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-rw-r--r--gr-wxgui/src/python/plotter/waterfall_plotter.py2
1 files changed, 1 insertions, 1 deletions
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