WEBVTT 00:00.330 --> 00:03.930 Welcome to creating a new scene in blender. 00:04.140 --> 00:07.800 In this video you will learn how to create a new scene. 00:08.040 --> 00:16.580 After we've done that we'll see a way of adding light rays in blender using the world volume settings. 00:16.590 --> 00:20.950 There are other methods to doing this as well just to let you guys know. 00:21.090 --> 00:24.710 However we're going to be using the world settings as it works best. 00:24.720 --> 00:29.770 In our case with the building we're doing so let's hop straight on over in a blender. 00:30.790 --> 00:36.210 Okay so we're over in blender at the moment and what we're about to do with the volume settings. 00:36.340 --> 00:39.740 Well the it only works with spotlights. 00:39.760 --> 00:45.220 So the environmental lighting and any other sun lamps or any other lamps that you've got in the scene 00:45.250 --> 00:50.860 where she worked for volumetric lighting which is a bit of a shame but that's how blender is at the 00:50.860 --> 00:51.370 moment. 00:51.370 --> 00:57.270 Of course it gets updated regularly so more and more options may become available in the future. 00:57.610 --> 01:02.080 So first of all what we're going to do is create a new scene because we're changing fundamentally how 01:02.080 --> 01:07.730 this scene is going to be lit and some of the other settings we can go into a new scene. 01:07.930 --> 01:10.270 And then we don't need to worry about it now. 01:10.420 --> 01:15.370 You may have noticed seen at the top in the outliner or you may not have paid much attention to it and 01:15.370 --> 01:21.910 just worked further down here each individual scene is self-contained it contains the render layers 01:21.910 --> 01:27.640 the world and all of the mesh and other objects you have in your scene. 01:27.670 --> 01:33.830 Now on top info ahead a bar there's a little plus button next to scene and at the moment. 01:33.880 --> 01:35.440 This is not got a names. 01:35.480 --> 01:37.250 I'm just going to call it Gothic church. 01:37.260 --> 01:39.340 Now my scene is actually named. 01:39.580 --> 01:41.770 And we can see it's named up here as well. 01:41.770 --> 01:47.170 Offic church now it clicked the pause button here and it gives us a couple of options. 01:47.180 --> 01:52.390 We can create a brand new scene so it'll be an empty seat in this we used to when we opened a brand 01:52.390 --> 01:53.070 new blend. 01:53.200 --> 01:58.450 Now this is useful if you're working on something else that's got something to do with your Gothic church 01:58.450 --> 02:03.390 or your office etcetera that you're working on and you want to keep it all in one blender file. 02:03.670 --> 02:11.020 We can copy the settings from one to another but with no objects as says Caesar we can link objects. 02:11.020 --> 02:15.520 Now of course the good thing about linking the objects is it means that anything you change in the scene 02:15.520 --> 02:21.880 one will go across to the second scene as well that were about to create a link object data so we can 02:21.880 --> 02:23.920 do that as well. 02:23.920 --> 02:25.690 And finally a full copy. 02:25.930 --> 02:31.620 Now that will make a copy but changes will not go backwards and forwards. 02:31.750 --> 02:34.040 And I am going to select all copy in this book. 02:34.090 --> 02:39.370 In this case because I just want to work on it as is in isolation. 02:39.370 --> 02:44.500 Essentially something go ahead and click for copy in its cool Gothic church as the one we used to this 02:44.500 --> 02:50.180 by now and Im going to call this light rays because thats what it's all about. 02:50.320 --> 02:54.750 So I've got this indoor scene here and we want to add light rays to it. 02:54.800 --> 02:56.920 Now there are various ways of doing this. 02:56.950 --> 03:04.300 But the best one is the world option so we go in the properties menu here to the world options itself 03:04.840 --> 03:12.670 and under volume there's nothing currently selected So let's go to volume and where it says none we 03:12.670 --> 03:17.050 can change that and it needs to save volume scatter. 