#version 330 core

// Input
in vec2 TexCoord;

// Output
out vec4 PixelColor;

// Uniforms
uniform int RGBALayer;
uniform vec4 FontColor;
uniform sampler2D Texture;

// Main
void main()
{
	switch (RGBALayer)
	{
	case 0x0: PixelColor = texture(Texture, TexCoord).rrrr; break;
	case 0x1: PixelColor = texture(Texture, TexCoord).gggg; break;
	case 0x2: PixelColor = texture(Texture, TexCoord).bbbb; break;
	case 0x3: PixelColor = texture(Texture, TexCoord).aaaa; break;
	default:  PixelColor = vec4(0,0,0,0); break;
	}
	
	PixelColor *= FontColor;
}