This change brings the following improvements on the user level
- Support of GPUs with gfx12 architecture
- New HIP-RT library which in addition to the gfx12 support brings
various bug-fixes.
The known limitation of gfx12 is that OpenImageDenoiser does not yet
support this GPU architecture. This means that while Cycles will use the
full advantage of the gfx12 (including hardware accelerated ray-tracing),
denoising will only be possible on CPU, or secondary gfx11 or below GPU.
This is something that requires a change in OIDN and it is to late to do
it for Blender 4.4, but it is something to look forward for Blender 4.5.
The gfx12 changes for the pre-compiled kernels is rather trivial,
so it comes together (in the same PR) as the bigger HIP-RT change.
On the development side this change brings the following improvements:
- One step compile and link (much simpler CMake rules)
- Embedding BVH binaries in hiprt dll (which makes it easier to package
and load, without relying on special path configuration)
Co-authored-by: Sahar Kashi <sahar.kashi@amd.com>
Co-authored-by: Sergey Sharybin <sergey@blender.org>
Co-authored-by: Brecht Van Lommel <brecht@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/133129
Updates the prebuilt libs to the versions used in 4.4
Also adds a check to ensure users are using at least the version of VS2022, that was used to compile the libraries
Pull Request: https://projects.blender.org/blender/blender/pulls/134405
This commit introduces proper handling of ROCm 5 and ROCm 6 runtimes on
Linux, based on the version of the ROCm compiler used at build time.
Previously, HIPEW (the HIP equivalent of Cuda Wrangler) defaulted to
loading the ROCm 5 runtime. If ROCm 5 was unavailable, it would attempt
to load ROCm 6. However, ROCm 6 introduces changes in certain
structures and functions that are not backward compatible, leading to
potential issues when kernels compiled with the ROCm 6 compiler are
executed on the ROCm 5 runtime.
### Summary of Changes:
**Separation of Structures and Functions:**
Structures and functions are now separated into hipew5 and hipew6 to
accommodate the differences between ROCm versions.
**Build-Time Version Detection:**
The ROCm version is determined during build time, and the corresponding
hipew5 or hipew6 is included accordingly.
**Runtime Default to ROCm 6:**
By default, HIPEW now loads the ROCm 6 runtime and
includes hipew6 (Linux only).
**JIT Compilation Behavior:**
Since ROCm 6 is the default version, JIT compilation is supported only
when the ROCm 6 compiler is detected at runtime.
**HIP-RT Update:**
HIP-RT has been updated to load the ROCm 6 runtime by default.
These changes ensure compatibility and stability when switching
between ROCm versions, avoiding issues caused by runtime
and compiler mismatches.
Co-authored-by: Alaska <alaskayou01@gmail.com>
Co-authored-by: Sergey Sharybin <sergey@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/130153
This change switches Cycles to an opensource HIP-RT library which
implements hardware ray-tracing. This library is now used on
both Windows and Linux. While there should be no noticeable changes
on Windows, on Linux this adds support for hardware ray-tracing on
AMD GPUs.
The majority of the change is typical platform code to add new
library to the dependency builder, and a change in the way how
ahead-of-time (AoT) kernels are compiled. There are changes in
Cycles itself, but they are rather straightforward: some APIs
changed in the opensource version of the library.
There are a couple of extra files which are needed for this to
work: hiprt02003_6.1_amd.hipfb and oro_compiled_kernels.hipfb.
There are some assumptions in the HIP-RT library about how they
are available. Currently they follow the same rule as AoT
kernels for oneAPI:
- On Windows they are next to blender.exe
- On Linux they are in the lib/ folder
Performance comparison on Ubuntu 22.04.5:
```
GPU: AMD Radeon PRO W7800
Driver: amdgpu-install_6.1.60103-1_all.deb
main hip-rt
attic 0.1414s 0.0932s
barbershop_interior 0.1563s 0.1258s
bistro 0.2134s 0.1597s
bmw27 0.0119s 0.0099s
classroom 0.1006s 0.0803s
fishy_cat 0.0248s 0.0178s
junkshop 0.0916s 0.0713s
koro 0.0589s 0.0720s
monster 0.0435s 0.0385s
pabellon 0.0543s 0.0391s
sponza 0.0223s 0.0180s
spring 0.1026s 1.5145s
victor 0.1901s 0.1239s
wdas_cloud 0.1153s 0.1125s
```
Co-authored-by: Brecht Van Lommel <brecht@blender.org>
Co-authored-by: Ray Molenkamp <github@lazydodo.com>
Co-authored-by: Sergey Sharybin <sergey@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/121050
The issue is caused by an external dependency to
/opt/homebrew/opt/libb2/lib/libb2.1.dylib
This change adds a test to catch the same issue in the future,
and moves the arm64 libraries to a newer hash with fixed Python.
Pull Request: https://projects.blender.org/blender/blender/pulls/124096
