Re: [PyOpenGL-Users] Rolling spectrogram with pyopengl

[Greg E. <gre...@ca...>]

Timothée Lecomte wrote:
> As far as  
> alternatives to pure glTexSubImage2D, I have considered and tried to  
> use PBO, but it does not decrease the time needed by the two  
> glTexSubImage2D calls.

This is puzzling, because transferring 1000 pixels of data
shouldn't take very long, even if you're not doing it the
most efficient way.

The only thing I can think of is to try using different
pixel formats for the texture data. Fastest CPU->GPU transfers
occur when you use a pixel format that matches what the
GPU uses, so that no conversions are needed.

-- 
Greg