kc3-lang/SDL/src/video/windows/SDL_windowsvideo.c

Branch - branch -v2.28

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• Hash : 3f1fd5ab
  Author :
  Date : 2023-05-23T10:59:03
  

  Updated source to match SDL function prototype style

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• src/video/windows/SDL_windowsvideo.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_WINDOWS
  
  #include "SDL_main.h"
  #include "SDL_video.h"
  #include "SDL_hints.h"
  #include "SDL_mouse.h"
  #include "SDL_system.h"
  #include "../SDL_sysvideo.h"
  #include "../SDL_pixels_c.h"
  #include "../../SDL_hints_c.h"
  
  #include "SDL_windowsvideo.h"
  #include "SDL_windowsframebuffer.h"
  #include "SDL_windowsshape.h"
  #include "SDL_windowsvulkan.h"
  
  /* #define HIGHDPI_DEBUG */
  
  /* Initialization/Query functions */
  static int WIN_VideoInit(_THIS);
  static void WIN_VideoQuit(_THIS);
  
  /* Hints */
  SDL_bool g_WindowsEnableMessageLoop = SDL_TRUE;
  SDL_bool g_WindowsEnableMenuMnemonics = SDL_FALSE;
  SDL_bool g_WindowFrameUsableWhileCursorHidden = SDL_TRUE;
  
  static void SDLCALL UpdateWindowsEnableMessageLoop(void *userdata, const char *name, const char *oldValue, const char *newValue)
  {
      g_WindowsEnableMessageLoop = SDL_GetStringBoolean(newValue, SDL_TRUE);
  }
  
  static void SDLCALL UpdateWindowsEnableMenuMnemonics(void *userdata, const char *name, const char *oldValue, const char *newValue)
  {
      g_WindowsEnableMenuMnemonics = SDL_GetStringBoolean(newValue, SDL_FALSE);
  }
  
  static void SDLCALL UpdateWindowFrameUsableWhileCursorHidden(void *userdata, const char *name, const char *oldValue, const char *newValue)
  {
      g_WindowFrameUsableWhileCursorHidden = SDL_GetStringBoolean(newValue, SDL_TRUE);
  }
  
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
  static void WIN_SuspendScreenSaver(_THIS)
  {
      if (_this->suspend_screensaver) {
          SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);
      } else {
          SetThreadExecutionState(ES_CONTINUOUS);
      }
  }
  #endif
  
  #if defined(__XBOXONE__) || defined(__XBOXSERIES__)
  extern void D3D12_XBOX_GetResolution(Uint32 *width, Uint32 *height);
  #endif
  
  /* Windows driver bootstrap functions */
  
  static void WIN_DeleteDevice(SDL_VideoDevice *device)
  {
      SDL_VideoData *data = (SDL_VideoData *)device->driverdata;
  
      SDL_UnregisterApp();
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      if (data->userDLL) {
          SDL_UnloadObject(data->userDLL);
      }
      if (data->shcoreDLL) {
          SDL_UnloadObject(data->shcoreDLL);
      }
  #endif
      if (device->wakeup_lock) {
          SDL_DestroyMutex(device->wakeup_lock);
      }
      SDL_free(device->driverdata);
      SDL_free(device);
  }
  
  static SDL_VideoDevice *WIN_CreateDevice(void)
  {
      SDL_VideoDevice *device;
      SDL_VideoData *data;
  
      SDL_RegisterApp(NULL, 0, NULL);
  
      /* Initialize all variables that we clean on shutdown */
      device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
      if (device) {
          data = (struct SDL_VideoData *)SDL_calloc(1, sizeof(SDL_VideoData));
      } else {
          data = NULL;
      }
      if (!data) {
          SDL_free(device);
          SDL_OutOfMemory();
          return NULL;
      }
      device->driverdata = data;
      device->wakeup_lock = SDL_CreateMutex();
  
