src/video/windows/SDL_windowsvideo.c

   1 /*
   2   Simple DirectMedia Layer
   3   Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
   4
   5   This software is provided 'as-is', without any express or implied
   6   warranty.  In no event will the authors be held liable for any damages
   7   arising from the use of this software.
   8
   9   Permission is granted to anyone to use this software for any purpose,
  10   including commercial applications, and to alter it and redistribute it
  11   freely, subject to the following restrictions:
  12
  13   1. The origin of this software must not be misrepresented; you must not
  14      claim that you wrote the original software. If you use this software
  15      in a product, an acknowledgment in the product documentation would be
  16      appreciated but is not required.
  17   2. Altered source versions must be plainly marked as such, and must not be
  18      misrepresented as being the original software.
  19   3. This notice may not be removed or altered from any source distribution.
  20 */
  21 #include "../../SDL_internal.h"
  22
  23 #if SDL_VIDEO_DRIVER_WINDOWS
  24
  25 #include "SDL_main.h"
  26 #include "SDL_video.h"
  27 #include "SDL_hints.h"
  28 #include "SDL_mouse.h"
  29 #include "SDL_system.h"
  30 #include "../SDL_sysvideo.h"
  31 #include "../SDL_pixels_c.h"
  32
  33 #include "SDL_windowsvideo.h"
  34 #include "SDL_windowsframebuffer.h"
  35 #include "SDL_windowsshape.h"
  36
  37 /* Initialization/Query functions */
  38 static int WIN_VideoInit(_THIS);
  39 static void WIN_VideoQuit(_THIS);
  40
  41 /* Hints */
  42 SDL_bool g_WindowsEnableMessageLoop = SDL_TRUE;
  43 SDL_bool g_WindowFrameUsableWhileCursorHidden = SDL_TRUE;
  44
  45 static void UpdateWindowsEnableMessageLoop(void *userdata, const char *name, const char *oldValue, const char *newValue)
  46 {
  47     if (newValue && *newValue == '0') {
  48         g_WindowsEnableMessageLoop = SDL_FALSE;
  49     } else {
  50         g_WindowsEnableMessageLoop = SDL_TRUE;
  51     }
  52 }
  53
  54 static void UpdateWindowFrameUsableWhileCursorHidden(void *userdata, const char *name, const char *oldValue, const char *newValue)
  55 {
  56     if (newValue && *newValue == '0') {
  57         g_WindowFrameUsableWhileCursorHidden = SDL_FALSE;
  58     } else {
  59         g_WindowFrameUsableWhileCursorHidden = SDL_TRUE;
  60     }
  61 }
  62
  63
  64 /* Windows driver bootstrap functions */
  65
  66 static int
  67 WIN_Available(void)
  68 {
  69     return (1);
  70 }
  71
  72 static void
  73 WIN_DeleteDevice(SDL_VideoDevice * device)
  74 {
  75     SDL_VideoData *data = (SDL_VideoData *) device->driverdata;
  76
  77     SDL_UnregisterApp();
  78     if (data->userDLL) {
  79         SDL_UnloadObject(data->userDLL);
  80     }
  81     if (data->shcoreDLL) {
  82         SDL_UnloadObject(data->shcoreDLL);
  83     }
  84
  85     SDL_free(device->driverdata);
  86     SDL_free(device);
  87 }
  88
  89 static SDL_VideoDevice *
  90 WIN_CreateDevice(int devindex)
  91 {
  92     SDL_VideoDevice *device;
  93     SDL_VideoData *data;
  94
  95     SDL_RegisterApp(NULL, 0, NULL);
