Bake all dynamics does not bake last frame of frame range [Even though it appears at first so!] #97114

New Issue

Jannes Nagel · 2022-04-06T17:17:46+02:00

Jannes Nagel commented

2022-04-06 17:17:46 +02:00

System Information
Operating system: Windows 10
Graphics card: RTX 2070

Blender Version
Broken: 3.0 & 3.2
Worked: None found

Short description of error
When baking particle systems for a specific frame range the last frame of the frame range will not be baked.
This results in rendered sequences having an no particles in their last frame.

Seems to be an issue with render frame range being inclusive and bake using it exclusive.

Exact steps for others to reproduce the error
bug.blend

Delete all baked dynamics

Bake all dynamics

It appears as if frame 50 actually has particles

Save .blend file

Close blender

Open the file again

Frame 50 does NOT have particles!

Render the sequence

Last frame will NOT have particles (even though it should)

**System Information** Operating system: Windows 10 Graphics card: RTX 2070 **Blender Version** Broken: 3.0 & 3.2 Worked: None found **Short description of error** When baking particle systems for a specific frame range the last frame of the frame range will not be baked. This results in rendered sequences having an no particles in their last frame. Seems to be an issue with render frame range being inclusive and bake using it exclusive. **Exact steps for others to reproduce the error** [bug.blend](https://archive.blender.org/developer/F12978496/bug.blend) # Delete all baked dynamics # Bake all dynamics # It appears as if frame 50 actually has particles # Save .blend file # Close blender # Open the file again # Frame 50 does NOT have particles! # Render the sequence # Last frame will NOT have particles (even though it should)

Jannes Nagel commented

2022-04-06 17:17:46 +02:00

Added subscriber: @Jannes-Nagel

Jannes Nagel commented

2022-04-06 17:20:01 +02:00

Seems to be duplicate to: https://developer.blender.org/T68290

Jannes Nagel commented

2022-04-06 17:37:31 +02:00

I found a fix for this by changing psys_get_pointcahce_start_end

void psys_get_pointcache_start_end(Scene *scene, ParticleSystem *psys, int *sfra, int *efra)
{
  ParticleSettings *part = psys->part;

  *sfra = max_ii(1, (int)part->sta);
  *efra = min_ii((int)(part->end + part->lifetime + 1.0f), max_ii(scene->r.pefra, scene->r.efra+1));//Inclusive range :)
}

Add +1 to make the frame range inclusive solves the issue on my end.

I found a fix for this by changing psys_get_pointcahce_start_end ``` void psys_get_pointcache_start_end(Scene *scene, ParticleSystem *psys, int *sfra, int *efra) { ParticleSettings *part = psys->part; *sfra = max_ii(1, (int)part->sta); *efra = min_ii((int)(part->end + part->lifetime + 1.0f), max_ii(scene->r.pefra, scene->r.efra+1));//Inclusive range :) } ``` Add +1 to make the frame range inclusive solves the issue on my end.

Jannes Nagel commented

2022-04-06 18:14:00 +02:00

Diff here:
https://developer.blender.org/differential/diff/50161/

Should resolve:
https://developer.blender.org/T68290
https://developer.blender.org/T81253

Potentially also:
https://developer.blender.org/T86865

Diff here: https://developer.blender.org/differential/diff/50161/ Should resolve: https://developer.blender.org/T68290 https://developer.blender.org/T81253 Potentially also: https://developer.blender.org/T86865

Pratik Borhade commented

2022-04-07 05:26:57 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-04-07 05:27:12 +02:00

Closed as duplicate of #68290

Pratik Borhade closed this issue

2022-04-07 05:27:12 +02:00

Campbell Barton commented

2022-04-14 04:05:33 +02:00

Added subscriber: @ideasman42

Campbell Barton commented

2022-04-14 04:05:33 +02:00

Note that I can't redo the bug with the test file and steps given. Frame 50 has particles after deleting the bake and re-baking.

Edit: managed to redo: #68290.

Note that I can't redo the bug with the test file and steps given. Frame 50 has particles after deleting the bake and re-baking. Edit: managed to redo: #68290.

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Bake all dynamics does not bake last frame of frame range [Even though it appears at first so!] #97114

Delete all baked dynamics

Bake all dynamics

It appears as if frame 50 actually has particles

Save .blend file

Close blender

Open the file again

Frame 50 does NOT have particles!

Render the sequence

Last frame will NOT have particles (even though it should)