Using DirectX by default on Windows?

[Graph]

I was wondering if there's a variable I can set somewhere to make a Ren'py game use DirectX instead of OpenGL by default when running on Windows OS?

When given the choice, I find that games use 30% more memory and sometimes run choppier on OpenGL, not to mention the machine-specific nature of updating OpenGL. At the least I'd like my VN to start off using DirectX when making test builds.

[PyTom]

There isn't a way to do this without disabling OpenGL and the software renderer entirely.

[nyaatrap]

I was wondering if there's a variable I can set somewhere to make a Ren'py game use DirectX instead of OpenGL by default when running on Windows OS?

When given the choice, I find that games use 30% more memory and sometimes run choppier on OpenGL, not to mention the machine-specific nature of updating OpenGL. At the least I'd like my VN to start off using DirectX when making test builds.

I support this suggestion, since ren'py has a memory leak problem in its hardware acceleration. Playing games several hours without minimize windows leads to crash an application (people actually plays more than 10 hours long my game). When using DirectX, it allows 1.5 times higher image caches.

[PyTom]

I haven't heard about such a memory leak. Is it repeatable? If so, how do we repeat it? Does the memory increase while Ren'Py is idle, or only when it's being played? Does it only occur with hardware rendering, or does it occur with the software renderer as well?

I'm not going to hold up 6.16.2 for it, but I'd rather fix the leak, as opposed to trying to work around it.

[nyaatrap]

I got many report about memory crash bug on DMC when playing very long hours. It looks memory leaks when rendering a new image (my game has more than 1GB png images), only with hardware acceleration turns on. Memo of RAM consumption playing DMC setting config.image_cache = 8 with Intel HD graphics (from report, it looks memory leaking is also occurred on OSX with Nvidia):

Softwhere: startup = 52mb, playing 3min = 140mb, playing 15min = 155mb, after minimized window = 155mb.
DirectX: startup = 78mb, playing 1 min = 248mb, playing 5min = 320mb, after minimized window = 180mb
OpenGL: startup = 118mb, playing 1min = 347mb, playing 5min = 500mb, after minimized window = 190mb

I don't know applications which releases memory cache when minimizing a window other than ren'py.