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https://github.com/Q3Rally-Team/rallyunlimited-engine.git
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1793 lines
40 KiB
C
1793 lines
40 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, 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 Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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// tr_image.c
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#include "tr_local.h"
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static byte s_intensitytable[256];
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static byte s_gammatable[256];
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static byte s_gammatable_linear[256];
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GLint gl_filter_min = GL_LINEAR_MIPMAP_NEAREST;
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GLint gl_filter_max = GL_LINEAR;
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#define FILE_HASH_SIZE 1024
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static image_t* hashTable[FILE_HASH_SIZE];
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/*
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================
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return a hash value for the filename
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================
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*/
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#define generateHashValue(fname) Com_GenerateHashValue((fname),FILE_HASH_SIZE)
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/*
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** R_GammaCorrect
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*/
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void R_GammaCorrect( byte *buffer, int bufSize ) {
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int i;
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if ( fboEnabled )
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return;
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if ( !gls.deviceSupportsGamma )
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return;
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for ( i = 0; i < bufSize; i++ ) {
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buffer[i] = s_gammatable[buffer[i]];
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}
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}
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typedef struct {
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const char *name;
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GLint minimize, maximize;
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} textureMode_t;
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static const textureMode_t modes[] = {
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{"GL_NEAREST", GL_NEAREST, GL_NEAREST},
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{"GL_LINEAR", GL_LINEAR, GL_LINEAR},
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{"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
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{"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
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{"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
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{"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
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};
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/*
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===============
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GL_TextureMode
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===============
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*/
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void GL_TextureMode( const char *string ) {
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const textureMode_t *mode;
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image_t *img;
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int i;
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mode = NULL;
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for ( i = 0 ; i < ARRAY_LEN( modes ) ; i++ ) {
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if ( !Q_stricmp( modes[i].name, string ) ) {
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mode = &modes[i];
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break;
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}
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}
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if ( mode == NULL ) {
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ri.Printf( PRINT_ALL, "bad texture filter name '%s'\n", string );
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return;
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}
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gl_filter_min = mode->minimize;
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gl_filter_max = mode->maximize;
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// hack to prevent trilinear from being set on voodoo,
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// because their driver freaks...
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if ( glConfig.hardwareType == GLHW_3DFX_2D3D && gl_filter_max == GL_LINEAR &&
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gl_filter_min == GL_LINEAR_MIPMAP_LINEAR ) {
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gl_filter_min = GL_LINEAR_MIPMAP_NEAREST;
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ri.Printf( PRINT_ALL, "Refusing to set trilinear on a voodoo.\n" );
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}
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// change all the existing mipmap texture objects
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for ( i = 0; i < tr.numImages; i++ ) {
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img = tr.images[ i ];
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if ( img->flags & IMGFLAG_MIPMAP ) {
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GL_Bind( img );
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qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min );
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qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max );
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}
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}
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}
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/*
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===============
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R_SumOfUsedImages
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===============
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*/
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int R_SumOfUsedImages( void ) {
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const image_t *img;
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int i, total = 0;
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for ( i = 0; i < tr.numImages; i++ ) {
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img = tr.images[ i ];
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if ( img->frameUsed == tr.frameCount ) {
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total += img->uploadWidth * img->uploadHeight;
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}
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}
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return total;
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}
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/*
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===============
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R_ImageList_f
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===============
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*/
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void R_ImageList_f( void ) {
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const image_t *image;
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int i, estTotalSize = 0;
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char *name, buf[MAX_QPATH*2 + 5];
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ri.Printf( PRINT_ALL, "\n -n- --w-- --h-- type -size- --name-------\n" );
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for ( i = 0; i < tr.numImages; i++ )
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{
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const char *format = "???? ";
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const char *sizeSuffix;
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int estSize;
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int displaySize;
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image = tr.images[ i ];
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estSize = image->uploadHeight * image->uploadWidth;
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switch ( image->internalFormat )
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{
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case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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format = "DXT1 ";
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// 64 bits per 16 pixels, so 4 bits per pixel
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estSize /= 2;
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break;
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case GL_RGB4_S3TC:
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format = "S3TC ";
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// same as DXT1?
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estSize /= 2;
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break;
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case GL_RGBA4:
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case GL_RGBA8:
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case GL_RGBA:
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format = "RGBA ";
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// 4 bytes per pixel
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estSize *= 4;
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break;
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case GL_RGB5:
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case GL_RGB8:
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case GL_RGB:
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format = "RGB ";
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// 3 bytes per pixel?
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estSize *= 3;
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break;
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}
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// mipmap adds about 50%
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if (image->flags & IMGFLAG_MIPMAP)
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estSize += estSize / 2;
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sizeSuffix = "b ";
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displaySize = estSize;
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if ( displaySize >= 2048 )
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{
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displaySize = ( displaySize + 1023 ) / 1024;
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sizeSuffix = "kb";
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}
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if ( displaySize >= 2048 )
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{
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displaySize = ( displaySize + 1023 ) / 1024;
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sizeSuffix = "Mb";
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}
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if ( displaySize >= 2048 )
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{
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displaySize = ( displaySize + 1023 ) / 1024;
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sizeSuffix = "Gb";
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}
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if ( Q_stricmp( image->imgName, image->imgName2 ) == 0 ) {
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name = image->imgName;
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} else {
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Com_sprintf( buf, sizeof( buf ), "%s => " S_COLOR_YELLOW "%s",
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image->imgName, image->imgName2 );
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name = buf;
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}
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ri.Printf( PRINT_ALL, " %3i %5i %5i %s %4i%s %s\n", i, image->uploadWidth, image->uploadHeight, format, displaySize, sizeSuffix, name );
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estTotalSize += estSize;
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}
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ri.Printf( PRINT_ALL, " -----------------------\n" );
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ri.Printf( PRINT_ALL, " approx %i kbytes\n", (estTotalSize + 1023) / 1024 );
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ri.Printf( PRINT_ALL, " %i total images\n\n", tr.numImages );
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}
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//=======================================================================
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/*
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================
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ResampleTexture
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Used to resample images in a more general than quartering fashion.
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This will only be filtered properly if the resampled size
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is greater than half the original size.
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If a larger shrinking is needed, use the mipmap function
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before or after.
