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This fixes the fog issue described here: http://forums.3drealms.com/vb/showpost.php?p=492096

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git-svn-id: https://svn.eduke32.com/eduke32@490 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2007-02-12 21:52:23 +00:00
parent 7e79039197
commit ac95cded34
1 changed files with 29 additions and 31 deletions
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60
polymer/build/src/polymost.c
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@ -152,12 +152,12 @@ GLuint peelprogram[2]; // ARBfp peeling fragment program
// Detail mapping cvar
long r_detailmapping = 1;
float fogresult, ofogresult;
float fogresult, ofogresult, fogcol[4];
void fogcalc (const signed char *shade, const char *vis)
void fogcalc (signed char shade, char vis, char pal)
{
if (*vis < 240) fogresult = (float)(*vis+16+(*shade<0?(-(*shade)*(*shade))/8.f:((*shade)*(*shade))/8.f));
else fogresult = (float)((*vis-240+(*shade<0?(-(*shade)*(*shade))/8.f:((*shade)*(*shade))/8.f))/(klabs(*vis-256)));
if (vis < 240) fogresult = (float)(vis+16+(shade<0?(-(shade)*(shade))/8.f:((shade)*(shade))/8.f));
else fogresult = (float)((vis-240+(shade<0?(-(shade)*(shade))/8.f:((shade)*(shade))/8.f))/(klabs(vis-256)));
fogresult *= gvisibility;
@ -165,6 +165,11 @@ void fogcalc (const signed char *shade, const char *vis)
if (fogresult < 0.010) fogresult = 0.010;
else if (fogresult > 10.000) fogresult = 10.000;
fogcol[0] = (float)palookupfog[pal].r / 63.f;
fogcol[1] = (float)palookupfog[pal].g / 63.f;
fogcol[2] = (float)palookupfog[pal].b / 63.f;
fogcol[3] = 0;
}
#endif
@ -671,7 +676,7 @@ void polymost_glinit()
bglHint(GL_FOG_HINT,GL_DONT_CARE);
#endif
bglFogi(GL_FOG_MODE,GL_EXP2);
bglFogi(GL_FOG_MODE,GL_EXP);
bglFogf(GL_FOG_DENSITY,1.0); //must be > 0, default is 1
/* bglFogf(GL_FOG_START,0.0); //default is 0
bglFogf(GL_FOG_END,1.0); //default is 1 */
@ -2738,8 +2743,9 @@ static void polymost_drawalls (long bunch)
#ifdef USE_OPENGL
if (!nofog)
{
fogcalc(&sec->floorshade,&sec->visibility);
fogcalc(sec->floorshade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
#endif
pow2xsplit = 0; domost(x0,fy0,x1,fy1); //flor
@ -2760,8 +2766,9 @@ static void polymost_drawalls (long bunch)
if (!nofog)
{
fogcalc(&sec->floorshade,&sec->visibility);
fogcalc(sec->floorshade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult * 0.005);
bglFogfv(GL_FOG_COLOR,fogcol);
}
//Use clamping for tiled sky textures
@ -3104,8 +3111,9 @@ static void polymost_drawalls (long bunch)
#ifdef USE_OPENGL
if (!nofog)
{
fogcalc(&sec->ceilingshade,&sec->visibility);
fogcalc(sec->ceilingshade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
#endif
pow2xsplit = 0; domost(x1,cy1,x0,cy0); //ceil
@ -3125,8 +3133,9 @@ static void polymost_drawalls (long bunch)
*/
if (!nofog)
{
fogcalc(&sec->ceilingshade,&sec->visibility);
fogcalc(sec->ceilingshade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult * 0.005);
bglFogfv(GL_FOG_COLOR,fogcol);
}
//Use clamping for tiled sky textures
for (i=(1<<pskybits)-1;i>0;i--)
@ -3440,8 +3449,9 @@ static void polymost_drawalls (long bunch)
#ifdef USE_OPENGL
if (!nofog)
{
fogcalc(&wal->shade,&sec->visibility);
fogcalc(wal->shade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
#endif
pow2xsplit = 1; domost(x1,ocy1,x0,ocy0);
@ -3481,8 +3491,9 @@ static void polymost_drawalls (long bunch)
#ifdef USE_OPENGL
if (!nofog)
{
fogcalc(&nwal->shade,&sec->visibility);
fogcalc(nwal->shade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
#endif
pow2xsplit = 1; domost(x0,ofy0,x1,ofy1);
@ -3518,8 +3529,9 @@ static void polymost_drawalls (long bunch)
#ifdef USE_OPENGL
if (!nofog)
{
fogcalc(&wal->shade,&sec->visibility);
fogcalc(wal->shade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
#endif
pow2xsplit = 1; domost(x0,-10000,x1,-10000);
@ -3985,18 +3997,9 @@ if (yp1 < SCISDIST) { t1 = (SCISDIST-oyp0)/(yp1-oyp0); xp1 = (xp1-oxp0)*t1+oxp0;
#ifdef USE_OPENGL
if (!nofog) {
if (rendmode >= 3) {
float col[4];
col[0] = (float)palookupfog[sec->floorpal].r / 63.f;
col[1] = (float)palookupfog[sec->floorpal].g / 63.f;
col[2] = (float)palookupfog[sec->floorpal].b / 63.f;
col[3] = 0;
bglFogfv(GL_FOG_COLOR,col);
if (!nofog)
{
fogcalc(&wal->shade,&sec->visibility);
bglFogf(GL_FOG_DENSITY,fogresult);
}
fogcalc(wal->shade,sec->visibility,sec->floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
}
#endif
@ -4105,14 +4108,9 @@ if (tspr->cstat&2) { if (!(tspr->cstat&512)) method = 2+4; else method = 3+4; }
return; // discard opaque sprite when composing the depth peels
}
if (!nofog && rendmode >= 3) {
float col[4];
col[0] = (float)palookupfog[sector[tspr->sectnum].floorpal].r / 63.f;
col[1] = (float)palookupfog[sector[tspr->sectnum].floorpal].g / 63.f;
col[2] = (float)palookupfog[sector[tspr->sectnum].floorpal].b / 63.f;
col[3] = 0;
bglFogfv(GL_FOG_COLOR,col); //default is 0,0,0,0
fogcalc((signed char *)&globalshade,&sector[tspr->sectnum].visibility);
fogcalc(globalshade,sector[tspr->sectnum].visibility,sector[tspr->sectnum].floorpal);
bglFogf(GL_FOG_DENSITY,fogresult);
bglFogfv(GL_FOG_COLOR,fogcol);
}
while (rendmode >= 3 && !(spriteext[tspr->owner].flags&SPREXT_NOTMD)) {