-/* $Id: imports.c,v 1.30 2003/01/19 15:27:38 brianp Exp $ */
+/**
+ * \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.
+ *
+ * \todo Functions still needed:
+ * - scanf
+ * - qsort
+ * - rand and RAND_MAX
+ */
/*
* Mesa 3-D graphics library
- * Version: 5.1
+ * Version: 7.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 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"),
*/
-/*
- * 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_foo() 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.
- */
-
-#include "glheader.h"
-#include "mtypes.h"
-#include "context.h"
#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)
+#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
-
/**********************************************************************/
-/* Wrappers for standard C library functions */
-/**********************************************************************/
-
-/*
- * Functions still needed:
- * scanf
- * qsort
- * bsearch
- * rand and RAND_MAX
- */
+/** \name Memory */
+/*@{*/
+/** Wrapper around malloc() */
void *
_mesa_malloc(size_t bytes)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86malloc(bytes);
-#else
return malloc(bytes);
-#endif
}
-
+/** Wrapper around calloc() */
void *
_mesa_calloc(size_t bytes)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86calloc(1, bytes);
-#else
return calloc(1, bytes);
-#endif
}
-
+/** Wrapper around free() */
void
_mesa_free(void *ptr)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86free(ptr);
-#else
free(ptr);
-#endif
}
-
+/**
+ * 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)
{
- unsigned long ptr, buf;
+#if defined(HAVE_POSIX_MEMALIGN)
+ void *mem;
+
+ (void) posix_memalign(& mem, alignment, bytes);
+ return mem;
+#else
+ uintptr_t ptr, buf;
ASSERT( alignment > 0 );
- /* Allocate extra memory to accomodate rounding up the address for
- * alignment and to record the real malloc address.
- */
- ptr = (unsigned long) _mesa_malloc(bytes + alignment + sizeof(void *));
+ ptr = (uintptr_t) _mesa_malloc(bytes + alignment + sizeof(void *));
if (!ptr)
return NULL;
- buf = (ptr + alignment + sizeof(void *)) & ~(unsigned long)(alignment - 1);
- *(unsigned long *)(buf - sizeof(void *)) = ptr;
+ buf = (ptr + alignment + sizeof(void *)) & ~(uintptr_t)(alignment - 1);
+ *(uintptr_t *)(buf - sizeof(void *)) = ptr;
#ifdef DEBUG
/* mark the non-aligned area */
#endif
return (void *) buf;
+#endif /* defined(HAVE_POSIX_MEMALIGN) */
}
-
+/**
+ * Same as _mesa_align_malloc(), but using _mesa_calloc() instead of
+ * _mesa_malloc()
+ */
void *
_mesa_align_calloc(size_t bytes, unsigned long alignment)
{
- unsigned long ptr, buf;
+#if defined(HAVE_POSIX_MEMALIGN)
+ void *mem;
+
+ mem = _mesa_align_malloc(bytes, alignment);
+ if (mem != NULL) {
+ (void) memset(mem, 0, bytes);
+ }
+
+ return mem;
+#else
+ uintptr_t ptr, buf;
ASSERT( alignment > 0 );
- ptr = (unsigned long) _mesa_calloc(bytes + alignment + sizeof(void *));
+ ptr = (uintptr_t) _mesa_calloc(bytes + alignment + sizeof(void *));
if (!ptr)
return NULL;
- buf = (ptr + alignment + sizeof(void *)) & ~(unsigned long)(alignment - 1);
- *(unsigned long *)(buf - sizeof(void *)) = ptr;
+ buf = (ptr + alignment + sizeof(void *)) & ~(uintptr_t)(alignment - 1);
+ *(uintptr_t *)(buf - sizeof(void *)) = ptr;
#ifdef DEBUG
/* mark the non-aligned area */
#endif
return (void *)buf;
+#endif /* defined(HAVE_POSIX_MEMALIGN) */
}
-
+/**
+ * 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 *))) );
+#if defined(HAVE_POSIX_MEMALIGN)
+ free(ptr);
#else
- /* The actuall address to free is stuffed in the word immediately
- * before the address the client sees.
