Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 510 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/mfb/mfbbitblt.c b/nx-X11/programs/Xserver/mfb/mfbbitblt.c
new file mode 100644
index 000000000..70e2a9934
--- /dev/null
+++ b/nx-X11/programs/Xserver/mfb/mfbbitblt.c
@@ -0,0 +1,510 @@
+/* $XFree86: xc/programs/Xserver/mfb/mfbbitblt.c,v 1.7tsi Exp $ */
+/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
+/***********************************************************
+
+Copyright 1987, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+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
+OPEN GROUP 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 Open Group 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 Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+/* $Xorg: mfbbitblt.c,v 1.4 2001/02/09 02:05:18 xorgcvs Exp $ */
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xprotostr.h>
+
+#include "regionstr.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+
+#include "mi.h"
+
+#include "mfb.h"
+#include "maskbits.h"
+
+
+/* CopyArea and CopyPlane for a monchrome frame buffer
+
+
+    clip the source rectangle to the source's available bits.  (this
+avoids copying unnecessary pieces that will just get exposed anyway.)
+this becomes the new shape of the destination.
+    clip the destination region to the composite clip in the
+GC.  this requires translating the destination region to (dstx, dsty).
+    build a list of source points, one for each rectangle in the
+destination.  this is a simple translation.
+    go do the multiple rectangle copies
+    do graphics exposures
+*/
+/** Optimized for drawing pixmaps into windows, especially when drawing into
+ ** unobscured windows.  Calls to the general-purpose region code were
+ ** replaced with rectangle-to-rectangle clipping comparisions.  This is
+ ** possible, since the pixmap is a single rectangle.  In an unobscured
+ ** window, the destination clip is also a single rectangle, and region
+ ** code can be avoided entirely.  This is a big savings, since the region
+ ** code uses XAlloc() and makes many function calls.
+ **
+ ** In addition, if source is a pixmap, there is no need to call the
+ ** expensive miHandleExposures() routine.  Instead, we simply return NULL.
+ **
+ ** Previously, drawing a pixmap into an unobscured window executed at least
+ ** 8 XAlloc()'s, 30 function calls, and hundreds of lines of code.
+ **
+ ** Now, the same operation requires no XAlloc()'s, no region function calls,
+ ** and much less overhead.  Nice for drawing lots of small pixmaps.
+ */
+ 
+
+void
+mfbDoBitblt (pSrc, pDst, alu, prgnDst, pptSrc)
+    DrawablePtr	    pSrc, pDst;
+    int		    alu;
+    RegionPtr	    prgnDst;
+    DDXPointPtr	    pptSrc;
+{
+    switch (alu)
+    {
+    case GXcopy:
+	mfbDoBitbltCopy (pSrc, pDst, alu, prgnDst, pptSrc);
+	break;
+    case GXxor:
+	mfbDoBitbltXor (pSrc, pDst, alu, prgnDst, pptSrc);
+	break;
+    case GXcopyInverted:
+	mfbDoBitbltCopyInverted (pSrc, pDst, alu, prgnDst, pptSrc);
+	break;
+    case GXor:
+	mfbDoBitbltOr (pSrc, pDst, alu, prgnDst, pptSrc);
+	break;
+    default:
+	mfbDoBitbltGeneral (pSrc, pDst, alu, prgnDst, pptSrc);
+	break;
+    }
+}
+
+RegionPtr
+mfbCopyArea(pSrcDrawable, pDstDrawable,
+	    pGC, srcx, srcy, width, height, dstx, dsty)
+register DrawablePtr pSrcDrawable;
+register DrawablePtr pDstDrawable;
+register GC *pGC;
+int srcx, srcy;
+int width, height;
+int dstx, dsty;
+{
+    RegionPtr prgnSrcClip = NULL; /* may be a new region, or just a copy */
+    Bool freeSrcClip = FALSE;
+
+    RegionPtr prgnExposed;
+    RegionRec rgnDst;
+    DDXPointPtr pptSrc;
+    register DDXPointPtr ppt;
+    register BoxPtr pbox;
+    int i;
+    register int dx;
+    register int dy;
+    xRectangle origSource;
+    DDXPointRec origDest;
+    int numRects;
+    BoxRec fastBox;
