X4500MHD opengl and vertical sync problem

idata — Thu, 27 Dec 2012 13:01:00 GMT

Hi,

I'm experiencing a problem with an opengl software and vertical sync on a X4500MHD graphic card:

I'm a developer of a digital signage software and I need to update the display according to the vertical refresh of the monitor to avoid

tearing effects.

Pseudo code of the rendering loop:

while (true)

{

renderScene();

SwapBuffers();

glFinish();

}

It seems that the glFinish() doesn't wait for vertical retrace and returns immediately;

in the opengl setup, I call wglSwapIntervalEXT(1) to enable vertical sync, but seems that the call is ignored.

The hardware is a set top box with intel core2 duo processor, GM45 chipset running a windows 7 sp1 32-bit;

the driver version is latest (8.15.10.2869).

On other graphic cards, mainly NVidia, the software works correctly.

Is anyone experiencing the same problem?

Is there any solution?

Re: X4500MHD opengl and vertical sync problem

NICHOLAS_F_Intel — Wed, 03 Apr 2013 21:10:55 GMT

Hi simone,

I have escalated this question to our OpenGL* specialists, and they have informed me that this platform is no longer being actively developed. You might consider upgrading to a newer system in order to achieve better OpenGL* functionality.

Thanks,

-Nic

topic Re: X4500MHD opengl and vertical sync problem in Graphics

X4500MHD opengl and vertical sync problem

Re: X4500MHD opengl and vertical sync problem