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      data->userDLL = SDL_LoadObject("USER32.DLL");
      if (data->userDLL) {
          /* *INDENT-OFF* */ /* clang-format off */
          data->CloseTouchInputHandle = (BOOL (WINAPI *)(HTOUCHINPUT))SDL_LoadFunction(data->userDLL, "CloseTouchInputHandle");
          data->GetTouchInputInfo = (BOOL (WINAPI *)(HTOUCHINPUT, UINT, PTOUCHINPUT, int)) SDL_LoadFunction(data->userDLL, "GetTouchInputInfo");
          data->RegisterTouchWindow = (BOOL (WINAPI *)(HWND, ULONG))SDL_LoadFunction(data->userDLL, "RegisterTouchWindow");
          data->SetProcessDPIAware = (BOOL (WINAPI *)(void))SDL_LoadFunction(data->userDLL, "SetProcessDPIAware");
          data->SetProcessDpiAwarenessContext = (BOOL (WINAPI *)(DPI_AWARENESS_CONTEXT))SDL_LoadFunction(data->userDLL, "SetProcessDpiAwarenessContext");
          data->SetThreadDpiAwarenessContext = (DPI_AWARENESS_CONTEXT (WINAPI *)(DPI_AWARENESS_CONTEXT))SDL_LoadFunction(data->userDLL, "SetThreadDpiAwarenessContext");
          data->GetThreadDpiAwarenessContext = (DPI_AWARENESS_CONTEXT (WINAPI *)(void))SDL_LoadFunction(data->userDLL, "GetThreadDpiAwarenessContext");
          data->GetAwarenessFromDpiAwarenessContext = (DPI_AWARENESS (WINAPI *)(DPI_AWARENESS_CONTEXT))SDL_LoadFunction(data->userDLL, "GetAwarenessFromDpiAwarenessContext");
          data->EnableNonClientDpiScaling = (BOOL (WINAPI *)(HWND))SDL_LoadFunction(data->userDLL, "EnableNonClientDpiScaling");
          data->AdjustWindowRectExForDpi = (BOOL (WINAPI *)(LPRECT, DWORD, BOOL, DWORD, UINT))SDL_LoadFunction(data->userDLL, "AdjustWindowRectExForDpi");
          data->GetDpiForWindow = (UINT (WINAPI *)(HWND))SDL_LoadFunction(data->userDLL, "GetDpiForWindow");
          data->AreDpiAwarenessContextsEqual = (BOOL (WINAPI *)(DPI_AWARENESS_CONTEXT, DPI_AWARENESS_CONTEXT))SDL_LoadFunction(data->userDLL, "AreDpiAwarenessContextsEqual");
          data->IsValidDpiAwarenessContext = (BOOL (WINAPI *)(DPI_AWARENESS_CONTEXT))SDL_LoadFunction(data->userDLL, "IsValidDpiAwarenessContext");
          /* *INDENT-ON* */ /* clang-format on */
      } else {
          SDL_ClearError();
      }
  
      data->shcoreDLL = SDL_LoadObject("SHCORE.DLL");
      if (data->shcoreDLL) {
          /* *INDENT-OFF* */ /* clang-format off */
          data->GetDpiForMonitor = (HRESULT (WINAPI *)(HMONITOR, MONITOR_DPI_TYPE, UINT *, UINT *))SDL_LoadFunction(data->shcoreDLL, "GetDpiForMonitor");
          data->SetProcessDpiAwareness = (HRESULT (WINAPI *)(PROCESS_DPI_AWARENESS))SDL_LoadFunction(data->shcoreDLL, "SetProcessDpiAwareness");
          /* *INDENT-ON* */ /* clang-format on */
      } else {
          SDL_ClearError();
      }
  #endif /* #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__) */
  
