cycles displacement not altering mesh in final (F12) render with Displacement=True, only in preview (Shift-z) render #49379

Closed
opened 2016-09-16 18:05:20 +02:00 by Brian Cary · 9 comments

System Information
Linux 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11 18:01:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
with Nvidia Geforce 780Ti graphics card (3 gigs graphics ram), Cuda v.7.5

Blender Version
2.78 release candidate in experimental mode

Steps to recreate bug:
This bug occurs in either CPU or GPU rendering mode

Set Properties|Material|Settings|Displacement = True:
Then within Cycles materials, create any simple material with an Image Texture connected to the Displacement socket of the Material Output node.
When you PREVIEW (SHIFT-Z) the displacement works great.
When you RENDER (F12), the Image Texture will
not displace the mesh at all
However, internal Textures (such as wave, voronoi, magic, etc.) will work fine; bug only manifests when an image texture is used.

Using Properties|Material|Settings|Displacement = Bump:

  everything works

Using Properties|Material|Settings|Displacement = BOTH:

  everything works

simple blend file attached:

displacementBug.blend

**System Information** Linux 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11 18:01:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux with Nvidia Geforce 780Ti graphics card (3 gigs graphics ram), Cuda v.7.5 **Blender Version** 2.78 release candidate in experimental mode Steps to recreate bug: This bug occurs in either CPU or GPU rendering mode Set Properties|Material|Settings|Displacement = True: Then within Cycles materials, create any simple material with an Image Texture connected to the Displacement socket of the Material Output node. When you PREVIEW (SHIFT-Z) the displacement works great. When you RENDER (F12), the Image Texture will not displace the mesh at all However, internal Textures (such as wave, voronoi, magic, etc.) will work fine; bug only manifests when an image texture is used. Using Properties|Material|Settings|Displacement = Bump: ``` everything works ``` Using Properties|Material|Settings|Displacement = BOTH: ``` everything works ``` simple blend file attached: [displacementBug.blend](https://archive.blender.org/developer/F361243/displacementBug.blend)
Author

Changed status to: 'Open'

Changed status to: 'Open'
Author

Added subscriber: @brinux

Added subscriber: @brinux
Member

Closed as duplicate of #49252

Closed as duplicate of #49252
Author

Changed status from 'Duplicate' to: 'Open'

Changed status from 'Duplicate' to: 'Open'
Author

Thank you for the quick response.
I don't believe this bug is a duplicate of #49252. I've read that one, and it involves blender crashing.
My bug does NOT cause blender to crash. Instead, it RENDERS, but incorrectly; by disregarding the microdisplacement at render time when displacement is set to True.

Thank you for the quick response. I don't believe this bug is a duplicate of #49252. I've read that one, and it involves blender crashing. My bug does NOT cause blender to crash. Instead, it RENDERS, but incorrectly; by disregarding the microdisplacement at render time when displacement is set to True.
Member

Added subscriber: @LazyDodo

Added subscriber: @LazyDodo
Member

Please test with rc2.

Please test with rc2.
Author

Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
Brian Cary self-assigned this 2016-09-16 23:12:17 +02:00
Author

Tested with Blender 2.78 Rc2 and micro displacements now render correctly using Displacement=True
Closing this task...

PS. Thanks, you guys are awesome!

Tested with Blender 2.78 Rc2 and micro displacements now render correctly using Displacement=True Closing this task... PS. Thanks, you guys are awesome!
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Reference: blender/blender#49379
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