DIsimprovement in calculating math nodes (Fractals) #69353

New Issue

Simeon Wallrath · 2019-08-31T13:24:40+02:00

Simeon Wallrath commented

2019-08-31 13:24:40 +02:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.60

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: Early build around 24.07.2018

Short description of error
When creating a Fractal (Mandelbulb) using math nodes, it takes a really long time to calculate after changing any Value (Blender might crash; it only uses 10% CPU and 5% GPU while being freezed on calculating though).
Jonas DIchelle, who originally created the Mandelbulb in Blender (file attached) and made a YouTube Tutorial (1) in which it works smoothly has confirmed that this is an Issue with newer 2.8 Versions (2).

(1) https://www.youtube.com/watch?v=WSQFt1Nruns
(2) https://twitter.com/JonasDichelle/status/1167526373449195527

Exact steps for others to reproduce the error
Switch bottom panel to Shader Editor
Switch to Eevee rendered view (already takes time)
Change any Value in the Node tree

mandelbulb (1).blend

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.60 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: Early build around 24.07.2018 **Short description of error** When creating a Fractal (Mandelbulb) using math nodes, it takes a really long time to calculate after changing any Value (Blender might crash; it only uses 10% CPU and 5% GPU while being freezed on calculating though). Jonas DIchelle, who originally created the Mandelbulb in Blender (file attached) and made a YouTube Tutorial (1) in which it works smoothly has confirmed that this is an Issue with newer 2.8 Versions (2). (1) https://www.youtube.com/watch?v=WSQFt1Nruns (2) https://twitter.com/JonasDichelle/status/1167526373449195527 **Exact steps for others to reproduce the error** Switch bottom panel to Shader Editor Switch to Eevee rendered view (already takes time) Change any Value in the Node tree [mandelbulb (1).blend](https://archive.blender.org/developer/F7711840/mandelbulb__1_.blend)

Simeon Wallrath commented

2019-08-31 13:24:40 +02:00

Added subscriber: @waldo-4

Simeon Wallrath changed title from ~~DIsimprovement in calculating math notes (Fractals)~~ to DIsimprovement in calculating math nodes (Fractals)

2019-08-31 13:24:50 +02:00

Brecht Van Lommel commented

2019-10-03 00:55:34 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-10-03 00:55:34 +02:00

Please test if this is still an issue in the latest builds, this may have been fixed along with #70325 (sudden significant performance drop with Eevee and parallax node tree ).

Simeon Wallrath commented

2019-10-03 13:30:50 +02:00

tested on: version: 2.81 (sub 13), branch: master, commit date: 2019-10-02 21:39, hash: 93e8c962fc

The performance is much better now. It's not realtime and Blender freezes for short periods while rendering, but this might be due to the complicated Volume calculations.

tested on: version: 2.81 (sub 13), branch: master, commit date: 2019-10-02 21:39, hash: `93e8c962fc` The performance is much better now. It's not realtime and Blender freezes for short periods while rendering, but this might be due to the complicated Volume calculations.

Brecht Van Lommel commented

2019-10-03 13:39:13 +02:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-10-03 13:39:13 +02:00

Brecht Van Lommel self-assigned this 2019-10-03 13:39:13 +02:00

Brecht Van Lommel commented

2019-10-03 13:39:13 +02:00

Yes, rendering this kind of thing is slow and can stress the GPU a lot, would not consider that a bug.

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DIsimprovement in calculating math nodes (Fractals) #69353