WEBVTT 00:00.530 --> 00:07.490 Welcome to using displacement maps in this video you will create real detail using a texture. 00:07.640 --> 00:11.650 So we're going to take this texture and use it to actually modify geometry. 00:11.690 --> 00:15.550 So we're going to use a displacement map to alter geometry. 00:15.640 --> 00:20.630 You'll understand that you need geometry first in order to modify of it's not there. 00:20.630 --> 00:22.900 Then there is nothing to modify. 00:23.240 --> 00:30.410 We use the displacement influence in blender render and will also use the displacement modifier in a 00:30.410 --> 00:33.930 similar manner as well with see how you can do that render time. 00:34.040 --> 00:37.280 And we'll see how you can do in reality as well. 00:37.640 --> 00:42.290 Now talking about reality there is an important reality and that's the fact that going back to the point 00:42.620 --> 00:46.640 that in order to do this you need geometry in order to modify. 00:46.640 --> 00:49.160 So it's not suitable for certain things. 00:49.340 --> 00:55.190 So it's not really suitable for generating a final brick wall for instance it would be quite tempting 00:55.190 --> 01:01.820 to use a black and white chequered image so to speak to produce a brick wall. 01:01.850 --> 01:04.960 But at a very high poly count is required. 01:05.120 --> 01:08.350 Now that's fine if your computer can handle it. 01:08.360 --> 01:09.260 Mine can't. 01:09.260 --> 01:12.460 For doing hey you're going to have a supercomputer. 01:12.500 --> 01:14.790 In fact you end up with a brick wall. 01:14.930 --> 01:20.130 Being a silly silly high polygon count when it's completely unnecessary. 01:20.150 --> 01:27.910 What would be better is combining a low polygon bumping map so it's almost the right shape but not quite. 01:27.980 --> 01:34.220 With a nother displacement map or even a normal map and will get onto those shortly in order to fake 01:34.220 --> 01:39.350 some additional geometry as well where we can't really have too many polygons. 01:39.440 --> 01:41.990 Now they are useful for applying details. 01:42.020 --> 01:50.570 For example scales on a lizard fish or Dragon how or if you don't have a bump map yet we can use a generated 01:50.570 --> 01:57.670 one to create geometry and then bake that back or come onto baking very soon. 01:57.770 --> 02:02.420 We can bake that back down into a texture and then reapply that so there's lots of techniques we can 02:02.420 --> 02:04.020 use going backwards forwards. 02:04.150 --> 02:06.230 Now talking about creating geometry. 02:06.290 --> 02:12.860 It they are great for creating or generating geometry and then of course optimizing so not leaving that 02:12.860 --> 02:19.790 is your final model leaving it as a halfway point to get used to certain positions much more quickly 02:20.030 --> 02:22.610 than it would be possible to do otherwise. 02:22.760 --> 02:28.430 And they're great for larger items like touraine where fine detail is not required. 02:28.760 --> 02:34.660 With a large train you can make it Bumpy very quickly by using displacement maps. 02:35.000 --> 02:40.540 So let's go play with displacement maps now and applying them and hop over into blender. 02:42.250 --> 02:48.580 Okay so we're over in blender and there are a couple of things to show you the first way of doing this 02:48.580 --> 02:52.930 displacement is only going to happen at render time. 02:52.930 --> 02:58.380 So that's either when you're in the rended view of your view ports your 3D view poor or when you go 02:58.410 --> 03:02.050 hit F 12 or go to render and render image. 03:02.230 --> 03:09.360 Okay so we'll start off with Blender render so we need to switch our rendering engine to a render and 03:09.370 --> 03:11.490 once we've done that we've got to keep in front of us. 03:11.500 --> 03:13.090 Let's go create a texture. 03:13.090 --> 03:18.250 In order to use now I'm going to be really quick about this and I'm going to use a generated texture 03:18.580 --> 03:23.210 tone and go to our textures tab and go new. 03:23.350 --> 03:28.070 I'm going to go to where it is type and change that to valeri Noise. 