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================
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*/
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static void ResampleTexture( unsigned *in, int inwidth, int inheight, unsigned *out,
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int outwidth, int outheight ) {
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int i, j;
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unsigned *inrow, *inrow2;
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unsigned frac, fracstep;
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unsigned p1[MAX_TEXTURE_SIZE];
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unsigned p2[MAX_TEXTURE_SIZE];
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byte *pix1, *pix2, *pix3, *pix4;
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if ( outwidth > ARRAY_LEN( p1 ) )
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ri.Error( ERR_DROP, "ResampleTexture: max width" );
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fracstep = inwidth * 0x10000 / outwidth;
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frac = fracstep>>2;
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for ( i=0 ; i<outwidth ; i++ ) {
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p1[i] = 4*(frac>>16);
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frac += fracstep;
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}
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frac = 3*(fracstep>>2);
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for ( i=0 ; i<outwidth ; i++ ) {
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p2[i] = 4*(frac>>16);
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frac += fracstep;
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}
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for (i=0 ; i<outheight ; i++, out += outwidth) {
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inrow = in + inwidth*(int)((i+0.25)*inheight/outheight);
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inrow2 = in + inwidth*(int)((i+0.75)*inheight/outheight);
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for (j=0 ; j<outwidth ; j++) {
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pix1 = (byte *)inrow + p1[j];
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pix2 = (byte *)inrow + p2[j];
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pix3 = (byte *)inrow2 + p1[j];
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pix4 = (byte *)inrow2 + p2[j];
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((byte *)(out+j))[0] = (pix1[0] + pix2[0] + pix3[0] + pix4[0])>>2;
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((byte *)(out+j))[1] = (pix1[1] + pix2[1] + pix3[1] + pix4[1])>>2;
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((byte *)(out+j))[2] = (pix1[2] + pix2[2] + pix3[2] + pix4[2])>>2;
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((byte *)(out+j))[3] = (pix1[3] + pix2[3] + pix3[3] + pix4[3])>>2;
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}
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}
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}
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/*
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================
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R_LightScaleTexture
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Scale up the pixel values in a texture to increase the
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lighting range
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================
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*/
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static void R_LightScaleTexture( byte *in, int inwidth, int inheight, qboolean only_gamma )
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{
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if ( in == NULL )
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return;
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if ( only_gamma )
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{
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if ( !glConfig.deviceSupportsGamma && !fboEnabled )
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{
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int i, c;
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byte *p;
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p = (byte *)in;
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c = inwidth*inheight;
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for (i=0 ; i<c ; i++, p+=4)
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{
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p[0] = s_gammatable[p[0]];
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p[1] = s_gammatable[p[1]];
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p[2] = s_gammatable[p[2]];
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}
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}
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}
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else
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{
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int i, c;
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byte *p;
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p = (byte *)in;
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c = inwidth*inheight;
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if ( glConfig.deviceSupportsGamma || fboEnabled )
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{
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for (i=0 ; i<c ; i++, p+=4)
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{
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p[0] = s_intensitytable[p[0]];
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p[1] = s_intensitytable[p[1]];
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p[2] = s_intensitytable[p[2]];
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}
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}
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else
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{
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for (i=0 ; i<c ; i++, p+=4)
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{
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p[0] = s_gammatable[s_intensitytable[p[0]]];
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p[1] = s_gammatable[s_intensitytable[p[1]]];
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p[2] = s_gammatable[s_intensitytable[p[2]]];
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}
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}
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}
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}
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/*
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================
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R_MipMap2
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Operates in place, quartering the size of the texture
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Proper linear filter
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================
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*/
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static void R_MipMap2( unsigned * const out, unsigned * const in, int inWidth, int inHeight ) {
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int i, j, k;
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byte *outpix;
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int inWidthMask, inHeightMask;
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int total;
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int outWidth, outHeight;
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unsigned *temp;
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outWidth = inWidth >> 1;
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outHeight = inHeight >> 1;
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if ( out == in )
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temp = ri.Hunk_AllocateTempMemory( outWidth * outHeight * 4 );
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else
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temp = out;
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inWidthMask = inWidth - 1;
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inHeightMask = inHeight - 1;
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for ( i = 0 ; i < outHeight ; i++ ) {
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for ( j = 0 ; j < outWidth ; j++ ) {
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outpix = (byte *) ( temp + i * outWidth + j );
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for ( k = 0 ; k < 4 ; k++ ) {
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total =
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1 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] +
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1 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] +
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4 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] +
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4 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] +
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4 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] +
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4 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] +
