[PyOpenGL-Users] Very slow DrawPixels

[Mathew Y. <ma...@fu...>]

The current implementation of DrawPixels (using Numeric) is very slow when 
arbitrary
sub rectangles from a large array are to be displayed. Instead  of this,
I first make sure that may array is contigous and then
in DrawPixelsus I use 

glPixelStorei(GL_UNPACK_SKIP_ROWS,starty);
        glPixelStorei(GL_UNPACK_SKIP_PIXELS,startx);
        glPixelStorei(GL_UNPACK_ROW_LENGTH,cols);

and just pass a pointer to my arrays data.
MUCH faster.

Mathew