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glquake/source/gl_draw.c
Ian 0a2aa8795a Add External Texture hack from dquakeplus 
Makes .TGA and .PCX loading for models and sprites work finally
2022-12-21 13:28:34 -05:00

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/*
Copyright (C) 1996-1997 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.
*/
// draw.c -- this is the only file outside the refresh that touches the
// vid buffer
#include "quakedef.h"
#define GL_COLOR_INDEX8_EXT 0x80E5
extern unsigned char d_15to8table[65536];
cvar_t gl_nobind = {"gl_nobind", "0"};
cvar_t gl_max_size = {"gl_max_size", "1024"};
cvar_t gl_picmip = {"gl_picmip", "0"};
byte *draw_chars; // 8*8 graphic characters
qpic_t *sniper_scope;
qpic_t *draw_disc;
qpic_t *draw_backtile;
int translate_texture;
int char_texture;
typedef struct
{
int texnum;
float sl, tl, sh, th;
} glpic_t;
byte conback_buffer[sizeof(qpic_t) + sizeof(glpic_t)];
int gl_lightmap_format = 4;
int gl_solid_format = 3;
int gl_alpha_format = 4;
int gl_filter_min = GL_LINEAR_MIPMAP_NEAREST;
int gl_filter_max = GL_LINEAR;
int texels;
int GL_LoadPicTexture (qpic_t *pic);
//Loading Fill by Crow_bar
float loading_cur_step;
char loading_name[32];
float loading_num_step;
int loading_step;
float loading_cur_step_bk;
typedef struct
{
int texnum;
char identifier[64];
int original_width;
int original_height;
int width, height;
qboolean mipmap;
qboolean islmp;
int checksum;
// Diabolicka TGA
int bytesperpixel;
int lhcsum;
// Diabolickal end
} gltexture_t;
#define MAX_GLTEXTURES 1024
gltexture_t gltextures[MAX_GLTEXTURES];
int numgltextures;
void GL_Bind (int texnum)
{
if (gl_nobind.value)
texnum = char_texture;
if (currenttexture == texnum)
return;
currenttexture = texnum;
glBindTexture(GL_TEXTURE_2D, texnum);
}
/*
=============================================================================
scrap allocation
Allocate all the little status bar obejcts into a single texture
to crutch up stupid hardware / drivers
=============================================================================
*/
#define MAX_SCRAPS 2
#define BLOCK_WIDTH 256
#define BLOCK_HEIGHT 256
int scrap_allocated[MAX_SCRAPS][BLOCK_WIDTH];
byte scrap_texels[MAX_SCRAPS][BLOCK_WIDTH*BLOCK_HEIGHT*4];
qboolean scrap_dirty;
int scrap_texnum;
// returns a texture number and the position inside it
int Scrap_AllocBlock (int w, int h, int *x, int *y)
{
int i, j;
int best, best2;
int texnum;
for (texnum=0 ; texnum<MAX_SCRAPS ; texnum++)
{
best = BLOCK_HEIGHT;
for (i=0 ; i<BLOCK_WIDTH-w ; i++)
{
best2 = 0;
for (j=0 ; j<w ; j++)
{
if (scrap_allocated[texnum][i+j] >= best)
break;
if (scrap_allocated[texnum][i+j] > best2)
best2 = scrap_allocated[texnum][i+j];
}
if (j == w)
{ // this is a valid spot
*x = i;
*y = best = best2;
}
}
if (best + h > BLOCK_HEIGHT)
continue;
for (i=0 ; i<w ; i++)
scrap_allocated[texnum][*x + i] = best + h;
return texnum;
}
Sys_Error ("Scrap_AllocBlock: full");
return 0; // naievil -- will never be reached only for warning removal
}
int scrap_uploads;
void Scrap_Upload (void)
{
int texnum;
scrap_uploads++;
for (texnum=0 ; texnum<MAX_SCRAPS ; texnum++) {
GL_Bind(scrap_texnum + texnum);
GL_Upload8 (scrap_texels[texnum], BLOCK_WIDTH, BLOCK_HEIGHT, false, true);
}
scrap_dirty = false;
}
//=============================================================================
/* Support Routines */
typedef struct cachepic_s
{
char name[MAX_QPATH];
qpic_t pic;
byte padding[32]; // for appended glpic
} cachepic_t;
#define MAX_CACHED_PICS 128
cachepic_t menu_cachepics[MAX_CACHED_PICS];
int menu_numcachepics;
byte menuplyr_pixels[4096];
int pic_texels;
int pic_count;
qpic_t *Draw_PicFromWad (char *name)
{
qpic_t *p;
glpic_t *gl;
p = W_GetLumpName (name);
gl = (glpic_t *)p->data;
// load little ones into the scrap
if (p->width < 64 && p->height < 64)
{
int x=0, y=0;
int i, j, k;
int texnum;
texnum = Scrap_AllocBlock (p->width, p->height, &x, &y);
scrap_dirty = true;
k = 0;
for (i=0 ; i<p->height ; i++)
for (j=0 ; j<p->width ; j++, k++)
scrap_texels[texnum][(y+i)*BLOCK_WIDTH + x + j] = p->data[k];
texnum += scrap_texnum;
gl->texnum = texnum;
gl->sl = (x+0.01)/(float)BLOCK_WIDTH;
gl->sh = (x+p->width-0.01)/(float)BLOCK_WIDTH;
gl->tl = (y+0.01)/(float)BLOCK_WIDTH;
gl->th = (y+p->height-0.01)/(float)BLOCK_WIDTH;
pic_count++;
pic_texels += p->width*p->height;
}
else
{
gl->texnum = GL_LoadPicTexture (p);
gl->sl = 0;
gl->sh = 1;
gl->tl = 0;
gl->th = 1;
}
return p;
}
/*
================
Draw_CachePic
================
*/
qpic_t *Draw_CachePic (char *path)
{
cachepic_t *pic;
int i;
qpic_t *dat;
glpic_t *gl;
char str[128];
strcpy (str, path);
for (pic=menu_cachepics, i=0 ; i<menu_numcachepics ; pic++, i++)
if (!strcmp (str, pic->name))
return &pic->pic;
if (menu_numcachepics == MAX_CACHED_PICS)
Sys_Error ("menu_numcachepics == MAX_CACHED_PICS");
menu_numcachepics++;
strcpy (pic->name, str);
//
// load the pic from disk
//
int index = loadtextureimage (str, 0, 0, qfalse, qfalse);
if(index)
{
pic->pic.width = gltextures[index].original_width;
pic->pic.height = gltextures[index].original_height;
gltextures[index].islmp = qfalse;
gl = (glpic_t *)pic->pic.data;
gl->texnum = index;
return &pic->pic;
}
dat = (qpic_t *)COM_LoadTempFile (str);
if (!dat)
{
strcat (str, ".lmp");
dat = (qpic_t *)COM_LoadTempFile (str);
if (!dat)
{
Con_Printf ("Draw_CachePic: failed to load file %s\n", str);
return NULL;
}
}
SwapPic (dat);
pic->pic.width = dat->width;
pic->pic.height = dat->height;
gl = (glpic_t *)pic->pic.data;
gl->texnum = GL_LoadPicTexture (dat);
gltextures[gl->texnum].islmp = qtrue;
return &pic->pic;
}
typedef struct
{
char *name;
int minimize, maximize;
} glmode_t;
glmode_t modes[] = {
{"GL_NEAREST", GL_NEAREST, GL_NEAREST},
{"GL_LINEAR", GL_LINEAR, GL_LINEAR},
{"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
{"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
{"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
{"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
};
/*
===============
Draw_TextureMode_f
===============
*/
void Draw_TextureMode_f (void)
{
int i;
gltexture_t *glt;
if (Cmd_Argc() == 1)
{
for (i=0 ; i< 6 ; i++)
if (gl_filter_min == modes[i].minimize)
{
Con_Printf ("%s\n", modes[i].name);
return;
}
Con_Printf ("current filter is unknown???\n");
return;
}
for (i=0 ; i< 6 ; i++)
{
if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
break;
}
if (i == 6)
{
Con_Printf ("bad filter name\n");
return;
}
gl_filter_min = modes[i].minimize;
gl_filter_max = modes[i].maximize;
// change all the existing mipmap texture objects
for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
{
if (glt->mipmap)
{
GL_Bind (glt->texnum);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
}
}
}
/*
===============
Draw_Init
===============
*/
void Draw_Init (void)
{
int start;
numgltextures = 0;
Cvar_RegisterVariable (&gl_nobind);
Cvar_RegisterVariable (&gl_max_size);
Cvar_RegisterVariable (&gl_picmip);
// 3dfx can only handle 256 wide textures
if (!Q_strncasecmp ((char *)gl_renderer, "3dfx",4) ||
strstr((char *)gl_renderer, "Glide"))
Cvar_Set ("gl_max_size", "256");
Cmd_AddCommand ("gl_texturemode", &Draw_TextureMode_f);
// now turn them into textures
char_texture = loadtextureimage ("gfx/charset", 0, 0, false, false);
if (char_texture == 0)// did not find a matching TGA...
