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Texture atlas format files can be read in either UDIM (Mari) format or Mudbox format. This plugin also supports Rtx procedural texture plugins.

Input Parameters

Scale

An object-space scale applied to the bump.

Disabled

Turn off the bump effect, useful for debugging. Uses the geometric normal instead.

Input Bump

If Input Bump is connected (and Filename is not specified), the pattern executes the upstream shader graph connected to Input Bump three times, once at the shading point and once at P+du and P+dv. Then it crosses the results to get the bump normal.

Note that if you have a fixed texture and UV, it is highly recommended to use the Filename parameter below because it is 3 times faster!

If Filename is specified below, Input Bump is ignored.

Filename

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The PxrBump pattern currently does not allow modifying the manifold of the texture, use the below control.

First Channel Offset

First channel offset to be looked up for Filename.

Atlas Style

Specifies the style of texture atlas that is being used. If you specify an atlas style, the Filename parameter must contain a _MAPID_, which will be substituted automatically according to the surface parameterization and the style of atlas. Valid styles are:

• 0: None
• 1: MARI
• 2: Mudbox

Invert T

Inverts the t texture coordinate for texture lookup.

Blur

Specifies how much to blur the result from the texture.

Mip Interpolate

Selects whether to interpolate between adjacent resolutions in the multi-resolution texture, resulting in smoother transitions between levels.

Scale

An object-space scale applied to the bump.

Bump Manifold

This takes an incoming connection of the PxrBumpManifold2D

Advanced

Input Normal

An additional normal to be added to the bump normal.

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The amount to mix the resulting normals with the original surface normals. Toward 1.0 will mix in more surface normals. You can find an example here.

Disabled

Use the geometric normal (ignore the modified bump).

MipBias

Bias mip selection chosen for rendering to either a higher (negative integers) or lower resolution (positive integers) selection.

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MaxResolution

Clamp mip selection to a preferred maximum level. This may prevent the highest resolutions from being rendered depending on your selection.

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