mirror of
https://github.com/dhewm/dhewm3.git
synced 2024-11-27 14:42:23 +00:00
519 lines
12 KiB
C++
519 lines
12 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#if defined( MACOS_X )
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#include <signal.h>
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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#include <SDL_endian.h>
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#include "sys/platform.h"
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#include "idlib/math/Vector.h"
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#include "idlib/math/Polynomial.h"
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#include "idlib/Str.h"
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#include "idlib/Dict.h"
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#include "framework/Common.h"
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#include "idlib/Lib.h"
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/*
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===============================================================================
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idLib
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===============================================================================
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*/
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idSys * idLib::sys = NULL;
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idCommon * idLib::common = NULL;
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idCVarSystem * idLib::cvarSystem = NULL;
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idFileSystem * idLib::fileSystem = NULL;
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int idLib::frameNumber = 0;
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/*
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================
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idLib::Init
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================
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*/
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void idLib::Init( void ) {
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assert( sizeof( bool ) == 1 );
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// assumptions from the scripting compiler/interpreter
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assert( sizeof( float ) == sizeof( int ) );
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assert( sizeof( idVec3 ) == sizeof( float ) * 3 );
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// initialize memory manager
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Mem_Init();
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// init string memory allocator
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idStr::InitMemory();
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// initialize generic SIMD implementation
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idSIMD::Init();
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// initialize math
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idMath::Init();
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// test idMatX
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//idMatX::Test();
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// test idPolynomial
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idPolynomial::Test();
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// initialize the dictionary string pools
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idDict::Init();
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}
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/*
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================
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idLib::ShutDown
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================
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*/
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void idLib::ShutDown( void ) {
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// shut down the dictionary string pools
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idDict::Shutdown();
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// shut down the string memory allocator
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idStr::ShutdownMemory();
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// shut down the SIMD engine
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idSIMD::Shutdown();
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// shut down the memory manager
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Mem_Shutdown();
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}
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/*
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===============================================================================
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Colors
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===============================================================================
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*/
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idVec4 colorBlack = idVec4( 0.00f, 0.00f, 0.00f, 1.00f );
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idVec4 colorWhite = idVec4( 1.00f, 1.00f, 1.00f, 1.00f );
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idVec4 colorRed = idVec4( 1.00f, 0.00f, 0.00f, 1.00f );
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idVec4 colorGreen = idVec4( 0.00f, 1.00f, 0.00f, 1.00f );
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idVec4 colorBlue = idVec4( 0.00f, 0.00f, 1.00f, 1.00f );
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idVec4 colorYellow = idVec4( 1.00f, 1.00f, 0.00f, 1.00f );
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idVec4 colorMagenta= idVec4( 1.00f, 0.00f, 1.00f, 1.00f );
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idVec4 colorCyan = idVec4( 0.00f, 1.00f, 1.00f, 1.00f );
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idVec4 colorOrange = idVec4( 1.00f, 0.50f, 0.00f, 1.00f );
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idVec4 colorPurple = idVec4( 0.60f, 0.00f, 0.60f, 1.00f );
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idVec4 colorPink = idVec4( 0.73f, 0.40f, 0.48f, 1.00f );
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idVec4 colorBrown = idVec4( 0.40f, 0.35f, 0.08f, 1.00f );
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idVec4 colorLtGrey = idVec4( 0.75f, 0.75f, 0.75f, 1.00f );
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idVec4 colorMdGrey = idVec4( 0.50f, 0.50f, 0.50f, 1.00f );
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idVec4 colorDkGrey = idVec4( 0.25f, 0.25f, 0.25f, 1.00f );
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static dword colorMask[2] = { 255, 0 };
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/*
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================
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ColorFloatToByte
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================
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*/
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ID_INLINE static byte ColorFloatToByte( float c ) {
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return (byte) ( ( (dword) ( c * 255.0f ) ) & colorMask[FLOATSIGNBITSET(c)] );
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}
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/*
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================
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PackColor
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================
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*/
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dword PackColor( const idVec4 &color ) {
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dword dw, dx, dy, dz;
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dx = ColorFloatToByte( color.x );
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dy = ColorFloatToByte( color.y );
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dz = ColorFloatToByte( color.z );
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dw = ColorFloatToByte( color.w );
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return ( dx << 0 ) | ( dy << 8 ) | ( dz << 16 ) | ( dw << 24 );
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#else
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return ( dx << 24 ) | ( dy << 16 ) | ( dz << 8 ) | ( dw << 0 );
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#endif
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}
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/*
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================
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UnpackColor
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================
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*/
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void UnpackColor( const dword color, idVec4 &unpackedColor ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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unpackedColor.Set( ( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 24 ) & 255 ) * ( 1.0f / 255.0f ) );
