nx-X11/extras/Mesa: Drop bundled Mesa, place a symlink to imported Git subtree of Mesa_6.4.1 instead.

1 files changed, 0 insertions, 1103 deletions

diff --git a/nx-X11/extras/Mesa/src/mesa/main/imports.c b/nx-X11/extras/Mesa/src/mesa/main/imports.c
deleted file mode 100644
index 1fdfe064a..000000000
--- a/nx-X11/extras/Mesa/src/mesa/main/imports.c
+++ /dev/null
@@ -1,1103 +0,0 @@
-/**
- * \file imports.c
- * Standard C library function wrappers.
- * 
- * Imports are services which the device driver or window system or
- * operating system provides to the core renderer.  The core renderer (Mesa)
- * will call these functions in order to do memory allocation, simple I/O,
- * etc.
- *
- * Some drivers will want to override/replace this file with something
- * specialized, but that'll be rare.
- *
- * Eventually, I want to move roll the glheader.h file into this.
- *
- * The OpenGL SI's __GLimports structure allows per-context specification of
- * replacements for the standard C lib functions.  In practice that's probably
- * never needed; compile-time replacements are far more likely.
- *
- * The _mesa_*() functions defined here don't in general take a context
- * parameter.  I guess we can change that someday, if need be.
- * So for now, the __GLimports stuff really isn't used.
- *
- * \todo Functions still needed:
- * - scanf
- * - qsort
- * - bsearch
- * - rand and RAND_MAX
- *
- * \note When compiled into a XFree86 module these functions wrap around
- * XFree86 own wrappers.
- */
-
-/*
- * Mesa 3-D graphics library
- * Version:  6.4.1
- *
- * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-
-#include "imports.h"
-#include "context.h"
-#include "version.h"
-
-
-#define MAXSTRING 4000  /* for vsnprintf() */
-
-#ifdef WIN32
-#define vsnprintf _vsnprintf
-#elif defined(__IBMC__) || defined(__IBMCPP__) || ( defined(__VMS) && __CRTL_VER < 70312000 )
-extern int vsnprintf(char *str, size_t count, const char *fmt, va_list arg);
-#ifdef __VMS
-#include "vsnprintf.c"
-#endif
-#endif
-
-
-/**********************************************************************/
-/** \name Memory */
-/*@{*/
-
-/** Wrapper around either malloc() or xf86malloc() */
-void *
-_mesa_malloc(size_t bytes)
-{
-   return malloc(bytes);
-}
-
-/** Wrapper around either calloc() or xf86calloc() */
-void *
-_mesa_calloc(size_t bytes)
-{
-   return calloc(1, bytes);
-}
-
-/** Wrapper around either free() or xf86free() */
-void
-_mesa_free(void *ptr)
-{
-   free(ptr);
-}
-
-/**
- * Allocate aligned memory.
- *
- * \param bytes number of bytes to allocate.
- * \param alignment alignment (must be greater than zero).
- * 
- * Allocates extra memory to accommodate rounding up the address for
- * alignment and to record the real malloc address.
- *
- * \sa _mesa_align_free().
- */
-void *
-_mesa_align_malloc(size_t bytes, unsigned long alignment)
-{
-   uintptr_t ptr, buf;
-
-   ASSERT( alignment > 0 );
-
-   ptr = (uintptr_t) _mesa_malloc(bytes + alignment + sizeof(void *));
-   if (!ptr)
-      return NULL;
-
-   buf = (ptr + alignment + sizeof(void *)) & ~(uintptr_t)(alignment - 1);
-   *(uintptr_t *)(buf - sizeof(void *)) = ptr;
-
-#ifdef DEBUG
-   /* mark the non-aligned area */
-   while ( ptr < buf - sizeof(void *) ) {
-      *(unsigned long *)ptr = 0xcdcdcdcd;
-      ptr += sizeof(unsigned long);
-   }
-#endif
-
-   return (void *) buf;
-}
-
-/**
- * Same as _mesa_align_malloc(), but using _mesa_calloc() instead of
- * _mesa_malloc()
- */
-void *
-_mesa_align_calloc(size_t bytes, unsigned long alignment)
-{
-   uintptr_t ptr, buf;
-
-   ASSERT( alignment > 0 );
-
-   ptr = (uintptr_t) _mesa_calloc(bytes + alignment + sizeof(void *));
-   if (!ptr)
-      return NULL;
-
-   buf = (ptr + alignment + sizeof(void *)) & ~(uintptr_t)(alignment - 1);
-   *(uintptr_t *)(buf - sizeof(void *)) = ptr;
-
-#ifdef DEBUG
-   /* mark the non-aligned area */
-   while ( ptr < buf - sizeof(void *) ) {
-      *(unsigned long *)ptr = 0xcdcdcdcd;
-      ptr += sizeof(unsigned long);
-   }
-#endif
-
-   return (void *)buf;
-}
-
-/**
- * Free memory which was allocated with either _mesa_align_malloc()
- * or _mesa_align_calloc().
