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• Included Intel Open Image Denoiser: HDR/LDR, supporting RGB/Albedo/Normal inputs.
• Switched to optional counting of transmission path segments (previously they were counted always and included in the segment range limits).
• Const-size geometry primitives (same radii, or u/v/w vectors for all data points) with much lower memory consumption, beneficial e.g. for volume plots.
• Volume coloring material for semi-transparent volume visualization (experimental).

Work distribution has moved to a camera property. It is now possible to setup cameras with different modes and switch easyli. Work distribution is now based on relative or absolute noise values. See this example.

Noise-balanced sampling is quite a nice feature. It took some more time to encode it, so the release is out not waiting for more features. Sample code is in this notebook.

NVIDIA driver r530 or above required

Code was moved to the new OptiX SDK and progresively new features should be covered. Also GPU-GPU transfers are evolving, now including CuPy arrays. In this release we have:

• CuPy support for texture and geometry data updates
• new curve geometries: Ribbon, Beziers
• no dedicated PyTorch/CuPy/... methods, all types handled with single corresponding method (it is a breaking change, that require minor code updates)

and more news is coming, check Patreon ;)

This release introduces fast and simplified ways to copy data straight to device:

• set texture data from pytorch tensors

• texture filter modes enabled, default is trilinear, optionally nearest

• set geometry data directly from numpy array or pytorch tensor (no host copy is made on the way)

• synchronization method to update host copy with data from gpu: NpOptiX.sync_raw_data()

• convenience method to get a copy of geometry data (more simple than PinnedBuffer, though returns a copy): NpOptiX.get_data()

• OpenCV-like intrinsic matrix in camera setup, but note: distortion coefficients not supported still
• configurable denoiser start frame
• ovrlaping refractive volumes handling

NOTE: NVIDIA driver r520 or above is required for this release.

Updates are:

• AI upsampler and HDR denoiser
• Catmull-Rom curve primitive
• binaries updated to OptiX 7.6
• raytracing and callbacks workflow explained in the docs

Code is updated to work with recently released pythonnet 3.0, which enables using Python 3.10 and more recent linux distros. There are also a few internal packages updated.

• packages updated to VS 2022, DllExport changed to the one by 3F
• code updated to support pythonnet 3.0, thus compatible with all pythons up to 3.10

• updated to use OptiX 7.5 (performance improvements are in, new features in the next release)
• PTX replaced with IR format, generated with CUDA 11.7
• several multi-gpu improvements and fixes

Fix bug causing errors when geometry types where changing after ray tracing started.