353 lines
9.4 KiB
C
353 lines
9.4 KiB
C
/*
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*Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved.
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*
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*Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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*"Software"), to deal in the Software without restriction, including
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*without limitation the rights to use, copy, modify, merge, publish,
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*distribute, sublicense, and/or sell copies of the Software, and to
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*permit persons to whom the Software is furnished to do so, subject to
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*the following conditions:
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*
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*The above copyright notice and this permission notice shall be
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*included in all copies or substantial portions of the Software.
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*
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*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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*EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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*MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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*NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
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*ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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*CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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*WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*Except as contained in this notice, the name of Harold L Hunt II
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*shall not be used in advertising or otherwise to promote the sale, use
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*or other dealings in this Software without prior written authorization
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*from Harold L Hunt II.
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*
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* Authors: Harold L Hunt II
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*/
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#ifdef HAVE_XWIN_CONFIG_H
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#include <xwin-config.h>
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#endif
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#include "win.h"
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#include "winmsg.h"
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/*
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* Global variables for function pointers into
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* dynamically loaded libraries
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*/
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FARPROC g_fpDirectDrawCreate = NULL;
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FARPROC g_fpDirectDrawCreateClipper = NULL;
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/*
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module handle for dynamically loaded directdraw library
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*/
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static HMODULE g_hmodDirectDraw = NULL;
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/*
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* Detect engines supported by current Windows version
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* DirectDraw version and hardware
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*/
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void
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winDetectSupportedEngines (void)
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{
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OSVERSIONINFO osvi;
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/* Initialize the engine support flags */
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g_dwEnginesSupported = WIN_SERVER_SHADOW_GDI;
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#ifdef XWIN_NATIVEGDI
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g_dwEnginesSupported |= WIN_SERVER_NATIVE_GDI;
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#endif
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/* Get operating system version information */
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ZeroMemory (&osvi, sizeof (osvi));
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osvi.dwOSVersionInfoSize = sizeof (osvi);
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GetVersionEx (&osvi);
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/* Branch on platform ID */
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switch (osvi.dwPlatformId)
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{
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case VER_PLATFORM_WIN32_NT:
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/* Engine 4 is supported on NT only */
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winErrorFVerb (2, "winDetectSupportedEngines - Windows NT/2000/XP\n");
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break;
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case VER_PLATFORM_WIN32_WINDOWS:
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/* Engine 4 is supported on NT only */
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winErrorFVerb (2, "winDetectSupportedEngines - Windows 95/98/Me\n");
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break;
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}
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/* Do we have DirectDraw? */
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if (g_hmodDirectDraw != NULL)
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{
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LPDIRECTDRAW lpdd = NULL;
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LPDIRECTDRAW4 lpdd4 = NULL;
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HRESULT ddrval;
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/* Was the DirectDrawCreate function found? */
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if (g_fpDirectDrawCreate == NULL)
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{
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/* No DirectDraw support */
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return;
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}
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/* DirectDrawCreate exists, try to call it */
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/* Create a DirectDraw object, store the address at lpdd */
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ddrval = (*g_fpDirectDrawCreate) (NULL,
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(void**) &lpdd,
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NULL);
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if (FAILED (ddrval))
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{
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/* No DirectDraw support */
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winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw not installed\n");
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return;
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}
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else
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{
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/* We have DirectDraw */
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winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw installed\n");
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g_dwEnginesSupported |= WIN_SERVER_SHADOW_DD;
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#ifdef XWIN_PRIMARYFB
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/* Allow PrimaryDD engine if NT */
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if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
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{
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g_dwEnginesSupported |= WIN_SERVER_PRIMARY_DD;
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winErrorFVerb (2, "winDetectSupportedEngines - Allowing PrimaryDD\n");
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}
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#endif
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}
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/* Try to query for DirectDraw4 interface */
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ddrval = IDirectDraw_QueryInterface (lpdd,
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&IID_IDirectDraw4,
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(LPVOID*) &lpdd4);
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if (SUCCEEDED (ddrval))
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{
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/* We have DirectDraw4 */
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winErrorFVerb (2, "winDetectSupportedEngines - DirectDraw4 installed\n");
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g_dwEnginesSupported |= WIN_SERVER_SHADOW_DDNL;
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}
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/* Cleanup DirectDraw interfaces */
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if (lpdd4 != NULL)
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IDirectDraw_Release (lpdd4);
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if (lpdd != NULL)
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IDirectDraw_Release (lpdd);
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}
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winErrorFVerb (2, "winDetectSupportedEngines - Returning, supported engines %08x\n",
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(unsigned int) g_dwEnginesSupported);
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}
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/*
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* Set the engine type, depending on the engines
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* supported for this screen, and whether the user
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* suggested an engine type
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*/
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Bool
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winSetEngine (ScreenPtr pScreen)
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{
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winScreenPriv(pScreen);
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winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
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HDC hdc;
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DWORD dwBPP;
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/* Get a DC */
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hdc = GetDC (NULL);
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if (hdc == NULL)
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{
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ErrorF ("winSetEngine - Couldn't get an HDC\n");
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return FALSE;
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}
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/*
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* pScreenInfo->dwBPP may be 0 to indicate that the current screen
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* depth is to be used. Thus, we must query for the current display
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* depth here.
