Add Distributed Multihead X (DMX) support

1 files changed, 562 insertions, 0 deletions

diff --git a/hw/dmx/dmxscrinit.c b/hw/dmx/dmxscrinit.c
new file mode 100644
index 000000000..c3949dc18
--- /dev/null
+++ b/hw/dmx/dmxscrinit.c
@@ -0,0 +1,562 @@
+/* $XFree86$ */
+/*
+ * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/*
+ * Authors:
+ *   Kevin E. Martin <kem@redhat.com>
+ *   David H. Dawes <dawes@xfree86.org>
+ *
+ */
+
+/** \file
+ * This file provides support for screen initialization. */
+
+#include "dmx.h"
+#include "dmxsync.h"
+#include "dmxshadow.h"
+#include "dmxscrinit.h"
+#include "dmxcursor.h"
+#include "dmxgc.h"
+#include "dmxgcops.h"
+#include "dmxwindow.h"
+#include "dmxpixmap.h"
+#include "dmxfont.h"
+#include "dmxcmap.h"
+#include "dmxprop.h"
+#include "dmxdpms.h"
+
+#ifdef RENDER
+#include "dmxpict.h"
+#endif
+
+#include "fb.h"
+#include "mipointer.h"
+#include "micmap.h"
+
+extern Bool dmxCloseScreen(int idx, ScreenPtr pScreen);
+static Bool dmxSaveScreen(ScreenPtr pScreen, int what);
+
+static unsigned long dmxGeneration;
+static unsigned long *dmxCursorGeneration;
+
+int dmxGCPrivateIndex;          /**< Private index for GCs       */
+int dmxWinPrivateIndex;         /**< Private index for Windows   */
+#ifdef PIXPRIV
+int dmxPixPrivateIndex;         /**< Private index for Pixmaps   */
+#endif
+int dmxFontPrivateIndex;        /**< Private index for Fonts     */
+int dmxScreenPrivateIndex;      /**< Private index for Screens   */
+int dmxColormapPrivateIndex;    /**< Private index for Colormaps */
+#ifdef RENDER
+int dmxPictPrivateIndex;        /**< Private index for Picts     */
+int dmxGlyphSetPrivateIndex;    /**< Private index for GlyphSets */
+#endif
+
+/** Initialize the parts of screen \a idx that require access to the
+ *  back-end server. */
+void dmxBEScreenInit(int idx, ScreenPtr pScreen)
+{
+    DMXScreenInfo        *dmxScreen = &dmxScreens[idx];
+    XSetWindowAttributes  attribs;
+    XGCValues             gcvals;
+    unsigned long         mask;
+    int                   i, j;
+
+    /* FIXME: The dmxScreenInit() code currently assumes that it will
+     * not be called if the Xdmx server is started with this screen
+     * detached -- i.e., it assumes that dmxScreen->beDisplay is always
+     * valid.  This is not necessarily a valid assumption when full
+     * addition/removal of screens is implemented, but when this code is
+     * broken out for screen reattachment, then we will reevaluate this
+     * assumption.
+     */
+
+    pScreen->mmWidth = DisplayWidthMM(dmxScreen->beDisplay, 
+				      DefaultScreen(dmxScreen->beDisplay));
+    pScreen->mmHeight = DisplayHeightMM(dmxScreen->beDisplay, 
+					DefaultScreen(dmxScreen->beDisplay));
+
+    pScreen->whitePixel = dmxScreen->beWhitePixel;
+    pScreen->blackPixel = dmxScreen->beBlackPixel;
+
+    /* Handle screen savers and DPMS on the backend */
+    dmxDPMSInit(dmxScreen);
+
+    /* Create root window for screen */
+    mask = CWBackPixel | CWEventMask | CWColormap | CWOverrideRedirect;
+    attribs.background_pixel = dmxScreen->beBlackPixel;
+    attribs.event_mask = (KeyPressMask
+                          | KeyReleaseMask
+                          | ButtonPressMask
+                          | ButtonReleaseMask
+                          | EnterWindowMask
+                          | LeaveWindowMask
+                          | PointerMotionMask
+                          | KeymapStateMask
+                          | FocusChangeMask);
+    attribs.colormap = dmxScreen->beDefColormaps[dmxScreen->beDefVisualIndex];
+    attribs.override_redirect = True;
+    
+    dmxScreen->scrnWin =
+	XCreateWindow(dmxScreen->beDisplay, 
+		      DefaultRootWindow(dmxScreen->beDisplay),
+		      dmxScreen->scrnX,
+		      dmxScreen->scrnY,
+		      dmxScreen->scrnWidth,
+		      dmxScreen->scrnHeight,
+		      0,
+		      pScreen->rootDepth,
+		      InputOutput,
+		      dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
+		      mask,
+		      &attribs);
+    dmxPropertyWindow(dmxScreen);
+
+    /*
+     * This turns off the cursor by defining a cursor with no visible
+     * components.
