[vmsp]

There's an accompanying blog post at https://zserge.com/posts/fenster/

This author has some pretty cool stuff, like a tiny alternative to Firebase https://zserge.com/posts/pennybase/

[unwind]

There is at least two bugs in the blog post, here:

Next simple task would be to fill the complete framebuffer with a solid colour:

    memset(f->buf, rgb, f->width*f->height*sizeoof(uint32_t));

The first is the obvious typo around `sizeof`, which I didn't even see at first (edit: this).

The second is that code will only work for 8-bit colors, i.e. only the 8 (technically CHAR_BIT, "a byte") least-significant bits of `rgb` will be used. This is a quirk of the `memset()` standard C function, which has the prototype:

    void *memset(void s[.n], int c, size_t n);

but then the man page [1] says:

The memset() function fills the first n bytes of the memory area pointed to by s with the constant byte c.

[1]: https://man7.org/linux/man-pages/man3/memset.3.html

[naruhodo]

It will fill the screen with any of 256 shades of grey, for which r == g == b.

[darccio]

Neato! It's nice to find zserge around. He built upon the idea of my static site generator Zas [0] to create his own zs [1][2] a few years ago. I think he's still using it :)

[0]: https://github.com/darccio/zas

[1]: https://github.com/zserge/zs

[2]: https://zserge.com/posts/new-site-generator2/