Contents
The first phase of XPU delivers a complete feature set for look development. However, some features are not supported yet but will be as XPU matures to replace RIS. Here is a high-level summary of those features supported currently in XPU
Shading
| BxDFs, Displacement & Patterns | RIS | XPU | Notes |
|---|---|---|---|
| PxrSurface |
|
| (some subsurface modes are not available) |
| PxrLayerSurface |  | | |
| PxrDisneyBsdf | | | |
| PxrMarschnerHair | | | |
| PxrConstant | | | |
| Lama | |  | |
| Volumes | | | |
| OSL Patterns | |
| (PxrDirt and PxrCurvature are not supported) |
| C++ Patterns | | | |
| Baking | | | |
| Point Clouds | | |
Geometry
| RIS | XPU | Notes | |
|---|---|---|---|
Subdivision Surfaces |
|
| (Catmull-Clark only) |
Polygonal Surfaces | | | |
NURBS | |
| |
Curves | | | |
Points | | | (Some features are not available) |
Quadrics and Blobbies | | | |
Nested Instancing | |
|
Lighting
| RIS | XPU | Notes | |
|---|---|---|---|
Analytic Lights |
|
| ( PxrEnvDaylight, PxrCylinderLight not available; some light parameters are not available ) |
Mesh Lights | |
| |
Light Filters | |
| |
Light Linking | |
| |
Scalability to many lights | | | (Some features are not available) |
Integration & Ray Tracing
| RIS | XPU | Notes | |
|---|---|---|---|
PxrPathTracer |
|
| (some features are not available ) |
PxrUnified | |
| |
PxrVisualizer | |
| (some features are not available ) |
Trace Sets | |
|
Post Processing
| RIS | XPU | Notes | |
|---|---|---|---|
Sample and Display Filters |
|
|
Pipeline
| RIS | XPU | Notes | |
|---|---|---|---|
AOVs and LPEs |
|
| |
EXR, TIFF | |
| |
Deep Output | |
| |
Holdouts | |
|