Sys_Error ("Could not load charset, make sure you have every folder and file installed properly\nDouble check that all of your files are in their correct places\nAnd that you have installed the game properly.\n");
start = Hunk_LowMark();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
// free loaded console
Hunk_FreeToLowMark(start);
// save a texture slot for translated picture
translate_texture = texture_extension_number++;
// save slots for scraps
scrap_texnum = texture_extension_number;
texture_extension_number += MAX_SCRAPS;
//
// get the other pics we need
//
sniper_scope = Draw_CachePic ("gfx/hud/scope");
Clear_LoadingFill ();
}
/*
================
Draw_Character
Draws one 8*8 graphics character with 0 being transparent.
It can be clipped to the top of the screen to allow the console to be
smoothly scrolled off.
================
*/
void Draw_Character (int x, int y, int num)
{
int row, col;
float frow, fcol, size;
if (num == 32)
return; // space
num &= 255;
if (y <= -8)
return; // totally off screen
row = num>>4;
col = num&15;
frow = row*0.0625;
fcol = col*0.0625;
size = 0.0625;
GL_Bind (char_texture);
glEnable(GL_ALPHA_TEST);
glBegin (GL_QUADS);
glTexCoord2f (fcol, frow);
glVertex2f (x, y);
glTexCoord2f (fcol + size, frow);
glVertex2f (x+8, y);
glTexCoord2f (fcol + size, frow + size);
glVertex2f (x+8, y+8);
glTexCoord2f (fcol, frow + size);
glVertex2f (x, y+8);
glEnd ();
glDisable(GL_ALPHA_TEST);
}
/*
================
Draw_CharacterRGBA
This is the same as Draw_Character, but with RGBA color codes.
- MotoLegacy
================
*/
extern cvar_t scr_coloredtext;
void Draw_CharacterRGBA(int x, int y, int num, float r, float g, float b, float a, int scale)
{
int row, col;
float frow, fcol, size;
if (num == 32)
return; // space
num &= 255;
if (y <= -8)
return; // totally off screen
row = num>>4;
col = num&15;
frow = row*0.0625;
fcol = col*0.0625;
size = 0.0625*(float)scale;
GL_Bind (char_texture);
glEnable(GL_ALPHA_TEST);
glColor4f(r/255, g/255, b/255, a/255);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glBegin (GL_QUADS);
glTexCoord2f (fcol, frow);
glVertex2f (x, y);
glTexCoord2f (fcol + (float)(size/(float)scale), frow);
glVertex2f (x+(8*(scale)), y);
glTexCoord2f (fcol + (float)(size/(float)scale), frow + (float)(size/(float)scale));
glVertex2f (x+(8*(scale)), y+(8*(scale)));
glTexCoord2f (fcol, frow + (float)(size/(float)scale));
glVertex2f (x, y+(8*(scale)));
glEnd ();
glColor4f(1,1,1,1);
glDisable(GL_ALPHA_TEST);
}
/*
================
Draw_String
================
*/
void Draw_String (int x, int y, char *str)
{
Draw_ColoredString(x, y, str, 255, 255, 255, 255, 1);
}
void Draw_ColoredString(int x, int y, char *str, float r, float g, float b, float a, int scale)
{
while (*str)
{
Draw_CharacterRGBA (x, y, *str, r, g, b, a, scale);
str++;
x += 8*scale;
}
}
/*
================
Draw_DebugChar
Draws a single character directly to the upper right corner of the screen.
This is for debugging lockups by drawing different chars in different parts
of the code.