      /* Set the function pointers */
      device->VideoInit = WIN_VideoInit;
      device->VideoQuit = WIN_VideoQuit;
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      device->RefreshDisplays = WIN_RefreshDisplays;
      device->GetDisplayBounds = WIN_GetDisplayBounds;
      device->GetDisplayUsableBounds = WIN_GetDisplayUsableBounds;
      device->GetDisplayDPI = WIN_GetDisplayDPI;
      device->GetDisplayModes = WIN_GetDisplayModes;
      device->SetDisplayMode = WIN_SetDisplayMode;
  #endif
      device->PumpEvents = WIN_PumpEvents;
      device->WaitEventTimeout = WIN_WaitEventTimeout;
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      device->SendWakeupEvent = WIN_SendWakeupEvent;
      device->SuspendScreenSaver = WIN_SuspendScreenSaver;
  #endif
  
      device->CreateSDLWindow = WIN_CreateWindow;
      device->CreateSDLWindowFrom = WIN_CreateWindowFrom;
      device->SetWindowTitle = WIN_SetWindowTitle;
      device->SetWindowIcon = WIN_SetWindowIcon;
      device->SetWindowPosition = WIN_SetWindowPosition;
      device->SetWindowSize = WIN_SetWindowSize;
      device->GetWindowBordersSize = WIN_GetWindowBordersSize;
      device->GetWindowSizeInPixels = WIN_GetWindowSizeInPixels;
      device->SetWindowOpacity = WIN_SetWindowOpacity;
      device->ShowWindow = WIN_ShowWindow;
      device->HideWindow = WIN_HideWindow;
      device->RaiseWindow = WIN_RaiseWindow;
      device->MaximizeWindow = WIN_MaximizeWindow;
      device->MinimizeWindow = WIN_MinimizeWindow;
      device->RestoreWindow = WIN_RestoreWindow;
      device->SetWindowBordered = WIN_SetWindowBordered;
      device->SetWindowResizable = WIN_SetWindowResizable;
      device->SetWindowAlwaysOnTop = WIN_SetWindowAlwaysOnTop;
      device->SetWindowFullscreen = WIN_SetWindowFullscreen;
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      device->SetWindowGammaRamp = WIN_SetWindowGammaRamp;
      device->GetWindowICCProfile = WIN_GetWindowICCProfile;
      device->GetWindowGammaRamp = WIN_GetWindowGammaRamp;
      device->SetWindowMouseRect = WIN_SetWindowMouseRect;
      device->SetWindowMouseGrab = WIN_SetWindowMouseGrab;
      device->SetWindowKeyboardGrab = WIN_SetWindowKeyboardGrab;
  #endif
      device->DestroyWindow = WIN_DestroyWindow;
      device->GetWindowWMInfo = WIN_GetWindowWMInfo;
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      device->CreateWindowFramebuffer = WIN_CreateWindowFramebuffer;
      device->UpdateWindowFramebuffer = WIN_UpdateWindowFramebuffer;
      device->DestroyWindowFramebuffer = WIN_DestroyWindowFramebuffer;
      device->OnWindowEnter = WIN_OnWindowEnter;
      device->SetWindowHitTest = WIN_SetWindowHitTest;
      device->AcceptDragAndDrop = WIN_AcceptDragAndDrop;
      device->FlashWindow = WIN_FlashWindow;
  
      device->shape_driver.CreateShaper = Win32_CreateShaper;
      device->shape_driver.SetWindowShape = Win32_SetWindowShape;
      device->shape_driver.ResizeWindowShape = Win32_ResizeWindowShape;
  #endif
  
