text_combined: gamasutra rssfeedsspamassassintaintorg url httpwwwnewsisfreecomclick08613675159 date 20021006t1812450100 feature excerpted wolfgang engels shaderx book wordware publishing presents simple shader trick performs good per pixel approximation noninteger power function technique works input values 0 1 supports large exponents presented shader require texture lookup scalable making possible spend instructions order decrease error reach greater exponents mon 07 oct 2002 080048 0000 noninteger power function pixel shader