================
*/
void Draw_DebugChar (char num)
{
}
/*
=============
Draw_AlphaPic
=============
*/
void Draw_AlphaPic (int x, int y, qpic_t *pic, float alpha)
{
Draw_ColorPic(x, y, pic, 255, 255, 255, alpha);
}
/*
=============
Draw_Pic
=============
*/
void Draw_Pic (int x, int y, qpic_t *pic)
{
Draw_ColorPic(x, y, pic, 255, 255, 255, 255);
}
/*
=============
Draw_StretchPic
=============
*/
void Draw_StretchPic (int x, int y, qpic_t *pic, int x_value, int y_value)
{
glpic_t *gl;
if (scrap_dirty)
Scrap_Upload ();
gl = (glpic_t *)pic->data;
glEnable(GL_ALPHA_TEST);
glColor4f(1,1,1,1);
GL_Bind (gl->texnum);
glBegin (GL_QUADS);
glTexCoord2f (0, 0);
glVertex2f (x, y);
glTexCoord2f (1, 0);
glVertex2f (x+x_value, y);
glTexCoord2f (1, 1);
glVertex2f (x+x_value, y+y_value);
glTexCoord2f (0, 1);
glVertex2f (x, y+y_value);
glEnd ();
glColor4f(1,1,1,1);
}
/*
=============
Draw_ColorPic
=============
*/
void Draw_ColorPic (int x, int y, qpic_t *pic, float r, float g , float b, float a)
{
glpic_t *gl;
if (scrap_dirty)
Scrap_Upload ();
gl = (glpic_t *)pic->data;
// naievil -- this was breaking blood hud
//glEnable(GL_ALPHA_TEST);
glEnable(GL_BLEND);
glColor4f(r/255.0,g/255.0,b/255.0,a/255.0);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
GL_Bind (gl->texnum);
glBegin (GL_QUADS);
glTexCoord2f (0, 0);
glVertex2f (x, y);
glTexCoord2f (1, 0);
glVertex2f (x+pic->width, y);
glTexCoord2f (1, 1);
glVertex2f (x+pic->width, y+pic->height);
glTexCoord2f (0, 1);
glVertex2f (x, y+pic->height);
glEnd ();
glDisable(GL_BLEND);
glColor4f(1,1,1,1);
}
/*
=============
Draw_TransPic
=============
*/
void Draw_TransPic (int x, int y, qpic_t *pic)
{
if (x < 0 || (unsigned)(x + pic->width) > vid.width || y < 0 ||
(unsigned)(y + pic->height) > vid.height)
{
Sys_Error ("Draw_TransPic: bad coordinates");
}
Draw_Pic (x, y, pic);
}
/*
=============
Draw_TransPicTranslate
Only used for the player color selection menu
=============
*/
void Draw_TransPicTranslate (int x, int y, qpic_t *pic, byte *translation)
{
int v, u;
unsigned trans[64*64], *dest;
byte *src;
int p;
GL_Bind (translate_texture);
dest = trans;
for (v=0 ; v<64 ; v++, dest += 64)
{
src = &menuplyr_pixels[ ((v*pic->height)>>6) *pic->width];
for (u=0 ; u<64 ; u++)
{
p = src[(u*pic->width)>>6];
if (p == 255)
dest[u] = p;
else
dest[u] = d_8to24table[translation[p]];
}
}
glTexImage2D (GL_TEXTURE_2D, 0, gl_alpha_format, 64, 64, 0, GL_RGBA, GL_UNSIGNED_BYTE, trans);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glColor3f (1,1,1);
glBegin (GL_QUADS);
glTexCoord2f (0, 0);
glVertex2f (x, y);
glTexCoord2f (1, 0);
glVertex2f (x+pic->width, y);
glTexCoord2f (1, 1);
glVertex2f (x+pic->width, y+pic->height);
glTexCoord2f (0, 1);
glVertex2f (x, y+pic->height);
glEnd ();
}
/*
================
Draw_ConsoleBackground
================
*/
void Draw_ConsoleBackground (int lines)
{
Draw_Fill(0, 0, vid.width, lines, 0, 0, 0, 255);
}
/*
=============
Draw_TileClear
This repeats a 64*64 tile graphic to fill the screen around a sized down
refresh window.
=============
*/
void Draw_TileClear (int x, int y, int w, int h)
{
glColor3f (1,1,1);
GL_Bind (*(int *)draw_backtile->data);
glBegin (GL_QUADS);
glTexCoord2f (x/64.0, y/64.0);
glVertex2f (x, y);
glTexCoord2f ( (x+w)/64.0, y/64.0);
glVertex2f (x+w, y);
glTexCoord2f ( (x+w)/64.0, (y+h)/64.0);
glVertex2f (x+w, y+h);
glTexCoord2f ( x/64.0, (y+h)/64.0 );
glVertex2f (x, y+h);
glEnd ();
}
/*
================
Draw_LoadingFill
By Crow_bar
================
*/
void Draw_LoadingFill(void)
{
if(!loading_num_step)
return;
int size = 8;
int max_step = 350;
int x = (vid.width / 2) - (max_step / 2);
int y = vid.height - (size/ 2) - 25;
int l;
char str[64];
char* text;
if(loading_cur_step > loading_num_step)
loading_cur_step = loading_num_step;
if (loading_cur_step < loading_cur_step_bk)
loading_cur_step = loading_cur_step_bk;
if (loading_cur_step == loading_num_step && loading_cur_step_bk != loading_num_step)
loading_cur_step = loading_cur_step_bk;
float loadsize = loading_cur_step * (max_step / loading_num_step);
Draw_FillByColor (x - 2, y - 2, max_step + 4, size + 4, 69, 69, 69, 255);
Draw_FillByColor (x, y, (int)loadsize, size, 0, 0, 0, 200);
switch(loading_step) {
case 1: text = "Loading Models.."; break;
case 2: text = "Loading World.."; break;
case 3: text = "Running Test Frame.."; break;
case 4: text = "Loading Sounds.."; break;
default: text = "Initializing.."; break;
}
l = strlen (text);
Draw_String((vid.width - l*8)/2, y, text);
loading_cur_step_bk = loading_cur_step;
}
void Clear_LoadingFill (void)
{
//it is end loading
loading_cur_step = 0;
loading_cur_step_bk = 0;
loading_num_step = 0;
loading_step = -1;
memset(loading_name, 0, sizeof(loading_name));
}
/*
=============
Draw_FillByColor
Fills a box of pixels with a single color
=============
*/
void Draw_FillByColor (int x, int y, int w, int h, float r, float g, float b, float a)
{
Draw_Fill(x, y, w, h, r, g, b, a);
}
/*
=============
Draw_Fill
Fills a box of pixels with a single color
=============
*/
void Draw_Fill (int x, int y, int w, int h, float r, float g, float b, float a)
{
glDisable (GL_TEXTURE_2D);
glEnable (GL_ALPHA_TEST);
glColor4f (r/255, g/255, b/255, a/255);
glBegin (GL_QUADS);
glVertex2f (x,y);
glVertex2f (x+w, y);
glVertex2f (x+w, y+h);
glVertex2f (x, y+h);
glEnd ();
glColor4f (1,1,1,1);
glDisable (GL_ALPHA_TEST);
glEnable (GL_TEXTURE_2D);
}
//=============================================================================
byte *StringToRGB (char *s)
{
byte *col;
static byte rgb[4];
Cmd_TokenizeString (s);
if (Cmd_Argc() == 3)
{
rgb[0] = (byte)Q_atoi(Cmd_Argv(0));
rgb[1] = (byte)Q_atoi(Cmd_Argv(1));
rgb[2] = (byte)Q_atoi(Cmd_Argv(2));
}
else
{