  #if SDL_VIDEO_OPENGL_WGL
      device->GL_LoadLibrary = WIN_GL_LoadLibrary;
      device->GL_GetProcAddress = WIN_GL_GetProcAddress;
      device->GL_UnloadLibrary = WIN_GL_UnloadLibrary;
      device->GL_CreateContext = WIN_GL_CreateContext;
      device->GL_MakeCurrent = WIN_GL_MakeCurrent;
      device->GL_SetSwapInterval = WIN_GL_SetSwapInterval;
      device->GL_GetSwapInterval = WIN_GL_GetSwapInterval;
      device->GL_SwapWindow = WIN_GL_SwapWindow;
      device->GL_DeleteContext = WIN_GL_DeleteContext;
  #elif SDL_VIDEO_OPENGL_EGL
      /* Use EGL based functions */
      device->GL_LoadLibrary = WIN_GLES_LoadLibrary;
      device->GL_GetProcAddress = WIN_GLES_GetProcAddress;
      device->GL_UnloadLibrary = WIN_GLES_UnloadLibrary;
      device->GL_CreateContext = WIN_GLES_CreateContext;
      device->GL_MakeCurrent = WIN_GLES_MakeCurrent;
      device->GL_SetSwapInterval = WIN_GLES_SetSwapInterval;
      device->GL_GetSwapInterval = WIN_GLES_GetSwapInterval;
      device->GL_SwapWindow = WIN_GLES_SwapWindow;
      device->GL_DeleteContext = WIN_GLES_DeleteContext;
  #endif
  #if SDL_VIDEO_VULKAN
      device->Vulkan_LoadLibrary = WIN_Vulkan_LoadLibrary;
      device->Vulkan_UnloadLibrary = WIN_Vulkan_UnloadLibrary;
      device->Vulkan_GetInstanceExtensions = WIN_Vulkan_GetInstanceExtensions;
      device->Vulkan_CreateSurface = WIN_Vulkan_CreateSurface;
  #endif
  
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      device->StartTextInput = WIN_StartTextInput;
      device->StopTextInput = WIN_StopTextInput;
      device->SetTextInputRect = WIN_SetTextInputRect;
      device->ClearComposition = WIN_ClearComposition;
      device->IsTextInputShown = WIN_IsTextInputShown;
  
      device->SetClipboardText = WIN_SetClipboardText;
      device->GetClipboardText = WIN_GetClipboardText;
      device->HasClipboardText = WIN_HasClipboardText;
  #endif
  
      device->free = WIN_DeleteDevice;
  
      return device;
  }
  
  VideoBootStrap WINDOWS_bootstrap = {
      "windows", "SDL Windows video driver", WIN_CreateDevice
  };
  
  static BOOL WIN_DeclareDPIAwareUnaware(_THIS)
  {
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      if (data->SetProcessDpiAwarenessContext) {
          return data->SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_UNAWARE);
      } else if (data->SetProcessDpiAwareness) {
          /* Windows 8.1 */
          return SUCCEEDED(data->SetProcessDpiAwareness(PROCESS_DPI_UNAWARE));
      }
  #endif
      return FALSE;
  }
  
  static BOOL WIN_DeclareDPIAwareSystem(_THIS)
  {
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      if (data->SetProcessDpiAwarenessContext) {
          /* Windows 10, version 1607 */
          return data->SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_SYSTEM_AWARE);
      } else if (data->SetProcessDpiAwareness) {
          /* Windows 8.1 */
          return SUCCEEDED(data->SetProcessDpiAwareness(PROCESS_SYSTEM_DPI_AWARE));
      } else if (data->SetProcessDPIAware) {
          /* Windows Vista */
          return data->SetProcessDPIAware();
      }
  #endif
      return FALSE;
  }
  
  static BOOL WIN_DeclareDPIAwarePerMonitor(_THIS)
  {
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      if (data->SetProcessDpiAwarenessContext) {
          /* Windows 10, version 1607 */
          return data->SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE);
      } else if (data->SetProcessDpiAwareness) {
          /* Windows 8.1 */
          return SUCCEEDED(data->SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE));
      } else {
          /* Older OS: fall back to system DPI aware */
          return WIN_DeclareDPIAwareSystem(_this);
      }
  #endif
      return FALSE;
  }
  
  static BOOL WIN_DeclareDPIAwarePerMonitorV2(_THIS)
  {
  #if defined(__XBOXONE__) || defined(__XBOXSERIES__)
      return FALSE;
  #else
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      /* Declare DPI aware (may have been done in external code or a manifest, as well) */
      if (data->SetProcessDpiAwarenessContext) {
          /* Windows 10, version 1607 */
  
