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-rw-r--r--hw/xwin/winshadddnl.c1288
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diff --git a/hw/xwin/winshadddnl.c b/hw/xwin/winshadddnl.c
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+++ b/hw/xwin/winshadddnl.c
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+/*
+ *Copyright (C) 1994-2000 The XFree86 Project, Inc. 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 THE XFREE86 PROJECT 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 the XFree86 Project
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from the XFree86 Project.
+ *
+ * Authors: Dakshinamurthy Karra
+ * Suhaib M Siddiqi
+ * Peter Busch
+ * Harold L Hunt II
+ */
+/* $XFree86: xc/programs/Xserver/hw/xwin/winshadddnl.c,v 1.24 2003/02/12 15:01:38 alanh Exp $ */
+
+#include "win.h"
+
+/*
+ * FIXME: Headers are broken, DEFINE_GUID doesn't work correctly,
+ * so we have to redefine it here.
+ */
+#ifdef DEFINE_GUID
+#undef DEFINE_GUID
+#define DEFINE_GUID(n,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8) GUID_EXT const GUID n GUID_SECT = {l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}}
+#endif /* DEFINE_GUID */
+
+/*
+ * FIXME: Headers are broken, IID_IDirectDraw4 has to be defined
+ * here manually. Should be handled by ddraw.h
+ */
+#ifndef IID_IDirectDraw4
+DEFINE_GUID( IID_IDirectDraw4, 0x9c59509a,0x39bd,0x11d1,0x8c,0x4a,0x00,0xc0,0x4f,0xd9,0x30,0xc5 );
+#endif /* IID_IDirectDraw4 */
+
+
+/*
+ * Create the primary surface and attach the clipper.
+ * Used for both the initial surface creation and during
+ * WM_DISPLAYCHANGE messages.
+ */
+
+Bool
+winCreatePrimarySurfaceShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ HRESULT ddrval = DD_OK;
+ DDSURFACEDESC2 ddsd;
+
+ ErrorF ("winCreatePrimarySurfaceShadowDDNL - Creating primary surface\n");
+
+ /* Describe the primary surface */
+ ZeroMemory (&ddsd, sizeof (ddsd));
+ ddsd.dwSize = sizeof (ddsd);
+ ddsd.dwFlags = DDSD_CAPS;
+ ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
+
+ /* Create the primary surface */
+ ddrval = IDirectDraw4_CreateSurface (pScreenPriv->pdd4,
+ &ddsd,
+ &pScreenPriv->pddsPrimary4,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winCreatePrimarySurfaceShadowDDNL - Could not create primary "
+ "surface: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+#if 1
+ ErrorF ("winCreatePrimarySurfaceShadowDDNL - Created primary surface\n");
+#endif
+
+ /* Attach our clipper to our primary surface handle */
+ ddrval = IDirectDrawSurface4_SetClipper (pScreenPriv->pddsPrimary4,
+ pScreenPriv->pddcPrimary);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winCreatePrimarySurfaceShadowDDNL - Primary attach clipper "
+ "failed: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+#if 1
+ ErrorF ("winCreatePrimarySurfaceShadowDDNL - Attached clipper to primary "
+ "surface\n");
+#endif
+
+ /* Everything was correct */
+ return TRUE;
+}
+
+
+/*
+ * Detach the clipper and release the primary surface.
+ * Called from WM_DISPLAYCHANGE.
+ */
+
+Bool
+winReleasePrimarySurfaceShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+
+ ErrorF ("winReleasePrimarySurfaceShadowDDNL - Hello\n");
+
+ /* Release the primary surface and clipper, if they exist */
+ if (pScreenPriv->pddsPrimary4)
+ {
+ /*
+ * Detach the clipper from the primary surface.
+ * NOTE: We do this explicity for clarity. The Clipper is not released.
+ */
+ IDirectDrawSurface4_SetClipper (pScreenPriv->pddsPrimary4,
+ NULL);
+
+ ErrorF ("winReleasePrimarySurfaceShadowDDNL - Detached clipper\n");
+
+ /* Release the primary surface */
+ IDirectDrawSurface4_Release (pScreenPriv->pddsPrimary4);
+ pScreenPriv->pddsPrimary4 = NULL;
+ }
+
+ ErrorF ("winReleasePrimarySurfaceShadowDDNL - Released primary surface\n");
+
+ return TRUE;
+}
+
+
+/*
+ * Create a DirectDraw surface for the shadow framebuffer; also create
+ * a primary surface object so we can blit to the display.
+ *
+ * Install a DirectDraw clipper on our primary surface object
+ * that clips our blits to the unobscured client area of our display window.