03:28.090 --> 03:34.120 Now I've chosen or annoy simply because I know it exists on cycles as well so I can show you something 03:34.120 --> 03:35.890 that's very similar. 03:35.890 --> 03:38.260 Now that we've done that we need to go to the OR. 03:38.290 --> 03:41.230 Sorry you need to scroll down have the material. 03:41.290 --> 03:44.300 Yes we got the material so we can scroll down. 03:44.310 --> 03:50.470 No need to go to material first for this lot to appear and I'm going to unstick colour because I don't 03:50.470 --> 03:55.740 want it to affect the colour and unrealistic displace and turn the display up as much as possible. 03:55.750 --> 03:59.670 And again we dont see anything at the moment we need to switch in surrendered mode. 04:00.940 --> 04:03.700 And that is not looking too great at the moment. 04:03.720 --> 04:07.010 Its had zero effect on our model. 04:08.240 --> 04:11.760 We look up and down weve got text here type none. 04:11.960 --> 04:14.110 That's why that's changed back to boring. 04:14.330 --> 04:16.520 There we go it's doing the displacement. 04:16.530 --> 04:20.560 That's I wanted it to do and it's only moved some. 04:20.600 --> 04:26.870 Oh yes we've only got eight vertices in total to move so it can only move eight vertices even at render 04:26.870 --> 04:27.530 time. 04:27.530 --> 04:32.550 So what will need to do here is give it some more vertices to actually start moving about. 04:32.660 --> 04:39.940 Now of course when we're dealing with a cube there are several ways to add more geometry to the model. 04:39.940 --> 04:41.960 We could go in and just add more geometry. 04:42.080 --> 04:47.570 I could subdivide that's one quick way but I'm going to use a subdivision surface modifier that is going 04:47.570 --> 04:50.960 to change this cube into more of a ball shape. 04:51.140 --> 04:55.910 But we will see that this is the effect we get I'm going to zoom in and have a look at almost set the 04:55.910 --> 04:57.320 shading to smooth. 04:57.350 --> 05:00.670 That is a pretty cool affect and very quick. 05:00.710 --> 05:05.330 I haven't done anything to set this up other than those few quick settings. 05:05.330 --> 05:10.450 Now do bear in mind this is at render time so we switch the viewport to solid mode. 05:10.480 --> 05:11.960 It still looks like that board. 05:12.050 --> 05:15.940 If we go back to rendered mode you'll notice that this is what it looks like in the viewport. 05:15.950 --> 05:20.200 But when we go and render it it kind of looks horrible. 05:20.300 --> 05:26.020 And the reason for that is in the subsurface modifier settings the render settings are only set to two 05:26.260 --> 05:27.560 subdivisions. 05:27.590 --> 05:33.140 If I set that back at six and hit the render it looks the same as it does in the viewport. 05:33.140 --> 05:35.150 So there's something to watch out for there. 05:35.210 --> 05:38.840 So let's have a quick look now at the cycle's variant of this. 05:38.900 --> 05:45.800 Now this is an experimental feature so we're only going to go over it very quickly and I suggest that 05:45.800 --> 05:50.970 after turning your experimental features on you turn them off again after we've played with it. 05:51.050 --> 05:57.560 So I'm going to have a 3D view open and I'm going to have a node editor open. 05:59.150 --> 06:05.450 So the first thing to do is on the feature sets on your render properties change it from supported to 06:05.450 --> 06:08.460 experimental and be warned from here. 06:08.460 --> 06:11.280 Dragons may approach and destroy everything. 06:11.300 --> 06:16.600 Not really but it does enable some features that may crash blend so used with caution. 06:16.790 --> 06:23.530 Okay so now we've done that's what we need to do is go in Apply the texture to displacement. 06:23.530 --> 06:28.370 So first of all we need to make sure we've got a material on a go ahead and click use notes and in the 06:28.370 --> 06:33.130 node editor we can see we have a material output and this diffuse. 06:33.170 --> 06:33.940 That's fine. 06:34.070 --> 06:37.290 We need to go ahead and add ourselves a texture. 