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1 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] +
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2 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] +
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1 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k];
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outpix[k] = total / 36;
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}
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}
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}
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if ( out == in ) {
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Com_Memcpy( out, temp, outWidth * outHeight * 4 );
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ri.Hunk_FreeTempMemory( temp );
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}
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}
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/*
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================
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R_MipMap
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Operates in place, quartering the size of the texture
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================
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*/
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static void R_MipMap( byte *out, byte *in, int width, int height ) {
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int i, j;
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int row;
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if ( in == NULL )
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return;
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if ( !r_simpleMipMaps->integer ) {
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R_MipMap2( (unsigned *)out, (unsigned *)in, width, height );
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return;
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}
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if ( width == 1 && height == 1 ) {
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return;
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}
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row = width * 4;
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width >>= 1;
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height >>= 1;
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if ( width == 0 || height == 0 ) {
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width += height; // get largest
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for (i=0 ; i<width ; i++, out+=4, in+=8 ) {
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out[0] = ( in[0] + in[4] )>>1;
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out[1] = ( in[1] + in[5] )>>1;
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out[2] = ( in[2] + in[6] )>>1;
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out[3] = ( in[3] + in[7] )>>1;
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}
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return;
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}
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for (i=0 ; i<height ; i++, in+=row) {
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for (j=0 ; j<width ; j++, out+=4, in+=8) {
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out[0] = (in[0] + in[4] + in[row+0] + in[row+4])>>2;
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out[1] = (in[1] + in[5] + in[row+1] + in[row+5])>>2;
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out[2] = (in[2] + in[6] + in[row+2] + in[row+6])>>2;
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out[3] = (in[3] + in[7] + in[row+3] + in[row+7])>>2;
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}
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}
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}
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|
|
|
|
/*
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|
==================
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R_BlendOverTexture
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|
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Apply a color blend over a set of pixels
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|
==================
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|
*/
|
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static void R_BlendOverTexture( byte *data, int pixelCount, int mipLevel ) {
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|
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static const byte blendColors[][4] = {
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{255,0,0,128},
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{255,255,0,128},
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{0,255,0,128},
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{0,255,255,128},
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{0,0,255,128},
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{255,0,255,128}
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};
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const byte *blend;
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int i;
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int inverseAlpha;
|
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int premult[3];
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|
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if ( data == NULL )
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return;
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|
|
if ( mipLevel <= 0 )
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return;
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|
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blend = blendColors[ ( mipLevel - 1 ) % ARRAY_LEN( blendColors ) ];
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|
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inverseAlpha = 255 - blend[3];
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premult[0] = blend[0] * blend[3];
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premult[1] = blend[1] * blend[3];
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premult[2] = blend[2] * blend[3];
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for ( i = 0 ; i < pixelCount ; i++, data+=4 ) {
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data[0] = ( data[0] * inverseAlpha + premult[0] ) >> 9;
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data[1] = ( data[1] * inverseAlpha + premult[1] ) >> 9;
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data[2] = ( data[2] * inverseAlpha + premult[2] ) >> 9;
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}
|
|
}
|
|
|
|
|
|
static qboolean RawImage_HasAlpha( const byte *scan, const int numPixels )
|
|
{
|
|
int i;
|
|
|
|
if ( !scan )
|
|
return qtrue;
|
|
|
|
for ( i = 0; i < numPixels; i++ )
|
|
{
|
|
if ( scan[i*4 + 3] != 255 )
|
|
{
|
|
return qtrue;
|
|
}
|
|
}
|
|
|
|
return qfalse;
|
|
}
|
|
|
|
|
|
static GLint RawImage_GetInternalFormat( const byte *scan, int numPixels, qboolean lightMap, qboolean allowCompression )
|
|
{
|
|
GLint internalFormat;
|
|
|
|
if ( lightMap )
|
|
return GL_RGB;
|
|
|
|
if ( RawImage_HasAlpha( scan, numPixels ) )
|
|
{
|
|
if ( r_texturebits->integer == 16 )
|
|
{
|
|
internalFormat = GL_RGBA4;
|
|
}
|
|
else if ( r_texturebits->integer == 32 )
|
|
{
|
|
internalFormat = GL_RGBA8;
|
|
}
|
|
else
|
|
{
|
|
internalFormat = GL_RGBA;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( allowCompression && glConfig.textureCompression == TC_S3TC_ARB )
|
|
{
|
|
internalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
|
|
}
|
|
else if ( allowCompression && glConfig.textureCompression == TC_S3TC )
|
|
{
|
|
internalFormat = GL_RGB4_S3TC;
|
|
}
|
|
else if ( r_texturebits->integer == 16 )
|
|
{
|
|
internalFormat = GL_RGB5;
|
|
}
|
|
else if ( r_texturebits->integer == 32 )
|
|
{
|
|
internalFormat = GL_RGB8;
|
|
}
|
|
else
|
|
{
|
|
internalFormat = GL_RGB;
|
|
}
|
|
}
|
|
|
|
return internalFormat;
|
|
}
|
|
|
|
|
|
static void LoadTexture( int miplevel, int x, int y, int width, int height, const byte *data, qboolean subImage, image_t *image )
|
|
{
|
|
if ( subImage )
|
|
qglTexSubImage2D( GL_TEXTURE_2D, miplevel, x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data );
|
|
else
|
|
qglTexImage2D( GL_TEXTURE_2D, miplevel, image->internalFormat, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data );
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
Upload32
|
|
===============
|
|
*/
|
|
static void Upload32( byte *data, int x, int y, int width, int height, image_t *image, qboolean subImage )
|
|
{
|
|
qboolean allowCompression = !(image->flags & IMGFLAG_NO_COMPRESSION);
|
|
qboolean lightMap = image->flags & IMGFLAG_LIGHTMAP;
|
|
qboolean mipmap = image->flags & IMGFLAG_MIPMAP;
|
|
qboolean picmip = image->flags & IMGFLAG_PICMIP;
|
|
byte *resampledBuffer = NULL;
|
|
int scaled_width, scaled_height;
|
|
|
|
if ( image->flags & IMGFLAG_NOSCALE ) {
|
|
//
|
|
// keep original dimensions
|
|
//
|
|
scaled_width = width;
|
|
scaled_height = height;
|
|
} else {
|
|
//
|
|
// convert to exact power of 2 sizes
|
|
//
|
|
for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
|
|
;
|
|
for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
|
|
;
|
|
|
|
if ( r_roundImagesDown->integer && scaled_width > width )
|
|
scaled_width >>= 1;
|
|
if ( r_roundImagesDown->integer && scaled_height > height )
|
|
