Denoising feature. Bug on GPU render (Mac OsX 10.11.6)
Open, ConfirmedPublic


System Information
Osx 10.11.6 (MacBookPro11,5 Intel Core i7)
AMD Radeon R9-M370X

Blender Version
2.78-db8bc1d9829-OSX-10.6 (jul 21)

Short description of error
Denoising feature is not working on GPU rendering. It works on CPU rendering. Using Cycles.

Scene test

CPU render

GPU render

Exact steps for others to reproduce the error
I just created a mokey with a diffuse shader and sun lamp. Denoising activated using default settings and rendered on CPU and GPU. Tested several times with similar corrupt image result on GPU.


david serrano (dserama) renamed this task from Denoising bug on GPU render (Mac OsX 10.11.6) to Denoising feature. Bug on GPU render (Mac OsX 10.11.6).

I tried to repro this with Intel + macOS (with a simplified megakernel since the full one doesn't work), but denoising seemed to work ok. @Mai Lavelle (maiself), do you have a way to test this perhaps? Not sure who maintains macOS OpenCL now.

I can't reproduce this with the hardware I have available (no macOS here). Maybe @Lukas Stockner (lukasstockner97) can take a look?

Sergey Sharybin (sergey) triaged this task as Confirmed priority.Jul 28 2017, 3:11 PM
Sergey Sharybin (sergey) claimed this task.

I can reproduce the issue on so called trashcan here in the studio.

Would need to have a closer look, but flying to conference tomorrow. So if someone fees like looking into the issue -- by the all means please go ahead.

I have the 'same' issue, except that the rendered tiles on GPU are completely black. No artifacts.
OSX 10.12.6
iMac 5k, 4Ghz Intel i7
AMD Radeon R9 M395X 4096Mb

same as Roel "rendered tiles on GPU are completely black. No artifacts." (entire render is black)
using 10.13.1
radeon pro 580
if I go into the denoiser settings and turn off direct diffuse the denoised tiles aren't black