I’m wondering why this scene renders completely differently on the Mac than it does on Windows. It’s much darker in OS X. 4.1 fixes the skylight not working on OS X but I wonder if it’s due to a lack of eye adaptation on OS X or something else.
Just a note that OS X use OpenGL renderer, you can turn on OpenGL renderer in Windows by starting editor with -opengl option or -opengl4
thanks. But I think the application should do its best to match these for developers who intend to target Windows with DX and Mac with OpenGL. I’ve tried simple tweaks to get the same balance but nothing works.
Just trying to point wheres source of the difference 
I also noticed this even before 4.1 on the Mac, and the scene brightness depended whether I used -opengl or -opengl4 switch.
opengl 4.0 is equivalent of DX11, i suspect that -opengl is older version equivalent to DX10 features
Any solutions for this? Just opened a scene in 4.5 and it looks exactly the same as the examples above.
im having the same issue. has anyone found a solution?
This might be a long shot, but in Linux with had a problem with GL_FRAMEBUFFER_SRGB which relates to sRGB conversion, where we had to disable to get it to look normal and not washed-off.
This problem appears to be the opposite, being darker so perhaps it is not converting to sRGB space…so if you don’t mind some hacking with the code, look at Engine/Source/Runtime/OpenGLDrv/Private/Mac/OpenGLMac.cpp for some clues.