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v3.7.1

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@njroussel njroussel released this 17 Sep 20:43
· 50 commits to master since this release
v3.7.1
02459c4

  • Upgrade Dr.Jit to version 1.2.0. This release brings several important improvements and several bug fixes:

    • Event API for fine-grained GPU kernel timing and synchronization, enabling better performance profiling.
    • Enhanced CUDA-OpenGL interoperability with simplified APIs for efficient data sharing between CUDA and OpenGL.
    • Register spilling to shared memory on CUDA backend, improving performance for complex kernels with high register pressure.
    • Memory view support for zero-copy data access from Python.

    The remainder lists Mitsuba-specific additions.

  • Improvements:

    • Improved bump and normal mapping with two important fixes for more robust and artifact-free rendering. Both the bumpmap and normalmap BSDFs now include: (1) Invalid normal flipping - ensures perturbed normals are always consistent with the geometric normal by flipping shading normals when needed, following the approach in Schüssler et al. 2017. (2) Microfacet-based shadowing - smooths shadow terminator artifacts using the shadowing function from Estevez et al. 2019. Both features are enabled by default but can be disabled via the flip_invalid_normals and use_shadowing_function parameters for backwards compatibility. (commit e32d71807, contributed by Delio Vicini).
    • Improved sunsky documentation. (PR #1743, contributed by Mattéo Santini).
    • Added support for vcalls of Texture. (commit 6b1603c77).
    • Added Python bindings for field<T> types. (PR #1736, contributed by Delio Vicini).
    • Allow multiple Python objects to refer to the same Object*. (PR #1740).

  • Bug fixes:

    • Fixed bug with unintentional reordering of channels when serializing and deserializing a Bitmap with more than 10 channels. (commit e84b18f, contributed by Sebastian Winberg).
    • Fixed hide_emitters behavior for area emitters in path integrator and all other integrators. (commits 3c3bf14c, 0755134e0, c967a0a24).
    • Fixed KDTree reference counting and shutdown procedure. (commit 14c8c9763).
    • Fixed compilation issues of the KDTree. (commit 65b38126b).
    • Prevent NaN values for normals of triangles with zero area. (PR #1733, contributed by Delio Vicini).
    • Prevent users updating the UniformSpectrum with a float of size different than 1. (PR #1722, contributed by Mattéo Santini).
    • Added Image manipulation tutorial back in the "How-to Guides". (commit 465609174, contributed by Baptiste Nicolet).
    • Add support for JIT-freeting to the sunsky classes. (commit f07f26c5e).
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