col = (byte *)&d_8to24table[(byte)Q_atoi(s)];
rgb[0] = col[0];
rgb[1] = col[1];
rgb[2] = col[2];
}
rgb[3] = 255;
return rgb;
}
extern cvar_t crosshair;
extern qboolean croshhairmoving;
//extern cvar_t cl_zoom;
extern qpic_t *hitmark;
double Hitmark_Time, crosshair_spread_time;
float cur_spread;
float crosshair_offset_step;
int CrossHairWeapon (void)
{
int i;
switch(cl.stats[STAT_ACTIVEWEAPON])
{
case W_COLT:
case W_BIATCH:
i = 15;
break;
case W_KAR:
case W_ARMAGEDDON:
i = 50;
break;
case W_THOMPSON:
case W_GIBS:
i = 10;
break;
case W_357:
case W_KILLU:
i = 10;
break;
case W_BAR:
case W_WIDOW:
i = 10;
break;
case W_BROWNING:
case W_ACCELERATOR:
i = 20;
break;
case W_DB:
case W_BORE:
i = 25;
break;
case W_FG:
case W_IMPELLER:
i = 10;
break;
case W_GEWEHR:
case W_COMPRESSOR:
i = 10;
break;
case W_KAR_SCOPE:
case W_HEADCRACKER:
i = 50;
break;
case W_M1:
case W_M1000:
i = 10;
break;
case W_M1A1:
case W_WIDDER:
i = 10;
break;
case W_MP40:
case W_AFTERBURNER:
i = 10;
break;
case W_MG:
case W_BARRACUDA:
i = 20;
break;
case W_PANZER:
case W_LONGINUS:
i = 0;
break;
case W_PPSH:
case W_REAPER:
i = 10;
break;
case W_PTRS:
case W_PENETRATOR:
i = 50;
break;
case W_RAY:
case W_PORTER:
i = 10;
break;
case W_SAWNOFF:
case W_SNUFF:
i = 30;
break;
case W_STG:
case W_SPATZ:
i = 10;
break;
case W_TRENCH:
case W_GUT:
i = 25;
break;
case W_TYPE:
case W_SAMURAI:
i = 10;
break;
case W_MP5:
i = 10;
break;
case W_TESLA:
i = 0;
break;
default:
i = 0;
break;
}
if (cl.perks & 64)
i *= 0.65;
return i;
}
int CrossHairMaxSpread (void)
{
int i;
switch(cl.stats[STAT_ACTIVEWEAPON])
{
case W_COLT:
case W_BIATCH:
i = 30;
break;
case W_KAR:
case W_ARMAGEDDON:
i = 75;
break;
case W_THOMPSON:
case W_GIBS:
i = 25;
break;
case W_357:
case W_KILLU:
i = 20;
break;
case W_BAR:
case W_WIDOW:
i = 35;
break;
case W_BROWNING:
case W_ACCELERATOR:
i = 50;
break;
case W_DB:
case W_BORE:
i = 25;
break;
case W_FG:
case W_IMPELLER:
i = 40;
break;
case W_GEWEHR:
case W_COMPRESSOR:
i = 35;
break;
case W_KAR_SCOPE:
case W_HEADCRACKER:
i = 75;
break;
case W_M1:
case W_M1000:
i = 35;
break;
case W_M1A1:
case W_WIDDER:
i = 35;
break;
case W_MP40:
case W_AFTERBURNER:
i = 25;
break;
case W_MG:
case W_BARRACUDA:
i = 50;
break;
case W_PANZER:
case W_LONGINUS:
i = 0;
break;
case W_PPSH:
case W_REAPER:
i = 25;
break;
case W_PTRS:
case W_PENETRATOR:
i = 75;
break;
case W_RAY:
case W_PORTER:
i = 20;
break;
case W_SAWNOFF:
case W_SNUFF:
i = 30;
break;
case W_STG:
case W_SPATZ:
i = 35;
break;
case W_TRENCH:
case W_GUT:
i = 25;
break;
case W_TYPE:
case W_SAMURAI:
i = 25;
break;
case W_MP5:
i = 25;
break;
case W_TESLA:
i = 0;
break;
default:
i = 0;
break;
}
if (cl.perks & 64)
i *= 0.65;
return i;
}
/*
================
Draw_Crosshair
================
*/
extern float crosshair_opacity;
void Draw_Crosshair (void)
{
if (cl.stats[STAT_HEALTH] < 20)
return;
if (!crosshair_opacity)
crosshair_opacity = 255;
float col;
if (sv_player->v.facingenemy == 1) {
col = 0;
} else {
col = 255;
}
// crosshair moving
if (crosshair_spread_time > sv.time && crosshair_spread_time)
{
cur_spread = cur_spread + 10;
crosshair_opacity = 128;
if (cur_spread >= CrossHairMaxSpread())
cur_spread = CrossHairMaxSpread();
}
// crosshair not moving
else if (crosshair_spread_time < sv.time && crosshair_spread_time)
{
cur_spread = cur_spread - 4;
crosshair_opacity = 255;
if (cur_spread <= 0) {
cur_spread = 0;
crosshair_spread_time = 0;
}
}
if (cl.stats[STAT_ACTIVEWEAPON] == W_M2 || cl.stats[STAT_ACTIVEWEAPON] == W_TESLA || cl.stats[STAT_ACTIVEWEAPON] == W_DG3)
{
Draw_CharacterRGBA((vid.width)/2-4, (vid.height)/2, 'O', 255, col, col, crosshair_opacity, 1);
}
else if (crosshair.value == 1 && cl.stats[STAT_ZOOM] != 1 && cl.stats[STAT_ZOOM] != 2 && cl.stats[STAT_ACTIVEWEAPON] != W_PANZER)
{
int x_value, y_value;
int crosshair_offset = CrossHairWeapon() + cur_spread;
if (CrossHairMaxSpread() < crosshair_offset || croshhairmoving)
crosshair_offset = CrossHairMaxSpread();
if (sv_player->v.view_ofs[2] == 8) {
crosshair_offset *= 0.80;
} else if (sv_player->v.view_ofs[2] == -10) {
crosshair_offset *= 0.65;
}
crosshair_offset_step += (crosshair_offset - crosshair_offset_step) * 0.5;
x_value = (vid.width - 3)/2 - crosshair_offset_step;
y_value = (vid.height - 1)/2;
Draw_FillByColor(x_value, y_value, 3, 1, 255, (int)col, (int)col, 255);
x_value = (vid.width - 3)/2 + crosshair_offset_step;
y_value = (vid.height - 1)/2;
Draw_FillByColor(x_value, y_value, 3, 1, 255, (int)col, (int)col, 255);
x_value = (vid.width - 1)/2;
y_value = (vid.height - 3)/2 - crosshair_offset_step;
Draw_FillByColor(x_value, y_value, 1, 3, 255, (int)col, (int)col, 255);
x_value = (vid.width - 1)/2;
y_value = (vid.height - 3)/2 + crosshair_offset_step;
Draw_FillByColor(x_value, y_value, 1, 3, 255, (int)col, (int)col, 255);
}
else if (crosshair.value && cl.stats[STAT_ZOOM] != 1 && cl.stats[STAT_ZOOM] != 2)
Draw_CharacterRGBA((vid.width - 8)/2, (vid.height - 8)/2, '.', 255, col, col, crosshair_opacity, 1);
if (cl.stats[STAT_ZOOM] == 2)
Draw_Pic (-39, -15, sniper_scope);
if (Hitmark_Time > sv.time)
Draw_Pic ((vid.width - hitmark->width)/2,(vid.height - hitmark->height)/2, hitmark);
}
/*
================
Draw_FadeScreen
================
*/
void Draw_FadeScreen (void)
{
glEnable (GL_BLEND);
glDisable (GL_TEXTURE_2D);
glColor4f (0, 0, 0, 0.8);
glBegin (GL_QUADS);
glVertex2f (0,0);
glVertex2f (vid.width, 0);
glVertex2f (vid.width, vid.height);
glVertex2f (0, vid.height);
glEnd ();
glColor4f (1,1,1,1);
glEnable (GL_TEXTURE_2D);
glDisable (GL_BLEND);
Sbar_Changed();
}
//=============================================================================
/*
================
Draw_BeginDisc
Draws the little blue disc in the corner of the screen.
