Method CalVector4

test/skinning_test_no_simd.cpp:35–40

struct CalVector4 : CalBase4 {
  CalVector4() {
    x = 0.0f;
    y = 0.0f;
    z = 0.0f;
    w = 0.0f;
  }

  CalVector4(float x, float y, float z, float w = 0.0f) {
    this->x = x;