ps.1.0	//defines the pixel shader version (1.0)
tex t0	//load ARGB data from texture 0
tex t1  //load ARGB data from texture 1
mov r0, t1	//move the texture 1 data into the output register, r0
add r0, r0, t0	//add the texture 0 data to the register r0, and place the result into r0