" float dither = fract( vDither.g / 71.0 ) - 0.5;\n"
"\n"
" float dcam = (-8.0+distance( aCo, uCamera ))/4.0;\n"
-" if( min(aCo.y*0.5 + dither, dcam + dither) < 0.51 ) discard;\n"
+" float dy0 = aCo.y - uMapInfo.x;\n"
+" float dy1 = uMapInfo.y - aCo.y;\n"
+"\n"
+" if( min(min(dy0,dy1)*0.5, dcam) + dither < 0.51 ) \n"
+" discard;\n"
"\n"
" compute_motion_vectors();\n"
"\n"