03:17.260 --> 03:19.830 So I'm going to go ahead and click on volume scatter. 03:19.960 --> 03:26.410 Now a density of one is relatively thick and that's not going to produce very nice results. 03:26.410 --> 03:33.940 Now before we go and start playing with these options I'm going to go into the render tab of the properties 03:34.210 --> 03:35.430 and just scroll down. 03:35.440 --> 03:40.970 And I'm going to change my light path's to direk light. 03:40.980 --> 03:47.170 That's just going to make it nice and quick to render our case and now that that's been done I'm going 03:47.170 --> 03:53.020 to go back to World properties and on the density I'm going to turn that down to about Point one for 03:53.020 --> 03:54.120 the moment ask. 03:54.320 --> 03:57.330 See how that goes and adjust it from there. 03:57.340 --> 04:04.630 The other thing that we may want to do here just to speed up our volumetric calculations is under the 04:04.630 --> 04:11.800 settings we can turn on some modernness and we can put a tick in that and that just makes it quicker 04:11.800 --> 04:12.610 to render. 04:12.820 --> 04:15.100 Now in this it could be rectangular. 04:15.100 --> 04:23.590 The volume settings shift here the equal were is good for outdoors and the distance is for this or indoors 04:23.590 --> 04:26.750 lit up by the sun outside and things like that so. 04:26.770 --> 04:32.540 Or if you've got a mixture of things you can go for multiple important so I'm going to set that to distance. 04:32.960 --> 04:33.360 Okay. 04:33.370 --> 04:38.770 So now that I've got the scene roughly set up let's just move on over into rendered mode and we can 04:38.770 --> 04:41.110 see that it's pretty dark. 04:41.110 --> 04:47.830 And the reason why it's pretty dark is because the light in our scene comes from two places a sunlamp 04:47.830 --> 04:50.610 that's placed in the scene and the environment. 04:50.620 --> 04:55.960 None of which affect the lighting triangulations were in doing volume. 04:56.020 --> 05:01.780 So what we need to do here is go over and find our lamp. 05:02.500 --> 05:05.110 Or if you've not got one you're going to have to go and create one. 05:05.140 --> 05:11.650 I have got a sunlamp in my scene so I can go ahead straightaway and change that from a sunlamp to a 05:11.650 --> 05:13.450 spot lamp. 05:13.450 --> 05:18.670 Now that's not going to be good enough just yet because what happens with the spot lamp is the light 05:18.730 --> 05:19.810 falls off. 05:19.810 --> 05:22.300 The further you get away from it. 05:22.330 --> 05:24.950 So we need to make sure that that's constant. 05:25.090 --> 05:30.050 So what we can do here is go into the node properties of that. 05:30.220 --> 05:37.570 Particular lamps so we go to the node editor and we can see that there's a lamp out at the surface and 05:37.570 --> 05:41.380 it's an admission which is great and the strength is currently at five. 05:41.380 --> 05:45.870 If I put that 50 we might be able to see it's 500. 05:46.330 --> 05:52.650 No it's too far away it's not actually reaching the church building itself at the moment. 05:52.960 --> 06:00.160 So what we can do here is set this strength the light fall off the further away it is we can set that 06:00.160 --> 06:04.970 to a constant value so acts more like the sun as it goes through the scene. 06:04.980 --> 06:07.160 So going to add a node in here. 06:07.970 --> 06:11.240 So we go to out and go to colour. 06:11.330 --> 06:13.880 You see there's an option here like to fall off. 06:13.880 --> 06:18.340 Of course if you know it contains fall off we can go to search and type in fall off. 06:18.350 --> 06:19.470 And there it is. 06:19.700 --> 06:27.110 So now we've got that we can line up for constant outputs of the light fall off with the strength and 06:27.110 --> 06:34.220 then turn the strength up to three 50 400 something along those lines. 