          /* NOTE: SetThreadDpiAwarenessContext doesn't work here with OpenGL - the OpenGL contents
             end up still getting OS scaled. (tested on Windows 10 21H1 19043.1348, NVIDIA 496.49)
  
             NOTE: Enabling DPI awareness through Windows Explorer
             (right click .exe -> Properties -> Compatibility -> High DPI Settings ->
             check "Override high DPI Scaling behaviour", select Application) gives
             a DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE context (at least on Windows 10 21H1), and
             setting DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 will fail.
  
             NOTE: Entering exclusive fullscreen in a DPI_AWARENESS_CONTEXT_UNAWARE process
             appears to cause Windows to change the .exe manifest to DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE
             on future launches. This means attempting to use DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2
             will fail in the future until you manually clear the "Override high DPI Scaling behaviour"
             setting in Windows Explorer (tested on Windows 10 21H2).
           */
          if (data->SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2)) {
              return TRUE;
          } else {
              return WIN_DeclareDPIAwarePerMonitor(_this);
          }
      } else {
          /* Older OS: fall back to per-monitor (or system) */
          return WIN_DeclareDPIAwarePerMonitor(_this);
      }
  #endif
  }
  
  #ifdef HIGHDPI_DEBUG
  static const char *WIN_GetDPIAwareness(_THIS)
  {
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      if (data->GetThreadDpiAwarenessContext && data->AreDpiAwarenessContextsEqual) {
          DPI_AWARENESS_CONTEXT context = data->GetThreadDpiAwarenessContext();
  
          if (data->AreDpiAwarenessContextsEqual(context, DPI_AWARENESS_CONTEXT_UNAWARE)) {
              return "unaware";
          } else if (data->AreDpiAwarenessContextsEqual(context, DPI_AWARENESS_CONTEXT_SYSTEM_AWARE)) {
              return "system";
          } else if (data->AreDpiAwarenessContextsEqual(context, DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE)) {
              return "permonitor";
          } else if (data->AreDpiAwarenessContextsEqual(context, DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2)) {
              return "permonitorv2";
          } else if (data->AreDpiAwarenessContextsEqual(context, DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED)) {
              return "unaware_gdiscaled";
          }
      }
  
      return "";
  }
  #endif
  
  static void WIN_InitDPIAwareness(_THIS)
  {
      const char *hint = SDL_GetHint(SDL_HINT_WINDOWS_DPI_AWARENESS);
  
      if (hint != NULL) {
          if (SDL_strcmp(hint, "permonitorv2") == 0) {
              WIN_DeclareDPIAwarePerMonitorV2(_this);
          } else if (SDL_strcmp(hint, "permonitor") == 0) {
              WIN_DeclareDPIAwarePerMonitor(_this);
          } else if (SDL_strcmp(hint, "system") == 0) {
              WIN_DeclareDPIAwareSystem(_this);
          } else if (SDL_strcmp(hint, "unaware") == 0) {
              WIN_DeclareDPIAwareUnaware(_this);
          }
      }
  }
  
  static void WIN_InitDPIScaling(_THIS)
  {
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      if (SDL_GetHintBoolean(SDL_HINT_WINDOWS_DPI_SCALING, SDL_FALSE)) {
          WIN_DeclareDPIAwarePerMonitorV2(_this);
  
          data->dpi_scaling_enabled = SDL_TRUE;
      }
  }
  
  int WIN_VideoInit(_THIS)
  {
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      WIN_InitDPIAwareness(_this);
      WIN_InitDPIScaling(_this);
  
