#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);
}