mirror of
https://github.com/reactos/reactos.git
synced 2024-11-01 12:26:32 +00:00
5f2bebf7a5
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does. It exposes : - The same pixel formats - The same set of extensions - Nothing more All of this without taking 10% of your build time. If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree. CORE-7499
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* $Id: fixed.h,v 1.2 1996/10/01 03:31:04 brianp Exp $ */
|
|
|
|
/*
|
|
* Mesa 3-D graphics library
|
|
* Version: 2.0
|
|
* Copyright (C) 1995-1996 Brian Paul
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
|
|
/*
|
|
*
|
|
* Revision 1.1 1996/09/13 01:38:16 brianp
|
|
* Initial revision
|
|
*
|
|
*/
|
|
|
|
|
|
#ifndef FIXED_H
|
|
#define FIXED_H
|
|
|
|
|
|
typedef int GLfixed;
|
|
|
|
#define FIXED_ONE 0x00000800
|
|
#define FIXED_HALF 0x00000400
|
|
#define FIXED_FRAC_MASK 0x000007FF
|
|
#define FIXED_INT_MASK (~FIXED_FRAC_MASK)
|
|
#define FIXED_EPSILON 1
|
|
#define FIXED_SCALE 2048.0f
|
|
#define FIXED_SHIFT 11
|
|
#define FloatToFixed(X) ((GLfixed) ((X) * FIXED_SCALE))
|
|
#define IntToFixed(I) ((I) << FIXED_SHIFT)
|
|
#define FixedToInt(X) ((X) >> FIXED_SHIFT)
|
|
#define FixedToUns(X) (((unsigned int)(X)) >> 11)
|
|
#define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
|
|
#define FixedFloor(X) ((X) & FIXED_INT_MASK)
|
|
/* 0.00048828125 = 1/FIXED_SCALE */
|
|
#define FixedToFloat(X) ((X) * 0.00048828125f)
|
|
#define PosFloatToFixed(X) FloatToFixed(X)
|
|
#define SignedFloatToFixed(X) FloatToFixed(X)
|
|
|
|
|
|
#endif
|