Hi,
I am converting some PTB2 code to PTB3. The code originally utilised
the ability to draw into an off screen window then display the window
then wait for some time for a response then draw some more into the
window and then redisplay it with the original drawing still intact.
I thought I could use the dontclear parameter of flip to do this but I
get an error:
OpenGL AUX buffers unavailable! dontclear=1 in Screen-Flip doesn't
work without them.
Either unsupported by your graphics card, or you disabled them via
call to Screen('Preference', 'ConserveVRAM')?
To the best of my knowledge I haven't set ConserveVRAM and I am using
an ATI X300 based graphics card. I also tried vblsynctest with
dontclear=1 and I got the same problem.
Without this I have to create the drawing again completely before and
after waiting for a response which is to say the least inefficient.
Is this a known problem or am I doing something else wrong.
Thanks a lot,
Regards,
Matthew.
I am converting some PTB2 code to PTB3. The code originally utilised
the ability to draw into an off screen window then display the window
then wait for some time for a response then draw some more into the
window and then redisplay it with the original drawing still intact.
I thought I could use the dontclear parameter of flip to do this but I
get an error:
OpenGL AUX buffers unavailable! dontclear=1 in Screen-Flip doesn't
work without them.
Either unsupported by your graphics card, or you disabled them via
call to Screen('Preference', 'ConserveVRAM')?
To the best of my knowledge I haven't set ConserveVRAM and I am using
an ATI X300 based graphics card. I also tried vblsynctest with
dontclear=1 and I got the same problem.
Without this I have to create the drawing again completely before and
after waiting for a response which is to say the least inefficient.
Is this a known problem or am I doing something else wrong.
Thanks a lot,
Regards,
Matthew.