Cycles rendering using python script does not render correctly #42938

New Issue

Arnout Boelens · 2014-12-17T18:08:56+01:00

Arnout Boelens commented

2014-12-17 18:08:56 +01:00

System Information
Debian Linux (unstable)
VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller

Blender Version
Broken: 2.71 2.72b
Worked: 2.70

Short description of error
Making a scene, rendering it, and saving it as an image using a python script gives all my objects a gray/white checkered surface. Using the script to create a scene and then render it in the GUI works fine.

Exact steps for others to reproduce the error
Run attached python script. blender version 2.70 works, 2.71 and up does not

**System Information** Debian Linux (unstable) VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller **Blender Version** Broken: 2.71 2.72b Worked: 2.70 **Short description of error** Making a scene, rendering it, and saving it as an image using a python script gives all my objects a gray/white checkered surface. Using the script to create a scene and then render it in the GUI works fine. **Exact steps for others to reproduce the error** Run attached python script. blender version 2.70 works, 2.71 and up does not

Arnout Boelens commented

2014-12-17 18:08:56 +01:00

Changed status to: 'Open'

Arnout Boelens commented

2014-12-17 18:08:56 +01:00

Added subscriber: @boeleman

Arnout Boelens commented

2014-12-17 18:50:08 +01:00

Python script 3DblenderV.py
Result Blender 2.70
Result Blender 2.72
Background image read by script
x3d file loaded by script gave an upload failure because it is too large

Python script [3DblenderV.py](https://archive.blender.org/developer/F132645/3DblenderV.py) Result Blender 2.70 ![3DrenderV270.png](https://archive.blender.org/developer/F132646/3DrenderV270.png) Result Blender 2.72 ![3DrenderV272.png](https://archive.blender.org/developer/F132648/3DrenderV272.png) Background image read by script ![background.jpg](https://archive.blender.org/developer/F132651/background.jpg) x3d file loaded by script gave an upload failure because it is too large

Sergey Sharybin commented

2014-12-18 09:37:01 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-12-18 09:37:01 +01:00

Debugging what might be wrong in such a long script is quite difficult unless you're the original author of it. So please strip the scene and the script as much as possible. it also looks like you can provide .blend file instead.

Arnout Boelens commented

2014-12-18 18:05:20 +01:00

I think I found the line in the script that is causing trouble. Writing my files like this:

bpy.data.images['Render Result'].save_render(filepath=filename_ofimage+'.'+str(currentframe).zfill(4)+'.png')

gives the bad render result, while writing like this:

bpy.data.images['Render Result'].save_render(filepath='image.png')

gives the correct result.

I think I found the line in the script that is causing trouble. Writing my files like this: bpy.data.images['Render Result'].save_render(filepath=filename_ofimage+'.'+str(currentframe).zfill(4)+'.png') gives the bad render result, while writing like this: bpy.data.images['Render Result'].save_render(filepath='image.png') gives the correct result.

Sergey Sharybin commented

2014-12-22 11:31:26 +01:00

I'm not sure why would that be an issue. But with the files you're provided we\re unable to help you. It is important to have as small as possible setup which clearly demonstrates the issue. For now we only have rather really huge script which we can not even run because no input data for it is uploaded.

Arnout Boelens commented

2014-12-24 17:26:26 +01:00

I wrote a more minimal script bug.py, This is the x3d file bug.x3d. Run: blender -P bug.py -b . This will generate 3 files: bug.png, bug.0000.png, and bug.0001.png. The first 2 look fine, but the last one "bug.0001.png" does not render.

I wrote a more minimal script [bug.py](https://archive.blender.org/developer/F133422/bug.py), This is the x3d file [bug.x3d](https://archive.blender.org/developer/F133423/bug.x3d). Run: blender -P bug.py -b . This will generate 3 files: bug.png, bug.0000.png, and bug.0001.png. The first 2 look fine, but the last one "bug.0001.png" does not render.

blender-admin commented

2014-12-25 11:45:22 +01:00

This issue was referenced by 7bb29c5528

This issue was referenced by 7bb29c55287468dde964ac16c4b47ffad498e974

Sergey Sharybin commented

2014-12-25 11:47:36 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2014-12-25 11:47:36 +01:00

Sergey Sharybin commented

2014-12-25 11:47:36 +01:00

Closed by commit 7bb29c5528.