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authormarha <marha@users.sourceforge.net>2012-01-11 08:55:02 +0100
committermarha <marha@users.sourceforge.net>2012-01-11 08:57:05 +0100
commita73c45b7c72c6e426e1c75dd939f5481227b6979 (patch)
treeaba5ced82f492a7e28dfa683144dfbd6293d9613 /xorg-server/hw/xwin/winengine.c
parentd60b5206a10c9d547a7230a991593b516e412204 (diff)
parent38e661c7d82fa0b34fbe9b3f3261295787bb6427 (diff)
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Merge remote-tracking branch 'origin/released'
Conflicts: pixman/pixman/pixman-trap.c xorg-server/Xext/xace.c xorg-server/dix/dispatch.c xorg-server/hw/xwin/winclipboardthread.c xorg-server/hw/xwin/winengine.c xorg-server/hw/xwin/winwin32rootlesswindow.c xorg-server/include/dixstruct.h xorg-server/os/connection.c
Diffstat (limited to 'xorg-server/hw/xwin/winengine.c')
-rw-r--r--xorg-server/hw/xwin/winengine.c701
1 files changed, 349 insertions, 352 deletions
diff --git a/xorg-server/hw/xwin/winengine.c b/xorg-server/hw/xwin/winengine.c
index d9d0d476c..4b39bcfc2 100644
--- a/xorg-server/hw/xwin/winengine.c
+++ b/xorg-server/hw/xwin/winengine.c
@@ -1,352 +1,349 @@
-/*
- *Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved.
- *
- *Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- *"Software"), to deal in the Software without restriction, including
- *without limitation the rights to use, copy, modify, merge, publish,
- *distribute, sublicense, and/or sell copies of the Software, and to
- *permit persons to whom the Software is furnished to do so, subject to
- *the following conditions:
- *
- *The above copyright notice and this permission notice shall be
- *included in all copies or substantial portions of the Software.
- *
- *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
- *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
- *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- *Except as contained in this notice, the name of Harold L Hunt II
- *shall not be used in advertising or otherwise to promote the sale, use
- *or other dealings in this Software without prior written authorization
- *from Harold L Hunt II.
- *
- * Authors: Harold L Hunt II
- */
-
-#ifdef HAVE_XWIN_CONFIG_H
-#include <xwin-config.h>
-#endif
-#include "win.h"
-#include "winmsg.h"
-
-/*
- * Global variables for function pointers into
- * dynamically loaded libraries
- */
-FARPROC g_fpDirectDrawCreate = NULL;
-FARPROC g_fpDirectDrawCreateClipper = NULL;
-
-/*
- module handle for dynamically loaded directdraw library
-*/
-static HMODULE g_hmodDirectDraw = NULL;
-
-/*
- * Detect engines supported by current Windows version
- * DirectDraw version and hardware
- */
-
-void
-winDetectSupportedEngines (void)
-{
- OSVERSIONINFO osvi;
-
- /* Initialize the engine support flags */
- g_dwEnginesSupported = WIN_SERVER_SHADOW_GDI;
-
-#ifdef XWIN_NATIVEGDI
- g_dwEnginesSupported |= WIN_SERVER_NATIVE_GDI;
-#endif
-
- /* Get operating system version information */
- ZeroMemory (&osvi, sizeof (osvi));
- osvi.dwOSVersionInfoSize = sizeof (osvi);
- GetVersionEx (&osvi);
-
- /* Branch on platform ID */
- switch (osvi.dwPlatformId)
- {
- case VER_PLATFORM_WIN32_NT:
- /* Engine 4 is supported on NT only */
- winDebug ("winDetectSupportedEngines - Windows NT/2000/XP\n");
- break;
-
- case VER_PLATFORM_WIN32_WINDOWS:
- /* Engine 4 is supported on NT only */
- winDebug ("winDetectSupportedEngines - Windows 95/98/Me\n");
- break;
- }
-
- /* Do we have DirectDraw? */
- if (g_hmodDirectDraw != NULL)
- {
- LPDIRECTDRAW lpdd = NULL;
- LPDIRECTDRAW4 lpdd4 = NULL;
- HRESULT ddrval;
-
- /* Was the DirectDrawCreate function found? */
- if (g_fpDirectDrawCreate == NULL)
- {
- /* No DirectDraw support */
- return;
- }
-
- /* DirectDrawCreate exists, try to call it */
- /* Create a DirectDraw object, store the address at lpdd */
- ddrval = (*g_fpDirectDrawCreate) (NULL,
- (void**) &lpdd,
- NULL);
- if (FAILED (ddrval))
- {
- /* No DirectDraw support */
- winDebug ("winDetectSupportedEngines - DirectDraw not installed\n");
- return;
- }
- else
- {
- /* We have DirectDraw */
- winDebug ("winDetectSupportedEngines - DirectDraw installed\n");
- g_dwEnginesSupported |= WIN_SERVER_SHADOW_DD;
-
-#ifdef XWIN_PRIMARYFB
- /* Allow PrimaryDD engine if NT */
- if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
- {
- g_dwEnginesSupported |= WIN_SERVER_PRIMARY_DD;
- winDebug ("winDetectSupportedEngines - Allowing PrimaryDD\n");
- }
-#endif
- }
-
- /* Try to query for DirectDraw4 interface */
- ddrval = IDirectDraw_QueryInterface (lpdd,
- &IID_IDirectDraw4,
- (LPVOID*) &lpdd4);
- if (SUCCEEDED (ddrval))
- {
- /* We have DirectDraw4 */
- winDebug ("winDetectSupportedEngines - DirectDraw4 installed\n");
- g_dwEnginesSupported |= WIN_SERVER_SHADOW_DDNL;
- }
-
- /* Cleanup DirectDraw interfaces */
- if (lpdd4 != NULL)
- IDirectDraw_Release (lpdd4);
- if (lpdd != NULL)
- IDirectDraw_Release (lpdd);
- }
-
- winDebug ("winDetectSupportedEngines - Returning, supported engines %08x\n",
- (unsigned int) g_dwEnginesSupported);
-}
-
-
-/*
- * Set the engine type, depending on the engines
- * supported for this screen, and whether the user
- * suggested an engine type
- */
-
-Bool
-winSetEngine (ScreenPtr pScreen)
-{
- winScreenPriv(pScreen);
- winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
- HDC hdc;
- DWORD dwBPP;
-
- /* Get a DC */
- hdc = GetDC (NULL);
- if (hdc == NULL)
- {
- ErrorF ("winSetEngine - Couldn't get an HDC\n");
- return FALSE;
- }
-
- /*
- * pScreenInfo->dwBPP may be 0 to indicate that the current screen
- * depth is to be used. Thus, we must query for the current display
- * depth here.
- */
- dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
-
- /* Release the DC */
- ReleaseDC (NULL, hdc);
- hdc = NULL;
-
- /* ShadowGDI is the only engine that supports windowed PseudoColor */
- if (dwBPP == 8 && !pScreenInfo->fFullScreen)
- {
- winDebug ("winSetEngine - Windowed && PseudoColor => ShadowGDI\n");
- pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
-
- /* Set engine function pointers */
- winSetEngineFunctionsShadowGDI (pScreen);
- return TRUE;
- }
-
- /* ShadowGDI is the only engine that supports Multi Window Mode */
- if (
-#ifdef XWIN_MULTIWINDOWEXTWM
- pScreenInfo->fMWExtWM
-#else
- FALSE
-#endif
-#ifdef XWIN_MULTIWINDOW
- || pScreenInfo->fMultiWindow
-#else
- || FALSE
-#endif
- )
- {
- winDebug ("winSetEngine - Multi Window or Rootless => ShadowGDI\n");
- pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
-
- /* Set engine function pointers */
- winSetEngineFunctionsShadowGDI (pScreen);
- return TRUE;
- }
-
- /* If there is a user's choice, we'll use that */
- if (pScreenInfo->dwEnginePreferred)
- {
- winDebug ("winSetEngine - Using user's preference: %d\n",
- (int) pScreenInfo->dwEnginePreferred);
- pScreenInfo->dwEngine = pScreenInfo->dwEnginePreferred;
-
- /* Setup engine function pointers */
- switch (pScreenInfo->dwEngine)
- {
- case WIN_SERVER_SHADOW_GDI:
- winSetEngineFunctionsShadowGDI (pScreen);
- break;
- case WIN_SERVER_SHADOW_DD:
- winSetEngineFunctionsShadowDD (pScreen);
- break;
- case WIN_SERVER_SHADOW_DDNL:
- winSetEngineFunctionsShadowDDNL (pScreen);
- break;
-#ifdef XWIN_PRIMARYFB
- case WIN_SERVER_PRIMARY_DD:
- winSetEngineFunctionsPrimaryDD (pScreen);
- break;
-#endif
-#ifdef XWIN_NATIVEGDI
- case WIN_SERVER_NATIVE_GDI:
- winSetEngineFunctionsNativeGDI (pScreen);
- break;
-#endif
- default:
- FatalError ("winSetEngine - Invalid engine type %d\n",pScreenInfo->dwEngine);
- }
- return TRUE;
- }
-
- /* ShadowDDNL has good performance, so why not */
- if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL)
- {
- winDebug ("winSetEngine - Using Shadow DirectDraw NonLocking\n");
- pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DDNL;
-
- /* Set engine function pointers */
- winSetEngineFunctionsShadowDDNL (pScreen);
- return TRUE;
- }
-
- /* ShadowDD is next in line */
- if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DD)
- {
- winDebug ("winSetEngine - Using Shadow DirectDraw\n");
- pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DD;
-
- /* Set engine function pointers */
- winSetEngineFunctionsShadowDD (pScreen);
- return TRUE;
- }
-
- /* ShadowGDI is next in line */
- if (g_dwEnginesSupported & WIN_SERVER_SHADOW_GDI)
- {
- winDebug ("winSetEngine - Using Shadow GDI DIB\n");
- pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
-
- /* Set engine function pointers */
- winSetEngineFunctionsShadowGDI (pScreen);
- return TRUE;
- }
-
- return TRUE;
-}
-
-
-/*
- * Get procedure addresses for DirectDrawCreate and DirectDrawCreateClipper
- */
-
-Bool
-winGetDDProcAddresses (void)
-{
- Bool fReturn = TRUE;
-
- /* Load the DirectDraw library */
- g_hmodDirectDraw = LoadLibraryEx ("ddraw.dll", NULL, 0);
- if (g_hmodDirectDraw == NULL)
- {
- ErrorF ("winGetDDProcAddresses - Could not load ddraw.dll\n");
- fReturn = TRUE;
- goto winGetDDProcAddresses_Exit;
- }
-
- /* Try to get the DirectDrawCreate address */
- g_fpDirectDrawCreate = GetProcAddress (g_hmodDirectDraw,
- "DirectDrawCreate");
- if (g_fpDirectDrawCreate == NULL)
- {
- ErrorF ("winGetDDProcAddresses - Could not get DirectDrawCreate "
- "address\n");
- fReturn = TRUE;
- goto winGetDDProcAddresses_Exit;
- }
-
- /* Try to get the DirectDrawCreateClipper address */
- g_fpDirectDrawCreateClipper = GetProcAddress (g_hmodDirectDraw,
- "DirectDrawCreateClipper");
- if (g_fpDirectDrawCreateClipper == NULL)
- {
- ErrorF ("winGetDDProcAddresses - Could not get "
- "DirectDrawCreateClipper address\n");
- fReturn = FALSE;
- goto winGetDDProcAddresses_Exit;
- }
-
- /*
- * Note: Do not unload ddraw.dll here. Do it in GiveUp
- */
-
- winGetDDProcAddresses_Exit:
- /* Unload the DirectDraw library if we failed to initialize */
- if (!fReturn && g_hmodDirectDraw != NULL)
- {
- FreeLibrary (g_hmodDirectDraw);
- g_hmodDirectDraw = NULL;
- }
-
- return fReturn;
-}
-
-void
-winReleaseDDProcAddresses(void)
-{
- if (g_hmodDirectDraw != NULL)
- {
- FreeLibrary (g_hmodDirectDraw);
- g_hmodDirectDraw = NULL;
- g_fpDirectDrawCreate = NULL;
- g_fpDirectDrawCreateClipper = NULL;
- }
-}
+/*
+ *Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved.
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *The above copyright notice and this permission notice shall be
+ *included in all copies or substantial portions of the Software.
+ *
+ *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
+ *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *Except as contained in this notice, the name of Harold L Hunt II
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from Harold L Hunt II.
+ *
+ * Authors: Harold L Hunt II
+ */
+
+#ifdef HAVE_XWIN_CONFIG_H
+#include <xwin-config.h>
+#endif
+#include "win.h"
+#include "winmsg.h"
+
+/*
+ * Global variables for function pointers into
+ * dynamically loaded libraries
+ */
+FARPROC g_fpDirectDrawCreate = NULL;
+FARPROC g_fpDirectDrawCreateClipper = NULL;
+
+/*
+ module handle for dynamically loaded directdraw library
+*/
+static HMODULE g_hmodDirectDraw = NULL;
+
+/*
+ * Detect engines supported by current Windows version
+ * DirectDraw version and hardware
+ */
+
+void
+winDetectSupportedEngines (void)
+{
+ OSVERSIONINFO osvi;
+
+ /* Initialize the engine support flags */
+ g_dwEnginesSupported = WIN_SERVER_SHADOW_GDI;
+
+#ifdef XWIN_NATIVEGDI
+ g_dwEnginesSupported |= WIN_SERVER_NATIVE_GDI;
+#endif
+
+ /* Get operating system version information */
+ ZeroMemory (&osvi, sizeof (osvi));
+ osvi.dwOSVersionInfoSize = sizeof (osvi);
+ GetVersionEx (&osvi);
+
+ /* Branch on platform ID */
+ switch (osvi.dwPlatformId)
+ {
+ case VER_PLATFORM_WIN32_NT:
+ /* Engine 4 is supported on NT only */
+ winDebug ("winDetectSupportedEngines - Windows NT/2000/XP\n");
+ break;
+
+ case VER_PLATFORM_WIN32_WINDOWS:
+ /* Engine 4 is supported on NT only */
+ winDebug ("winDetectSupportedEngines - Windows 95/98/Me\n");
+ break;
+ }
+
+ /* Do we have DirectDraw? */
+ if (g_hmodDirectDraw != NULL)
+ {
+ LPDIRECTDRAW lpdd = NULL;
+ LPDIRECTDRAW4 lpdd4 = NULL;
+ HRESULT ddrval;
+
+ /* Was the DirectDrawCreate function found? */
+ if (g_fpDirectDrawCreate == NULL)
+ {
+ /* No DirectDraw support */
+ return;
+ }
+
+ /* DirectDrawCreate exists, try to call it */
+ /* Create a DirectDraw object, store the address at lpdd */
+ ddrval = (*g_fpDirectDrawCreate) (NULL,
+ (void**) &lpdd,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ /* No DirectDraw support */
+ winDebug ("winDetectSupportedEngines - DirectDraw not installed\n");
+ return;
+ }
+ else
+ {
+ /* We have DirectDraw */
+ winDebug ("winDetectSupportedEngines - DirectDraw installed\n");
+ g_dwEnginesSupported |= WIN_SERVER_SHADOW_DD;
+
+#ifdef XWIN_PRIMARYFB
+ /* Allow PrimaryDD engine if NT */
+ if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
+ {
+ g_dwEnginesSupported |= WIN_SERVER_PRIMARY_DD;
+ winDebug ("winDetectSupportedEngines - Allowing PrimaryDD\n");
+ }
+#endif
+ }
+
+ /* Try to query for DirectDraw4 interface */
+ ddrval = IDirectDraw_QueryInterface (lpdd,
+ &IID_IDirectDraw4,
+ (LPVOID*) &lpdd4);
+ if (SUCCEEDED (ddrval))
+ {
+ /* We have DirectDraw4 */
+ winDebug ("winDetectSupportedEngines - DirectDraw4 installed\n");
+ g_dwEnginesSupported |= WIN_SERVER_SHADOW_DDNL;
+ }
+
+ /* Cleanup DirectDraw interfaces */
+ if (lpdd4 != NULL)
+ IDirectDraw_Release (lpdd4);
+ if (lpdd != NULL)
+ IDirectDraw_Release (lpdd);
+ }
+
+ winDebug ("winDetectSupportedEngines - Returning, supported engines %08x\n",
+ (unsigned int) g_dwEnginesSupported);
+}
+
+
+/*
+ * Set the engine type, depending on the engines
+ * supported for this screen, and whether the user
+ * suggested an engine type
+ */
+
+Bool
+winSetEngine (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ HDC hdc;
+ DWORD dwBPP;
+
+ /* Get a DC */
+ hdc = GetDC (NULL);
+ if (hdc == NULL)
+ {
+ ErrorF ("winSetEngine - Couldn't get an HDC\n");
+ return FALSE;
+ }
+
+ /*
+ * pScreenInfo->dwBPP may be 0 to indicate that the current screen
+ * depth is to be used. Thus, we must query for the current display
+ * depth here.
+ */
+ dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
+
+ /* Release the DC */
+ ReleaseDC (NULL, hdc);
+ hdc = NULL;
+
+ /* ShadowGDI is the only engine that supports windowed PseudoColor */
+ if (dwBPP == 8 && !pScreenInfo->fFullScreen)
+ {
+ winDebug ("winSetEngine - Windowed && PseudoColor => ShadowGDI\n");
+ pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
+
+ /* Set engine function pointers */
+ winSetEngineFunctionsShadowGDI (pScreen);
+ return TRUE;
+ }
+
+ /* ShadowGDI is the only engine that supports Multi Window Mode */
+ if (
+ FALSE
+#ifdef XWIN_MULTIWINDOWEXTWM
+ || pScreenInfo->fMWExtWM
+#endif
+#ifdef XWIN_MULTIWINDOW
+ || pScreenInfo->fMultiWindow
+#endif
+ )
+ {
+ winDebug ("winSetEngine - Multi Window or Rootless => ShadowGDI\n");
+ pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
+
+ /* Set engine function pointers */
+ winSetEngineFunctionsShadowGDI (pScreen);
+ return TRUE;
+ }
+
+ /* If there is a user's choice, we'll use that */
+ if (pScreenInfo->dwEnginePreferred)
+ {
+ winDebug ("winSetEngine - Using user's preference: %d\n",
+ (int) pScreenInfo->dwEnginePreferred);
+ pScreenInfo->dwEngine = pScreenInfo->dwEnginePreferred;
+
+ /* Setup engine function pointers */
+ switch (pScreenInfo->dwEngine)
+ {
+ case WIN_SERVER_SHADOW_GDI:
+ winSetEngineFunctionsShadowGDI (pScreen);
+ break;
+ case WIN_SERVER_SHADOW_DD:
+ winSetEngineFunctionsShadowDD (pScreen);
+ break;
+ case WIN_SERVER_SHADOW_DDNL:
+ winSetEngineFunctionsShadowDDNL (pScreen);
+ break;
+#ifdef XWIN_PRIMARYFB
+ case WIN_SERVER_PRIMARY_DD:
+ winSetEngineFunctionsPrimaryDD (pScreen);
+ break;
+#endif
+#ifdef XWIN_NATIVEGDI
+ case WIN_SERVER_NATIVE_GDI:
+ winSetEngineFunctionsNativeGDI (pScreen);
+ break;
+#endif
+ default:
+ FatalError ("winSetEngine - Invalid engine type %d\n",pScreenInfo->dwEngine);
+ }
+ return TRUE;
+ }
+
+ /* ShadowDDNL has good performance, so why not */
+ if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL)
+ {
+ winDebug ("winSetEngine - Using Shadow DirectDraw NonLocking\n");
+ pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DDNL;
+
+ /* Set engine function pointers */
+ winSetEngineFunctionsShadowDDNL (pScreen);
+ return TRUE;
+ }
+
+ /* ShadowDD is next in line */
+ if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DD)
+ {
+ winDebug ("winSetEngine - Using Shadow DirectDraw\n");
+ pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DD;
+
+ /* Set engine function pointers */
+ winSetEngineFunctionsShadowDD (pScreen);
+ return TRUE;
+ }
+
+ /* ShadowGDI is next in line */
+ if (g_dwEnginesSupported & WIN_SERVER_SHADOW_GDI)
+ {
+ winDebug ("winSetEngine - Using Shadow GDI DIB\n");
+ pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
+
+ /* Set engine function pointers */
+ winSetEngineFunctionsShadowGDI (pScreen);
+ return TRUE;
+ }
+
+ return TRUE;
+}
+
+
+/*
+ * Get procedure addresses for DirectDrawCreate and DirectDrawCreateClipper
+ */
+
+Bool
+winGetDDProcAddresses (void)
+{
+ Bool fReturn = TRUE;
+
+ /* Load the DirectDraw library */
+ g_hmodDirectDraw = LoadLibraryEx ("ddraw.dll", NULL, 0);
+ if (g_hmodDirectDraw == NULL)
+ {
+ ErrorF ("winGetDDProcAddresses - Could not load ddraw.dll\n");
+ fReturn = TRUE;
+ goto winGetDDProcAddresses_Exit;
+ }
+
+ /* Try to get the DirectDrawCreate address */
+ g_fpDirectDrawCreate = GetProcAddress (g_hmodDirectDraw,
+ "DirectDrawCreate");
+ if (g_fpDirectDrawCreate == NULL)
+ {
+ ErrorF ("winGetDDProcAddresses - Could not get DirectDrawCreate "
+ "address\n");
+ fReturn = TRUE;
+ goto winGetDDProcAddresses_Exit;
+ }
+
+ /* Try to get the DirectDrawCreateClipper address */
+ g_fpDirectDrawCreateClipper = GetProcAddress (g_hmodDirectDraw,
+ "DirectDrawCreateClipper");
+ if (g_fpDirectDrawCreateClipper == NULL)
+ {
+ ErrorF ("winGetDDProcAddresses - Could not get "
+ "DirectDrawCreateClipper address\n");
+ fReturn = FALSE;
+ goto winGetDDProcAddresses_Exit;
+ }
+
+ /*
+ * Note: Do not unload ddraw.dll here. Do it in GiveUp
+ */
+
+ winGetDDProcAddresses_Exit:
+ /* Unload the DirectDraw library if we failed to initialize */
+ if (!fReturn && g_hmodDirectDraw != NULL)
+ {
+ FreeLibrary (g_hmodDirectDraw);
+ g_hmodDirectDraw = NULL;
+ }
+
+ return fReturn;
+}
+
+void
+winReleaseDDProcAddresses(void)
+{
+ if (g_hmodDirectDraw != NULL)
+ {
+ FreeLibrary (g_hmodDirectDraw);
+ g_hmodDirectDraw = NULL;
+ g_fpDirectDrawCreate = NULL;
+ g_fpDirectDrawCreateClipper = NULL;
+ }
+}