- * \param ptr pointer to the memory to be freed.
- * The actual address to free is stored in the word immediately before the
- * address the client sees.
- */
-void
-_mesa_align_free(void *ptr)
-{
-#if 0
-   _mesa_free( (void *)(*(unsigned long *)((unsigned long)ptr - sizeof(void *))) );
-#else
-   void **cubbyHole = (void **) ((char *) ptr - sizeof(void *));
-   void *realAddr = *cubbyHole;
-   _mesa_free(realAddr);
-#endif
-}
-
-/** Reallocate memory */
-void *
-_mesa_realloc(void *oldBuffer, size_t oldSize, size_t newSize)
-{
-   const size_t copySize = (oldSize < newSize) ? oldSize : newSize;
-   void *newBuffer = _mesa_malloc(newSize);
-   if (newBuffer && oldBuffer && copySize > 0)
-      _mesa_memcpy(newBuffer, oldBuffer, copySize);
-   if (oldBuffer)
-      _mesa_free(oldBuffer);
-   return newBuffer;
-}
-
-/** memcpy wrapper */
-void *
-_mesa_memcpy(void *dest, const void *src, size_t n)
-{
-#if defined(SUNOS4)
-   return memcpy((char *) dest, (char *) src, (int) n);
-#else
-   return memcpy(dest, src, n);
-#endif
-}
-
-/** Wrapper around either memset() or xf86memset() */
-void
-_mesa_memset( void *dst, int val, size_t n )
-{
-#if defined(SUNOS4)
-   memset( (char *) dst, (int) val, (int) n );
-#else
-   memset(dst, val, n);
-#endif
-}
-
-/**
- * Fill memory with a constant 16bit word.
- * \param dst destination pointer.
- * \param val value.
- * \param n number of words.
- */
-void
-_mesa_memset16( unsigned short *dst, unsigned short val, size_t n )
-{
-   while (n-- > 0)
-      *dst++ = val;
-}
-
-/** Wrapper around either memcpy() or xf86memcpy() or bzero() */
-void
-_mesa_bzero( void *dst, size_t n )
-{
-#if defined(__FreeBSD__)
-   bzero( dst, n );
-#else
-   memset( dst, 0, n );
-#endif
-}
-
-/*@}*/
-
-
-/**********************************************************************/
-/** \name Math */
-/*@{*/
-
-/** Wrapper around either sin() or xf86sin() */
-double
-_mesa_sin(double a)
-{
-   return sin(a);
-}
-
-/** Wrapper around either cos() or xf86cos() */
-double
-_mesa_cos(double a)
-{
-   return cos(a);
-}
-
-/** Wrapper around either sqrt() or xf86sqrt() */
-double
-_mesa_sqrtd(double x)
-{
-   return sqrt(x);
-}
-
-
-/*
- * A High Speed, Low Precision Square Root
- * by Paul Lalonde and Robert Dawson
- * from "Graphics Gems", Academic Press, 1990
- *
- * SPARC implementation of a fast square root by table
- * lookup.
