What's new

Apple silicon initial support

• M-series macs with macOS Sonoma (macOS 14)
• MoonRay XPU mode using Metal with UMA
• Intel Open Image Denoise (OIDN) using Metal
• hdMoonray Hydra render plugin
• All command-line tools, including moonray and moonray_gui
• Arras for multi-machine rendering

Build Improvements

• Installing cgroups now optional
• Fewer compiler warnings
• Cleaned up redundant CMake files
• Misc build cleanup/improvements

Bug Fixes

• Fixed lib_rendering_pbr unit test resource issue
• Fixed pixel sample map could generate 0 samples
• Fixed mcrt_computation crash related to visibility aov
• Fixed reloading textures did not trigger a render update (hdMoonray)
• Fixed ImageMap missing file error if use_default_color_when_missing is true
• Fixed resume render regression
• Fixed improperly applied prim attr instance overrides
• Fixed crash/overflow in memory pool code
• Fixed uninitialized motion blur vars for primitives
• Fixed potential render prep hang and crash
• Fixed XPU handler depth bug
• Fixed several bugs with fallback to vector mode from XPU mode
• Fixed USDGeometry crashing in XPU mode when geometry is empty
• Fixed memory pool crash when XPU queue sizes are increased
• Fixed random sampling issue that was causing fireflies in vector mode
• Fixed implicit 64->32 bit truncations
• Fixed -size parameter in moonray_gui
• Fixed crash when both sets of velocity data and acceleration data are present
• Fixed mcrt_computation shutdown issue related to pthread-condition-wait
• Fixed moonray command -layer option

Features

• Improved adaptive light sampling
• rdla_filter tool improvements
• New usd_mipmap_images tool for handling USD scenes with non-mipped/non-tiled textures
• Added OIDN engine to hdMoonray denoiser
• New FisheyeCamera
• Added inside-out projection for SphericalCamera
• Misc performance improvements
• Added cryptomatte_output_p0 to RenderOutput
• Enabled multithreaded GPU access
• Improved CPU affinity control
• Automatically calculate max v dimension for UDIM textures
• Added "observer direction" map type to AttributeMap
• Improved memory stats for vector and XPU modes
• Added tessellation memory usage stats
• Added light sampling stats

Other

• Added status messages for Houdini Solaris (hdMoonray)
• Change default texture coordinate name to 'st'
• Replaced deprecated tbb::atomic with std::atomic
• Create sub directories for RDL2 file path if they don't exist (hdMoonray)
• Improved SceneClass attribute documentation
• Arras and Rndr (debug mode) support now in two separate plugins (hdMoonray)
• Plugin settings cleanup (hdMoonray)
• Removed multi-layer deep image output support
• Vector math lib macro/function cleanup
• Remove unnecessary MemPool templating
• Removed Centos 7 build instructions
• Added macOS build instructions

Community Contributors

• Alexander Fuller
• Yoshiaki Senda