CSE3541/5541 (Spring 2022) Lab #4

Guidelines

    The grader will NOT overcome compiler or debugging errors for you.    All make-ups for lab must be accompanied by a documented and

verifiable excuse well before the deadline. Given the severity of the emergency please inform me as soon as possible.

    Lab submissions will NOT be accepted via email to me or the grader.    Work on the lab on your own. No group work!

Objectives

Practice with various lighting models, light types, illumination parameters, materials and rendering pathways. Become familiar with how 3D tools, like Unity, use these.

Tasks

1.   Your first task is to go through the following videos (39 minutes) in this playlist:

https://www.youtube.com/playlist?list=PL-dl03Z0eHn-

rqqkHnJPk1Io1PISCUNmB

You will construct a scene following the 2nd and 3rd video, while also adding  some real-time lighting. Study those videos carefully and repeat them. Some of these steps and additional ones are below.

Additionally, read through the following Unity manual pages:

   Static Game Objects

https://docs.unity3d.com/2021.1/Documentation/Manual/StaticObjects.html

   Shaders/Built-in shaders/Standard Shader

https://docs.unity3d.com/2021.1/Documentation/Manual/shader- StandardShader.html

   Materials/Material Inspector reference

https://docs.unity3d.com/2021.1/Documentation/Manual/class-Material.html     Materials/Using materials with C# scripts

2.   Create a new URP 3D project in Unity2019.3 or higher. Create the folder structure as discussed for Lab1 (Scenes, Materials, Scripts, ...)

3.   Create an interior scene similar to that shown below. This one is 6 planes for the  floor, ceiling and 4 walls, and 3 cubes for the interior cutout. I used a wall            thickness of 0.3 meters and the overall room size is 20x20 meters. Feel free to     model your apartment or some closed arena, we just want some dark areas and     some light areas. Place all of these in an Empty GameObject named Room (make sure to reset its transform before moving objects into it).

4.   For the Camera, set the clear flag to Color and set the color to black. In the Lighting/Environment, Disable the Skybox, set the Realtime Shadow and  Ambient Colors to black.

5.   Create at least 5 PBR materials and add one to all surfaces, giving the floor,      ceiling, back and front, left and right, and inner-walls different materials. The   Unity Asset store has several free PBR materials. Look for ones that are bright  and Updated Recently (sorting option).  Cite what you use in your report. Some

possibilities (Note: You may need to convert the materials to URP):

a.  9t5 PBR Textures Freebies

https://assetstore.unity.com/packages/2d/textures-materials/9t5-pbr-

textures-freebies- 171062

b.  Gridbox Prototype Materials

https://assetstore.unity.com/packages/2d/textures-materials/gridbox- prototype-materials- 129127

6.   Add dynamic lights with Mode set to mixed:

11. Add Light Probes. You can manually place these or better, write an editor script to create them. The illustration below went overboard and has a volume of 835  light probes procedurally.

12. Bake your lighting.

13. (2 points extra credit) Add a transparent sprite (A translucent texture set to Fade) to your scene.

Expected Results

Here is the baked lightmap for the right wall: