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added SET/CLEAR/TEST_BITS macros, misc clean-up

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This commit is contained in:
Brian Paul 1999-11-22 18:57:56 +00:00
parent f2db7ed71e
commit 414b6e7c00
1 changed files with 38 additions and 38 deletions
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76
src/mesa/main/macros.h
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@ -1,4 +1,4 @@
/* $Id: macros.h,v 1.7 1999/11/11 01:22:27 brianp Exp $ */
/* $Id: macros.h,v 1.8 1999/11/22 18:57:56 brianp Exp $ */
/*
* Mesa 3-D graphics library
@ -53,6 +53,43 @@
#endif
/* Limits: */
#define MAX_GLUSHORT 0xffff
#define MAX_GLUINT 0xffffffff
/* Some compilers don't like some of Mesa's const usage */
#ifdef NO_CONST
# define CONST
#else
# define CONST const
#endif
/* Pi */
#ifndef M_PI
#define M_PI (3.1415926)
#endif
/* Degrees to radians conversion: */
#define DEG2RAD (M_PI/180.0)
#ifndef NULL
#define NULL 0
#endif
/*
* Bitmask helpers
*/
#define SET_BITS(WORD, BITS) (WORD) |= (BITS)
#define CLEAR_BITS(WORD, BITS) (WORD) &= ~(BITS)
#define TEST_BITS(WORD, BITS) ((WORD) & (BITS))
/* Stepping a GLfloat pointer by a byte stride
*/
#define STRIDE_F(p, i) (p = (GLfloat *)((GLubyte *)p + i))
@ -60,11 +97,6 @@
#define STRIDE_T(p, t, i) (p = (t *)((GLubyte *)p + i))
/* Limits: */
#define MAX_GLUSHORT 0xffff
#define MAX_GLUINT 0xffffffff
#define ZERO_2V( DST ) (DST)[0] = (DST)[1] = 0
#define ZERO_3V( DST ) (DST)[0] = (DST)[1] = (DST)[2] = 0
#define ZERO_4V( DST ) (DST)[0] = (DST)[1] = (DST)[2] = (DST)[3] = 0
@ -413,18 +445,12 @@ do { \
* Integer / float conversion for colors, normals, etc.
*/
#define BYTE_TO_UBYTE(b) (b < 0 ? 0 : (GLubyte) b)
#define SHORT_TO_UBYTE(s) (s < 0 ? 0 : (GLubyte) (s >> 7))
#define USHORT_TO_UBYTE(s) (GLubyte) (s >> 8)
#define INT_TO_UBYTE(i) (i < 0 ? 0 : (GLubyte) (i >> 23))
#define UINT_TO_UBYTE(i) (GLubyte) (i >> 24)
/* Convert GLubyte in [0,255] to GLfloat in [0.0,1.0] */
#define UBYTE_TO_FLOAT(B) ((GLfloat) (B) * (1.0F / 255.0F))
@ -471,30 +497,4 @@ do { \
#define FLOAT_TO_INT(X) ( (GLint) (2147483647.0 * (X)) )
/* Some compilers don't like some of Mesa's const usage */
#ifdef NO_CONST
# define CONST
#else
# define CONST const
#endif
/* Pi */
#ifndef M_PI
#define M_PI (3.1415926)
#endif
/* Degrees to radians conversion: */
#define DEG2RAD (M_PI/180.0)
#ifndef NULL
#define NULL 0
#endif
#endif /*MACROS_H*/