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#else
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unpackedColor.Set( ( ( color >> 24 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ) );
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#endif
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}
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/*
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================
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PackColor
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================
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*/
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dword PackColor( const idVec3 &color ) {
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dword dx, dy, dz;
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dx = ColorFloatToByte( color.x );
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dy = ColorFloatToByte( color.y );
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dz = ColorFloatToByte( color.z );
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return ( dx << 0 ) | ( dy << 8 ) | ( dz << 16 );
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#else
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return ( dy << 16 ) | ( dz << 8 ) | ( dx << 0 );
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#endif
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}
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/*
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================
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UnpackColor
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================
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*/
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void UnpackColor( const dword color, idVec3 &unpackedColor ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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unpackedColor.Set( ( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ) );
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#else
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unpackedColor.Set( ( ( color >> 16 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 8 ) & 255 ) * ( 1.0f / 255.0f ),
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( ( color >> 0 ) & 255 ) * ( 1.0f / 255.0f ) );
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#endif
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}
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/*
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===============
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idLib::Error
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===============
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*/
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void idLib::Error( const char *fmt, ... ) {
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va_list argptr;
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char text[MAX_STRING_CHARS];
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va_start( argptr, fmt );
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idStr::vsnPrintf( text, sizeof( text ), fmt, argptr );
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va_end( argptr );
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common->Error( "%s", text );
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}
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/*
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===============
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idLib::Warning
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===============
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*/
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void idLib::Warning( const char *fmt, ... ) {
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va_list argptr;
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char text[MAX_STRING_CHARS];
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va_start( argptr, fmt );
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idStr::vsnPrintf( text, sizeof( text ), fmt, argptr );
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va_end( argptr );
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common->Warning( "%s", text );
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}
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/*
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===============================================================================
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Byte order functions
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===============================================================================
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*/
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/*
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================
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FloatSwap
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================
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*/
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ID_INLINE static float FloatSwap( float f ) {
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union {
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float f;
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unsigned int u;
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} id_attribute((may_alias)) dat;
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dat.f = f;
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dat.u = SDL_Swap32(dat.u);
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return dat.f;
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}
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/*
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=====================================================================
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RevBytesSwap
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Reverses byte order in place.
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INPUTS
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bp bytes to reverse
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elsize size of the underlying data type
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elcount number of elements to swap
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RESULTS
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Reverses the byte order in each of elcount elements.
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===================================================================== */
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ID_INLINE static void RevBytesSwap( void *bp, int elsize, int elcount ) {
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register unsigned char *p, *q;
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p = ( unsigned char * ) bp;
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if ( elsize == 2 ) {
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q = p + 1;
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while ( elcount-- ) {
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*p ^= *q;
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*q ^= *p;
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*p ^= *q;
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p += 2;
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q += 2;
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}
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return;
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}
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while ( elcount-- ) {
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q = p + elsize - 1;
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while ( p < q ) {
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*p ^= *q;
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*q ^= *p;
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*p ^= *q;
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++p;
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--q;
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}
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p += elsize >> 1;
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}
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}
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/*
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=====================================================================
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RevBytesSwap
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Reverses byte order in place, then reverses bits in those bytes
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INPUTS
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bp bitfield structure to reverse
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elsize size of the underlying data type
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RESULTS
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Reverses the bitfield of size elsize.
