quake3 mapping pvs

[dshader_t]

Hello guys,
Ive created big room with one wall that split it in two areas.. Ive used gtkradiant to create the prt file and view it... now the strange thing, I realised that the map compiler somehow split my portals into several smaller ones.

It seems that there's a limit of z size of a portal (1024), if the portal z size exceeds 1024, then compile splits that portal into smaller ones, but Im not sure...anyway its not necessary and I want to know how to turn it off?
Can anyone tell me how to fix that strange behavoiur ?

edit: another strange thing
Now my room floor z size is smaller than 900, but portals are still splited by z=0 plane.... I dont get it... the problem does not occur when I move my room up( so floor = 0, roof = 900)

[Foo]

It's by design. Unless you have a compelling, specific reason why the portals will cause a problem, don't sweat it.

[obsidian]

View > Show > Show Blocks shows you where the block splits are. By default, it does create a block every 1024 units on each axis. That's probably a good thing since a lot of optimizations are required by the blocks. You can change it (or disable) with _blocksize in the worldspawn. I don't recommend disabling it though.

[Foo]

That's probably a good thing since a lot of optimizations are required by the blocks.

Curious about this.... any info on the knock-on effects of turning off the automatic blocks? Are they more than just 'basic vis slicing'