EEVEE Blender 2.8 | Beginners Guide | Part 2 | Volumetrics

hello and welcome to Cabot Media I'm grant Abbott and this is part 2 of getting the most out of Eevee for beginners this particular episode looks at volumetrics do check out my website for other courses and do check the description for other videos in the playlist so if we want to get nice-looking volumetrics there's a couple of things we need to have ticked first of all let's put something in our scene it's a bit more interesting so I'll delete the default cube and add a monkey and I will subdivide it twice with control two and that will give it two subdivisions and I'll right-click on it and shade smooth now in order to get volumetric to look nice you'll need some lights in your scene so here's one light I'll just grab that so it's a bit closer to my monkey left click to select an G to grab shift D we'll duplicate that so I can create another one over here and two lights will be fine for now these are just point lights so if I go to my lighting tab you'll see they're on the point light setting that means they just shine everywhere so sort of omnidirectional lighting well it's also quite nice in EVR spotlights maybe I'll change one to a spot light as you can see there you can use this yellow thing to pull the spotlight around and make it point at things and if you move over an object it will sort of snap to that object and point to that object which is quite handy I'll move this point light to the other side like that with the spotlight settings you've got things like the size here and you can see the different things that it does this area here is the fade so if I press the blend you can see that going down and the size is obviously the size of the coat so we'll have it about there let's go to the shading tab now or the shading workspace and we can't see much because we're in look dev mode we need to go to rendered mode to see our volumetrics and lighting effects so again not much is going on here but we're seeing the effects of the spotlight and the point light on the monkey at the moment the first thing you want to set up is your world so we go down to the shader editor and click on world and we need to add in a volume scatter node so shift a to add or you can go to the add menu here but shift a is the shortcut shader volume scatter and you can bring that down there drag and drop the volume to the volume and then we have some fog in our scene we can hardly see anything though if it doesn't appear straightaway if you just move around your scene slightly the effect suddenly appear at the moment it's too dense so let's turn down the density 2.1 and you can see the volumetrics coming in now if you don't see the volumetrics working you need to go over to your render tab and make sure volumetrics is ticked now if I click on the disclosure arrow you can see that volumetric lighting now seems to be default in blender 2.8 and I don't think that's going to change but if it does you need to tick the boxes here let's have volumetric shadows as well that should give us some shadows as well but we can't see them that well now to increase and improve our volumetrics you've got the tile size here if I bring this down it will bring more quality out so 4 pixels for example and when you finally render you can turn it down to 2 pixels you can also turn the samples up to 128 do be aware that this will have more effect on your computer's performance so the more detailed you go in here there's slightly slower render times but more to do with your instant render when moving around the scene now we're starting to see an effect on the monkey and in our scene and with the volume scatter node you might want to change the anisotropy and that's to do with how the light scatters so basically just fiddle around with that until you get something you like I think about there looks good I'm starting to see some shadows let's sort of look I'm looking for what you'll want to do as well is experiment with your Lighting's so with my spotlights selected I can then go into my light and let's say change the color that looks quite interesting also the power is set in what's now so it should be that if you go from cycles to evey they should be very similar and you can think about wattage in terms of your lightbulbs I would say 50 watts is your average light bulb so it's not particularly bright and for film lights a thousand watts is not unusual and now we if we change the spotlight size you can see the effect that that's having and the blend just there and it's much more visible now at the moment I don't think this looks so great and that's because our background color is gray if we change this to black that's helping a bit and maybe the color of our fog we can sort of make it slightly bluey or something it's looking a bit better now we'll make a difference how zoomed in to your object you are so if I'm zooming out now you can see more effects of the lights and the fog and zooming in it's more scattered I think to get the full effects of volumetrics you need more objects in your scene and therefore more shadows happening also volumetrics are really nice when you have camera movement so I would say there's two rules for volumetric lighting the first one is using lots of objects and lots of lights in interesting locations Curtis Holt has a really nice tutorial on that about using lighting for effects links in the description and the second one of my rules is to have some camera movement to really see the full effects of the fog now one other thing that's nice to do with volumetrics is what's called flags or cookies those are things that go in front of your lights and they kind of create shapes out of your light a good example of this if I delete one of these lights for now and I'm going to use this point light here I'm going to click on the light and press shift s cursor to selected that means any new objects will be added here shift a and I'll just add in a UV sphere now that's completely covered our light I'm going to go back to my layout so I can see what's going on a bit easier and I get the full viewport let's go to edit mode and face mode edit mode with tab and face mode with 3 on your keyboard and I want to deselect all by tapping a twice or pressing alt a to remove any selection and then select random so select menu then select random now if I press delete to get rid of these faces I'm left with some areas that the light can go through so now let's go back to shading and you can see suddenly we see an interesting effect I just come out of edit mode and click off my object so you can see the effect in two ways one on the volumetrics we're getting some interesting shadows in our fog but we're also getting an effect on our monkey now again if I move my camera it's tricky to see because the live update isn't doing so well at real-time rendering but you can sort of see the effects of that volumetrics what can be really interesting is if you take your object and you rotate it around and animate that rotation and lastly do remember to add a bit of color to your lights that's always a nice interesting look so there we have it volumetric sin Evie do looking out for the next episodes and do remember to go across to my website all the links are in the description thanks for watching and I hope this helps

Channel: Grant Abbitt

Views: 35,859

Keywords: understand, texture, paint, how, to, learn, blender, tutorials, 3d, art, graphics, game, material, guide, easy, sculpting, sculptor, sculpt, painting, volumetric, smoke, fog, scene, rednering

Id: -M02CH63MFI

Length: 6min 31sec (391 seconds)

Published: Thu Jun 06 2019