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===================================================================== */
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ID_INLINE static void RevBitFieldSwap( void *bp, int elsize) {
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int i;
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unsigned char *p, t, v;
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LittleRevBytes( bp, elsize, 1 );
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p = (unsigned char *) bp;
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while ( elsize-- ) {
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v = *p;
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t = 0;
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for (i = 7; i; i--) {
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t <<= 1;
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v >>= 1;
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t |= v & 1;
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}
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*p++ = t;
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}
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}
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/*
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================
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SixtetsForIntLittle
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================
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*/
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ID_INLINE static void SixtetsForIntLittle( byte *out, int src) {
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byte *b = (byte *)&src;
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out[0] = ( b[0] & 0xfc ) >> 2;
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out[1] = ( ( b[0] & 0x3 ) << 4 ) + ( ( b[1] & 0xf0 ) >> 4 );
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out[2] = ( ( b[1] & 0xf ) << 2 ) + ( ( b[2] & 0xc0 ) >> 6 );
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out[3] = b[2] & 0x3f;
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}
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/*
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================
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SixtetsForIntBig
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TTimo: untested - that's the version from initial base64 encode
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================
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*/
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ID_INLINE static void SixtetsForIntBig( byte *out, int src) {
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for( int i = 0 ; i < 4 ; i++ ) {
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out[i] = src & 0x3f;
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src >>= 6;
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}
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}
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/*
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================
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IntForSixtetsLittle
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================
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*/
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ID_INLINE static int IntForSixtetsLittle( byte *in ) {
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int ret = 0;
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byte *b = (byte *)&ret;
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b[0] |= in[0] << 2;
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b[0] |= ( in[1] & 0x30 ) >> 4;
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b[1] |= ( in[1] & 0xf ) << 4;
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b[1] |= ( in[2] & 0x3c ) >> 2;
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b[2] |= ( in[2] & 0x3 ) << 6;
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b[2] |= in[3];
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return ret;
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}
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/*
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================
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IntForSixtetsBig
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TTimo: untested - that's the version from initial base64 decode
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================
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*/
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ID_INLINE static int IntForSixtetsBig( byte *in ) {
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int ret = 0;
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ret |= in[0];
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ret |= in[1] << 6;
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ret |= in[2] << 2*6;
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ret |= in[3] << 3*6;
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return ret;
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}
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/*
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==========
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Swap_IsBigEndian
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==========
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*/
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bool Swap_IsBigEndian( void ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return false;
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#else
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return true;
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#endif
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}
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short BigShort( short l ) {
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return SDL_SwapBE16(l);
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}
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short LittleShort( short l ) {
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return SDL_SwapLE16(l);
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}
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int BigInt( int l ) {
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return SDL_SwapBE32(l);
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}
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int LittleInt( int l ) {
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return SDL_SwapLE32(l);
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}
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float BigFloat( float l ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return FloatSwap(l);
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#else
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return l;
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#endif
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}
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float LittleFloat( float l ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return l;
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#else
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return FloatSwap(l);
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#endif
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}
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void BigRevBytes( void *bp, int elsize, int elcount ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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RevBytesSwap(bp, elsize, elcount);
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#else
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return;
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#endif
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}
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void LittleRevBytes( void *bp, int elsize, int elcount ){
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return;
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#else
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RevBytesSwap(bp, elsize, elcount);
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#endif
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}
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void LittleBitField( void *bp, int elsize ){
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return;
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#else
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RevBitFieldSwap(bp, elsize);
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#endif
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}
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void SixtetsForInt( byte *out, int src) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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SixtetsForIntLittle(out, src);
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#else
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SixtetsForIntBig(out, src);
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#endif
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}
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int IntForSixtets( byte *in ) {
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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return IntForSixtetsLittle(in);
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#else
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return IntForSixtetsBig(in);
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#endif
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}
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/*
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===============================================================================
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Assertion
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===============================================================================
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*/
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void AssertFailed( const char *file, int line, const char *expression ) {
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idLib::sys->DebugPrintf( "\n\nASSERTION FAILED!\n%s(%d): '%s'\n", file, line, expression );
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#ifdef _MSC_VER
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__asm int 0x03
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#elif defined( __GNUC__ )
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__builtin_trap();
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#else
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#error dont know how to crash :P
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#endif
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}
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