Improve texture builder APIs

[sdroege]

CC @rmader

[bilelmoussaoui]

this will probably break the msvc build but let us hope not

[sdroege]

It's broken completely anyway 🙃

[bilelmoussaoui]

Please rebase, that should fix the CI. We can merge afterwards

[sdroege]

Windows things still don't pass but rebased otherwise :)

[bilelmoussaoui]

Windows things still don't pass but rebased otherwise :)

it does pass on main, it is caused by

Error:   --> gdk4\src\dmabuf_texture_builder.rs:53:53
   |
53 |     pub fn fd(&self, plane: u32) -> Option<std::os::fd::BorrowedFd<'_>> {
   |                                                     ^^ could not find `fd` in `os`

and other errors ;-)

[bilelmoussaoui]

The whole DMABufTextureBuilder should be gated by cfg(linux) anyways

[sdroege]

Oh indeed, sorry

[sdroege]

Needs gtk-rs/gir#1652