blitter

This library performs various blitting and drawing operations on a raw 32 bits framebuffer, whatever the encoding. Early development.

Example:

// Framebuffer initialization
let mut pixels: Vec<u32> = vec!(0; WIDTH * HEIGHT);
let mut fb = Framebuffer {width: WIDTH, height: HEIGHT, pixels: &mut pixels};

// User bitmaps initialization
let mut bitmaps = Vec::new();
bitmaps.push(Bitmap {w: 10, h: 10, x: 0, y: 0, pixels: &image::PIXELS});

while *display loop with some display library* {
    blitter_test(&mut fb, &mut bitmaps);
    *your display lib display update function with buffer &fb.pixels*
}

// For testing : moves a 10x10 square and prints a 4x4 pixel at the center of the screen
fn blitter_test(mut fb: &mut Framebuffer, bitmaps: &mut Vec<Bitmap>) {
    fb.clear_area(640, 10, 0, 0, 0).unwrap();
    bitmaps[0].blit(&mut fb).unwrap();   //copies a bitmap to the framebuffer
    if bitmaps[0].x < WIDTH - 10 { bitmaps[0].x = bitmaps[0].x+3; } else { fb.clear(0); }
    fb.draw_fatpixel(320,240,4,0xffffffff).unwrap();
}

You can also view and run a (very basic) example using the minifb library in the 'examples' directory:

cargo run --example minifb

License: GPL-3.0