  #ifdef HIGHDPI_DEBUG
      SDL_Log("DPI awareness: %s", WIN_GetDPIAwareness(_this));
  #endif
  
  #if defined(__XBOXONE__) || defined(__XBOXSERIES__)
      /* For Xbox, we just need to create the single display */
      {
          SDL_VideoDisplay display;
          SDL_DisplayMode current_mode;
  
          SDL_zero(current_mode);
          D3D12_XBOX_GetResolution(&current_mode.w, &current_mode.h);
          current_mode.refresh_rate = 60;
          current_mode.format = SDL_PIXELFORMAT_ARGB8888;
  
          SDL_zero(display);
          display.desktop_mode = current_mode;
          display.current_mode = current_mode;
  
          SDL_AddVideoDisplay(&display, SDL_FALSE);
      }
  #else /*!defined(__XBOXONE__) && !defined(__XBOXSERIES__)*/
      if (WIN_InitModes(_this) < 0) {
          return -1;
      }
  
      WIN_InitKeyboard(_this);
      WIN_InitMouse(_this);
  #endif
  
      SDL_AddHintCallback(SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP, UpdateWindowsEnableMessageLoop, NULL);
      SDL_AddHintCallback(SDL_HINT_WINDOWS_ENABLE_MENU_MNEMONICS, UpdateWindowsEnableMenuMnemonics, NULL);
      SDL_AddHintCallback(SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN, UpdateWindowFrameUsableWhileCursorHidden, NULL);
  
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      data->_SDL_WAKEUP = RegisterWindowMessageA("_SDL_WAKEUP");
  #endif
  
      return 0;
  }
  
  void WIN_VideoQuit(_THIS)
  {
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      WIN_QuitModes(_this);
      WIN_QuitKeyboard(_this);
      WIN_QuitMouse(_this);
  #endif
  }
  
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
  #define D3D_DEBUG_INFO
  #include <d3d9.h>
  
  #ifdef D3D_DEBUG_INFO
  #ifndef D3D_SDK_VERSION
  #define D3D_SDK_VERSION (32 | 0x80000000)
  #endif
  #ifndef D3D9b_SDK_VERSION
  #define D3D9b_SDK_VERSION (31 | 0x80000000)
  #endif
  #else /**/
  #ifndef D3D_SDK_VERSION
  #define D3D_SDK_VERSION 32
  #endif
  #ifndef D3D9b_SDK_VERSION
  #define D3D9b_SDK_VERSION 31
  #endif
  #endif
  
  SDL_bool D3D_LoadDLL(void **pD3DDLL, IDirect3D9 **pDirect3D9Interface)
  {
      *pD3DDLL = SDL_LoadObject("D3D9.DLL");
      if (*pD3DDLL) {
          /* *INDENT-OFF* */ /* clang-format off */
          typedef IDirect3D9 *(WINAPI *Direct3DCreate9_t)(UINT SDKVersion);
          typedef HRESULT (WINAPI* Direct3DCreate9Ex_t)(UINT SDKVersion, IDirect3D9Ex** ppD3D);
          /* *INDENT-ON* */ /* clang-format on */
          Direct3DCreate9_t Direct3DCreate9Func;
  
          if (SDL_GetHintBoolean(SDL_HINT_WINDOWS_USE_D3D9EX, SDL_FALSE)) {
              Direct3DCreate9Ex_t Direct3DCreate9ExFunc;
  
              Direct3DCreate9ExFunc = (Direct3DCreate9Ex_t)SDL_LoadFunction(*pD3DDLL, "Direct3DCreate9Ex");
              if (Direct3DCreate9ExFunc) {
                  IDirect3D9Ex *pDirect3D9ExInterface;
                  HRESULT hr = Direct3DCreate9ExFunc(D3D_SDK_VERSION, &pDirect3D9ExInterface);
                  if (SUCCEEDED(hr)) {
                      const GUID IDirect3D9_GUID = { 0x81bdcbca, 0x64d4, 0x426d, { 0xae, 0x8d, 0xad, 0x1, 0x47, 0xf4, 0x27, 0x5c } };
                      hr = IDirect3D9Ex_QueryInterface(pDirect3D9ExInterface, &IDirect3D9_GUID, (void **)pDirect3D9Interface);
                      IDirect3D9Ex_Release(pDirect3D9ExInterface);
                      if (SUCCEEDED(hr)) {
                          return SDL_TRUE;
                      }
                  }
              }
          }
  