+     */
+    {
+	char noCursorData[] = {0, 0, 0, 0,
+			       0, 0, 0, 0};
+	Pixmap pixmap;
+	XColor color, tmp;
+
+	pixmap = XCreateBitmapFromData(dmxScreen->beDisplay, dmxScreen->scrnWin,
+				       noCursorData, 8, 8);
+	XAllocNamedColor(dmxScreen->beDisplay, dmxScreen->beDefColormaps[0],
+			 "black", &color, &tmp);
+	dmxScreen->noCursor = XCreatePixmapCursor(dmxScreen->beDisplay,
+						  pixmap, pixmap,
+						  &color, &color, 0, 0);
+	XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin,
+		      dmxScreen->noCursor);
+
+	XFreePixmap(dmxScreen->beDisplay, pixmap);
+    }
+
+    XMapWindow(dmxScreen->beDisplay, dmxScreen->scrnWin);
+
+    if (dmxShadowFB) {
+	mask = (GCFunction
+		| GCPlaneMask
+		| GCClipMask);
+	gcvals.function = GXcopy;
+	gcvals.plane_mask = AllPlanes;
+	gcvals.clip_mask = None;
+
+	dmxScreen->shadowGC = XCreateGC(dmxScreen->beDisplay,
+					dmxScreen->scrnWin,
+					mask, &gcvals);
+
+	dmxScreen->shadowFBImage =
+	    XCreateImage(dmxScreen->beDisplay,
+			 dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
+			 dmxScreen->beDepth,
+			 ZPixmap,
+			 0,
+			 (char *)dmxScreen->shadow,
+			 dmxScreen->scrnWidth, dmxScreen->scrnHeight,
+			 dmxScreen->beBPP,
+			 PixmapBytePad(dmxScreen->scrnWidth,
+				       dmxScreen->beBPP));
+    } else {
+	/* Create default drawables (used during GC creation) */
+	for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) 
+	    for (j = 0; j < dmxScreen->beNumDepths; j++)
+		if ((dmxScreen->bePixmapFormats[i].depth == 1) ||
+		    (dmxScreen->bePixmapFormats[i].depth ==
+		     dmxScreen->beDepths[j])) {
+		    dmxScreen->scrnDefDrawables[i] = (Drawable)
+			XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin,
+				      1, 1, dmxScreen->bePixmapFormats[i].depth);
+		    break;
+		}
+    }
+}
+
+/** Initialize screen number \a idx. */
+Bool dmxScreenInit(int idx, ScreenPtr pScreen, int argc, char *argv[])
+{
+    DMXScreenInfo        *dmxScreen = &dmxScreens[idx];
+    int                   i, j;
+
+    if (dmxGeneration != serverGeneration) {
+#ifdef RENDER
+	/* Allocate picture private index */
+	dmxPictPrivateIndex = AllocatePicturePrivateIndex();
+	if (dmxPictPrivateIndex == -1)
+	    return FALSE;
+
+	/* Allocate glyph set private index */
+	dmxGlyphSetPrivateIndex = AllocateGlyphSetPrivateIndex();
+	if (dmxGlyphSetPrivateIndex == -1)
+	    return FALSE;
+#endif
+
+	/* Allocate GC private index */
+	dmxGCPrivateIndex = AllocateGCPrivateIndex();
+	if (dmxGCPrivateIndex == -1)
+	    return FALSE;
+
+	/* Allocate window private index */
+	dmxWinPrivateIndex = AllocateWindowPrivateIndex();
+	if (dmxWinPrivateIndex == -1)
+	    return FALSE;
+
+#ifdef PIXPRIV
+	/* Allocate pixmap private index */
+	dmxPixPrivateIndex = AllocatePixmapPrivateIndex();
+	if (dmxPixPrivateIndex == -1)
+	    return FALSE;
+#else
+#error Must define PIXPRIV to compile DMX X server
+#endif
+
+	/* Allocate font private index */
+	dmxFontPrivateIndex = AllocateFontPrivateIndex();
+	if (dmxFontPrivateIndex == -1)
+	    return FALSE;
+
+        /* Allocate screen private index */
+        dmxScreenPrivateIndex = AllocateScreenPrivateIndex();
+        if (dmxScreenPrivateIndex == -1)
+            return FALSE;
+
+	dmxGeneration = serverGeneration;
+    }
+
+    if (dmxShadowFB) {
+	dmxScreen->shadow = shadowAlloc(dmxScreen->scrnWidth,
+					dmxScreen->scrnHeight,
+					dmxScreen->beBPP);
+    } else {
+	if (!dmxInitGC(pScreen)) return FALSE;
+	if (!dmxInitWindow(pScreen)) return FALSE;
+	if (!dmxInitPixmap(pScreen)) return FALSE;
+    }
+
+    /*
+     * Initalise the visual types.  miSetVisualTypesAndMasks() requires
+     * that all of the types for each depth be collected together.  It's
+     * intended for slightly different usage to what we would like here.