scaled_height >>= 1;
|
|
}
|
|
|
|
//
|
|
// clamp to the current texture size limit
|
|
// scale both axis down equally so we don't have to
|
|
// deal with a half mip resampling
|
|
//
|
|
while ( scaled_width > glConfig.maxTextureSize
|
|
|| scaled_height > glConfig.maxTextureSize ) {
|
|
scaled_width >>= 1;
|
|
scaled_height >>= 1;
|
|
x >>= 1;
|
|
y >>= 1;
|
|
}
|
|
|
|
if ( scaled_width != width || scaled_height != height ) {
|
|
if ( data ) {
|
|
resampledBuffer = ri.Hunk_AllocateTempMemory( scaled_width * scaled_height * 4 );
|
|
ResampleTexture( (unsigned*)data, width, height, (unsigned*)resampledBuffer, scaled_width, scaled_height );
|
|
data = resampledBuffer;
|
|
}
|
|
width = scaled_width;
|
|
height = scaled_height;
|
|
}
|
|
|
|
if ( image->flags & IMGFLAG_COLORSHIFT ) {
|
|
byte *p = data;
|
|
int i, n = width * height;
|
|
for ( i = 0; i < n; i++, p+=4 ) {
|
|
R_ColorShiftLightingBytes( p, p, qfalse );
|
|
}
|
|
}
|
|
|
|
//
|
|
// perform optional picmip operation
|
|
//
|
|
if ( picmip && ( tr.mapLoading || r_nomip->integer == 0 ) ) {
|
|
scaled_width >>= r_picmip->integer;
|
|
scaled_height >>= r_picmip->integer;
|
|
x >>= r_picmip->integer;
|
|
y >>= r_picmip->integer;
|
|
}
|
|
|
|
//
|
|
// clamp to minimum size
|
|
//
|
|
if (scaled_width < 1) {
|
|
scaled_width = 1;
|
|
}
|
|
if (scaled_height < 1) {
|
|
scaled_height = 1;
|
|
}
|
|
|
|
if ( !subImage ) {
|
|
// verify if the alpha channel is being used or not
|
|
if ( image->internalFormat == 0 ) {
|
|
image->internalFormat = RawImage_GetInternalFormat( data, width*height, lightMap, allowCompression );
|
|
}
|
|
image->uploadWidth = scaled_width;
|
|
image->uploadHeight = scaled_height;
|
|
}
|
|
|
|
// copy or resample data as appropriate for first MIP level
|
|
if ( ( scaled_width == width ) && ( scaled_height == height ) )
|
|
{
|
|
if ( !mipmap )
|
|
{
|
|
LoadTexture( 0, x, y, scaled_width, scaled_height, data, subImage, image );
|
|
goto done;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// use the normal mip-mapping function to go down from here
|
|
while ( width > scaled_width || height > scaled_height ) {
|
|
R_MipMap( data, data, width, height );
|
|
width = MAX( 1, width >> 1 );
|
|
height = MAX( 1, height >> 1 );
|
|
}
|
|
}
|
|
|
|
if ( !(image->flags & IMGFLAG_NOLIGHTSCALE) )
|
|
R_LightScaleTexture( data, scaled_width, scaled_height, !mipmap );
|
|
|
|
LoadTexture( 0, x, y, scaled_width, scaled_height, data, subImage, image );
|
|
|
|
if ( mipmap )
|
|
{
|
|
int miplevel = 0;
|
|
while (scaled_width > 1 || scaled_height > 1)
|
|
{
|
|
R_MipMap( data, data, scaled_width, scaled_height );
|
|
scaled_width = MAX( 1, scaled_width >> 1 );
|
|
scaled_height = MAX( 1, scaled_height >> 1 );
|
|
x >>= 1;
|
|
y >>= 1;
|
|
miplevel++;
|
|
|
|
if ( r_colorMipLevels->integer ) {
|
|
R_BlendOverTexture( data, scaled_width * scaled_height, miplevel );
|
|
}
|
|
|
|
LoadTexture( miplevel, x, y, scaled_width, scaled_height, data, subImage, image );
|
|
}
|
|
}
|
|
done:
|
|
if ( resampledBuffer != NULL )
|
|
ri.Hunk_FreeTempMemory( resampledBuffer );
|
|
|
|
GL_CheckErrors();
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_UploadSubImage
|
|
================
|
|
*/
|
|
void R_UploadSubImage( byte *data, int x, int y, int width, int height, image_t *image )
|
|
{
|
|
if ( image )
|
|
{
|
|
GL_Bind( image );
|
|
Upload32( data, x, y, width, height, image, qtrue ); // subImage = qtrue
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_CreateImage
|
|
|
|
This is the only way any image_t are created
|
|
Picture data may be modified in-place during mipmap processing
|
|
================
|
|
*/
|
|
image_t *R_CreateImage( const char *name, const char *name2, byte *pic, int width, int height, imgFlags_t flags ) {
|
|
image_t *image;
|
|
long hash;
|
|
GLint glWrapClampMode;
|
|
GLuint currTexture;
|
|
int currTMU;
|
|
int namelen, namelen2;
|
|
const char *slash;
|
|
|
|
namelen = (int)strlen( name ) + 1;
|
|
if ( namelen > MAX_QPATH ) {
|
|
ri.Error( ERR_DROP, "R_CreateImage: \"%s\" is too long", name );
|
|
}
|
|
|
|
if ( name2 && Q_stricmp( name, name2 ) != 0 ) {
|
|
// leave only file name
|
|
name2 = ( slash = strrchr( name2, '/' ) ) != NULL ? slash + 1 : name2;
|
|
namelen2 = (int)strlen( name2 ) + 1;
|
|
} else {
|
|
namelen2 = 0;
|
|
}
|
|
|
|
if ( tr.numImages == MAX_DRAWIMAGES ) {
|
|
ri.Error( ERR_DROP, "R_CreateImage: MAX_DRAWIMAGES hit" );
|
|
}
|
|
|
|
image = ri.Hunk_Alloc( sizeof( *image ) + namelen + namelen2, h_low );
|
|
image->imgName = (char *)( image + 1 );
|
|
strcpy( image->imgName, name );
|
|
if ( namelen2 ) {
|
|
image->imgName2 = image->imgName + namelen;
|
|
strcpy( image->imgName2, name2 );
|
|
} else {
|
|
image->imgName2 = image->imgName;
|
|
}
|
|
|
|
hash = generateHashValue( name );
|
|
image->next = hashTable[ hash ];
|
|
hashTable[ hash ] = image;
|
|
|
|
tr.images[ tr.numImages++ ] = image;
|
|
|
|
image->flags = flags;
|
|
image->width = width;
|
|
image->height = height;
|
|
|
|
if ( namelen > 6 && Q_stristr( image->imgName, "maps/" ) == image->imgName && Q_stristr( image->imgName + 6, "/lm_" ) != NULL ) {
|
|
// external lightmap atlases stored in maps/<mapname>/lm_XXXX textures
|
|
//image->flags = IMGFLAG_NOLIGHTSCALE | IMGFLAG_NO_COMPRESSION | IMGFLAG_NOSCALE | IMGFLAG_COLORSHIFT;
|
|
image->flags |= IMGFLAG_NO_COMPRESSION | IMGFLAG_NOSCALE;
|
|
}
|
|
|
|
if ( flags & IMGFLAG_RGB )
|
|
image->internalFormat = GL_RGB;
|
|
else
|
|
image->internalFormat = 0; // autodetect
|
|
|
|
if ( flags & IMGFLAG_CLAMPTOBORDER )
|
|
glWrapClampMode = GL_CLAMP_TO_BORDER;
|
|
else if ( flags & IMGFLAG_CLAMPTOEDGE )
|
|
glWrapClampMode = gl_clamp_mode;
|
|
else
|
|
glWrapClampMode = GL_REPEAT;
|
|
|
|
// save current state
|
|
currTMU = glState.currenttmu;
|
|
currTexture = glState.currenttextures[ glState.currenttmu ];
|
|
|
|
qglGenTextures( 1, &image->texnum );
|
|
|
|
// lightmaps are always allocated on TMU 1
|
|
if ( qglActiveTextureARB && (flags & IMGFLAG_LIGHTMAP) ) {
|
|
image->TMU = 1;
|
|
} else {
|
|
image->TMU = 0;
|
|
}
|
|
|
|
if ( qglActiveTextureARB ) {
|
|
GL_SelectTexture( image->TMU );
|
|
}
|
|
|
|
GL_Bind( image );
|
|
Upload32( pic, 0, 0, image->width, image->height, image, qfalse ); // subImage = qfalse
|
|
|
|
if ( image->flags & IMGFLAG_MIPMAP )
|
|
{
|
|
if ( textureFilterAnisotropic ) {
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (GLint) maxAnisotropy );
|
|
}
|
|
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min );
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max );
|
|
}
|
|
else
|
|
{
|
|
if ( textureFilterAnisotropic )
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1 );
|
|
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
|
|
}
|
|
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glWrapClampMode );
|
|
qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glWrapClampMode );
|
|
|
|
// restore original state
|
|
GL_SelectTexture( currTMU );
|
|
glState.currenttextures[ glState.currenttmu ] = currTexture;
|
|
qglBindTexture( GL_TEXTURE_2D, currTexture );
|
|
|
|
return image;
|
|
}
|
|
|
|
//===================================================================
|
|
|
|
typedef struct
|
|
{
|
|
const char *ext;
|
|
void (*ImageLoader)( const char *, unsigned char **, int *, int * );
|
|
} imageExtToLoaderMap_t;
|
|
|
|
// Note that the ordering indicates the order of preference used
|
|
// when there are multiple images of different formats available
|
|
static const imageExtToLoaderMap_t imageLoaders[] =
|
|
{
|
|
{ "png", R_LoadPNG },
|
|
{ "tga", R_LoadTGA },
|
|
{ "jpg", R_LoadJPG },
|
|
{ "jpeg", R_LoadJPG },
|
|
{ "pcx", R_LoadPCX },
|
|
{ "bmp", R_LoadBMP }
|
|
};
|
|
|
|
static const int numImageLoaders = ARRAY_LEN( imageLoaders );
|
|
|
|
/*
|
|
=================
|
|
R_LoadImage
|
|
|
|
Loads any of the supported image types into a canonical
|
|
32 bit format.
|
|
=================
|
|
*/
|
|
static const char *R_LoadImage( const char *name, byte **pic, int *width, int *height )
|
|
{
|
|
static char localName[ MAX_QPATH ];
|
|
const char *altName, *ext;
|
|
//qboolean orgNameFailed = qfalse;
|
|
int orgLoader = -1;
|
|
int i;
|
|
|
|
*pic = NULL;
|
|
*width = 0;
|
|
*height = 0;
|
|
|
|
Q_strncpyz( localName, name, sizeof( localName ) );
|
|
|
|
ext = COM_GetExtension( localName );
|
|
if ( *ext )
|
|
{
|
|
// Look for the correct loader and use it
|
|
for ( i = 0; i < numImageLoaders; i++ )
|
|
{
|
|
if ( !Q_stricmp( ext, imageLoaders[ i ].ext ) )
|
|
{
|
|
// Load
|
|
imageLoaders[ i ].ImageLoader( localName, pic, width, height );
|
|
break;
|
|
}
|
|
}
|
|
|
|
// A loader was found
|
|
if ( i < numImageLoaders )
|
|
{
|
|
if ( *pic == NULL )
|
|
{
|
|
// Loader failed, most likely because the file isn't there;
|
|
// try again without the extension
|
|
//orgNameFailed = qtrue;
|
|
orgLoader = i;
|
|
COM_StripExtension( name, localName, MAX_QPATH );
|
|
}
|
|
else
|
|
{
|
|
// Something loaded
|
|
return localName;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Try and find a suitable match using all
|
|
// the image formats supported
|
|
for ( i = 0; i < numImageLoaders; i++ )
|
|
{
|
|
if ( i == orgLoader )
|
|
continue;
|
|
|
|
altName = va( "%s.%s", localName, imageLoaders[ i ].ext );
|
|
|
|
// Load
|
|
imageLoaders[ i ].ImageLoader( altName, pic, width, height );
|
|
|
|
if ( *pic )
|
|
{
|
|
#if 0
|
|
if ( orgNameFailed )
|
|
{
|
|
ri.Printf( PRINT_DEVELOPER, S_COLOR_YELLOW "WARNING: %s not present, using %s instead\n",
|
|
name, altName );
|
|
}
|
|
#endif
|
|
Q_strncpyz( localName, altName, sizeof( localName ) );
|
|
break;
|
|
}
|
|
}
|
|
|
|
return localName;
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_FindImageFile
|
|
|
|
Finds or loads the given image.