- * SPARC floating point format is as follows:
- *
- * BIT 31 	30 	23 	22 	0
- *     sign	exponent	mantissa
- */
-static short sqrttab[0x100];    /* declare table of square roots */
-
-static void init_sqrt_table(void)
-{
-#if defined(USE_IEEE) && !defined(DEBUG)
-   unsigned short i;
-   fi_type fi;     /* to access the bits of a float in  C quickly  */
-                   /* we use a union defined in glheader.h         */
-
-   for(i=0; i<= 0x7f; i++) {
-      fi.i = 0;
-
-      /*
-       * Build a float with the bit pattern i as mantissa
-       * and an exponent of 0, stored as 127
-       */
-
-      fi.i = (i << 16) | (127 << 23);
-      fi.f = _mesa_sqrtd(fi.f);
-
-      /*
-       * Take the square root then strip the first 7 bits of
-       * the mantissa into the table
-       */
-
-      sqrttab[i] = (fi.i & 0x7fffff) >> 16;
-
-      /*
-       * Repeat the process, this time with an exponent of
-       * 1, stored as 128
-       */
-
-      fi.i = 0;
-      fi.i = (i << 16) | (128 << 23);
-      fi.f = sqrt(fi.f);
-      sqrttab[i+0x80] = (fi.i & 0x7fffff) >> 16;
-   }
-#else
-   (void) sqrttab;  /* silence compiler warnings */
-#endif /*HAVE_FAST_MATH*/
-}
-
-
-/**
- * Single precision square root.
- */
-float
-_mesa_sqrtf( float x )
-{
-#if defined(USE_IEEE) && !defined(DEBUG)
-   fi_type num;
-                                /* to access the bits of a float in C
-                                 * we use a union from glheader.h     */
-
-   short e;                     /* the exponent */
-   if (x == 0.0F) return 0.0F;  /* check for square root of 0 */
-   num.f = x;
-   e = (num.i >> 23) - 127;     /* get the exponent - on a SPARC the */
-                                /* exponent is stored with 127 added */
-   num.i &= 0x7fffff;           /* leave only the mantissa */
-   if (e & 0x01) num.i |= 0x800000;
-                                /* the exponent is odd so we have to */
-                                /* look it up in the second half of  */
-                                /* the lookup table, so we set the   */
-                                /* high bit                                */
-   e >>= 1;                     /* divide the exponent by two */
-                                /* note that in C the shift */
-                                /* operators are sign preserving */
-                                /* for signed operands */
-   /* Do the table lookup, based on the quaternary mantissa,
-    * then reconstruct the result back into a float
-    */
-   num.i = ((sqrttab[num.i >> 16]) << 16) | ((e + 127) << 23);
-
-   return num.f;
-#else
-   return (float) _mesa_sqrtd((double) x);
-#endif
-}
-
-
-/**
- inv_sqrt - A single precision 1/sqrt routine for IEEE format floats.
- written by Josh Vanderhoof, based on newsgroup posts by James Van Buskirk
- and Vesa Karvonen.
-*/
-float
-_mesa_inv_sqrtf(float n)
-{
-#if defined(USE_IEEE) && !defined(DEBUG)
-        float r0, x0, y0;
-        float r1, x1, y1;
-        float r2, x2, y2;
-#if 0 /* not used, see below -BP */
-        float r3, x3, y3;
-#endif
-        union { float f; unsigned int i; } u;
-        unsigned int magic;
-
-        /*
-         Exponent part of the magic number -
-
-         We want to:
-         1. subtract the bias from the exponent,
-         2. negate it
-         3. divide by two (rounding towards -inf)
-         4. add the bias back
-
-         Which is the same as subtracting the exponent from 381 and dividing
-         by 2.
-
-         floor(-(x - 127) / 2) + 127 = floor((381 - x) / 2)
-        */
-
-        magic = 381 << 23;
-
-        /*
-         Significand part of magic number -
-
-         With the current magic number, "(magic - u.i) >> 1" will give you:
-
-         for 1 <= u.f <= 2: 1.25 - u.f / 4
-         for 2 <= u.f <= 4: 1.00 - u.f / 8
-
-         This isn't a bad approximation of 1/sqrt.  The maximum difference from
-         1/sqrt will be around .06.  After three Newton-Raphson iterations, the
-         maximum difference is less than 4.5e-8.  (Which is actually close
-         enough to make the following bias academic...)
