Add OptiX sphere primitive bindings#8
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…e vectors - Add IF_OPTIX91 version macro for conditional compilation - Expose allowClusteredGeometry in PipelineCompileOptions - Add cluster accel device properties (COOP_VEC, CLUSTER_ACCEL, etc.) - Bind new primitive types and flags for ROCAPS curves - Add ClusterAccel build enums, structs, and host functions (clusterAccelComputeMemoryUsage, clusterAccelBuild) - Add CoopVec enums, matrix layout, and description structs
- Add modern pyproject.toml with package metadata for PyPI distribution - Package name: pyoptix-contrib (to avoid conflicts with any future NVIDIA package) - Remove duplicated metadata from setup.py (now sourced from pyproject.toml)
- Add MANIFEST.in to include main.cpp, CMakeLists.txt, and CMake modules in sdist - Remove license classifier conflicting with PEP 639 license expression - Add explicit setuptools package discovery to avoid flat-layout error
- Add README.md with installation, usage, and feature overview - Reference README from pyproject.toml for PyPI rendering
- Build wheels for Python 3.9-3.13 on Linux x86_64 via cibuildwheel - Build sdist for source distribution - Auto-publish to PyPI on version tags using trusted publishing - OptiX SDK headers provided via OPTIX_HEADERS_B64 repository secret
- Upgrade cibuildwheel v2.22 to v3.1 for Python 3.14 support - Install CUDA toolkit inside manylinux container instead of host - Add OptiX SDK headers to repo, removing secret dependency - Exclude libcuda.so.1 from auditwheel repair (driver-provided) - Build wheels for Python 3.9-3.14
Adds Python bindings for OptiX sphere primitives, enabling hardware- accelerated ray-sphere intersection for point cloud rendering: - BuildInputSphereArray struct and Python class binding - BUILD_INPUT_TYPE_SPHERES enum value - PRIMITIVE_TYPE_SPHERE and PRIMITIVE_TYPE_FLAGS_SPHERE enums - Sphere case in convertBuildInputs() for GAS construction - Gated behind OPTIX_VERSION >= 70600
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Summary
OptixBuildInputSphereArray, enabling hardware-accelerated ray-sphere intersectionBuildInputSphereArrayclass with full property access (vertex buffers, radius buffers, flags, SBT records)PRIMITIVE_TYPE_SPHEREandPRIMITIVE_TYPE_FLAGS_SPHEREenum values for pipeline configurationBUILD_INPUT_TYPE_SPHERESfor GAS build input type selectionconvertBuildInputs()for automatic GAS constructionOPTIX_VERSION >= 70600Motivation
Sphere primitives provide efficient point cloud rendering — each point becomes a hardware-intersected sphere, avoiding the need to tessellate splats into triangles. This is used by rtxpy for lidar point cloud visualization (see makepath/rtxpy#58).
Test plan
optixGetPrimitiveIndex()place_pointcloud()pipeline