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bool hasoverbright = false;
void purgetextures();
GLUquadricObj *qsphere = NULL;
int glmaxtexsize = 256;
void
void gl_init(int w, int h)
//#define fogvalues 0.5f, 0.6f, 0.7f, 1.0f
glViewport(0, 0, w, h);
glClearDepth(1.0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glShadeModel(GL_SMOOTH);
glEnable(GL_FOG);
glFogi(GL_FOG_MODE, GL_LINEAR);
glFogf(GL_FOG_DENSITY, 0.25);
glHint(GL_FOG_HINT, GL_NICEST);
glEnable(GL_LINE_SMOOTH);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glEnable(GL_POLYGON_OFFSET_LINE);
glPolygonOffset(-3.0, -3.0);
glCullFace(GL_FRONT);
glEnable(GL_CULL_FACE);
char *exts = (char *)glGetString(GL_EXTENSIONS);
if(strstr(exts, "GL_EXT_texture_env_combine")) hasoverbright = true;
else conoutf("WARNING: cannot use overbright lighting, using old lighting model!");
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &glmaxtexsize);
purgetextures();
if(!(qsphere = gluNewQuadric())) fatal("glu sphere");
gluQuadricDrawStyle(qsphere, GLU_FILL);
gluQuadricOrientation(qsphere, GLU_INSIDE);
gluQuadricTexture(qsphere, GL_TRUE);
glNewList(1, GL_COMPILE);
gluSphere(qsphere, 1, 12, 6);
glEndList();
void cleangl()
if(qsphere) gluDeleteQuadric(qsphere);
bool installtex(int tnum, char *texname, int &xs, int &ys, bool clamp)
SDL_Surface *s = IMG_Load(texname);
if(!s) { conoutf("couldn't load texture %s", texname); return false; };
if(s->format->BitsPerPixel!=24) { conoutf("texture must be 24bpp: %s", texname); return false; };
// loopi(s->w*s->h*3) { uchar *p = (uchar *)s->pixels+i; *p = 255-*p; };
glBindTexture(GL_TEXTURE_2D, tnum);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, clamp ? GL_CLAMP_TO_EDGE : GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, clamp ? GL_CLAMP_TO_EDGE : GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); //NEAREST);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
xs = s->w;
ys = s->h;
while(xs>glmaxtexsize || ys>glmaxtexsize) { xs /= 2; ys /= 2; };
void *scaledimg = s->pixels;
if(xs!=s->w)
{
conoutf("warning: quality loss: scaling %s", texname); // for voodoo cards under linux
scaledimg = alloc(xs*ys*3);
gluScaleImage(GL_RGB, s->w, s->h, GL_UNSIGNED_BYTE, s->pixels, xs, ys, GL_UNSIGNED_BYTE, scaledimg);
};
if(gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGB, xs, ys, GL_RGB, GL_UNSIGNED_BYTE, scaledimg)) fatal("could not build mipmaps");
if(xs!=s->w) free(scaledimg);
SDL_FreeSurface(s);
return true;
// each texture slot can have multople texture frames, of which currently only the first is used
// additional frames can be used for various shaders
// each texture slot can have multople texture frames, of which currently only
// the first is used additional frames can be used for various shaders
const int MAXTEX = 1000;
int texx[MAXTEX]; // ( loaded texture ) -> ( name, size )
int texy[MAXTEX];
int texx[MAXTEX]; // ( loaded texture ) -> ( name, size )
int texy[MAXTEX];
string texname[MAXTEX];
int curtex = 0;
const int FIRSTTEX = 1000; // opengl id = loaded id + FIRSTTEX
const int FIRSTTEX = 1000; // opengl id = loaded id + FIRSTTEX
// std 1+, sky 14+, mdls 20+
const int MAXFRAMES = 2; // increase to allow more complex shader defs
int mapping[256][MAXFRAMES]; // ( cube texture, frame ) -> ( opengl id, name )
const int MAXFRAMES = 2; // increase to allow more complex shader defs
int mapping[256][MAXFRAMES]; // ( cube texture, frame ) -> ( opengl id, name )
string mapname[256][MAXFRAMES];
void
void purgetextures()
loopi(256) loop(j,MAXFRAMES) mapping[i][j] = 0;
void texturereset() { curtexnum = 0; };
void texture(char *aframe, char *name)
int num = curtexnum++, frame = atoi(aframe);
if(num<0 || num>=256 || frame<0 || frame>=MAXFRAMES) return;
mapping[num][frame] = 1;
char *n = mapname[num][frame];
strcpy_s(n, name);
path(n);
int lookuptexture(int tex, int &xs, int &ys)
int frame = 0; // other frames?