- */
void **cubbyHole = (void **) ((char *) ptr - sizeof(void *));
void *realAddr = *cubbyHole;
_mesa_free(realAddr);
-#endif
+#endif /* defined(HAVE_POSIX_MEMALIGN) */
}
+/**
+ * Reallocate memory, with alignment.
+ */
+void *
+_mesa_align_realloc(void *oldBuffer, size_t oldSize, size_t newSize,
+ unsigned long alignment)
+{
+ const size_t copySize = (oldSize < newSize) ? oldSize : newSize;
+ void *newBuf = _mesa_align_malloc(newSize, alignment);
+ if (newBuf && oldBuffer && copySize > 0) {
+ _mesa_memcpy(newBuf, oldBuffer, copySize);
+ }
+ if (oldBuffer)
+ _mesa_align_free(oldBuffer);
+ return newBuf;
+}
+
+
+/** 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(XFree86LOADER) && defined(IN_MODULE)
- return xf86memcpy(dest, src, n);
-#elif defined(SUNOS4)
+#if defined(SUNOS4)
return memcpy((char *) dest, (char *) src, (int) n);
#else
return memcpy(dest, src, n);
#endif
}
-
+/** Wrapper around memset() */
void
_mesa_memset( void *dst, int val, size_t n )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86memset( dst, val, n );
-#elif defined(SUNOS4)
+#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 )
{
*dst++ = val;
}
-
+/** Wrapper around either memset() or bzero() */
void
_mesa_bzero( void *dst, size_t n )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86memset( dst, 0, n );
-#elif defined(__FreeBSD__)
+#if defined(__FreeBSD__)
bzero( dst, n );
#else
memset( dst, 0, n );
#endif
}
+/** Wrapper around memcmp() */
+int
+_mesa_memcmp( const void *s1, const void *s2, size_t n )
+{
+#if defined(SUNOS4)
+ return memcmp( (char *) s1, (char *) s2, (int) n );
+#else
+ return memcmp(s1, s2, n);
+#endif
+}
+
+/*@}*/
+
+/**********************************************************************/
+/** \name Math */
+/*@{*/
+
+/** Wrapper around sin() */
double
_mesa_sin(double a)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86sin(a);
-#else
return sin(a);
-#endif
}
+/** Single precision wrapper around sin() */
+float
+_mesa_sinf(float a)
+{
+ return (float) sin((double) a);
+}
+/** Wrapper around cos() */
double
_mesa_cos(double a)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86cos(a);
-#else
return cos(a);
-#endif
}
+/** Single precision wrapper around asin() */
+float
+_mesa_asinf(float x)
+{
+ return (float) asin((double) x);
+}
+
+/** Single precision wrapper around atan() */
+float
+_mesa_atanf(float x)
+{
+ return (float) atan((double) x);
+}
+/** Wrapper around sqrt() */
double
-_mesa_sqrt(double x)
+_mesa_sqrtd(double x)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86sqrt(x);
-#else
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 */
+
+void
+_mesa_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
+#else
+ return (float) (1.0 / sqrt(n));
+#endif
+}
+
+
+/** Wrapper around pow() */
double
_mesa_pow(double x, double y)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86pow(x, y);
-#else
return pow(x, y);
+}
+
+
+/**
+ * Find the first bit set in a word.
