seamless portals

[Exmirai]

@@Raz0r like you did in QtZ

https://www.youtube.com/watch?v=uv8WbnRvDMM

[ensiform]

Will only be seamless for players using newest JA++ client where the prediction is added afaik.

[Raz0r]

Pretty sure I made some minor engine changes too. @@Didz poked it a bit in JA getting portals to render correctly, he may have something to say.

[ensiform]

FYI the camera portals don't work if you use dynamic glow feature.

[Eternal]

I swear I've seen this somewhere before. Not in JA, but some other game.

[mrwonko]

FYI the camera portals don't work if you use dynamic glow feature.

That's a weirdly specific issue... We should see about getting that fixed.

[Raz0r]

I swear I've seen this somewhere before. Not in JA, but some other game.

Prey, Xonotic/Nexuiz, etc

[Xycaleth]

Portal

[ensiform]

That's a weirdly specific issue... We should see about getting that fixed.

https://github.com/JACoders/OpenJK/issues/471

[Raz0r]

Portal

What's that? Is that like a movie? I bet it's a trilogy like everything else these days huh.

[mrwonko]

What's that? Is that like a movie? I bet it's a trilogy like everything else these days huh.

I think he misspelled Postal. I didn't know that had portals though...

[Didz]

Pretty sure I made some minor engine changes too. @@Didz poked it a bit in JA getting portals to render correctly, he may have something to say.

 

I got portals rendering on quads and that's about as far as I think I got:

 

It had trouble rendering multiple portals at once and recursive portals, so it was basically with the same limitations as basejka misc_portal entities. The engine source code wasn't out at this point but in the Q3 source code I believe there's a single if statement that limits how many portals can be rendered at once to 1 (which also prevents recursion). This rendering experiment wasn't done with the portalmod source code, so there was no moving through portals here.

 

Also I wasn't sure how I'd fix issues like this, where the result of one portal renders through another:

 

In the 21st century, you'd probably do this with stencil buffers to limit the rendering of each portal to within their "viewport". Maybe this already happens and there needs to be multiple "levels" of stencil to handle distinct portals.

[mrwonko]

Well, since portals work by first drawing the scene they're linked to and then the original scene on top of it, there's really no way to have multiple at once without engine changes.

[ent]