# framebuffer graphics
This is my stupid attempt at drawing directly to the Linux framebuffer.

The framebuffer device is hard-coded to `/dev/fb0` at the moment because I'm lazy and it's half-past 3 in the morning.

Look, if anything is broken, just know I've only tested this on my Raspberry Pi 4, so feel free to add an issue or something; Or even better: fix it and send a PR.

## What does this do?

Good question.

## How do I compile it?
`gcc src/bitmap.c src/charmap.c src/gfx.c src/draw.c -Iinclude -o draw` should do the trick. Feel free to add optimization flags or something...

Also do `gcc src/bitmap.c src/bmconv.c -Iinclude -o bmconv` for the bitmap converter.

## What is bmconv?
So... I made a bitmap format for creating characters because I can't be bothered to look up existing formats. It only accepts 1's or 0's, but that's kind of a mess to write as bits in a file, so I just made a human-readable version of the format (with the extension `.rbm`). Bitmaps must be rectangular delimited by newline characters after each row (look at the existing files in `res`). To convert these human-readable files to a more compressed format, you use `bmconv c {input file} {output file}`. To decompress compressed files, run `bmconv d {input file} {output file}`.

Oh right, the bitmap format uses the `.bm` extension. If there are any issues, `bitmap.c` natively supports both the compressed and human-readable formats, so there's an upshot, I guess.

## Why??
I don't know. I just want to sleep

## Features?
* It doesn't crash (I think)
* Automatic character mapping from a metadata file
* Double-buffered frames
* Character transparency
* Bitmaps are actual bits ;)

## TODO
* Obviously fix the language in this README. This is waaaaaaay too informal
* Take a nap
* Proper bounds-detection for things being drawn (instead of just crashing or wrapping)
* Check for memory leaks
* Scale-able characters
* More characters
* Full-colour characters
* Input events system
* Support for triangles :)
* Rotation for elements on-screen
* Un-hard-code the framebuffer device
* ???
* Profit