WEBVTT 00:00.390 --> 00:05.940 So to pick back up where we left off, basically, I accidentally made an over off offset mash node 00:05.940 --> 00:11.670 in between the lessons and it offset the grass way down. 00:11.670 --> 00:15.060 So I just deleted that offset note and it was back where it should be. 00:15.480 --> 00:20.910 So in this lesson, I want to cover the render setup in Maya or what used to be called render layers. 00:21.240 --> 00:27.480 And if you're familiar with render layers, you can get to the old system by going to the preferences 00:27.480 --> 00:31.140 and rendering and say preferred render setup and say legacy render layers. 00:31.140 --> 00:34.380 You will have to restart Maya, but you can get to the old system that way. 00:34.660 --> 00:39.420 But we're going to use the new way called render setup and set a little it's a little convoluted. 00:39.920 --> 00:45.180 It could hopefully they fix it and later versions. 00:45.180 --> 00:46.110 But basically it's up here. 00:46.350 --> 00:48.990 There's a little button and now we have a render setup. 00:49.170 --> 00:54.870 And essentially what we need to do is select everything that we want and add it to this collection or 00:54.870 --> 00:55.630 this render layer. 00:56.010 --> 01:02.490 So in this example, what we're going to do is try to separate the Firefly's from everything else. 01:02.910 --> 01:07.380 So that means that when a firefly goes behind the tree, it should disappear. 01:07.380 --> 01:08.610 But we don't want to see the tree. 01:09.030 --> 01:09.480 All right. 01:09.490 --> 01:15.360 So when we're compositing, we can just bring in the Firefly's on their own so that we can have finer 01:15.360 --> 01:19.290 control over how we kind of composite the fireflies. 01:19.290 --> 01:25.020 If we want to add Glos and whatever we can, we can isolate the fireflies and only glow those and not 01:25.020 --> 01:25.760 the rest of the scene. 01:26.100 --> 01:32.130 So what we need to do is go in here and grab every piece of geometry that's in the scene that we want 01:32.130 --> 01:35.360 to include and then middle mouse drag it into a collection. 01:35.730 --> 01:41.550 So let's go through here and select everything from the outliner that we want to include, which is 01:41.550 --> 01:44.520 basically all of that. 01:45.180 --> 01:49.290 And then we can right click here and say create new collection or create collection. 01:50.190 --> 01:56.580 And we'll just call this scene and then we can middle mouse drag from the outliner into it. 01:56.580 --> 02:05.130 Says Agit collection include a middle mouse track that in now, if we had named everything with a suffix 02:05.130 --> 02:07.470 or prefix, we could have 02:10.230 --> 02:15.270 we could have just type that in here as an expression and it would include everything with that suffix 02:15.270 --> 02:15.870 or prefix. 02:16.320 --> 02:16.740 But we didn't. 02:16.750 --> 02:18.290 So we just need a middle mouse, drag it in here. 02:18.840 --> 02:26.640 So what we need to do next is to add a shader override and in that shader override we can add the holdout. 02:26.910 --> 02:31.770 Now, hold out just basically means and we're going to use a surface shader for that hold up basically 02:31.770 --> 02:36.180 means that you can't see it and there's an alpha there. 02:36.180 --> 02:37.170 So it's totally transparent. 02:37.170 --> 02:39.900 So we need to turn out that opacity all the way to black. 02:40.500 --> 02:45.510 And for us to test this in the render, we basically need to turn off rendering the whole scene, which 02:45.510 --> 02:46.880 is this little tab here. 02:46.920 --> 02:53.070 So when you turn that off and we have this one on, so we go to Arnold, render prevue, it should render 02:53.220 --> 02:55.980 that layer basically by itself. 02:56.160 --> 03:00.030 And what we should see is a totally black. 03:00.810 --> 03:09.720 We shouldn't actually see anything because the holdout, you know, should be completely transparent. 03:11.760 --> 03:13.140 So that is not what we see. 03:16.460 --> 03:22.650 We turn that off, so let's turn off the visibility of this, let's turn on the visibility of that and 03:22.650 --> 03:23.910 now it should work. 03:24.300 --> 03:25.650 So let's go to Arnold. 03:26.130 --> 03:30.600 Let's go and let's make sure that we have all the shards here are there. 03:30.960 --> 03:34.890 So now when we go to Arnold Reinterview, we just needed to have that. 03:35.760 --> 03:37.220 I turned on. 03:37.680 --> 03:42.150 So now it should be totally black and it should take two seconds to render, which it does. 03:42.510 --> 03:43.680 And we test the alpha. 03:43.680 --> 03:45.350 We can see it's totally blank. 