RTX / NVIDIA IndeX Compositing

This extension integrates NVIDIA IndeX with the RTX renderer (Real-Time and Interactive/Path-Tracing) by performing image-based compositing for Volume, Points and other prims that are rendered by IndeX.

After loading this extensions, go to “Render Settings / Common” and enable “NVIDIA IndeX Compositing” (no restart necessary).

Then select a Points or Volume prim, go to its “IndeX” section in the “Property” window and enable “Use IndeX compositing”. The prim will then be loaded and rendered by IndeX.

Configuration

Available settings in “Render Settings / Common / NVIDIA IndeX Compositing”:

• Depth Compositing: Controls depth-correct compositing.

• Color Scaling: Scale factor that will be applied to the color values of the IndeX rendering output (brightness).

• sRGB Conversion: Applies color space conversion to the IndeX rendering output. This can be used to adapt to the selected Tone Mapping operator.

• Opacity Scaling: Scales the opacity of the entire IndeX rendering.

• Resolution Scaling: Reduces the IndeX rendering resolution (in percent relative to the viewport resolution).

• Rendering Samples: Number of samples per pixel used during rendering by IndeX (supersampling).

• Default Point Width: Default point width for new point clouds loaded from USD. If set to 0, a simple heuristic will be used instead.

Full documentation: https://docs.omniverse.nvidia.com/materials-and-rendering/latest/rtx_scientific_index.html