https://gist.github.com/baobao/5c21deb63e7866eed75f415057b6a25d がGLSLに書き出されるとこうなる

SimpleShaderCompiled.shader

Shader "Simple" 
{
  SubShader 
  { 
    Pass 
    {
      GpuProgramID 16286
      Program "vp" 
      {
        SubProgram "gles " 
        {
"#version 100

#ifdef VERTEX
attribute vec4 _glesVertex;
uniform highp mat4 glstate_matrix_mvp;
void main ()
{
  gl_Position = (glstate_matrix_mvp * _glesVertex);
}
#endif

#ifdef FRAGMENT
void main ()
{
  gl_FragData[0] = vec4(1.0, 1.0, 1.0, 1.0);
}
#endif
        "
        }
      }
      Program "fp" 
      {
        SubProgram "gles " 
        {
"// shader disassembly not supported on gles"
        }
      }
    }
  }
}