#ifdef DESC
[program]
type: graphics
vertex: main
fragment: main

[binding]
name: mesh
rate: vertex
[attribute]
name: position
type: vec3
[attribute]
name: normal
type: vec3
[attribute]
name: uv
type: vec2

[interpolator]
name: uv
type: vec2
[interpolator]
name: normal
type: vec3

[struct]
name: MVP
[variable]
name: model
type: mat4
[variable]
name: view_projection
type: mat4

[cbuffer]
name: c_mvp
type: MVP
stage: vertex

[target]
name: colour
type: vec4

#endif

#ifdef VERTEX_SHADER

void main() {
	interpolator.uv = uv;
	interpolator.normal = mat3(c_mvp.model) * normal;
	gl_Position =
		c_mvp.view_projection *
		c_mvp.model *
		vec4(position, 1.0);
}

#endif

#ifdef FRAGMENT_SHADER

void main() {
	vec3 normal = normalize(interpolator.normal);
	float light = max(dot(normal, vec3(0, 0, 1)), 0.0);
	colour = vec4(light.xxx, 1.0);
}

#endif