Cycles OpenCL - Broken kernels w/RX Vega 64 - Blender 2.92.0 #85520
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Reference: blender/blender#85520
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CPU AMD FX-9590
Chipset 990FX
OS Windows 10 Pro
Videocard RX Vega 64
Blender Version
Broken: Blender ? to 2.92.0
Working: Blender 2.83.14 ?
Short description of error
Cycles GPU OpenCL rendering not working with RX Vega 64. Blender reported kernel compilation errors either for viewport and offline modes.
Exact steps for others to reproduce the error
Default cube scene not working
Viewport_blender_system_info.txt
Viewport_blender_debug_output.txt
Added subscriber: @Leo_V
#86647 was marked as duplicate of this issue
Cycles broken with RX Vega64 - Blender 2.90 - 91.2to Fix Cycles - Broken kernels w/RX Vega 64 - Blender 2.90 - 91.2Added subscriber: @rjg
Changed status from 'Needs Triage' to: 'Needs User Info'
Please open Blender's installation directory and double click on the
blender_debug_gpu.cmd. This will start Blender in debug mode and create log files. Try to make Blender fail to render again. Once it does, close Blender. The Windows Explorer should open and show you up to two files, a debug log and the system information. Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop.This comment was removed by @Leo_V
Changed status from 'Needs User Info' to: 'Needs Triage'
Added subscriber: @mano-wii
Seeing the files I found this error:
Split kernel error: failed to load kernel_indirect_backgroundThat reminds me #84461 (Cycles: Split kernel error with OpenCL)
But you tested different drivers, one of which is from 2019 and still didn't work!
It is interesting to note that it works in blender 2.83 so it looks like a regression.
Is this with the latest driver?
Does the problem happen in the viewport preview and in the final render?
Adding last driver version Radeon-Software-Adrenalin-2020-21.2.2-Win10-64Bit-Feb11-Non-WHQL to the list.
blender_system_info.txt
blender_debug_output.txt
Fix Cycles - Broken kernels w/RX Vega 64 - Blender 2.90 - 91.2to Cycles OpenCL - Broken kernels w/RX Vega 64 - Blender 2.90 - 91.2Tried with Radeon-Software-Adrenalin-2020-21.2.3-Win10-64bit-Feb22-Non-WHQL and viewport rendering is still failing. (Blender 2.91.2)
I could offline render (F12) the default cube this time, tried the Barcelona Pavillon and a heavier scene I´m working on and offline render seems to work.
Viewport rendering is not working for sure, same kernel_indirect_background error.
I´m already reporting this as a driver bug to AMD.
blender_system_info.txt
blender_debug_output.txt
Added subscriber: @tarnith
Also getting this bug with OpenCL rendering on AMD GPU with 2.92
Same setup works on 2.83 LTS
System Info
Operating system: Windows 10 Pro
CPU: Intel Xeon E5-2670
MB: Supermicro X9SRA
Ram: Samsung 16GB DDR3ECC FBDIMM 1033
Graphics card: AMD/ASUS R9 390 Strix 8GB
Graphics Driver: AMD Pro driver 2020.1027.1104.19925
Blender Version
Broken: 2.92.0
Short description of error
GPU rendering fails with a split kernel error ... Split kernel error: failed to load kernel_indirect_background
....Compiling render kernels
...Split kernel error: failed to load kernel_indirect_background
Cube doesn't render
Changing modes causes freeze
{F9842780}
blender_system_info.txt
Configure the user preferences to use OpenCL
Set the Device to GPU in the Render Properties
Set viewport to rendered (causes failed to load kernel)
Change viewport to any other mode and it locks until terminated
Problem persists with Blender 2.92.0
blender_system_info.txt
blender_debug_output.txt
Cycles OpenCL - Broken kernels w/RX Vega 64 - Blender 2.90 - 91.2to Cycles OpenCL - Broken kernels w/RX Vega 64 - Blender 2.90.0 to 2.92.0Adding new logs:
Default cubes scene, viewport (Split kernel error: failed to load kernel_indirect_background)
Viewport_blender_system_info.txt
Viewport_blender_debug_output.txt
LoneMonk scene, offline rendering/F12 (OpenCL error (-46): CL_INVALID_KERNEL_NAME)
Offline_blender_system_info.txt
Offline_blender_debug_output.txt
Adding report for Radeon-Pro-Software-Enterprise-21.q1-Win10 driver.
Radeon software UI reports 03-Feb-21 version for RX Vega 64.
Viewport rendering is not working.
Offline (f12) rendering seems to be partially working. Default cube and Barcelona Pavilion rendered ok, Lonely Monk failed.
Adding logs:
Viewport, Default Cube Scene (Split kernel error: failed to load kernel_indirect_background)
Viewport_Pro_blender_system_info.txt
Viewport_Pro_blender_debug_output.txt
Offline (F12), Lonely Monk (OpenCL error (-46): CL_INVALID_KERNEL_NAME)
Offline_Pro_blender_system_info.txt
Offline_Pro_blender_debug_output.txt
Adding report for Radeon-Software-Adrenalin-2020-21.3.1-Win10-64Bit-Mar24-WHQL driver.
Viewport rendering is not working.
Offline (f12) rendering seems to be working. Default Cube, Barcelona Pavilion and Lonely Monk tests rendered ok.
Adding logs:
Viewport, Default Cube Scene (Split kernel error: failed to load kernel_indirect_background)
Viewport_blender_system_info.txt
Viewport_blender_debug_output.txt
Offline (F12), no error logs.
I´m not having luck with relatively big scenes in 2.83.13.
Rolling back to 2.82a which seems to be more stable for Cycles rendering on this setup at the moment.
2.82a seems to was fine, now I´m using 2.90.0 which seems to work ok too (what happened ??)
Cycles OpenCL - Broken kernels w/RX Vega 64 - Blender 2.90.0 to 2.92.0to Cycles OpenCL - Broken kernels w/RX Vega 64 - Blender 2.92.0Using 2.82a proved to be the best to workaround the issue here.
2.83.14 Seems to be working fine, I´ll update if further testing shows the opposite.
2.93 Is working great at the moment
Added subscriber: @ankitm
Can we close it then ?
Yes please, rock solid so far, exterior archviz w/foliage work made without a problem.
Changed status from 'Needs Triage' to: 'Resolved'