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   1 /*              DirectDraw Base Functions
   2  *
   3  * Copyright 1997-1999 Marcus Meissner
   4  * Copyright 1998 Lionel Ulmer (most of Direct3D stuff)
   5  * Copyright 2000-2001 TransGaming Technologies Inc.
   6  *
   7  * This file contains the (internal) driver registration functions,
   8  * driver enumeration APIs and DirectDraw creation functions.
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #define GLPRIVATE_NO_REDEFINE
  26
  27 #include "config.h"
  28 #include "wine/port.h"
  29
  30 #include <assert.h>
  31 #include <stdarg.h>
  32 #include <string.h>
  33 #include <stdlib.h>
  34
  35 #define COBJMACROS
  36
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "winnls.h"
  40 #include "winerror.h"
  41 #include "wingdi.h"
  42
  43 #include "ddraw.h"
  44 #include "d3d.h"
  45
  46 /* This for all the enumeration and creation of D3D-related objects */
  47 #include "ddraw_private.h"
  48 #include "wine/debug.h"
  49 #include "wine/library.h"
  50
  51 #include "gl_private.h"
  52
  53 #undef GLPRIVATE_NO_REDEFINE
  54
  55 #define MAX_DDRAW_DRIVERS 3
  56 static const ddraw_driver* DDRAW_drivers[MAX_DDRAW_DRIVERS];
  57 static int DDRAW_num_drivers; /* = 0 */
  58 static int DDRAW_default_driver;
  59
  60 void (*wine_tsx11_lock_ptr)(void) = NULL;
  61 void (*wine_tsx11_unlock_ptr)(void) = NULL;
  62
  63 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  64
  65 /**********************************************************************/
  66
  67 typedef struct {
  68     LPVOID lpCallback;
  69     LPVOID lpContext;
  70 } DirectDrawEnumerateProcData;
  71
  72 BOOL opengl_initialized = 0;
  73
  74 #ifdef HAVE_OPENGL
  75
  76 #include "mesa_private.h"
  77
  78 static void *gl_handle = NULL;
  79
  80 #define GL_API_FUNCTION(f) typeof(f) * p##f;
  81 #include "gl_api.h"
  82 #undef GL_API_FUNCTION
  83
  84 #ifndef SONAME_LIBGL
  85 #define SONAME_LIBGL "libGL.so"
  86 #endif
  87
  88 static BOOL DDRAW_bind_to_opengl( void )
  89 {
  90     const char *glname = SONAME_LIBGL;
  91
  92     gl_handle = wine_dlopen(glname, RTLD_NOW, NULL, 0);
  93     if (!gl_handle) {
  94         WARN("Wine cannot find the OpenGL graphics library (%s).\n",glname);
  95         return FALSE;
  96     }
  97
  98 #define GL_API_FUNCTION(f)  \
  99     if((p##f = wine_dlsym(gl_handle, #f, NULL, 0)) == NULL) \
 100     { \
 101         WARN("Can't find symbol %s\n", #f); \
 102         goto sym_not_found; \
 103     }
 104 #include "gl_api.h"
 105 #undef GL_API_FUNCTION
 106
 107     /* And now calls the function to initialize the various fields for the rendering devices */
 108     return d3ddevice_init_at_startup(gl_handle);
 109
 110 sym_not_found:
 111     WARN("Wine cannot find certain functions that it needs inside the OpenGL\n"
 112          "graphics library.  To enable Wine to use OpenGL please upgrade\n"
 113          "your OpenGL libraries\n");
 114     wine_dlclose(gl_handle, NULL, 0);
 115     gl_handle = NULL;