06:37.310 --> 06:43.190 And here we go we have four annoying again and I'm going to plug the factor onto the colour and just 06:43.190 --> 06:44.210 check what it looks like. 06:44.390 --> 06:45.480 That's what it looks like. 06:45.500 --> 06:50.270 You can see there that this is a bit larger than it was before some of the increase to this scale. 06:50.270 --> 06:50.690 There we go. 06:50.700 --> 06:51.950 That's about right. 06:51.950 --> 06:55.840 So now I'm going to take this factor and plug it into displacement instead. 06:55.850 --> 07:02.360 Now this will initially give us like a bump map rather than actually changing the geometry at render 07:02.360 --> 07:02.960 time. 07:02.960 --> 07:11.660 However if we go to the meche Data properties here and scroll down there's this new area here where 07:11.660 --> 07:13.550 we can see displacement. 07:13.550 --> 07:19.970 Now I am just going to do a quick tweak and on our lamp settings make it use the sun so it's just a 07:19.970 --> 07:25.200 bit brighter and a bit more uniform light across that says Click on our object. 07:25.220 --> 07:30.500 Again go to the data property scroll all the way down and displacement and as you can see at the moment 07:30.520 --> 07:32.570 it is set to. 07:32.870 --> 07:38.300 If we change that to true we can see it's actually changing the underlying geometry. 07:38.300 --> 07:45.470 But once again it does require geometry in order to work so items subdivisions down you can see that 07:45.530 --> 07:50.660 eventually it ends up back at a cube again and not this wonderful shape. 07:50.660 --> 07:53.010 Now in fact if you have both turned on. 07:53.030 --> 08:00.990 So if we go back to the meche data here and go to displacement go to method and do both. 08:01.130 --> 08:05.210 We get a a much crisper and cleaner appearance. 08:05.210 --> 08:07.940 I'm not sure which one I actually like the best. 08:07.940 --> 08:11.470 I think I do like this one but both obviously have their places. 08:11.470 --> 08:14.840 Now bear in mind once again this only appears at render time. 08:14.840 --> 08:18.130 Not when you're looking at the model and working in solid mode. 08:18.230 --> 08:24.820 Not when you're working in text mode or even material mode so that's worthwhile bearing in mind. 08:24.830 --> 08:31.640 Now let's go in and use these subdivision surface modifier to give us some geometry and actually displacement 08:31.640 --> 08:35.050 modify as well so we can see what's going on in the viewport. 08:35.120 --> 08:38.300 So I'm going to unplug this of Laura I texture. 08:38.300 --> 08:45.560 I'm going to get rid of it and I am also going to go to my render propertys and change the feature set 08:45.560 --> 08:49.060 back to support it because I don't want blender crashing on me. 08:49.070 --> 08:51.350 That's quite disastrous when that happens. 08:51.350 --> 08:54.570 So I'm going to move this window up and get rid of it. 08:54.740 --> 08:59.270 And there we go back to our ball and we are in material mode at the moment some just going to switch 08:59.270 --> 09:00.420 back to solid. 09:00.800 --> 09:01.640 So now we're in here. 09:01.640 --> 09:08.720 We can go to our modifiers tab and add in a displacement modifier and the displacement modifier is under 09:08.720 --> 09:10.550 the deform column. 09:10.580 --> 09:12.890 It's the fifth one down there displace. 09:12.950 --> 09:18.590 Now you see it just gets slightly larger to begin with and that is simply because it is just displacing 09:18.620 --> 09:22.790 everything as if it had a uniform texture applied to it. 09:22.790 --> 09:25.950 Now bear in mind you can do you rhône textures if you'd like. 09:25.970 --> 09:28.730 In this case I'm going to use another generated one. 09:28.940 --> 09:32.000 So in the texture's area of the display some of them are hit. 09:32.180 --> 09:33.980 Or is it already stored. 09:33.980 --> 09:36.010 That's the first things that are put in generating another one. 09:36.010 --> 09:38.530 So let's go to news this thing. 09:38.600 --> 09:44.040 I think there looks like a paracetamol pill or something but I click on that little icon there and he's 09:44.040 --> 09:50.180 actually taken this over to the texture's tab and under this dropdown we can see we've got displace 09:50.210 --> 09:52.010 brush and brush mask. 09:52.010 --> 09:55.810 At this point we do want to make sure it's only affecting the display. 