sugarloaf 0.1.6

Sugarloaf is Rio rendering engine, designed to be multiplatform. It is based on WebGPU, Rust library for Desktops and WebAssembly for Web (JavaScript). This project is created and maintained for Rio terminal purposes but feel free to use it.
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
60
61
62
63
64

struct Globals {
    transform: mat4x4<f32>,
}

@group(0) @binding(0) var<uniform> globals: Globals;
@group(0) @binding(1) var font_color_tex: texture_2d<f32>;
@group(0) @binding(2) var font_mask_tex: texture_2d<f32>;
@group(0) @binding(3) var font_sampler: sampler;

struct VertexInput {
    @builtin(vertex_index) vertex_index: u32,
    @location(0) v_pos: vec4<f32>,
    @location(1) v_color: vec4<f32>,
    @location(2) v_uv: vec2<f32>,
}

struct VertexOutput {
    @builtin(position) position: vec4<f32>,
    @location(0) f_color: vec4<f32>,
    @location(1) f_uv: vec2<f32>,
    @location(2) f_use_tex: i32,
    @location(3) f_use_mask: i32,
}

@vertex
fn vs_main(input: VertexInput) -> VertexOutput {
    var out: VertexOutput;
    out.f_color = input.v_color;
    out.f_uv = input.v_uv;

    var use_tex: i32 = 0;
    var use_mask: i32 = 0;

    var flags: i32 = i32(input.v_pos.w);
    if (flags == 1) {
        use_tex = 1;
    } else if (flags == 2) {
        use_mask = 1;
    } else if (flags == 3) {
        use_tex = 1;
        use_mask = 1;
    }

    out.f_use_tex = use_tex;
    out.f_use_mask = use_mask;
    out.position = globals.transform * vec4<f32>(input.v_pos.xy, 0.0, 1.0);
    return out;
}

@fragment
fn fs_main(input: VertexOutput) -> @location(0) vec4<f32> {
    // return vec4<f32>(input.f_color.xyz, 1.0);
    var out: vec4<f32> = input.f_color;

    if input.f_use_tex > 0 {
        out = textureSampleLevel(font_color_tex, font_sampler, input.f_uv, 0.0);
    }

    if input.f_use_mask > 0 {
        out = vec4<f32>(out.xyz, textureSampleLevel(font_mask_tex, font_sampler, input.f_uv, 0.0).x);
    }

    return out;
}