+    int fastClip = 0;		/* for fast clipping with pixmap source */
+    int fastExpose = 0;		/* for fast exposures with pixmap source */
+    void (*localDoBitBlt)(
+	DrawablePtr /*pSrc*/,
+	DrawablePtr /*pDst*/,
+	int /*alu*/,
+	RegionPtr /*prgnDst*/,
+	DDXPointPtr /*pptSrc*/);
+
+    origSource.x = srcx;
+    origSource.y = srcy;
+    origSource.width = width;
+    origSource.height = height;
+    origDest.x = dstx;
+    origDest.y = dsty;
+
+    if ((pSrcDrawable != pDstDrawable) &&
+	pSrcDrawable->pScreen->SourceValidate)
+    {
+	(*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, srcx, srcy, width, height);
+    }
+
+    switch (pGC->alu) {
+    case GXcopy:
+	localDoBitBlt = mfbDoBitbltCopy;
+	break;
+    case GXcopyInverted:
+	localDoBitBlt = mfbDoBitbltCopyInverted;
+	break;
+    case GXxor:
+	localDoBitBlt = mfbDoBitbltXor;
+	break;
+    case GXor:
+	localDoBitBlt = mfbDoBitbltOr;
+	break;
+    default:
+	localDoBitBlt = mfbDoBitbltGeneral;
+	break;
+    }
+
+    srcx += pSrcDrawable->x;
+    srcy += pSrcDrawable->y;
+
+    /* clip the source */
+
+    if (pSrcDrawable->type == DRAWABLE_PIXMAP)
+    {
+	if ((pSrcDrawable == pDstDrawable) &&
+	    (pGC->clientClipType == CT_NONE))
+	{
+	    prgnSrcClip = pGC->pCompositeClip;
+	}
+	else
+	{
+	    fastClip = 1;
+	}
+    }
+    else
+    {
+	if (pGC->subWindowMode == IncludeInferiors)
+	{
+	    if (!((WindowPtr) pSrcDrawable)->parent)
+	    {
+		/*
+		 * special case bitblt from root window in
+		 * IncludeInferiors mode; just like from a pixmap
+		 */
+		fastClip = 1;
+	    }
+	    else if ((pSrcDrawable == pDstDrawable) &&
+		(pGC->clientClipType == CT_NONE))
+	    {
+		prgnSrcClip = pGC->pCompositeClip;
+	    }
+	    else
+	    {
+		prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
+		freeSrcClip = TRUE;
+	    }
+	}
+	else
+	{
+	    prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
+	}
+    }
+
+    fastBox.x1 = srcx;
+    fastBox.y1 = srcy;
+    fastBox.x2 = srcx + width;
+    fastBox.y2 = srcy + height;
+
+    /* Don't create a source region if we are doing a fast clip */
+    if (fastClip)
+    {
+	fastExpose = 1;
+	/*
+	 * clip the source; if regions extend beyond the source size,
+ 	 * make sure exposure events get sent
+	 */
+	if (fastBox.x1 < pSrcDrawable->x)
+	{
+	    fastBox.x1 = pSrcDrawable->x;
+	    fastExpose = 0;
+	}
+	if (fastBox.y1 < pSrcDrawable->y)
+	{
+	    fastBox.y1 = pSrcDrawable->y;
+	    fastExpose = 0;
+	}
+	if (fastBox.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
+	{
+	    fastBox.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+	    fastExpose = 0;
+	}
+	if (fastBox.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
+	{
+	    fastBox.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+	    fastExpose = 0;
+	}
+    }
+    else
+    {
+	REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+	REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
+    }
+
+    dstx += pDstDrawable->x;
+    dsty += pDstDrawable->y;
+
+    if (pDstDrawable->type == DRAWABLE_WINDOW)
+    {
+	if (!((WindowPtr)pDstDrawable)->realized)
+	{
+	    if (!fastClip)
+		REGION_UNINIT(pGC->pScreen, &rgnDst);
+	    if (freeSrcClip)
+		REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+	    return NULL;
+	}
+    }
+
+    dx = srcx - dstx;
+    dy = srcy - dsty;
+
+    /* Translate and clip the dst to the destination composite clip */
+    if (fastClip)
+    {
+	RegionPtr cclip;
+
+        /* Translate the region directly */
+        fastBox.x1 -= dx;
+        fastBox.x2 -= dx;
+        fastBox.y1 -= dy;
+        fastBox.y2 -= dy;
+
+	/* If the destination composite clip is one rectangle we can
+	   do the clip directly.  Otherwise we have to create a full
+	   blown region and call intersect */
+	cclip = pGC->pCompositeClip;
+        if (REGION_NUM_RECTS(cclip) == 1)
+        {
+	    BoxPtr pBox = REGION_RECTS(cclip);