+ */
+
+Bool
+winAllocateFBShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ HRESULT ddrval = DD_OK;
+ DDSURFACEDESC2 ddsdShadow;
+ char *lpSurface = NULL;
+ DDPIXELFORMAT ddpfPrimary;
+
+#if CYGDEBUG
+ ErrorF ("winAllocateFBShadowDDNL - w %d h %d d %d\n",
+ pScreenInfo->dwWidth, pScreenInfo->dwHeight, pScreenInfo->dwDepth);
+#endif
+
+ /* Allocate memory for our shadow surface */
+ lpSurface = malloc (pScreenInfo->dwPaddedWidth * pScreenInfo->dwHeight);
+ if (lpSurface == NULL)
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not allocate bits\n");
+ return FALSE;
+ }
+
+ /*
+ * Initialize the framebuffer memory so we don't get a
+ * strange display at startup
+ */
+ ZeroMemory (lpSurface, pScreenInfo->dwPaddedWidth * pScreenInfo->dwHeight);
+
+ /* Create a clipper */
+ ddrval = (*g_fpDirectDrawCreateClipper) (0,
+ &pScreenPriv->pddcPrimary,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not attach clipper: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+#if CYGDEBUG
+ ErrorF ("winAllocateFBShadowDDNL - Created a clipper\n");
+#endif
+
+ /* Get a device context for the screen */
+ pScreenPriv->hdcScreen = GetDC (pScreenPriv->hwndScreen);
+
+ /* Attach the clipper to our display window */
+ ddrval = IDirectDrawClipper_SetHWnd (pScreenPriv->pddcPrimary,
+ 0,
+ pScreenPriv->hwndScreen);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Clipper not attached "
+ "to window: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+#if CYGDEBUG
+ ErrorF ("winAllocateFBShadowDDNL - Attached clipper to window\n");
+#endif
+
+ /* Create a DirectDraw object, store the address at lpdd */
+ ddrval = (*g_fpDirectDrawCreate) (NULL,
+ (LPDIRECTDRAW*) &pScreenPriv->pdd,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not start "
+ "DirectDraw: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+#if CYGDEBUG
+ ErrorF ("winAllocateFBShadowDDNL - Created and initialized DD\n");
+#endif
+
+ /* Get a DirectDraw4 interface pointer */
+ ddrval = IDirectDraw_QueryInterface (pScreenPriv->pdd,
+ &IID_IDirectDraw4,
+ (LPVOID*) &pScreenPriv->pdd4);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Failed DD4 query: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+ /* Are we full screen? */
+ if (pScreenInfo->fFullScreen)
+ {
+ DDSURFACEDESC2 ddsdCurrent;
+ DWORD dwRefreshRateCurrent = 0;
+ HDC hdc = NULL;
+
+ /* Set the cooperative level to full screen */
+ ddrval = IDirectDraw4_SetCooperativeLevel (pScreenPriv->pdd4,
+ pScreenPriv->hwndScreen,
+ DDSCL_EXCLUSIVE
+ | DDSCL_FULLSCREEN);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not set "
+ "cooperative level: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+ /*
+ * We only need to get the current refresh rate for comparison
+ * if a refresh rate has been passed on the command line.
+ */
+ if (pScreenInfo->dwRefreshRate != 0)
+ {
+ ZeroMemory (&ddsdCurrent, sizeof (ddsdCurrent));
+ ddsdCurrent.dwSize = sizeof (ddsdCurrent);
+
+ /* Get information about current display settings */
+ ddrval = IDirectDraw4_GetDisplayMode (pScreenPriv->pdd4,
+ &ddsdCurrent);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not get current "
+ "refresh rate: %08x. Continuing.\n",
+ ddrval);
+ dwRefreshRateCurrent = 0;
+ }
+ else
+ {
+ /* Grab the current refresh rate */
+ dwRefreshRateCurrent = ddsdCurrent.u2.dwRefreshRate;
+ }
+ }
+
+ /* Clean up the refresh rate */
+ if (dwRefreshRateCurrent == pScreenInfo->dwRefreshRate)
+ {
+ /*
+ * Refresh rate is non-specified or equal to current.
+ */
+ pScreenInfo->dwRefreshRate = 0;
+ }
+
+ /* Grab a device context for the screen */
+ hdc = GetDC (NULL);
+ if (hdc == NULL)
+ {
+ ErrorF ("winAllocateFBShadowDDNL - GetDC () failed\n");
+ return FALSE;
+ }
+
+ /* Only change the video mode when different than current mode */
+ if (!pScreenInfo->fMultipleMonitors
+ && (pScreenInfo->dwWidth != GetSystemMetrics (SM_CXSCREEN)
+ || pScreenInfo->dwHeight != GetSystemMetrics (SM_CYSCREEN)
+ || pScreenInfo->dwBPP != GetDeviceCaps (hdc, BITSPIXEL)
+ || pScreenInfo->dwRefreshRate != 0))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Changing video mode\n");
+
+ /* Change the video mode to the mode requested */
+ ddrval = IDirectDraw4_SetDisplayMode (pScreenPriv->pdd4,
+ pScreenInfo->dwWidth,
+ pScreenInfo->dwHeight,
+ pScreenInfo->dwBPP,
+ pScreenInfo->dwRefreshRate,
+ 0);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not set "
+ "full screen display mode: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+ }
+ else
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Not changing video mode\n");
+ }
+
+ /* Release our DC */
+ ReleaseDC (NULL, hdc);
+ hdc = NULL;
+ }
+ else
+ {
+ /* Set the cooperative level for windowed mode */
+ ddrval = IDirectDraw4_SetCooperativeLevel (pScreenPriv->pdd4,
+ pScreenPriv->hwndScreen,
+ DDSCL_NORMAL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not set "
+ "cooperative level: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+ }
+
+ /* Create the primary surface */
+ if (!winCreatePrimarySurfaceShadowDDNL (pScreen))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - winCreatePrimarySurfaceShadowDDNL "
+ "failed\n");
+ return FALSE;
+ }
+
+ /* Get primary surface's pixel format */
+ ZeroMemory (&ddpfPrimary, sizeof (ddpfPrimary));
+ ddpfPrimary.dwSize = sizeof (ddpfPrimary);
+ ddrval = IDirectDrawSurface4_GetPixelFormat (pScreenPriv->pddsPrimary4,
+ &ddpfPrimary);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not get primary "
+ "pixformat: %08x\n",
+ ddrval);
+ return FALSE;
+ }
+
+#if CYGDEBUG
+ ErrorF ("winAllocateFBShadowDDNL - Primary masks: %08x %08x %08x "
+ "dwRGBBitCount: %d\n",
+ ddpfPrimary.u2.dwRBitMask,
+ ddpfPrimary.u3.dwGBitMask,
+ ddpfPrimary.u4.dwBBitMask,
+ ddpfPrimary.u1.dwRGBBitCount);
+#endif
+
+ /* Describe the shadow surface to be created */
+ /*
+ * NOTE: Do not use a DDSCAPS_VIDEOMEMORY surface,
+ * as drawing, locking, and unlocking take forever
+ * with video memory surfaces. In addition,
+ * video memory is a somewhat scarce resource,
+ * so you shouldn't be allocating video memory when
+ * you have the option of using system memory instead.