-
-         To get a better approximation you can add a bias to the magic
-         number.  For example, if you subtract 1/2 of the maximum difference in
-         the first approximation (.03), you will get the following function:
-
-         for 1 <= u.f <= 2:    1.22 - u.f / 4
-         for 2 <= u.f <= 3.76: 0.97 - u.f / 8
-         for 3.76 <= u.f <= 4: 0.72 - u.f / 16
-         (The 3.76 to 4 range is where the result is < .5.)
-
-         This is the closest possible initial approximation, but with a maximum
-         error of 8e-11 after three NR iterations, it is still not perfect.  If
-         you subtract 0.0332281 instead of .03, the maximum error will be
-         2.5e-11 after three NR iterations, which should be about as close as
-         is possible.
-
-         for 1 <= u.f <= 2:    1.2167719 - u.f / 4
-         for 2 <= u.f <= 3.73: 0.9667719 - u.f / 8
-         for 3.73 <= u.f <= 4: 0.7167719 - u.f / 16
-
-        */
-
-        magic -= (int)(0.0332281 * (1 << 25));
-
-        u.f = n;
-        u.i = (magic - u.i) >> 1;
-
-        /*
-         Instead of Newton-Raphson, we use Goldschmidt's algorithm, which
-         allows more parallelism.  From what I understand, the parallelism
-         comes at the cost of less precision, because it lets error
-         accumulate across iterations.
-        */
-        x0 = 1.0f;
-        y0 = 0.5f * n;
-        r0 = u.f;
-
-        x1 = x0 * r0;
-        y1 = y0 * r0 * r0;
-        r1 = 1.5f - y1;
-
-        x2 = x1 * r1;
-        y2 = y1 * r1 * r1;
-        r2 = 1.5f - y2;
-
-#if 1
-        return x2 * r2;  /* we can stop here, and be conformant -BP */
-#else
-        x3 = x2 * r2;
-        y3 = y2 * r2 * r2;
-        r3 = 1.5f - y3;
-
-        return x3 * r3;
-#endif
-        return (float) (1.0 / sqrt(n));
-#endif
-}
-
-
-/**
- * Wrapper around either pow() or xf86pow().
- */
-double
-_mesa_pow(double x, double y)
-{
-   return pow(x, y);
-}
-
-
-/**
- * Return number of bits set in given GLuint.
- */
-unsigned int
-_mesa_bitcount(unsigned int n)
-{
-   unsigned int bits;
-   for (bits = 0; n > 0; n = n >> 1) {
-      bits += (n & 1);
-   }
-   return bits;
-}
-
-
-/**
- * Convert a 4-byte float to a 2-byte half float.
- * Based on code from:
- * http://www.opengl.org/discussion_boards/ubb/Forum3/HTML/008786.html
- */
-GLhalfARB
-_mesa_float_to_half(float val)
-{
-   const int flt = *((int *) (void *) &val);
-   const int flt_m = flt & 0x7fffff;
-   const int flt_e = (flt >> 23) & 0xff;
-   const int flt_s = (flt >> 31) & 0x1;
-   int s, e, m = 0;
-   GLhalfARB result;
-   
-   /* sign bit */
-   s = flt_s;
-
-   /* handle special cases */
-   if ((flt_e == 0) && (flt_m == 0)) {
-      /* zero */
-      /* m = 0; - already set */
-      e = 0;
-   }
-   else if ((flt_e == 0) && (flt_m != 0)) {
-      /* denorm -- denorm float maps to 0 half */
-      /* m = 0; - already set */
-      e = 0;
-   }
-   else if ((flt_e == 0xff) && (flt_m == 0)) {
-      /* infinity */
-      /* m = 0; - already set */