+     * Maybe a miAddVisualTypeAndMask() function will be added to make
+     * things easier here.
+     */
+    for (i = 0; i < dmxScreen->beNumDepths; i++) {
+	int    depth;
+	int    visuals        = 0;
+	int    bitsPerRgb     = 0;
+	int    preferredClass = -1;
+	Pixel  redMask        = 0;
+	Pixel  greenMask      = 0;
+	Pixel  blueMask       = 0;
+
+	depth = dmxScreen->beDepths[i];
+	for (j = 0; j < dmxScreen->beNumVisuals; j++) {
+	    XVisualInfo *vi;
+
+	    vi = &dmxScreen->beVisuals[j];
+	    if (vi->depth == depth) {
+		/* Assume the masks are all the same. */
+		visuals |= (1 << vi->class);
+		bitsPerRgb = vi->bits_per_rgb;
+		redMask = vi->red_mask;
+		greenMask = vi->green_mask;
+		blueMask = vi->blue_mask;
+		if (j == dmxScreen->beDefVisualIndex) {
+		    preferredClass = vi->class;
+		}
+	    }
+	}
+	miSetVisualTypesAndMasks(depth, visuals, bitsPerRgb, preferredClass,
+				 redMask, greenMask, blueMask);
+    }
+
+    fbScreenInit(pScreen,
+		 dmxShadowFB ? dmxScreen->shadow : NULL,
+		 dmxScreen->scrnWidth,
+		 dmxScreen->scrnHeight,
+		 dmxScreen->beXDPI,
+		 dmxScreen->beXDPI,
+		 dmxScreen->scrnWidth,
+		 dmxScreen->beBPP);
+#ifdef RENDER
+    (void)dmxPictureInit(pScreen, 0, 0);
+#endif
+
+    if (dmxShadowFB && !shadowInit(pScreen, dmxShadowUpdateProc, NULL))
+	return FALSE;
+
+    miInitializeBackingStore(pScreen);
+
+    if (dmxShadowFB) {
+	miDCInitialize(pScreen, &dmxPointerCursorFuncs);
+    } else {
+        MAXSCREENSALLOC(dmxCursorGeneration);
+	if (dmxCursorGeneration[idx] != serverGeneration) {
+	    if (!(miPointerInitialize(pScreen,
+				      &dmxPointerSpriteFuncs,
+				      &dmxPointerCursorFuncs,
+				      FALSE)))
+		return FALSE;
+
+	    dmxCursorGeneration[idx] = serverGeneration;
+	}
+    }
+
+    DMX_WRAP(CloseScreen, dmxCloseScreen, dmxScreen, pScreen);
+    DMX_WRAP(SaveScreen, dmxSaveScreen, dmxScreen, pScreen);
+
+    dmxBEScreenInit(idx, pScreen);
+
+    if (!dmxShadowFB) {
+	/* Wrap GC functions */
+	DMX_WRAP(CreateGC, dmxCreateGC, dmxScreen, pScreen);
+
+	/* Wrap Window functions */
+	DMX_WRAP(CreateWindow, dmxCreateWindow, dmxScreen, pScreen);
+	DMX_WRAP(DestroyWindow, dmxDestroyWindow, dmxScreen, pScreen);
+	DMX_WRAP(PositionWindow, dmxPositionWindow, dmxScreen, pScreen);
+	DMX_WRAP(ChangeWindowAttributes, dmxChangeWindowAttributes, dmxScreen,
+		 pScreen);
+	DMX_WRAP(RealizeWindow, dmxRealizeWindow, dmxScreen, pScreen);
+	DMX_WRAP(UnrealizeWindow, dmxUnrealizeWindow, dmxScreen, pScreen);
+	DMX_WRAP(RestackWindow, dmxRestackWindow, dmxScreen, pScreen);
+	DMX_WRAP(WindowExposures, dmxWindowExposures, dmxScreen, pScreen);
+	DMX_WRAP(PaintWindowBackground, dmxPaintWindowBackground, dmxScreen,
+		 pScreen);
+	DMX_WRAP(PaintWindowBorder, dmxPaintWindowBorder, dmxScreen, pScreen);
+	DMX_WRAP(CopyWindow, dmxCopyWindow, dmxScreen, pScreen);
+
+	DMX_WRAP(ResizeWindow, dmxResizeWindow, dmxScreen, pScreen);
+	DMX_WRAP(ReparentWindow, dmxReparentWindow, dmxScreen, pScreen);
+
+	DMX_WRAP(ChangeBorderWidth, dmxChangeBorderWidth, dmxScreen, pScreen);