06:34.220 --> 06:37.250 Now it doesn't seem to be affecting our scene at the moment. 06:37.250 --> 06:39.550 There's a couple of things that we need to check. 06:39.560 --> 06:42.300 I'm happy with everything as it set up here. 06:42.440 --> 06:46.250 But what I don't know is where the lamp is and where it's pointing. 06:46.250 --> 06:49.920 So that's quite important so I'm going to go into solid shaded mode. 06:50.180 --> 06:50.500 Okay. 06:50.510 --> 06:53.840 So the lamps over here and it's pointing into the building. 06:53.840 --> 06:56.740 So that looks pretty good to me. 06:56.810 --> 07:01.480 Quickly render that and see if it's lighting up the outside we can see here is getting through here. 07:01.580 --> 07:09.140 Now I think that the light is actually being absorbed by the volumetric shading that we've got going 07:09.230 --> 07:10.930 on in the environment. 07:10.940 --> 07:17.300 So what I'm going to do here is still looking from the outside because that lamp is well it's well it's 07:17.300 --> 07:20.140 not being isn't even lighting up the ground so that's no good. 07:20.330 --> 07:25.610 Let's go ahead and go to the world properties here and scroll down the density here let's make it 10 07:25.610 --> 07:28.980 times lower Let's go nought point nought one. 07:29.100 --> 07:29.930 Aha. 07:30.170 --> 07:31.520 That is much better. 07:31.520 --> 07:34.520 Let's see what that looks like inside as well. 07:36.340 --> 07:39.560 How that is looking much much better now. 07:39.600 --> 07:45.060 Now it's still a bit dark in there and that's where we can use a couple of tricks to bring the light 07:45.060 --> 07:45.960 levels up. 07:45.960 --> 07:53.460 Now the moment because we've got the light paths on the render tab set a direct light there's not that 07:53.460 --> 07:55.200 many bounces going on. 07:55.200 --> 08:01.260 Certainly by changing that to limited global a nation for global illumination or just changing the settings 08:01.260 --> 08:01.860 here. 08:01.890 --> 08:09.060 So for instance increasing the number of diffused bounces the volumetric bounces as well will help here. 08:09.090 --> 08:14.370 So what we can do here is literally just render this out and see what it looks like and then take a 08:14.370 --> 08:15.630 base from there. 08:15.630 --> 08:22.620 Again make sure that you've got a relatively low resolution because the volumetric calculations is going 08:22.620 --> 08:24.810 to take a while to do. 08:24.810 --> 08:29.190 Now of course this I don't know quite how it's going to look when it's finished. 08:29.340 --> 08:31.200 It looks like we've got some rays coming in. 08:31.200 --> 08:32.750 It's looking pretty good there. 08:32.940 --> 08:35.430 Okay that is looking pretty good. 08:35.460 --> 08:40.730 Now it's going to pause the render there and I'm going to switch to another render slots to perform 08:40.730 --> 08:47.420 a change test but a not would diffuse back down to zero and go ahead and render that again. 08:47.440 --> 08:53.070 Now this is going to be slightly quicker in its processing but it's going to have less bounces in the 08:53.070 --> 08:53.630 scene. 08:53.640 --> 09:01.530 Now that is a style choice of course if you want to add more realism with the different bounces but 09:01.530 --> 09:08.580 this is going to end up much darker because light is not going to be bouncing off certain areas and 09:08.670 --> 09:13.320 we can see already it's had a much in well it looks much more contrasty. 09:13.320 --> 09:20.630 So that's with one bounce enabled so you've got some details where the light is not directly hitting. 09:20.700 --> 09:27.420 And if we go to here we see that it's a much darker image but I think that's a bit more atmospheric 09:27.420 --> 09:32.790 as well so there's a there's a kind of a toss up there between your style choice that you want to go 09:32.790 --> 09:35.140 for that looks pretty good. 09:37.150 --> 09:41.160 And of course with that it's time for a challenge. 