Initial import

[glmemperf] / data / rotate.py

diff --git a/data/rotate.py b/data/rotate.py
new file mode 100755 (executable)
index 0000000..38ae6fe
--- /dev/null
+++ b/data/rotate.py
@@ -0,0 +1,46 @@
+#!/bin/bin/python
+# -*- encoding: iso-8859-1 -*-
+# OpenGL ES 2.0 memory performance estimator
+# Copyright (C) 2009 Nokia
+#
+# 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; either version 2 of the License, or
+# (at your option) any later version.
+#
+# 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.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# \author Sami Kyöstilä <sami.kyostila@nokia.com>
+#
+import sys
+
+if not len(sys.argv) == 5:
+    print "Usage: %s SOURCE DEST BYTES-PER-PIXEL STRIDE" % sys.argv[0]
+    sys.exit(1)
+
+fsrc = open(sys.argv[1], "rb")
+fdst = open(sys.argv[2], "wb")
+bpp = int(sys.argv[3])
+stride = int(sys.argv[4])
+
+lines = []
+while 1:
+  line = fsrc.read(stride)
+  if not line: break
+  lines.append(line)
+
+print "%dx%dx => %dx%d" % (stride / bpp, len(lines), len(lines), stride / bpp)
+
+for x in range(0, stride, bpp):
+  for line in lines:
+    fdst.write(line[x:x+bpp])
+
+fsrc.close()
+fdst.close()