-      e = 31;
-   }
-   else if ((flt_e == 0xff) && (flt_m != 0)) {
-      /* NaN */
-      m = 1;
-      e = 31;
-   }
-   else {
-      /* regular number */
-      const int new_exp = flt_e - 127;
-      if (new_exp < -24) {
-         /* this maps to 0 */
-         /* m = 0; - already set */
-         e = 0;
-      }
-      else if (new_exp < -14) {
-         /* this maps to a denorm */
-         unsigned int exp_val = (unsigned int) (-14 - new_exp); /* 2^-exp_val*/
-         e = 0;
-         switch (exp_val) {
-            case 0:
-               _mesa_warning(NULL,
-                   "float_to_half: logical error in denorm creation!\n");
-               /* m = 0; - already set */
-               break;
-            case 1: m = 512 + (flt_m >> 14); break;
-            case 2: m = 256 + (flt_m >> 15); break;
-            case 3: m = 128 + (flt_m >> 16); break;
-            case 4: m = 64 + (flt_m >> 17); break;
-            case 5: m = 32 + (flt_m >> 18); break;
-            case 6: m = 16 + (flt_m >> 19); break;
-            case 7: m = 8 + (flt_m >> 20); break;
-            case 8: m = 4 + (flt_m >> 21); break;
-            case 9: m = 2 + (flt_m >> 22); break;
-            case 10: m = 1; break;
-         }
-      }
-      else if (new_exp > 15) {
-         /* map this value to infinity */
-         /* m = 0; - already set */
-         e = 31;
-      }
-      else {
-         /* regular */
-         e = new_exp + 15;
-         m = flt_m >> 13;
-      }
-   }
-
-   result = (s << 15) | (e << 10) | m;
-   return result;
-}
-
-
-/**
- * Convert a 2-byte half float to a 4-byte float.
- * Based on code from:
- * http://www.opengl.org/discussion_boards/ubb/Forum3/HTML/008786.html
- */
-float
-_mesa_half_to_float(GLhalfARB val)
-{
-   /* XXX could also use a 64K-entry lookup table */
-   const int m = val & 0x3ff;
-   const int e = (val >> 10) & 0x1f;
-   const int s = (val >> 15) & 0x1;
-   int flt_m, flt_e, flt_s, flt;
-   float result;
-
-   /* sign bit */
-   flt_s = s;
-
-   /* handle special cases */
-   if ((e == 0) && (m == 0)) {
-      /* zero */
-      flt_m = 0;
-      flt_e = 0;
-   }
-   else if ((e == 0) && (m != 0)) {
-      /* denorm -- denorm half will fit in non-denorm single */
-      const float half_denorm = 1.0f / 16384.0f; /* 2^-14 */
-      float mantissa = ((float) (m)) / 1024.0f;
-      float sign = s ? -1.0f : 1.0f;
-      return sign * mantissa * half_denorm;
-   }
-   else if ((e == 31) && (m == 0)) {
-      /* infinity */
-      flt_e = 0xff;
-      flt_m = 0;
-   }
-   else if ((e == 31) && (m != 0)) {
-      /* NaN */
-      flt_e = 0xff;
-      flt_m = 1;
-   }
-   else {
-      /* regular */
-      flt_e = e + 112;
-      flt_m = m << 13;
-   }
-
-   flt = (flt_s << 31) | (flt_e << 23) | flt_m;
-   result = *((float *) (void *) &flt);
-   return result;
-}
-
-/*@}*/
-
-
-/**********************************************************************/
-/** \name Environment vars */
-/*@{*/
-
-/**
- * Wrapper for getenv().
