mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-11-21 20:01:13 +00:00
765 lines
20 KiB
C++
765 lines
20 KiB
C++
/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition 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 BFG Edition 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 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 BFG Edition 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 BFG Edition 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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#pragma hdrstop
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#include "../idlib/precompiled.h"
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#include "tr_local.h"
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/*
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This file only has a single entry point:
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void R_LoadImage( const char *name, byte **pic, int *width, int *height, bool makePowerOf2 );
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*/
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/*
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* Include file for users of JPEG library.
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* You will need to have included system headers that define at least
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* the typedefs FILE and size_t before you can include jpeglib.h.
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* (stdio.h is sufficient on ANSI-conforming systems.)
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* You may also wish to include "jerror.h".
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*/
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#include "jpeg-6/jpeglib.h"
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// hooks from jpeg lib to our system
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void jpg_Error( const char *fmt, ... ) {
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va_list argptr;
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char msg[2048];
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va_start (argptr,fmt);
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vsprintf (msg,fmt,argptr);
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va_end (argptr);
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common->FatalError( "%s", msg );
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}
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void jpg_Printf( const char *fmt, ... ) {
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va_list argptr;
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char msg[2048];
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va_start (argptr,fmt);
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vsprintf (msg,fmt,argptr);
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va_end (argptr);
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common->Printf( "%s", msg );
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}
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/*
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================
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R_WriteTGA
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================
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*/
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void R_WriteTGA( const char *filename, const byte *data, int width, int height, bool flipVertical, const char * basePath ) {
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byte *buffer;
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int i;
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int bufferSize = width*height*4 + 18;
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int imgStart = 18;
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idTempArray<byte> buf( bufferSize );
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buffer = (byte *)buf.Ptr();
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memset( buffer, 0, 18 );
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buffer[2] = 2; // uncompressed type
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buffer[12] = width&255;
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buffer[13] = width>>8;
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buffer[14] = height&255;
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buffer[15] = height>>8;
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buffer[16] = 32; // pixel size
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if ( !flipVertical ) {
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buffer[17] = (1<<5); // flip bit, for normal top to bottom raster order
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}
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// swap rgb to bgr
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for ( i=imgStart ; i<bufferSize ; i+=4 ) {
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buffer[i] = data[i-imgStart+2]; // blue
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buffer[i+1] = data[i-imgStart+1]; // green
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buffer[i+2] = data[i-imgStart+0]; // red
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buffer[i+3] = data[i-imgStart+3]; // alpha
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}
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fileSystem->WriteFile( filename, buffer, bufferSize, basePath );
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}
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static void LoadTGA( const char *name, byte **pic, int *width, int *height, ID_TIME_T *timestamp );
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static void LoadJPG( const char *name, byte **pic, int *width, int *height, ID_TIME_T *timestamp );
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/*
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========================================================================
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TGA files are used for 24/32 bit images
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========================================================================
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*/
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typedef struct _TargaHeader {
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unsigned char id_length, colormap_type, image_type;
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unsigned short colormap_index, colormap_length;
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unsigned char colormap_size;
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unsigned short x_origin, y_origin, width, height;
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unsigned char pixel_size, attributes;
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} TargaHeader;
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/*
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=========================================================
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TARGA LOADING
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=========================================================
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*/
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/*
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=============
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LoadTGA
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=============
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*/
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static void LoadTGA( const char *name, byte **pic, int *width, int *height, ID_TIME_T *timestamp ) {
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int columns, rows, numPixels, fileSize, numBytes;
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byte *pixbuf;
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int row, column;
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byte *buf_p;
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byte *buffer;
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TargaHeader targa_header;
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byte *targa_rgba;
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if ( !pic ) {
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fileSystem->ReadFile( name, NULL, timestamp );
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return; // just getting timestamp
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}
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*pic = NULL;
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//
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// load the file
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//
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fileSize = fileSystem->ReadFile( name, (void **)&buffer, timestamp );
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if ( !buffer ) {
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return;
