Image based displacement (when set to true) closes blender on CPU and refuses to render on GPU #49266

New Issue

Pratyaksh Gaur · 2016-09-06T02:24:30+02:00

Pratyaksh Gaur commented

2016-09-06 02:24:30 +02:00

System Information
Windows 7 SP1
I7 4700MQ
Nvidia geforce GT 755m
16 GB Memory, with 40GB dedicated to swap on disk

Blender Version
Broken: 2.78 RC (blender-2.78.0-git.0e5089c-windows64)
Worked: Don't know, it's my first try

Short description of error

When using external image file to drive displacement in the material, blender closes without warning when I set displacement to true in "settings" section in material tab (viewport must be set to render for that to happen instantly, otherwise it crashes when you set viewport to render, after you set displacement to true). This is when rendering is set to CPU. On GPU, it gives a cuda error on render or viewport render.

Exact steps for others to reproduce the error

Open the attached blend file
Set viewport to "Rendered"
In the materials tab, go to settings section and set displacement to "True"
After blender crashes, open again and repeat steps with renderer set to GPU, for finding GPU bug

Misc info

Displacement map is in TIFF 16bit format. Textures are both 8k in resolution. I didn't have time to reduce the size for another test file, but I have tested it with 2k textures as well, same results. Didn't save that file. If you guys want heightmap in lower resolution, please let me know.

Please note
Setting displacement to "Both" option works for now, but somehow doesn't look right. I'll get back to it tomorrow.

I know this bug has been reported before, but just in case there wasn't enough info before.
Displacement issue blender2.78rc test.zip

**System Information** Windows 7 SP1 I7 4700MQ Nvidia geforce GT 755m 16 GB Memory, with 40GB dedicated to swap on disk **Blender Version** Broken: 2.78 RC (blender-2.78.0-git.0e5089c-windows64) Worked: Don't know, it's my first try **Short description of error** When using external image file to drive displacement in the material, blender closes without warning when I set displacement to true in "settings" section in material tab *(viewport must be set to render for that to happen instantly, otherwise it crashes when you set viewport to render, after you set displacement to true)*. This is when rendering is set to CPU. On GPU, it gives a cuda error on render or viewport render. **Exact steps for others to reproduce the error** 1. Open the attached blend file 2. Set viewport to "Rendered" 3. In the materials tab, go to settings section and set displacement to "True" 4. After blender crashes, open again and repeat steps with renderer set to GPU, for finding GPU bug **Misc info** Displacement map is in TIFF 16bit format. Textures are both 8k in resolution. I didn't have time to reduce the size for another test file, but I have tested it with 2k textures as well, same results. Didn't save that file. If you guys want heightmap in lower resolution, please let me know. **Please note** Setting displacement to "Both" option works for now, but somehow doesn't look right. I'll get back to it tomorrow. I know this bug has been reported before, but just in case there wasn't enough info before. [Displacement issue blender2.78rc test.zip](https://archive.blender.org/developer/F353798/Displacement_issue_blender2.78rc_test.zip)

Mai Lavelle was assigned by Pratyaksh Gaur

2016-09-06 02:24:30 +02:00

Pratyaksh Gaur commented

2016-09-06 02:24:30 +02:00

Changed status to: 'Open'