Baking time on diffuse - color only is highly impacted by vertex count on other objects #88648

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Benoit Alexis · 2021-05-28T13:00:11+02:00

Benoit Alexis commented

2021-05-28 13:00:11 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: 02948a2cab
Worked: (newest version of Blender that worked as expected)

Short description of error
When trying to bake the diffuse only of an object, with color only (as to get an albedo map), the render time is very dependent on the surrounding geometry, even though it is not supposed to impact performances.

Exact steps for others to reproduce the error
The scene is made of two rocks, the one called "ToBake", is to be baked, the other one has a lot of subdivision surfaces (turned down to 0 in viewport for ease of use, turned up to 5 in render for exemple).
The baking process takes a very long time with this highly subdivided rock (Usually ends up crashing if I press cancel by the way). If you disable it from render and viewport, the bake is almost instantaneous.
This looks like a possible optimization for albedo only baking in large scenes. Volcanic Bake.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 **Blender Version** Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: `02948a2cab` Worked: (newest version of Blender that worked as expected) **Short description of error** When trying to bake the diffuse only of an object, with color only (as to get an albedo map), the render time is very dependent on the surrounding geometry, even though it is not supposed to impact performances. **Exact steps for others to reproduce the error** The scene is made of two rocks, the one called "ToBake", is to be baked, the other one has a lot of subdivision surfaces (turned down to 0 in viewport for ease of use, turned up to 5 in render for exemple). The baking process takes a very long time with this highly subdivided rock (Usually ends up crashing if I press cancel by the way). If you disable it from render and viewport, the bake is almost instantaneous. This looks like a possible optimization for albedo only baking in large scenes. [Volcanic Bake.blend](https://archive.blender.org/developer/F10146408/Volcanic_Bake.blend)

Benoit Alexis commented

2021-05-28 13:00:11 +02:00

Added subscriber: @BenoitAlexis

Philipp Oeser commented

2021-07-13 22:34:29 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-07-13 22:34:29 +02:00

Hi and thx for the report (sorry it took a while to answer)!

This is essentially the same issue as #88011 (Baking emissive still calculates all scene instead 1 object).
Could be optimized, but was classified as not a bug. Will merge these reoprts.

Hi and thx for the report (sorry it took a while to answer)! This is essentially the same issue as #88011 (Baking emissive still calculates all scene instead 1 object). Could be optimized, but was classified as not a bug. Will merge these reoprts.

Philipp Oeser commented

2021-07-13 22:34:46 +02:00

Closed as duplicate of #88011

Philipp Oeser closed this issue

2021-07-13 22:34:46 +02:00

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Baking time on diffuse - color only is highly impacted by vertex count on other objects #88648