full_frame_quad.frag

#version 330

/*
 *  Copyright (C) 2010 - 2015 Leonid Kostrykin
 *
 *  Chair of Medical Engineering (mediTEC)
 *  RWTH Aachen University
 *  Pauwelsstr. 20
 *  52074 Aachen
 *  Germany
 *
 */

uniform sampler2D colorMap;
uniform float alphaFactor;

in vec2 textureCoordinates;

out vec4 gl_FragColor;


// ----------------------------------------------------------------------------------
// Fragment Procedure
// ----------------------------------------------------------------------------------

void main()
{
    vec4 color = texture( colorMap, textureCoordinates );
    gl_FragColor = vec4( color.rgb, color.a * alphaFactor );
}