//------------------------------------------------------------------------------
// zoom blit
//------------------------------------------------------------------------------
xps.1.1

// source textures (should just be the same texture with 'zoomed' texcoords
tex t0
tex t1
tex t2
tex t3

// c0 = modulation factor (each texture is modulated by this before adding them together

xmma discard, discard, r0, t0, c0, t1, c0
xmma discard, discard, r1, t2, c0, t3, c0
add r0, r0, r1