+ */
+ ZeroMemory (&ddsdShadow, sizeof (ddsdShadow));
+ ddsdShadow.dwSize = sizeof (ddsdShadow);
+ ddsdShadow.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH
+ | DDSD_LPSURFACE | DDSD_PITCH | DDSD_PIXELFORMAT;
+ ddsdShadow.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_SYSTEMMEMORY;
+ ddsdShadow.dwHeight = pScreenInfo->dwHeight;
+ ddsdShadow.dwWidth = pScreenInfo->dwWidth;
+ ddsdShadow.u1.lPitch = pScreenInfo->dwPaddedWidth;
+ ddsdShadow.lpSurface = lpSurface;
+ ddsdShadow.u4.ddpfPixelFormat = ddpfPrimary;
+
+ ErrorF ("winAllocateFBShadowDDNL - lPitch: %d\n",
+ pScreenInfo->dwPaddedWidth);
+
+ /* Create the shadow surface */
+ ddrval = IDirectDraw4_CreateSurface (pScreenPriv->pdd4,
+ &ddsdShadow,
+ &pScreenPriv->pddsShadow4,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winAllocateFBShadowDDNL - Could not create shadow "
+ "surface: %08x\n", ddrval);
+ return FALSE;
+ }
+
+#if CYGDEBUG || YES
+ ErrorF ("winAllocateFBShadowDDNL - Created shadow pitch: %d\n",
+ ddsdShadow.u1.lPitch);
+#endif
+
+ /* Grab the pitch from the surface desc */
+ pScreenInfo->dwStride = (ddsdShadow.u1.lPitch * 8)
+ / pScreenInfo->dwBPP;
+
+#if CYGDEBUG || YES
+ ErrorF ("winAllocateFBShadowDDNL - Created shadow stride: %d\n",
+ pScreenInfo->dwStride);
+#endif
+
+ /* Save the pointer to our surface memory */
+ pScreenInfo->pfb = lpSurface;
+
+ /* Grab the masks from the surface description */
+ pScreenPriv->dwRedMask = ddsdShadow.u4.ddpfPixelFormat.u2.dwRBitMask;
+ pScreenPriv->dwGreenMask = ddsdShadow.u4.ddpfPixelFormat.u3.dwGBitMask;
+ pScreenPriv->dwBlueMask = ddsdShadow.u4.ddpfPixelFormat.u4.dwBBitMask;
+
+#if CYGDEBUG
+ ErrorF ("winAllocateFBShadowDDNL - Returning\n");
+#endif
+
+ return TRUE;
+}
+
+
+/*
+ * Transfer the damaged regions of the shadow framebuffer to the display.
+ */
+
+void
+winShadowUpdateDDNL (ScreenPtr pScreen,
+ shadowBufPtr pBuf)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ RegionPtr damage = &pBuf->damage;
+ HRESULT ddrval = DD_OK;
+ RECT rcDest, rcSrc;
+ POINT ptOrigin;
+ DWORD dwBox = REGION_NUM_RECTS (damage);
+ BoxPtr pBox = REGION_RECTS (damage);
+ HRGN hrgnTemp = NULL, hrgnCombined = NULL;
+
+ /*
+ * Return immediately if the app is not active
+ * and we are fullscreen, or if we have a bad display depth
+ */
+ if ((!pScreenPriv->fActive && pScreenInfo->fFullScreen)
+ || pScreenPriv->fBadDepth) return;
+
+ /* Get the origin of the window in the screen coords */
+ ptOrigin.x = pScreenInfo->dwXOffset;
+ ptOrigin.y = pScreenInfo->dwYOffset;
+ MapWindowPoints (pScreenPriv->hwndScreen,
+ HWND_DESKTOP,
+ (LPPOINT)&ptOrigin, 1);
+
+ /*
+ * Handle small regions with multiple blits,
+ * handle large regions by creating a clipping region and
+ * doing a single blit constrained to that clipping region.
