monstertruck-render 0.2.0

Shape and polygon mesh visualization
Documentation 
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struct VertexInput {
    @location(0) position: vec3<f32>,
    @location(1) uv: vec2<f32>,
    @location(2) normal: vec3<f32>, 
}

struct Camera {
    camera_matrix: mat4x4<f32>,
    projection: mat4x4<f32>,
}

@group(0)
@binding(0)
var<uniform> camera: Camera;

struct Lights {
    lights: array<Light, 255>,
}

@group(0)
@binding(1)
var<uniform> lights: Lights;

struct SceneInfo {
    bk_color: vec4<f32>,
    resolution: vec2<u32>,
    time: f32,
    nlights: u32,
}

@group(0)
@binding(2)
var<uniform> info: SceneInfo;

struct ModelMatrix {
    model_matrix: mat4x4<f32>,
}

@group(1)
@binding(0)
var<uniform> model_matrix: ModelMatrix;

struct ModelMaterial {
    material: Material,
}

@group(1)
@binding(1)
var<uniform> material: ModelMaterial;

@group(1)
@binding(2)
var r_color: texture_2d<f32>;

@group(1)
@binding(3)
var r_sampler: sampler;

struct VertexOutput {
    @builtin(position) gl_position: vec4<f32>,
    @location(0) position: vec3<f32>,
    @location(1) uv: vec2<f32>,
    @location(2) normal: vec3<f32>, 
}

@vertex
fn vs_main(in: VertexInput) -> VertexOutput {
    let world_position = model_matrix.model_matrix * vec4<f32>(in.position, 1.0);
    let world_normal = model_matrix.model_matrix * vec4<f32>(in.normal, 0.0);
    return VertexOutput(
        camera.projection * world_position,
        world_position.xyz,
        in.uv,
        normalize(world_normal.xyz)
    );
}

const e: vec2<f32> = vec2<f32>(1.0, 0.0);

@fragment
fn nontex_main(in: VertexInput) -> @location(0) vec4<f32> {
    let camera_dir = normalize((camera.camera_matrix * e.yyyx).xyz - in.position);
    let normal = normalize(in.normal);
    var pre_color: vec3<f32> = vec3<f32>(0.0);
    for (var i: u32 = 0u; i < info.nlights; i = i + 1u) {
        pre_color = pre_color + microfacet_color(
            in.position,
            normal,
            lights.lights[i],
            camera_dir,
            material.material,
        );
    }
    pre_color = clamp(pre_color, vec3<f32>(0.0), vec3<f32>(1.0));
    pre_color = background_correction(pre_color, info.bk_color.xyz, material.material);
    pre_color = ambient_correction(pre_color, material.material);

    return vec4<f32>(pow(pre_color, vec3<f32>(0.4545)), material.material.albedo.a);
}

@fragment
fn tex_main(in: VertexInput) -> @location(0) vec4<f32> {
    var matr: Material = material.material;
    matr.albedo = textureSample(r_color, r_sampler, in.uv);
    matr.albedo = vec4<f32>(pow(matr.albedo.rgb, vec3<f32>(2.2)), matr.albedo.a);
    let camera_dir = normalize((camera.camera_matrix * e.yyyx).xyz - in.position);
    let normal = normalize(in.normal);
    var pre_color: vec3<f32> = vec3<f32>(0.0);
    for (var i: u32 = 0u; i < info.nlights; i = i + 1u) {
        pre_color = pre_color + microfacet_color(
            in.position,
            normal,
            lights.lights[i],
            camera_dir,
            matr,
        );
    }
    pre_color = clamp(pre_color, vec3<f32>(0.0), vec3<f32>(1.0));
    pre_color = background_correction(pre_color, info.bk_color.xyz, material.material);
    pre_color = ambient_correction(pre_color, matr);

    return vec4<f32>(pow(pre_color, vec3<f32>(0.4545)), matr.albedo.a);
}