I can explain how the experimental portal rendering works. Start() and Awake() run one time and Update() runs every frame. Load() loads the text file containing the level information. There are three class objects. Polyhedron contains indexes to a list of Faces. Polyhedron has planes indexes to chec...

Look at Bisqwit's video if you want to know more about portal rendering.

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

I'm working on a level converter and the Bisqwit portal rendering tutorial level now has texture coordinates.

https://www.youtube.com/watch?v=BQ13diEJevA

Made a new level format with texture coordinates on github.

https://github.com/huriettic/portalrend ... perimental

You're welcome to steal stuff from Forge+, which steals stuff from Weland to produce 3D geometry from maps in Unity (which you can then export to FBX from Unity Editor, if you want). Full geometry and texturing support - the only missing bit is that it doesn't generate "portal" side geome...

I've updated the prototype to Unity 2022.3.18f1. https://github.com/huriettic/portalrenderingimpossiblespace https://www.youtube.com/watch?v=g1zEmdnR2Ww Check sectors was changed and now it collects the sectors the player is in contact with. The portal visibility check was separated from the player ...

Well if you want to know light mapping then I can send you a useful link. Raytracer I've also done a cutout lit sprite shader that can also rotate on the Y axis with any gameObject components for my games if you want it. I need to render sprites without using a shader. The shader on the sprite obje...

You mean you're gonna code an engine for Unity and I'll make the assets(Sprites, textures, audio)? I'll make parts of the engine I know how to as I've had ideas on how they work. I don't know how to do Lighting effects. You can make a scenario when it's more complete. Release your scenario as MIT l...

I sorta was planning on doing a modifiable engine from Unity that can load data and support custom entities but I never could get myself to do it. I'm about to learn to make an editor for my homebrew Xbox engine as a Unity app so if I had less projects going on then I would had helped. You're right...

I would like to have an advanced 3D engine that runs Marathon scenarios with new features. Unity is what I know right now instead of a engine based in OpenGL. My portal rendering in Unity is MIT licensed and open source. https://github.com/huriettic/portalrenderingimpossiblespace A person with more ...

I've been researching three game engines. Unreal 1, Marathon and Doom 3. Take one element from each game. Marathon 5D space. Unreal 1 level design. Doom 3 portal rendering. Mix it all together and you get a new game engine. Modify Doom 3 source code to have 5D space like Marathon with Unreal 1 level...

What if I mix Halo and Marathon together?
https://forums.bungie.org/story/?read=75158

I've begun work on Unity Marathon.
https://github.com/huriettic/ultramarathon

Going to add textures to it.

Why remake/port an already existing game when you can use your talents on an original title? https://www.youtube.com/watch?v=psMd9DTZY4A&t Still. Good work. A new video of a level that was made in Weland. https://www.youtube.com/watch?v=ABR4kx4DT0c I had a idea to make a game engine that has ne...

I've finally added plane clipping to my project.

https://github.com/huriettic/portalrend ... siblespace

https://forums.bungie.org/story/?read=75143

Would anyone like to know how to do portal based occlusion culling?

https://www.youtube.com/watch?v=8xgb-ZcZV9s

The video gives you an idea of how it works, but the details of how to make it is complicated.

I don't exactly know how Direct X works, but I could research it and come up with a good structure for rendering triangles. Thank you. I'll take your advice and go with portal rendering for the game. For the DirectX part, I can show an example mesh generation of it. xbdev Marathon is Portal-based O...

No I mean I'm making new engines using DirectX 8 on the OG Xbox and has a level generator idea similar to Marathon's except true 3D without portals. It's a retro engine that makes a map from a file with predefined coords for vertices, walls, sectors and uv settings. I think you can help with gettin...

No I mean I'm making new engines using DirectX 8 on the OG Xbox and has a level generator idea similar to Marathon's except true 3D without portals. It's a retro engine that makes a map from a file with predefined coords for vertices, walls, sectors and uv settings. I think you can help with gettin...

Sorry, can you tell me how to make a custom file format or are you asking for what data the map converter saves?

Meerjel01 wrote: ↑Sep 12th '23, 19:56 I actually meant for my own engine using a custom file format. I usually does that. I can cook up an example and show if needed.

How do you make a custom file format?

I've been using JSON text files.

I know how everything works in Unity C# and now I want to make the portal renderer with OpenGL.

Hello. I was gonna DM you about something similar to this. But for my Homebrew Xbox engines. As in convert a simple text file with vertex and sector details into a map. Since you've asked this just recently I add this up. The text is a JSON file with vector3 and ints for lists of classes. The JSON ...

I'm trying to make a map converter that changes lines to planes for my new portal renderer. I modified the OBJ exporter from Weland to get the vertices and indexes of the vertices. A plane is vertices going around in clockwise order with a front and a back. A plane has two sides like a line. Save th...

You can port it to whatever system you want if you know how it works.

Study portal rendering.

Doom 3 and Aleph One are good examples of portal rendering.

It's possible you could create something original.

So I'm still developing 3D portal rendering for a Unity Marathon port. My Tests show that 3D portal rendering will be the same as 2D portal rendering that Aleph One has, but the floor and ceiling can be portals in 3D. Upgrading Marathon's portal rendering to 3D using mathematical planes. The planes ...

I made a more complicated Portal rendering system to render Marathon maps correctly, but it's too different from Marathon to load the maps automatically. https://github.com/huriettic/portalrenderingwithplanesandaabb Planes and axis aligned bounding boxes is how you can find portals and stencils hand...