e74a3284f5
It's only used by fragment shaders, so halving it matches the size used in the most optimal primitive pipeline (VS + FS). This change frees some URB space for mesh and task shaders and as a result improves vk_meshlet_cadscene performance by up to 2%, depending on the model. Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21559>