+
+	/* Wrap Image functions */
+	DMX_WRAP(GetImage, dmxGetImage, dmxScreen, pScreen);
+	DMX_WRAP(GetSpans, dmxGetSpans, dmxScreen, pScreen);
+
+	/* Wrap Pixmap functions */
+	DMX_WRAP(CreatePixmap, dmxCreatePixmap, dmxScreen, pScreen);
+	DMX_WRAP(DestroyPixmap, dmxDestroyPixmap, dmxScreen, pScreen);
+	DMX_WRAP(BitmapToRegion, dmxBitmapToRegion, dmxScreen, pScreen);
+
+	/* Wrap Font functions */
+	DMX_WRAP(RealizeFont, dmxRealizeFont, dmxScreen, pScreen);
+	DMX_WRAP(UnrealizeFont, dmxUnrealizeFont, dmxScreen, pScreen);
+
+	/* Wrap Colormap functions */
+	DMX_WRAP(CreateColormap, dmxCreateColormap, dmxScreen, pScreen);
+	DMX_WRAP(DestroyColormap, dmxDestroyColormap, dmxScreen, pScreen);
+	DMX_WRAP(InstallColormap, dmxInstallColormap, dmxScreen, pScreen);
+	DMX_WRAP(StoreColors, dmxStoreColors, dmxScreen, pScreen);
+
+#ifdef SHAPE
+	/* Wrap Shape functions */
+	DMX_WRAP(SetShape, dmxSetShape, dmxScreen, pScreen);
+#endif
+    }
+
+    if (!dmxCreateDefColormap(pScreen))
+	return FALSE;
+
+    return TRUE;
+}
+
+/** Close the \a pScreen resources on the back-end server. */
+void dmxBECloseScreen(ScreenPtr pScreen)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    int            i;
+
+    /* Restore the back-end screen-saver and DPMS state. */
+    dmxDPMSTerm(dmxScreen);
+
+    /* Free the screen resources */
+
+    XFreeCursor(dmxScreen->beDisplay, dmxScreen->noCursor);
+    dmxScreen->noCursor = (Cursor)0;
+
+    XUnmapWindow(dmxScreen->beDisplay, dmxScreen->scrnWin);
+    XDestroyWindow(dmxScreen->beDisplay, dmxScreen->scrnWin);
+    dmxScreen->scrnWin = (Window)0;
+
+    if (dmxShadowFB) {
+	/* Free the shadow GC and image assocated with the back-end server */
+	XFreeGC(dmxScreen->beDisplay, dmxScreen->shadowGC);
+	dmxScreen->shadowGC = NULL;
+	XFree(dmxScreen->shadowFBImage);
+	dmxScreen->shadowFBImage = NULL;
+    } else {
+	/* Free the default drawables */
+	for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) {
+	    XFreePixmap(dmxScreen->beDisplay, dmxScreen->scrnDefDrawables[i]);
+	    dmxScreen->scrnDefDrawables[i] = (Drawable)0;
+	}
+    }
+
+    /* Free resources allocated during initialization (in dmxinit.c) */
+    for (i = 0; i < dmxScreen->beNumDefColormaps; i++)
+	XFreeColormap(dmxScreen->beDisplay, dmxScreen->beDefColormaps[i]);
+    xfree(dmxScreen->beDefColormaps);
+    dmxScreen->beDefColormaps = NULL;
+
+#if 0
+    /* Do not free visuals, depths and pixmap formats here.  Free them
+     * in dmxCloseScreen() instead -- see comment below. */
+    XFree(dmxScreen->beVisuals);
+    dmxScreen->beVisuals = NULL;
+
+    XFree(dmxScreen->beDepths);
+    dmxScreen->beDepths = NULL;
+
+    XFree(dmxScreen->bePixmapFormats);
+    dmxScreen->bePixmapFormats = NULL;
+#endif
+
+#ifdef GLXEXT
+    if (dmxScreen->glxVisuals) {
+	XFree(dmxScreen->glxVisuals);
+	dmxScreen->glxVisuals = NULL;
+	dmxScreen->numGlxVisuals = 0;
+    }
+#endif
+
+    /* Close display */
+    XCloseDisplay(dmxScreen->beDisplay);
+    dmxScreen->beDisplay = NULL;
+}
+
