Hi,
I've been working on an app that I want to be available for older MacOS versions. On MacOS 10.10, this very simple code causes the window to totally freeze up (MacOS shows the spinner icon) when the mouse hovers over it. As soon as the mouse leaves the window, it resumes rendering.
int main() {
sf::RenderWindow window(sf::VideoMode(800,600), "Test Window");
while (window.isOpen()) {
sf::Event event;
while (window.pollEvent(event)) {
if (event.type == sf::Event::Closed)
window.close();
}
window.clear(sf::Color::Black);
sf::CircleShape circ(50);
circ.setOutlineColor(sf::Color::Red);
circ.setOutlineThickness(10);
circ.setFillColor(sf::Color::Blue);
circ.setPosition(50, 50);
window.draw(circ);
window.display();
}
return 0;
}
Here is the MacOS spin report:
Date/Time: 2020-02-04 07:48:19 -0800
OS Version: 10.10.5 (Build 14F27)
Architecture: x86_64
Report Version: 21
Command: Zivix Graphics Playground
Path: /Users/USER/Downloads/ZivixGraphicsPlayground-30.app/Contents/MacOS/ZivixGraphicsPlayground
Version: 
()
PID: 908
Event: timeout-lite
Duration: 10.00s (process was unresponsive for 2 seconds before sampling)
Steps: 101 (100ms sampling interval)
Hardware model: MacBookPro11,3
Active cpus: 4
Heaviest stack for the main thread of the target process:
101 start + 1 (libdyld.dylib + 13769) [0x7fff930fc5c9]
101 main + 685 (ZivixGraphicsPlayground + 19197) [0x100114afd]
101 sf::Window::display() + 60 (ZivixGraphicsPlayground + 626988) [0x1001a912c]
101 sf::priv::SFContext::display() + 33 (ZivixGraphicsPlayground + 555041) [0x100197821]
101 -[NSOpenGLContext flushBuffer] + 27 (AppKit + 3354155) [0x7fff99a52e2b]
101 CGLFlushDrawable + 66 (OpenGL + 53178) [0x7fff921fefba]
101 glSwap_Exec + 97 (GLEngine + 119089) [0x7fff98c3d131]
101 glsFlushDrawBufferIsBackingStore + 307 (GLRendererFloat + 76058) [0x7fff9819e91a]
101 CGSLockWindowBits + 34 (CoreGraphics + 1337281) [0x7fff8ec237c1]
101 CGSLockWindowRectBits + 72 (CoreGraphics + 1336943) [0x7fff8ec2366f]
101 lock_window_backing + 910 (CoreGraphics + 279119) [0x7fff8eb2124f]
101 CGSWindowSynchronizeBacking + 40 (CoreGraphics + 279926) [0x7fff8eb21576]
101 _CGSSynchronizeWindowBackingStore + 110 (CoreGraphics + 536520) [0x7fff8eb5ffc8]
101 mach_msg_trap + 10 (libsystem_kernel.dylib + 70878) [0x7fff8d41d4de]
*101 ipc_mqueue_receive_continue + 0 (kernel + 1144832) [0xffffff8000317800]
It seems to have something to do with NSOpenGLContext::flushBuffer, though my googling didn't turn up anything very helpful.
Any suggestions are much appreciated!
Thanks,
Jon
