flake-engine 0.1.0

Immediate-mode game framework built on wgpu + winit
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@group(0) @binding(0) var src: texture_2d<f32>;
@group(0) @binding(1) var smp: sampler;

struct VsOut { @builtin(position) pos: vec4<f32>, @location(0) uv: vec2<f32> };

@vertex
fn vs(@builtin(vertex_index) i: u32) -> VsOut {
    // fullscreen triangle
    let p = vec2<f32>(f32((i << 1u) & 2u), f32(i & 2u));
    var o: VsOut;
    o.pos = vec4(p * 2.0 - 1.0, 0.0, 1.0);
    o.uv = vec2(p.x, 1.0 - p.y);
    return o;
}

@fragment
fn fs(in: VsOut) -> @location(0) vec4<f32> {
    return textureSample(src, smp, in.uv);
}