+ */
+ if (pScreenInfo->dwClipUpdatesNBoxes == 0
+ || dwBox < pScreenInfo->dwClipUpdatesNBoxes)
+ {
+ /* Loop through all boxes in the damaged region */
+ while (dwBox--)
+ {
+ /* Assign damage box to source rectangle */
+ rcSrc.left = pBox->x1;
+ rcSrc.top = pBox->y1;
+ rcSrc.right = pBox->x2;
+ rcSrc.bottom = pBox->y2;
+
+ /* Calculate destination rectangle */
+ rcDest.left = ptOrigin.x + rcSrc.left;
+ rcDest.top = ptOrigin.y + rcSrc.top;
+ rcDest.right = ptOrigin.x + rcSrc.right;
+ rcDest.bottom = ptOrigin.y + rcSrc.bottom;
+
+ /* Blit the damaged areas */
+ ddrval = IDirectDrawSurface4_Blt (pScreenPriv->pddsPrimary4,
+ &rcDest,
+ pScreenPriv->pddsShadow4,
+ &rcSrc,
+ DDBLT_WAIT,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winShadowUpdateDDNL - IDirectDrawSurface4_Blt () "
+ "failed: %08x\n",
+ ddrval);
+ }
+
+ /* Get a pointer to the next box */
+ ++pBox;
+ }
+ }
+ else
+ {
+ BoxPtr pBoxExtents = REGION_EXTENTS (pScreen, damage);
+
+ /* Compute a GDI region from the damaged region */
+ hrgnCombined = CreateRectRgn (pBox->x1, pBox->y1, pBox->x2, pBox->y2);
+ dwBox--;
+ pBox++;
+ while (dwBox--)
+ {
+ hrgnTemp = CreateRectRgn (pBox->x1, pBox->y1, pBox->x2, pBox->y2);
+ CombineRgn (hrgnCombined, hrgnCombined, hrgnTemp, RGN_OR);
+ DeleteObject (hrgnTemp);
+ pBox++;
+ }
+
+ /* Install the GDI region as a clipping region */
+ SelectClipRgn (pScreenPriv->hdcScreen, hrgnCombined);
+ DeleteObject (hrgnCombined);
+ hrgnCombined = NULL;
+
+#if CYGDEBUG
+ ErrorF ("winShadowUpdateDDNL - be x1 %d y1 %d x2 %d y2 %d\n",
+ pBoxExtents->x1, pBoxExtents->y1,
+ pBoxExtents->x2, pBoxExtents->y2);
+#endif
+
+ /* Calculating a bounding box for the source is easy */
+ rcSrc.left = pBoxExtents->x1;
+ rcSrc.top = pBoxExtents->y1;
+ rcSrc.right = pBoxExtents->x2;
+ rcSrc.bottom = pBoxExtents->y2;
+
+ /* Calculating a bounding box for the destination is trickier */
+ rcDest.left = ptOrigin.x + rcSrc.left;
+ rcDest.top = ptOrigin.y + rcSrc.top;
+ rcDest.right = ptOrigin.x + rcSrc.right;
+ rcDest.bottom = ptOrigin.y + rcSrc.bottom;
+
+ /* Our Blt should be clipped to the invalidated region */
+ ddrval = IDirectDrawSurface4_Blt (pScreenPriv->pddsPrimary4,
+ &rcDest,
+ pScreenPriv->pddsShadow4,
+ &rcSrc,
+ DDBLT_WAIT,
+ NULL);
+
+ /* Reset the clip region */
+ SelectClipRgn (pScreenPriv->hdcScreen, NULL);
+ }
+}
+
+
+/*
+ * Call the wrapped CloseScreen function.
+ *
+ * Free our resources and private structures.
+ */
+
+Bool
+winCloseScreenShadowDDNL (int nIndex, ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ Bool fReturn;
+
+#if CYGDEBUG
+ ErrorF ("winCloseScreenShadowDDNL - Freeing screen resources\n");
+#endif
+
+ /* Flag that the screen is closed */
+ pScreenPriv->fClosed = TRUE;
+ pScreenPriv->fActive = FALSE;
+
+ /* Call the wrapped CloseScreen procedure */
+ pScreen->CloseScreen = pScreenPriv->CloseScreen;
+ fReturn = (*pScreen->CloseScreen) (nIndex, pScreen);
+
+ /* Free the screen DC */
+ ReleaseDC (pScreenPriv->hwndScreen, pScreenPriv->hdcScreen);
+
+ /* Delete the window property */
+ RemoveProp (pScreenPriv->hwndScreen, WIN_SCR_PROP);
+
+ /* Free the shadow surface, if there is one */
+ if (pScreenPriv->pddsShadow4)
+ {
+ IDirectDrawSurface4_Release (pScreenPriv->pddsShadow4);
+ free (pScreenInfo->pfb);
+ pScreenInfo->pfb = NULL;
+ pScreenPriv->pddsShadow4 = NULL;
+ }
+
+ /* Detach the clipper from the primary surface and release the clipper. */
+ if (pScreenPriv->pddcPrimary)
+ {
+ /* Detach the clipper */
+ IDirectDrawSurface4_SetClipper (pScreenPriv->pddsPrimary4,
+ NULL);
+
+ /* Release the clipper object */
+ IDirectDrawClipper_Release (pScreenPriv->pddcPrimary);
+ pScreenPriv->pddcPrimary = NULL;
+ }
+
+ /* Release the primary surface, if there is one */
+ if (pScreenPriv->pddsPrimary4)
+ {
+ IDirectDrawSurface4_Release (pScreenPriv->pddsPrimary4);
+ pScreenPriv->pddsPrimary4 = NULL;
+ }
+
+ /* Free the DirectDraw4 object, if there is one */
+ if (pScreenPriv->pdd4)
+ {
+ IDirectDraw4_RestoreDisplayMode (pScreenPriv->pdd4);
+ IDirectDraw4_Release (pScreenPriv->pdd4);
+ pScreenPriv->pdd4 = NULL;
+ }
+
+ /* Free the DirectDraw object, if there is one */
+ if (pScreenPriv->pdd)
+ {
+ IDirectDraw_Release (pScreenPriv->pdd);
+ pScreenPriv->pdd = NULL;
+ }
+
+ /* Kill our window */
+ if (pScreenPriv->hwndScreen)
+ {
+ DestroyWindow (pScreenPriv->hwndScreen);
+ pScreenPriv->hwndScreen = NULL;
+ }
+
+ /* Destroy the thread startup mutex */
+ pthread_mutex_destroy (&pScreenPriv->pmServerStarted);
+
+ /* Kill our screeninfo's pointer to the screen */
+ pScreenInfo->pScreen = NULL;
+
+ /* Invalidate the ScreenInfo's fb pointer */
+ pScreenInfo->pfb = NULL;
+
+ /* Free the screen privates for this screen */
+ free ((pointer) pScreenPriv);
+
+ return fReturn;
+}
+
+
+/*
+ * Tell mi what sort of visuals we need.
