Hi everyone, I’ve been trying to do this for a long time, have been going through the forum for weeks but still can’t wrap my head around doing projection mapping in Babylon I’d like to project an albedoTexture onto several objects from the camera (or ideally just a transformNode) point of view. I…

I’m going to answer my own question: Just need to make sure that the mesh is excluded from the projecting light… https://playground.babylonjs.com/#YIU90M#370

Maybe you can use the projection texture from the spot light to achieve what you want to do: [image] Babylon Projection Texture Support Questions The problem is with mipmapping, which is not full white at the lowest level(s) but grey. You can either create the mipmap chai…

Thanks so much for linking this post. I had seen it many times late last year but I guess it was before all the new posts from December and on. I think I mostly got what I needed to work and just need to figure out a few more settings. I’ll post my playground here when I’m done in case anyone is in…

I finally got time to work on this again since day to day production got in my way. So I got it more or less working and I think it’s looking good. The one weird thing that I can’t seem to solve is that it’s slightly offset. I can correct it by tweaking my directional vector that matches the spotl…

It seems it’s your objects that are slightly miss-placed. For box2, for eg, if you set the position to (1.49, -0.057, -0.036) it fits better: https://playground.babylonjs.com/#YIU90M#303

Thanks! I actually figured out what the problem was, I was trying to rotate the light after creating it and I believe it was not registering the rotation. If I set up the rotation in the light constructor then I get a perfect match which is great! https://playground.babylonjs.com/#YIU90M#311 Now …

You need to set the spotlight position and direction according to the new camera when you switch: https://playground.babylonjs.com/#YIU90M#335 Regarding your last point, you can do something like that: https://playground.babylonjs.com/#YIU90M#339 I updated the code in the light fragment (line 94…

Thanks so much this is awesome. Looking back at my code, my first question was really dumb, not sure how I missed this but clearly I wasn’t doing anything to move the location or rotation of the spotlight on that playground… I may have shared the wrong playground by mistake but regardless whatever …

[image] christopheC: Did I miss anything or are there any resources you would recommend to get a better understanding of shader writing? It’s not really in the scope of Babylon to teach on writing shaders. The page you linked explains how to use your own shaders into Babylon.js but you should…

Got it, Thanks again for your help! Chris

Hi everyone, I have one more use case that I am hoping you could help with. I’d like to be able to switch from one projection map to another with a fade, very similar to what @Evgeni_Popov did from the cubemap to the light projection mapping but with 2 lights projection mapping. The idea would be…

Projection mapping

Questions

Evgeni_Popov March 12, 2021, 7:49am 2

Maybe you can use the projection texture from the spot light to achieve what you want to do:

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Projection mapping

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