Load the model I found on the Internet to report an error.

[jiaxianghao]

The assert in the toSrgbInternalFormat is called with parameter format of value 3.

[matthew-reid]

In old versions of OpenGL, the internal format value was treated directly as number of color components: 1, 2, 3, or 4.
I assume the asset you're trying to load is using this old technique. I've just added support for it in this commit on the v1.5 branch. You'll have to clone it from git as there's no Skybolt release version for it.

[jiaxianghao]

I'll try it later.

[jiaxianghao]

Ok, The problem has been solved

[jiaxianghao]

I found the toSrgbInternalFormat function are same in v1.3.3 and v1.5.0.In v1.5.0,some model still loading failed.

[jiaxianghao]

I am using the v1.5.0 tag.

[jiaxianghao]

I modified the toSrgbInternal function to return GL_SRGB8 when format is 3, and then the model is loaded normally. I don't know if it's reasonable for me to do so.