-/**
- * \file imports.h
- * Standard C library function wrappers.
- *
- * This file provides wrappers for all the standard C library functions
- * like malloc(), free(), printf(), getenv(), etc.
- */
-
/*
* Mesa 3-D graphics library
- * Version: 5.1
+ * Version: 6.2
*
- * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
+ * 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"),
*/
+/**
+ * \file imports.h
+ * Standard C library function wrappers.
+ *
+ * This file provides wrappers for all the standard C library functions
+ * like malloc(), free(), printf(), getenv(), etc.
+ */
+
+
#ifndef IMPORTS_H
#define IMPORTS_H
/** Set \p N bytes in \p DST to \p VAL */
#define MEMSET( DST, VAL, N ) _mesa_memset(DST, VAL, N)
-#define MEMSET16( DST, VAL, N ) _mesa_memset16( (DST), (VAL), (size_t) (N) )
-
/*@}*/
* this macro.
* Both pointers/offsets are expressed in bytes.
*/
-#define ADD_POINTERS(A, B) ( (A) + (unsigned long) (B) )
+#define ADD_POINTERS(A, B) ( (GLubyte *) (A) + (uintptr_t) (B) )
/**********************************************************************/
/*@}*/
-/**********************************************************************/
-/** \name External pixel buffer allocation.
- *
- * If you want Mesa's depth/stencil/accum/etc buffers to be allocated with a
- * specialized allocator you can define MESA_EXTERNAL_BUFFERALLOC and implement
- * _ext_mesa_alloc_pixelbuffer() _ext_mesa_free_pixelbuffer() in your
- * application.
- *
- * \author
- * Contributed by Gerk Huisma (gerk@five-d.demon.nl).
- */
-/*@{*/
-
-/**
- * \def MESA_PBUFFER_ALLOC
- * Allocate a pixel buffer.
- */
-
/**
- * \def MESA_PBUFFER_FREE
- * Free a pixel buffer.
+ * Sometimes we treat GLfloats as GLints. On x86 systems, moving a float
+ * as a int (thereby using integer registers instead of FP registers) is
+ * a performance win. Typically, this can be done with ordinary casts.
+ * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)
+ * these casts generate warnings.
+ * The following union typedef is used to solve that.
*/
-
-#ifdef MESA_EXTERNAL_BUFFERALLOC
-extern void *_ext_mesa_alloc_pixelbuffer( unsigned int size );
-extern void _ext_mesa_free_pixelbuffer( void *pb );
-
-#define MESA_PBUFFER_ALLOC(BYTES) (void *) _ext_mesa_alloc_pixelbuffer(BYTES)
-#define MESA_PBUFFER_FREE(PTR) _ext_mesa_free_pixelbuffer(PTR)
-#else
-/* Default buffer allocation uses the aligned allocation routines: */
-#define MESA_PBUFFER_ALLOC(BYTES) (void *) _mesa_align_malloc(BYTES, 512)
-#define MESA_PBUFFER_FREE(PTR) _mesa_align_free(PTR)
-#endif
-
-/*@}*/
+typedef union { GLfloat f; GLint i; } fi_type;
#define M_PI (3.1415926536)
#endif
+#ifndef M_E
+#define M_E (2.7182818284590452354)
+#endif
+
+
/* XXX this is a bit of a hack needed for compilation within XFree86 */
#ifndef FLT_MIN
#define FLT_MIN (1.0e-37)
***/
#if defined(__i386__) || defined(__386__) || defined(__sparc__) || \
defined(__s390x__) || defined(__powerpc__) || \
- ( defined(__alpha__) && ( defined(__IEEE_FLOAT) || !defined(VMS) ) )
+ defined(__amd64__) || \
+ defined(ia64) || defined(__ia64__) || \
+ defined(__hppa__) || defined(hpux) || \
+ defined(__mips) || defined(_MIPS_ARCH) || \
+ defined(__arm__) || \
+ (defined(__alpha__) && (defined(__IEEE_FLOAT) || !defined(VMS)))