+ */
+int
+_mesa_ffs(int i)
+{
+#if (defined(_WIN32) && !defined(__MINGW32__) ) || defined(__IBMC__) || defined(__IBMCPP__)
+ register int bit = 1;
+ if ((i & 0xffff) == 0) {
+ bit += 16;
+ i >>= 16;
+ }
+ if ((i & 0xff) == 0) {
+ bit += 8;
+ i >>= 8;
+ }
+ if ((i & 0xf) == 0) {
+ bit += 4;
+ i >>= 4;
+ }
+ if ((i & 0x3) == 0) {
+ bit += 2;
+ i >>= 2;
+ }
+ return (i) ? (bit + ((i + 1) & 0x01)) : 0;
+#else
+ return ffs(i);
+#endif
+}
+
+
+/**
+ * Find position of first bit set in given value.
+ * XXX Warning: this function can only be used on 64-bit systems!
+ * \return position of least-significant bit set, starting at 1, return zero
+ * if no bits set.
+ */
+int
+#ifdef __MINGW32__
+_mesa_ffsll(long val)
+#else
+_mesa_ffsll(long long val)
+#endif
+{
+#ifdef ffsll
+ return ffsll(val);
+#else
+ int bit;
+
+ assert(sizeof(val) == 8);
+
+ bit = _mesa_ffs(val);
+ if (bit != 0)
+ return bit;
+
+ bit = _mesa_ffs(val >> 32);
+ if (bit != 0)
+ return 32 + bit;
+
+ return 0;
#endif
}
+/**
+ * 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 Sort & Search */
+/*@{*/
+
+/**
+ * Wrapper for bsearch().
+ */
+void *
+_mesa_bsearch( const void *key, const void *base, size_t nmemb, size_t size,
+ int (*compar)(const void *, const void *) )
+{
+ return bsearch(key, base, nmemb, size, compar);
+}
+
+/*@}*/
+
+
+/**********************************************************************/
+/** \name Environment vars */
+/*@{*/
+
+/**
+ * Wrapper for getenv().
+ */
char *
_mesa_getenv( const char *var )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86getenv(var);
+#if defined(_XBOX)
+ return NULL;
#else
return getenv(var);
#endif
}
+/*@}*/
+
+/**********************************************************************/
+/** \name String */
+/*@{*/
+
+/** Wrapper around strstr() */
char *
_mesa_strstr( const char *haystack, const char *needle )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strstr(haystack, needle);
-#else
return strstr(haystack, needle);
-#endif
}
-
+/** Wrapper around strncat() */
char *
_mesa_strncat( char *dest, const char *src, size_t n )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strncat(dest, src, n);
-#else
return strncat(dest, src, n);
-#endif
}
-
+/** Wrapper around strcpy() */
char *
_mesa_strcpy( char *dest, const char *src )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strcpy(dest, src);
-#else
return strcpy(dest, src);
-#endif
}
-
+/** Wrapper around strncpy() */
char *
_mesa_strncpy( char *dest, const char *src, size_t n )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strncpy(dest, src, n);
-#else
return strncpy(dest, src, n);
-#endif
}
-
+/** Wrapper around strlen() */
size_t
_mesa_strlen( const char *s )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strlen(s);
-#else
return strlen(s);
-#endif
}
-
+/** Wrapper around strcmp() */
int
_mesa_strcmp( const char *s1, const char *s2 )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strcmp(s1, s2);
-#else
return strcmp(s1, s2);
-#endif
}
-
+/** Wrapper around strncmp() */
int
_mesa_strncmp( const char *s1, const char *s2, size_t n )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strncmp(s1, s2, n);
-#else
return strncmp(s1, s2, n);
-#endif
}
-
+/**
+ * Implemented using _mesa_malloc() and _mesa_strcpy.
+ * Note that NULL is handled accordingly.
