Improve Automatic Material Previews for Metallic Materials #89984

New Issue

Julian Eisel · 2021-07-20T12:58:21+02:00

Julian Eisel commented

2021-07-20 12:58:21 +02:00

The automatic previews generated when marking a material as asset don't work well with rather reflective/metallic materials. That is because they reflect a gray background, so of course they have a grey-ish look that doesn't preview the material well.

Jeroen Bakker was assigned by Julian Eisel

2021-07-20 12:58:21 +02:00

Julian Eisel commented

2021-07-20 12:58:21 +02:00

Added subscriber: @JulianEisel

Jeroen Bakker commented

2021-07-20 16:01:27 +02:00

We should change the shader of the background to let the camera rays passthrough. This should be controlled by the film transparency.

Jeroen Bakker commented

2021-07-20 16:11:57 +02:00

preview_prepare_scene is the function that handles the scene creation.

set_preview_visibilty will change the floor to be removed from rendering.
In stead of this we should set a material property so it won't be visible for camera rays.

Perhaps use with reflection maps for eevee as the path info isn't fully supported.

`preview_prepare_scene` is the function that handles the scene creation. `set_preview_visibilty` will change the floor to be removed from rendering. In stead of this we should set a material property so it won't be visible for camera rays. Perhaps use with reflection maps for eevee as the path info isn't fully supported.

Jeroen Bakker commented

2021-07-21 09:30:00 +02:00

Icon Material rendering

Engine	World	Floor Visibility	Floor Material
Cycles	"World"	Visible	"FloorReflectiveRaysOnly"
Eevee	"WorldFloor"	Not Visible

Other cases should reset the floor material to "Floor".

I chose to add a different material so we don't need to utilize cycles ray visibility settings.
For cycles I don't want to use the "WorldSDFFloor" as it projects the floor into infinity and isn't physically correct.

Jeroen Bakker commented

2021-07-21 12:26:02 +02:00

Still needs some tweaks.

![image.png](https://archive.blender.org/developer/F10231616/image.png) Still needs some tweaks.

blender-admin commented

2021-08-11 16:59:09 +02:00

This issue was referenced by bb487bc2bc

This issue was referenced by bb487bc2bc82c02922722efb3ca1d2570d907ad9

Jeroen Bakker commented

2021-08-11 17:03:59 +02:00

Changed status from 'Needs Triage' to: 'Resolved'

Jeroen Bakker closed this issue

2021-08-11 17:03:59 +02:00

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Improve Automatic Material Previews for Metallic Materials #89984