texgen.js 程序纹理生成器 用法 var texture = new TG . Texture ( 256 , 256 ) . add ( new TG . XOR ( ) . tint ( 1 , 0.5 , 0.7 ) ) . add ( new TG . SinX ( ) . frequency ( 0.004 ) . tint ( 0.5 , 0 , 0 ) ) . mul ( new TG . SinY ( ) . frequency ( 0.004 ) . tint ( 0.5 , 0 , 0 ) ) . add ( new TG . SinX ( ) . frequency ( 0.0065 ) . tint ( 0.1 , 0.5 , 0.2 ) ) . add ( new TG . SinY ( ) . frequency