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}
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buf_p = buffer;
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targa_header.id_length = *buf_p++;
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targa_header.colormap_type = *buf_p++;
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targa_header.image_type = *buf_p++;
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targa_header.colormap_index = LittleShort ( *(short *)buf_p );
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buf_p += 2;
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targa_header.colormap_length = LittleShort ( *(short *)buf_p );
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buf_p += 2;
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targa_header.colormap_size = *buf_p++;
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targa_header.x_origin = LittleShort ( *(short *)buf_p );
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buf_p += 2;
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targa_header.y_origin = LittleShort ( *(short *)buf_p );
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buf_p += 2;
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targa_header.width = LittleShort ( *(short *)buf_p );
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buf_p += 2;
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targa_header.height = LittleShort ( *(short *)buf_p );
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buf_p += 2;
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targa_header.pixel_size = *buf_p++;
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targa_header.attributes = *buf_p++;
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if ( targa_header.image_type != 2 && targa_header.image_type != 10 && targa_header.image_type != 3 ) {
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common->Error( "LoadTGA( %s ): Only type 2 (RGB), 3 (gray), and 10 (RGB) TGA images supported\n", name );
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}
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if ( targa_header.colormap_type != 0 ) {
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common->Error( "LoadTGA( %s ): colormaps not supported\n", name );
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}
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if ( ( targa_header.pixel_size != 32 && targa_header.pixel_size != 24 ) && targa_header.image_type != 3 ) {
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common->Error( "LoadTGA( %s ): Only 32 or 24 bit images supported (no colormaps)\n", name );
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}
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if ( targa_header.image_type == 2 || targa_header.image_type == 3 ) {
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numBytes = targa_header.width * targa_header.height * ( targa_header.pixel_size >> 3 );
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if ( numBytes > fileSize - 18 - targa_header.id_length ) {
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common->Error( "LoadTGA( %s ): incomplete file\n", name );
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}
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}
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columns = targa_header.width;
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rows = targa_header.height;
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numPixels = columns * rows;
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if ( width ) {
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*width = columns;
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}
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if ( height ) {
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*height = rows;
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}
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targa_rgba = (byte *)R_StaticAlloc(numPixels*4, TAG_IMAGE);
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*pic = targa_rgba;
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if ( targa_header.id_length != 0 ) {
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buf_p += targa_header.id_length; // skip TARGA image comment
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}
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if ( targa_header.image_type == 2 || targa_header.image_type == 3 )
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{
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// Uncompressed RGB or gray scale image
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for( row = rows - 1; row >= 0; row-- )
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{
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pixbuf = targa_rgba + row*columns*4;
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for( column = 0; column < columns; column++)
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{
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unsigned char red,green,blue,alphabyte;
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switch( targa_header.pixel_size )
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{
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case 8:
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blue = *buf_p++;
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green = blue;
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red = blue;
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*pixbuf++ = red;
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*pixbuf++ = green;
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*pixbuf++ = blue;
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*pixbuf++ = 255;
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break;
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case 24:
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blue = *buf_p++;
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green = *buf_p++;
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red = *buf_p++;
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*pixbuf++ = red;
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*pixbuf++ = green;
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*pixbuf++ = blue;
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*pixbuf++ = 255;
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break;
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case 32:
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blue = *buf_p++;
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green = *buf_p++;
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red = *buf_p++;
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alphabyte = *buf_p++;
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*pixbuf++ = red;
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*pixbuf++ = green;
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*pixbuf++ = blue;
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*pixbuf++ = alphabyte;
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break;
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default:
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common->Error( "LoadTGA( %s ): illegal pixel_size '%d'\n", name, targa_header.pixel_size );
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break;
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}
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}
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}
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}
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else if ( targa_header.image_type == 10 ) { // Runlength encoded RGB images
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unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j;
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red = 0;
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green = 0;
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blue = 0;
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alphabyte = 0xff;
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for( row = rows - 1; row >= 0; row-- ) {
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pixbuf = targa_rgba + row*columns*4;
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for( column = 0; column < columns; ) {
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packetHeader= *buf_p++;
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packetSize = 1 + (packetHeader & 0x7f);
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if ( packetHeader & 0x80 ) { // run-length packet
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switch( targa_header.pixel_size ) {
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case 24:
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blue = *buf_p++;
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green = *buf_p++;
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red = *buf_p++;
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alphabyte = 255;
