ANISOTROPIC
Anisotropic-splat renderer setup: centres + scales + rotations + rgba (alpha baked in); SH still skipped (DC term only). Use when the shader does proper covariance projection but no view-dependent colour.
Anisotropic-splat renderer setup: centres + scales + rotations + rgba (alpha baked in); SH still skipped (DC term only). Use when the shader does proper covariance projection but no view-dependent colour.