Adam Morris

We've gotten feedback about this extension regarding concerns with SPZ's precision in some circumstances. It's been found that in certain cases, the error introduced by the quantization of the quaternion...

> It's difficult (for me) to translate a PSNR value into actual, perceived visual quality. This is a fair point, but PSNR is largely still used in 3D comparisons because...

> The point is: If SPZ (in its current form, or v3 with the two-bytes-rotation) really is that "sweet spot" that covers 95% of all use cases satisfactory, then there...

Both excellent points, @lexaknyazev. This extension may potentially have some small changes soon based on the feedback here: - We're considering breaking out the core "3D Gaussian splatting" portion into...

I took a first pass at splitting out the extension into a base extension and a SPZ extension. It's a rough draft but it should be a solid starting point...

I just made a small change to the SPZ compression extension to (hopefully) simplify the language around inheritance from the base `KHR_gaussian_splatting` extension. @lexaknyazev very interested in any thoughts you...

> I think that the KHR_gaussian_splatting extension should inculde a resolution for https://github.com/KhronosGroup/glTF/issues/2111. I agree. I made a comment over in #2111 about a potential solution. Regarding the `byteOffset`, do...

I've been following what the OpenUSD folks are doing as well as talking with a few of them, and below are some proposed changes that I want to run by...

Pushed some changes to the SPZ extension. Still working on updates to the base extension.

Pushed changes to the base 3DGS extension: - Updated the extension based on feedback. - Included the shape and rendering hints mentioned [in my comment above](https://github.com/KhronosGroup/glTF/pull/2490#issuecomment-3104857643).