Cycles regression testing for GPU devices #82193
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Reference: blender/blender#82193
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Background
The Cycles automated regression tests so far only ran on the CPU.
With some environment flags it was possible to execute a script that runs them on other devices, but this is cumbersome. The goal of this task is to add a CMake option to enable running the regression tests on GPU devices in addition to CPU devices.
The reference images are currently only valid for CPU rendering. Keeping differeing reference images updated will have to wait until we have CI infrastructure for testing GPU rendering. For now we can do a few things:
Status
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscriber: @brecht
Added subscriber: @Jeroen-Bakker
This issue was referenced by
dd391d38f6
This issue was referenced by
f75b09e7e6
This issue was referenced by
2a430a670c
There is now an initial implementation of this, with a
CYCLES_TEST_DEVICES
cmake variable that you canCUDA
,OPTIX
,OPENCL
add to.CUDA and OptiX tests are now passing after blacklisting a bunch of tests that show differences. Most of them are known limitations, a few would be worth investigating as potential bugs. The time for running the tests can be quite long compared to CPU currently, it's likely possible to optimize this with bigger tiles. For OptiX the hair test takes multiple minutes, that's likely a bug somewhere.
For OpenCL, this is not very usable at all, as the kernel is recompiled many times. Completing the tests likely takes hours because of that, I have no finished it. With my AMD card some of the tests are also causing BSoD, so I have not completed running them.
Added subscriber: @pmoursnv