Stuttering movement and black screen on macOS 10.14 & Xcode 10 #19080

drelaptop · 2018-09-29T01:32:53Z

cocos2d-x version: 3.17

https://discuss.cocos2d-x.org/t/stuttering-movement-and-black-screen-on-macos-10-14-mojave-and-cocos2d-x-3-17/43860

https://discuss.cocos2d-x.org/t/xcode-10-and-clion-black-screen/43780

I think newer issues on Xcode 10 or macOS 10.14 should be solved before next release.

Volodymyr-13 · 2018-09-29T14:37:22Z

Interesting, same issue happened for me for cocos2d-iphone, because I'm using SpriteBuilderX.
When launching it - no OpenGL view seen, nothing drawn.

I have no idea why it's happening. Tried to change OpenGL view settings, but nothing helps..

Volodymyr-13 · 2018-09-29T14:58:35Z

@drelaptop @minggo I think I found whats the problem glfw/glfw#1334
also hajimehoshi/ebiten#691 looking this cause it. However, I'm not sure.

stevetranby · 2018-10-02T11:36:52Z

I think I was able to hack around this issue following other's advice that the context needs to be updated. If you haven't already got it working, let me know if this works for you and if you have any thoughts.
[MacMini, Mojave 10.14.0, XCode 10]

CCApplication-mac.mm

int Application::run() 
{
//...
    unsigned int ctx_updated_count = 0;
//...
    while (!glview->windowShouldClose())
    {
        //...
        // STEVE: look into doing this outside loop to get rid of condition test per frame
        if(ctx_updated_count < 2) {
            ctx_updated_count++;
            NSOpenGLContext* ctx = (NSOpenGLContext*)glview->getNSGLContext();
            [ctx update];
        }

        director->mainLoop();
        glview->pollEvents();
        //...
    }

CCGLViewImpl-Desktop.h

//...approx. Line 128
#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
    id getCocoaWindow() override { return glfwGetCocoaWindow(_mainWindow); }
    id getNSGLContext() override { return glfwGetNSGLContext(_mainWindow); } // STEVE: added
#endif // #if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
//...

CCGLView.h

//...approx. Line 428
#if (CC_TARGET_PLATFORM == CC_PLATFORM_MAC)
    virtual id getCocoaWindow() = 0;
    virtual id getNSGLContext() = 0; // STEVE: added
#endif /* (CC_TARGET_PLATFORM == CC_PLATFORM_MAC) */
//...

Volodymyr-13 · 2018-10-02T11:40:26Z

I just used Xcode 9. Everything works perfect in it, nothing needs to be changed.
Also, I reported bug to Apple, will see what's happened next. However, I reported only about cocos2d-iphone and SpriteBuilderX app.

Here is info about combinations I tested also:

Xcode 10 + 10.14 = BUG
Xcode 10 + 10.13.6 = all ok
Xcode 9( 9.4.1 tested only ) + 10.14 = all ok
Xcode 9( all versions ) + 10.13.6 = all ok

stevetranby · 2018-10-02T11:51:52Z

@KAMIKAZEUA yeah XCode10+Mojave specific issue. Works fine without hack on XCode10+HighSierra. Probably a bug by Apple. Strange for sure.
(I edited my prev. response to say "hack" instead of "fix", heh)

Volodymyr-13 · 2018-10-02T11:52:51Z

Thanks. Well, for now I can use Xcode 9 :) I hope Apple will take a look at my bug report and fix this in new Xcode. Also, I tested on 10.1 beta - same.

Volodar · 2018-10-08T06:41:29Z

I think I was able to hack around this issue following other's advice that the context needs to be updated. If you haven't already got it working, let me know if this works for you and if you have any thoughts.

Thanks!

Volodymyr-13 · 2018-10-12T19:00:20Z

My bug(mentioned before) closed as duplicate, I was not first :) who reported that.
So waiting for some new version of Xcode. Looks like problem in it, but I'm thinking that this could be also Mojave. Anyway, best what I can do is keep updated both.

stevetranby · 2018-10-24T20:11:27Z

Besides wrapping this in a #if XC10+10.14 you can also move the update call hack into its own loop that is only called a finite 2+ times (it seems 2 is enough).

for 3 times { do hack and normal main loop and events stuff }
while { original normal main loop and events stuff w/out hack }

Volodymyr-13 · 2018-10-25T08:33:52Z

With this current fix, I’m still seeing shuttering, but no black screen.

stevetranby · 2018-10-29T11:33:03Z

Yeah, looks like Apple broke VSYNC as well in the 10.14 + XCode10's OpenGL framework.
glfw/glfw#1337

SDL maintainer has been posting on Mojave issues as well.
https://twitter.com/icculus/status/1047935131292450816