|
|
Returns NULL if it fails, not a default image.
|
|
==============
|
|
*/
|
|
image_t *R_FindImageFile( const char *name, imgFlags_t flags )
|
|
{
|
|
image_t *image;
|
|
const char *localName;
|
|
char strippedName[ MAX_QPATH ];
|
|
int width, height;
|
|
byte *pic;
|
|
int hash;
|
|
|
|
if ( !name ) {
|
|
return NULL;
|
|
}
|
|
|
|
hash = generateHashValue( name );
|
|
|
|
//
|
|
// see if the image is already loaded
|
|
//
|
|
for ( image = hashTable[ hash ]; image; image = image->next ) {
|
|
if ( !Q_stricmp( name, image->imgName ) ) {
|
|
// the white image can be used with any set of parms, but other mismatches are errors
|
|
if ( strcmp( name, "*white" ) ) {
|
|
if ( image->flags != flags ) {
|
|
ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed flags (%i vs %i)\n", name, image->flags, flags );
|
|
}
|
|
}
|
|
return image;
|
|
}
|
|
}
|
|
|
|
if ( strrchr( name, '.' ) > name ) {
|
|
// try with stripped extension
|
|
COM_StripExtension( name, strippedName, sizeof( strippedName ) );
|
|
for ( image = hashTable[ hash ]; image; image = image->next ) {
|
|
if ( !Q_stricmp( strippedName, image->imgName ) ) {
|
|
//if ( strcmp( strippedName, "*white" ) ) {
|
|
if ( image->flags != flags ) {
|
|
ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed flags (%i vs %i)\n", strippedName, image->flags, flags );
|
|
}
|
|
//}
|
|
return image;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// load the pic from disk
|
|
//
|
|
localName = R_LoadImage( name, &pic, &width, &height );
|
|
if ( pic == NULL ) {
|
|
return NULL;
|
|
}
|
|
|
|
if ( tr.mapLoading && r_mapGreyScale->value > 0 ) {
|
|
byte *img;
|
|
int i;
|
|
for ( i = 0, img = pic; i < width * height; i++, img += 4 ) {
|
|
if ( r_mapGreyScale->integer ) {
|
|
byte luma = LUMA( img[0], img[1], img[2] );
|
|
img[0] = luma;
|
|
img[1] = luma;
|
|
img[2] = luma;
|
|
} else {
|
|
float luma = LUMA( img[0], img[1], img[2] );
|
|
img[0] = LERP( img[0], luma, r_mapGreyScale->value );
|
|
img[1] = LERP( img[1], luma, r_mapGreyScale->value );
|
|
img[2] = LERP( img[2], luma, r_mapGreyScale->value );
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( tr.mapLoading && r_mapColorScale->integer == 1 ) {
|
|
byte *img;
|
|
int i;
|
|
for ( i = 0, img = pic; i < width * height; i++, img += 4 ) {
|
|
float luma = LUMA( img[0], img[1], img[2] );
|
|
img[0] = LERP( img[0], luma, r_mapColorRedT->value );
|
|
img[1] = LERP( img[1], luma, r_mapColorGreenT->value );
|
|
img[2] = LERP( img[2], luma, r_mapColorBlueT->value );
|
|
}
|
|
}
|
|
|
|
image = R_CreateImage( name, localName, pic, width, height, flags );
|
|
ri.Free( pic );
|
|
return image;
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_CreateDlightImage
|
|
================
|
|
*/
|
|
#define DLIGHT_SIZE 16
|
|
static void R_CreateDlightImage( void ) {
|
|
int x,y;
|
|
byte data[DLIGHT_SIZE][DLIGHT_SIZE][4];
|
|
int b;
|
|
|
|
// make a centered inverse-square falloff blob for dynamic lighting
|
|
for (x=0 ; x<DLIGHT_SIZE ; x++) {
|
|
for (y=0 ; y<DLIGHT_SIZE ; y++) {
|
|
float d;
|
|
|
|
d = ( DLIGHT_SIZE/2 - 0.5f - x ) * ( DLIGHT_SIZE/2 - 0.5f - x ) +
|
|
( DLIGHT_SIZE/2 - 0.5f - y ) * ( DLIGHT_SIZE/2 - 0.5f - y );
|
|
b = 4000 / d;
|
|
if (b > 255) {
|
|
b = 255;
|
|
} else if ( b < 75 ) {
|
|
b = 0;
|
|
}
|
|
data[y][x][0] =
|
|
data[y][x][1] =
|
|
data[y][x][2] = b;
|
|
data[y][x][3] = 255;
|
|
}
|
|
}
|
|
tr.dlightImage = R_CreateImage( "*dlight", NULL, (byte*)data, DLIGHT_SIZE, DLIGHT_SIZE, IMGFLAG_CLAMPTOEDGE );
|
|
}
|
|
|
|
|
|
/*
|
|
=================
|
|
R_InitFogTable
|
|
=================
|
|
*/
|
|
void R_InitFogTable( void ) {
|
|
int i;
|
|
float d;
|
|
float exp;
|
|
|
|
exp = 0.5;
|
|
|
|
for ( i = 0 ; i < FOG_TABLE_SIZE ; i++ ) {
|
|
d = powf( (float)i/(FOG_TABLE_SIZE-1), exp );
|
|
|
|
tr.fogTable[i] = d;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_FogFactor
|
|
|
|
Returns a 0.0 to 1.0 fog density value
|
|
This is called for each texel of the fog texture on startup
|
|
and for each vertex of transparent shaders in fog dynamically
|
|
================
|
|
*/
|
|
float R_FogFactor( float s, float t ) {
|
|
float d;
|
|
|
|
s -= 1.0/512;
|
|
if ( s < 0 ) {
|
|
return 0;
|
|
}
|
|
if ( t < 1.0/32 ) {
|
|
return 0;
|
|
}
|
|
if ( t < 31.0/32 ) {
|
|
s *= (t - 1.0f/32.0f) / (30.0f/32.0f);
|
|
}
|
|
|
|
// we need to leave a lot of clamp range
|
|
s *= 8;
|
|
|
|
