mirror of
https://github.com/UberGames/ioef.git
synced 2024-12-11 05:11:29 +00:00
91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/*
|
|
===========================================================================
|
|
Copyright (C) 1999-2005 Id Software, Inc.
|
|
|
|
This file is part of Quake III Arena source code.
|
|
|
|
Quake III Arena source code is free software; you can redistribute it
|
|
and/or modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of the License,
|
|
or (at your option) any later version.
|
|
|
|
Quake III Arena source code 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Quake III Arena source code; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
===========================================================================
|
|
*/
|
|
|
|
#ifdef USE_LOCAL_HEADERS
|
|
# include "SDL.h"
|
|
#else
|
|
# include <SDL.h>
|
|
#endif
|
|
|
|
#include "../renderer/tr_local.h"
|
|
#include "../qcommon/qcommon.h"
|
|
|
|
/*
|
|
=================
|
|
GLimp_SetGamma
|
|
=================
|
|
*/
|
|
void GLimp_SetGamma( unsigned char red[256], unsigned char green[256], unsigned char blue[256] )
|
|
{
|
|
Uint16 table[3][256];
|
|
int i, j;
|
|
|
|
if( !glConfig.deviceSupportsGamma || r_ignorehwgamma->integer )
|
|
return;
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
table[0][i] = ( ( ( Uint16 ) red[i] ) << 8 ) | red[i];
|
|
table[1][i] = ( ( ( Uint16 ) green[i] ) << 8 ) | green[i];
|
|
table[2][i] = ( ( ( Uint16 ) blue[i] ) << 8 ) | blue[i];
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
|
|
// Win2K and newer put this odd restriction on gamma ramps...
|
|
{
|
|
OSVERSIONINFO vinfo;
|
|
|
|
vinfo.dwOSVersionInfoSize = sizeof( vinfo );
|
|
GetVersionEx( &vinfo );
|
|
if( vinfo.dwMajorVersion >= 5 && vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT )
|
|
{
|
|
ri.Printf( PRINT_DEVELOPER, "performing gamma clamp.\n" );
|
|
for( j = 0 ; j < 3 ; j++ )
|
|
{
|
|
for( i = 0 ; i < 128 ; i++ )
|
|
{
|
|
if( table[ j ] [ i] > ( ( 128 + i ) << 8 ) )
|
|
table[ j ][ i ] = ( 128 + i ) << 8;
|
|
}
|
|
|
|
if( table[ j ] [127 ] > 254 << 8 )
|
|
table[ j ][ 127 ] = 254 << 8;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// enforce constantly increasing
|
|
for (j = 0; j < 3; j++)
|
|
{
|
|
for (i = 1; i < 256; i++)
|
|
{
|
|
if (table[j][i] < table[j][i-1])
|
|
table[j][i] = table[j][i-1];
|
|
}
|
|
}
|
|
|
|
SDL_SetGammaRamp(table[0], table[1], table[2]);
|
|
}
|
|
|