Fix D3D11 build

Author: flibitijibibo

src/FNA3D_Driver_D3D11.c

@@ -1072,7 +1072,18 @@ static void D3D11_DestroyDevice(FNA3D_Device *device)
 		swapchainData = renderer->swapchainDatas[i];
 		ID3D11RenderTargetView_Release(swapchainData->swapchainRTView);
 		IDXGISwapChain_Release(swapchainData->swapchain);
-		SDL_ClearProperty(SDL_GetWindowProperties(swapchainData->windowHandle), WINDOW_SWAPCHAIN_DATA);
+#if SDL_MAJOR_VERSION >= 3
+		SDL_ClearProperty(
+			SDL_GetWindowProperties(swapchainData->windowHandle),
+			WINDOW_SWAPCHAIN_DATA
+		);
+#else
+		SDL_SetWindowData(
+			(SDL_Window*) swapchainData->windowHandle,
+			WINDOW_SWAPCHAIN_DATA,
+			NULL
+		);
+#endif
 		SDL_free(renderer->swapchainDatas[i]);
 	}
 	SDL_free(renderer->swapchainDatas);
@@ -1533,11 +1544,18 @@ static void D3D11_SwapBuffers(
 		}
 	}
 
+#if SDL_MAJOR_VERSION >= 3
 	swapchainData = (D3D11SwapchainData*) SDL_GetProperty(
 		SDL_GetWindowProperties(overrideWindowHandle),
 		WINDOW_SWAPCHAIN_DATA,
 		NULL
 	);
+#else
+	swapchainData = (D3D11SwapchainData*) SDL_GetWindowData(
+		(SDL_Window*) overrideWindowHandle,
+		WINDOW_SWAPCHAIN_DATA
+	);
+#endif
 	if (swapchainData == NULL)
 	{
 		D3D11_INTERNAL_CreateSwapChain(
@@ -1546,11 +1564,18 @@ static void D3D11_SwapBuffers(
 			(SDL_Window*) overrideWindowHandle,
 			NULL
 		);
+#if SDL_MAJOR_VERSION >= 3
 		swapchainData = (D3D11SwapchainData*) SDL_GetProperty(
 			SDL_GetWindowProperties(overrideWindowHandle),
 			WINDOW_SWAPCHAIN_DATA,
 			NULL
 		);
+#else
+		swapchainData = (D3D11SwapchainData*) SDL_GetWindowData(
+			(SDL_Window*) overrideWindowHandle,
+			WINDOW_SWAPCHAIN_DATA
+		);
+#endif
 		D3D11_INTERNAL_UpdateSwapchainRT(
 			renderer,
 			swapchainData,
@@ -2548,7 +2573,18 @@ static void D3D11_INTERNAL_CreateSwapChain(
 #ifdef FNA3D_DXVK_NATIVE
 	dxgiHandle = (HWND) windowHandle;
 #else
-	dxgiHandle = (HWND) SDL_GetProperty(SDL_GetWindowProperties(windowHandle), SDL_PROP_WINDOW_WIN32_HWND_POINTER, NULL);
+#if SDL_MAJOR_VERSION >= 3
+	dxgiHandle = (HWND) SDL_GetProperty(
+		SDL_GetWindowProperties(windowHandle),
+		SDL_PROP_WINDOW_WIN32_HWND_POINTER,
+		NULL
+	);
+#else
+	SDL_SysWMinfo info;
+	SDL_VERSION(&info.version);
+	SDL_GetWindowWMInfo((SDL_Window*) windowHandle, &info);
+	dxgiHandle = info.info.win.window;
+#endif
 #endif /* FNA3D_DXVK_NATIVE */
 
 	/* Initialize swapchain buffer descriptor */
@@ -2676,7 +2712,11 @@ static void D3D11_INTERNAL_CreateSwapChain(
 	swapchainData->windowHandle = windowHandle;
 	swapchainData->swapchainRTView = NULL;
 	swapchainData->format = backBufferFormat;
+#if SDL_MAJOR_VERSION >= 3
 	SDL_SetProperty(SDL_GetWindowProperties(windowHandle), WINDOW_SWAPCHAIN_DATA, swapchainData);
+#else
+	SDL_SetWindowData((SDL_Window*) windowHandle, WINDOW_SWAPCHAIN_DATA, swapchainData);
+#endif
 	if (growSwapchains)
 	{
 		if (renderer->swapchainDataCount >= renderer->swapchainDataCapacity)
@@ -2771,11 +2811,18 @@ static void D3D11_INTERNAL_CreateBackbuffer(
 	/* Create or update the swapchain */
 	if (parameters->deviceWindowHandle != NULL)
 	{
+#if SDL_MAJOR_VERSION >= 3
 		swapchainData = (D3D11SwapchainData*) SDL_GetProperty(
 			SDL_GetWindowProperties(parameters->deviceWindowHandle),
 			WINDOW_SWAPCHAIN_DATA,
 			NULL
 		);
+#else
+		swapchainData = (D3D11SwapchainData*) SDL_GetWindowData(
+			(SDL_Window*) parameters->deviceWindowHandle,
+			WINDOW_SWAPCHAIN_DATA
+		);
+#endif
 		if (swapchainData == NULL)
 		{
 			D3D11_INTERNAL_CreateSwapChain(
@@ -2784,11 +2831,18 @@ static void D3D11_INTERNAL_CreateBackbuffer(
 				parameters->deviceWindowHandle,
 				NULL
 			);
+#if SDL_MAJOR_VERSION >= 3
 			swapchainData = (D3D11SwapchainData*) SDL_GetProperty(
 				SDL_GetWindowProperties(parameters->deviceWindowHandle),
 				WINDOW_SWAPCHAIN_DATA,
 				NULL
 			);
+#else
+			swapchainData = (D3D11SwapchainData*) SDL_GetWindowData(
+				(SDL_Window*) parameters->deviceWindowHandle,
+				WINDOW_SWAPCHAIN_DATA
+			);
+#endif
 		}
 		else
 		{
@@ -5214,6 +5268,9 @@ static uint8_t D3D11_PrepareWindowAttributes(uint32_t *flags)
 	}
 
 	/* No window flags required */
+#if SDL_MAJOR_VERSION < 3
+	SDL_SetHint(SDL_HINT_VIDEO_EXTERNAL_CONTEXT, "1");
+#endif
 #ifdef FNA3D_DXVK_NATIVE
 	/* ... unless this is DXVK */
 	*flags = SDL_WINDOW_VULKAN;