+ *
+ * Generally we only need one visual, as our screen can only
+ * handle one format at a time, I believe. You may want
+ * to verify that last sentence.
+ */
+
+Bool
+winInitVisualsShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ DWORD dwRedBits, dwGreenBits, dwBlueBits;
+
+ /* Count the number of ones in each color mask */
+ dwRedBits = winCountBits (pScreenPriv->dwRedMask);
+ dwGreenBits = winCountBits (pScreenPriv->dwGreenMask);
+ dwBlueBits = winCountBits (pScreenPriv->dwBlueMask);
+
+ /* Store the maximum number of ones in a color mask as the bitsPerRGB */
+ if (dwRedBits == 0 || dwGreenBits == 0 || dwBlueBits == 0)
+ pScreenPriv->dwBitsPerRGB = 8;
+ else if (dwRedBits > dwGreenBits && dwRedBits > dwBlueBits)
+ pScreenPriv->dwBitsPerRGB = dwRedBits;
+ else if (dwGreenBits > dwRedBits && dwGreenBits > dwBlueBits)
+ pScreenPriv->dwBitsPerRGB = dwGreenBits;
+ else
+ pScreenPriv->dwBitsPerRGB = dwBlueBits;
+
+ ErrorF ("winInitVisualsShadowDDNL - Masks %08x %08x %08x BPRGB %d d %d "
+ "bpp %d\n",
+ pScreenPriv->dwRedMask,
+ pScreenPriv->dwGreenMask,
+ pScreenPriv->dwBlueMask,
+ pScreenPriv->dwBitsPerRGB,
+ pScreenInfo->dwDepth,
+ pScreenInfo->dwBPP);
+
+ /* Create a single visual according to the Windows screen depth */
+ switch (pScreenInfo->dwDepth)
+ {
+ case 24:
+ case 16:
+ case 15:
+#if defined(XFree86Server)
+ /* Setup the real visual */
+ if (!miSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+ TrueColorMask,
+ pScreenPriv->dwBitsPerRGB,
+ -1,
+ pScreenPriv->dwRedMask,
+ pScreenPriv->dwGreenMask,
+ pScreenPriv->dwBlueMask))
+ {
+ ErrorF ("winInitVisualsShadowDDNL - miSetVisualTypesAndMasks "
+ "failed for TrueColor\n");
+ return FALSE;
+ }
+
+#if WIN_EMULATE_PSEUDO_SUPPORT
+ if (!pScreenInfo->fEmulatePseudo)
+ break;
+
+ /* Setup a pseudocolor visual */
+ if (!miSetVisualTypesAndMasks (8,
+ PseudoColorMask,
+ 8,
+ -1,
+ 0,
+ 0,
+ 0))
+ {
+ ErrorF ("winInitVisualsShadowDDNL - miSetVisualTypesAndMasks "
+ "failed for PseudoColor\n");
+ return FALSE;
+ }
+#endif
+#else /* XFree86Server */
+ /* Setup the real visual */
+ if (!fbSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+ TrueColorMask,
+ pScreenPriv->dwBitsPerRGB,
+ pScreenPriv->dwRedMask,
+ pScreenPriv->dwGreenMask,
+ pScreenPriv->dwBlueMask))
+ {
+ ErrorF ("winInitVisualsShadowDDNL - fbSetVisualTypesAndMasks "
+ "failed for TrueColor\n");
+ return FALSE;
+ }
+
+#if WIN_EMULATE_PSEUDO_SUPPORT
+ if (!pScreenInfo->fEmulatePseudo)
+ break;
+
+ /* Setup a pseudocolor visual */
+ if (!fbSetVisualTypesAndMasks (8,
+ PseudoColorMask,
+ 8,
+ 0,
+ 0,
+ 0))
+ {
+ ErrorF ("winInitVisualsShadowDDNL - fbSetVisualTypesAndMasks "
+ "failed for PseudoColor\n");
+ return FALSE;
+ }
+#endif
+#endif /* XFree86Server */
+ break;
+
+ case 8:
+#if defined(XFree86Server)
+ if (!miSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+ pScreenInfo->fFullScreen
+ ? PseudoColorMask : StaticColorMask,
+ pScreenPriv->dwBitsPerRGB,
+ pScreenInfo->fFullScreen
+ ? PseudoColor : StaticColor,
+ pScreenPriv->dwRedMask,
+ pScreenPriv->dwGreenMask,
+ pScreenPriv->dwBlueMask))
+ {
+ ErrorF ("winInitVisualsShadowDDNL - miSetVisualTypesAndMasks "
+ "failed\n");
+ return FALSE;
+ }
+#else /* XFree86Server */
+ if (!fbSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+ pScreenInfo->fFullScreen
+ ? PseudoColorMask : StaticColorMask,
+ pScreenPriv->dwBitsPerRGB,
+ pScreenPriv->dwRedMask,
+ pScreenPriv->dwGreenMask,
+ pScreenPriv->dwBlueMask))
+ {
+ ErrorF ("winInitVisualsShadowDDNL - fbSetVisualTypesAndMasks "
+ "failed\n");
+ return FALSE;
+ }
+#endif /* XFree86Server */
+ break;
+
+ default:
+ ErrorF ("winInitVisualsShadowDDNL - Unknown screen depth\n");
+ return FALSE;
+ }
+
+#if CYGDEBUG
+ ErrorF ("winInitVisualsShadowDDNL - Returning\n");
+#endif
+
+ return TRUE;
+}
+
+
+/*
+ * Adjust the user proposed video mode
+ */
+
+Bool
+winAdjustVideoModeShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ HDC hdc = NULL;
