#define TEX_PAN_PARAMS_ID(panID)
#define TEX_PAN_PARAMS_STEP(main_step_du, main_step_dv, aux_step_du, aux_step_dv)
#define TEX_PAN_PARAMS_FREQ(main_freq_u, main_freq_v, aux_freq_u, aux_freq_v)
#define TEX_PAN_PARAMS_INIT(main_init_u, main_init_v, aux_init_u, aux_init_v)