[SOLVED] Weird white tint when a custom shader is assigned to a MeshInstance's material override.

Juxxec

Greetings,

I am having some problems with lighting in a project I am working on. I created a shader for an effect I wanted to achieve. For some reason when I use my shader I get a whitish tint to the colors, even if I assign a color directly to the Albedo property. And this happens only when I am using a ShaderMaterial with any shader. If I use the spatial material, I see no such tinting.

This is how it is supposed to look: Working; There is no ting; Using SpatialMaterial

This is how it looks when I do it through a shader. As you can see it is washed out as if bleached.

I tried reducing the Energy of the ambient light in the global environment resource, but that only made the image darker. .

It is still washed out compared to the SpatialMaterial:

I also tried adding a render_mode unshaded; to the shader, but again the bleaching is there. The only thing that did was to make the shader to ignore the ambient light energy.

Here is a project that shows the issue: https://drive.google.com/file/d/1f_ha-xTnsXLT7xLM9Aq5GXUR-EOYwl9a/view?usp=sharing. I am using Godot v3.1. stable.

Does anybody know why this is happening?

TwistedTwigleg

I am not totally sure why, but in Godot you need to mark texture(s) with texture_albedo so Godot formats the color correctly. I think it has something to do with converting the code to OpenGL.

Changing uniform sampler2D _texture; to uniform sampler2D _texture : hint_albedo; fixed the washed out colors when I tested the project.

Personally, I have found that looking at the shader code for SpatialMaterials to be helpful when writing custom shaders, as then you have a working PBR material to use as reference. If you select convert to shader material from the drop down beside the material resource, then Godot will show the shader code with the same parameters as the SpatialMaterial.

Hopefully this helps! (Side note: Welcome to the forums)

Megalomaniak

it has to do with color management, certain maps are the type of data that don't need CM, however certain maps do.

Juxxec

@TwistedTwigleg said: I am not totally sure why, but in Godot you need to mark texture(s) with texture_albedo so Godot formats the color correctly. I think it has something to do with converting the code to OpenGL.

Changing uniform sampler2D _texture; to uniform sampler2D _texture : hint_albedo; fixed the washed out colors when I tested the project.

Personally, I have found that looking at the shader code for SpatialMaterials to be helpful when writing custom shaders, as then you have a working PBR material to use as reference. If you select convert to shader material from the drop down beside the material resource, then Godot will show the shader code with the same parameters as the SpatialMaterial.

Hopefully this helps! (Side note: Welcome to the forums)

Hey thank you Twisted, that really worked.

Thanks for the welcome.

Juxxec

@Megalomaniak said: it has to do with color management, certain maps are the type of data that don't need CM, however certain maps do.

I see, thank you for the information.

Megalomaniak

Changed the topic type from a discussion to a question and set @TwistedTwigleg reply as answer.