int tid = mapping[tex][frame];
if(tid>=FIRSTTEX)
{
xs = texx[tid-FIRSTTEX];
ys = texy[tid-FIRSTTEX];
return tid;
};
xs = ys = 16;
if(!tid) return 1; // crosshair :)
loopi(curtex) // lazily happens once per "texture" command, basically
{
if(strcmp(mapname[tex][frame], texname[i])==0)
{
mapping[tex][frame] = tid = i+FIRSTTEX;
xs = texx[i];
ys = texy[i];
return tid;
};
};
if(curtex==MAXTEX) fatal("loaded too many textures");
int tnum = curtex+FIRSTTEX;
strcpy_s(texname[curtex], mapname[tex][frame]);
sprintf_sd(name)("packages%c%s", PATHDIV, texname[curtex]);
if(installtex(tnum, name, xs, ys))
{
mapping[tex][frame] = tnum;
texx[curtex] = xs;
texy[curtex] = ys;
curtex++;
return tnum;
}
else
{
return mapping[tex][frame] = FIRSTTEX; // temp fix
};
void setupworld()
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
setarraypointers();
if(hasoverbright)
{
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_EXT, GL_MODULATE);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_EXT, GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_EXT, GL_PRIMARY_COLOR_EXT);
};
struct strip { int tex, start, num; };
struct strip {
int tex, start, num;
};
vector<strip> strips;
void
void renderstripssky()
glBindTexture(GL_TEXTURE_2D, skyoglid);
loopv(strips) if(strips[i].tex==skyoglid) glDrawArrays(GL_TRIANGLE_STRIP, strips[i].start, strips[i].num);
void renderstrips()
int lasttex = -1;
loopv(strips) if(strips[i].tex!=skyoglid)
{
if(strips[i].tex!=lasttex)
{
glBindTexture(GL_TEXTURE_2D, strips[i].tex);
lasttex = strips[i].tex;
};
glDrawArrays(GL_TRIANGLE_STRIP, strips[i].start, strips[i].num);
};
void overbright(float amount) { if(hasoverbright) glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE_EXT, amount ); };
void addstrip(int tex, int start, int n)
strip &s = strips.add();
s.tex = tex;
s.start = start;
s.num = n;
VARFP(gamma, 30, 100, 300,
VARFP(gamma, 30, 100, 300, {
{
float f = gamma/100.0f;
if(SDL_SetGamma(f,f,f)==-1)
{
conoutf("Could not set gamma (card/driver doesn't support it?)");
conoutf("sdl: %s", SDL_GetError());
};
void transplayer()
glLoadIdentity();
glRotated(player1->roll,0.0,0.0,1.0);
glRotated(player1->pitch,-1.0,0.0,0.0);
glRotated(player1->yaw,0.0,1.0,0.0);
glTranslated(-player1->o.x, (player1->state==CS_DEAD ? player1->eyeheight-0.2f : 0)-player1->o.z, -player1->o.y);
VARP(hudgun,0,1,1);
VARP(hudgun, 0, 1, 1);
char *hudgunnames[] = { "hudguns/fist", "hudguns/shotg", "hudguns/chaing", "hudguns/rocket", "hudguns/rifle" };
char *hudgunnames[] = {"hudguns/fist", "hudguns/shotg", "hudguns/chaing",
"hudguns/rocket", "hudguns/rifle"};
void
void drawhudmodel(int start, int end, float speed, int base)