- */
-char *
-_mesa_getenv( const char *var )
-{
-#if defined(_XBOX)
-   return NULL;
-#else
-   return getenv(var);
-#endif
-}
-
-/*@}*/
-
-
-/**********************************************************************/
-/** \name String */
-/*@{*/
-
-/** Wrapper around either strstr() or xf86strstr() */
-char *
-_mesa_strstr( const char *haystack, const char *needle )
-{
-   return strstr(haystack, needle);
-}
-
-/** Wrapper around either strncat() or xf86strncat() */
-char *
-_mesa_strncat( char *dest, const char *src, size_t n )
-{
-   return strncat(dest, src, n);
-}
-
-/** Wrapper around either strcpy() or xf86strcpy() */
-char *
-_mesa_strcpy( char *dest, const char *src )
-{
-   return strcpy(dest, src);
-}
-
-/** Wrapper around either strncpy() or xf86strncpy() */
-char *
-_mesa_strncpy( char *dest, const char *src, size_t n )
-{
-   return strncpy(dest, src, n);
-}
-
-/** Wrapper around either strlen() or xf86strlen() */
-size_t
-_mesa_strlen( const char *s )
-{
-   return strlen(s);
-}
-
-/** Wrapper around either strcmp() or xf86strcmp() */
-int
-_mesa_strcmp( const char *s1, const char *s2 )
-{
-   return strcmp(s1, s2);
-}
-
-/** Wrapper around either strncmp() or xf86strncmp() */
-int
-_mesa_strncmp( const char *s1, const char *s2, size_t n )
-{
-   return strncmp(s1, s2, n);
-}
-
-/** Implemented using _mesa_malloc() and _mesa_strcpy */
-char *
-_mesa_strdup( const char *s )
-{
-   size_t l = _mesa_strlen(s);
-   char *s2 = (char *) _mesa_malloc(l + 1);
-   if (s2)
-      _mesa_strcpy(s2, s);
-   return s2;
-}
-
-/** Wrapper around either atoi() or xf86atoi() */
-int
-_mesa_atoi(const char *s)
-{
-   return atoi(s);
-}
-
-/** Wrapper around either strtod() or xf86strtod() */
-double
-_mesa_strtod( const char *s, char **end )
-{
-   return strtod(s, end);
-}
-
-/*@}*/
-
-
-/**********************************************************************/
-/** \name I/O */
-/*@{*/
-
-/** Wrapper around either vsprintf() or xf86vsprintf() */
-int
-_mesa_sprintf( char *str, const char *fmt, ... )
-{
-   int r;
-   va_list args;
-   va_start( args, fmt );  
-   va_end( args );
-   r = vsprintf( str, fmt, args );
-   return r;
-}
-
-/** Wrapper around either printf() or xf86printf(), using vsprintf() for
- * the formatting. */
-void
-_mesa_printf( const char *fmtString, ... )
-{
-   char s[MAXSTRING];
-   va_list args;
-   va_start( args, fmtString );  
-   vsnprintf(s, MAXSTRING, fmtString, args);
-   va_end( args );
-   fprintf(stderr,"%s", s);
-}
-
-/*@}*/
-
-
-/**********************************************************************/
-/** \name Diagnostics */
-/*@{*/
-
-/**
- * Display a warning.
- *
- * \param ctx GL context.
- * \param fmtString printf() alike format string.
- * 
- * If debugging is enabled (either at compile-time via the DEBUG macro, or
- * run-time via the MESA_DEBUG environment variable), prints the warning to
- * stderr, either via fprintf() or xf86printf().
- */
-void
-_mesa_warning( GLcontext *ctx, const char *fmtString, ... )
-{
-   GLboolean debug;
-   char str[MAXSTRING];
-   va_list args;
-   (void) ctx;
-   va_start( args, fmtString );  
-   (void) vsnprintf( str, MAXSTRING, fmtString, args );
-   va_end( args );
-#ifdef DEBUG
-   debug = GL_TRUE; /* always print warning */
-#else
-   debug = _mesa_getenv("MESA_DEBUG") ? GL_TRUE : GL_FALSE;
-#endif
-   if (debug) {
-      fprintf(stderr, "Mesa warning: %s", str);
-   }
-}
-
-/**
- * This function is called when the Mesa user has stumbled into a code
- * path which may not be implemented fully or correctly.
- *
- * \param ctx GL context.
- * \param s problem description string.
- *
- * Prints the message to stderr, either via fprintf() or xf86fprintf().
- */
-void
-_mesa_problem( const GLcontext *ctx, const char *fmtString, ... )
-{
-   va_list args;
-   char str[MAXSTRING];
-   (void) ctx;
-
-   va_start( args, fmtString );  
-   vsnprintf( str, MAXSTRING, fmtString, args );
-   va_end( args );
-
-   fprintf(stderr, "Mesa %s implementation error: %s\n", MESA_VERSION_STRING, str);
-   fprintf(stderr, "Please report at bugzilla.freedesktop.org\n");
-}
-
-/**
- * Display an error message.
