Imagination PowerVR SDK Blog

Frame Rate configuration


#1

Hi,

I have a problem with frame rate configuration.

In case PVRShell is used, RenderScene is called on each v-sync.

If PVRShellSet(prefSwapInterval, 2) or eglSwapInterval() is executed,

the RenderScene is called at a second of v-sync.

Is this correct?

I tried with SDK demo program, but it seems not be effective.

I set the swap interval in InitView()

 

regards,

zakky

 

 

#2

By default and where available vsync is disabled when using PVRShell. This is explicitly set by a line such as:





Code:
PVRShellSet(prefSwapInterval,0);



A value of 1 sets normal vsyncing (limited to 60fps, for example), 2 indicates that your app will render every second vsync (limited to 30fps) etc.



Which platform are you trying this on and with which demo?


#3

Gordon,

I am using Linux on TI's AM3517 EVM (by LOGIC).

Demo is "Vase" of SDK.

 

Regards,

Zakky