forestiles/src/shader.wgsl

struct Uniforms {
    camera: vec2f,
    zooms: vec2f
}
@group(0) @binding(0) var<uniform> uniforms : Uniforms;

struct VertexOutput {
    @location(0) color: vec4f,
    @builtin(position) pos: vec4f
}

@vertex
fn vs_main(
    @location(0) pos: vec2f,
    @location(1) color: vec4f
) -> VertexOutput {
    var out: VertexOutput;
    out.color = color;
    out.pos = vec4f((pos - uniforms.camera) * uniforms.zooms, 0, 1);
    return out;
}

@fragment
fn fs_main(v: VertexOutput) -> @location(0) vec4f {
    return v.color;
}