09:42.700 --> 09:50.380 I would like you to go ahead and add volumetric lighting so you may have to use s.p. you rendering for 09:50.380 --> 09:53.420 this depending on your graphics card. 09:53.530 --> 09:56.170 And depending on your version of blender as well. 09:56.470 --> 10:00.120 So bear that in mind if you're if it's not working for you. 10:00.430 --> 10:08.220 Create a new scene and then add some volumetric lighting to your new scene and see how that comes out. 10:08.310 --> 10:10.770 Borzov video now and give that a go. 10:13.770 --> 10:14.470 Okay guys. 10:14.490 --> 10:15.460 Welcome back. 10:15.460 --> 10:20.580 I'm going to hop back into my blend file now and just see if there's any optimizations that I want to 10:20.580 --> 10:24.280 make and see if we can make this scene even better. 10:25.290 --> 10:27.170 Okay so that's looking pretty good. 10:27.180 --> 10:34.340 Obviously that's pixillated because of the amounts I've turned down the resolution I've put it at 25 10:34.350 --> 10:36.320 percent of 10 ATP there. 10:36.510 --> 10:39.120 Amber I quite like that dark atmosphere. 10:39.120 --> 10:45.810 And I think I could if I could just bring that up just a little it would probably make a much better 10:45.810 --> 10:46.920 impact on my scene. 10:46.920 --> 10:51.060 So with that in mind I'm going to try. 10:51.090 --> 10:52.650 Well let's scroll down here. 10:52.650 --> 10:59.040 Let's try turning up the amounts of bounces that happen through the volumetrics of the light that's 10:59.040 --> 11:00.050 coming in. 11:00.060 --> 11:05.670 Let's see if turning that up adds to the ambience of the room I don't want it much lighter than it already 11:05.670 --> 11:06.220 is. 11:06.270 --> 11:10.380 Adding one to the use she made it too bright for me. 11:10.710 --> 11:15.900 Let's go ahead and render that and see how it looks and obviously pick and who render slop before I 11:15.900 --> 11:16.630 do so. 11:16.770 --> 11:20.020 Otherwise I won't be able to compare one to the other. 11:20.490 --> 11:24.060 Okay so this render here is coming up to the end of it. 11:24.260 --> 11:29.380 And is it why it's different to the first one it's certainly lighter. 11:29.610 --> 11:35.580 And that is adding a lot of definition here in the in the pillars in the columns that are there. 11:35.670 --> 11:39.660 And I like that's that's all bringing that forward. 11:39.780 --> 11:42.580 It has made this scene a little noisier. 11:42.810 --> 11:45.380 Presumably because of those volumetrics. 11:45.460 --> 11:49.530 So what I need to do here of course is render it at a much higher sample rate. 11:49.530 --> 11:54.970 I'm happy with how that's looking at the moment so I'm going to render it now at I'm going to renderer 11:55.000 --> 12:00.870 a higher resolution for a stance that's going to take longer to do and I'm going to render it. 12:00.870 --> 12:03.410 I'm going to do the full screen render and then leave. 12:03.540 --> 12:06.750 Five hundred might be a little high but I'm happy to wait. 12:06.750 --> 12:11.850 So I'm going to go ahead hit render and I will see you guys back in a few moments. 12:12.000 --> 12:19.470 Okay so here we go here's the final rendering is still a bit noisy but more and more samples will certainly 12:19.470 --> 12:20.530 sort that out. 12:20.820 --> 12:24.930 But this is looking pretty good it's got the right sort of definition in there. 12:24.930 --> 12:29.160 I can see some detail in the dark areas which is awesome. 12:29.160 --> 12:30.950 That's exactly what I wanted. 12:30.960 --> 12:32.280 How did yours turn out. 12:32.280 --> 12:38.390 I'd love to see them remember to share them with us so we can all relish in your wonderful creations. 12:38.460 --> 12:42.130 Of course as always I will see you guys in the next lecture.