  96
  97     /* Initialize all variables that we clean on shutdown */
  98     device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
  99     if (device) {
 100         data = (struct SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
 101     } else {
 102         data = NULL;
 103     }
 104     if (!data) {
 105         SDL_free(device);
 106         SDL_OutOfMemory();
 107         return NULL;
 108     }
 109     device->driverdata = data;
 110
 111     data->userDLL = SDL_LoadObject("USER32.DLL");
 112     if (data->userDLL) {
 113         data->CloseTouchInputHandle = (BOOL (WINAPI *)(HTOUCHINPUT)) SDL_LoadFunction(data->userDLL, "CloseTouchInputHandle");
 114         data->GetTouchInputInfo = (BOOL (WINAPI *)(HTOUCHINPUT, UINT, PTOUCHINPUT, int)) SDL_LoadFunction(data->userDLL, "GetTouchInputInfo");
 115         data->RegisterTouchWindow = (BOOL (WINAPI *)(HWND, ULONG)) SDL_LoadFunction(data->userDLL, "RegisterTouchWindow");
 116     }
 117
 118     data->shcoreDLL = SDL_LoadObject("SHCORE.DLL");
 119     if (data->shcoreDLL) {
 120         data->GetDpiForMonitor = (HRESULT (WINAPI *)(HMONITOR, MONITOR_DPI_TYPE, UINT *, UINT *)) SDL_LoadFunction(data->shcoreDLL, "GetDpiForMonitor");
 121     }
 122
 123     /* Set the function pointers */
 124     device->VideoInit = WIN_VideoInit;
 125     device->VideoQuit = WIN_VideoQuit;
 126     device->GetDisplayBounds = WIN_GetDisplayBounds;
 127     device->GetDisplayDPI = WIN_GetDisplayDPI;
 128     device->GetDisplayModes = WIN_GetDisplayModes;
 129     device->SetDisplayMode = WIN_SetDisplayMode;
 130     device->PumpEvents = WIN_PumpEvents;
 131
 132 #undef CreateWindow
 133     device->CreateWindow = WIN_CreateWindow;
 134     device->CreateWindowFrom = WIN_CreateWindowFrom;
 135     device->SetWindowTitle = WIN_SetWindowTitle;
 136     device->SetWindowIcon = WIN_SetWindowIcon;
 137     device->SetWindowPosition = WIN_SetWindowPosition;
 138     device->SetWindowSize = WIN_SetWindowSize;
 139     device->ShowWindow = WIN_ShowWindow;
 140     device->HideWindow = WIN_HideWindow;
 141     device->RaiseWindow = WIN_RaiseWindow;
 142     device->MaximizeWindow = WIN_MaximizeWindow;
 143     device->MinimizeWindow = WIN_MinimizeWindow;
 144     device->RestoreWindow = WIN_RestoreWindow;
 145     device->SetWindowBordered = WIN_SetWindowBordered;
 146     device->SetWindowFullscreen = WIN_SetWindowFullscreen;
 147     device->SetWindowGammaRamp = WIN_SetWindowGammaRamp;
 148     device->GetWindowGammaRamp = WIN_GetWindowGammaRamp;
 149     device->SetWindowGrab = WIN_SetWindowGrab;
 150     device->DestroyWindow = WIN_DestroyWindow;
 151     device->GetWindowWMInfo = WIN_GetWindowWMInfo;
 152     device->CreateWindowFramebuffer = WIN_CreateWindowFramebuffer;
 153     device->UpdateWindowFramebuffer = WIN_UpdateWindowFramebuffer;
 154     device->DestroyWindowFramebuffer = WIN_DestroyWindowFramebuffer;
 155     device->OnWindowEnter = WIN_OnWindowEnter;
 156     device->SetWindowHitTest = WIN_SetWindowHitTest;
 157
 158     device->shape_driver.CreateShaper = Win32_CreateShaper;
 159     device->shape_driver.SetWindowShape = Win32_SetWindowShape;
