AnsweredAssumed Answered

stemwin double buffering glitch

Question asked by hauser.philipp on Apr 28, 2014
Latest reply on May 12, 2014 by Montassar BEN ROMDHANE
Hi there,

i'm trying to use stemwin with double buffering on a STM32F429.
Unfortunately there seem to be glitches when drawing.

Stemwin is configured with the correct frame buffer address and the mechanism of switching the buffer seems correct.
First the front buffer is copied to the back buffer and then the buffers are switched (Frame buffer start address is changed in the display controller).

At that point of switching the buffers, some glitches occur. They appear over the whole screen, which looks different from tearing effects.

It looks like stemwin tries to draw in the active front buffer, which is forbidden.

Has anyone encountered a similar problem and can help me?

Thanks!

Outcomes