Call before beginning any disc IO.
================
*/
void Draw_BeginDisc (void)
{
if (!draw_disc)
return;
glDrawBuffer (GL_FRONT);
Draw_Pic (vid.width - 24, 0, draw_disc);
glDrawBuffer (GL_BACK);
}
/*
================
Draw_EndDisc
Erases the disc icon.
Call after completing any disc IO
================
*/
void Draw_EndDisc (void)
{
}
/*
================
GL_Set2D
Setup as if the screen was 320*200
================
*/
void GL_Set2D (void)
{
glViewport (glx, gly, glwidth, glheight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity ();
glOrtho (0, vid.width, vid.height, 0, -99999, 99999);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity ();
glDisable (GL_DEPTH_TEST);
glDisable (GL_CULL_FACE);
glDisable (GL_BLEND);
//glEnable (GL_ALPHA_TEST);
//glDisable (GL_ALPHA_TEST);
glColor4f (1,1,1,1);
}
//====================================================================
/*
================
GL_FindTexture
================
*/
int GL_FindTexture (char *identifier)
{
int i;
gltexture_t *glt;
for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
{
if (!strcmp (identifier, glt->identifier))
return gltextures[i].texnum;
}
return -1;
}
/*
================
GL_ResampleTexture
================
*/
void GL_ResampleTexture (unsigned *in, int inwidth, int inheight, unsigned *out, int outwidth, int outheight)
{
int i, j;
unsigned *inrow;
unsigned frac, fracstep;
fracstep = inwidth*0x10000/outwidth;
for (i=0 ; i<outheight ; i++, out += outwidth)
{
inrow = in + inwidth*(i*inheight/outheight);
frac = fracstep >> 1;
for (j=0 ; j<outwidth ; j+=4)
{
out[j] = inrow[frac>>16];
frac += fracstep;
out[j+1] = inrow[frac>>16];
frac += fracstep;
out[j+2] = inrow[frac>>16];
frac += fracstep;
out[j+3] = inrow[frac>>16];
frac += fracstep;
}
}
}
/*
================
GL_Resample8BitTexture -- JACK
================
*/
void GL_Resample8BitTexture (unsigned char *in, int inwidth, int inheight, unsigned char *out, int outwidth, int outheight)
{
int i, j;
unsigned char *inrow;
unsigned frac, fracstep;
fracstep = inwidth*0x10000/outwidth;
for (i=0 ; i<outheight ; i++, out += outwidth)
{
inrow = in + inwidth*(i*inheight/outheight);
frac = fracstep >> 1;
for (j=0 ; j<outwidth ; j+=4)
{
out[j] = inrow[frac>>16];
frac += fracstep;
out[j+1] = inrow[frac>>16];
frac += fracstep;
out[j+2] = inrow[frac>>16];
frac += fracstep;
out[j+3] = inrow[frac>>16];
frac += fracstep;
}
}
}
/*
================
GL_MipMap
Operates in place, quartering the size of the texture
================
*/
void GL_MipMap (byte *in, int width, int height)
{
int i, j;
byte *out;
width <<=2;
height >>= 1;
out = in;
for (i=0 ; i<height ; i++, in+=width)
{
for (j=0 ; j<width ; j+=8, out+=4, in+=8)
{
out[0] = (in[0] + in[4] + in[width+0] + in[width+4])>>2;
out[1] = (in[1] + in[5] + in[width+1] + in[width+5])>>2;
out[2] = (in[2] + in[6] + in[width+2] + in[width+6])>>2;
out[3] = (in[3] + in[7] + in[width+3] + in[width+7])>>2;
}
}
}
/*
================
GL_MipMap8Bit
Mipping for 8 bit textures
================
*/
void GL_MipMap8Bit (byte *in, int width, int height)
{
int i, j;
unsigned short r,g,b;
byte *out, *at1, *at2, *at3, *at4;
// width <<=2;
height >>= 1;
out = in;
for (i=0 ; i<height ; i++, in+=width)
{
for (j=0 ; j<width ; j+=2, out+=1, in+=2)
{
at1 = (byte *) (d_8to24table + in[0]);
at2 = (byte *) (d_8to24table + in[1]);
at3 = (byte *) (d_8to24table + in[width+0]);
at4 = (byte *) (d_8to24table + in[width+1]);
r = (at1[0]+at2[0]+at3[0]+at4[0]); r>>=5;
g = (at1[1]+at2[1]+at3[1]+at4[1]); g>>=5;
b = (at1[2]+at2[2]+at3[2]+at4[2]); b>>=5;
out[0] = d_15to8table[(r<<0) + (g<<5) + (b<<10)];
}
}
}
/*
===============
GL_Upload32
===============
*/
void GL_Upload32 (unsigned *data, int width, int height, qboolean mipmap, qboolean alpha)
{
int samples;
static unsigned scaled[1024*512]; // [512*256];
int scaled_width, scaled_height;
for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
;
for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
;
scaled_width >>= (int)gl_picmip.value;
scaled_height >>= (int)gl_picmip.value;
if (scaled_width > gl_max_size.value)
scaled_width = gl_max_size.value;
if (scaled_height > gl_max_size.value)
scaled_height = gl_max_size.value;
if (scaled_width * scaled_height > sizeof(scaled)/4)
Sys_Error ("GL_LoadTexture: too big");
samples = alpha ? gl_alpha_format : gl_solid_format;
texels += scaled_width * scaled_height;
if (scaled_width == width && scaled_height == height)
{
if (!mipmap)
{
glTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
goto done;
}
memcpy (scaled, data, width*height*4);
}
else
GL_ResampleTexture (data, width, height, scaled, scaled_width, scaled_height);
glTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
if (mipmap)
{
int miplevel;
miplevel = 0;
while (scaled_width > 1 || scaled_height > 1)
{
GL_MipMap ((byte *)scaled, scaled_width, scaled_height);
scaled_width >>= 1;
scaled_height >>= 1;
if (scaled_width < 1)
scaled_width = 1;
if (scaled_height < 1)
scaled_height = 1;
miplevel++;
glTexImage2D (GL_TEXTURE_2D, miplevel, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
}
}
done: ;
if (mipmap)
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
}
else
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
}
}
void GL_Upload8_EXT (byte *data, int width, int height, qboolean mipmap, qboolean alpha)
{
int i, s;
qboolean noalpha;
unsigned char scaled[1024*512]; // [512*256];
int scaled_width, scaled_height;
s = width*height;
// if there are no transparent pixels, make it a 3 component
// texture even if it was specified as otherwise
if (alpha)
{
noalpha = true;
for (i=0 ; i<s ; i++)
{
if (data[i] == 255)
noalpha = false;
}
if (alpha && noalpha)
alpha = false;
}
for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
;