 160     device->shape_driver.ResizeWindowShape = Win32_ResizeWindowShape;
 161
 162 #if SDL_VIDEO_OPENGL_WGL
 163     device->GL_LoadLibrary = WIN_GL_LoadLibrary;
 164     device->GL_GetProcAddress = WIN_GL_GetProcAddress;
 165     device->GL_UnloadLibrary = WIN_GL_UnloadLibrary;
 166     device->GL_CreateContext = WIN_GL_CreateContext;
 167     device->GL_MakeCurrent = WIN_GL_MakeCurrent;
 168     device->GL_SetSwapInterval = WIN_GL_SetSwapInterval;
 169     device->GL_GetSwapInterval = WIN_GL_GetSwapInterval;
 170     device->GL_SwapWindow = WIN_GL_SwapWindow;
 171     device->GL_DeleteContext = WIN_GL_DeleteContext;
 172 #elif SDL_VIDEO_OPENGL_EGL
 173     /* Use EGL based functions */
 174     device->GL_LoadLibrary = WIN_GLES_LoadLibrary;
 175     device->GL_GetProcAddress = WIN_GLES_GetProcAddress;
 176     device->GL_UnloadLibrary = WIN_GLES_UnloadLibrary;
 177     device->GL_CreateContext = WIN_GLES_CreateContext;
 178     device->GL_MakeCurrent = WIN_GLES_MakeCurrent;
 179     device->GL_SetSwapInterval = WIN_GLES_SetSwapInterval;
 180     device->GL_GetSwapInterval = WIN_GLES_GetSwapInterval;
 181     device->GL_SwapWindow = WIN_GLES_SwapWindow;
 182     device->GL_DeleteContext = WIN_GLES_DeleteContext;
 183 #endif
 184     device->StartTextInput = WIN_StartTextInput;
 185     device->StopTextInput = WIN_StopTextInput;
 186     device->SetTextInputRect = WIN_SetTextInputRect;
 187
 188     device->SetClipboardText = WIN_SetClipboardText;
 189     device->GetClipboardText = WIN_GetClipboardText;
 190     device->HasClipboardText = WIN_HasClipboardText;
 191
 192     device->free = WIN_DeleteDevice;
 193
 194     return device;
 195 }
 196
 197
 198 VideoBootStrap WINDOWS_bootstrap = {
 199     "windows", "SDL Windows video driver", WIN_Available, WIN_CreateDevice
 200 };
 201
 202 int
 203 WIN_VideoInit(_THIS)
 204 {
 205     if (WIN_InitModes(_this) < 0) {
 206         return -1;
 207     }
 208
 209     WIN_InitKeyboard(_this);
 210     WIN_InitMouse(_this);
 211
 212     SDL_AddHintCallback(SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP, UpdateWindowsEnableMessageLoop, NULL);
 213     SDL_AddHintCallback(SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN, UpdateWindowFrameUsableWhileCursorHidden, NULL);
 214
 215     return 0;
 216 }
 217
 218 void
 219 WIN_VideoQuit(_THIS)
 220 {
 221     WIN_QuitModes(_this);
 222     WIN_QuitKeyboard(_this);
 223     WIN_QuitMouse(_this);
 224 }
 225
 226
 227 #define D3D_DEBUG_INFO
 228 #include <d3d9.h>
 229
 230 SDL_bool
 231 D3D_LoadDLL(void **pD3DDLL, IDirect3D9 **pDirect3D9Interface)
 232 {
 233     *pD3DDLL = SDL_LoadObject("D3D9.DLL");
 234     if (*pD3DDLL) {
 235         typedef IDirect3D9 *(WINAPI *Direct3DCreate9_t) (UINT SDKVersion);
 236         Direct3DCreate9_t Direct3DCreate9Func;
 237
 238 #ifdef USE_D3D9EX
 239         typedef HRESULT (WINAPI *Direct3DCreate9Ex_t)(UINT SDKVersion, IDirect3D9Ex **ppD3D);
 240         Direct3DCreate9Ex_t Direct3DCreate9ExFunc;
 241
 242         Direct3DCreate9ExFunc = (Direct3DCreate9Ex_t)SDL_LoadFunction(*pD3DDLL, "Direct3DCreate9Ex");
 243         if (Direct3DCreate9ExFunc) {
