Wow! Thanks for this tutorial and working through some of this stuff! One side question, how did you add the z/x axis lines to your terrain? That looks super helpful. Also - I really enjoy all of you videos.
Glad you like it! Its made with an triplanar. Make an ceil(abs(x)*10)/10 and with same with Z. that's the mask for the lines, then just use blend node with overwrite with a texture with z and x :-)
Yes you can, you just add another position and do “min” node on that. I explain it in this video Scaling Cubes VFX Unity Visual Graph - part 2 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-AxYMx4-zSJ8.html at 13.15 👍🙂
Hey i finished all the parts of the tutorial! really cool effect btw i love it, how can i move it instead of it being at the 0,0,0 posiitons in the world, say if i wanted it else where i tried to move it but it dosent move? it's only stuck there?
Happy to hear! Oh, I can't give an easy answer. I need to dive into that. Actually, it’s a good tutorial to cover. But I would recommend isolating the issue with just a box in a simple system. Figure out how to solve the position based on the system, and then apply it to the positions. You need to fiddle with the World/Local space in the VFX. You can tick on the VFX system in the top right corner. Also, use the position node to get the system's position and use add or subtract with the player’s position and particle position to transfer from world to local positions to solve it. Not a straight answer, but a pointer in the direction you need to go. I will try to remember to post here when I have a tutorial covering that. Good luck!🙂
I did everything exactly as in the video, but it gives this error: “Error rendering child: /obj/geo1/ropnet1/vertex_animation_textures1/render_mesh_fbx” Please help me to fix it.🙏🙏🙏🙏🥺😥
Oh its really hard to say like this, but is there a node that gives you error? if you hover your mouse over it and middle-mouse click. What do you get any error guidance that explain in any way? what time stamp in the video do you get error?
It should work on everything. Did you change your texture to normal in inspector for that texture? Also make sure you keep it in the boundaries, scale it down before export in Houdini and then scale up in unity.
@@黄海光-l4w Yea I think it is because vertex color is clamped to 0-1 value. And if you are animate something that exceed distance longer than can be saved in vertex channel then that's when the problem occurs. Probably more ways to sole it. But that is how I Solved it. I would like to be able to skip scale it in Unity. If someone solve that or now something please share. Happy you solved it :-)
If anyone can't see the shader graph box in OuputParticleUnlitQuad, you should activate "Preferences -> VisualEffects -> ExperimentalOperators/Blocks".
I’m glad you liked it, then you should check out this one too. Procedural Blood Splash Shader Graph Unity ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-sbudpV1zrqg.html it do cover some more stuff
Hi, I really like your video! May I get a new git hub link for the Unity project? The link you sent seems not the one you showed in the video. Thank you
Im glad you like it! I just verified its the correct link. You are looking for the project on github right? Then this is the correct link. github.com/NikLever/Unity-URP-Cookbook
Sorry, been thinking about it but that will not happen as for now. Though unreal is mutch more complete and powerful. Been using Niagara when I worked on a AAA game. It’s really good. Hope unity add features they have. One for instance is mixing GPU and cpu in same graph is really useful and spline support is so much better… but I decided unity is my shit. There is a lot of good tuts though, you should find 🙂☀️
Hey there, this is a great tutorial! I only seem to have an issue with the step where you add the pop wrangle. I can dive into the flip solver but the pop wrangle doesn't show up in the context menu and when I try to add anything else it tells me I don't have permission to add anything. even when I allow editing the solver the pop wrangle doesnt' show up. am I missing something?
Hmmm, you might not have the right solver, or you are in the "wrong" folder. What I mean by that is if it is the same folder/node as in the tutorial? Maybe you ended up in the wrong place? Then the context cant add pop wrangle
What I do know is this guy, but he stopped doing stuff. But really good stuff, learned a lot my self there. www.youtube.com/@IndiePixel3D This guy I know to! www.youtube.com/@brundlethwaite
Hi , thank you for the tutorial, when I try typing Set Custom attribute, nothing is showing to me, is there any thing i am missing?... I am using unity 2023.2.20f1, and vfx graph 16.0.6
Hmm, you mean you can’t find the node? In that case just write custom, and see if you find it. Also I don’t know if you need to have experimental features ticked in settings. Try that out 🙂
@@TechHamlin Wow, ticking the experimental features did it .. thank you so much sir 🌹 , also I have another nooby question, my mesh particles do not cast shadows .. is there any setting that can be disabling it?