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break;
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case 32:
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blue = *buf_p++;
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green = *buf_p++;
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red = *buf_p++;
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alphabyte = *buf_p++;
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break;
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default:
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common->Error( "LoadTGA( %s ): illegal pixel_size '%d'\n", name, targa_header.pixel_size );
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break;
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}
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for( j = 0; j < packetSize; j++ ) {
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*pixbuf++=red;
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*pixbuf++=green;
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*pixbuf++=blue;
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*pixbuf++=alphabyte;
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column++;
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if ( column == columns ) { // run spans across rows
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column = 0;
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if ( row > 0) {
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row--;
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}
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else {
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goto breakOut;
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}
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pixbuf = targa_rgba + row*columns*4;
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}
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}
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}
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else { // non run-length packet
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for( j = 0; j < packetSize; j++ ) {
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switch( targa_header.pixel_size ) {
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case 24:
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blue = *buf_p++;
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green = *buf_p++;
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red = *buf_p++;
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*pixbuf++ = red;
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*pixbuf++ = green;
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*pixbuf++ = blue;
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*pixbuf++ = 255;
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break;
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case 32:
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blue = *buf_p++;
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green = *buf_p++;
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red = *buf_p++;
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alphabyte = *buf_p++;
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*pixbuf++ = red;
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*pixbuf++ = green;
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*pixbuf++ = blue;
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*pixbuf++ = alphabyte;
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break;
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default:
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common->Error( "LoadTGA( %s ): illegal pixel_size '%d'\n", name, targa_header.pixel_size );
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break;
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}
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column++;
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if ( column == columns ) { // pixel packet run spans across rows
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column = 0;
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if ( row > 0 ) {
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row--;
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}
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else {
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goto breakOut;
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}
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pixbuf = targa_rgba + row*columns*4;
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}
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}
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}
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}
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breakOut: ;
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}
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}
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if ( (targa_header.attributes & (1<<5)) ) { // image flp bit
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if ( width != NULL && height != NULL ) {
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R_VerticalFlip( *pic, *width, *height );
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}
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}
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fileSystem->FreeFile( buffer );
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}
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/*
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=========================================================
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JPG LOADING
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Interfaces with the huge libjpeg
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=========================================================
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*/
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/*
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=============
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LoadJPG
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=============
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*/
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static void LoadJPG( const char *filename, unsigned char **pic, int *width, int *height, ID_TIME_T *timestamp ) {
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/* This struct contains the JPEG decompression parameters and pointers to
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* working space (which is allocated as needed by the JPEG library).
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*/
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struct jpeg_decompress_struct cinfo;
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/* We use our private extension JPEG error handler.
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* Note that this struct must live as long as the main JPEG parameter
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* struct, to avoid dangling-pointer problems.
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*/
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/* This struct represents a JPEG error handler. It is declared separately
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* because applications often want to supply a specialized error handler
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* (see the second half of this file for an example). But here we just
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* take the easy way out and use the standard error handler, which will
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* print a message on stderr and call exit() if compression fails.
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* Note that this struct must live as long as the main JPEG parameter
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* struct, to avoid dangling-pointer problems.
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*/
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struct jpeg_error_mgr jerr;
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/* More stuff */
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JSAMPARRAY buffer; /* Output row buffer */
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int row_stride; /* physical row width in output buffer */
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unsigned char *out;
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byte *fbuffer;
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byte *bbuf;
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/* In this example we want to open the input file before doing anything else,
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* so that the setjmp() error recovery below can assume the file is open.
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* VERY IMPORTANT: use "b" option to fopen() if you are on a machine that
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* requires it in order to read binary files.
