gl_rmisc.c

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/*
Copyright (C) 1997-2001 Id Software, Inc.
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
 
See the GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
*/
// r_misc.c
 
#include "gl_local.h"
 
/*
==================
R_InitParticleTexture
==================
*/
byte    dottexture[8][8] =
{
    {0,0,0,0,0,0,0,0},
    {0,0,1,1,0,0,0,0},
    {0,1,1,1,1,0,0,0},
    {0,1,1,1,1,0,0,0},
    {0,0,1,1,0,0,0,0},
    {0,0,0,0,0,0,0,0},
    {0,0,0,0,0,0,0,0},
    {0,0,0,0,0,0,0,0},
};
 
void R_InitParticleTexture (void)
{
    int     x,y;
    byte    data[8][8][4];
 
    //
    // particle texture
    //
    for (x=0 ; x<8 ; x++)
    {
        for (y=0 ; y<8 ; y++)
        {
            data[y][x][0] = 255;
            data[y][x][1] = 255;
            data[y][x][2] = 255;
            data[y][x][3] = dottexture[x][y]*255;
        }
    }
    r_particletexture = GL_LoadPic ("***particle***", (byte *)data, 8, 8, it_sprite, 32);
 
    //
    // also use this for bad textures, but without alpha
    //
    for (x=0 ; x<8 ; x++)
    {
        for (y=0 ; y<8 ; y++)
        {
            data[y][x][0] = dottexture[x&3][y&3]*255;
            data[y][x][1] = 0; // dottexture[x&3][y&3]*255;
            data[y][x][2] = 0; //dottexture[x&3][y&3]*255;
            data[y][x][3] = 255;
        }
    }
    r_notexture = GL_LoadPic ("***r_notexture***", (byte *)data, 8, 8, it_wall, 32);
}
 
 
/* 
============================================================================== 
 
                        SCREEN SHOTS 
 
============================================================================== 
*/ 
 
typedef struct _TargaHeader {
    unsigned char   id_length, colormap_type, image_type;
    unsigned short  colormap_index, colormap_length;
    unsigned char   colormap_size;
    unsigned short  x_origin, y_origin, width, height;
    unsigned char   pixel_size, attributes;
} TargaHeader;
 
 
/* 
================== 
GL_ScreenShot_f
================== 
*/  
void GL_ScreenShot_f (void) 
{
    byte        *buffer;
    char        picname[80]; 
    char        checkname[MAX_OSPATH];
    int         i, c, temp;
    FILE        *f;
 
    // create the scrnshots directory if it doesn't exist
    Com_sprintf (checkname, sizeof(checkname), "%s/scrnshot", ri.FS_Gamedir());
    Sys_Mkdir (checkname);
 
// 
// find a file name to save it to 
// 
    strcpy(picname,"quake00.tga");
 
    for (i=0 ; i<=99 ; i++) 
    { 
        picname[5] = i/10 + '0'; 
        picname[6] = i%10 + '0'; 
        Com_sprintf (checkname, sizeof(checkname), "%s/scrnshot/%s", ri.FS_Gamedir(), picname);
        f = fopen (checkname, "rb");
        if (!f)
            break;  // file doesn't exist
        fclose (f);
    } 
    if (i==100) 
    {
        ri.Con_Printf (PRINT_ALL, "SCR_ScreenShot_f: Couldn't create a file\n"); 
        return;
    }
 
 
    buffer = malloc(vid.width*vid.height*3 + 18);
    memset (buffer, 0, 18);
    buffer[2] = 2;      // uncompressed type
    buffer[12] = vid.width&255;
    buffer[13] = vid.width>>8;
    buffer[14] = vid.height&255;
    buffer[15] = vid.height>>8;
    buffer[16] = 24;    // pixel size
 
    qglReadPixels (0, 0, vid.width, vid.height, GL_RGB, GL_UNSIGNED_BYTE, buffer+18 ); 
 
    // swap rgb to bgr
    c = 18+vid.width*vid.height*3;
    for (i=18 ; i<c ; i+=3)
    {
        temp = buffer[i];
        buffer[i] = buffer[i+2];
        buffer[i+2] = temp;
    }
 
    f = fopen (checkname, "wb");
    fwrite (buffer, 1, c, f);
    fclose (f);
 
    free (buffer);
    ri.Con_Printf (PRINT_ALL, "Wrote %s\n", picname);
} 
 
/*
** GL_Strings_f
*/
void GL_Strings_f( void )
{
    ri.Con_Printf (PRINT_ALL, "GL_VENDOR: %s\n", gl_config.vendor_string );
    ri.Con_Printf (PRINT_ALL, "GL_RENDERER: %s\n", gl_config.renderer_string );
    ri.Con_Printf (PRINT_ALL, "GL_VERSION: %s\n", gl_config.version_string );
    ri.Con_Printf (PRINT_ALL, "GL_EXTENSIONS: %s\n", gl_config.extensions_string );
}
 
/*
** GL_SetDefaultState
*/
void GL_SetDefaultState( void )
{
    qglClearColor (1,0, 0.5 , 0.5);
    qglCullFace(GL_FRONT);
    qglEnable(GL_TEXTURE_2D);
 
    qglEnable(GL_ALPHA_TEST);
    qglAlphaFunc(GL_GREATER, 0.666);
 
    qglDisable (GL_DEPTH_TEST);
    qglDisable (GL_CULL_FACE);
    qglDisable (GL_BLEND);
 
    qglColor4f (1,1,1,1);
 
    qglPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
    qglShadeModel (GL_FLAT);
 
    GL_TextureMode( gl_texturemode->string );
    GL_TextureAlphaMode( gl_texturealphamode->string );
    GL_TextureSolidMode( gl_texturesolidmode->string );
 
    qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
    qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
 
    qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 
    qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
    GL_TexEnv( GL_REPLACE );
 
    if ( qglPointParameterfEXT )
    {
        float attenuations[3];
 
        attenuations[0] = gl_particle_att_a->value;
        attenuations[1] = gl_particle_att_b->value;
        attenuations[2] = gl_particle_att_c->value;
 
        qglEnable( GL_POINT_SMOOTH );
        qglPointParameterfEXT( GL_POINT_SIZE_MIN_EXT, gl_particle_min_size->value );
        qglPointParameterfEXT( GL_POINT_SIZE_MAX_EXT, gl_particle_max_size->value );
        qglPointParameterfvEXT( GL_DISTANCE_ATTENUATION_EXT, attenuations );
    }
 
    if ( qglColorTableEXT && gl_ext_palettedtexture->value )
    {
        qglEnable( GL_SHARED_TEXTURE_PALETTE_EXT );
 
        GL_SetTexturePalette( d_8to24table );
    }
 
    GL_UpdateSwapInterval();
}
 
void GL_UpdateSwapInterval( void )
{
    if ( gl_swapinterval->modified )
    {
        gl_swapinterval->modified = false;
 
        if ( !gl_state.stereo_enabled ) 
        {
#ifdef _WIN32
            if ( qwglSwapIntervalEXT )
                qwglSwapIntervalEXT( gl_swapinterval->value );
#endif
        }
    }
}