Why is there a sRGBToLinear function?

[random-yang]

I tried to remove the call to sRGBToLinear and change the color format to bgra8Unorm, and I got a near-approximate rendering result.
I just can't understand, is the color in ply represented in srgb space?

[kemchenj]

Oh, this was derived from #1 by me, cause the default colorFormat was rgba8Unorm_srgb if I remember correctly.

The color in ply are represented in linear colorspace, so at that time I just add the conversion to fix the colorspace mismatch without much thinking.

And after several months, I do noticed the best way to do this was exactly what you described here, just change the colorFormat to rgba8Unorm or any other linear colorspace (like the bgra8Unorm you pick). But I had moved on to the next project and forgot all about this.

Thanks for bringing this up, I truly understand why you got confused, and I think you could make a pr to "fix" this...

[random-yang]

Thanks for your reply. Before submitting a PR, I want to delve deeper into the color space of metal.