about page flipping

Accelerated Computing CUDA CUDA Programming and Performance
1

hello…

I have two sources…
one is left eye images… another is right eye image :mellow: s…
The Display’s refresh rate is 120 Hz…
I want to draw Left and Right eye images with 120 Hz to realize page flipping …

But I dont’t know how to get the 120HZ signal to
accurately draw Left or Right eye images on display…
Somebody suggested me that maybe I can use NVAPI ~ NvAPI_GetVBlankCounter () to get the V-sync signal
But it’s not a continuous signal to get the 120 HZ trigger

Does anyone know how to realize page flipping?
Thanks!! :rolleyes:

2

120 HZ means 120 times a second… Thus your Vertical Retrace signal should occur 120 times per second…

I am assuming that VBlank()… API basically gives you the Vertical Retrace signal. During this period, the electron gun (or whatever) makes a comeback from Right bottom ofscreen to Left-top and the gun is shut-off during the process…
Thus updates to video memory wont cause flicker and you get flicker-less display updation.

I am not sure if the v-sync thing still holds good for modern monitors… Not sure…