We are trying to compressed our textures suing batch files babylon provide and pvrtextool but generated compressed textures are too dark as gamma space is being removed. Here is the playground link with Linear-RGB: https://www.babylonjs-playground.com/#5FLDS#13 So according to docs, we should be c…

Welcome aboard! If your albedo texture is in linear space, you should instruct the system because by default it expects this texture to be in gamma space. Simply do newMat.baseTexture.gammaSpace = false to tell the texture is in linear space. That way, your first PG will produce the same result tha…

Hi, Thanks for reply and detailed explanation. That certainly helps with basecolor texture but we are still seeing irregularities with metallic/roughness and normal textures. This is the result without using compression textures and its a same results we are seeing inside substance designer : http…

Yes, roughness and normal maps should be in linear space. However, I don’t know substance, so can’t help in this matter. Have you tried ktx2 instead of ktx, to see if there’s a difference between both?

No, haven’t tried that as it still in experimental stage. I tried exporting the greyscale 127,127,127 from photoshop and tried to compressed that but pvrtextool is converting those values to 54,54,54 so whatever format I create the texture in, its always converting those values. I also tried bringin…

The KTX2 loader is not in experimental stage anymore in Babylon, it’s a new feature of the 4.2 release. [image] shantu: Is there a setting inside pvrtextool that can keep those values same ? I don’t know the tool but I have just downloaded it: have you tried the Edit => Encode page to encode…

So as ktx2 fixed the issue regarding non-color textures mentioned in this post : glTF Extensions in Babylon.js. The mission for Babylon.js is to create… | by Babylon.js | Medium Yes, I did tried both Edit-Encode and CLI tool to generate but got the same results. Thanks again for figuring out this …

Hi, Want to clarify couple of things regarding ktx2 format. So is ktx2 format same as .basis format ? Is there a tutorial or documentation from where i can create ktx2 format ? Is ktx2 supported on all platform? Thanks,

KTX Compressed textures too dark(no gamma)

Questions

Evgeni_Popov October 29, 2020, 3:39pm 9

Here’s a detailed explanation of KTX2 from @bghgary: Basis loader doesn't correctly load alpha channel texture on Android

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KTX Compressed textures too dark(no gamma)

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