Problem with displaying windows in OS X

[BrutPitt]

Version/Branch of Dear ImGui:

1.66 WIP (actual master 50c43d1)
(No problem with 1.66 version before of ImguiDragFlags in DragBehavior: I refer to the change I remember)

Back-end file/Renderer/OS:

Back-ends: imgui_impl_GLFW.cpp + imgui_impl_opengl3.cpp
Renderer: OpenGL (for now tested only with AMD RX 480)
OS: OSX 10.14 (no problem Linux and Window)

My Issue/Question:
The contents of the window, "disappear": is simplest to view it on the animate gif, attached.
It seems almost a "viewports" problem, though I'm not using that feature (in that circumstance)
Is only the visualization: widgets work even if they are not displayed

This issue appear only in OSX (tested only on 10.14, and only on RX 480).
No problem in Linux and Windows

I tested also the last "viewports" release: same problem.
In that circumstance the window that leaves the main viewport remains "always" in the same condition in which it was just before leaving the main viewport (e.g. partially drawn) , and it stays in that condition, in any position on the desktop.
The "viewports" release works fine in Windows, not yet tested in Linux.

Screenshots/Video

My application

Same behavior also with a simplest application that I use for test/develop my widgets, with imgui_demo inside:

Thanks,
Michele

[ocornut]

Hello,

Looks like we possible broke something with:
f52f0a5

Could you tell what are the value of the two new variables added?

[BrutPitt]

Ciao.
It could actually be this!
OS X supports only OpenGL 4.1 (OpenGL have been deprecated in OS X 10.14)
I try it

[BrutPitt]

clip_origin_lower_left = 0 -> always
last_clip_origin = 1 -> always

Used printf

[BrutPitt]

Adding...

If I force:
glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
(selected with clip_origin_lower_left == true)

Instead of:
glScissor((int)clip_rect.x, (int)clip_rect.y, (int)clip_rect.z, (int)clip_rect.w);
(selected with clip_origin_lower_left == false)

All works fine.

Edit:
And more...

It seems only a OS X problem: not of openGL 4.5.
I tested it forcing a 4.1 GL context in Windows and Linux and works fine.

[ocornut]

Thanks for your feedback.
I should have pushed a fix now, could you confirm it is working out for you?

[BrutPitt]

Yes, I confirm that it works: there seems to be no more problems.
Thank you