cmp.txt revision 32001f49 
132001f49Smrg!!ARBfp1.0
232001f49SmrgTEMP R0;
332001f49SmrgSUB R0, {0.5}.x, fragment.color;
432001f49SmrgCMP result.color, R0, fragment.color, {0.0}.x;
532001f49SmrgEND
6