HtoA 6.1.1.0 is a feature release using Arnold 7.1.1.0.
Please download the .py3 version of the HtoA installer when installing the Python 3 versions of Houdini.
Installation
Download Arnold for Houdini
Follow these installation instructions
System Requirements
Houdini, Houdini FX, Houdini Indie and Houdini Education
18.0.597
18.5.759
19.0.561
19.0.589
The cache will also need to be re-populated after installing a new Arnold version, updating to a new NVIDIA driver, or changing the hardware configuration of GPUs on the system. More information can be found here.The driver type must be set to DCH.
In the driver page select "Windows Driver Type:" DCH
Enhancements
- Adding exr compression options for separate AOVs - (HTOA-1701)
- Default to render purpose in Solaris - (HTOA-1929)
- Add receive_shadows, self_shadows to the render geometry settings LOP (HTOA-1934)
- Add houdini.solaris.default metadata to turn on smoothing default on the render settings LOP (HTOA-1940)
- Import/export materials from usd files (HTOA-1948)
- Ship OSL includes (HTOA-1906)
A wide range of shading effects such as snow, dust, sand, and moss, can be achieved using input_per_axis (Y).
Render times of a simple scene with volume_scatter.samples=30: AOV denoising with the OptiX denoiser: Upgraded from the Optix 6 to Optix 7 denoiser. This newer denoiser supports denoising AOVs in a way that allows the denoised result to be compositable. Previous OptiX denoisers had no guarantees that the denoised results would combine correctly. ARNOLD-11726
Rollover images to view with and without triplanar.input_per_axis (Y)
AA AA_max Arnold 7.0 Arnold 7.1 4 50 5:28min (node update: 5:20min) 8 sec (node update: 0 sec) AiFindDriverType()
is now case insensitive, so asking, for instance, for a "png", "PNG", or "Png" will all return the png driver. This can be observed with kick -o
, which will now work for different case types. ARNOLD-11934TextureResolveUseExistingTx
stage is now much faster when many threads are trying to open textures for the first time with the use existing tx option enabled. On a 128-core machine we saw about an 8x speedup. ARNOLD-11689
options.imager_overhead_target_percent
which can be used to control how often imagers should run during a render. An imager_overhead_target_percent
setting of 0 will cause the imagers to only run at the end of the render. The default value of 1 will periodically run the imager during the render so that the overhead from running the imager is no more than approximately 1%. ARNOLD-11750instanceidxs_
prefix on the instancer node. ARNOLD-12142options.reference_time
attribute is now also used as the time the grid data exists, so velocity motion blur is relative to this reference time. Usually this is zero, which for frame-relative time values means "on the frame", which is typical of OpenVDB simulation data. ARNOLD-12143
USD Enhancements
API Additions
Incompatible Changes
ARNOL_2023
licensing. ARNOL_2023
licenses.
Bug Fixes
- htoa#1393 - Propagate exr autocrop option to AOVs
- htoa#1581 - Fix ramp element connections in Solaris
- htoa#1892 - Fix light filter dialog errors
- htoa#1896 - Fix licensing issue on Windows
- htoa#1902 - Set logging on translation universe
- htoa#1914 - Disable enable progressive render toggle in GPU mode
- htoa#1924 - Fix colorspace menus for default OCIO profile
- htoa#1932 - Fix issues with arnold_procedural_viewport HDA
- htoa#1943 - Update default usdShaderTypeToken in Solaris material translation
- htoa#1951 - Fix float_to_rgb shader - don't create clashing output parameters
- ARNOLD-11958 - Color correct shader produces incorrect values with small gamma values
- ARNOLD-11852 - Memory leak with imagers when rendering multiple frames
- ARNOLD-11835 - Full frame imagers crash with negative render region
- ARNOLD-11827 - Intel Alder Lake CPUs did not always use high performance cores in Windows
- ARNOLD-11795 - Spotlight penumbra should affect the specular intensity
- ARNOLD-11667 - GPU and CPU+FIS filtering generated sampling patterns that could alias
- ARNOLD-11242 - 'n' key was no longer toggling AI denoisers in kick IPR
- ARNOLD-10400 - Volume motion blur advection computation was incorrect
- ARNOLD-10391 - Volume motion blur used incorrect motion/shutter intervals
- ARNOLD-11889 - Maketx --monochrome-detect should generate Y not R image for exr formats
- ARNOLD-11968 - AiUniverseGetRenderSession returns invalid pointer instead of null if the session was previously destroyed
- ARNOLD-11982 - Texture invalidation in Linux and macOS occurred even when texture was not modified
- ARNOLD-12055 - [GPU] Crash switching from CPU to GPU with optix denoiser
- ARNOLD-10577 - [GPU] Textured skydome_light leaks memory over multiple frames in a session