- *
- * If in debug mode, print error message.
- * Also, record the error code by calling _mesa_record_error().
- * 
- * \param ctx the GL context.
- * \param error the error value.
- * \param fmtString printf() style format string, followed by optional args
- *         
- * If debugging is enabled (either at compile-time via the DEBUG macro, or
- * run-time via the MESA_DEBUG environment variable), interperts the error code and 
- * prints the error message via _mesa_debug().
- */
-void
-_mesa_error( GLcontext *ctx, GLenum error, const char *fmtString, ... )
-{
-   const char *debugEnv;
-   GLboolean debug;
-
-   debugEnv = _mesa_getenv("MESA_DEBUG");
-
-#ifdef DEBUG
-   if (debugEnv && _mesa_strstr(debugEnv, "silent"))
-      debug = GL_FALSE;
-   else
-      debug = GL_TRUE;
-#else
-   if (debugEnv)
-      debug = GL_TRUE;
-   else
-      debug = GL_FALSE;
-#endif
-
-   if (debug) {
-      va_list args;
-      char where[MAXSTRING];
-      const char *errstr;
-
-      va_start( args, fmtString );  
-      vsnprintf( where, MAXSTRING, fmtString, args );
-      va_end( args );
-
-      switch (error) {
-	 case GL_NO_ERROR:
-	    errstr = "GL_NO_ERROR";
-	    break;
-	 case GL_INVALID_VALUE:
-	    errstr = "GL_INVALID_VALUE";
-	    break;
-	 case GL_INVALID_ENUM:
-	    errstr = "GL_INVALID_ENUM";
-	    break;
-	 case GL_INVALID_OPERATION:
-	    errstr = "GL_INVALID_OPERATION";
-	    break;
-	 case GL_STACK_OVERFLOW:
-	    errstr = "GL_STACK_OVERFLOW";
-	    break;
-	 case GL_STACK_UNDERFLOW:
-	    errstr = "GL_STACK_UNDERFLOW";
-	    break;
-	 case GL_OUT_OF_MEMORY:
-	    errstr = "GL_OUT_OF_MEMORY";
-	    break;
-         case GL_TABLE_TOO_LARGE:
-            errstr = "GL_TABLE_TOO_LARGE";
-            break;
-         case GL_INVALID_FRAMEBUFFER_OPERATION_EXT:
-            errstr = "GL_INVALID_FRAMEBUFFER_OPERATION";
-            break;
-	 default:
-	    errstr = "unknown";
-	    break;
-      }
-      _mesa_debug(ctx, "User error: %s in %s\n", errstr, where);
-   }
-
-   _mesa_record_error(ctx, error);
-}  
-
-/**
- * Report debug information.
- * 
- * \param ctx GL context.
- * \param fmtString printf() alike format string.
- * 
- * Prints the message to stderr, either via fprintf() or xf86printf().
- */
-void
-_mesa_debug( const GLcontext *ctx, const char *fmtString, ... )
-{
-   char s[MAXSTRING];
-   va_list args;
-   (void) ctx;
-   va_start(args, fmtString);
-   vsnprintf(s, MAXSTRING, fmtString, args);
-   va_end(args);
-   fprintf(stderr, "Mesa: %s", s);
-}
-
-/*@}*/
-
-
-/**********************************************************************/
-/** \name Default Imports Wrapper */
-/*@{*/
-
-/** Wrapper around _mesa_malloc() */
-static void *
-default_malloc(__GLcontext *gc, size_t size)
-{
-   (void) gc;
-   return _mesa_malloc(size);
-}
-
-/** Wrapper around _mesa_malloc() */
-static void *
-default_calloc(__GLcontext *gc, size_t numElem, size_t elemSize)
-{
-   (void) gc;
-   return _mesa_calloc(numElem * elemSize);
-}
-
-/** Wrapper around either realloc() or xf86realloc() */
-static void *
-default_realloc(__GLcontext *gc, void *oldAddr, size_t newSize)
-{
-   (void) gc;
-   return realloc(oldAddr, newSize);
-}
-
-/** Wrapper around _mesa_free() */
-static void
-default_free(__GLcontext *gc, void *addr)
-{
-   (void) gc;
-   _mesa_free(addr);
-}
-
-/** Wrapper around _mesa_getenv() */
-static char * CAPI
-default_getenv( __GLcontext *gc, const char *var )
-{
-   (void) gc;
-   return _mesa_getenv(var);
-}
-
-/** Wrapper around _mesa_warning() */
-static void
-default_warning(__GLcontext *gc, char *str)
-{
-   _mesa_warning(gc, str);
-}
-
-/** Wrapper around _mesa_problem() */
-static void
-default_fatal(__GLcontext *gc, char *str)
-{
-   _mesa_problem(gc, str);
-   abort();
-}
-
-/** Wrapper around atoi() */
-static int CAPI
-default_atoi(__GLcontext *gc, const char *str)
-{
-   (void) gc;
-   return atoi(str);
-}
-
-/** Wrapper around vsprintf() */
-static int CAPI
-default_sprintf(__GLcontext *gc, char *str, const char *fmt, ...)
