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glLoadProgramNV");
+      /* NOTE: _mesa_set_program_error would have been called already */
+      /* 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);
+   }
+}
+
+
+static void
+PrintSrcReg(const struct vp_src_register *src)
+{
+   static const char comps[5] = "xyzw";
+   if (src->Negate)
+      _mesa_printf("-");
+   if (src->RelAddr) {
+      if (src->Index > 0)
+         _mesa_printf("c[A0.x + %d]", src->Index);
+      else if (src->Index < 0)
+         _mesa_printf("c[A0.x - %d]", -src->Index);
+      else
+         _mesa_printf("c[A0.x]");
+   }
+   else if (src->File == PROGRAM_OUTPUT) {
+      _mesa_printf("o[%s]", OutputRegisters[src->Index]);
+   }
+   else if (src->File == PROGRAM_INPUT) {
+      _mesa_printf("v[%s]", InputRegisters[src->Index]);
+   }
+   else if (src->File == PROGRAM_ENV_PARAM) {
+      _mesa_printf("c[%d]", src->Index);
+   }
+   else {
+      ASSERT(src->File == PROGRAM_TEMPORARY);
+      _mesa_printf("R%d", src->Index);
+   }
+
+   if (src->Swizzle[0] == src->Swizzle[1] &&
+       src->Swizzle[0] == src->Swizzle[2] &&
+       src->Swizzle[0] == src->Swizzle[3]) {
+      _mesa_printf(".%c", comps[src->Swizzle[0]]);
+   }
+   else if (src->Swizzle[0] != 0 ||
+            src->Swizzle[1] != 1 ||
+            src->Swizzle[2] != 2 ||
+            src->Swizzle[3] != 3) {
+      _mesa_printf(".%c%c%c%c",
+             comps[src->Swizzle[0]],
+             comps[src->Swizzle[1]],
+             comps[src->Swizzle[2]],
+             comps[src->Swizzle[3]]);
+   }
+}
+
+
+static void
+PrintDstReg(const struct vp_dst_register *dst)
+{
+   GLint w = dst->WriteMask[0] + dst->WriteMask[1]
+           + dst->WriteMask[2] + dst->WriteMask[3];
+
+   if (dst->File == PROGRAM_OUTPUT) {
+      _mesa_printf("o[%s]", OutputRegisters[dst->Index]);
+   }
+   else if (dst->File == PROGRAM_INPUT) {
+      _mesa_printf("v[%s]", InputRegisters[dst->Index]);
+   }
+   else if (dst->File == PROGRAM_ENV_PARAM) {
+      _mesa_printf("c[%d]", dst->Index);
+   }
+   else {
+      ASSERT(dst->File == PROGRAM_TEMPORARY);
+      _mesa_printf("R%d", dst->Index);
+   }
+
+   if (w != 0 && w != 4) {
+      _mesa_printf(".");
+      if (dst->WriteMask[0])
+         _mesa_printf("x");
+      if (dst->WriteMask[1])
+         _mesa_printf("y");
+      if (dst->WriteMask[2])
+         _mesa_printf("z");
+      if (dst->WriteMask[3])
+         _mesa_printf("w");
+   }
+}
+
+
+/**
+ * Print a single NVIDIA vertex program instruction.
+ */
+void
+_mesa_print_nv_vertex_instruction(const struct vp_instruction *inst)
+{
+   switch (inst->Opcode) {
+      case VP_OPCODE_MOV:
+      case VP_OPCODE_LIT:
+      case VP_OPCODE_RCP:
+      case VP_OPCODE_RSQ:
+      case VP_OPCODE_EXP:
+      case VP_OPCODE_LOG:
+      case VP_OPCODE_RCC:
+      case VP_OPCODE_ABS:
+         _mesa_printf("%s ", Opcodes[(int) inst->Opcode]);
+         PrintDstReg(&inst->DstReg);
+         _mesa_printf(", ");
+         PrintSrcReg(&inst->SrcReg[0]);
+         _mesa_printf(";\n");
+         break;
+      case VP_OPCODE_MUL:
+      case VP_OPCODE_ADD:
+      case VP_OPCODE_DP3:
+      case VP_OPCODE_DP4:
+      case VP_OPCODE_DST:
+      case VP_OPCODE_MIN:
+      case VP_OPCODE_MAX:
+      case VP_OPCODE_SLT:
+      case VP_OPCODE_SGE:
+      case VP_OPCODE_DPH:
+      case VP_OPCODE_SUB:
+         _mesa_printf("%s ", Opcodes[(int) inst->Opcode]);
+         PrintDstReg(&inst->DstReg);
+         _mesa_printf(", ");
+         PrintSrcReg(&inst->SrcReg[0]);
+         _mesa_printf(", ");
+         PrintSrcReg(&inst->SrcReg[1]);
+         _mesa_printf(";\n");
+         break;
+      case VP_OPCODE_MAD:
+         _mesa_printf("MAD ");
+         PrintDstReg(&inst->DstReg);
+         _mesa_printf(", ");
+         PrintSrcReg(&inst->SrcReg[0]);
+         _mesa_printf(", ");
+         PrintSrcReg(&inst->SrcReg[1]);
+         _mesa_printf(", ");
+         PrintSrcReg(&inst->SrcReg[2]);
+         _mesa_printf(";\n");
+         break;
+      case VP_OPCODE_ARL:
+         _mesa_printf("ARL A0.x, ");
+         PrintSrcReg(&inst->SrcReg[0]);
+         _mesa_printf(";\n");
+         break;
+      case VP_OPCODE_END:
+         _mesa_printf("END\n");
+         break;
+      default:
+         _mesa_printf("BAD INSTRUCTION\n");
+   }
+}
+
+
+/**
+ * Print (unparse) the given vertex program.  Just for debugging.
+ */
+void
+_mesa_print_nv_vertex_program(const struct vertex_program *program)
+{
+   const struct vp_instruction *inst;
+
+   for (inst = program->Instructions; ; inst++) {
+      _mesa_print_nv_vertex_instruction(inst);
+      if (inst->Opcode == VP_OPCODE_END)
+         return;
+   }
+}
+
+
+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];
+}