open GL screen tearing in dev builds

domjam · 06-24-2014, 10:15 PM #1

i dont no were the problem started but i have tested 4.0 1941 and for me when using open GL i have very bad screen tearing. enabling v sync dose not fix it. this dose not happen for me in the stable builds of dolphin.

**Anti-Ultimate** · 06-24-2014, 11:30 PM #2

It's been known for ages, but no one really found out what build caused it.

domjam · 06-25-2014, 12:52 AM #3

well i did some testing myself and though i did not test every single build from 4.0 to latest i did narrow it down to this. 4.0 623 ran pefectly on open gl with no screen tearing. but 4.0 651 is were the screen tearing started. i was unable to test other revisions between these 2 builds as they did not seem to show on the list in the download section. i hope this helps fix the open gl screen tearing issue for future builds of dolphin.

**Anti-Ultimate** · 06-25-2014, 01:21 AM #4

I fixed it already. Waiting to create a Github fork so I can make a pull request.

**Anti-Ultimate** · 06-25-2014, 01:54 AM #5

https://github.com/dolphin-emu/dolphin/pull/533

Now this is only a workaround because something is wrong with GLExtensions, it seems.

**mbc07** · 06-25-2014, 02:41 AM #6

At least here, force disabling V-Sync in nVidia Control Panel strangely fixes tearing in OpenGL...

**Anti-Ultimate** · 06-25-2014, 02:44 AM #7

On AMD cards, you actually need to force VSync to fix the tearing.

purpasmart96 · (This post was last modified: 06-25-2014, 01:28 PM by purpasmart96.)

Yeah, just got a Amd r9 280x (upgraded from a GTX 560) and there was noticeably much more screen tearing going on.

**Anti-Ultimate** · 06-25-2014, 01:46 PM #9

Try this build: https://dl.dolphin-emu.org/prs/pr-533-dolphin-latest-x64.7z

Enable VSync and see if the tearing still happens.

purpasmart96 · 06-25-2014, 02:08 PM **#10**

It's fixed.