if ( s > 1.0 ) {
|
|
s = 1.0;
|
|
}
|
|
|
|
d = tr.fogTable[ (uint32_t)(s * (FOG_TABLE_SIZE-1)) ];
|
|
|
|
return d;
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_CreateFogImage
|
|
================
|
|
*/
|
|
#define FOG_S 256
|
|
#define FOG_T 32
|
|
static void R_CreateFogImage( void ) {
|
|
int x,y;
|
|
byte *data;
|
|
float d;
|
|
|
|
data = ri.Hunk_AllocateTempMemory( FOG_S * FOG_T * 4 );
|
|
|
|
// S is distance, T is depth
|
|
for (x=0 ; x<FOG_S ; x++) {
|
|
for (y=0 ; y<FOG_T ; y++) {
|
|
d = R_FogFactor( ( x + 0.5f ) / FOG_S, ( y + 0.5f ) / FOG_T );
|
|
|
|
data[(y*FOG_S+x)*4+0] =
|
|
data[(y*FOG_S+x)*4+1] =
|
|
data[(y*FOG_S+x)*4+2] = 255;
|
|
data[(y*FOG_S+x)*4+3] = 255*d;
|
|
}
|
|
}
|
|
tr.fogImage = R_CreateImage( "*fog", NULL, data, FOG_S, FOG_T, IMGFLAG_CLAMPTOEDGE );
|
|
ri.Hunk_FreeTempMemory( data );
|
|
}
|
|
|
|
|
|
static int Hex( char c )
|
|
{
|
|
if ( c >= '0' && c <= '9' ) {
|
|
return c - '0';
|
|
}
|
|
if ( c >= 'A' && c <= 'F' ) {
|
|
return 10 + c - 'A';
|
|
}
|
|
if ( c >= 'a' && c <= 'f' ) {
|
|
return 10 + c - 'a';
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
R_BuildDefaultImage
|
|
|
|
Create solid color texture from following input formats (hex):
|
|
#rgb
|
|
#rrggbb
|
|
==================
|
|
*/
|
|
#define DEFAULT_SIZE 16
|
|
static qboolean R_BuildDefaultImage( const char *format ) {
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
byte color[4];
|
|
int i, len, hex[6];
|
|
int x, y;
|
|
|
|
if ( *format++ != '#' ) {
|
|
return qfalse;
|
|
}
|
|
|
|
len = (int)strlen( format );
|
|
if ( len <= 0 || len > 6 ) {
|
|
return qfalse;
|
|
}
|
|
|
|
for ( i = 0; i < len; i++ ) {
|
|
hex[i] = Hex( format[i] );
|
|
if ( hex[i] == -1 ) {
|
|
return qfalse;
|
|
}
|
|
}
|
|
|
|
switch ( len ) {
|
|
case 3: // #rgb
|
|
color[0] = hex[0] << 4 | hex[0];
|
|
color[1] = hex[1] << 4 | hex[1];
|
|
color[2] = hex[2] << 4 | hex[2];
|
|
color[3] = 255;
|
|
break;
|
|
case 6: // #rrggbb
|
|
color[0] = hex[0] << 4 | hex[1];
|
|
color[1] = hex[2] << 4 | hex[3];
|
|
color[2] = hex[4] << 4 | hex[5];
|
|
color[3] = 255;
|
|
break;
|
|
default: // unsupported format
|
|
return qfalse;
|
|
}
|
|
|
|
for ( y = 0; y < DEFAULT_SIZE; y++ ) {
|
|
for ( x = 0; x < DEFAULT_SIZE; x++ ) {
|
|
data[x][y][0] = color[0];
|
|
data[x][y][1] = color[1];
|
|
data[x][y][2] = color[2];
|
|
data[x][y][3] = color[3];
|
|
}
|
|
}
|
|
|
|
tr.defaultImage = R_CreateImage( "*default", NULL, (byte *)data, DEFAULT_SIZE, DEFAULT_SIZE, IMGFLAG_MIPMAP );
|
|
|
|
return qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
R_CreateDefaultImage
|
|
==================
|
|
*/
|
|
static void R_CreateDefaultImage( void ) {
|
|
int x;
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
if ( r_defaultImage->string[0] )
|
|
{
|
|
// build from format
|
|
if ( R_BuildDefaultImage( r_defaultImage->string ) )
|
|
return;
|
|
// load from external file
|
|
tr.defaultImage = R_FindImageFile( r_defaultImage->string, IMGFLAG_MIPMAP | IMGFLAG_PICMIP );
|
|
if ( tr.defaultImage )
|
|
return;
|
|
}
|
|
|
|
// the default image will be a box, to allow you to see the mapping coordinates
|
|
Com_Memset( data, 32, sizeof( data ) );
|
|
for ( x = 0 ; x < DEFAULT_SIZE ; x++ ) {
|
|
data[0][x][0] =
|
|
data[0][x][1] =
|
|
data[0][x][2] =
|
|
data[0][x][3] = 255;
|
|
|
|
data[x][0][0] =
|
|
data[x][0][1] =
|
|
data[x][0][2] =
|
|
data[x][0][3] = 255;
|
|
|
|
data[DEFAULT_SIZE-1][x][0] =
|
|
data[DEFAULT_SIZE-1][x][1] =
|
|
data[DEFAULT_SIZE-1][x][2] =
|
|
data[DEFAULT_SIZE-1][x][3] = 255;
|
|
|
|
data[x][DEFAULT_SIZE-1][0] =
|
|
data[x][DEFAULT_SIZE-1][1] =
|
|
data[x][DEFAULT_SIZE-1][2] =
|
|
data[x][DEFAULT_SIZE-1][3] = 255;
|
|
}
|
|
|
|
tr.defaultImage = R_CreateImage( "*default", NULL, (byte *)data, DEFAULT_SIZE, DEFAULT_SIZE, IMGFLAG_MIPMAP );
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
R_CreateBuiltinImages
|
|
==================
|
|
*/
|
|
static void R_CreateBuiltinImages( void ) {
|
|
int x,y;
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
R_CreateDefaultImage();
|
|
|
|
// we use a solid white image instead of disabling texturing
|
|
Com_Memset( data, 255, sizeof( data ) );
|
|
tr.whiteImage = R_CreateImage( "*white", NULL, (byte *)data, 8, 8, IMGFLAG_NONE );
|
|
|
|
// with overbright bits active, we need an image which is some fraction of full color,
|
|
// for default lightmaps, etc
|
|
