/////////////////////////////////////
// Set UV coordinates for droplets //
/////////////////////////////////////

// copy base UV

mov oT0, v3

// get up & right vector from 2nd UV's

mov r1.xy, -v4.xy
mov r0.x, r1.y
mov r0.y, -r1.x

// set 3 x 2 bump mat

mul oT1.xy, r0.xy, c94.yy
mad oT1.z, v0.x, c94.y, c94.z

mul oT2.xy, r1.xy, c94.yy
mad oT2.z, -v0.y, c94.y, c94.z