 116     return FALSE;
 117 }
 118
 119 #endif /* HAVE_OPENGL */
 120
 121 BOOL s3tc_initialized = 0;
 122
 123 static void *s3tc_handle = NULL;
 124
 125 FUNC_FETCH_2D_TEXEL_RGBA_DXT1 fetch_2d_texel_rgba_dxt1;
 126 FUNC_FETCH_2D_TEXEL_RGBA_DXT3 fetch_2d_texel_rgba_dxt3;
 127 FUNC_FETCH_2D_TEXEL_RGBA_DXT5 fetch_2d_texel_rgba_dxt5;
 128
 129 #ifndef SONAME_LIBTXC_DXTN
 130 #define SONAME_LIBTXC_DXTN "libtxc_dxtn.so"
 131 #endif
 132
 133 static BOOL DDRAW_bind_to_s3tc( void )
 134 {
 135     const char * const s3tcname = SONAME_LIBTXC_DXTN;
 136
 137     s3tc_handle = wine_dlopen(s3tcname, RTLD_NOW, NULL, 0);
 138     if (!s3tc_handle) {
 139         TRACE("No S3TC software decompression library seems to be present (%s).\n",s3tcname);
 140         return FALSE;
 141     }
 142     TRACE("Found S3TC software decompression library (%s).\n",s3tcname);
 143
 144 #define API_FUNCTION(f)  \
 145     if((f = wine_dlsym(s3tc_handle, #f, NULL, 0)) == NULL) \
 146     { \
 147         WARN("Can't find symbol %s\n", #f); \
 148         goto sym_not_found; \
 149     }
 150     API_FUNCTION(fetch_2d_texel_rgba_dxt1);
 151     API_FUNCTION(fetch_2d_texel_rgba_dxt3);
 152     API_FUNCTION(fetch_2d_texel_rgba_dxt5);
 153 #undef API_FUNCTION
 154
 155     return TRUE;
 156
 157 sym_not_found:
 158     WARN("Wine cannot find functions that are necessary for S3TC software decompression\n");
 159     wine_dlclose(s3tc_handle, NULL, 0);
 160     s3tc_handle = NULL;
 161     return FALSE;
 162 }
 163
 164 /*******************************************************************************
 165  * DirectDrawEnumerateExA (DDRAW.@)
 166  *
 167  * Enumerates all DirectDraw devices installed on the system.
 168  *
 169  * PARAMS
 170  *  lpCallback [I] DDEnumCallbackEx function to be called with a description of
 171  *                 each enumerated HAL.
 172  *  lpContext  [I] application-defined value to be passed to the callback.
 173  *  dwFlags    [I] Specifies the enumeration scope. see msdn.
 174  *
 175  * RETURNS
 176  *  Success: DD_OK.
 177  *  Failure: DDERR_INVALIDPARAMS
 178  */
 179 HRESULT WINAPI DirectDrawEnumerateExA(
 180     LPDDENUMCALLBACKEXA lpCallback, LPVOID lpContext, DWORD dwFlags)
 181 {
 182     int i;
 183     TRACE("(%p,%p, %08lx)\n", lpCallback, lpContext, dwFlags);
 184
 185     if (TRACE_ON(ddraw)) {
 186         TRACE("  Flags : ");
 187         if (dwFlags & DDENUM_ATTACHEDSECONDARYDEVICES)
 188             TRACE("DDENUM_ATTACHEDSECONDARYDEVICES ");
 189         if (dwFlags & DDENUM_DETACHEDSECONDARYDEVICES)
 190             TRACE("DDENUM_DETACHEDSECONDARYDEVICES ");
 191         if (dwFlags & DDENUM_NONDISPLAYDEVICES)
 192             TRACE("DDENUM_NONDISPLAYDEVICES ");
 193         TRACE("\n");
 194     }
 195
 196     for (i=0; i<DDRAW_num_drivers; i++)
 197     {
 198         TRACE("Enumerating %s/%s interface\n",
 199               DDRAW_drivers[i]->info->szDriver,
 200               DDRAW_drivers[i]->info->szDescription);
 201
 202         /* We have to pass NULL from the primary display device.