Volodymyr-13 · 2018-10-29T11:37:18Z

Ahh, I see now, Apple will kill OpenGL, thats for sure Metal is a new future 🤘

Volodymyr-13 · 2018-10-30T21:32:58Z

Just tested:
Xcode 10 + 10.14.1 = BUG
Xcode 10.1 + 10.14.1 = BUG

~~No fixes from Apple and my bug report is not closed, so this issue hasn't been fixed~~

Got final update from Apple: this should be fixed in 10.14.2

mars3142 · 2018-11-02T09:05:46Z

This is fixed in 10.14.2. I just installed the Developer Beta (10.14.2 Beta (18C31g)) and because of that, the issue can be closed.

stevetranby · 2018-11-06T01:38:47Z

Blank screen is fixed, but it appears stuttering (and I believe vsync not enabled) is still present with a simple MoveBy animation. Maybe a new PR should be opened?

stevetranby · 2018-11-06T01:39:52Z

Also, it is still in beta so while I'm sure it will continue working, probably should confirm after official release.

drelaptop · 2018-11-06T01:40:43Z

Both are related, I can reopen this issue, and modify the title.

Volodymyr-13 · 2018-11-06T12:57:41Z

and I believe vsync not enabled) is still present with a simple MoveBy animation.

@stevetranby so it's implemented in cocos2d-x or due to some bug it's not working?

stevetranby · 2018-11-06T23:42:07Z

@KAMIKAZEUA I'll try to download Xcode 9 and see if I can confirm with real numbers that it runs at 60 fps normally, but 59-65fps on Mojave w/usleep in main loop (see jerky MoveBy, and I'm sure any other per-frame changes), and finally 200-600fps (smooth, but high CPU) on Mojave w/out usleep.

Bilalmirza · 2019-01-10T07:48:39Z

@stevetranby is the stuttering fixed? or do I need to apply some changes.

Bilalmirza · 2019-01-10T08:07:10Z

So I updated to 10.14.2 the black screen issue is fixed. But the performance has dropped quite a bit.
besides the unstable fps. Even when the fps is stable there is a lot of stuttering. What do you guys suggest I do?

stevetranby · 2019-01-10T22:28:57Z

This is a GLFW issue. Either replace with a custom source version, or wait until it's fixed in GLFW's master and then also added into a future release that Cocos2d will upgrade to.

For now you can try to use XCode 9.x or revert back to High Sierra.

It's been "solved" by the SDL team, and shouldn't be much work, but currently still hasn't been applied to GLFW's code base.
glfw/glfw#1337 (comment)

Bilalmirza · 2019-01-11T06:05:14Z

Yeah i think it will be available with glfw 3.3

stevetranby · 2019-04-01T16:02:51Z

Looks like it's fixed as of MacOS 10.14.4+ with XCode 10.2+.
(not sure if it was fixed in the OS or XCode/SDKs)

This can now be closed and @drelaptop or @minggo should revert the "hack" that was committed:

refs:

Vsync doesn't work on macOS 10.14 (Mojave) glfw/glfw#1337 (comment)

drelaptop added the platform:mac label Sep 29, 2018

drelaptop added this to the 3.18 milestone Sep 29, 2018

drelaptop self-assigned this Sep 29, 2018

drelaptop mentioned this issue Oct 7, 2018

a workaround to fix black screen on macOS 10.14 #19090

Merged

drelaptop changed the title ~~Stuttering movement and black screen on macOS 10.14 and Cocos2d-x 3.17~~ Stuttering movement and black screen on macOS 10.14 & Xcode 10 Oct 15, 2018

drelaptop added the confirmed label Nov 6, 2018

drelaptop closed this as completed Nov 6, 2018

drelaptop reopened this Nov 6, 2018

drelaptop added the unconfirmed label Nov 6, 2018

ofZach mentioned this issue Nov 9, 2018

General issue for other problems with xcode 10 / macos 10.14 openframeworks/openFrameworks#6149

Closed

drelaptop removed the confirmed label Nov 12, 2018

drelaptop modified the milestones: 3.17.1, next Nov 12, 2018

slmjkdbtl mentioned this issue Nov 25, 2018

Occasional blank window on OSX 10.14 liballeg/allegro5#960

Closed

minggo closed this as completed Apr 30, 2019

follower mentioned this issue Oct 28, 2019

Reconsider need for macOS 10.14-specific DisplayLink vsync workaround? godotengine/godot#33125

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Stuttering movement and black screen on macOS 10.14 & Xcode 10 #19080

Stuttering movement and black screen on macOS 10.14 & Xcode 10 #19080

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Stuttering movement and black screen on macOS 10.14 & Xcode 10 #19080

Stuttering movement and black screen on macOS 10.14 & Xcode 10 #19080

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