aetna-core 0.3.4

Aetna — backend-agnostic UI library core
Documentation 
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// stock::vector — tessellated SVG/vector geometry. CPU-side SVG assets
// are normalised into Aetna vector IR and tessellated into triangles;
// silhouette AA is delegated to the host's MSAA target, not done in
// the shader.

struct FrameUniforms {
    viewport: vec2<f32>,
    time: f32,
    scale_factor: f32,
};

@group(0) @binding(0) var<uniform> frame: FrameUniforms;

struct VertexInput {
    @location(0) pos_px: vec2<f32>,
    @location(1) local: vec2<f32>,
    @location(2) color: vec4<f32>,
    @location(3) data: vec4<f32>,
};

struct VertexOutput {
    @builtin(position) clip_pos: vec4<f32>,
    @location(0) color: vec4<f32>,
    @location(1) local: vec2<f32>,
    @location(2) data: vec4<f32>,
};

@vertex
fn vs_main(in: VertexInput) -> VertexOutput {
    let clip = vec4<f32>(
        in.pos_px.x / frame.viewport.x * 2.0 - 1.0,
        1.0 - in.pos_px.y / frame.viewport.y * 2.0,
        0.0,
        1.0,
    );

    var out: VertexOutput;
    out.clip_pos = clip;
    out.color = in.color;
    out.local = in.local;
    out.data = in.data;
    return out;
}

@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
    return vec4<f32>(in.color.rgb * in.color.a, in.color.a);
}