PBR and Arnold Shaders - week 7

PBR

What is PBR? 

PBR stands for Physically based rendering, PBR represents the interaction of light and materials in a more scientifically accurate way. 

Comparison between Maya and PBR Shaders 


PBR materials use multiple layers or channels to mimic real-world materials.

Different softwares support different workflows like maya, unreal engine, blender support metalness while marmoset and substance support both metal and specular.

Practice

Assigning materials in maya 

Select a polygon primitive sphere in maya and we are going to attach a material to it. You can go to channel box and rename the sphere too.
By clicking right and scroll to bottom to assign new material, the dialogue box will be opened where you can choose a new material 
choose the blinn material as you can see a ray of shine in a sphere, pick the color you want and apply it.

Windows>rendering editors>hypershade

Select phong and give it a new shade
you can assign different materials to polygons by just just selecting the material and assign new material from hypershade so it does not cost you alot of time.

Assigning materials in Arnold 

whenever you create a material lamberth1 is assign to that material/polygon by default

change the color and apply the checker material
it be applied by default to other primitives as well 
if you want to add a material to ¥our favourite list so you can apply at one click you can assign that as well


Project 2

Opened the asset which broken into 3 different meshes

assign the materials to the meshes which is aistandardsurface and open the lights by going to arnold>lights>sky dome lights (it's good for creating a variation of color temperature in the scene), go to color and open the HDR image which is already provided.
Go to the render settings>open the arnold renderer> settings> change the render from CPU to GPU so it'll render fast , go to arnold renderer tab, increase the camera settings to 5 , then images>add image>Denoiser images and it'll clear any noise we may get, open the render view and render the selected scene, we can change the renderer settings for having a high quality render too.



Self - Critique 

The concepts seems hard to get into at first try but the practical was pretty easy after the work done.

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