Standard Library - Fresnel VOPs - IPOPs (Image Plane Operators) for Houdini Karma CPU & XPU - MaterialX & Karma Materials.

What are IPOPs for Houdini?

IPOPs are operator workflows designed to streamline shaders and AOV development in Houdini. With our toolset, artists can easily standardise their networks and access specially developed nodes for various renderers and presets, increasing efficiency and creativity.

The Standard Library

The Standard Library is a set of HDAs that help artists create quick shaders and AOVs and contain useful Utility Nodes such as Fresnel for Karma (CPU & XPU), Mask Falloffs in Shaders etc. The HDA library is constantly updated with new nodes to assist artists in speeding up their workflow and creating a streamlined system thereby increasing efficiency and creativity.

Supported Renderer in Houdini:

1. VEX Shaders - Mantra

2. VEX Shaders - Karma CPU

3. Karma Material - Karma CPU & XPU

4. Karma MaterialX - Karma CPU & XPU

The Standard Library - Fresnel VOPs for MaterialX & Karma Materials

Karma Utility Shader	Standard Library	IPOPs Kma X Ray Shader	XRay visualization based on surface normals and incident rays.
Material X Utility Shader	Standard Library	IPOPs Mtlx Camera Facing	Generate a smooth roll-off between surface normal and the camera ray.
Material X Utility Shader	Standard Library	IPOPs Mtlx XRay	XRay visualization based on surface normals and incident rays.
Material X Utility Shader	Standard Library	IPOPs Mtlx IOR Materials	Library of Index of Refraction Values for Materials
Material X Utility Shader	Standard Library	IPOPs Mtlx Reflection and Transmission Light	Calculates the reflection and transmission coefficients (kr and kt) based on the index of refraction (ior) of a material, creating the Fresnel reflection and transmission effects.
Material X Utility Shader	Standard Library	IPOPs Mtlx Reflection Vector	Calculate reflection vectors based on incident rays and surface normals.
Material X Utility Shader	Standard Library	IPOPs Mtlx Transmission Vector	Compute transmission vectors using incident rays, surface normals, and the index of refraction values.
Material X Utility Shader	Standard Library	IPOPs Mtlx Front Face	Returns the front facing normal of a surface, given a surface normal (N) and an incident ray (I).
Material X Utility Shader	Standard Library	IPOPs Mtlx Fresnel	Computes the Fresnel reflection/refraction contributions given a normalized incident ray, a normalized surface normal, and an index of refraction.
Material X Utility Shader	Standard Library	IPOPs Mtlx Thin Film Fresnel	Computes the thin film reflection and refraction contributions given a normalized incident ray, a normalized surface normal, and an index of refraction.

The Standard Library contains over 30+ HDAs and will be available on Gumroad soon!

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FAQ:

1. What versions of Houdini do you support?Houdini 20.0625 and up (python 3.9 & 3.10.10).

2. Can I request for special features?Yes! If you require any support or require the setup to be customized to your needs or implemented in your scene, please contact us at support@chakshuvfx.com and we can debug/modify it accordingly.