Old renderer
Custom GLSL shaders aren’t supported for Vulkan. Instead, use MaterialX.
Mantra materials
Using materials ¶
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How to assign assign materials and use the library of built-in materials.
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Lets you assign materials to objects and primitives interactively.
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Overriding material parameters and properties
How to change material parameters on individual objects or pieces of geometry.
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How to customize how materials appear in the Vulkan viewport.
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You can pre-compile a material as a digital asset to speed up shader compilation at render time.
Textures and UVs ¶
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How to use textures to change the look of materials.
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How to use utility VOPs to modify textures in your materials.
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Generates a texture map from one or more objects' rendered appearance.
Creating materials ¶
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The basics of how to create, combine, and modify materials in Houdini.
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How to mix and layer two or more materials together to create a combined material.
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How to build a parameter/input interface for your custom material.
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Tips for working with shaders in the VOP network.
Guru level ¶
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How to export extra information from the shader and save it as part of the rendered image.
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Absorption and nested dielectrics
Automatically scoop out geometry with one shader from inside overlapping geometry with another shader, allowing different shading properties inside.
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Material stylesheets are a highly technical solution for assigning materials and overriding material parameters on packed geometry.
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Loops and conditionals in VOPs
How to create looping and conditional blocks of nodes in VOP networks.