vyre 0.4.0

GPU compute intermediate representation with a standard operation library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59

struct UrlPercentDecodeParams {
    input_len: u32,
    output_capacity: u32,
    reserved0: u32,
    reserved1: u32,
}

@group(0) @binding(0) var<uniform> params: UrlPercentDecodeParams;
@group(0) @binding(1) var<storage, read> input_words: array<u32>;
@group(0) @binding(2) var<storage, read_write> output_words: array<u32>;
@group(0) @binding(3) var<storage, read_write> status: array<u32>;

@compute @workgroup_size(1, 1, 1)
fn decode_url_percent(@builtin(global_invocation_id) id: vec3<u32>) {
    if (id.x != 0u) {
        return;
    }
    status[0] = 0u;
    status[1] = 0u;
    var input = 0u;
    var out = 0u;
    loop {
        if (input >= params.input_len) {
            break;
        }
        if (out >= params.output_capacity) {
            status[0] = 5u;
            return;
        }
        let byte = vyre_packed_byte(&input_words, input);
        if (byte != 37u) {
            vyre_store_packed_byte(&output_words, out, byte);
            input = input + 1u;
            out = out + 1u;
            continue;
        }
        if (input + 2u >= params.input_len) {
            status[0] = 1u;
            status[1] = input;
            return;
        }
        let hi = vyre_hex_value(vyre_packed_byte(&input_words, input + 1u));
        let lo = vyre_hex_value(vyre_packed_byte(&input_words, input + 2u));
        if (hi == 0xffffffffu) {
            status[0] = 2u;
            status[1] = input + 1u;
            return;
        }
        if (lo == 0xffffffffu) {
            status[0] = 2u;
            status[1] = input + 2u;
            return;
        }
        vyre_store_packed_byte(&output_words, out, (hi << 4u) | lo);
        input = input + 3u;
        out = out + 1u;
    }
    status[1] = out;
}