5 Ways to Use Surface Imperfections in Octane in Cinema 4D | Greyscalegorilla Product Training

hey chad here from grayscale gorilla and i get this question a lot about our surface and perfection maps that we have in grayscale gorilla plus people aren't really sure where to put them what's the best practice what's the best way to use these things so i went ahead and made a video showing my favorite ways of using surface imperfection maps in octane so let's check it out all right so surface and perfection maps in octane so if you're not familiar with grace go go live plus we have a ton of materials textures and hdris plugins training all sorts of stuff but what we're going to be talking today is surface imperfection maps and of course we have a huge selection of those right here in grace go gorilla plus lots of cool stuff in here so let's just grab one of these and bring it into our octane material here and what they usually are are going to be tileable black and white images used to make things look less perfect hence the name surface imperfection mask so right now i'm going to be using ours but you can go ahead and follow along at home with your own or if you're a member obviously you can use the ones that we provide so usually in octane i'm going to be taking surface and perfection maps and using them in many many different ways and i'm going to walk you through some of my favorite uses for them here in a minute but typically i'm going to be piping them directly into an octane gradient and the reason that i'm going to do that is because i need a visual way to manipulate that gradient remap the values and you know just kind of make it look the way that i need it to look and the reason a gradient works really well for that is it's very visual and interactive with the live viewer so you can see here we can clamp the blacks down on this texture we can clamp the whites in i can grab this texture and maybe grab a uv transform and scale it down a little bit get a little bit more detail in there and maybe we want to even invert this gradient to kind of get a completely different look so a gradient is going to allow us to change how these black to white values are mapped and we can also remap the values themselves you can see i inverted it here we can just bring this back to more of a default state we could bring that black down to maybe 50 percent maybe we want to make a really subtle sort of grunge look something like that so typically though i'm using a gradient in other renders i might use a change range but for octane i'm almost always using a gradient all right so we've dragged in one of our surface imperfection maps from the plus library and i have them all connected already just to save time these other materials here so let's just kind of walk through the uses the most common use that i use these for are going to be roughness and you can see we've got one of our our grayscale gorilla plus smudge maps in here for that one let me go ahead and make that material active so this smudge map here is great because it kind of makes it look like somebody smeared some greasy stuff all over this material and i'm using that into a gradient again to control that surface that roughness and this is going to be going directly into an octane universal material in the roughness channel now if we default this back this gradient back to its default state which is going to be this it's going to be way too rough our values are kind of like all over uh just very very white and you can also mess around with the gamma two so another thing that you could do if you wanted to like you know change the look is you could uh use a linear gamma uh of one or you can use uh a 2.2 srgb gamma whatever works you know it's there's no real rules to this typically you would use linear but sometimes i find that i can get a cool look if i use a non-linear okay so this gradient let's go ahead and remap these values to something a little bit more appropriate because right now a 1 is just way too rough on our surface so let's grab that gradient grab the white and maybe bring it down a little bit until it looks kind of like this and then we're going to take our black and kind of clamp it a little bit so we can see a little bit of that shininess and then the smeared parts right there that's looking pretty good maybe we want to bring that black value up so it's not completely clean and something like this is feeling pretty good maybe a little bit darker yeah so using it subtly they can go a long way if you just kind of use them very subtly in roughness and of course you could you know use other ones doesn't have to be our smudge maps we've got you know crust and all sorts of stuff in here that you could try out okay so the next material i'm going to throw in here is going to be using it in a bump channel so you can see we've got our same smudges happening in the roughness but down here i've duplicated it and i've grabbed one of our crust maps and i put it into a gradient that kind of clamps the black at 50 percent and pushes down the whites below 50 percent to kind of create this look of like pitted almost like a pitted material we reset this gradient back to default it's very very rough because obviously this bump map we don't have any sort of control over the intensity we're doing it all within this gradient so let me just bring these values closer to the 50 50 being kind of our our water level if you will and let's just kind of bring that down and we're getting more of like a general roughness over the surface and of course we could clamp that value in to make it look like it's got some little areas