ADSPhong.vp

// ADS Point lighting Shader
// Vertex Shader
#version 330

in vec4 vVertex;
in vec3 vNormal;

uniform mat4 mvpMatrix;
uniform mat4 mvMatrix;
uniform mat3 normalMatrix;
uniform vec3 vLightPosition;

smooth out vec3 vVaryingNormal;
smooth out vec3 vVaryingLightDir;

void main(void) 
{ 
    vVaryingNormal = normalMatrix * vNormal;

    vec4 vPosition4 = mvMatrix * vVertex;
    vec3 vPosition3 = vPosition4.xyz / vPosition4.w;

    vVaryingLightDir = normalize(vLightPosition - vPosition3);

    gl_Position = mvpMatrix * vVertex;
}