DirectX9 doesn't play nicely with alt-tab. It never has in 20 years years. Driver vendors are the ones who implement OpenGL, and OpenGL2 is old enough that driver vendors don't pay it much thought.
With newer libraries, developers often remove hacks for old APIs in favor of doing things properly for newer rendering APIs. So, by upgrading Ogre3d from ~2015 to 2024 libraries, many of the hack fixes for DirectX9 were removed.
So there isn't much I can do. It's all third-party code and has nothing to do with anything I've written. As mentioned in the library update bounty, it will cause more stability but unexpected behaviors. This is how the standards for DirectX9 are and the current state of OpenGL in modern Windows with bog standard Ogre window creation systems.
I recommend using OpenGL in windowed mode. Bounty 96 will likely resolve the OpenGL2 fullscreen alt-tab issue. Bounty 147 may play better with Alt-Tab in Windows.
With newer libraries, developers often remove hacks for old APIs in favor of doing things properly for newer rendering APIs. So, by upgrading Ogre3d from ~2015 to 2024 libraries, many of the hack fixes for DirectX9 were removed.
So there isn't much I can do. It's all third-party code and has nothing to do with anything I've written. As mentioned in the library update bounty, it will cause more stability but unexpected behaviors. This is how the standards for DirectX9 are and the current state of OpenGL in modern Windows with bog standard Ogre window creation systems.
I recommend using OpenGL in windowed mode. Bounty 96 will likely resolve the OpenGL2 fullscreen alt-tab issue. Bounty 147 may play better with Alt-Tab in Windows.
"great writers are indecent people, they live unfairly, saving the best part for paper.
good human beings save the world, so that bastards like me can keep creating art, become immortal.
if you read this after I am dead it means I made it." ― Charles Bukowski
good human beings save the world, so that bastards like me can keep creating art, become immortal.
if you read this after I am dead it means I made it." ― Charles Bukowski