 203          * RoadRage chapter 6's enumeration routine expects it. */
 204         if (!lpCallback((DDRAW_default_driver == i) ? NULL
 205                         :(LPGUID)&DDRAW_drivers[i]->info->guidDeviceIdentifier,
 206                         (LPSTR)DDRAW_drivers[i]->info->szDescription,
 207                         (LPSTR)DDRAW_drivers[i]->info->szDriver,
 208                         lpContext, 0))
 209             return DD_OK;
 210     }
 211
 212     /* Unsupported flags */
 213     if (dwFlags & DDENUM_NONDISPLAYDEVICES) {
 214         FIXME("no non-display devices supported.\n");
 215     }
 216     if (dwFlags & DDENUM_DETACHEDSECONDARYDEVICES) {
 217         FIXME("no detached secondary devices supported.\n");
 218     }
 219
 220     return DD_OK;
 221 }
 222
 223 /*******************************************************************************
 224  * DirectDrawEnumerateExW (DDRAW.@)
 225  */
 226
 227 static BOOL CALLBACK DirectDrawEnumerateExProcW(
 228     GUID *lpGUID, LPSTR lpDriverDescription, LPSTR lpDriverName,
 229     LPVOID lpContext, HMONITOR hm)
 230 {
 231     INT len;
 232     BOOL bResult;
 233     LPWSTR lpDriverDescriptionW, lpDriverNameW;
 234     DirectDrawEnumerateProcData *pEPD = (DirectDrawEnumerateProcData*)lpContext;
 235
 236     len = MultiByteToWideChar( CP_ACP, 0, lpDriverDescription, -1, NULL, 0 );
 237     lpDriverDescriptionW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 238     MultiByteToWideChar( CP_ACP, 0, lpDriverDescription, -1, lpDriverDescriptionW, len );
 239
 240     len = MultiByteToWideChar( CP_ACP, 0, lpDriverName, -1, NULL, 0 );
 241     lpDriverNameW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 242     MultiByteToWideChar( CP_ACP, 0, lpDriverName, -1, lpDriverNameW, len );
 243
 244     bResult = (*(LPDDENUMCALLBACKEXW *) pEPD->lpCallback)(lpGUID, lpDriverDescriptionW,
 245                                                           lpDriverNameW, pEPD->lpContext, hm);
 246
 247     HeapFree(GetProcessHeap(), 0, lpDriverDescriptionW);
 248     HeapFree(GetProcessHeap(), 0, lpDriverNameW);
 249     return bResult;
 250 }
 251
 252 HRESULT WINAPI DirectDrawEnumerateExW(
 253   LPDDENUMCALLBACKEXW lpCallback, LPVOID lpContext, DWORD dwFlags)
 254 {
 255     DirectDrawEnumerateProcData epd;
 256     epd.lpCallback = (LPVOID) lpCallback;
 257     epd.lpContext = lpContext;
 258
 259     return DirectDrawEnumerateExA(DirectDrawEnumerateExProcW, (LPVOID) &epd, 0);
 260 }
 261
 262 /***********************************************************************
 263  *              DirectDrawEnumerateA (DDRAW.@)
 264  */
 265
 266 static BOOL CALLBACK DirectDrawEnumerateProcA(
 267         GUID *lpGUID, LPSTR lpDriverDescription, LPSTR lpDriverName,
 268         LPVOID lpContext, HMONITOR hm)
 269 {
 270     DirectDrawEnumerateProcData *pEPD = (DirectDrawEnumerateProcData*)lpContext;
 271
 272     return ((LPDDENUMCALLBACKA) pEPD->lpCallback)(
 273         lpGUID, lpDriverDescription, lpDriverName, pEPD->lpContext);
 274 }
 275
 276 HRESULT WINAPI DirectDrawEnumerateA(
 277   LPDDENUMCALLBACKA lpCallback, LPVOID lpContext)
 278 {
 279     DirectDrawEnumerateProcData epd;
 280     epd.lpCallback = (LPVOID) lpCallback;
 281     epd.lpContext = lpContext;
 282
 283     return DirectDrawEnumerateExA(DirectDrawEnumerateProcA, (LPVOID) &epd, 0);
 284 }
 285
 286 /***********************************************************************