          Direct3DCreate9Func = (Direct3DCreate9_t)SDL_LoadFunction(*pD3DDLL, "Direct3DCreate9");
          if (Direct3DCreate9Func) {
              *pDirect3D9Interface = Direct3DCreate9Func(D3D_SDK_VERSION);
              if (*pDirect3D9Interface) {
                  return SDL_TRUE;
              }
          }
  
          SDL_UnloadObject(*pD3DDLL);
          *pD3DDLL = NULL;
      }
      *pDirect3D9Interface = NULL;
      return SDL_FALSE;
  }
  
  int SDL_Direct3D9GetAdapterIndex(int displayIndex)
  {
      void *pD3DDLL;
      IDirect3D9 *pD3D;
      if (!D3D_LoadDLL(&pD3DDLL, &pD3D)) {
          SDL_SetError("Unable to create Direct3D interface");
          return D3DADAPTER_DEFAULT;
      } else {
          SDL_DisplayData *pData = (SDL_DisplayData *)SDL_GetDisplayDriverData(displayIndex);
          int adapterIndex = D3DADAPTER_DEFAULT;
  
          if (pData == NULL) {
              SDL_SetError("Invalid display index");
              adapterIndex = -1; /* make sure we return something invalid */
          } else {
              char *displayName = WIN_StringToUTF8W(pData->DeviceName);
              unsigned int count = IDirect3D9_GetAdapterCount(pD3D);
              unsigned int i;
              for (i = 0; i < count; i++) {
                  D3DADAPTER_IDENTIFIER9 id;
                  IDirect3D9_GetAdapterIdentifier(pD3D, i, 0, &id);
  
                  if (SDL_strcmp(id.DeviceName, displayName) == 0) {
                      adapterIndex = i;
                      break;
                  }
              }
              SDL_free(displayName);
          }
  
          /* free up the D3D stuff we inited */
          IDirect3D9_Release(pD3D);
          SDL_UnloadObject(pD3DDLL);
  
          return adapterIndex;
      }
  }
  #endif /* !defined(__XBOXONE__) && !defined(__XBOXSERIES__) */
  
  #if HAVE_DXGI_H
  #define CINTERFACE
  #define COBJMACROS
  #include <dxgi.h>
  
  static SDL_bool DXGI_LoadDLL(void **pDXGIDLL, IDXGIFactory **pDXGIFactory)
  {
      *pDXGIDLL = SDL_LoadObject("DXGI.DLL");
      if (*pDXGIDLL) {
          /* *INDENT-OFF* */ /* clang-format off */
          typedef HRESULT (WINAPI *CreateDXGI_t)(REFIID riid, void **ppFactory);
          /* *INDENT-ON* */ /* clang-format on */
          CreateDXGI_t CreateDXGI;
  
          CreateDXGI = (CreateDXGI_t)SDL_LoadFunction(*pDXGIDLL, "CreateDXGIFactory");
          if (CreateDXGI) {
              GUID dxgiGUID = { 0x7b7166ec, 0x21c7, 0x44ae, { 0xb2, 0x1a, 0xc9, 0xae, 0x32, 0x1a, 0xe3, 0x69 } };
              if (!SUCCEEDED(CreateDXGI(&dxgiGUID, (void **)pDXGIFactory))) {
                  *pDXGIFactory = NULL;
              }
          }
          if (!*pDXGIFactory) {
              SDL_UnloadObject(*pDXGIDLL);
              *pDXGIDLL = NULL;
              return SDL_FALSE;
          }
  
          return SDL_TRUE;
      } else {
          *pDXGIFactory = NULL;
          return SDL_FALSE;
      }
  }
  #endif
  