for (x=0 ; x<DEFAULT_SIZE ; x++) {
|
|
for (y=0 ; y<DEFAULT_SIZE ; y++) {
|
|
data[y][x][0] =
|
|
data[y][x][1] =
|
|
data[y][x][2] = tr.identityLightByte;
|
|
data[y][x][3] = 255;
|
|
}
|
|
}
|
|
|
|
tr.identityLightImage = R_CreateImage( "*identityLight", NULL, (byte *)data, 8, 8, IMGFLAG_NONE );
|
|
|
|
//for ( x = 0; x < ARRAY_LEN( tr.scratchImage ); x++ ) {
|
|
// scratchimage is usually used for cinematic drawing
|
|
//tr.scratchImage[x] = R_CreateImage( "*scratch", NULL, DEFAULT_SIZE, DEFAULT_SIZE,
|
|
// IMGFLAG_PICMIP | IMGFLAG_CLAMPTOEDGE | IMGFLAG_RGB );
|
|
//}
|
|
|
|
R_CreateDlightImage();
|
|
R_CreateFogImage();
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_SetColorMappings
|
|
===============
|
|
*/
|
|
void R_SetColorMappings( void ) {
|
|
int i, j;
|
|
float g;
|
|
int inf;
|
|
int shift;
|
|
qboolean applyGamma;
|
|
|
|
if ( !tr.inited ) {
|
|
// it may be called from window handling functions where gamma flags is now yet known/set
|
|
return;
|
|
}
|
|
|
|
// setup the overbright lighting
|
|
// negative value will force gamma in windowed mode
|
|
tr.overbrightBits = abs( r_overBrightBits->integer );
|
|
|
|
// never overbright in windowed mode
|
|
if ( !glConfig.isFullscreen && r_overBrightBits->integer >= 0 && !fboEnabled ) {
|
|
tr.overbrightBits = 0;
|
|
applyGamma = qfalse;
|
|
} else {
|
|
if ( !glConfig.deviceSupportsGamma && !fboEnabled ) {
|
|
tr.overbrightBits = 0; // need hardware gamma for overbright
|
|
applyGamma = qfalse;
|
|
} else {
|
|
applyGamma = qtrue;
|
|
}
|
|
}
|
|
|
|
// allow 2 overbright bits in 24 bit, but only 1 in 16 bit
|
|
if ( glConfig.colorBits > 16 ) {
|
|
if ( tr.overbrightBits > 2 ) {
|
|
tr.overbrightBits = 2;
|
|
}
|
|
} else {
|
|
if ( tr.overbrightBits > 1 ) {
|
|
tr.overbrightBits = 1;
|
|
}
|
|
}
|
|
if ( tr.overbrightBits < 0 ) {
|
|
tr.overbrightBits = 0;
|
|
}
|
|
|
|
tr.identityLight = 1.0f / ( 1 << tr.overbrightBits );
|
|
tr.identityLightByte = 255 * tr.identityLight;
|
|
|
|
g = r_gamma->value;
|
|
|
|
shift = tr.overbrightBits;
|
|
|
|
for ( i = 0; i < ARRAY_LEN( s_gammatable ); i++ ) {
|
|
if ( g == 1.0f ) {
|
|
inf = i;
|
|
} else {
|
|
inf = 255 * powf( i/255.0f, 1.0f / g ) + 0.5f;
|
|
}
|
|
inf <<= shift;
|
|
if (inf < 0) {
|
|
inf = 0;
|
|
}
|
|
if (inf > 255) {
|
|
inf = 255;
|
|
}
|
|
s_gammatable[i] = inf;
|
|
}
|
|
|
|
for ( i = 0; i < ARRAY_LEN( s_intensitytable ); i++ ) {
|
|
j = i * r_intensity->value;
|
|
if ( j > 255 ) {
|
|
j = 255;
|
|
}
|
|
s_intensitytable[i] = j;
|
|
}
|
|
|
|
if ( gls.deviceSupportsGamma ) {
|
|
if ( fboEnabled )
|
|
ri.GLimp_SetGamma( s_gammatable_linear, s_gammatable_linear, s_gammatable_linear );
|
|
else {
|
|
if ( applyGamma ) {
|
|
ri.GLimp_SetGamma( s_gammatable, s_gammatable, s_gammatable );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_InitImages
|
|
===============
|
|
*/
|
|
void R_InitImages( void ) {
|
|
|
|
// initialize linear gamma table before setting color mappings for the first time
|
|
int i;
|
|
|
|
for ( i = 0; i < 256; i++ )
|
|
s_gammatable_linear[i] = (unsigned char)i;
|
|
|
|
Com_Memset( hashTable, 0, sizeof( hashTable ) );
|
|
|
|
// build brightness translation tables
|
|
R_SetColorMappings();
|
|
|
|
// create default texture and white texture
|
|
R_CreateBuiltinImages();
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_DeleteTextures
|
|
===============
|
|
*/
|
|
void R_DeleteTextures( void ) {
|
|
image_t *img;
|
|
int i;
|
|
|
|
for ( i = 0; i < tr.numImages; i++ ) {
|
|
img = tr.images[ i ];
|
|
qglDeleteTextures( 1, &img->texnum );
|
|
}
|
|
|
|
if ( qglActiveTextureARB ) {
|
|
for ( i = glConfig.numTextureUnits - 1; i >= 0; i-- ) {
|
|
qglActiveTextureARB( GL_TEXTURE0_ARB + i );
|
|
qglBindTexture( GL_TEXTURE_2D, 0 );
|
|
}
|
|
} else {
|
|
qglBindTexture( GL_TEXTURE_2D, 0 );
|
|
}
|
|
|
|
Com_Memset( tr.images, 0, sizeof( tr.images ) );
|
|
Com_Memset( tr.scratchImage, 0, sizeof( tr.scratchImage ) );
|
|
tr.numImages = 0;
|
|
|
|
Com_Memset( glState.currenttextures, 0, sizeof( glState.currenttextures ) );
|
|
}
|
|
|
|
|
|
/*
|
|
============================================================================
|
|
|
|
SKINS
|
|
|
|
============================================================================
|
|
*/
|
|
|
|
/*
|
|
==================
|
|
CommaParse
|
|
|
|
This is unfortunate, but the skin files aren't
|
|
compatible with our normal parsing rules.
