R"raw_string(
#version 120

attribute vec3 in_vertex;
attribute vec3 in_normal;

varying vec3 vertex;
varying vec3 normal;
varying vec3 lightvec;

uniform mat4 model;
uniform vec3 lightpos;

void main()
{
  //vec3 p = position + scale*gl_Vertex.xyz;

  vec3 p = (model*gl_Vertex).xyz;
  lightvec = normalize(lightpos - p);

  vertex = p.xyz;
  normal = in_normal.xyz;

  gl_Position = vec4(p, 1.0);
}
)raw_string"