Maniphest T91178

Cannot Save Alpha from Smoke Simulation after successful Render
Closed, Duplicate

Assigned To
None
Authored By
Ahmad Bilal (SomeAB)
Sep 4 2021, 12:59 PM
Tags
  • BF Blender
Subscribers
Ahmad Bilal (SomeAB)
Philipp Oeser (lichtwerk)

Description

System Information
Operating system: Windows 10
Graphics card: Intel internal

Blender Version
Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen) ALL afaik
Worked: (newest version of Blender that worked as expected) None

Short description of error
After I have baked my smoke sim (modular), I render it out successfully frame-by-frame. But when I try to save the render in .png/.tiff/.exr file format with alpha channel 'enabled' .. It does not save properly, and I cannot see the smoke in my .png/.tiff/.exr file when I open it in a image-editor like photoshop/windows image viewer

However when I save it without alpha channel enabled, the smoke is saved properly, albeit with black background (since there is no alpha channel).

When I save it in targa or targa raw (.tga) format, despite alpha channel enabled, I do not get transparent background .. however the smoke saves correctly (unlike in other formats).

Attaching the .blend file

Exact steps for others to reproduce the error

  1. Bake the simulation
  2. Switch to a frame like frame 50 (in the middle) .. and render it out using 'F12' (Remember to have transparency enabled in Cycles (Render Settings>Film>Transparent)
  3. Try saving the render as .png file with RGBA
  4. Compare the image saved with what you see in Render

In the image below, you can see on left side the 'Render' .. and the same render after saved and reopened in image editor on Right

Event Timeline

Ahmad Bilal (SomeAB) created this task.Sep 4 2021, 12:59 PM
Ahmad Bilal (SomeAB) updated the task description.Sep 4 2021, 1:02 PM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).Sep 6 2021, 10:52 AM