bm.loops.layers.color values are different in spreadsheet #92082

New Issue

bar · 2021-10-10T10:05:34+02:00

bar commented

2021-10-10 10:05:34 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.12

Blender Version
Broken: version: 2.93.5, branch: master, commit date: 2021-10-05 12:04, hash: a791bdabd0
Worked: (newest version of Blender that worked as expected)

Short description of error
After storing values in color attribute it appear differently in spreadsheet.

Exact steps for others to reproduce the error
bm.loops.layers.color_bug.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.12 **Blender Version** Broken: version: 2.93.5, branch: master, commit date: 2021-10-05 12:04, hash: `a791bdabd0` Worked: (newest version of Blender that worked as expected) **Short description of error** After storing values in color attribute it appear differently in spreadsheet. ![image.png](https://archive.blender.org/developer/F10929269/image.png) ![image.png](https://archive.blender.org/developer/F10929257/image.png) **Exact steps for others to reproduce the error** [bm.loops.layers.color_bug.blend](https://archive.blender.org/developer/F10929275/bm.loops.layers.color_bug.blend)

bar commented

2021-10-10 10:05:34 +02:00

Added subscriber: @barakooda

Scurest commented

2021-10-10 16:27:04 +02:00

Added subscriber: @scurest

Scurest commented

2021-10-10 16:27:04 +02:00

The spreadsheet is showing the color after sRGB -> linear conversion.

bar commented

2021-10-10 17:12:16 +02:00

I see it also doing the conversion in the shader ...
Why...
;-(

I would add menu parameter with:
Raw
Linear to srgb
Srgb to linear

Please let the user choose.
"Let the sunshine in"

I see it also doing the conversion in the shader ... Why... ;-( I would add menu parameter with: Raw Linear to srgb Srgb to linear Please let the user choose. "Let the sunshine in"

Germano Cavalcante commented

2021-10-11 20:55:41 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-10-11 20:55:41 +02:00

This is due to the same issue described in #91759 (The colors of the vertices do not correspond to the values in which I paint them with vertex paint.).
Vertex Paint paints in RGB linear, but everything else considers it to be sRGB.
It seems that in blender 2.79 this was different and needs to be checked.

This is due to the same issue described in #91759 (The colors of the vertices do not correspond to the values in which I paint them with vertex paint.). Vertex Paint paints in RGB linear, but everything else considers it to be sRGB. It seems that in blender 2.79 this was different and needs to be checked.

Germano Cavalcante commented

2021-10-11 20:55:49 +02:00

Closed as duplicate of #91759

Germano Cavalcante closed this issue

2021-10-11 20:55:49 +02:00

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bm.loops.layers.color values are different in spreadsheet #92082