+ DWORD dwBPP;
+
+ /* We're in serious trouble if we can't get a DC */
+ hdc = GetDC (NULL);
+ if (hdc == NULL)
+ {
+ ErrorF ("winAdjustVideoModeShadowDDNL - GetDC () failed\n");
+ return FALSE;
+ }
+
+ /* Query GDI for current display depth */
+ dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
+
+ /* DirectDraw can only change the depth in fullscreen mode */
+ if (pScreenInfo->dwBPP == WIN_DEFAULT_BPP)
+ {
+ /* No -depth parameter passed, let the user know the depth being used */
+ ErrorF ("winAdjustVideoModeShadowDDNL - Using Windows display "
+ "depth of %d bits per pixel\n", dwBPP);
+
+ /* Use GDI's depth */
+ pScreenInfo->dwBPP = dwBPP;
+ }
+ else if (pScreenInfo->fFullScreen
+ && pScreenInfo->dwBPP != dwBPP)
+ {
+ /* FullScreen, and GDI depth differs from -depth parameter */
+ ErrorF ("winAdjustVideoModeShadowDDNL - FullScreen, using command "
+ "line bpp: %d\n", pScreenInfo->dwBPP);
+ }
+ else if (dwBPP != pScreenInfo->dwBPP)
+ {
+ /* Windowed, and GDI depth differs from -depth parameter */
+ ErrorF ("winAdjustVideoModeShadowDDNL - Windowed, command line "
+ "bpp: %d, using bpp: %d\n",
+ pScreenInfo->dwBPP, dwBPP);
+
+ /* We'll use GDI's depth */
+ pScreenInfo->dwBPP = dwBPP;
+ }
+
+ /* See if the shadow bitmap will be larger than the DIB size limit */
+ if (pScreenInfo->dwWidth * pScreenInfo->dwHeight * pScreenInfo->dwBPP
+ >= WIN_DIB_MAXIMUM_SIZE)
+ {
+ ErrorF ("winAdjustVideoModeShadowDDNL - Requested DirectDraw surface "
+ "will be larger than %d MB. The surface may fail to be "
+ "allocated on Windows 95, 98, or Me, due to a %d MB limit in "
+ "DIB size. This limit does not apply to Windows NT/2000, and "
+ "this message may be ignored on those platforms.\n",
+ WIN_DIB_MAXIMUM_SIZE_MB, WIN_DIB_MAXIMUM_SIZE_MB);
+ }
+
+ /* Release our DC */
+ ReleaseDC (NULL, hdc);
+
+ return TRUE;
+}
+
+
+/*
+ * Blt exposed regions to the screen
+ */
+
+Bool
+winBltExposedRegionsShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ RECT rcSrc, rcDest;
+ POINT ptOrigin;
+ HDC hdcUpdate;
+ PAINTSTRUCT ps;
+ HRESULT ddrval = DD_OK;
+ Bool fReturn = TRUE;
+ int i;
+
+ /* BeginPaint gives us an hdc that clips to the invalidated region */
+ hdcUpdate = BeginPaint (pScreenPriv->hwndScreen, &ps);
+ if (hdcUpdate == NULL)
+ {
+ fReturn = FALSE;
+ ErrorF ("winBltExposedRegionsShadowDDNL - BeginPaint () returned "
+ "a NULL device context handle. Aborting blit attempt.\n");
+ goto winBltExposedRegionsShadowDDNL_Exit;
+ }
+
+ /* Get the origin of the window in the screen coords */
+ ptOrigin.x = pScreenInfo->dwXOffset;
+ ptOrigin.y = pScreenInfo->dwYOffset;
+
+ MapWindowPoints (pScreenPriv->hwndScreen,
+ HWND_DESKTOP,
+ (LPPOINT)&ptOrigin, 1);
+ rcDest.left = ptOrigin.x;
+ rcDest.right = ptOrigin.x + pScreenInfo->dwWidth;
+ rcDest.top = ptOrigin.y;
+ rcDest.bottom = ptOrigin.y + pScreenInfo->dwHeight;
+
+ /* Source can be entire shadow surface, as Blt should clip for us */
+ rcSrc.left = 0;
+ rcSrc.top = 0;
+ rcSrc.right = pScreenInfo->dwWidth;
+ rcSrc.bottom = pScreenInfo->dwHeight;
+
+ /* Try to regain the primary surface and blit again if we've lost it */
+ for (i = 0; i <= WIN_REGAIN_SURFACE_RETRIES; ++i)
+ {
+ /* Our Blt should be clipped to the invalidated region */
+ ddrval = IDirectDrawSurface4_Blt (pScreenPriv->pddsPrimary4,
+ &rcDest,
+ pScreenPriv->pddsShadow4,
+ &rcSrc,
+ DDBLT_WAIT,
+ NULL);
+ if (ddrval == DDERR_SURFACELOST)
+ {
+ /* Surface was lost */
+ ErrorF ("winBltExposedRegionsShadowDDNL - IDirectDrawSurface4_Blt "
+ "reported that the primary surface was lost, "
+ "trying to restore, retry: %d\n", i + 1);
+
+ /* Try to restore the surface, once */
+
+ ddrval = IDirectDrawSurface4_Restore (pScreenPriv->pddsPrimary4);
+ ErrorF ("winBltExposedRegionsShadowDDNL - "
+ "IDirectDrawSurface4_Restore returned: ");
+ if (ddrval == DD_OK)
+ continue;
+ else if (ddrval == DDERR_WRONGMODE)