-{
-   int r;
-   va_list args;
-   (void) gc;
-   va_start( args, fmt );  
-   r = vsprintf( str, fmt, args );
-   va_end( args );
-   return r;
-}
-
-/** Wrapper around fopen() */
-static void * CAPI
-default_fopen(__GLcontext *gc, const char *path, const char *mode)
-{
-   (void) gc;
-   return fopen(path, mode);
-}
-
-/** Wrapper around fclose() */
-static int CAPI
-default_fclose(__GLcontext *gc, void *stream)
-{
-   (void) gc;
-   return fclose((FILE *) stream);
-}
-
-/** Wrapper around vfprintf() */
-static int CAPI
-default_fprintf(__GLcontext *gc, void *stream, const char *fmt, ...)
-{
-   int r;
-   va_list args;
-   (void) gc;
-   va_start( args, fmt );  
-   r = vfprintf( (FILE *) stream, fmt, args );
-   va_end( args );
-   return r;
-}
-
-/**
- * \todo this really is driver-specific and can't be here 
- */
-static __GLdrawablePrivate *
-default_GetDrawablePrivate(__GLcontext *gc)
-{
-   (void) gc;
-   return NULL;
-}
-
-/*@}*/
-
-
-/**
- * Initialize a __GLimports object to point to the functions in this
- * file.  
- *
- * This is to be called from device drivers.
- * 
- * Also, do some one-time initializations.
- * 
- * \param imports the object to initialize.
- * \param driverCtx pointer to device driver-specific data.
- */
-void
-_mesa_init_default_imports(__GLimports *imports, void *driverCtx)
-{
-   /* XXX maybe move this one-time init stuff into context.c */
-   static GLboolean initialized = GL_FALSE;
-   if (!initialized) {
-      init_sqrt_table();
-
-#if defined(_FPU_GETCW) && defined(_FPU_SETCW)
-      {
-         const char *debug = _mesa_getenv("MESA_DEBUG");
-         if (debug && _mesa_strcmp(debug, "FP")==0) {
-            /* die on FP exceptions */
-            fpu_control_t mask;
-            _FPU_GETCW(mask);
-            mask &= ~(_FPU_MASK_IM | _FPU_MASK_DM | _FPU_MASK_ZM
-                      | _FPU_MASK_OM | _FPU_MASK_UM);
-            _FPU_SETCW(mask);
-         }
-      }
-#endif
-      initialized = GL_TRUE;
-   }
-
-   imports->malloc = default_malloc;
-   imports->calloc = default_calloc;
-   imports->realloc = default_realloc;
-   imports->free = default_free;
-   imports->warning = default_warning;
-   imports->fatal = default_fatal;
-   imports->getenv = default_getenv; /* not used for now */
-   imports->atoi = default_atoi;
-   imports->sprintf = default_sprintf;
-   imports->fopen = default_fopen;
-   imports->fclose = default_fclose;
-   imports->fprintf = default_fprintf;
-   imports->getDrawablePrivate = default_GetDrawablePrivate;
-   imports->other = driverCtx;
-}