AGD 钻石着色器
Advance Glass Diffraction Node
This render was a collaboration of node study with Blender conference 2019, keynote by Vilem Duha. Advance glass material by Zhanlong Deng, and support from Romuald6 Blend Swap.
The Advance Glass Dispersion node group is designed for jewellery rendering. The default blender glass shader lag of glass light ray physics sim. For now, the better way to simulate the diffraction effect that is commonly found in jewellery was to manually separate the three light ray channels (RGB).
This node takes colour information from the input added the intensity value which affects the amount of light ray that reflects back to the camera.
The Blender provided Principled BSDF render is more than adequate for most scenes. However, for certain closeup scenes, the lag of light physics can cause some strange artefacts.
*Image preview with Glass passed of 24*
The node is not physics-based, it is not physically correct. Thus, mighty not worked well with PBR shader or materials. But for the purpose of rendering this scene, with the minor light condition and neutral background. The output worked as intended.
The node group added the light ray interaction and shaped with different dispersion input value thus creates the dispersion. The value is not strictly limited to a certain number it really depends on the scenes.
Feel free to download the blend file and test it out.
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