[SDL3] On macOS SDL_WINDOW_TRANSPARENT hides window's border

[Nelonn]

When I using SDL_WINDOW_TRANSPARENT flag on window on macOS (14.7.1) framebuffer becomes transparent, but for unknown reason it disables system border.
With SDL_WINDOW_TRANSPARENT:

Without SDL_WINDOW_TRANSPARENT:

[pipiwoaini]

你可以试试在Cocoa_CreateWindow里把
if (window->flags & SDL_WINDOW_TRANSPARENT) {
nswindow.opaque = NO;
nswindow.hasShadow = NO;
nswindow.backgroundColor = [NSColor clearColor];
}
改为
if (window->flags & SDL_WINDOW_TRANSPARENT) {
nswindow.opaque = NO;
nswindow.hasShadow = YES;
nswindow.backgroundColor = [NSColor clearColor];
}

[Nelonn]

你可以试试在Cocoa_CreateWindow里把 if (window->flags & SDL_WINDOW_TRANSPARENT) { nswindow.opaque = NO; nswindow.hasShadow = NO; nswindow.backgroundColor = [NSColor clearColor]; } 改为 if (window->flags & SDL_WINDOW_TRANSPARENT) { nswindow.opaque = NO; nswindow.hasShadow = YES; nswindow.backgroundColor = [NSColor clearColor]; }

It creates only one pixel black border