+ */
char *
_mesa_strdup( const char *s )
{
- int l = _mesa_strlen(s);
- char *s2 = (char *) _mesa_malloc(l + 1);
- if (s2)
- _mesa_strcpy(s2, s);
- return s2;
+ if (s) {
+ size_t l = _mesa_strlen(s);
+ char *s2 = (char *) _mesa_malloc(l + 1);
+ if (s2)
+ _mesa_strcpy(s2, s);
+ return s2;
+ }
+ else {
+ return NULL;
+ }
}
-
+/** Wrapper around atoi() */
int
_mesa_atoi(const char *s)
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86atoi(s);
-#else
return atoi(s);
-#endif
}
-
-float
-_mesa_strtof( const char *s, char **end )
+/** Wrapper around strtod() */
+double
+_mesa_strtod( const char *s, char **end )
{
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86strtof(s, end);
-#else
- return (float) strtod(s, end);
-#endif
+ return strtod(s, end);
}
+/*@}*/
+
+
+/**********************************************************************/
+/** \name I/O */
+/*@{*/
+/** Wrapper around vsprintf() */
int
_mesa_sprintf( char *str, const char *fmt, ... )
{
int r;
va_list args;
va_start( args, fmt );
- va_end( args );
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- r = xf86vsprintf( str, fmt, args );
-#else
r = vsprintf( str, fmt, args );
-#endif
+ va_end( args );
return r;
}
-
+/** Wrapper around printf(), 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);
+ vfprintf(stderr, fmtString, args);
va_end( args );
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86printf("%s", s);
-#else
- printf("%s", s);
-#endif
}
+/** Wrapper around vsprintf() */
+int
+_mesa_vsprintf( char *str, const char *fmt, va_list args )
+{
+ return vsprintf( str, fmt, args );
+}
+
+/*@}*/
+
+/**********************************************************************/
+/** \name Diagnostics */
+/*@{*/
+
+/**
+ * Report a warning (a recoverable error condition) to stderr if
+ * either DEBUG is defined or the MESA_DEBUG env var is set.
+ *
+ * \param ctx GL context.
+ * \param fmtString printf() alike format string.
+ */
void
_mesa_warning( GLcontext *ctx, const char *fmtString, ... )
{
debug = _mesa_getenv("MESA_DEBUG") ? GL_TRUE : GL_FALSE;
#endif
if (debug) {
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86fprintf(stderr, "Mesa warning: %s\n", str);
-#else
fprintf(stderr, "Mesa warning: %s\n", str);
-#endif
}
}
-
-/*
- * This function is called when the Mesa user has stumbled into a code
- * path which may not be implemented fully or correctly.
+/**
+ * Report an internla implementation problem.
+ * Prints the message to stderr via fprintf().
+ *
+ * \param ctx GL context.
+ * \param s problem description string.
*/
void
_mesa_problem( const GLcontext *ctx, const char *fmtString, ... )
vsnprintf( str, MAXSTRING, fmtString, args );
va_end( args );
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86fprintf(stderr, "Mesa implementation error: %s\n", str);
- xf86fprintf(stderr, "Please report to the DRI project at dri.sourceforge.net\n");
-#else
- fprintf(stderr, "Mesa implementation error: %s\n", str);
- fprintf(stderr, "Please report to the Mesa bug database at www.mesa3d.org\n" );
-#endif
+ fprintf(stderr, "Mesa %s implementation error: %s\n", MESA_VERSION_STRING, str);
+ fprintf(stderr, "Please report at bugzilla.freedesktop.org\n");
}
-
-/*
- * If in debug mode, print error message to stdout.
- * Also, record the error code by calling _mesa_record_error().
- * Input: ctx - the GL context
- * error - the error value
- * fmtString - printf-style format string, followed by optional args
+/**
+ * Record an OpenGL state error. These usually occur when the users
+ * passes invalid parameters to a GL function.
+ *
+ * If debugging is enabled (either at compile-time via the DEBUG macro, or
+ * run-time via the MESA_DEBUG environment variable), report the error with
+ * _mesa_debug().
+ *
+ * \param ctx the GL context.
+ * \param error the error value.
+ * \param fmtString printf() style format string, followed by optional args
*/
void
_mesa_error( GLcontext *ctx, GLenum error, const char *fmtString, ... )
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, "Mesa user error: %s in %s\n", errstr, where);
+ _mesa_debug(ctx, "User error: %s in %s\n", errstr, where);
}
_mesa_record_error(ctx, error);
}
-
-/*
- * Call this to report debug information. Uses stderr.
