Search Issue Tracker

Fixed in 5.6.0f3



Found in


Issue ID




TextureImporter removes the white Alpha channel

Graphics - General


Steps to reproduce:
1. Open the attached project (
2 Select Assets/Texture.tga (with completely white alpha channel)
3. Observe: Texture has no alpha channel in Unity (but actually it has)

Expected result: If a texture provides an alpha channel and the import setting "Alpha Source = Input Texture Alpha" is set, TextureImporter should use the alpha channel of the texture regardless of its content
Actual result: TextureImporter discards that alpha channel

Reproduced with: 5.3.6p4, 5.4.2p3, 5.5.0b10, 5.5.0b11

Comments (1)

  1. ElicaIWD

    Nov 21, 2018 12:56

    Still present in 2017.3.0f3 & 2018.2.5f1.
    I don't actually "mind" this behaviour, but I would like to know if I can rely on it or not. We need to automatically detect if there is any relative information in the alpha channel, so if Unity does for us, it's a plus, as long as it is not a "bug" that is likely to get fixed in a future version.

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.