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*/
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// JDC: because fill_input_buffer() blindly copies INPUT_BUF_SIZE bytes,
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// we need to make sure the file buffer is padded or it may crash
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if ( pic ) {
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*pic = NULL; // until proven otherwise
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}
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{
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int len;
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idFile *f;
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f = fileSystem->OpenFileRead( filename );
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if ( !f ) {
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return;
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}
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len = f->Length();
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if ( timestamp ) {
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*timestamp = f->Timestamp();
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}
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if ( !pic ) {
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fileSystem->CloseFile( f );
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return; // just getting timestamp
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}
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fbuffer = (byte *)Mem_ClearedAlloc( len + 4096, TAG_JPG );
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f->Read( fbuffer, len );
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fileSystem->CloseFile( f );
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}
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/* Step 1: allocate and initialize JPEG decompression object */
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/* We have to set up the error handler first, in case the initialization
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* step fails. (Unlikely, but it could happen if you are out of memory.)
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* This routine fills in the contents of struct jerr, and returns jerr's
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* address which we place into the link field in cinfo.
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*/
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cinfo.err = jpeg_std_error(&jerr);
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/* Now we can initialize the JPEG decompression object. */
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jpeg_create_decompress(&cinfo);
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/* Step 2: specify data source (eg, a file) */
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jpeg_stdio_src(&cinfo, fbuffer);
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/* Step 3: read file parameters with jpeg_read_header() */
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(void) jpeg_read_header(&cinfo, true );
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/* We can ignore the return value from jpeg_read_header since
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* (a) suspension is not possible with the stdio data source, and
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* (b) we passed TRUE to reject a tables-only JPEG file as an error.
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* See libjpeg.doc for more info.
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*/
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/* Step 4: set parameters for decompression */
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/* In this example, we don't need to change any of the defaults set by
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* jpeg_read_header(), so we do nothing here.
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*/
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/* Step 5: Start decompressor */
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(void) jpeg_start_decompress(&cinfo);
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/* We can ignore the return value since suspension is not possible
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* with the stdio data source.
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*/
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/* We may need to do some setup of our own at this point before reading
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* the data. After jpeg_start_decompress() we have the correct scaled
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* output image dimensions available, as well as the output colormap
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* if we asked for color quantization.
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* In this example, we need to make an output work buffer of the right size.
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*/
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/* JSAMPLEs per row in output buffer */
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row_stride = cinfo.output_width * cinfo.output_components;
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if (cinfo.output_components!=4) {
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common->DWarning( "JPG %s is unsupported color depth (%d)",
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filename, cinfo.output_components);
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}
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out = (byte *)R_StaticAlloc(cinfo.output_width*cinfo.output_height*4, TAG_IMAGE);
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*pic = out;
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*width = cinfo.output_width;
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*height = cinfo.output_height;
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/* Step 6: while (scan lines remain to be read) */
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/* jpeg_read_scanlines(...); */
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/* Here we use the library's state variable cinfo.output_scanline as the
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* loop counter, so that we don't have to keep track ourselves.
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*/
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while (cinfo.output_scanline < cinfo.output_height) {
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/* jpeg_read_scanlines expects an array of pointers to scanlines.
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* Here the array is only one element long, but you could ask for
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* more than one scanline at a time if that's more convenient.
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*/
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bbuf = ((out+(row_stride*cinfo.output_scanline)));
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buffer = &bbuf;
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(void) jpeg_read_scanlines(&cinfo, buffer, 1);
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}
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// clear all the alphas to 255
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|
{
|
|
int i, j;
|
|
byte *buf;
|
|
|
|
buf = *pic;
|
|
|
|
j = cinfo.output_width * cinfo.output_height * 4;
|
|
for ( i = 3 ; i < j ; i+=4 ) {
|
|
buf[i] = 255;
|
|
}
|
|
}
|
|
|
|
/* Step 7: Finish decompression */
|
|
|
|
(void) jpeg_finish_decompress(&cinfo);
|
|
/* We can ignore the return value since suspension is not possible
|
|
* with the stdio data source.
