[nzsl_version("1.0")]
module;

import Engine.ViewerData;

external
{
	[binding(0)] viewerData: uniform[ViewerData],
	[binding(1)] skybox: samplerCube[f32]
}

struct VertOut
{
    [location(0)] uvw: vec3[f32],
    [builtin(position)] position: vec4[f32]
}

struct FragOut
{
    [location(0)] color: vec4[f32],
    [builtin(fragdepth)] depth: f32
}

[entry(frag)]
[depth_write(greater)]
fn main(input: VertOut) -> FragOut
{
    let output: FragOut;
    output.color = skybox.Sample(input.uvw);
    output.depth = 1.0;

    return output;
}

struct VertIn
{
	[location(0)] position: vec3[f32]
}

[entry(vert)]
fn main(input: VertIn) -> VertOut
{
    // Set translation part to zero
    let rotationMat = viewerData.viewMatrix;
    rotationMat[3].xyz = vec3[f32](0.0, 0.0, 0.0);

    let output: VertOut;
    output.position = viewerData.projectionMatrix * rotationMat * vec4[f32](input.position, 1.0);
    output.uvw = input.position.xyz;

    return output;
}