I wrote a zig macro. - Githubissues

import 'ffi'

macro zig = (code)->
    import 'md5'
    dir, fn = 'embed/', md5.sumhexa(code) -- without ext (.zig/.h/.so)
    with io.open(dir..fn..'.zig', 'w')
        \write(code)
        \close()
    cmd = code\match('^//#(.-)\n') or 'zig build-lib -dynamic -O ReleaseSmall' -- -fstrip -fsingle-threaded'
    -- os.execute(command or "pushd &>/dev/null #{dir} && #{cmd} #{fn}.zig -femit-h -target x86_64-windows-gnu && popd &>/dev/null")
    os.execute(command or "pushd &>/dev/null #{dir} && #{cmd} #{fn}.zig -femit-h && popd &>/dev/null")
    _h = io.open(dir..fn..'.h')\read('*a')\gsub('#include "zig.h"\n', '')\gsub('zig_extern ', '')--\gsub('\n','')
    "rawget({ffi.cdef\'#{_h}\', ffi.load\'#{dir}lib#{fn}.so\'}, 2)"

fib = $zig[[
export fn fib(n: i32) i32 {
    if (n == 0 or n == 1) return n;
    return fib(n - 1) + fib(n - 2);
}
]]

print fib.fib(10)
print 250 + 10
print 250 |>$zig[[export fn u8addwrap(a: u8, b:u8) u8 {return a +% b;}]].u8addwrap 10
print 250 |>$zig[[export fn u8addsatu(a: u8, b:u8) u8 {return a +| b;}]].u8addsatu 10

brighten = $zig[[
// cite: https://zenn.dev/kounoike/articles/20230120-zig-imgprocessing-simd
export fn brightenSIMD(image: [*]u8, len: usize) void {
    var idx: usize = 0;
    const add_vec = @Vector(4, u8){ 10, 10, 10, 0 };
    while (idx < len) : (idx += 4) {
        const image_vec = @Vector(4, u8){ image[idx + 0], image[idx + 1], image[idx + 2], image[idx + 3] };
        const result_vec = image_vec +| add_vec;
        image[idx + 0] = result_vec[0];
        image[idx + 1] = result_vec[1];
        image[idx + 2] = result_vec[2];
        image[idx + 3] = result_vec[3]; // ここを消すと遅くなる
    }
}
]]

image = string.char unpack [math.random(0, 255) for _ = 1, 1200]
print string.byte image, 1, 10
for _=1,9
    brighten.brightenSIMD(ffi.cast('uint8_t *', image), #image)
    print string.byte image, 1, 10

qoi = $zig[[
//# cp -f ../qoi.h qoi.h && zig build-lib -dynamic -O ReleaseSmall -I. -I/usr/include
const qoi = @cImport({@cDefine("QOI_IMPLEMENTATION", ""); @cInclude("qoi.h");});
export fn read(filename: [*:0]const u8, pwidth: *u32, pheight: *u32) ?*anyopaque {
    var desc = qoi.qoi_desc{.width = 0, .height = 0, .channels = 0, .colorspace = 0};
    var result = qoi.qoi_read(filename, &desc, 4);
    pwidth.* = desc.width;
    pheight.* = desc.height;
    return result;
    //defer free(data);
}
]]

pwidth, pheight = ffi.new('uint32_t[1]'), ffi.new('uint32_t[1]')
pixels = qoi.read('dice.qoi', pwidth, pheight)
-- gr.newImage(love.image.newImageData(pwidth[0], pheight[0], 'rgba8', ffi.string(pixels, pwidth[0] * pheight[0] * 4)))
print pwidth[0], pheight[0]
pigpigyyy / Yuescript

I wrote a zig macro. #155
