VAR_GAMMA_WEIGHT  136 libavfilter/vf_eq.c     eq->var_values[VAR_GAMMA_WEIGHT] =  av_clipf(av_expr_eval(eq->gamma_weight_pexpr, eq->var_values, eq),  0.0,  1.0);
VAR_GAMMA_WEIGHT  143 libavfilter/vf_eq.c         eq->param[i].gamma_weight = eq->var_values[VAR_GAMMA_WEIGHT];