Fluorescent Material and Glow for a Ghost Cat in Blender

1. Welcome: Hello. My name is Jacques Balcot and I am a Three artist. Are you ready to learn new shading and compositing tricks in blender? In this class, we'll create a fluorescent material. Then we'll make it glow with Blenders compositor. Come with me, and let's explore the amazing world of Three art together. 2. Fluorescent Material: Welcome to this class. So this is the scene. I have this model, this little Cat Ghost. It has a the body, the eyes, the mouth. So the scene is really simple. I have the model with the body, the eyes and mouth, I have a background, studio background. And I have a lot of lights. You can do the same thing with other lights. But anyway, you have the scene to test on your side. So here I have my layers, body, left eyes, mouth, right eyes. And I have a bunch of lights. I will show you all the lights separate. So in here, I deactivate the overlays. So we have only the render. I go to viewport shading mode. So here is the image with all the lights off. So I turn on light by light so you can see what each light can do in the scene. It's the basic stuff, but I separate in several lights. So I have the main light, rim light, top light, a small light for the tail, a small light for the right upper hand, one other for the left hand for the ears. Okay, so for the material, I will create a basic material. I will rename it body. So this one will be the green ghost. So I touch up a lot of parameters just to follow his knee. The roughness for the reflection and specular, I wear. I use subsurface scattering. So I reduce the size so it would be stronger and I up the scale of the subsurface scattering. And in here, I change the method of the specular. I put it in GDX and I reduce the R level. So we have this kind of flat render with almost no specular. I raise just a bit the transmission, and I will do the same for the emission. This is very important. A lot of the effects come from here. So I put this in green also. And we are done for the material. So the rest of the class will be decomposed and at the glow. 3. Compositing & Glow: Welcome to the second part of the tutorial. So we have our material. Now we're going to add our globe effect. So we're going to split the window in the left window, we're going to add a compositor. So we have to take the und box and just to configure the viewport also, we can hear and we enable always the composer. The result of the composer will be seen in the viewer. So in here with Shift A, we can search for the node we want. So the first one is the render layer. It will show all the objects we have in the scene. And we're going to add our most important node for this lesson is the glare node. So we connect the image output of the render layer in the input of the glare. For now, we're not seeing the result because we have to connect the output of the glare in the viewer. So everything we do now in the glare will be seen in the viewer. So I will step down the threshold, so everything will be affected by the glow. But I don't want the eyes to be affected by the glow. So we're going to teat. We are going to use render layers in here where I create a second layer. So in the right, I'm going to work with view layers, and then in the composer, these will become render layers. So in here, I'm going to create a new collection for the objects. I don't want to be affected by the glow, and I name this collection, no glow. And I will do the same for the layer here also. I'll name it no glow. And on this layer, I just want the light and no glow layer to be visible. I'll come back to the main layer, the glow layer, and in here, the no glow layer collection will not be visible. Okay. Now I have to organize the compositor so we can see the two layers at the same time. So in here, I'll keep the glow layer with the glare. I'll create a new render layer for the no glow objects. And I'll create a new node, Alpha Alpha over node. On the first input, I put the glare on the second one, I put the no glow render layer. And I'll conllect this to the viewer, but we cannot see two layers in the viewbod, so I have to make a render. And to see the result in the render, I will create an output node composite. So this node will allow us to see the result of the no glow objects above the body with its glow. So now it's calculating. Here we have the eyes in the mouth. And here I have the final result. So the glow it's a bit too big. I'm going to reduce it. So I'll try four, no, too small, maybe five, still too small. I think six is a good value. So I'll stick with six and I go into render image. F 12 is the shortcut for this render image. Just let's wait some seconds and we'll see our final result. And that's it, our little ghost cat, with its glow and the eyes and the mouth not being affected by the glow.