 287  *              DirectDrawEnumerateW (DDRAW.@)
 288  */
 289
 290 static BOOL WINAPI DirectDrawEnumerateProcW(
 291   GUID *lpGUID, LPWSTR lpDriverDescription, LPWSTR lpDriverName,
 292   LPVOID lpContext, HMONITOR hm)
 293 {
 294     DirectDrawEnumerateProcData *pEPD = (DirectDrawEnumerateProcData*)lpContext;
 295
 296     return ((LPDDENUMCALLBACKW) pEPD->lpCallback)(
 297         lpGUID, lpDriverDescription, lpDriverName, pEPD->lpContext);
 298 }
 299
 300 HRESULT WINAPI DirectDrawEnumerateW(
 301   LPDDENUMCALLBACKW lpCallback, LPVOID lpContext)
 302 {
 303     DirectDrawEnumerateProcData epd;
 304     epd.lpCallback = (LPVOID) lpCallback;
 305     epd.lpContext = lpContext;
 306
 307     return DirectDrawEnumerateExW(DirectDrawEnumerateProcW, (LPVOID) &epd, 0);
 308 }
 309
 310 /***********************************************************************
 311  *              DirectDrawCreate (DDRAW.@)
 312  */
 313
 314 const ddraw_driver* DDRAW_FindDriver(const GUID* pGUID)
 315 {
 316     static const GUID zeroGUID; /* gets zero-inited */
 317
 318     TRACE("(%s)\n", pGUID ? debugstr_guid(pGUID) : "(null)");
 319
 320     if (DDRAW_num_drivers == 0) return NULL;
 321
 322     if (pGUID == (LPGUID)DDCREATE_EMULATIONONLY
 323         || pGUID == (LPGUID)DDCREATE_HARDWAREONLY)
 324         pGUID = NULL;
 325
 326     if (pGUID == NULL || memcmp(pGUID, &zeroGUID, sizeof(GUID)) == 0)
 327     {
 328         /* Use the default driver. */
 329         return DDRAW_drivers[DDRAW_default_driver];
 330     }
 331     else
 332     {
 333         /* Look for a matching GUID. */
 334
 335         int i;
 336         for (i=0; i < DDRAW_num_drivers; i++)
 337         {
 338             if (IsEqualGUID(pGUID,
 339                             &DDRAW_drivers[i]->info->guidDeviceIdentifier))
 340                 break;
 341         }
 342
 343         if (i < DDRAW_num_drivers)
 344         {
 345             return DDRAW_drivers[i];
 346         }
 347         else
 348         {
 349             ERR("(%s): did not recognize requested GUID.\n",debugstr_guid(pGUID));
 350             return NULL;
 351         }
 352     }
 353 }
 354
 355 static HRESULT DDRAW_Create(
 356         LPGUID lpGUID, LPVOID *lplpDD, LPUNKNOWN pUnkOuter, REFIID iid, BOOL ex
 357 ) {
 358     const ddraw_driver* driver;
 359     LPDIRECTDRAW7 pDD;
 360     HRESULT hr;
 361
 362     TRACE("(%s,%p,%p,%d)\n", debugstr_guid(lpGUID), lplpDD, pUnkOuter, ex);
 363
 364     if (DDRAW_num_drivers == 0)
 365     {
 366         WARN("no DirectDraw drivers registered\n");
 367         return DDERR_INVALIDDIRECTDRAWGUID;
 368     }
 369
 370     if (lpGUID == (LPGUID)DDCREATE_EMULATIONONLY
 371         || lpGUID == (LPGUID)DDCREATE_HARDWAREONLY)
 372         lpGUID = NULL;
 373
 374     if (pUnkOuter != NULL)
 375         return DDERR_INVALIDPARAMS; /* CLASS_E_NOAGGREGATION? */
 376
 377     driver = DDRAW_FindDriver(lpGUID);
 378     if (driver == NULL) return DDERR_INVALIDDIRECTDRAWGUID;
 379
 380     hr = driver->create(lpGUID, &pDD, pUnkOuter, ex);
 381     if (FAILED(hr)) return hr;
 382
 383     hr = IDirectDraw7_QueryInterface(pDD, iid, lplpDD);
 384     IDirectDraw7_Release(pDD);
 385     return hr;
 386 }
 387
 388 /***********************************************************************
 389  *              DirectDrawCreate (DDRAW.@)
 390  *
 391  * Only creates legacy IDirectDraw interfaces.
