Demystifying Blender's Specular Channel! How Specular relates to the Roughness channel.
Автор: Christopher 3D
Загружено: 2023-04-22
Просмотров: 4766
Описание:
I answer a viewer question about the nature of the Specular channel in this video regarding how the roughness channel affects the specular channel. I cover the inter-relationship between the Specular Channel, the Fresnel effect, and the GGX option in the Principled BSDF.
A follow up to this video is here: • Specularity and Roughness, Part 2. Dealing...
No AI was harmed in the making of this tutorial. 100% human made.
00:00 Intro
00:18 Description of Specularity
01:45 The Fresnel Curve
02:00 Incidence
03:05 F0 and F90
04:00 Index of Refraction
04:08 Specular Channel
04:50 Roughness
05:21 GGX Microfacet Algorithm
06:06 Diffuse & Fresnel
07:15 Example 1, a red sphere
09:30 Example 2, a black cube
12:25 Variable Roughness with Incidence
14:18 Metallic Surfaces & Fresnel
16:30 Fresnel Node
#ggx #blendertutorial #fresnel #roughness #blender3d #materials #architecture
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