for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
;
scaled_width >>= (int)gl_picmip.value;
scaled_height >>= (int)gl_picmip.value;
if (scaled_width > gl_max_size.value)
scaled_width = gl_max_size.value;
if (scaled_height > gl_max_size.value)
scaled_height = gl_max_size.value;
if (scaled_width * scaled_height > sizeof(scaled))
Sys_Error ("GL_LoadTexture: too big");
texels += scaled_width * scaled_height;
if (scaled_width == width && scaled_height == height)
{
if (!mipmap)
{
glTexImage2D (GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX , GL_UNSIGNED_BYTE, data);
goto done;
}
memcpy (scaled, data, width*height);
}
else
GL_Resample8BitTexture (data, width, height, scaled, scaled_width, scaled_height);
glTexImage2D (GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, scaled);
if (mipmap)
{
int miplevel;
miplevel = 0;
while (scaled_width > 1 || scaled_height > 1)
{
GL_MipMap8Bit ((byte *)scaled, scaled_width, scaled_height);
scaled_width >>= 1;
scaled_height >>= 1;
if (scaled_width < 1)
scaled_width = 1;
if (scaled_height < 1)
scaled_height = 1;
miplevel++;
glTexImage2D (GL_TEXTURE_2D, miplevel, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, scaled);
}
}
done: ;
if (mipmap)
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
}
else
{
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
}
}
/*
===============
GL_Upload8
===============
*/
void GL_Upload8 (byte *data, int width, int height, qboolean mipmap, qboolean alpha)
{
static unsigned trans[640*480]; // FIXME, temporary
int i, s;
qboolean noalpha;
int p;
s = width*height;
// if there are no transparent pixels, make it a 3 component
// texture even if it was specified as otherwise
if (alpha)
{
noalpha = true;
for (i=0 ; i<s ; i++)
{
p = data[i];
if (p == 255)
noalpha = false;
trans[i] = d_8to24table[p];
}
if (alpha && noalpha)
alpha = false;
}
else
{
if (s&3)
Sys_Error ("GL_Upload8: s&3");
for (i=0 ; i<s ; i+=4)
{
trans[i] = d_8to24table[data[i]];
trans[i+1] = d_8to24table[data[i+1]];
trans[i+2] = d_8to24table[data[i+2]];
trans[i+3] = d_8to24table[data[i+3]];
}
}
if (VID_Is8bit() && !alpha && (data!=scrap_texels[0])) {
GL_Upload8_EXT (data, width, height, mipmap, alpha);
return;
}
GL_Upload32 (trans, width, height, mipmap, alpha);
}
//Diabolickal TGA Begin
int lhcsumtable[256];
int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha, int bytesperpixel)
{
int i, s, lhcsum;
gltexture_t *glt;
// occurances. well this isn't exactly a checksum, it's better than that but
// not following any standards.
lhcsum = 0;
s = width*height*bytesperpixel;
for (i = 0;i < 256;i++) lhcsumtable[i] = i + 1;
for (i = 0;i < s;i++) lhcsum += (lhcsumtable[data[i] & 255]++);
// see if the texture is allready present
if (identifier[0])
{
for (i=0, glt=gltextures ; i < numgltextures ; i++, glt++)
{
if (!strcmp (identifier, glt->identifier))
{
if (lhcsum != glt->lhcsum || width != glt->width || height != glt->height)
{
Con_DPrintf("GL_LoadTexture: cache mismatch\n");
Con_DPrintf("lhcsum: %d - %d\twidth: %d - %d\theight: %d - %d\n", lhcsum, glt->lhcsum, width, glt->width, height, glt->height);
goto GL_LoadTexture_setup;
}
return glt->texnum;
}
}
}
// whoever at id or threewave must've been half asleep...
GL_LoadTexture_setup:
glt = &gltextures[numgltextures];
numgltextures++;
glt->texnum = texture_extension_number;
texture_extension_number++;
strcpy (gltextures[glt->texnum].identifier, identifier);
// naievil -- why do we have this twice lol
gltextures[glt->texnum].checksum = lhcsum;
//gltextures[glt->texnum].lhcsum = lhcsum;
gltextures[glt->texnum].width = width;
gltextures[glt->texnum].height = height;
gltextures[glt->texnum].original_width = width;
gltextures[glt->texnum].original_height = height;
gltextures[glt->texnum].mipmap = mipmap;
gltextures[glt->texnum].bytesperpixel = bytesperpixel;
if (!isDedicated)
{
GL_Bind(glt->texnum);
if (bytesperpixel == 1) {
GL_Upload8 (data, width, height, mipmap, alpha);
}
else if (bytesperpixel == 4) {
GL_Upload32 ((unsigned*)data, width, height, mipmap, true);
}
else {
Sys_Error("GL_LoadTexture: unknown bytesperpixel\n");
}
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
return glt->texnum;
}
//Diabolickal TGA End
/****************************************/
/*
================
GL_LoadTexture32
================
*/
extern byte vid_gamma_table[256];
int GL_LoadTexture32 (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha)
{
int i;
gltexture_t *glt;
int image_size = width * height;
// see if the texture is already present
if (identifier[0])
{
for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
{
if (!strcmp (identifier, glt->identifier))
{
if (width != glt->width || height != glt->height) {
// naievil -- fixme: this means we have a memory leak somewhere, was sys_error
// OR that two different people used the same texture name
// which is actually possible
Con_Printf("GL_LoadTexture: cache mismatch for %s\n", identifier);
break;
}
return gltextures[i].texnum;
}
}
}
else {
glt = &gltextures[numgltextures];
numgltextures++;
}
strcpy (glt->identifier, identifier);
glt->texnum = texture_extension_number;
gltextures[glt->texnum].width = width;
gltextures[glt->texnum].height = height;
gltextures[glt->texnum].original_width = width;
gltextures[glt->texnum].original_height = height;
gltextures[glt->texnum].mipmap = mipmap;
gltextures[glt->texnum].bytesperpixel = 4;
GL_Bind(texture_extension_number );
for (i = 0; i < image_size; i++){
data[4 * i] = gammatable[data[4 * i]];
data[4 * i + 1] = gammatable[data[4 * i + 1]];
data[4 * i + 2] = gammatable[data[4 * i + 2]];
}
GL_Upload32 ((unsigned *)data, width, height, mipmap, alpha);
texture_extension_number++;
return texture_extension_number-1;
}
//Diabolickal End
/*
================
