[layout(std140)]
struct ViewerData
{
	projectionMatrix: mat4<f32>,
	invProjectionMatrix: mat4<f32>,
	viewMatrix: mat4<f32>,
	invViewMatrix: mat4<f32>,
	viewProjMatrix: mat4<f32>,
	invViewProjMatrix: mat4<f32>,
	renderTargetSize: vec2<f32>,
	invRenderTargetSize: vec2<f32>,
	eyePosition: vec3<f32>
}

external
{
	[set(0), binding(0)] viewerData: uniform<ViewerData>,
	[set(0), binding(1)] colorTexture: sampler2D<f32>,
}

struct FragIn
{
	[builtin(fragcoord)] fragcoord: vec4<f32>,
	[location(0)] uv: vec2<f32>
}

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

struct VertIn
{
	[location(0)] pos: vec2<f32>,
	[location(1)] uv: vec2<f32>
}

struct VertOut
{
	[builtin(position)] position: vec4<f32>,
	[location(0)] uv: vec2<f32>
}

[entry(frag)]
fn main(input: FragIn) -> FragOut
{
	/*let BrightLuminance = 0.8;
	let BrightMiddleGrey = 0.5;
	let BrightThreshold  = 0.7;

	let color = colorTexture.Sample(input.uv).rgb;
	color *= BrightMiddleGrey / BrightLuminance;
	color *= vec3<f32>(1.0, 1.0, 1.0) + (color / (BrightThreshold*BrightThreshold));
	color -= vec3<f32>(0.5, 0.5, 0.5);
	color /= vec3<f32>(1.0, 1.0, 1.0) + color;*/

	let output: FragOut;
	//output.color = vec4<f32>(max(color, vec3<f32>(0.0, 0.0, 0.0)), 1.0);

	let color = colorTexture.Sample(input.uv).rgb;
	let brightness = dot(color, vec3<f32>(0.2126, 0.7152, 0.0722));
	if (brightness > 1.0)
		output.color = vec4<f32>(color, 1.0);
	else
		output.color = vec4<f32>(0.0, 0.0, 0.0, 1.0);

	return output;
}

[entry(vert)]
fn main(input: VertIn) -> VertOut
{
	let output: VertOut;
	output.position = vec4<f32>(input.pos, 0.0, 1.0);
	output.uv = input.uv;

	return output;
}