 392  * Cannot create IDirectDraw7 interfaces.
 393  * In theory.
 394  */
 395 HRESULT WINAPI DirectDrawCreate(
 396         LPGUID lpGUID, LPDIRECTDRAW* lplpDD, LPUNKNOWN pUnkOuter
 397 ) {
 398     TRACE("(%s,%p,%p)\n", debugstr_guid(lpGUID), lplpDD, pUnkOuter);
 399     return DDRAW_Create(lpGUID, (LPVOID*) lplpDD, pUnkOuter, &IID_IDirectDraw, FALSE);
 400 }
 401
 402 /***********************************************************************
 403  *              DirectDrawCreateEx (DDRAW.@)
 404  *
 405  * Only creates new IDirectDraw7 interfaces.
 406  * Supposed to fail if legacy interfaces are requested.
 407  * In theory.
 408  */
 409 HRESULT WINAPI DirectDrawCreateEx(
 410         LPGUID lpGUID, LPVOID* lplpDD, REFIID iid, LPUNKNOWN pUnkOuter
 411 ) {
 412     TRACE("(%s,%p,%s,%p)\n", debugstr_guid(lpGUID), lplpDD, debugstr_guid(iid), pUnkOuter);
 413
 414     if (!IsEqualGUID(iid, &IID_IDirectDraw7))
 415         return DDERR_INVALIDPARAMS;
 416
 417     return DDRAW_Create(lpGUID, lplpDD, pUnkOuter, iid, TRUE);
 418 }
 419
 420 extern HRESULT Uninit_DirectDraw_Create(const GUID*, LPDIRECTDRAW7*,
 421                                         LPUNKNOWN, BOOL);
 422
 423 /* This is for the class factory. */
 424 static HRESULT DDRAW_CreateDirectDraw(IUnknown* pUnkOuter, REFIID iid,
 425                                       LPVOID* ppObj)
 426 {
 427     LPDIRECTDRAW7 pDD;
 428     HRESULT hr;
 429     BOOL ex;
 430
 431     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppObj);
 432
 433     /* This is a mighty hack :-) */
 434     if (IsEqualGUID(iid, &IID_IDirectDraw7))
 435         ex = TRUE;
 436     else
 437         ex = FALSE;
 438
 439     hr = Uninit_DirectDraw_Create(NULL, &pDD, pUnkOuter, ex);
 440     if (FAILED(hr)) return hr;
 441
 442     hr = IDirectDraw7_QueryInterface(pDD, iid, ppObj);
 443     IDirectDraw_Release(pDD);
 444     return hr;
 445 }
 446
 447 /******************************************************************************
 448  * DirectDraw ClassFactory
 449  */
 450 typedef struct {
 451     ICOM_VFIELD_MULTI(IClassFactory);
 452
 453     DWORD ref;
 454     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, REFIID iid,
 455                                  LPVOID *ppObj);
 456 } IClassFactoryImpl;
 457
 458 struct object_creation_info
 459 {
 460     const CLSID *clsid;
 461     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, REFIID riid,
 462                                  LPVOID *ppObj);
 463 };
 464
 465 /* There should be more, but these are the only ones listed in the header
 466  * file. */
 467 extern HRESULT DDRAW_CreateDirectDrawClipper(IUnknown *pUnkOuter, REFIID riid,
 468                                              LPVOID *ppObj);
 469
 470 static const struct object_creation_info object_creation[] =
 471 {
 472     { &CLSID_DirectDraw,        DDRAW_CreateDirectDraw },
 473     { &CLSID_DirectDraw7,       DDRAW_CreateDirectDraw },
 474     { &CLSID_DirectDrawClipper, DDRAW_CreateDirectDrawClipper }
 475 };
 476
 477 static HRESULT WINAPI
 478 DDCF_QueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
 479 {
 480     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 481
 482     TRACE("(%p)->(%s,%p)\n", This, debugstr_guid(riid), ppobj);
 483
 484     if (IsEqualGUID(riid, &IID_IUnknown)
 485         || IsEqualGUID(riid, &IID_IClassFactory))
 486     {
 487         IClassFactory_AddRef(iface);
 488         *ppobj = This;
 489         return S_OK;