sticking out from the surface but if you want to make it look like at that pitted look again we want that white value to actually push down into the surface so a value lower than 50 percent and then this black value i'm going to change to 50 and we're just going to clamp it down a little bit and now we've got like a pitted look in this bump so another re another way you could use surface imperfections is to actually mask out a decal or a texture of some kind so here we have a sticker uh our octane sticker decal happening here and i'm using an osl material or osl texture that emulates kind of a photoshop layer set with transfer modes and whatnot this is uh in the newer versions of octane i believe it's one of their osl presets but imagine this is just kind of like photoshop so i've taken this png of this of this texture of the uh of the logo and i split out the alpha and i'm multiplying that against another grunge map another surface imperfection map from our crust collection and multiplying that out of on top of our mat of our of our texture so that's going to become the new map for this for this little decal that's going to make it look like it's worn away maybe it's gotten uh it got you know bumped up against some stuff and it's sort of like rubbing off or something so again we're using it now to reveal a different texture and in this case we're cutting through a decal we're using a roughness still and we've still got our bump happening here so we're kind of you seeing all these different ways we can layer these things up and use them in different ways to create interesting looks okay so the next one that i'm going to show you is going to be another one but this one is taking it a little bit further we're using that same technique where we're masking out that decal but you can see we've got some scratches here and we've got some metal underneath and we're doing that with a composite or layered material that is going to allow us to take our our painted material that we had before let's go ahead and solo that and combine that with a iron metal material and use our textures here this in our case we're going to be using the scratch to reveal that metal underneath so if i kind of come over here and i disable that and we look at this you can see we've got some scratches happening so this kind of looks like a painted metal has been scratched away and it's kind of a cool look but yeah it's it's just another way to kind of use it so now in this one we're using it to mask out a decal we're using it in roughness we're using it in bump and now we're using it to reveal a completely different material so this last one kind of takes all of these things combines them and adds a little bit of dirt at the end so if we look at this one at this particular combo we've got our same exact thing but now we've added yet another layer of crust using one of our one of the images from our crust collection here and we're using that to drive this dirt material so if i look at the solo node here you can see we've just got like a really dark kind of flat material and what this is going to do is going to allow us to give that dirt look on top of everything it's very subtle if i change this gradient again this is going into a gradient for that control that we talked about and if i raise up this this white value it's going to make that more opaque it's probably a bit too much but now you can see that dirt on top so now we're kind of using a bunch of different techniques and a bunch of different surface imperfection maps so again we've got one going into this decal we've got another one that's revealing and bumping out this painted material and then we've got another one that's revealing uh the scratches that we've got a great set of scratches by the way if you haven't checked them out like got a ton of really cool surface and perfection scratches and that's revealing this metal material so we're using a ton of different surface imperfection maps in different ways to kind of layer up and create that grunge and create that surface and perfection look and it's relatively uh intuitive and very kind of fun to kind of play around here and mess around with these gradients and get what you need again if you haven't checked out uh grayscale gorilla plus where we've got like tons of surface imperfections tons of octane materials we've got hdris we've got all kinds of stuff over in grayscale world plus including plug-ins and training so if you haven't checked it out i highly recommend it anyway i hope you got something out of this video and i will see you in the next one thanks for watching uh if you haven't subscribed to the channel consider subscribing if you like the video got something out of it give us a thumbs up and if you want to learn more about our surface and perfection maps over on grayscale gorilla plus there's a link down below in the description i highly recommend checking out we've got tons of awesome stuff we've got plug-ins materials textures surface imperfection maps training we've got everything over in grayscale gorilla plus so go check it out and until next time i'll see you around

Channel: Greyscalegorilla

Views: 9,376

Keywords: Cinema 4D, c4d, tuts, tutorials, motion graphics, greyscalegorilla, c4d tutorials, cinema 4d tutorials, octane, octane renderer, octane c4d, octane cinema 4d, surface imperfections, surface imperfections c4d, surface imperfections cinema 4d, chad ashley, chad ashley octane, surface imperfections octane, gsg surface imperfections, greyscalegorilla surface imperfections

Id: M4_OVpS0Xyw

Length: 9min 44sec (584 seconds)

Published: Thu May 27 2021