|
|
==================
|
|
*/
|
|
static char *CommaParse( const char **data_p ) {
|
|
int c, len;
|
|
const char *data;
|
|
static char com_token[ MAX_TOKEN_CHARS ];
|
|
|
|
data = *data_p;
|
|
com_token[0] = '\0';
|
|
|
|
// make sure incoming data is valid
|
|
if ( !data ) {
|
|
*data_p = NULL;
|
|
return com_token;
|
|
}
|
|
|
|
len = 0;
|
|
|
|
while ( 1 ) {
|
|
// skip whitespace
|
|
while ( (c = *data) <= ' ' ) {
|
|
if ( c == '\0' ) {
|
|
break;
|
|
}
|
|
data++;
|
|
}
|
|
|
|
c = *data;
|
|
|
|
// skip double slash comments
|
|
if ( c == '/' && data[1] == '/' )
|
|
{
|
|
data += 2;
|
|
while ( *data && *data != '\n' ) {
|
|
data++;
|
|
}
|
|
}
|
|
// skip /* */ comments
|
|
else if ( c == '/' && data[1] == '*' )
|
|
{
|
|
data += 2;
|
|
while ( *data && ( *data != '*' || data[1] != '/' ) )
|
|
{
|
|
data++;
|
|
}
|
|
if ( *data )
|
|
{
|
|
data += 2;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( c == '\0' ) {
|
|
return "";
|
|
}
|
|
|
|
// handle quoted strings
|
|
if ( c == '\"' )
|
|
{
|
|
data++;
|
|
while (1)
|
|
{
|
|
c = *data;
|
|
if ( c == '\"' || c == '\0' )
|
|
{
|
|
if ( c == '\"' )
|
|
data++;
|
|
com_token[ len ] = '\0';
|
|
*data_p = data;
|
|
return com_token;
|
|
}
|
|
data++;
|
|
if ( len < MAX_TOKEN_CHARS-1 )
|
|
{
|
|
com_token[ len ] = c;
|
|
len++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// parse a regular word
|
|
do
|
|
{
|
|
if ( len < MAX_TOKEN_CHARS-1 )
|
|
{
|
|
com_token[ len ] = c;
|
|
len++;
|
|
}
|
|
data++;
|
|
c = *data;
|
|
} while ( c > ' ' && c != ',' );
|
|
|
|
com_token[ len ] = '\0';
|
|
|
|
*data_p = data;
|
|
return com_token;
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
RE_RegisterSkin
|
|
===============
|
|
*/
|
|
qhandle_t RE_RegisterSkin( const char *name ) {
|
|
skinSurface_t parseSurfaces[MAX_SKIN_SURFACES];
|
|
qhandle_t hSkin;
|
|
skin_t *skin;
|
|
skinSurface_t *surf;
|
|
union {
|
|
char *c;
|
|
void *v;
|
|
} text;
|
|
const char *text_p;
|
|
const char *token;
|
|
char surfName[MAX_QPATH];
|
|
int totalSurfaces;
|
|
|
|
if ( !name || !name[0] ) {
|
|
ri.Printf( PRINT_DEVELOPER, "Empty name passed to RE_RegisterSkin\n" );
|
|
return 0;
|
|
}
|
|
|
|
if ( strlen( name ) >= MAX_QPATH ) {
|
|
ri.Printf( PRINT_DEVELOPER, "Skin name exceeds MAX_QPATH\n" );
|
|
return 0;
|
|
}
|
|
|
|
|
|
// see if the skin is already loaded
|
|
for ( hSkin = 1; hSkin < tr.numSkins ; hSkin++ ) {
|
|
skin = tr.skins[hSkin];
|
|
if ( !Q_stricmp( skin->name, name ) ) {
|
|
if( skin->numSurfaces == 0 ) {
|
|
return 0; // default skin
|
|
}
|
|
return hSkin;
|
|
}
|
|
}
|
|
|
|
// allocate a new skin
|
|
if ( tr.numSkins == MAX_SKINS ) {
|
|
ri.Printf( PRINT_WARNING, "WARNING: RE_RegisterSkin( '%s' ) MAX_SKINS hit\n", name );
|
|
return 0;
|
|
}
|
|
tr.numSkins++;
|
|
skin = ri.Hunk_Alloc( sizeof( skin_t ), h_low );
|
|
tr.skins[hSkin] = skin;
|
|
Q_strncpyz( skin->name, name, sizeof( skin->name ) );
|
|
skin->numSurfaces = 0;
|
|
|
|
//R_IssuePendingRenderCommands();
|
|
|
|
// If not a .skin file, load as a single shader
|
|
if ( strcmp( name + strlen( name ) - 5, ".skin" ) ) {
|
|
skin->numSurfaces = 1;
|
|
skin->surfaces = ri.Hunk_Alloc( sizeof( skinSurface_t ), h_low );
|
|
skin->surfaces[0].shader = R_FindShader( name, LIGHTMAP_NONE, qtrue );
|
|
return hSkin;
|
|
}
|
|
|
|
// load and parse the skin file
|
|
ri.FS_ReadFile( name, &text.v );
|
|
if ( !text.c ) {
|
|
return 0;
|
|
}
|
|
|
|
totalSurfaces = 0;
|
|
text_p = text.c;
|
|
while ( text_p && *text_p ) {
|
|
// get surface name
|
|
token = CommaParse( &text_p );
|
|
Q_strncpyz( surfName, token, sizeof( surfName ) );
|
|
|
|
if ( !token[0] ) {
|
|
break;
|
|
}
|
|
// lowercase the surface name so skin compares are faster
|
|
Q_strlwr( surfName );
|
|
|
|
if ( *text_p == ',' ) {
|
|
text_p++;
|
|
}
|
|
|
|
if ( strstr( token, "tag_" ) ) {
|
|
continue;
|
|
}
|
|
|
|
// parse the shader name
|
|
token = CommaParse( &text_p );
|
|
|
|
if ( skin->numSurfaces < MAX_SKIN_SURFACES ) {
|
|
surf = &parseSurfaces[skin->numSurfaces];
|
|
Q_strncpyz( surf->name, surfName, sizeof( surf->name ) );
|
|
surf->shader = R_FindShader( token, LIGHTMAP_NONE, qtrue );
|
|
skin->numSurfaces++;
|
|
}
|
|
|
|
totalSurfaces++;
|
|
}
|
|
|
|
ri.FS_FreeFile( text.v );
|
|
|
|
if ( totalSurfaces > MAX_SKIN_SURFACES ) {
|
|
ri.Printf( PRINT_WARNING, "WARNING: Ignoring excess surfaces (found %d, max is %d) in skin '%s'!\n",
|
|
totalSurfaces, MAX_SKIN_SURFACES, name );
|
|
}
|
|
|
|
// never let a skin have 0 shaders
|
|
if ( skin->numSurfaces == 0 ) {
|
|
return 0; // use default skin
|
|
}
|
|
|
|
// copy surfaces to skin
|
|
skin->surfaces = ri.Hunk_Alloc( skin->numSurfaces * sizeof( skinSurface_t ), h_low );
|
|
memcpy( skin->surfaces, parseSurfaces, skin->numSurfaces * sizeof( skinSurface_t ) );
|
|
|
|
return hSkin;
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_InitSkins
|
|
===============
|
|
*/
|
|
void R_InitSkins( void ) {
|
|
skin_t *skin;
|
|
|
|
tr.numSkins = 1;
|
|
|
|
// make the default skin have all default shaders
|
|
skin = tr.skins[0] = ri.Hunk_Alloc( sizeof( skin_t ), h_low );
|
|
Q_strncpyz( skin->name, "<default skin>", sizeof( skin->name ) );
|
|
skin->numSurfaces = 1;
|
|
skin->surfaces = ri.Hunk_Alloc( sizeof( skinSurface_t ), h_low );
|
|
skin->surfaces[0].shader = tr.defaultShader;
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_GetSkinByHandle
|
|
===============
|
|
*/
|
|
skin_t *R_GetSkinByHandle( qhandle_t hSkin ) {
|
|
if ( hSkin < 1 || hSkin >= tr.numSkins ) {
|
|
return tr.skins[0];
|
|
}
|
|
return tr.skins[ hSkin ];
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
R_SkinList_f
|
|
===============
|
|
*/
|
|
void R_SkinList_f( void ) {
|
|
int i, j;
|
|
skin_t *skin;
|
|
|
|
ri.Printf (PRINT_ALL, "------------------\n");
|
|
|
|
for ( i = 0 ; i < tr.numSkins ; i++ ) {
|
|
skin = tr.skins[i];
|
|
|
|
ri.Printf( PRINT_ALL, "%3i:%s (%d surfaces)\n", i, skin->name, skin->numSurfaces );
|
|
for ( j = 0 ; j < skin->numSurfaces ; j++ ) {
|
|
ri.Printf( PRINT_ALL, " %s = %s\n",
|
|
skin->surfaces[j].name, skin->surfaces[j].shader->name );
|
|
}
|
|
}
|
|
ri.Printf (PRINT_ALL, "------------------\n");
|
|
}
|