[vertex program]
!!VP1.0
	MOV	R1, c[0];	# Comment out this line and it works
	MOV	R2, c[2];
	MOV	R1, c[1];
	MAD	R0, R2, R1.x, R1.y;

	# Assume that the instruction generates a set of values on the range
	# [0,1] that can be directly written as colors.
	MOV	o[COL0], R0;
	MOV	o[HPOS], v[OPOS];
	END

[test]
clear color 0.1 0.1 0.1 1.0
clear

parameter env_vp 1 (0.5, 0.25, 0.0, 0.0)
parameter env_vp 2 (0.14723, 0.67507, 0.05856, 0.15502)
draw rect -1.0 -1.0 0.125 0.125
relative probe rgba (0.03125, 0.03125) (0.323615, 0.587535, 0.27928, 0.32751)