#define USE_IEEE
#define IEEE_ONE 0x3f800000
#endif
#define IS_INF_OR_NAN(x) (!isfinite(x))
#elif defined(finite)
#define IS_INF_OR_NAN(x) (!finite(x))
-#elif __VMS
+#elif defined(__VMS)
#define IS_INF_OR_NAN(x) (!finite(x))
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define IS_INF_OR_NAN(x) (!isfinite(x))
*** IS_NEGATIVE: test if float is negative
***/
#if defined(USE_IEEE)
-#define GET_FLOAT_BITS(x) ((fi_type *) &(x))->i
-#define IS_NEGATIVE(x) (GET_FLOAT_BITS(x) & (1<<31))
+static INLINE int GET_FLOAT_BITS( float x )
+{
+ fi_type fi;
+ fi.f = x;
+ return fi.i;
+}
+#define IS_NEGATIVE(x) (GET_FLOAT_BITS(x) < 0)
#else
#define IS_NEGATIVE(x) (x < 0.0F)
#endif
#define CEILF(x) ((GLfloat) xf86ceil(x))
#define FLOORF(x) ((GLfloat) xf86floor(x))
#define FABSF(x) ((GLfloat) xf86fabs(x))
+#define LDEXPF(x,y) ((GLfloat) xf86ldexp(x,y))
#elif defined(__gnu_linux__)
/* C99 functions */
#define CEILF(x) ceilf(x)
#define FLOORF(x) floorf(x)
#define FABSF(x) fabsf(x)
+#define LDEXPF(x,y) ldexpf(x,y)
#else
#define CEILF(x) ((GLfloat) ceil(x))
#define FLOORF(x) ((GLfloat) floor(x))
#define FABSF(x) ((GLfloat) fabs(x))
+#define LDEXPF(x,y) ((GLfloat) ldexp(x,y))
#endif
return r;
}
#define IROUND(x) iround(x)
-#elif defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__)
+#elif defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__) && \
+ (!defined(__BEOS__) || (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)))
static INLINE int iround(float f)
{
int r;
/***
- *** UNCLAMPED_FLOAT_TO_UBYTE: map float from {0,1} to ubyte in [0,255]
- *** CLAMPED_FLOAT_TO_UBYTE: map float in [0,1] to ubyte in [0,255]
+ *** UNCLAMPED_FLOAT_TO_UBYTE: clamp float to [0,1] and map to ubyte in [0,255]
+ *** CLAMPED_FLOAT_TO_UBYTE: map float known to be in [0,1] to ubyte in [0,255]
***/
#if defined(USE_IEEE) && !defined(DEBUG)
#define IEEE_0996 0x3f7f0000 /* 0.996 or so */
do { \
fi_type __tmp; \
__tmp.f = (F); \
- UB = ((__tmp.i >= IEEE_0996) \
- ? ((GLint)__tmp.i < 0) ? (GLubyte)0 : (GLubyte)255 \
- : (__tmp.f = __tmp.f*(255.0F/256.0F) + 32768.0F, \
- (GLubyte)__tmp.i)); \
+ if (__tmp.i < 0) \
+ UB = (GLubyte) 0; \
+ else if (__tmp.i >= IEEE_0996) \
+ UB = (GLubyte) 255; \
+ else { \
+ __tmp.f = __tmp.f * (255.0F/256.0F) + 32768.0F; \
+ UB = (GLubyte) __tmp.i; \
+ } \
+ } while (0)
+#define CLAMPED_FLOAT_TO_UBYTE(UB, F) \
+ do { \
+ fi_type __tmp; \
+ __tmp.f = (F) * (255.0F/256.0F) + 32768.0F; \
+ UB = (GLubyte) __tmp.i; \
} while (0)
-#define CLAMPED_FLOAT_TO_UBYTE(ub, f) \
- UNCLAMPED_FLOAT_TO_UBYTE(ub, f)
#else
#define UNCLAMPED_FLOAT_TO_UBYTE(ub, f) \
ub = ((GLubyte) IROUND(CLAMP((f), 0.0F, 1.0F) * 255.0F))
/***
- *** COPY_FLOAT: copy a float from src to dest, avoid slow FP regs if possible
+ *** COPY_FLOAT: copy a float from src to dest.
***/
-#if defined(USE_IEEE) && !defined(DEBUG)
-#define COPY_FLOAT( dst, src ) \
- ((fi_type *) &(dst))->i = ((fi_type *) &(src))->i
-#else
#define COPY_FLOAT( dst, src ) (dst) = (src)
-#endif
/***
extern unsigned int
_mesa_bitcount(unsigned int n);
-extern GLhalfNV
+extern GLhalfARB
_mesa_float_to_half(float f);
extern float
-_mesa_half_to_float(GLhalfNV h);
+_mesa_half_to_float(GLhalfARB h);
extern char *
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