code: func DrawTransformFeedbackInstanced(mode uint32, id uint32, instancecount int32) {
  	C.glowDrawTransformFeedbackInstanced(gpDrawTransformFeedbackInstanced, (C.GLenum)(mode), (C.GLuint)(id), (C.GLsizei)(instancecount))
  }
docs: // render multiple instances of primitives using a count derived from a transform feedback object