-- CONST[0] = {0.159155, 0.5, 6.283185, -3.141593}
-- CONST[1] = {rotate, _, _, _}

-- each instruction is only allowed to use a single unique `const` address
--
-- instructions may use multiple `temp` addresses, so const[1] is moved to
-- temp[0]:
--
temp[0].x    = VE_ADD  const[1].x___  const[1].0___ ;

-- ME_SIN and ME_COS clamp their inputs to [-π,+π] prior to the sin/cos
-- calculation.
--
-- This 3-instruction sequence remaps the range [-∞,+∞] to [-π,+π]
temp[1].x    = VE_MAD   temp[0].x___  const[0].x___  const[0].y___ ;
temp[2].x    = VE_FRC   temp[1].x___ ;
temp[3].x    = VE_MAD   temp[2].x___  const[0].z___  const[0].w___ ;

temp[4].x    = ME_SIN   temp[3].___x ;
temp[4].y    = ME_COS   temp[3].___x ;

-- with sin and cos calculated, this now ordinary two-dimensional rotation:
--
--  x = position.x * cost - position.y * sint
--  y = position.x * sint + position.y * cost
--  z = 0
--  w = 1
temp[5].xy   = VE_MUL  input[0].yy__   temp[4].xy__ ;
 out[0].xyzw = VE_MAD  input[0].xx01   temp[4].yx01  temp[5].-xy00 ;