# eglSwapInterval not working

**URL:** <https://forums.imgtec.com/t/eglswapinterval-not-working/3238>\
**Category:** PowerVR Insider\
**Created:** [July 27, 2020, 3:02am UTC](https://forums.imgtec.com/t/eglswapinterval-not-working/3238 "2020-07-27T03:02:22Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![AlejandroC](https://avatars.discourse-cdn.com/v4/letter/a/97f17d/32.png) [@AlejandroC](https://forums.imgtec.com/u/AlejandroC)\
**Post date:** [August 3, 2020, 9:39am UTC](https://forums.imgtec.com/t/eglswapinterval-not-working/3238/2 "2020-08-03T09:39:32Z")

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Hi jiu,

I’d recommend verifying the steps below:

1. Query the values EGL\_MIN\_SWAP\_INTERVAL and EGL\_MAX\_SWAP\_INTERVAL, since the final interval value is clamped to those values.
2. Verify the EGLBoolean value returned by the call to eglSwapInterval.
3. Make sure you have a drawing surface bound to the context from where you’re calling eglSwapInterval.

Also, you might find some interesting posts about the behaviour of eglSwapInterval in coordination with VSync in this post: [eglSwapInterval = 0 tearing problem](https://forums.imgtec.com/t/eglswapinterval-0-tearing-problem/2356) Maybe it is working, but not in the way you were expecting it to.

Please, let me know after those verifications if you’re still experiencing any issues,

Alejandro

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