Adaptive Subdivision & JSplacement Blender Tutorial

all right guys how's it going so i had an interesting conversation on twitter today and it reminded me of adaptive subdivision now i've covered this before but i thought might as well talk to up a little bit while i'm here plus there's a user on facebook wanting a tutorial so you know me i like to deliver to my fans now i'm actually going to use js placement to generate the height map and the color map now i've used this a lot of times it's excellent for doing things like gribbles and set dressing and it's available for free i'll put a link in the description down below and if you've never used it it's pretty damn cool to be honest so you essentially have a few different options i usually use version two and you can see here we can quickly generate a displacement map and the crap pack is usually the best so you can play around with these values you can use custom sprites for example you save out the height map if you would like to color it toggle colorizer it gives you a few options for color and all you do is save the color out it's so cool great application so we'll quickly jump into a blender in a traditional fashion we'll delete the default cube and i'm going to add on a ground plane so i'll press shift a and we'll add on a plane now in order to use adaptive subdivision you need to use cycles and you need to use the experimental version so if you go into the render settings here we'll change the render engine to cycles feature set we'll change this to experimental now i'm actually going to keep this on cpu at the moment because i'm recording and that's as pretty much set up i'll select the plane i'll go into the modded files and i'll add on a subdivision surface and you can see here we now have an option for adaptive subdivision so i'll make that simple so it keeps it a square and that's pretty much ready now the dyson scale you can play around with generally one pixels is fine 0.5 maybe but if you actually go into the render settings here you can see here we now have an option called subdivision so we can change the dyson ray of the render and i'm going to make a 0.5 and i'll put the maximum subdivisions up to 16. now that so increase the render time just a little bit but should be fine for this example and then i'll jump into the shading tab so let me quickly join these together so you don't see my files and i'm going to apply a new material now one thing you need to keep in mind as a lot of users forget about this is if you go into the material settings scroll down you can see here settings displacement is set to bump only so we need to change this to displacement only you could have it displacement and bump but we'll leave it displacement only at the moment and all we need to do is quickly set up a displacement texture now if you've done this before you're pretty much set up what i'm going to do here is i'll press shift any s to search add in an image texture i'll then add in a displacement node so i'll search for displacement we'll take the color from this and we'll plug this into the height and we'll take the displacement and we'll plug this into displacement pretty self-explanatory to be honest nice and easy now as an additional step you might want to drop down a texture coordinate node and a mapping node and we'll do this just for a giggle why not we don't necessarily need it because well we're using a plane but hey you never know when you might actually need it so i'm going to actually just use the generated i'll plug this into the vector i'll take the vector and i'll plug this into the image and i'm going to open the image that i saved from js placement so it's a seamless one we'll scroll in and there we go now i'm going to control the mid level it's a little bit high so maybe 0.1 i'm going to control the scale otherwise it's going to be massive and i'm going to drop this down it might be 0.15 that should be fine and i'm going to hit f12 and we're just going to take a quick look at the render so we now know the displacement is working now the camera view is a bit crap so i'm going to jump on the layout i'm going to just do it in the viewport i'll hit control alt and numpad 0 that should set the camera up for us perfectly i'll jump back into the shading tab and i'm going to add in a color map now we need to kind of organize the nodes a little bit here so what i'll do is i'll just copy this one i'll paste it in here i'll take the vector i'll plug it in here and we'll use a color map that we exported and we'll plug this into the base color you can see here we're now getting this colorized displacement now there's one thing that ducky 3d done in one of his tutorials and it looked absolutely phenomenal is he added an emission channel with a max shader so what i'm going to do here is i'm going to add an animation i'm going to set the color to something like maybe red and i'm going to put the strength up to about 30 and then i'm going to add in a mix shader and what we'll do here is we'll mix the principal shader here with a mission shader we'll then plug this back into the surface now obviously we're getting blow out for the emission channel hey so what i'm going to do here is i'm going to branch off the image i'm going to add in a color ramp and i'll plug this into the factor so we need to drop down a color ramp take the color plug this in here and then we'll plug this into the factor and when i squeeze the black values we end up getting this nice emission channel and when i hit f12 it's a really cool effect and using things like adaptive subdivision just good to play with do me a favor guys like your video subscribe to the channel if you haven't already follow me twitter support me and comment so i can buy a new gpu you know what to do take care

Channel: Steven Scott

Views: 45,116

Keywords: blender tutorial, displacment, displacement tutorial blender, blender 2.9, blender, displacement, adaptive subdivision, jsplacement, greebles, animation, 3d, tutorial, how to, beginner, information, how to make, blender 3d tutorial for beginners, beginner tutorial, rendering, texture setup

Id: 1AJWxKUnGiU

Length: 5min 35sec (335 seconds)

Published: Sat Nov 28 2020