+ ErrorF ("DDERR_WRONGMODE\n");
+ else if (ddrval == DDERR_INCOMPATIBLEPRIMARY)
+ ErrorF ("DDERR_INCOMPATIBLEPRIMARY\n");
+ else if (ddrval == DDERR_UNSUPPORTED)
+ ErrorF ("DDERR_UNSUPPORTED\n");
+ else if (ddrval == DDERR_INVALIDPARAMS)
+ ErrorF ("DDERR_INVALIDPARAMS\n");
+ else if (ddrval == DDERR_INVALIDOBJECT)
+ ErrorF ("DDERR_INVALIDOBJECT\n");
+ else
+ ErrorF ("unknown error: %08x\n", ddrval);
+
+ /* Loop around to try the blit one more time */
+ continue;
+ }
+ else if (FAILED (ddrval))
+ {
+ fReturn = FALSE;
+ ErrorF ("winBltExposedRegionsShadowDDNL - IDirectDrawSurface4_Blt "
+ "failed, but surface not lost: %08x %d\n", ddrval, ddrval);
+ goto winBltExposedRegionsShadowDDNL_Exit;
+ }
+ else
+ {
+ /* Success, stop looping */
+ break;
+ }
+ }
+
+ winBltExposedRegionsShadowDDNL_Exit:
+ /* EndPaint frees the DC */
+ if (hdcUpdate != NULL)
+ EndPaint (pScreenPriv->hwndScreen, &ps);
+ return fReturn;
+}
+
+
+/*
+ * Do any engine-specific appliation-activation processing
+ */
+
+Bool
+winActivateAppShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+
+ /*
+ * Do we have a surface?
+ * Are we active?
+ * Are we full screen?
+ */
+ if (pScreenPriv != NULL
+ && pScreenPriv->pddsPrimary4 != NULL
+ && pScreenPriv->fActive)
+ {
+ /* Primary surface was lost, restore it */
+ IDirectDrawSurface4_Restore (pScreenPriv->pddsPrimary4);
+ }
+
+ return TRUE;
+}
+
+
+/*
+ * Reblit the shadow framebuffer to the screen.
+ */
+
+Bool
+winRedrawScreenShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+ HRESULT ddrval = DD_OK;
+ RECT rcSrc, rcDest;
+ POINT ptOrigin;
+
+ /* Get the origin of the window in the screen coords */
+ ptOrigin.x = pScreenInfo->dwXOffset;
+ ptOrigin.y = pScreenInfo->dwYOffset;
+ MapWindowPoints (pScreenPriv->hwndScreen,
+ HWND_DESKTOP,
+ (LPPOINT)&ptOrigin, 1);
+ rcDest.left = ptOrigin.x;
+ rcDest.right = ptOrigin.x + pScreenInfo->dwWidth;
+ rcDest.top = ptOrigin.y;
+ rcDest.bottom = ptOrigin.y + pScreenInfo->dwHeight;
+
+ /* Source can be entire shadow surface, as Blt should clip for us */
+ rcSrc.left = 0;
+ rcSrc.top = 0;
+ rcSrc.right = pScreenInfo->dwWidth;
+ rcSrc.bottom = pScreenInfo->dwHeight;
+
+ /* Redraw the whole window, to take account for the new colors */
+ ddrval = IDirectDrawSurface4_Blt (pScreenPriv->pddsPrimary4,
+ &rcDest,
+ pScreenPriv->pddsShadow4,
+ &rcSrc,
+ DDBLT_WAIT,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winRedrawScreenShadowDDNL - IDirectDrawSurface4_Blt () "
+ "failed: %08x\n",
+ ddrval);
+ }
+
+ return TRUE;
+}
+
+
+/*
+ * Realize the currently installed colormap
+ */
+
+Bool
+winRealizeInstalledPaletteShadowDDNL (ScreenPtr pScreen)
+{
+ return TRUE;
+}
+
+
+/*
+ * Install the specified colormap
+ */
+
+Bool
+winInstallColormapShadowDDNL (ColormapPtr pColormap)
+{
+ ScreenPtr pScreen = pColormap->pScreen;
+ winScreenPriv(pScreen);
+ winCmapPriv(pColormap);
+ HRESULT ddrval = DD_OK;
+
+ /* Install the DirectDraw palette on the primary surface */
+ ddrval = IDirectDrawSurface4_SetPalette (pScreenPriv->pddsPrimary4,
+ pCmapPriv->lpDDPalette);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winInstallColormapShadowDDNL - Failed installing the "
+ "DirectDraw palette.\n");
+ return FALSE;
+ }
+
+ /* Save a pointer to the newly installed colormap */
+ pScreenPriv->pcmapInstalled = pColormap;
+
+ return TRUE;
+}
+
+
+/*
+ * Store the specified colors in the specified colormap
+ */
+
+Bool
+winStoreColorsShadowDDNL (ColormapPtr pColormap,
+ int ndef,
+ xColorItem *pdefs)
+{
+ ScreenPtr pScreen = pColormap->pScreen;
+ winScreenPriv(pScreen);
+ winCmapPriv(pColormap);
+ ColormapPtr curpmap = pScreenPriv->pcmapInstalled;
+ HRESULT ddrval = DD_OK;
+
+ /* Put the X colormap entries into the Windows logical palette */
+ ddrval = IDirectDrawPalette_SetEntries (pCmapPriv->lpDDPalette,
+ 0,
+ pdefs[0].pixel,
+ ndef,
+ pCmapPriv->peColors
