GLBsp (Rendering)

[Jpez1432]

I am working on a opengl port, the gwa files from glbsp are loaded, linedefs are drawn (no textures) but what I can't figure out is how to render the floors, ceiling planes... anyone know anything reply to this post.

-James Pezold
-Jpezold@mail.win.org
-Jpez1432

[Infinite Ammunition]

Look at the ZdoomGL code and see how they do it

[timmie]

basically, it looks like this:

glBegin(GL_TRIANGLE_FAN);
for (i = 0; i < subSector->numlines; i++)
{
   seg = segs[subSector->firstline + i];
   glVertex3f(seg->v1->x / (FRACUNIT * 1.f), floorheight, seg->v1->y / (FRACUNIT * 1.f));
}
glEnd();

for one plane you go 0..numlines and the other is the opposite. You could also bitshift the x/y values (>> FRACBITS), but you get better precision by dividing by FRACUNIT (and converting to floating point).

For ZDoomGL, you have to query the sector plane for the height at a location (because of the slopes), but if you don't have to worry about slopes then just grab the floor/ceiling height normally.