sugarloaf 0.2.24

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 
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struct Globals {
    transform: mat4x4<f32>,
}

@group(0) @binding(0) var<uniform> globals: Globals;
@group(0) @binding(1) var font_sampler: sampler;
@group(1) @binding(0) var color_texture: texture_2d<f32>; // RGBA texture for color glyphs
@group(1) @binding(1) var mask_texture: texture_2d<f32>;  // R8 texture for alpha masks

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>,
    @location(3) layers: vec2<i32>,
}

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

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

    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> {
    var out: vec4<f32> = input.f_color;

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

    if input.mask_layer > 0 {
        out = vec4<f32>(out.xyz, input.f_color.a * textureSampleLevel(mask_texture, font_sampler, input.f_uv, 0.0).x);
    }

    return out;
}