#version 330 core

uniform  sampler2D  uTexture;

in       vec2       vTextureXY;

out      vec3       fColor;

vec3 grayscale(vec3 original) {

	const vec3 luminanceWeighting = vec3(0.2125, 0.7154, 0.0721);

	float luminance = dot(original, luminanceWeighting);

	return vec3(luminance);

}

void main(){

	fColor = texture(uTexture, vTextureXY).rgb;

	// fColor = grayscale(fColor);

	// fColor *= vec3(0.8, 1., 0.2);

}