|
|
*/
|
|
|
|
/* Step 8: Release JPEG decompression object */
|
|
|
|
/* This is an important step since it will release a good deal of memory. */
|
|
jpeg_destroy_decompress(&cinfo);
|
|
|
|
/* After finish_decompress, we can close the input file.
|
|
* Here we postpone it until after no more JPEG errors are possible,
|
|
* so as to simplify the setjmp error logic above. (Actually, I don't
|
|
* think that jpeg_destroy can do an error exit, but why assume anything...)
|
|
*/
|
|
Mem_Free( fbuffer );
|
|
|
|
/* At this point you may want to check to see whether any corrupt-data
|
|
* warnings occurred (test whether jerr.pub.num_warnings is nonzero).
|
|
*/
|
|
|
|
/* And we're done! */
|
|
}
|
|
|
|
//===================================================================
|
|
|
|
/*
|
|
=================
|
|
R_LoadImage
|
|
|
|
Loads any of the supported image types into a cannonical
|
|
32 bit format.
|
|
|
|
Automatically attempts to load .jpg files if .tga files fail to load.
|
|
|
|
*pic will be NULL if the load failed.
|
|
|
|
Anything that is going to make this into a texture would use
|
|
makePowerOf2 = true, but something loading an image as a lookup
|
|
table of some sort would leave it in identity form.
|
|
|
|
It is important to do this at image load time instead of texture load
|
|
time for bump maps.
|
|
|
|
Timestamp may be NULL if the value is going to be ignored
|
|
|
|
If pic is NULL, the image won't actually be loaded, it will just find the
|
|
timestamp.
|
|
=================
|
|
*/
|
|
void R_LoadImage( const char *cname, byte **pic, int *width, int *height, ID_TIME_T *timestamp, bool makePowerOf2 ) {
|
|
idStr name = cname;
|
|
|
|
if ( pic ) {
|
|
*pic = NULL;
|
|
}
|
|
if ( timestamp ) {
|
|
*timestamp = FILE_NOT_FOUND_TIMESTAMP;
|
|
}
|
|
if ( width ) {
|
|
*width = 0;
|
|
}
|
|
if ( height ) {
|
|
*height = 0;
|
|
}
|
|
|
|
name.DefaultFileExtension( ".tga" );
|
|
|
|
if (name.Length()<5) {
|
|
return;
|
|
}
|
|
|
|
name.ToLower();
|
|
idStr ext;
|
|
name.ExtractFileExtension( ext );
|
|
|
|
if ( ext == "tga" ) {
|
|
LoadTGA( name.c_str(), pic, width, height, timestamp ); // try tga first
|
|
if ( ( pic && *pic == 0 ) || ( timestamp && *timestamp == -1 ) ) { //-V595
|
|
name.StripFileExtension();
|
|
name.DefaultFileExtension( ".jpg" );
|
|
LoadJPG( name.c_str(), pic, width, height, timestamp );
|
|
}
|
|
} else if ( ext == "jpg" ) {
|
|
LoadJPG( name.c_str(), pic, width, height, timestamp );
|
|
}
|
|
|
|
if ( ( width && *width < 1 ) || ( height && *height < 1 ) ) {
|
|
if ( pic && *pic ) {
|
|
R_StaticFree( *pic );
|
|
*pic = 0;
|
|
}
|
|
}
|
|
|
|
//
|
|
// convert to exact power of 2 sizes
|
|
//
|
|
/*
|
|
if ( pic && *pic && makePowerOf2 ) {
|
|
int w, h;
|
|
int scaled_width, scaled_height;
|
|
byte *resampledBuffer;
|
|
|
|
w = *width;
|
|
h = *height;
|
|
|
|
for (scaled_width = 1 ; scaled_width < w ; scaled_width<<=1)
|
