// This shader recomines two textures with a given operation.
// The operation is:
// result = tex0 * lerp(gamma, 1.f, tex1) + tex1 * beta
xps.1.1


def c0, 0,0,0,0 // a = gama
def c1, 0,0,0,0 // a = beta

tex t0
tex t1

// r0 = lerp(gamma, 1.f, tex1)
lrp r0, c0.a, t1, 1-zero
// r0 = r0 * t0 + t1 * beta
xmma discard, discard, r0, r0, t0, t1, c1.a