rendermodel(hudgunnames[player1->gunselect], start, end, 0, 1.0f, player1->o.x, player1->o.z, player1->o.y, player1->yaw+90, player1->pitch, false, 1.0f, speed, 0, base);
void drawhudgun(float fovy, float aspect, int farplane)
if(!hudgun /*|| !player1->gunselect*/) return;
glEnable(GL_CULL_FACE);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(fovy, aspect, 0.3f, farplane);
glMatrixMode(GL_MODELVIEW);
//glClear(GL_DEPTH_BUFFER_BIT);
int rtime = reloadtime(player1->gunselect);
if(player1->lastaction && player1->lastattackgun==player1->gunselect && lastmillis-player1->lastaction<rtime)
{
drawhudmodel(7, 18, rtime/18.0f, player1->lastaction);
}
else
{
drawhudmodel(6, 1, 100, 0);
};
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(fovy, aspect, 0.15f, farplane);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_CULL_FACE);
void gl_drawframe(int w, int h, float curfps)
float hf = hdr.waterlevel-0.3f;
float fovy = (float)fov*h/w;
float aspect = w/(float)h;
bool underwater = player1->o.z<hf;
glFogi(GL_FOG_START, (fog+64)/8);
glFogi(GL_FOG_END, fog);
float fogc[4] = { (fogcolour>>16)/256.0f, ((fogcolour>>8)&255)/256.0f, (fogcolour&255)/256.0f, 1.0f };
glFogfv(GL_FOG_COLOR, fogc);
glClearColor(fogc[0], fogc[1], fogc[2], 1.0f);
if(underwater)
{
fovy += (float)sin(lastmillis/1000.0)*2.0f;
aspect += (float)sin(lastmillis/1000.0+PI)*0.1f;
glFogi(GL_FOG_START, 0);
glFogi(GL_FOG_END, (fog+96)/8);
};
glClear((player1->outsidemap ? GL_COLOR_BUFFER_BIT : 0) | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
int farplane = fog*5/2;
gluPerspective(fovy, aspect, 0.15f, farplane);
glMatrixMode(GL_MODELVIEW);
transplayer();
glEnable(GL_TEXTURE_2D);
int xs, ys;
skyoglid = lookuptexture(DEFAULT_SKY, xs, ys);
resetcubes();
curvert = 0;
strips.setsize(0);
render_world(player1->o.x, player1->o.y, player1->o.z,
(int)player1->yaw, (int)player1->pitch, (float)fov, w, h);
finishstrips();
setupworld();
renderstripssky();
glLoadIdentity();
glRotated(player1->pitch, -1.0, 0.0, 0.0);
glRotated(player1->yaw, 0.0, 1.0, 0.0);
glRotated(90.0, 1.0, 0.0, 0.0);
glColor3f(1.0f, 1.0f, 1.0f);
glDisable(GL_FOG);
glDepthFunc(GL_GREATER);
draw_envbox(14, fog*4/3);
glDepthFunc(GL_LESS);
glEnable(GL_FOG);
transplayer();
overbright(2);
renderstrips();
xtraverts = 0;
renderclients();
monsterrender();
renderentities();
renderspheres(curtime);
renderents();
glDisable(GL_CULL_FACE);
drawhudgun(fovy, aspect, farplane);
overbright(1);
int nquads = renderwater(hf);
overbright(2);
render_particles(curtime);
overbright(1);
glDisable(GL_FOG);
glDisable(GL_TEXTURE_2D);
gl_drawhud(w, h, (int)curfps, nquads, curvert, underwater);
glEnable(GL_CULL_FACE);
glEnable(GL_FOG);
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