GL_LoadPicTexture
================
*/
int GL_LoadPicTexture (qpic_t *pic)
{
return GL_LoadTexture ("", pic->width, pic->height, pic->data, false, true, 1);
}
/****************************************/
static GLenum oldtarget = 0;
float gVertexBuffer[VERTEXARRAYSIZE];
float gColorBuffer[VERTEXARRAYSIZE];
float gTexCoordBuffer[VERTEXARRAYSIZE];
void GL_SelectTexture (GLenum target)
{
if (!gl_mtexable)
return;
qglSelectTextureSGIS(target);
if (target == oldtarget)
return;
cnttextures[oldtarget-TEXTURE0_SGIS] = currenttexture;
currenttexture = cnttextures[target-TEXTURE0_SGIS];
oldtarget = target;
}
//Diabolickal TGA Begin
int image_width;
int image_height;
#define IMAGE_MAX_DIMENSIONS 512
/*
=================================================================
PCX Loading
=================================================================
*/
typedef struct
{
char manufacturer;
char version;
char encoding;
char bits_per_pixel;
unsigned short xmin,ymin,xmax,ymax;
unsigned short hres,vres;
unsigned char palette[48];
char reserved;
char color_planes;
unsigned short bytes_per_line;
unsigned short palette_type;
char filler[58];
unsigned data; // unbounded
} pcx_t;
/*
============
LoadPCX
============
*/
byte* LoadPCX (FILE *f, int matchwidth, int matchheight)
{
pcx_t *pcx, pcxbuf;
byte palette[768];
byte *pix, *image_rgba;
int x, y;
int dataByte, runLength;
int count;
//
// parse the PCX file
//
fread (&pcxbuf, 1, sizeof(pcxbuf), f);
pcx = &pcxbuf;
if (pcx->manufacturer != 0x0a
|| pcx->version != 5
|| pcx->encoding != 1
|| pcx->bits_per_pixel != 8
|| pcx->xmax >= 514
|| pcx->ymax >= 514)
{
Con_Printf ("Bad pcx file\n");
return NULL;
}
if (matchwidth && (pcx->xmax+1) != matchwidth)
return NULL;
if (matchheight && (pcx->ymax+1) != matchheight)
return NULL;
// seek to palette
fseek (f, -768, SEEK_END);
fread (palette, 1, 768, f);
fseek (f, sizeof(pcxbuf) - 4, SEEK_SET);
count = (pcx->xmax+1) * (pcx->ymax+1);
image_rgba = (byte*)malloc( count * 4);
for (y=0 ; y<=pcx->ymax ; y++)
{
pix = image_rgba + 4*y*(pcx->xmax+1);
for (x=0 ; x<=pcx->xmax ; ) // muff - fixed - was referencing ymax
{
dataByte = fgetc(f);
if((dataByte & 0xC0) == 0xC0)
{
runLength = dataByte & 0x3F;
dataByte = fgetc(f);
}
else
runLength = 1;
while(runLength-- > 0)
{
pix[0] = palette[dataByte*3];
pix[1] = palette[dataByte*3+1];
pix[2] = palette[dataByte*3+2];
pix[3] = 255;
pix += 4;
x++;
}
}
}
image_width = pcx->xmax+1;
image_height = pcx->ymax+1;
return image_rgba;
}
/*
=========================================================
Targa
=========================================================
*/
#define TGA_MAXCOLORS 16384
/* Definitions for image types. */
#define TGA_Null 0 /* no image data */
#define TGA_Map 1 /* Uncompressed, color-mapped images. */
#define TGA_RGB 2 /* Uncompressed, RGB images. */
#define TGA_Mono 3 /* Uncompressed, black and white images. */
#define TGA_RLEMap 9 /* Runlength encoded color-mapped images. */
#define TGA_RLERGB 10 /* Runlength encoded RGB images. */
#define TGA_RLEMono 11 /* Compressed, black and white images. */
#define TGA_CompMap 32 /* Compressed color-mapped data, using Huffman, Delta, and runlength encoding. */
#define TGA_CompMap4 33 /* Compressed color-mapped data, using Huffman, Delta, and runlength encoding. 4-pass quadtree-type process. */
/* Definitions for interleave flag. */
#define TGA_IL_None 0 /* non-interleaved. */
#define TGA_IL_Two 1 /* two-way (even/odd) interleaving */
#define TGA_IL_Four 2 /* four way interleaving */
#define TGA_IL_Reserved 3 /* reserved */
/* Definitions for origin flag */
#define TGA_O_UPPER 0 /* Origin in lower left-hand corner. */
#define TGA_O_LOWER 1 /* Origin in upper left-hand corner. */
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;
int fgetLittleShort (FILE *f)
{
byte b1, b2;
b1 = fgetc(f);
b2 = fgetc(f);
return (short)(b1 + b2*256);
}
int fgetLittleLong (FILE *f)
{
byte b1, b2, b3, b4;
b1 = fgetc(f);
b2 = fgetc(f);
b3 = fgetc(f);
b4 = fgetc(f);
return b1 + (b2<<8) + (b3<<16) + (b4<<24);
}
/*
=============
LoadTGA
=============
*/
byte *LoadTGA (FILE *fin, int matchwidth, int matchheight)
{
int w, h, x, y, realrow, truerow, baserow, i, temp1, temp2, pixel_size, map_idx;
int RLE_count, RLE_flag, size, interleave, origin;
qboolean mapped, rlencoded;
byte *data, *dst, r, g, b, a, j, k, l, *ColorMap;
TargaHeader header;
header.id_length = fgetc (fin);
header.colormap_type = fgetc (fin);
header.image_type = fgetc (fin);
header.colormap_index = fgetLittleShort (fin);
header.colormap_length = fgetLittleShort (fin);
header.colormap_size = fgetc (fin);
header.x_origin = fgetLittleShort (fin);
header.y_origin = fgetLittleShort (fin);
header.width = fgetLittleShort (fin);
header.height = fgetLittleShort (fin);
header.pixel_size = fgetc (fin);
header.attributes = fgetc (fin);
if (header.width > IMAGE_MAX_DIMENSIONS || header.height > IMAGE_MAX_DIMENSIONS)
{
Con_DPrintf ("TGA image %s exceeds maximum supported dimensions\n", fin);
fclose (fin);
return NULL;
}
if ((matchwidth && header.width != matchwidth) || (matchheight && header.height != matchheight))
{
fclose (fin);
return NULL;
}
if (header.id_length != 0)
fseek (fin, header.id_length, SEEK_CUR);
/* validate TGA type */
switch (header.image_type)
{
case TGA_Map:
case TGA_RGB:
case TGA_Mono:
case TGA_RLEMap:
case TGA_RLERGB:
case TGA_RLEMono:
break;
default:
Con_DPrintf ("Unsupported TGA image %s: Only type 1 (map), 2 (RGB), 3 (mono), 9 (RLEmap), 10 (RLERGB), 11 (RLEmono) TGA images supported\n");
fclose (fin);
return NULL;
}
/* validate color depth */
switch (header.pixel_size)
{
case 8:
case 15:
case 16:
case 24:
case 32:
break;
default:
Con_DPrintf ("Unsupported TGA image %s: Only 8, 15, 16, 24 or 32 bit images (with colormaps) supported\n");
