diff -r 000000000000 -r 6474c204b198 gfx/layers/genTables.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/genTables.py	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+#!/usr/bin/python
+
+def table_generator(f):
+  return ",\n".join([", ".join(["0x%2.2x" % h for h in [f(i) for i in range(r,r+16)]]) for r in range(0, 65536, 16)])
+
+with open("PremultiplyTables.h", "w") as f:
+  f.write("const uint8_t PremultiplyTable[256*256] = {\n");
+  f.write(table_generator(lambda i: ((i / 256) * (i % 256) + 254) / 255) + "\n")
+  f.write("};\n");
+  f.write("const uint8_t UnpremultiplyTable[256*256] = {\n");
+  f.write(table_generator(lambda i: (i % 256) * 255 / ((i / 256) if (i / 256) > 0 else 255) % 256) + "\n")
+  f.write("};\n");