How to Use the NOISE TEXTURE NODE in Blender! (Beginner Tutorial)

what's up guys justin here with the cgessentials.com so in today's video we're going to talk about how to use the noise texture node in order to add a lot of different looks or variation to your shaders inside a blender let's go ahead and just jump into it so i've got a shader editor window open right here and then i've got my 3d viewport right here and i've just created a simple material and turned the roughness down so that we're getting more reflectivity on our object right here so it kind of looks like some kind of plastic or something like that but let's add a noise texture node so we're just going to do a shift a we're going to add a noise texture node right here and so notice how there's two outputs that come out of the noise texture node right there's the mathematical factor and the color and so in general we're going to use the factor for most things but let's start by dragging the color into our base color of our principle bsdf shader just to kind of look at what this does so there's several different values that are output out of this texture node so for example the scale notice how if we adjust this is going to adjust the size of the noise that's being created so detail is going to add more noise octaves to this so if you drag your detail to the left right you don't have a whole lot of detail in here um meaning that these objects are going to be larger and there's going to be less kind of like noise in between them so the higher your detail goes the more um the more detailed this is going to look but the longer it's going to take to render we can take a look at this a little bit more in a second the roughness is basically going to affect the blend between a smoother noise pattern and a rougher noise pattern so notice if i drag this all the way to the right i'm getting a lot more detail in here if i drag this to the left everything kind of blurs together a little bit more so if i drag this to the right notice how this kind of acts a little bit more like a stone or something like that um if i drag it to the left it's just kind of this like colors blended across here and you're going to do a lot of playing around with these when you're using this to create different effects in blender and then your distortion is basically going to a store distort the effect that's created so notice how if i drag this down and i drag my distortion up um you know if i have my distortion set to zero then my noise is a little bit more natural looking as i drag this distortion up notice how it seems like it's kind of like pulling this noise almost into bands or something like that so the distortion is just going to give you a completely different effect usually i leave the distortion at zero unless i'm going for a specific effect and so notice how you can also adjust the dimensions that this is evaluated in and you're not going to use this too much usually i just leave it on 3d the other dimensions will give you a lower render time but they do give you a different result like if i put it on 1d for example notice how this is just kind of giving me like one color in here right if i go to 2d then i've got more like vertical bands in here instead of um kind of the noise going all the different directions if i go to 3d we'll get the effect we already talked about and then if i go to 4d that just gives me another value that i can adjust in here the w is going to correspond like a fourth dimension um i don't really use the 4d very much usually i stay kind of in the 3d i find that serves what i'm trying to do just fine and so there's a number of different things you can do with the noise texture note so let's say for example that we've got this noise texture node and we don't really need that kind of like rainbow color that we were just creating what we want to do instead is we want to use the factor in order to adjust the way that things react inside a blender so for example let's say i was to drag the factor into my roughness well what that's going to do is that's basically going to add some noise to that roughness so notice how when i do this i'm not getting that like super smooth almost unrealistic looking smooth with no wear on it if i was to just drag this factor in here and then adjust the scale notice what i can do is i can use this to adjust where light is going or going to reflect off of my object right so if i look at this notice how now there are some areas where the light is really reflecting a lot there's other areas where it really isn't so you can use this to do a lot of different things you can use this to kind of like simulate different metal materials or you could also use this to just kind of add some noise to your object so that it looks like it's got some kind of like wear or imperfections and so for some of these these inputs don't really affect things very much so the detail for example on this one it is affecting my result a little bit but i get a lot stronger result by adjusting my roughness in here in other places the detail is going to affect things more but in this case the roughness is really what's going to give me that kind of like more interesting effect in here but again just notice you're going to kind of play around with this in order to create some different results so you can use the noise texture node in order to adjust roughness and so a lot of the time what you might find yourself doing is you might find yourself using this in order to combine colors or materials on your object so we've talked a lot about the color ramp node so if we do a shift a i add a color ramp node and i will link to a tutorial about the color ramp node in the notes down below but let's say i was to plug a color ramp node in here and we're going to set this so that it transitions between maybe like a green material so something like this and a blue material so we'll drag our blue material in here just like this so right now right all this is doing is this is just kind of giving us kind of the average of these two then you can adjust the result by adjusting these sliders right however if you were to take your noise texture node and plug your factor into the factor here now what that's going to do is that's going to give you noise where different colors occur in different locations so for example right now if i adjust my scale up a little bit notice what this is doing is this is kind of splitting this between those different colors and then this kind of gets interesting because you can really affect how strong those two different colors are by adjusting the sliders right here so you can use this to make kind of a strong transition between different colors in order to make these kind of like interesting this is almost like a stone or a granite or something like that or it would be if i hadn't created these uh these different colors here but you can use the noise texture node in order to dictate where those colors occur and so if you wanted to you could drag your color into your displacement over here so you could actually use the noise texture node in order to add displacement at different locations in here and obviously this is kind of a strange result so again there's like certain times when you use this and certain times you wouldn't but you can use this in order to add displacement to your object as well so again kind of an interesting application notice how it really feels like you get better results if you kind of bring your roughness down a little bit but using the noise texture information you can create a lot of interesting things like this separately if you wanted to add your own noise texture node or a separate noise texture node you could do some interesting things with that as well so if i take my noise texture plug my color into my displacement right here notice how i can do things like adjusting my scale and my detail so if i wanted to make this look more like a rock or a stone or something like that i could use a noise texture modifier in order to quickly do that inside of my model and again let's say that we were to unplug our base color here just to get kind of an idea so what you might do right is you might have a material that has a lot less roughness in here but it's got the noise plugged into your material output right here in the displacement so again you could use this to create this kind of like stone looking material really quickly using just your shaders all right so another thing you could do with the noise texture node is you could also plug it in your emission so if we add noise texture right here and we plug our color into our emission color what that's going to do is that's going to give me emission in here but the problem is this isn't very defined right what it's doing instead is it's adding light pretty much everywhere across this whole surface we could just do the same thing or we could add a color ramp node right here in the middle and then we could set this by dragging these closer together so if i drag like my darks and my lights closer together notice how then i start getting a really defined location of my mission like this and you can use your scale your detail and your roughness to set kind of where that occurs but then when you kind of drag this up a little bit and you bring your emission strength up you get this really interesting glow that's in here so you could use your noise texture modifier to set where that happens or how large that happens and then you could set your emission strength over here and you could do this with colors as well so let's say you wanted this to have like a red material or something like this so i could drag this down and then you could use this and kind of like have it scale up or you could also have your mission strength move up and down and honestly if you wanted to you could animate this so that this kind of pulses up and down just by keyframing this value but then the other thing that you can do with all of these noise texture nodes is if you add a mapping node in here as well as a texture coordinate node right here so if you plug your generated into your vector like this then you can adjust things like your location on your surface right here you could also adjust rotation if you wanted to do that or your scale on your different axes so you can add this series of nodes in here in order to adjust how this sits on your object right here so there's a pretty ridiculous number of applications that you can use this for we can talk about those more on the channel in the future if you're interested but for now leave a comment down below let me know what you thought if you have any questions as always thank you so much for taking the time to watch this and i will catch you in the next video thanks guys

Channel: The CG Essentials

Views: 42,882

Keywords: blender, blender 2.82, blender 2.8, blender modifier tutorials, blender tool tutorial, the blender essentials, the cg essentials, thecgessentials.com, justin geis, justin geis blender, blender 2.9, blender 2.91, blender noise, blender noise texture, blender noise texture modifier, blender noise texture node, blender noise node

Id: TGMROCm7MMo

Length: 10min 10sec (610 seconds)

Published: Fri Apr 29 2022