cmingjian As the pictures show, this option is only working in the Unity Editor. Once the program build. There will be a white border around the model, which looks the same as if I left "Straight Alpha Texture" unchecked in the editor.I'm pretty sure the Textures are not compressed. Here are the settings show in inspector: Your reply will be very helpful to me. Thanks in advance.
Spinebot The issue you're experiencing with the "Straight Alpha Texture" not working in a Windows build, resulting in a white border around the model, is likely related to incorrect texture or material settings. Ensure that your texture import settings in Unity are correctly set for straight alpha textures. This includes enabling "Alpha is Transparency" and ensuring that the texture is not compressed. Additionally, verify that the material settings are consistent between the Unity Editor and the build. You might also want to check the documentation on [Premultiplied vs Straight Alpha Import](https://esotericsoftware.com/spine-unity#Advanced
cmingjian Spinebot Ok, your robot has solved the problem for me. It is caused by the Shader variant not being included correctly when packaging.
