BattleAngelAlita

void vert(inout appdata_full v, out Input o) 
{
  UNITY_INITIALIZE_OUTPUT(Input, o);
  
  // get the camera basis vectors
  float3 forward = -normalize(UNITY_MATRIX_V._m20_m21_m22);
  float3 up = float3(0, 1, 0); //normalize(UNITY_MATRIX_V._m10_m11_m12);
  float3 right = normalize(UNITY_MATRIX_V._m00_m01_m02);
  
  // rotate to face camera