1 files changed, 22 insertions, 0 deletions
diff --git a/gfx/thebes/genTables.py b/gfx/thebes/genTables.py
new file mode 100644
index 000000000..0e902c52a
--- /dev/null
+++ b/gfx/thebes/genTables.py
@@ -0,0 +1,22 @@
+#!/usr/bin/python
+
+from __future__ import print_function
+import sys
+
+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)])
+
+def generate(output):
+    output.write("const uint8_t gfxUtils::sPremultiplyTable[256*256] = {\n");
+    output.write(table_generator(lambda i: ((i / 256) * (i % 256) + 254) / 255) + "\n")
+    output.write("};\n");
+    output.write("const uint8_t gfxUtils::sUnpremultiplyTable[256*256] = {\n");
+    output.write(table_generator(lambda i: (i % 256) * 255 / ((i / 256) if (i / 256) > 0 else 255) % 256) + "\n")
+    output.write("};\n");
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        print("Usage: genTables.py <header.h>", file=sys.stderr)
+        sys.exit(1)
+    with open(sys.argv[1], 'w') as f:
+        generate(f)