ferrum-wgpu 0.1.0

3D rendering engine library
Documentation 
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// Debug mesh rendered at the light's position.
// Based on Learn WGPU's lighting tutorial:
//   https://sotrh.github.io/learn-wgpu/intermediate/tutorial10-lighting/

@group(0) @binding(0)
var<uniform> camera: Camera;
@group(1) @binding(0)
var<uniform> light: Light;
@group(2) @binding(0)
var t_diffuse: texture_2d<f32>;
@group(2) @binding(1)
var s_diffuse: sampler;

struct Camera {
    view_pos: vec4<f32>,
    view: mat4x4<f32>,
    view_proj: mat4x4<f32>,
    inv_proj: mat4x4<f32>,
    inv_view: mat4x4<f32>,
}

struct Light {
    position: vec3<f32>,
    color: vec3<f32>,
}

struct VertexInput {
    @location(0) position: vec3<f32>,
    @location(1) tex_coords: vec2<f32>,
};

struct VertexOutput {
    @builtin(position) clip_position: vec4<f32>,
    @location(0) color: vec3<f32>,
    @location(1) tex_coords: vec2<f32>,
}

@vertex
fn vs_main(model: VertexInput) -> VertexOutput {
    let scale = 3.0;
    var out: VertexOutput;
    out.clip_position = camera.view_proj * vec4<f32>(model.position * scale + light.position, 1.0);
    out.color = light.color;
    out.tex_coords = model.tex_coords;
    return out;
}

@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
    let tex = textureSample(t_diffuse, s_diffuse, in.tex_coords);
    return vec4<f32>(tex.rgb * in.color * 2.0, 1.0);
}