+/** Close screen number \a idx. */
+Bool dmxCloseScreen(int idx, ScreenPtr pScreen)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
+
+    /* Reset the proc vectors */
+    if (idx == 0) {
+#ifdef RENDER
+	dmxResetRender();
+#endif
+	dmxResetFonts();
+    }
+
+    if (dmxShadowFB) {
+	/* Free the shadow framebuffer */
+	xfree(dmxScreen->shadow);
+    } else {
+
+#ifdef SHAPE
+	/* Unwrap Shape functions */
+	DMX_UNWRAP(SetShape, dmxScreen, pScreen);
+#endif
+
+	/* Unwrap the pScreen functions */
+	DMX_UNWRAP(CreateGC, dmxScreen, pScreen);
+
+	DMX_UNWRAP(CreateWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(DestroyWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(PositionWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(ChangeWindowAttributes, dmxScreen, pScreen);
+	DMX_UNWRAP(RealizeWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(UnrealizeWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(RestackWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(WindowExposures, dmxScreen, pScreen);
+	DMX_UNWRAP(PaintWindowBackground, dmxScreen, pScreen);
+	DMX_UNWRAP(PaintWindowBorder, dmxScreen, pScreen);
+	DMX_UNWRAP(CopyWindow, dmxScreen, pScreen);
+
+	DMX_UNWRAP(ResizeWindow, dmxScreen, pScreen);
+	DMX_UNWRAP(ReparentWindow, dmxScreen, pScreen);
+
+	DMX_UNWRAP(ChangeBorderWidth, dmxScreen, pScreen);
+
+	DMX_UNWRAP(GetImage, dmxScreen, pScreen);
+	DMX_UNWRAP(GetSpans, dmxScreen, pScreen);
+
+	DMX_UNWRAP(CreatePixmap, dmxScreen, pScreen);
+	DMX_UNWRAP(DestroyPixmap, dmxScreen, pScreen);
+	DMX_UNWRAP(BitmapToRegion, dmxScreen, pScreen);
+
+	DMX_UNWRAP(RealizeFont, dmxScreen, pScreen);
+	DMX_UNWRAP(UnrealizeFont, dmxScreen, pScreen);
+
+	DMX_UNWRAP(CreateColormap, dmxScreen, pScreen);
+	DMX_UNWRAP(DestroyColormap, dmxScreen, pScreen);
+	DMX_UNWRAP(InstallColormap, dmxScreen, pScreen);
+	DMX_UNWRAP(StoreColors, dmxScreen, pScreen);
+    }
+
+    DMX_UNWRAP(SaveScreen, dmxScreen, pScreen);
+
+    if (dmxScreen->beDisplay) {
+	dmxBECloseScreen(pScreen);
+
+#if 1
+	/* Free visuals, depths and pixmap formats here so that they
+	 * won't be freed when a screen is detached, thereby allowing
+	 * the screen to be reattached to be compared to the one
+	 * previously removed.
+	 */
+	XFree(dmxScreen->beVisuals);
+	dmxScreen->beVisuals = NULL;
+
+	XFree(dmxScreen->beDepths);
+	dmxScreen->beDepths = NULL;
+
+	XFree(dmxScreen->bePixmapFormats);
+	dmxScreen->bePixmapFormats = NULL;
+#endif
+    }
+
+    DMX_UNWRAP(CloseScreen, dmxScreen, pScreen);
+    return pScreen->CloseScreen(idx, pScreen);
+}
+
+static Bool dmxSaveScreen(ScreenPtr pScreen, int what)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+
+    if (dmxScreen->beDisplay) {
+	switch (what) {
+	case SCREEN_SAVER_OFF:
+	case SCREEN_SAVER_FORCER:
+	    XResetScreenSaver(dmxScreen->beDisplay);
+	    dmxSync(dmxScreen, FALSE);
+	    break;
+	case SCREEN_SAVER_ON:
+	case SCREEN_SAVER_CYCLE:
+	    XActivateScreenSaver(dmxScreen->beDisplay);
+	    dmxSync(dmxScreen, FALSE);
+	    break;
+	}
+    }
+
+    return TRUE;
+}