09:55.970 --> 10:01.490 I wanna click on this drop down here and see there's already two in memory and the techs I think that's 10:01.490 --> 10:06.020 what we were using with the blunderingly so we can click on that and there we go we've got the vore 10:06.020 --> 10:09.770 annoy texture again and we've got some ways of altering it. 10:10.070 --> 10:12.470 So now we've actually got a texture modifying. 10:12.480 --> 10:19.370 Ah geometry we can tweak it's a bit more by going to the modifiers tab and just playing about with them 10:19.460 --> 10:24.710 that the moment we can see what texture it's using the direction so you can actually have all of these 10:25.010 --> 10:31.040 modify in the y direction and you get this kind of I don't know what to describe that as. 10:31.040 --> 10:31.880 But I'll leave. 10:31.880 --> 10:33.070 I'll leave you guys. 10:33.270 --> 10:39.520 No generally discussions if what you think that looks like windswept I think I'm thinking of going to 10:39.620 --> 10:44.690 leave it to normal so it goes out sort of evenly across the entire model text record. 10:44.750 --> 10:52.880 Well if it was a mapped you v texture with very specific displacements i.e. very specific colours we 10:52.880 --> 10:57.430 could go in here and switch this from local to u v and use a u v map. 10:57.760 --> 11:03.900 This group is very powerful it allows us to control what parts of our model are affected by this particular 11:03.900 --> 11:04.790 modifier. 11:05.680 --> 11:12.400 And we've got mid level and we can see that by moving that changes where the modifier is taking place 11:12.430 --> 11:18.760 and the strength of course changes the actual impact that this is making on our model. 11:18.790 --> 11:25.270 So if it's set really low we get a nice simple defective it's set really high. 11:25.390 --> 11:28.610 We get a more explosive effect. 11:28.690 --> 11:34.300 Of course if you go into the negative numbers instead of a V blacks representing low points they start 11:34.300 --> 11:35.630 to represent high points. 11:35.650 --> 11:37.600 Then you get a completely different effect. 11:37.600 --> 11:43.140 In fact I think that when you move it out like that it looks like one of those flowers. 11:43.210 --> 11:44.160 Is it a hyacinthe. 11:44.170 --> 11:48.170 I don't know I don't know my flowers at all so I'm probably completely wrong there. 11:48.190 --> 11:54.190 So there's lots you can do and it's very quick you can see how quickly we've managed to actually get 11:54.190 --> 11:59.770 to this point with very little modification of the geometry in fact still underneath remember it is 11:59.770 --> 12:00.550 a cube. 12:00.700 --> 12:04.800 Now what you can do is in the modifiers tab itself. 12:04.810 --> 12:09.460 There's a little thing that looks like a cube with four dots on it and that will display the modifier 12:09.490 --> 12:10.290 in edit mode. 12:10.380 --> 12:14.500 And that's kind of fun because when you're in edit mode that does mean now you can grab the C's and 12:14.500 --> 12:20.620 move them about and change the underlying shape that these modifiers are being applied to and obviously 12:20.650 --> 12:24.290 generates new shapes coming from there. 12:24.440 --> 12:29.550 So the other thing we can do here is just try a couple of different textures so we can go into the textures 12:29.550 --> 12:35.180 tab and from vore and I choose noise and wow that looks a mess. 12:35.200 --> 12:36.450 Which isn't surprising. 12:36.610 --> 12:41.290 And we can go into the modifiers tab go down to the displacement. 12:41.290 --> 12:43.900 Having it this way around have it set that way round. 12:43.910 --> 12:52.690 And while we've got ourselves a ball rush or or spiky Caterpillar or something and we can look at this 12:52.750 --> 12:55.310 in render mode as well. 12:55.400 --> 12:56.740 Oh I've lost it for a moment. 12:56.740 --> 12:57.580 There we go. 12:57.580 --> 13:02.690 So we're looking at it in rendered mode and if we go ahead and render that bar that's quite cool. 13:02.710 --> 13:07.080 So that is like a ball rush on the end of a ball rush. 13:07.420 --> 13:11.110 There's that one thing you know I'm thinking of a thistle or something on those lines. 