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*/
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dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
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/* Release the DC */
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ReleaseDC (NULL, hdc);
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hdc = NULL;
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/* ShadowGDI is the only engine that supports windowed PseudoColor */
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if (dwBPP == 8 && !pScreenInfo->fFullScreen)
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{
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winErrorFVerb (2, "winSetEngine - Windowed && PseudoColor => ShadowGDI\n");
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pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
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/* Set engine function pointers */
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winSetEngineFunctionsShadowGDI (pScreen);
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return TRUE;
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}
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/* ShadowGDI is the only engine that supports Multi Window Mode */
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if (
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#ifdef XWIN_MULTIWINDOWEXTWM
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pScreenInfo->fMWExtWM
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#else
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FALSE
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#endif
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#ifdef XWIN_MULTIWINDOW
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|| pScreenInfo->fMultiWindow
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#else
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|| FALSE
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#endif
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)
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{
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winErrorFVerb (2, "winSetEngine - Multi Window or Rootless => ShadowGDI\n");
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pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
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/* Set engine function pointers */
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winSetEngineFunctionsShadowGDI (pScreen);
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return TRUE;
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}
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/* If the user's choice is supported, we'll use that */
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if (g_dwEnginesSupported & pScreenInfo->dwEnginePreferred)
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{
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winErrorFVerb (2, "winSetEngine - Using user's preference: %d\n",
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(int) pScreenInfo->dwEnginePreferred);
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pScreenInfo->dwEngine = pScreenInfo->dwEnginePreferred;
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/* Setup engine function pointers */
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switch (pScreenInfo->dwEngine)
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{
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case WIN_SERVER_SHADOW_GDI:
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winSetEngineFunctionsShadowGDI (pScreen);
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break;
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case WIN_SERVER_SHADOW_DD:
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winSetEngineFunctionsShadowDD (pScreen);
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break;
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case WIN_SERVER_SHADOW_DDNL:
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winSetEngineFunctionsShadowDDNL (pScreen);
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break;
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#ifdef XWIN_PRIMARYFB
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case WIN_SERVER_PRIMARY_DD:
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winSetEngineFunctionsPrimaryDD (pScreen);
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break;
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#endif
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#ifdef XWIN_NATIVEGDI
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case WIN_SERVER_NATIVE_GDI:
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winSetEngineFunctionsNativeGDI (pScreen);
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break;
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#endif
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default:
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FatalError ("winSetEngine - Invalid engine type\n");
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}
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return TRUE;
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}
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/* ShadowDDNL has good performance, so why not */
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if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DDNL)
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{
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winErrorFVerb (2, "winSetEngine - Using Shadow DirectDraw NonLocking\n");
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pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DDNL;
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/* Set engine function pointers */
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winSetEngineFunctionsShadowDDNL (pScreen);
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return TRUE;
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}
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/* ShadowDD is next in line */
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if (g_dwEnginesSupported & WIN_SERVER_SHADOW_DD)
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{
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winErrorFVerb (2, "winSetEngine - Using Shadow DirectDraw\n");
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pScreenInfo->dwEngine = WIN_SERVER_SHADOW_DD;
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/* Set engine function pointers */
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winSetEngineFunctionsShadowDD (pScreen);
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return TRUE;
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}
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/* ShadowGDI is next in line */
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if (g_dwEnginesSupported & WIN_SERVER_SHADOW_GDI)
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{
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winErrorFVerb (2, "winSetEngine - Using Shadow GDI DIB\n");
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pScreenInfo->dwEngine = WIN_SERVER_SHADOW_GDI;
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/* Set engine function pointers */
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winSetEngineFunctionsShadowGDI (pScreen);
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return TRUE;
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}
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return TRUE;
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}
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/*
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* Get procedure addresses for DirectDrawCreate and DirectDrawCreateClipper
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*/
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Bool
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winGetDDProcAddresses (void)
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{
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Bool fReturn = TRUE;
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/* Load the DirectDraw library */
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g_hmodDirectDraw = LoadLibraryEx ("ddraw.dll", NULL, 0);
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if (g_hmodDirectDraw == NULL)
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{
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ErrorF ("winGetDDProcAddresses - Could not load ddraw.dll\n");
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fReturn = TRUE;
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goto winGetDDProcAddresses_Exit;
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}
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/* Try to get the DirectDrawCreate address */
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g_fpDirectDrawCreate = GetProcAddress (g_hmodDirectDraw,
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"DirectDrawCreate");
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if (g_fpDirectDrawCreate == NULL)
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{
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ErrorF ("winGetDDProcAddresses - Could not get DirectDrawCreate "
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"address\n");
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fReturn = TRUE;
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goto winGetDDProcAddresses_Exit;
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}
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/* Try to get the DirectDrawCreateClipper address */
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g_fpDirectDrawCreateClipper = GetProcAddress (g_hmodDirectDraw,
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"DirectDrawCreateClipper");
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if (g_fpDirectDrawCreateClipper == NULL)
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{
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ErrorF ("winGetDDProcAddresses - Could not get "
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"DirectDrawCreateClipper address\n");
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fReturn = FALSE;
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goto winGetDDProcAddresses_Exit;
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}
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/*
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* Note: Do not unload ddraw.dll here. Do it in GiveUp
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*/
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winGetDDProcAddresses_Exit:
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/* Unload the DirectDraw library if we failed to initialize */
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if (!fReturn && g_hmodDirectDraw != NULL)
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{
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FreeLibrary (g_hmodDirectDraw);
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g_hmodDirectDraw = NULL;
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}
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return fReturn;
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}
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void
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winReleaseDDProcAddresses(void)
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{
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if (g_hmodDirectDraw != NULL)
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{
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FreeLibrary (g_hmodDirectDraw);
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g_hmodDirectDraw = NULL;
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g_fpDirectDrawCreate = NULL;
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g_fpDirectDrawCreateClipper = NULL;
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}
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}
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