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Add SDL_RenderSetVSync()

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Currently, if an application wants to toggle VSync, they'd have to tear
down the renderer and recreate it. This patch fixes that by letting
applications call SDL_RenderSetVSync().

This is the same as the patch in #3673, except it applies to all
renderers (including PSP, even thought it seems that the VSync flag is
disabled for that renderer). Furthermore, the renderer flags also change
as well, which #3673 didn't do. It is also an API instead of using hint
callbacks (which could be potentially dangerous).

Closes #3673.
This commit is contained in:
Misa 2021-03-07 15:20:45 -08:00 • committed by Sam Lantinga
parent b2504b5da6
commit 4549769d7d
13 changed files with 168 additions and 0 deletions
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16
src/render/direct3d11/SDL_render_d3d11.c
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@ -2598,6 +2598,21 @@ D3D11_RenderPresent(SDL_Renderer * renderer)
}
}
#if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
/* no-op. */
#else
static int
D3D11_SetVSync(SDL_Renderer * renderer, const int vsync)
{
if (vsync) {
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
} else {
renderer->info.flags &= ~SDL_RENDERER_PRESENTVSYNC;
}
return 0;
}
#endif
SDL_Renderer *
D3D11_CreateRenderer(SDL_Window * window, Uint32 flags)
{
@ -2666,6 +2681,7 @@ D3D11_CreateRenderer(SDL_Window * window, Uint32 flags)
if ((flags & SDL_RENDERER_PRESENTVSYNC)) {
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
}
renderer->SetVSync = D3D11_SetVSync;
#endif
/* HACK: make sure the SDL_Renderer references the SDL_Window data now, in