13:11.110 --> 13:11.740 I don't know. 13:11.740 --> 13:13.210 I'm rambling on now. 13:13.420 --> 13:17.050 And of course that usually means it's time for a challenge. 13:17.140 --> 13:21.430 I'd like you to go ahead and make your ground more interesting. 13:21.430 --> 13:26.980 So what I mean by that I would like you to use the displacement map and the displacement modifier to 13:26.980 --> 13:32.590 create a not so flat ground around your model is just going to create a bit more of a natural feel and 13:32.650 --> 13:35.440 a make it a bit more interesting basically. 13:35.650 --> 13:40.510 And I want you to combine that with something I want you to use vertex grouping to isolate where the 13:40.510 --> 13:46.420 building sits from the bumpy ground and that's going to prevent the inside of the building from getting 13:46.420 --> 13:47.770 bumpiness inside it. 13:47.770 --> 13:53.890 I'm not sure that's technically the right language to use but we don't want undulations underneath the 13:53.890 --> 13:59.490 building itself that needs to be nice and flat just like you would build a real building. 13:59.920 --> 14:02.790 So balsa video now and give that a go. 14:05.370 --> 14:06.650 Okay guys welcome back. 14:06.780 --> 14:11.080 Let's go make some ground more interesting and hop over into a blender. 14:11.900 --> 14:18.890 So I'm going to say goodbye to my fossil for the moment and go and open up my Gothic church that I've 14:18.890 --> 14:19.860 been working on. 14:19.970 --> 14:22.160 So go to the 3-d view and have a look. 14:22.160 --> 14:23.980 How's it coming along pretty well. 14:23.990 --> 14:28.970 I have decided by the way and I might do this on camera or off camera. 14:28.970 --> 14:36.230 I haven't decided yet but this top part at the top here I've actually looked at some reference material 14:36.260 --> 14:43.160 and most of them don't have such fancy tops of them on the actual bell tower itself so that I'll probably 14:43.160 --> 14:49.230 go but the rest of these lovely arch ways will actually remain. 14:49.370 --> 14:50.820 So let's work on this ground sir. 14:50.840 --> 14:57.320 I'm going to click on the ground and it doesn't have any thing and any geometry at the moment now. 14:57.380 --> 14:58.790 A couple of options. 14:58.790 --> 15:05.300 What I want to do first of all is just see if adding a subdivision surface modifier is going to shrink 15:05.300 --> 15:07.600 it too much to with a level of six. 15:07.760 --> 15:13.760 So let's go to the rendered mode and note that looks absolutely fine for the moment. 15:13.760 --> 15:18.120 I may have to adjust the scale of it slightly and bring it out. 15:18.140 --> 15:19.210 There we go. 15:19.460 --> 15:21.680 I'm just doing that by nothink reference. 15:21.710 --> 15:22.100 Really. 15:22.100 --> 15:24.350 So that is looking pretty good. 15:24.380 --> 15:27.050 Let's go and start modifying it. 15:27.050 --> 15:30.190 Let's add a displacement modifier as well. 15:31.380 --> 15:36.200 Hasso is lifted all the way off the ground that's not too great but we'll deal with that in a bit. 15:36.230 --> 15:37.060 Let's add a. 15:37.100 --> 15:38.810 Or is there a texture in memory I can use. 15:38.810 --> 15:42.800 I'm going to use the displacement we've already got linked in. 15:42.800 --> 15:44.330 Wow okay check that out. 15:44.330 --> 15:47.010 It's my church in a mountain range. 15:47.010 --> 15:52.100 I don't think we want the strength quite that high so let's lower it down to maybe point to kibbitz 15:52.190 --> 15:54.480 slightly more realistic. 15:54.710 --> 15:59.870 But what we're missing in here is as you can see it's modifying the ground and doing for church. 15:59.870 --> 16:03.600 Not only does that make it Bumpy inside of that's no good. 16:03.620 --> 16:05.870 Looks like a landslide or something has happened. 16:05.870 --> 16:09.050 But it also means that the church is floating in places as well. 16:09.050 --> 16:11.830 That's no good so we can do this in any order. 