+ + pdefs[0].pixel);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winStoreColorsShadowDDNL - SetEntries () failed\n");
+ return FALSE;
+ }
+
+ /* Don't install the DirectDraw palette if the colormap is not installed */
+ if (pColormap != curpmap)
+ {
+ return TRUE;
+ }
+
+ if (!winInstallColormapShadowDDNL (pColormap))
+ {
+ ErrorF ("winStoreColorsShadowDDNL - Failed installing colormap\n");
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/*
+ * Colormap initialization procedure
+ */
+
+Bool
+winCreateColormapShadowDDNL (ColormapPtr pColormap)
+{
+ HRESULT ddrval = DD_OK;
+ ScreenPtr pScreen = pColormap->pScreen;
+ winScreenPriv(pScreen);
+ winCmapPriv(pColormap);
+
+ /* Create a DirectDraw palette */
+ ddrval = IDirectDraw4_CreatePalette (pScreenPriv->pdd4,
+ DDPCAPS_8BIT | DDPCAPS_ALLOW256,
+ pCmapPriv->peColors,
+ &pCmapPriv->lpDDPalette,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winCreateColormapShadowDDNL - CreatePalette failed\n");
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/*
+ * Colormap destruction procedure
+ */
+
+Bool
+winDestroyColormapShadowDDNL (ColormapPtr pColormap)
+{
+ winScreenPriv(pColormap->pScreen);
+ winCmapPriv(pColormap);
+ HRESULT ddrval = DD_OK;
+
+ /*
+ * Is colormap to be destroyed the default?
+ *
+ * Non-default colormaps should have had winUninstallColormap
+ * called on them before we get here. The default colormap
+ * will not have had winUninstallColormap called on it. Thus,
+ * we need to handle the default colormap in a special way.
+ */
+ if (pColormap->flags & IsDefault)
+ {
+#if CYGDEBUG
+ ErrorF ("winDestroyColormapShadowDDNL - Destroying default "
+ "colormap\n");
+#endif
+
+ /*
+ * FIXME: Walk the list of all screens, popping the default
+ * palette out of each screen device context.
+ */
+
+ /* Pop the palette out of the primary surface */
+ ddrval = IDirectDrawSurface4_SetPalette (pScreenPriv->pddsPrimary4,
+ NULL);
+ if (FAILED (ddrval))
+ {
+ ErrorF ("winDestroyColormapShadowDDNL - Failed freeing the "
+ "default colormap DirectDraw palette.\n");
+ return FALSE;
+ }
+
+ /* Clear our private installed colormap pointer */
+ pScreenPriv->pcmapInstalled = NULL;
+ }
+
+ /* Release the palette */
+ IDirectDrawPalette_Release (pCmapPriv->lpDDPalette);
+
+ /* Invalidate the colormap privates */
+ pCmapPriv->lpDDPalette = NULL;
+
+ return TRUE;
+}
+
+
+/*
+ * Set pointers to our engine specific functions
+ */
+
+Bool
+winSetEngineFunctionsShadowDDNL (ScreenPtr pScreen)
+{
+ winScreenPriv(pScreen);
+ winScreenInfo *pScreenInfo = pScreenPriv->pScreenInfo;
+
+ /* Set our pointers */
+ pScreenPriv->pwinAllocateFB = winAllocateFBShadowDDNL;
+ pScreenPriv->pwinShadowUpdate = winShadowUpdateDDNL;
+ pScreenPriv->pwinCloseScreen = winCloseScreenShadowDDNL;
+ pScreenPriv->pwinInitVisuals = winInitVisualsShadowDDNL;
+ pScreenPriv->pwinAdjustVideoMode = winAdjustVideoModeShadowDDNL;
+ if (pScreenInfo->fFullScreen)
+ pScreenPriv->pwinCreateBoundingWindow = winCreateBoundingWindowFullScreen;
+ else
+ pScreenPriv->pwinCreateBoundingWindow = winCreateBoundingWindowWindowed;
+ pScreenPriv->pwinFinishScreenInit = winFinishScreenInitFB;
+ pScreenPriv->pwinBltExposedRegions = winBltExposedRegionsShadowDDNL;
+ pScreenPriv->pwinActivateApp = winActivateAppShadowDDNL;
+ pScreenPriv->pwinRedrawScreen = winRedrawScreenShadowDDNL;
+ pScreenPriv->pwinRealizeInstalledPalette
+ = winRealizeInstalledPaletteShadowDDNL;
+ pScreenPriv->pwinInstallColormap = winInstallColormapShadowDDNL;
+ pScreenPriv->pwinStoreColors = winStoreColorsShadowDDNL;
+ pScreenPriv->pwinCreateColormap = winCreateColormapShadowDDNL;
+ pScreenPriv->pwinDestroyColormap = winDestroyColormapShadowDDNL;
+ pScreenPriv->pwinHotKeyAltTab = (winHotKeyAltTabProcPtr) (void (*)())NoopDDA;
+ pScreenPriv->pwinCreatePrimarySurface = winCreatePrimarySurfaceShadowDDNL;
+ pScreenPriv->pwinReleasePrimarySurface = winReleasePrimarySurfaceShadowDDNL;
+
+ return TRUE;
+}
+
+