Array uniforms should respect SG_UNIFORMLAYOUT_NATIVE

[nmr8acme]

I had a little trouble recently upgrading from sokol_gfx @ bfc41f3 to aaf2c33, as the UB layouts introduced no longer match the expected size and layout for a native GLES2 shader when a float array is used (or any other sub-16-byte primitive array.) IIUC there is just an unhandled case, so I tried to handle it.

[floooh]

Ooops, yeah, looks like I missed that. I'll try to come up with a GL sample which doesn't use sokol-shdc to test this case.

Will look into this over the weekend.

[floooh]

Ok merged, many thanks!

I've written a new GLFW sample/test (not committed yet) which tests float, vec2 and vec3 uniform arrays (not pushed yet). Before your PR this would already fail in the sokol-gfx validation layer (wrong uniform block size).

[floooh]

PS: I merged the PR with the "command line" procedure, not by pressing the PR Merge button.

Github seems to be a bit confused (maybe because your git handle "nathan" is different from the Github account "nmr8acme") and doesn't list you in the Contributors tab: https://github.com/floooh/sokol/graphs/contributors

Your commit is properly showing up in the history though (but note how your name isn't clickable):

https://github.com/floooh/sokol/commits/master

Just in case you're wondering what's up with that ;)

[floooh]

Link to sample: https://github.com/floooh/sokol-samples/blob/master/glfw/uniformarrays-glfw.c

[floooh]

And Changelog update (15-Jan-2022): https://github.com/floooh/sokol/blob/master/CHANGELOG.md

[nmr8acme]

Thanks :)