 244             IDirect3D9Ex *pDirect3D9ExInterface;
 245             HRESULT hr = Direct3DCreate9ExFunc(D3D_SDK_VERSION, &pDirect3D9ExInterface);
 246             if (SUCCEEDED(hr)) {
 247                 const GUID IDirect3D9_GUID = { 0x81bdcbca, 0x64d4, 0x426d, { 0xae, 0x8d, 0xad, 0x1, 0x47, 0xf4, 0x27, 0x5c } };
 248                 hr = IDirect3D9Ex_QueryInterface(pDirect3D9ExInterface, &IDirect3D9_GUID, (void**)pDirect3D9Interface);
 249                 IDirect3D9Ex_Release(pDirect3D9ExInterface);
 250                 if (SUCCEEDED(hr)) {
 251                     return SDL_TRUE;
 252                 }
 253             }
 254         }
 255 #endif /* USE_D3D9EX */
 256
 257         Direct3DCreate9Func = (Direct3DCreate9_t)SDL_LoadFunction(*pD3DDLL, "Direct3DCreate9");
 258         if (Direct3DCreate9Func) {
 259             *pDirect3D9Interface = Direct3DCreate9Func(D3D_SDK_VERSION);
 260             if (*pDirect3D9Interface) {
 261                 return SDL_TRUE;
 262             }
 263         }
 264
 265         SDL_UnloadObject(*pD3DDLL);
 266         *pD3DDLL = NULL;
 267     }
 268     *pDirect3D9Interface = NULL;
 269     return SDL_FALSE;
 270 }
 271
 272
 273 int
 274 SDL_Direct3D9GetAdapterIndex(int displayIndex)
 275 {
 276     void *pD3DDLL;
 277     IDirect3D9 *pD3D;
 278     if (!D3D_LoadDLL(&pD3DDLL, &pD3D)) {
 279         SDL_SetError("Unable to create Direct3D interface");
 280         return D3DADAPTER_DEFAULT;
 281     } else {
 282         SDL_DisplayData *pData = (SDL_DisplayData *)SDL_GetDisplayDriverData(displayIndex);
 283         int adapterIndex = D3DADAPTER_DEFAULT;
 284
 285         if (!pData) {
 286             SDL_SetError("Invalid display index");
 287             adapterIndex = -1; /* make sure we return something invalid */
 288         } else {
 289             char *displayName = WIN_StringToUTF8(pData->DeviceName);
 290             unsigned int count = IDirect3D9_GetAdapterCount(pD3D);
 291             unsigned int i;
 292             for (i=0; i<count; i++) {
 293                 D3DADAPTER_IDENTIFIER9 id;
 294                 IDirect3D9_GetAdapterIdentifier(pD3D, i, 0, &id);
 295
 296                 if (SDL_strcmp(id.DeviceName, displayName) == 0) {
 297                     adapterIndex = i;
 298                     break;
 299                 }
 300             }
 301             SDL_free(displayName);
 302         }
 303
 304         /* free up the D3D stuff we inited */
 305         IDirect3D9_Release(pD3D);
 306         SDL_UnloadObject(pD3DDLL);
 307
 308         return adapterIndex;
 309     }
 310 }
 311
 312 #if HAVE_DXGI_H
 313 #define CINTERFACE
 314 #define COBJMACROS
 315 #include <dxgi.h>
 316
 317 static SDL_bool
 318 DXGI_LoadDLL(void **pDXGIDLL, IDXGIFactory **pDXGIFactory)
 319 {
 320     *pDXGIDLL = SDL_LoadObject("DXGI.DLL");
 321     if (*pDXGIDLL) {
 322         HRESULT (WINAPI *CreateDXGI)(REFIID riid, void **ppFactory);
 323
 324         CreateDXGI =
 325             (HRESULT (WINAPI *) (REFIID, void**)) SDL_LoadFunction(*pDXGIDLL,
 326             "CreateDXGIFactory");
 327         if (CreateDXGI) {
 328             GUID dxgiGUID = {0x7b7166ec,0x21c7,0x44ae,{0xb2,0x1a,0xc9,0xae,0x32,0x1a,0xe3,0x69}};
