new file mode 100644
--- /dev/null
+++ b/pytouhou/ui/sdl/sprite.pyx
@@ -0,0 +1,61 @@
+# -*- encoding: utf-8 -*-
+##
+## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published
+## by the Free Software Foundation; version 3 only.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+
+
+from libc.math cimport M_PI as pi
+
+
+cpdef object get_sprite_rendering_data(Sprite sprite):
+    cdef double x, y, tx, ty, tw, th, sx, sy, rz, tox, toy
+
+    if not sprite.changed:
+        return sprite._rendering_data
+
+    x = 0
+    y = 0
+
+    tx, ty, tw, th = sprite.texcoords
+    sx, sy = sprite.rescale
+    width = sprite.width_override or (tw * sx)
+    height = sprite.height_override or (th * sy)
+
+    rz = sprite.rotations_3d[2]
+    if sprite.automatic_orientation:
+        rz += pi/2. - sprite.angle
+    elif sprite.force_rotation:
+        rz += sprite.angle
+
+    if sprite.allow_dest_offset:
+        x += sprite.dest_offset[0]
+        y += sprite.dest_offset[1]
+    if not sprite.corner_relative_placement: # Reposition
+        x -= width / 2
+        y -= height / 2
+
+    size = sprite.anm.size
+    x_1 = 1 / <double>size[0]
+    y_1 = 1 / <double>size[1]
+    tox, toy = sprite.texoffsets
+    uvs = (tx * x_1 + tox,
+           (tx + tw) * x_1 + tox,
+           ty * y_1 + toy,
+           (ty + th) * y_1 + toy)
+
+    key = sprite.blendfunc
+    r, g, b = sprite.color
+    values = (x, y, width, height), uvs, (r, g, b, sprite.alpha), -rz * 180 / pi, sprite.mirrored
+    sprite._rendering_data = key, values
+    sprite.changed = False
+
+    return sprite._rendering_data