I feel like this should be simple but am having a hard time..
I have projected an HDR onto primitive Planes and would like to bake them as textures or somehow make them ‘stick’ so that I can move the planes around my scene. (my HDR was shot in the center of a warehouse, and I would like to move some walls/ the ceiling for better reflections)
I’ve used a 3d projection node to do the projection, got it looking good, but just can’t seem to figure out how to bake it out as a texture.
I assign bake options to my plane, then go to bake it and select ‘selected objects only’ and tick on ‘projection baking’ and then nothing happens.
I’ve also tried in my BakeOptions under Projection Baking ticking on ‘Closest’ for mode, and ticked on ‘Assign Target Set’ but that didn’t seem to make a difference.
“Projection baking” doesn’t refer to baking 3D projected textures, but to baking shading from one object onto the geometry of a different object, like this. I’m guessing it should bake fine if you just disable that. It’s a good practice to always check out the documentation for the check-boxes you tick, especially if something isn’t working
I think you just need to skip the placeEnvTex node, as you’re doubling the projections. EnvPlaceTex already sets it as spherical, then the maya projection sets it as spherical again.
Just have the file node go straight to the maya projection node and it should be fine (place2d > file > projection > shader).
well at least with Yolovs suggestion the Bake Result looks like what I was seeing in RT. So I suppose that’s a start? Is there a way to project onto geo without the PlaceEnvTex node properly without it being stretched to kingdom come?
I’m a little ashamed to admit that I stole those example images from the Clarisse documentation. Maybe something similar in the Vray docs would prevent confusion in the future
@yolov ov I was worried that might look confusing haha. The images have file names that describe what they are, if you hover your mouse over them. Also I wrote what each picture was
Yes, but they just say “Project_1_BakeResult” and I find it hard to figure if that is with placeEnvTex, which one is without it and what does RT bake have to do with it
Sorry for the late reply, couldn’t get to you earlier.
Can you tell me what the end goal is here? Why do you need to do the projection? What do you need to be seen on the plane if the projection worked as you expected it to?
I just want to project some of my HDR onto a plane and then be able to move that plane with the HDR as a fixed texture. End goal is to have better/ more realistic reflections. So I am trying to basically move a wall closer to my object.
I’d personally go with just the Maya projection texture in spherical mode and skip the placeEnvTex completely.
Here’s a sample setup - let me know if that’s something you can use (you’ll need to replace the texture).
The tricky bit is to do the geometry properly, as having the ground plane way up would cause the stretching you’re seeing from the maya projection. groundProjection.zip (10.9 KB)
AH I had plugged the ‘inverse matrix’ instead of the WORLD inverse matrix into the placement matrix, for the 3dplacement to projection connection. DOH!
Once i did this I was able to bake to texture and everything behaved as expected
Thank you for your help and for sharing that scene
