6.1 Lighting and Post Processing - Unreal Photo Realistic Archviz Tutorial
Project files and powerpoint slides can be downloaded at: https://gum.co/lTAyu
Final UE4 scene can be downloaded at $15 at our gumroad page: https://gum.co/yVtgo
00:09 - Different type of light and when to use them
Skylight
Directional Light
Spot Light
Point light - using this to create cove lights.
03:27 - The Skylight setup for our scene
Before continuing, i find the brick material a bit too reflective, so i invert the roughness map to get the more 'dry' look
For the sky materials, sometimes i use lightmass replace node if i want to use a cleaner white color to build the light, but yet maintain the HDRI map for my background.
For this scene, i use a simple static skylight, and use the captured scene option for my skylight as i want to have a more yellowish tint to the HDR map for light building.
00:00- Lightmap resolution before light building
Discussing about lightmap resolution, we imported the meshes with minimum Lightmap resolution of 16 and maximum of 64. This is not enough for some but yet too much for others.
For the sofa it is made up of a lot of meshes, most of which are very small buttons. Unreal assign a lightmap resolution of 32 for them, which i feel is beyond what we need, so i manually switch them to 8 to increase the light building speed - You will be amazed how a simple setting like that can save sometimes hours of light building.
For the other meshes, we turn on the lightmap density
Blue - Not enough lightmap resolution
Red - Too high lightmap resolution (But don't be afraid to use it for Archviz as we are going for maximum quality)
Green - Just nice
For some items, we cannot get them out of the blue zone, especially those very organic looking stuff like blankets. Set a maximum of 512 for these meshes.
Play around with the lightmap resolution until everything is green. For the walls and floors and carpets, set them to 1024. This will make it red, but its ok.
For the rest we try to set them into the green zone.
14:31 - Initial preview build to catch any last minute mistakes.
Before we do a final light build, if you have the time you can do a preview build. If there are any glaring mistakes, this can be picked up before committing a long production light build only to find you need to change something.
I change the number of skylight bounce to 3
Change the Environment colour to white
Change the environment intensity to 6
After doing the initial preview build (Less than 2-3 minutes) in my system, things are looking good and i don't see any other things that i want to change. I now will setup my system to a final build.
17:12 - Render Settings and lightmass settings
Render settings for maximum res reflections.
Lightmass settings.
Static lighting level
Num indirect lighting bounce
num skylight bounce
Indirect lighting quality
Indirect lighting smoothness.
Environment colout and intensity.
Compress lightmaps.
20:47 - Saturation and contrast
We go through some of the common settings that we use in post processing such as bloom, contrast, saturation etc
23:39 - Using cinematic viewport and increase screen percentage to take high res screenshot.
25:38 - Support the channel:
Some of the project files and power point slides can be downloaded in our gumroad page.
The final UE4 project files can be purchased for $15.
Refer to youtube description for locations of where to download them.
26:56 - Contact us:
We have an online presence in youtube and facebook.
You can contact us directly if you have any questions via our email.
But the best way to get us is through our facebook page through the messenger.
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