fclose (fin);
return NULL;
}
r = g = b = a = l = 0;
/* if required, read the color map information. */
ColorMap = NULL;
mapped = (header.image_type == TGA_Map || header.image_type == TGA_RLEMap) && header.colormap_type == 1;
if (mapped)
{
/* validate colormap size */
switch (header.colormap_size)
{
case 8:
case 15:
case 16:
case 32:
case 24:
break;
default:
Con_DPrintf ("Unsupported TGA image %s: Only 8, 15, 16, 24 or 32 bit colormaps supported\n");
fclose (fin);
return NULL;
}
temp1 = header.colormap_index;
temp2 = header.colormap_length;
if ((temp1 + temp2 + 1) >= TGA_MAXCOLORS)
{
fclose (fin);
return NULL;
}
ColorMap = (byte*)(malloc (TGA_MAXCOLORS * 4));
map_idx = 0;
for (i = temp1 ; i < temp1 + temp2 ; ++i, map_idx += 4)
{
/* read appropriate number of bytes, break into rgb & put in map. */
switch (header.colormap_size)
{
case 8: /* grey scale, read and triplicate. */
r = g = b = getc (fin);
a = 255;
break;
case 15: /* 5 bits each of red green and blue. */
/* watch byte order. */
j = getc (fin);
k = getc (fin);
l = ((unsigned int)k << 8) + j;
r = (byte)(((k & 0x7C) >> 2) << 3);
g = (byte)((((k & 0x03) << 3) + ((j & 0xE0) >> 5)) << 3);
b = (byte)((j & 0x1F) << 3);
a = 255;
break;
case 16: /* 5 bits each of red green and blue, 1 alpha bit. */
/* watch byte order. */
j = getc (fin);
k = getc (fin);
l = ((unsigned int)k << 8) + j;
r = (byte)(((k & 0x7C) >> 2) << 3);
g = (byte)((((k & 0x03) << 3) + ((j & 0xE0) >> 5)) << 3);
b = (byte)((j & 0x1F) << 3);
a = (k & 0x80) ? 255 : 0;
break;
case 24: /* 8 bits each of blue, green and red. */
b = getc (fin);
g = getc (fin);
r = getc (fin);
a = 255;
l = 0;
break;
case 32: /* 8 bits each of blue, green, red and alpha. */
b = getc (fin);
g = getc (fin);
r = getc (fin);
a = getc (fin);
l = 0;
break;
}
ColorMap[map_idx+0] = r;
ColorMap[map_idx+1] = g;
ColorMap[map_idx+2] = b;
ColorMap[map_idx+3] = a;
}
}
/* check run-length encoding. */
rlencoded = (header.image_type == TGA_RLEMap || header.image_type == TGA_RLERGB || header.image_type == TGA_RLEMono);
RLE_count = RLE_flag = 0;
image_width = w = header.width;
image_height = h = header.height;
size = w * h * 4;
data = (byte*)(malloc (size));
/* read the Targa file body and convert to portable format. */
pixel_size = header.pixel_size;
origin = (header.attributes & 0x20) >> 5;
interleave = (header.attributes & 0xC0) >> 6;
truerow = baserow = 0;
for (y=0 ; y<h ; y++)
{
realrow = truerow;
if (origin == TGA_O_UPPER)
realrow = h - realrow - 1;
dst = data + realrow * w * 4;
for (x=0 ; x<w ; x++)
{
/* check if run length encoded. */
if (rlencoded)
{
if (!RLE_count)
{
/* have to restart run. */
i = getc (fin);
RLE_flag = (i & 0x80);
if (!RLE_flag) // stream of unencoded pixels
RLE_count = i + 1;
else // single pixel replicated
RLE_count = i - 127;
/* decrement count & get pixel. */
--RLE_count;
}
else
{
/* have already read count & (at least) first pixel. */
--RLE_count;
if (RLE_flag)
/* replicated pixels. */
goto PixEncode;
}
}
/* read appropriate number of bytes, break into RGB. */
switch (pixel_size)
{
case 8: /* grey scale, read and triplicate. */
r = g = b = l = getc (fin);
a = 255;
break;
case 15: /* 5 bits each of red green and blue. */
/* watch byte order. */
j = getc (fin);
k = getc (fin);
l = ((unsigned int)k << 8) + j;
r = (byte)(((k & 0x7C) >> 2) << 3);
g = (byte)((((k & 0x03) << 3) + ((j & 0xE0) >> 5)) << 3);
b = (byte)((j & 0x1F) << 3);
a = 255;
break;
case 16: /* 5 bits each of red green and blue, 1 alpha bit. */
/* watch byte order. */
j = getc (fin);
k = getc (fin);
l = ((unsigned int)k << 8) + j;
r = (byte)(((k & 0x7C) >> 2) << 3);
g = (byte)((((k & 0x03) << 3) + ((j & 0xE0) >> 5)) << 3);
b = (byte)((j & 0x1F) << 3);
a = (k & 0x80) ? 255 : 0;
break;
case 24: /* 8 bits each of blue, green and red. */
b = getc (fin);
g = getc (fin);
r = getc (fin);
a = 255;
l = 0;
break;
case 32: /* 8 bits each of blue, green, red and alpha. */
b = getc (fin);
g = getc (fin);
r = getc (fin);
a = getc (fin);
l = 0;
break;
default:
Con_DPrintf ("Malformed TGA image: Illegal pixel_size '%d'\n", pixel_size);
fclose (fin);
free (data);
if (mapped)
free (ColorMap);
return NULL;
}
PixEncode:
if (mapped)
{
map_idx = l * 4;
*dst++ = ColorMap[map_idx+0];
*dst++ = ColorMap[map_idx+1];
*dst++ = ColorMap[map_idx+2];
*dst++ = ColorMap[map_idx+3];
}
else
{
*dst++ = r;
*dst++ = g;
*dst++ = b;
*dst++ = a;
}
}
if (interleave == TGA_IL_Four)
truerow += 4;
else if (interleave == TGA_IL_Two)
truerow += 2;
else
truerow++;
if (truerow >= h)
truerow = ++baserow;
}
if (mapped)
free (ColorMap);
fclose (fin);
return data;
}
byte* loadimagepixels (char* filename, qboolean complain, int matchwidth, int matchheight)
{
FILE *f;
char basename[128], name[132];
byte *c;
if (complain == qfalse)
COM_StripExtension(filename, basename); // strip the extension to allow TGA
else
strcpy(basename, filename);
c = (byte*)basename;
while (*c)
{
if (*c == '*')
*c = '+';
c++;
}
//Try TGA
sprintf (name, "%s.tga", basename);
COM_FOpenFile (name, &f);
if (f)
return LoadTGA (f, matchwidth, matchheight);
//Try PCX
sprintf (name, "%s.pcx", basename);
COM_FOpenFile (name, &f);
if (f)
return LoadPCX (f, matchwidth, matchheight);
//if (complain)
// Con_Printf ("Couldn't load %s.tga or %s.pcx \n", filename);
return NULL;
}
int loadtextureimage (char* filename, int matchwidth, int matchheight, qboolean complain, qboolean mipmap)
{
int texnum;
byte *data;
if (!(data = loadimagepixels (filename, complain, matchwidth, matchheight))) {
Con_DPrintf("Cannot load image %s\n", filename);
return 0;
}
texnum = GL_LoadTexture (filename, image_width, image_height, data, mipmap, qtrue, 4);
free(data);
return texnum;
}
// Tomaz || TGA End
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