+/**
+ * Report debug information. Print error message to stderr via fprintf().
+ * No-op if DEBUG mode not enabled.
+ *
+ * \param ctx GL context.
+ * \param fmtString printf()-style format string, followed by optional args.
*/
void
_mesa_debug( const GLcontext *ctx, const char *fmtString, ... )
{
+#ifdef DEBUG
char s[MAXSTRING];
va_list args;
va_start(args, fmtString);
vsnprintf(s, MAXSTRING, fmtString, args);
va_end(args);
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- xf86fprintf(stderr, "Mesa: %s", s);
-#else
fprintf(stderr, "Mesa: %s", s);
-#endif
-}
-
-
-
-/**********************************************************************/
-/* Default Imports Wrapper */
-/**********************************************************************/
-
-static void *
-default_malloc(__GLcontext *gc, size_t size)
-{
- (void) gc;
- return _mesa_malloc(size);
-}
-
-static void *
-default_calloc(__GLcontext *gc, size_t numElem, size_t elemSize)
-{
- (void) gc;
- return _mesa_calloc(numElem * elemSize);
-}
-
-static void *
-default_realloc(__GLcontext *gc, void *oldAddr, size_t newSize)
-{
- (void) gc;
-#if defined(XFree86LOADER) && defined(IN_MODULE)
- return xf86realloc(oldAddr, newSize);
-#else
- return realloc(oldAddr, newSize);
-#endif
-}
-
-static void
-default_free(__GLcontext *gc, void *addr)
-{
- (void) gc;
- _mesa_free(addr);
-}
-
-static char * CAPI
-default_getenv( __GLcontext *gc, const char *var )
-{
- (void) gc;
- return _mesa_getenv(var);
-}
-
-static void
-default_warning(__GLcontext *gc, char *str)
-{
- _mesa_warning(gc, str);
-}
-
-static void
-default_fatal(__GLcontext *gc, char *str)
-{
- _mesa_problem(gc, str);
- abort();
-}
-
-static int CAPI
-default_atoi(__GLcontext *gc, const char *str)
-{
- (void) gc;
- return atoi(str);
-}
-
-static int CAPI
-default_sprintf(__GLcontext *gc, char *str, const char *fmt, ...)
-{
- int r;
- va_list args;
- va_start( args, fmt );
- r = vsprintf( str, fmt, args );
- va_end( args );
- return r;
-}
-
-static void * CAPI
-default_fopen(__GLcontext *gc, const char *path, const char *mode)
-{
- return fopen(path, mode);
-}
-
-static int CAPI
-default_fclose(__GLcontext *gc, void *stream)
-{
- return fclose((FILE *) stream);
-}
-
-static int CAPI
-default_fprintf(__GLcontext *gc, void *stream, const char *fmt, ...)
-{
- int r;
- va_list args;
- va_start( args, fmt );
- r = vfprintf( (FILE *) stream, fmt, args );
- va_end( args );
- return r;
-}
-
-/* XXX this really is driver-specific and can't be here */
-static __GLdrawablePrivate *
-default_GetDrawablePrivate(__GLcontext *gc)
-{
- return NULL;
+#endif /* DEBUG */
+ (void) ctx;
+ (void) fmtString;
}
+/*@}*/
-
-/*
- * Initialize a __GLimports object to point to the functions in
- * this file. This is to be called from device drivers.
- * Input: imports - the object to init
- * driverCtx - pointer to device driver-specific data
+/**
+ * Wrapper for exit().
*/
void
-_mesa_init_default_imports(__GLimports *imports, void *driverCtx)
-{
- 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;
+_mesa_exit( int status )
+{
+ exit(status);
}
projects / mesa.git / blobdiff