@@mostafa3beed118 Glad it worked! That might be you need to choose "lit" shader. Also, check you light if shadows is set to on/off. Could also be a setting inside the shader. check the graph settings
Thank you, Hamlin, for keeping your works updated. Can I ask you a question about vertex colors? I can't get that information when using Houdini Engine. It works fine when I export as FBX and it also works in UE. What did I miss?
@@ominhtriet6163 It should work with no problems. Make sure that your @Cd is a vector and not something else like float. and save it on points in Houdini. And that should be enough to work. So for instance I had a problem in this tutorial in the end where occlusion was saved as f@Cd and not v@Cd. ok? Just do a box, and then a point wrangler with v@Cd = @P; and wrap it up like a digital asset. That should work
@@TechHamlin you are right, It should work when @Cd on Point but I wanna inject the Vertex Color to shader. I also used the Houdini Starter Kit from Sidefx, they use Point Attribute to control Color, I tried to get that infromation to Shader but failed.
Then it should just be a vertex color node in Shader graph?! Have you controlled you have the correct material assigned? Other than that I can’t think of anything else
Try to break it down on smaller things to solve. One step at the time. Maybe doing this tutorial first so you understand the basics! Then you will solve it 🙂
Its all about how plugins are made. I don't know how it works under the hood, but I suspect its like this. A vertex can be offset buy 1 unity. imagine you have a boundingbox around each vertex. It can only offset 1 unity or maybe 0.5 unity in each direction because vertex map is between 0-1. (each pixel in the texture only does vector3 from 0 - 1). so buy scale it down you can actually offset it 10 units., thus the boundingbox is 10 units. This is nothing I have confirmed anywhere but that's how I suspect it works. Its all about bounding boxes and how plugins are made. I have different experience in Unreal 5 with Houdini for instance.
You can avoid all this pain by exporting .bgeo from Houdini and importing the .bgeo by Houdini engine in Unity. this is my pipeline i work everyday with Houdini and Unity.
@@TechHamlin This part I mainly used to deal with the interaction of the hull with the sea and the interaction of the creatures with the sea surface, the generation of abc is the way the movie and television workflow, I use the vat process with Houdini output found that there will be a limit to the number of vertices, I do not know how to apply the vat process correctly!
ah alembic! Its soooo contex based on how easy/hard it is do solve that. if your abc file have the points number (ptnum) not jumping around but following the animation if you understand what I mean, then it should be not to hard. But break it down to smaller problems and solve it one by one. I guess your first step would be to read the attributes and understand how attributes get affected by animations inside Houdini. Then take it from there. Hope I point you in right direction 🙂
@@TechHamlin Thank you for your reply, I understand for the time being, to go through the vat process, there is a limit on the number of model faces (about 200,000 or so), if more than these faces try to deal with it in chunks, and there is also a change in the number of points in the abc file as you said, I'll test test test again!
You default settings do export color data. That is vertex color. Make sure you save it as @Cd as attributes on the models. This is for models. However if you want to export point cache, then don't use fbx, use the method described in the tutorial
I've got a question about VAT fluids ... I've got a scene with a pool of lava (planar patch mesh) and I'm using VFX Graph to spawn and respawn a VAT fluid at random places on the surface and shoot glowing lava up in the air ... everything works but I _cannot_ seem to get the timing/loop right! My simulation was 300 frames, 10 seconds (30fps). But in Unity I cannot get it to match. I set my particle lifetime to match the simulations properties but it always ends too early or too soon and gets out of sync with the VFX spawning. How do you deal with that? *EDIT:* I figured out a solution! You use particle age over life multiplied the number of frames then take floor of that value to drive the "display frame" property, turn off autoplay and use vfx total time minus spawnTime for the time ⏲️
You did an amazing job. I followed you tutorial and loved the out come. But it seems there is a bug. The floor tile sime times vanishes. It's still there but not rendering. How can I fix it?
Thats because you bounds in Iniialize Particle section is outside your camera view. Change the Size and that will sort it out. When Camera View don't "see" the effects center it will stop render to save performance :-)
