OpenCL issue and motion blur (AMD 7870 Pitcairn) #50082

Closed
opened 2016-11-20 14:05:01 +01:00 by soulfire · 15 comments

blender-2.78-2c26a7b-win64
Crimson 16.10.3
Win10

When rendering ps test.blend without motion blur checked
render result is non-visible.
ps test.jpg

Checking Motion Blur and rendering again, gives correct render.
ps test2.jpg

Also, you can see difference between rendering times.

blender-2.78-2c26a7b-win64 Crimson 16.10.3 Win10 When rendering [ps test.blend](https://archive.blender.org/developer/F404014/ps_test.blend) without motion blur checked render result is non-visible. ![ps test.jpg](https://archive.blender.org/developer/F404019/ps_test.jpg) Checking Motion Blur and rendering again, gives correct render. ![ps test2.jpg](https://archive.blender.org/developer/F404021/ps_test2.jpg) Also, you can see difference between rendering times.
Author

Changed status to: 'Open'

Changed status to: 'Open'
Author

Added subscriber: @TomG

Added subscriber: @TomG
Member

Added subscriber: @MartijnBerger

Added subscriber: @MartijnBerger
Mai Lavelle was assigned by Martijn Berger 2016-11-20 18:08:13 +01:00
Member

More AMD opencl goodness for you Mai

More AMD opencl goodness for you Mai
Author

I have now installed Crimson 16.10.4 and it takes to long to render.

I have now installed Crimson 16.10.4 and it takes to long to render.
Member

Can't reproduce. Could you please try a daily build from https://builder.blender.org/download/ and report back wheather you still see the issue?

Can't reproduce. Could you please try a daily build from https://builder.blender.org/download/ and report back wheather you still see the issue?
Author

Crimson 16.11.5
blender-2.78-8ce6de3-win64
Still the same issue (rendered without motion blur).
Also, what I found if you render without motion blur and then check motion blur, render kernels are loading as if for the first time.

ps test612png.png

Crimson 16.11.5 blender-2.78-8ce6de3-win64 Still the same issue (rendered without motion blur). Also, what I found if you render without motion blur and then check motion blur, render kernels are loading as if for the first time. ![ps test612png.png](https://archive.blender.org/developer/F414885/ps_test612png.png)

Added subscriber: @VukGardasevic

Added subscriber: @VukGardasevic

This is probably related to a specific GPU architecture / family of cards.

I could not recreate it with Bonaire R7 360, Win 7 64 bit with driver 16.8.3 on Blender Build 8ce6de3

This is probably related to a specific GPU architecture / family of cards. I could not recreate it with Bonaire R7 360, Win 7 64 bit with driver 16.8.3 on Blender Build `8ce6de3`
Author

I found something else:
If I render with Progressive refine, black screen is not present only weird shading on sphere:
ps test PREFINE .png

If I render with Progressive refine + Motion blur, it renders OK (the same as with motion blur). Only with Progressive refine, it renders slower.

Maybe this will be enough to find the source of the problem.
ps testPR+MBLUR.png

@VukGardasevic , @MaiLavelle should I open new thread for todays build for this ?

I found something else: If I render with Progressive refine, black screen is not present only weird shading on sphere: ![ps test PREFINE .png](https://archive.blender.org/developer/F414897/ps_test_PREFINE_.png) If I render with Progressive refine + Motion blur, it renders OK (the same as with motion blur). Only with Progressive refine, it renders slower. Maybe this will be enough to find the source of the problem. ![ps testPR+MBLUR.png](https://archive.blender.org/developer/F414899/ps_testPR_MBLUR.png) @VukGardasevic , @MaiLavelle should I open new thread for todays build for this ?
Author

Error with todays build and new Crimson Relive drivers
Capture3.JPG

Error with todays build and new Crimson Relive drivers ![Capture3.JPG](https://archive.blender.org/developer/F415795/Capture3.JPG)

Added subscriber: @AleksanderTarkhanov

Added subscriber: @AleksanderTarkhanov

AMD R9_290, AMD GPU Pro 16.40 driver, Linux x64
Blender 2.78a, 2-78-bd42987 (20 dec)

'ps test.blend' rendering ok for me with any combination of 'motion blur' and 'progressive refine' options. And it takes quite a token amount of memory, just about 30 - 50Mb (looking at 'Frame | Time | Mem' string after render).

AMD R9_290, AMD GPU Pro 16.40 driver, Linux x64 Blender 2.78a, 2-78-bd42987 (20 dec) 'ps test.blend' rendering ok for me with any combination of 'motion blur' and 'progressive refine' options. And it takes quite a token amount of memory, just about 30 - 50Mb (looking at 'Frame | Time | Mem' string after render).
Member

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Member

Without being able to reproduce I can only assume this is a driver bug. You should check you have the latest drivers and try lowering the tile size.

Without being able to reproduce I can only assume this is a driver bug. You should check you have the latest drivers and try lowering the tile size.
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Reference: blender/blender#50082
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