/* *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 */ winErrorFVerb (2, "winDetectSupportedEngines - Windows NT/2000/XP\n"); break; case VER_PLATFORM_WIN32_WINDOWS: /* Engine 4 is supported on NT only */ winErrorFVerb (2, "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 */ winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw not installed\n"); return; } else { /* We have DirectDraw */ winErrorFVerb (2, "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; winErrorFVerb (2, "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 */ winErrorFVerb (2, "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); } winErrorFVerb (2, "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) { winErrorFVerb (2, "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 ) { winErrorFVerb (2, "winSetEngine - Multi Window or Rootless => ShadowGDI\n"); pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI; /* Set engine function pointers */ winSetEngineFunctionsShadowGDI (pScreen); return TRUE; } /* If the user's choice is supported, we'll use that */ if (g_dwEnginesSupported & pScreenInfo->dwEnginePreferred) { winErrorFVerb (2, "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\n"); } return TRUE; } /* ShadowDDNL has good performance, so why not */ if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL) { winErrorFVerb (2, "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) { winErrorFVerb (2, "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) { winErrorFVerb (2, "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; } }