16:11.840 --> 16:15.710 But I've chosen to do it around this way simply so I can show you the impact. 16:15.710 --> 16:17.010 If you haven't done it. 16:17.300 --> 16:25.110 So let's go ahead now in order to use virtex Grouping we aren't going to have to apply this modifier. 16:25.190 --> 16:29.740 I don't believe we're going to be able to do any virtex selecting because the only real vertices of 16:29.740 --> 16:36.800 these four on the outside of this plane the i've got so we're going to have to apply that's come apply 16:36.800 --> 16:37.460 in edit mode. 16:37.460 --> 16:38.430 Fair enough. 16:38.480 --> 16:39.550 Apply that. 16:39.620 --> 16:44.690 So now I've got some actual geometry that I can work with a hoppin to edit mode and we can see all the 16:44.690 --> 16:50.820 little squares and I'm simply going to draw around them and remove them so I'm going to go to circles 16:50.820 --> 16:54.140 select and holding down my middle mouse button. 16:54.140 --> 16:57.100 Of course you could select any number of ways. 16:57.140 --> 17:02.680 I'm just going to remove some of the ground around my church or rather some of these verses now. 17:02.780 --> 17:06.370 I don't want it to close because this one gets pulled up. 17:06.500 --> 17:08.360 Remember that it will. 17:08.360 --> 17:14.200 And it is selective the moment remember where virtex Grouping this particular verse sees here. 17:14.300 --> 17:21.200 If that gets pulled up then it's gone to pull up anything connected to it to actually want to make sure 17:21.200 --> 17:23.860 that it's actually going to be quite wide around here. 17:23.860 --> 17:25.120 So this one gets balled up. 17:25.160 --> 17:30.950 It won't affect if this one gets pulled up it will affect So we want to remove those as well in order 17:30.950 --> 17:32.770 to make this work properly. 17:32.810 --> 17:35.290 And that should be okay would do that. 17:35.330 --> 17:38.160 I'm going to go over to my mesh data. 17:40.690 --> 17:45.880 I'm going to scroll down to virtex groups and add a vertical group and I'm going to call it bumb Paean 17:46.230 --> 17:47.070 ground. 17:47.080 --> 17:47.950 Why not. 17:47.950 --> 17:53.910 That is what it's applied to and I'm going to assign sort of an a d select everything and just select 17:53.990 --> 17:56.060 Yeah that's absolutely great. 17:56.060 --> 17:59.840 So now we've got that Verts group assigned we can go to our modifiers. 18:00.660 --> 18:03.420 Virtex group and Bumby ground and there we go. 18:03.420 --> 18:09.990 Now on we hop out of edit mode the actual ground itself around the church should be flat which it is. 18:09.990 --> 18:16.350 Now we can see at this point there is some sheer drops around it but that's okay because it means that 18:16.350 --> 18:22.920 the ground inside and that it's placed on is absolutely fine of course now we can go round and tweak 18:22.920 --> 18:29.250 a load of stuff so we make the church sit down or we can make the church sit up and we can see here 18:29.520 --> 18:36.270 a bit more clearly what the mid level does if it's set in the middle of them it's going to oscillate 18:36.300 --> 18:42.040 either side of this midpoints that's the area that's flat essentially at the moment. 18:42.150 --> 18:43.820 And obviously the strength. 18:44.920 --> 18:50.860 I think point two is a little high I am going to go for point one not just round that quickly and see 18:50.860 --> 18:52.060 what we've got. 18:52.120 --> 18:54.120 Well maybe points to. 18:55.590 --> 18:57.030 Yeah I quite like that. 18:57.290 --> 19:03.950 But I am obviously not going for that low poly look song I'm going to open up my tool shelf and all 19:04.010 --> 19:10.370 the operator panels go is self very large that small are going to turn on smooth shading that is looking 19:10.370 --> 19:11.060 pretty good. 19:11.060 --> 19:12.670 How did you guys get on. 19:12.680 --> 19:16.940 Did you try this technique on any of perhaps the block work in your building as well where you could 19:16.940 --> 19:21.900 start adding detail to individual areas and making it a bit more unique as well. 19:22.070 --> 19:27.500 Make sure you show your work in the discussions and I will see you guys in the next lecture.