From eb1d1b5cfb474b087d41337356efc0cdb7342f28 Mon Sep 17 00:00:00 2001
From: Josh Blum
Date: Wed, 2 Sep 2009 14:06:34 -0700
Subject: Fix so that the waterfall texture is initialized with a buffer of the
 same size.

If the fft size was a non power of two, the buffer would be a different size.
This would cause a segfault. Particularly because fft_window was throwing out a bin.
---
 gr-wxgui/src/python/plotter/waterfall_plotter.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'gr-wxgui/src/python/plotter/waterfall_plotter.py')

diff --git a/gr-wxgui/src/python/plotter/waterfall_plotter.py b/gr-wxgui/src/python/plotter/waterfall_plotter.py
index 2e0669961..d32b0ca0a 100644
--- a/gr-wxgui/src/python/plotter/waterfall_plotter.py
+++ b/gr-wxgui/src/python/plotter/waterfall_plotter.py
@@ -209,7 +209,7 @@ class waterfall_plotter(grid_plotter_base):
 		self._pointer = 0
 		if self._num_lines and self._fft_size:
 			GL.glBindTexture(GL.GL_TEXTURE_2D, self._waterfall_texture)
-			data = numpy.zeros(self._num_lines*self._fft_size*4, numpy.uint8).tostring()
+			data = numpy.zeros(self._num_lines*ceil_log2(self._fft_size)*4, numpy.uint8).tostring()
 			GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, ceil_log2(self._fft_size), self._num_lines, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, data)
 		self._resize_texture_flag = False
 
-- 
cgit