 329             if (!SUCCEEDED(CreateDXGI(&dxgiGUID, (void**)pDXGIFactory))) {
 330                 *pDXGIFactory = NULL;
 331             }
 332         }
 333         if (!*pDXGIFactory) {
 334             SDL_UnloadObject(*pDXGIDLL);
 335             *pDXGIDLL = NULL;
 336             return SDL_FALSE;
 337         }
 338
 339         return SDL_TRUE;
 340     } else {
 341         *pDXGIFactory = NULL;
 342         return SDL_FALSE;
 343     }
 344 }
 345 #endif
 346
 347
 348 SDL_bool
 349 SDL_DXGIGetOutputInfo(int displayIndex, int *adapterIndex, int *outputIndex)
 350 {
 351 #if !HAVE_DXGI_H
 352     if (adapterIndex) *adapterIndex = -1;
 353     if (outputIndex) *outputIndex = -1;
 354     SDL_SetError("SDL was compiled without DXGI support due to missing dxgi.h header");
 355     return SDL_FALSE;
 356 #else
 357     SDL_DisplayData *pData = (SDL_DisplayData *)SDL_GetDisplayDriverData(displayIndex);
 358     void *pDXGIDLL;
 359     char *displayName;
 360     int nAdapter, nOutput;
 361     IDXGIFactory *pDXGIFactory;
 362     IDXGIAdapter *pDXGIAdapter;
 363     IDXGIOutput* pDXGIOutput;
 364
 365     if (!adapterIndex) {
 366         SDL_InvalidParamError("adapterIndex");
 367         return SDL_FALSE;
 368     }
 369
 370     if (!outputIndex) {
 371         SDL_InvalidParamError("outputIndex");
 372         return SDL_FALSE;
 373     }
 374
 375     *adapterIndex = -1;
 376     *outputIndex = -1;
 377
 378     if (!pData) {
 379         SDL_SetError("Invalid display index");
 380         return SDL_FALSE;
 381     }
 382
 383     if (!DXGI_LoadDLL(&pDXGIDLL, &pDXGIFactory)) {
 384         SDL_SetError("Unable to create DXGI interface");
 385         return SDL_FALSE;
 386     }
 387
 388     displayName = WIN_StringToUTF8(pData->DeviceName);
 389     nAdapter = 0;
 390     while (*adapterIndex == -1 && SUCCEEDED(IDXGIFactory_EnumAdapters(pDXGIFactory, nAdapter, &pDXGIAdapter))) {
 391         nOutput = 0;
 392         while (*adapterIndex == -1 && SUCCEEDED(IDXGIAdapter_EnumOutputs(pDXGIAdapter, nOutput, &pDXGIOutput))) {
 393             DXGI_OUTPUT_DESC outputDesc;
 394             if (SUCCEEDED(IDXGIOutput_GetDesc(pDXGIOutput, &outputDesc))) {
 395                 char *outputName = WIN_StringToUTF8(outputDesc.DeviceName);
 396                 if (SDL_strcmp(outputName, displayName) == 0) {
 397                     *adapterIndex = nAdapter;
 398                     *outputIndex = nOutput;
 399                 }
 400                 SDL_free(outputName);
 401             }
 402             IDXGIOutput_Release(pDXGIOutput);
 403             nOutput++;
 404         }
 405         IDXGIAdapter_Release(pDXGIAdapter);
 406         nAdapter++;
 407     }
 408     SDL_free(displayName);
 409
 410     /* free up the DXGI factory */
 411     IDXGIFactory_Release(pDXGIFactory);
 412     SDL_UnloadObject(pDXGIDLL);
 413
 414     if (*adapterIndex == -1) {
 415         return SDL_FALSE;
 416     } else {
 417         return SDL_TRUE;
 418     }
 419 #endif
 420 }
 421
 422 #endif /* SDL_VIDEO_DRIVER_WINDOWS */
 423
 424 /* vim: set ts=4 sw=4 expandtab: */