Cubemap to and from cross

[walbourn]

Tool to convert between cross layout images and cubemaps.

• h-strip (height, width *6): posz, posx, negz, negx, posy, negy
• h-strip-xyz (height, width * 6): pox, negx, posy, negy, posz, negz
• h-cross (height * 3, width * 4): negx, posz, posx, negz, posy, negy
• h-cross-flip
• v-cross (height * 4, width * 3): negx, posz, posx, posy, negy, negz
• v-cross-flip

[walbourn]

considering adding this as an option to texassemble

[walbourn]

texassemble now supports h-strip, v-strip, h-cross, and v-cross generation.

[lanyizi]

texassemble now supports h-strip, v-strip, h-cross, and v-cross generation.

Looks like texassemble only supports creating cross from cubemap, not converting h-cross to cubemap?

[walbourn]

Correct. I'm guessing that's a feature request :)

[matyalatte]

Hi, I implemented this feature for my tools.
So, I think I can contribute to the official branch like this.
matyalatte@d085c1d
Can I send PR after adding commands for other layouts?
Or is anyone already working on it?

[walbourn]

You are welcome to submit a PR. I have a side-project to work on a texenvmap tool for generating spherical cubemaps, panoramic cubemaps, parabolic cubemaps, but this is a fine addition to texassemble.

[walbourn]

You'll need to sync with my main branch for my recent additions of h-tee and v-cross-fzh.

[matyalatte]

Thanks for the comments.
I sent the PR (#290).