  SDL_bool SDL_DXGIGetOutputInfo(int displayIndex, int *adapterIndex, int *outputIndex)
  {
  #if !HAVE_DXGI_H
      if (adapterIndex) {
          *adapterIndex = -1;
      }
      if (outputIndex) {
          *outputIndex = -1;
      }
      SDL_SetError("SDL was compiled without DXGI support due to missing dxgi.h header");
      return SDL_FALSE;
  #else
      SDL_DisplayData *pData = (SDL_DisplayData *)SDL_GetDisplayDriverData(displayIndex);
      void *pDXGIDLL;
      char *displayName;
      int nAdapter, nOutput;
      IDXGIFactory *pDXGIFactory = NULL;
      IDXGIAdapter *pDXGIAdapter;
      IDXGIOutput *pDXGIOutput;
  
      if (adapterIndex == NULL) {
          SDL_InvalidParamError("adapterIndex");
          return SDL_FALSE;
      }
  
      if (outputIndex == NULL) {
          SDL_InvalidParamError("outputIndex");
          return SDL_FALSE;
      }
  
      *adapterIndex = -1;
      *outputIndex = -1;
  
      if (pData == NULL) {
          SDL_SetError("Invalid display index");
          return SDL_FALSE;
      }
  
      if (!DXGI_LoadDLL(&pDXGIDLL, &pDXGIFactory)) {
          SDL_SetError("Unable to create DXGI interface");
          return SDL_FALSE;
      }
  
      displayName = WIN_StringToUTF8W(pData->DeviceName);
      nAdapter = 0;
      while (*adapterIndex == -1 && SUCCEEDED(IDXGIFactory_EnumAdapters(pDXGIFactory, nAdapter, &pDXGIAdapter))) {
          nOutput = 0;
          while (*adapterIndex == -1 && SUCCEEDED(IDXGIAdapter_EnumOutputs(pDXGIAdapter, nOutput, &pDXGIOutput))) {
              DXGI_OUTPUT_DESC outputDesc;
              if (SUCCEEDED(IDXGIOutput_GetDesc(pDXGIOutput, &outputDesc))) {
                  char *outputName = WIN_StringToUTF8W(outputDesc.DeviceName);
                  if (SDL_strcmp(outputName, displayName) == 0) {
                      *adapterIndex = nAdapter;
                      *outputIndex = nOutput;
                  }
                  SDL_free(outputName);
              }
              IDXGIOutput_Release(pDXGIOutput);
              nOutput++;
          }
          IDXGIAdapter_Release(pDXGIAdapter);
          nAdapter++;
      }
      SDL_free(displayName);
  
      /* free up the DXGI factory */
      IDXGIFactory_Release(pDXGIFactory);
      SDL_UnloadObject(pDXGIDLL);
  
      if (*adapterIndex == -1) {
          return SDL_FALSE;
      } else {
          return SDL_TRUE;
      }
  #endif
  }
  
  SDL_bool WIN_IsPerMonitorV2DPIAware(_THIS)
  {
  #if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
      SDL_VideoData *data = (SDL_VideoData *)_this->driverdata;
  
      if (data->AreDpiAwarenessContextsEqual && data->GetThreadDpiAwarenessContext) {
          /* Windows 10, version 1607 */
          return (SDL_bool)data->AreDpiAwarenessContextsEqual(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2,
                                                              data->GetThreadDpiAwarenessContext());
      }
  #endif
      return SDL_FALSE;
  }
  
  #endif /* SDL_VIDEO_DRIVER_WINDOWS */
  
  /* vim: set ts=4 sw=4 expandtab: */
  

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