GPU/CPU opencl mixed rendering makes tile artifacts with brick texture.
Closed, ResolvedPublic

Description

System Information
Kubuntu 16.04.3 kernel 4.10 AMDGPUpro 17.30
CPU AMD R7 1700
GPU AMD Rx 480 8gb

Blender Version
Broken: 68994-119846a6bb3
Worked: Not use GPU/CPU mixed rendering

Short description of error

brick texture is broken with GPU/CPU opencl mixed rendering

I have seen these tiles artifacts with other textures, but it's pretty subtle and easy to retouch, in this case It's pretty hard to fix even with image editing.
It's worse when you set 2 threads (1 CPU thread/1 GPU thread)

Exact steps for others to reproduce the error

  1. make a plane, UV unwrap it
  2. assign a new material, then add brick texture node and a diffuse node, set the texture color to the diffuse color input
  3. add some lights, then render