Separating metallic and roughness texture at PBRMaterial

[chriseibel]

Hello everyone.

First of all I would like to say thank you, the posts in this forum often helped me. You guys have a great community!

Now to my Problem. I need to create a PBRMaterial out of 4 different textures. There is a BumpTexture, an AlbedoTexture, a Metallic- AND a RoughnessTexture but I only found a way to create this by using a combination of MetallicRoughness.

Actually I am using the code below:

let pbr = new BABYLON.PBRMaterial("pbr", this._scene);

 

//Create bumpTexture and flip normal. (DirectX <-> OpenGL)

pbr.bumpTexture = new BABYLON.Texture("materials/" +filePath +"/02_Texturepack/" +materialName+"Normal.png", this._scene);

pbr.bumpTexture.level = -1;

 

//Create albedoTexture

pbr.albedoTexture = new BABYLON.Texture("materials/" +filePath +"/02_Texturepack/" +materialName+"BaseColor.png", this._scene);

 

//Create reflectionTexture

pbr.reflectionTexture = BABYLON.CubeTexture.CreateFromPrefilteredData("textures/environment.dds", this._scene);

 

//Create metallicRoughnessTexture

pbr.metallicTexture = new BABYLON.Texture("materials/" +filePath +"/02_Texturepack/" +materialName+"MetallicRoughness.png", this._scene);

 

//Set metallic and roughness to 1 to use it from the metallicRoughnessTexture

pbr.metallic = 1.0;

pbr.roughness = 1.0;

 

//set channel with metallic and roughness

pbr.useRoughnessFromMetallicTextureAlpha = false;

pbr.useRoughnessFromMetallicTextureGreen = true;

pbr.useMetallnessFromMetallicTextureBlue = true;

//set new material to mesh

this._activeMesh.material = pbr;

Is there any possibility to seperate the metallic and roughness informations in two different images?

At the moment I am editing the metallic texture with photoshop and put the information of roughness into the green channel and the metallic information into the blue channel which works pretty well.

unfortunaly thats not a solution, because customer have thousonds of texturepacks I need to show in Babylon without merging metallic and roughness.

 

Greetings, Chris.

[Sebavan]

Could you place your roughness/glossiness texture in the microSurfaceTexture property of the pbrMaterial.

It is here to answer your use case. The value will be fetched from the r channel.

[chriseibel]

10 hours ago, Sebavan said:

Could you place your roughness/glossiness texture in the microSurfaceTexture property of the pbrMaterial

Thank you Sebavan, looks like I skipped this function in the documentation...

That works for me.

Problem solved.

 

[V!nc3r]

(and just a little tip: instead of setting bump level to -1, I think you can play with invertNormalMapY / X)