OpenExr file save bug #47137

New Issue

Michael P. · 2016-01-07T22:52:18+01:00

Michael P. commented

2016-01-07 22:52:18 +01:00

System Information
System: Windows 7 64bit
RAM: 4096 MB
renderer: 'GeForce GTX 760/PCIe/SSE2'
vendor: 'NVIDIA Corporation'
version: '4.5.0 NVIDIA 353.30'

Blender Version
Broken: 2.76, 2.77 (d96ffde)
Worked: (optional)

Short description of error
When I save a render as OpenExr file and change between the four lossless codecs, then at some point the file becomes bigger then it should be.

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps

Please check also the attached images:

Open the attached file and render
Note: Don't re-render between the saves
Click "F3" to save the file
Select the codec "ZIP (lossless)" and save it as "save-zip.exr"
Click "F3" to save the file
Select the codec "PIZ (lossless)" and save it as "save-piz.exr"
Click "F3 to save the file
Select the codec "RLE (lossless)" and save it as "save-rle.exr"
The file should be now larger than intended
From this point no matter which lossless codec is selected the file will have the same size

This does't happen if the file is renderd every time, i.e. during rendering of an animation.

I tested the lossy codes too, but (so far) whitout getting this issue.

open-exr-multiple-saves-bug.blend

**System Information** System: Windows 7 64bit RAM: 4096 MB renderer: 'GeForce GTX 760/PCIe/SSE2' vendor: 'NVIDIA Corporation' version: '4.5.0 NVIDIA 353.30' **Blender Version** Broken: 2.76, 2.77 (d96ffde) Worked: (optional) **Short description of error** When I save a render as OpenExr file and change between the four lossless codecs, then at some point the file becomes bigger then it should be. **Exact steps for others to reproduce the error** Based on a (as simple as possible) attached .blend file with minimum amount of steps Please check also the attached images: - Open the attached file and render - Note: Don't re-render between the saves - Click "F3" to save the file - Select the codec "ZIP (lossless)" and save it as "save-zip.exr" - Click "F3" to save the file - Select the codec "PIZ (lossless)" and save it as "save-piz.exr" - Click "F3 to save the file - Select the codec "RLE (lossless)" and save it as "save-rle.exr" - The file should be now larger than intended - From this point no matter which lossless codec is selected the file will have the same size This does't happen if the file is renderd every time, i.e. during rendering of an animation. I tested the lossy codes too, but (so far) whitout getting this issue. ![open-exr-multiple-saves-bug-2.png](https://archive.blender.org/developer/F271950/open-exr-multiple-saves-bug-2.png) ![open-exr-multiple-saves-bug-1.png](https://archive.blender.org/developer/F271951/open-exr-multiple-saves-bug-1.png) [open-exr-multiple-saves-bug.blend](https://archive.blender.org/developer/F271952/open-exr-multiple-saves-bug.blend)

Michael P. commented

2016-01-07 22:52:18 +01:00

Changed status to: 'Open'