This is exactly why I’m confused, I’m not sure why with all effects disabled, and only emissive output from texture, there is any difference at all. I’m pretty sure it should be exact
So if I’m understanding this correctly, you’re saying that Unreal is interpreting linear values to final sRGB incorrectly? And something along the conversion is inaccurate? Sorry, I’m not super knowledgeable in this area. Other than some hacky thing like manual gamma correction in the material itself, do you have any ideas on how to fix it?