|
;
|
|
for (scaled_height = 1 ; scaled_height < h ; scaled_height<<=1)
|
|
;
|
|
|
|
if ( scaled_width != w || scaled_height != h ) {
|
|
resampledBuffer = R_ResampleTexture( *pic, w, h, scaled_width, scaled_height );
|
|
R_StaticFree( *pic );
|
|
*pic = resampledBuffer;
|
|
*width = scaled_width;
|
|
*height = scaled_height;
|
|
}
|
|
}
|
|
*/
|
|
}
|
|
|
|
|
|
/*
|
|
=======================
|
|
R_LoadCubeImages
|
|
|
|
Loads six files with proper extensions
|
|
=======================
|
|
*/
|
|
bool R_LoadCubeImages( const char *imgName, cubeFiles_t extensions, byte *pics[6], int *outSize, ID_TIME_T *timestamp ) {
|
|
int i, j;
|
|
char *cameraSides[6] = { "_forward.tga", "_back.tga", "_left.tga", "_right.tga",
|
|
"_up.tga", "_down.tga" };
|
|
char *axisSides[6] = { "_px.tga", "_nx.tga", "_py.tga", "_ny.tga",
|
|
"_pz.tga", "_nz.tga" };
|
|
char **sides;
|
|
char fullName[MAX_IMAGE_NAME];
|
|
int width, height, size = 0;
|
|
|
|
if ( extensions == CF_CAMERA ) {
|
|
sides = cameraSides;
|
|
} else {
|
|
sides = axisSides;
|
|
}
|
|
|
|
// FIXME: precompressed cube map files
|
|
if ( pics ) {
|
|
memset( pics, 0, 6*sizeof(pics[0]) );
|
|
}
|
|
if ( timestamp ) {
|
|
*timestamp = 0;
|
|
}
|
|
|
|
for ( i = 0 ; i < 6 ; i++ ) {
|
|
idStr::snPrintf( fullName, sizeof( fullName ), "%s%s", imgName, sides[i] );
|
|
|
|
ID_TIME_T thisTime;
|
|
if ( !pics ) {
|
|
// just checking timestamps
|
|
R_LoadImageProgram( fullName, NULL, &width, &height, &thisTime );
|
|
} else {
|
|
R_LoadImageProgram( fullName, &pics[i], &width, &height, &thisTime );
|
|
}
|
|
if ( thisTime == FILE_NOT_FOUND_TIMESTAMP ) {
|
|
break;
|
|
}
|
|
if ( i == 0 ) {
|
|
size = width;
|
|
}
|
|
if ( width != size || height != size ) {
|
|
common->Warning( "Mismatched sizes on cube map '%s'", imgName );
|
|
break;
|
|
}
|
|
if ( timestamp ) {
|
|
if ( thisTime > *timestamp ) {
|
|
*timestamp = thisTime;
|
|
}
|
|
}
|
|
if ( pics && extensions == CF_CAMERA ) {
|
|
// convert from "camera" images to native cube map images
|
|
switch( i ) {
|
|
case 0: // forward
|
|
R_RotatePic( pics[i], width);
|
|
break;
|
|
case 1: // back
|
|
R_RotatePic( pics[i], width);
|
|
R_HorizontalFlip( pics[i], width, height );
|
|
R_VerticalFlip( pics[i], width, height );
|
|
break;
|
|
case 2: // left
|
|
R_VerticalFlip( pics[i], width, height );
|
|
break;
|
|
case 3: // right
|
|
R_HorizontalFlip( pics[i], width, height );
|
|
break;
|
|
case 4: // up
|
|
R_RotatePic( pics[i], width);
|
|
break;
|
|
case 5: // down
|
|
R_RotatePic( pics[i], width);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( i != 6 ) {
|
|
// we had an error, so free everything
|
|
if ( pics ) {
|
|
for ( j = 0 ; j < i ; j++ ) {
|
|
R_StaticFree( pics[j] );
|
|
}
|
|
}
|
|
|
|
if ( timestamp ) {
|
|
*timestamp = 0;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if ( outSize ) {
|
|
*outSize = size;
|
|
}
|
|
return true;
|
|
}
|