 490     }
 491
 492     WARN("(%p)->(%s,%p),not found\n",This,debugstr_guid(riid),ppobj);
 493     return E_NOINTERFACE;
 494 }
 495
 496 static ULONG WINAPI DDCF_AddRef(LPCLASSFACTORY iface)
 497 {
 498     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 499
 500     TRACE("(%p)->() incrementing from %ld.\n", This, This->ref);
 501
 502     return InterlockedIncrement(&This->ref);
 503 }
 504
 505 static ULONG WINAPI DDCF_Release(LPCLASSFACTORY iface)
 506 {
 507     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 508     ULONG ref = InterlockedDecrement(&This->ref);
 509     TRACE("(%p)->() decrementing from %ld.\n", This, ref+1);
 510
 511     if (ref == 0)
 512         HeapFree(GetProcessHeap(), 0, This);
 513
 514     return ref;
 515 }
 516
 517
 518 static HRESULT WINAPI DDCF_CreateInstance(
 519         LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj
 520 )
 521 {
 522     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 523
 524     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 525
 526     return This->pfnCreateInstance(pOuter, riid, ppobj);
 527 }
 528
 529 static HRESULT WINAPI DDCF_LockServer(LPCLASSFACTORY iface,BOOL dolock)
 530 {
 531     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 532     FIXME("(%p)->(%d),stub!\n",This,dolock);
 533     return S_OK;
 534 }
 535
 536 static IClassFactoryVtbl DDCF_Vtbl =
 537 {
 538     DDCF_QueryInterface,
 539     DDCF_AddRef,
 540     DDCF_Release,
 541     DDCF_CreateInstance,
 542     DDCF_LockServer
 543 };
 544
 545 /*******************************************************************************
 546  * DllGetClassObject [DDRAW.@]
 547  * Retrieves class object from a DLL object
 548  *
 549  * NOTES
 550  *    Docs say returns STDAPI
 551  *
 552  * PARAMS
 553  *    rclsid [I] CLSID for the class object
 554  *    riid   [I] Reference to identifier of interface for class object
 555  *    ppv    [O] Address of variable to receive interface pointer for riid
 556  *
 557  * RETURNS
 558  *    Success: S_OK
 559  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 560  *             E_UNEXPECTED
 561  */
 562 DWORD WINAPI DDRAW_DllGetClassObject(REFCLSID rclsid,REFIID riid,LPVOID *ppv)
 563 {
 564     unsigned int i;
 565     IClassFactoryImpl *factory;
 566
 567     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 568
 569     if ( !IsEqualGUID( &IID_IClassFactory, riid )
 570          && ! IsEqualGUID( &IID_IUnknown, riid) )
 571         return E_NOINTERFACE;
 572
 573     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 574     {
 575         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 576             break;
 577     }
 578
 579     if (i == sizeof(object_creation)/sizeof(object_creation[0]))
 580     {
 581         FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 582         return CLASS_E_CLASSNOTAVAILABLE;
 583     }
 584
 585     factory = HeapAlloc(GetProcessHeap(), 0, sizeof(*factory));
 586     if (factory == NULL) return E_OUTOFMEMORY;
 587
 588     ICOM_INIT_INTERFACE(factory, IClassFactory, DDCF_Vtbl);
 589     factory->ref = 1;
 590
 591     factory->pfnCreateInstance = object_creation[i].pfnCreateInstance;
 592
 593     *ppv = ICOM_INTERFACE(factory, IClassFactory);
 594     return S_OK;
 595 }
 596
 597
 598 /*******************************************************************************
 599  * DllCanUnloadNow [DDRAW.@]  Determines whether the DLL is in use.
