NZSL 1.1 example

[nzsl_version("1.1")]
module;

import VertOut, VertexShader from Engine.FullscreenVertex;

option HasTexture: bool; //< a compilation constant set by the application

[layout(std140)]
struct Parameters
{
    colorMultiplier: vec4[f32]
}

external
{
    [binding(0)] params: uniform[Parameters],
    [cond(HasTexture), binding(1)] texture: sampler2D[f32]
}

struct FragOut
{
    [location(0)] color: vec4[f32]
}

[entry(frag)]
fn main(input: VertOut) -> FragOut
{
    let output: FragOut;
    output.color = params.colorMultiplier;
    const if (HasTexture)
        output.color.rgb *= texture.Sample(input.uv).rgb;

    return output;
}