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Add a hint for D3D9Ex to avoid having to choose at compile-time

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This commit is contained in:
Cameron Gutman 2021-01-02 14:45:15 -06:00
parent 59594a7891
commit 6cbd4417f0
2 changed files with 33 additions and 13 deletions
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20
include/SDL_hints.h
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@ -1238,6 +1238,26 @@ extern "C" {
*/
#define SDL_HINT_WINDOWS_FORCE_SEMAPHORE_KERNEL "SDL_WINDOWS_FORCE_SEMAPHORE_KERNEL"
/**
* \brief Use the D3D9Ex API introduced in Windows Vista, instead of normal D3D9.
* Direct3D 9Ex contains changes to state management that can eliminate device
* loss errors during scenarios like Alt+Tab or UAC prompts. D3D9Ex may require
* some changes to your application to cope with the new behavior, so this
* is disabled by default.
*
* This hint must be set before initializing the video subsystem.
*
* For more information on Direct3D 9Ex, see:
* - https://docs.microsoft.com/en-us/windows/win32/direct3darticles/graphics-apis-in-windows-vista#direct3d-9ex
* - https://docs.microsoft.com/en-us/windows/win32/direct3darticles/direct3d-9ex-improvements
*
* This variable can be set to the following values:
* "0" - Use the original Direct3D 9 API (default)
* "1" - Use the Direct3D 9Ex API on Vista and later (and fall back if D3D9Ex is unavailable)
*
*/
#define SDL_HINT_WINDOWS_USE_D3D9EX "SDL_WINDOWS_USE_D3D9EX"
/**
* \brief Tell SDL which Dispmanx layer to use on a Raspberry PI
*

4
src/video/windows/SDL_windowsvideo.c
View File

@ -257,7 +257,7 @@ D3D_LoadDLL(void **pD3DDLL, IDirect3D9 **pDirect3D9Interface)
typedef IDirect3D9 *(WINAPI *Direct3DCreate9_t) (UINT SDKVersion);
Direct3DCreate9_t Direct3DCreate9Func;
#ifdef USE_D3D9EX
if (SDL_GetHintBoolean(SDL_HINT_WINDOWS_USE_D3D9EX, SDL_FALSE)) {
typedef HRESULT(WINAPI* Direct3DCreate9Ex_t)(UINT SDKVersion, IDirect3D9Ex** ppD3D);
Direct3DCreate9Ex_t Direct3DCreate9ExFunc;
@ -274,7 +274,7 @@ D3D_LoadDLL(void **pD3DDLL, IDirect3D9 **pDirect3D9Interface)
}
}
}
#endif /* USE_D3D9EX */
}
Direct3DCreate9Func = (Direct3DCreate9_t)SDL_LoadFunction(*pD3DDLL, "Direct3DCreate9");
if (Direct3DCreate9Func) {