blitter

该库在原始32位帧缓冲区上执行各种位块传输和绘图操作，无论编码方式如何。

• 位图位块传输/裁剪
• 传输位图的一部分（例如，位图字体）
• 带有颜色或位掩码的传输
• 像素绘图
• 可选PNG解码功能

示例

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

// For example, you can push all the bitmaps in a single vec to give ownership of all bitmaps
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();
}

您还可以通过在'examples'目录中使用minifb库查看和运行一些（非常基础的）示例

cargo run --example demo --features="png-decode"
cargo run --example minifb --features="png-decode"
cargo run --example square

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许可证：MIT