#version 450 core
in vec4 vPosID;
in vec4 vCol;
in vec4 vControls;
layout (location=0) out vec4 fCol;
layout (location=1) out vec4 fPos;
layout (location=2) out vec4 fNorm;
void main()
{
    float d = dot(vControls,vControls);
    if (d > 1) {discard;}
    fCol = vec4(vCol.xyz,vCol.w*(1-d));
    fPos = vec4(vPosID.xyz, vCol.w*(1-d));
    fNorm = vec4(vControls.xy, 0.1 ,fPos.w); // note arbitrary 0.1, might want to point downwards at the edges?
}