 600  *
 601  * RETURNS
 602  *    Success: S_OK
 603  *    Failure: S_FALSE
 604  */
 605 DWORD WINAPI DDRAW_DllCanUnloadNow(void) {
 606     FIXME("(void): stub\n");
 607     return S_FALSE;
 608 }
 609
 610 /******************************************************************************
 611  * Initialisation
 612  */
 613
 614 /* Choose which driver is considered the primary display driver. It will
 615  * be created when we get a NULL guid for the DirectDrawCreate(Ex). */
 616 static int DDRAW_ChooseDefaultDriver(void)
 617 {
 618     int i;
 619     int best = 0;
 620     int best_score = 0;
 621
 622     assert(DDRAW_num_drivers > 0);
 623
 624     /* This algorithm is really stupid. */
 625     for (i=0; i < DDRAW_num_drivers; i++)
 626     {
 627         if (DDRAW_drivers[i]->preference > best_score)
 628         {
 629             best_score = DDRAW_drivers[i]->preference;
 630             best = i;
 631         }
 632     }
 633
 634     assert(best_score > 0);
 635
 636     return best;
 637 }
 638
 639 /***********************************************************************
 640  *              DllMain (DDRAW.0)
 641  */
 642 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
 643 {
 644     /* If we were sufficiently cool, DDraw drivers would just be COM
 645      * objects, registered with a particular component category. */
 646
 647     DDRAW_HAL_Init(hInstDLL, fdwReason, lpv);
 648     DDRAW_User_Init(hInstDLL, fdwReason, lpv);
 649
 650     if (fdwReason == DLL_PROCESS_ATTACH)
 651     {
 652         HMODULE mod;
 653
 654         DisableThreadLibraryCalls(hInstDLL);
 655
 656         mod = GetModuleHandleA( "x11drv.dll" );
 657         if (mod)
 658         {
 659             wine_tsx11_lock_ptr   = (void *)GetProcAddress( mod, "wine_tsx11_lock" );
 660             wine_tsx11_unlock_ptr = (void *)GetProcAddress( mod, "wine_tsx11_unlock" );
 661         }
 662 #ifdef HAVE_OPENGL
 663         opengl_initialized = DDRAW_bind_to_opengl();
 664 #endif /* HAVE_OPENGL */
 665         s3tc_initialized = DDRAW_bind_to_s3tc();
 666     }
 667
 668     if (DDRAW_num_drivers > 0)
 669         DDRAW_default_driver = DDRAW_ChooseDefaultDriver();
 670
 671     return TRUE;
 672 }
 673
 674 /* Register a direct draw driver. This should be called from your init
 675  * function. (That's why there is no locking: your init func is called from
 676  * our DllInit, which is serialised.) */
 677 void DDRAW_register_driver(const ddraw_driver *driver)
 678 {
 679     int i;
 680
 681     for (i = 0; i < DDRAW_num_drivers; i++)
 682     {
 683         if (DDRAW_drivers[i] == driver)
 684         {
 685             ERR("Driver reregistering %p\n", driver);
 686             return;
 687         }
 688     }
 689
 690     if (DDRAW_num_drivers == sizeof(DDRAW_drivers)/sizeof(DDRAW_drivers[0]))
 691     {
 692         ERR("too many DDRAW drivers\n");
 693         return;
 694     }
 695
 696     DDRAW_drivers[DDRAW_num_drivers++] = driver;
 697 }
 698
 699 /* This totally doesn't belong here. */
 700 LONG DDRAW_width_bpp_to_pitch(DWORD width, DWORD bpp)
 701 {
 702     LONG pitch;
 703
 704     assert(bpp != 0); /* keeps happening... */
 705
 706     if (bpp == 15) bpp = 16;
 707     pitch = width * (bpp / 8);
 708     return pitch + (8 - (pitch % 8)) % 8;
 709 }