03:46.410 --> 03:46.910 Cool. 03:46.920 --> 03:48.340 So we have the holdouts. 03:48.360 --> 03:49.600 That's a huge step. 03:49.950 --> 03:55.980 So now we need to do is add the Firefly's someone to turn back on the visibility of the whole scene. 03:56.670 --> 04:01.590 So the whole scene should pop back on and now we can just select the Firefly's. 04:03.870 --> 04:09.060 Or we could just find them in the outliner, select one of the Firefly's, so that should bring up the 04:09.060 --> 04:12.600 Olympic cache, mean hit F in the outliner to find it. 04:13.170 --> 04:15.810 And then now I'm going to make a new collection here. 04:16.350 --> 04:19.200 So I'm going to say create collection. 04:19.590 --> 04:21.030 I'm going to call this Firefly's. 04:23.710 --> 04:23.990 Cool. 04:24.460 --> 04:33.760 So now all I need to do is just include that in here and that's it, we just need to view this. 04:33.760 --> 04:40.780 And now what we should get is all of the fireflies, and they should all be kind of correctly occluded 04:40.780 --> 04:42.250 by anything that's in front of them. 04:42.840 --> 04:43.690 That makes sense. 04:43.820 --> 04:45.920 OK, so let's test that. 04:46.270 --> 04:51.790 So what we should get is a totally transparent background and analysis. 04:51.790 --> 04:55.200 So we check the Alpha should look pretty much the exact same, which it does. 04:55.660 --> 04:56.590 So it's pretty amazing. 04:58.390 --> 05:04.630 We have created this interview here and let me just check it in the render cam. 05:05.200 --> 05:12.040 So all we need to do is to add the render cam by middle mouse it like we did the Olympic cache, and 05:12.040 --> 05:21.520 then we can go back into the Arnold Render preview and you may need to hit refresh for it to update 05:21.730 --> 05:27.760 for us to be able to select the render cam so we can switch between these two now and we can render 05:27.760 --> 05:31.300 this with the holdout and everything looks correct. 05:31.780 --> 05:32.080 Right. 05:32.080 --> 05:40.900 If we look at this compared to this view, we can see that we shouldn't have any Firefly's in this kind 05:40.900 --> 05:41.680 of quadrant. 05:41.710 --> 05:45.870 Right, because this tree is blocking them and we can see here that's the case. 05:46.240 --> 05:52.900 So it looks like everything's working properly and now we can render this as just the Firefly's. 05:53.270 --> 05:59.470 So let's go over to the rendering tab here and let's go to first. 05:59.470 --> 06:02.230 Let's make sure the render setup, the settings are correct. 06:02.770 --> 06:04.960 So it doesn't really matter. 06:05.170 --> 06:08.560 These don't really matter because the fireflies are surface raiders anyways. 06:08.950 --> 06:12.670 But we might want to turn on motion blur. 06:13.540 --> 06:21.280 So let's just enable that and let's go and call this Firefly's and. 06:24.240 --> 06:35.970 Now we can say name no extension, and we want to do the one thousand one to twelve hundred and frame, 06:36.340 --> 06:43.470 we want to make sure we have the render cam selected and the correct kind of settings here, depending 06:43.470 --> 06:44.850 on how you want to render this out. 06:45.150 --> 06:49.230 I say 720 and now are ready to export. 06:49.920 --> 06:57.510 Now, you could do x r it doesn't really matter, but we just want to make sure that we have some file 06:57.510 --> 06:59.400 format that has transparency. 06:59.940 --> 07:07.770 So now when we render and we go to render render sequence, it will start to render each one of these 07:07.770 --> 07:08.360 frames. 07:08.370 --> 07:13.860 So I'll see in a second and we will pick back up, finishing out, rendering the actual scene the rest 07:13.860 --> 07:15.330 of the scene besides the Firefly's. 07:15.550 --> 07:21.180 Let me just hold on here for one second, because it looks like it's rendering the perspective cam. 07:21.600 --> 07:29.370 And even though that we told it to render the render cam, let me just minimize this real quick and 07:29.370 --> 07:32.760 show you that says camera perspective shape. 07:32.760 --> 07:33.180 Right. 07:34.830 --> 07:41.640 We're correctly rendering the whole DAULAIRE But, you know, my just decides to not respect what we 07:41.640 --> 07:46.380 said here in the render settings where we said render cam, render the render cam. 07:46.740 --> 07:47.760 It's not doing that. 07:47.790 --> 07:54.000 So we can delete that or close it out and go to render sequence again and hit this little option box. 07:54.480 --> 07:59.880 So for some reason it's choosing to override what we already chose with the perspective shape. 08:00.480 --> 08:04.710 So let's select render cam here and do that again.