[pypy-commit] lang-smalltalk storage-display-refactoring: Added comment.

[anton_gulenko]

Author: Anton Gulenko <anton.gulenko at googlemail.com>
Branch: storage-display-refactoring
Changeset: r936:6f3f768d7ce8
Date: 2014-07-22 21:01 +0200
http://bitbucket.org/pypy/lang-smalltalk/changeset/6f3f768d7ce8/

Log:	Added comment.

diff --git a/spyvm/model_display.py b/spyvm/model_display.py
--- a/spyvm/model_display.py
+++ b/spyvm/model_display.py
@@ -171,7 +171,7 @@
         W_DisplayBitmap.__init__(self, space, w_class, size, depth)
     
     def take_over_display(self):
-        pitch = r_uint(self.display.pitch)
+        pitch = r_uint(self.display.pitch) # The pitch is different from the width input to SDL!
         self.pitch = pitch
         self.bits_in_last_word = pitch % BITS
         self.words_per_line = r_uint((pitch - self.bits_in_last_word) / BITS)
@@ -202,4 +202,4 @@
         word_on_line = n % self.words_per_line
         y = r_uint((n - word_on_line) / self.words_per_line)
         x = word_on_line * BITS / r_uint(self._depth)
-        return y * r_uint(self.pitch) + x
+        return y * self.pitch + x