+
+	    if (fastBox.x1 < pBox->x1) fastBox.x1 = pBox->x1;
+	    if (fastBox.x2 > pBox->x2) fastBox.x2 = pBox->x2;
+	    if (fastBox.y1 < pBox->y1) fastBox.y1 = pBox->y1;
+	    if (fastBox.y2 > pBox->y2) fastBox.y2 = pBox->y2;
+
+	    /* Check to see if the region is empty */
+	    if (fastBox.x1 >= fastBox.x2 || fastBox.y1 >= fastBox.y2)
+	    {
+		REGION_NULL(pGC->pScreen, &rgnDst);
+	    }
+	    else
+	    {
+		REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+	    }
+	}
+        else
+	{
+	    /* We must turn off fastClip now, since we must create
+	       a full blown region.  It is intersected with the
+	       composite clip below. */
+	    fastClip = 0;
+	    REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+	}
+    }
+    else
+    {
+        REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
+    }
+
+    if (!fastClip)
+    {
+	REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, pGC->pCompositeClip);
+    }
+
+    /* Do bit blitting */
+    numRects = REGION_NUM_RECTS(&rgnDst);
+    if (numRects && width && height)
+    {
+	if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
+						  sizeof(DDXPointRec))))
+	{
+	    REGION_UNINIT(pGC->pScreen, &rgnDst);
+	    if (freeSrcClip)
+		REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+	    return NULL;
+	}
+	pbox = REGION_RECTS(&rgnDst);
+	ppt = pptSrc;
+	for (i = numRects; --i >= 0; pbox++, ppt++)
+	{
+	    ppt->x = pbox->x1 + dx;
+	    ppt->y = pbox->y1 + dy;
+	}
+    
+	if (pGC->planemask & 1)
+	    (*localDoBitBlt) (pSrcDrawable, pDstDrawable, pGC->alu, &rgnDst, pptSrc);
+
+	DEALLOCATE_LOCAL(pptSrc);
+    }
+
+    prgnExposed = NULL;
+    if (pGC->fExpose) 
+    {
+        /* Pixmap sources generate a NoExposed (we return NULL to do this) */
+        if (!fastExpose)
+	    prgnExposed =
+		miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
+				  origSource.x, origSource.y,
+				  (int)origSource.width,
+				  (int)origSource.height,
+				  origDest.x, origDest.y, (unsigned long)0);
+    }
+    REGION_UNINIT(pGC->pScreen, &rgnDst);
+    if (freeSrcClip)
+	REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+    return prgnExposed;
+}
+
+
+/*
+ * Devices which use mfb for 1-bit pixmap support
+ * must register a function for n-to-1 copy operations
+ */
+
+static unsigned long	copyPlaneGeneration;
+static int		copyPlaneScreenIndex = -1;
+
+Bool
+mfbRegisterCopyPlaneProc (pScreen, proc)
+    ScreenPtr	pScreen;
+    RegionPtr	(*proc)(
+        DrawablePtr         /* pSrcDrawable */,
+        DrawablePtr         /* pDstDrawable */,
+        GCPtr               /* pGC */,
+        int                 /* srcx */,
+        int                 /* srcy */,
+        int                 /* width */,
+        int                 /* height */,
+        int                 /* dstx */,
+        int                 /* dsty */,
+        unsigned long       /* bitPlane */);
+{
+    if (copyPlaneGeneration != serverGeneration)
+    {
+	copyPlaneScreenIndex = AllocateScreenPrivateIndex();
+	if (copyPlaneScreenIndex < 0)
+	    return FALSE;
+	copyPlaneGeneration = serverGeneration;
+    }
+    pScreen->devPrivates[copyPlaneScreenIndex].fptr = proc;
+    return TRUE;
+}
+
+/*
+    if fg == 1 and bg ==0, we can do an ordinary CopyArea.
+    if fg == bg, we can do a CopyArea with alu = mfbReduceRop(alu, fg)
+    if fg == 0 and bg == 1, we use the same rasterop, with
+	source operand inverted.
+
+    CopyArea deals with all of the graphics exposure events.
+    This code depends on knowing that we can change the
+alu in the GC without having to call ValidateGC() before calling
+CopyArea().
+
+*/
+
+
+RegionPtr
+mfbCopyPlane(pSrcDrawable, pDstDrawable,
+	    pGC, srcx, srcy, width, height, dstx, dsty, plane)
+DrawablePtr pSrcDrawable, pDstDrawable;
+register GC *pGC;
+int srcx, srcy;
+int width, height;
+int dstx, dsty;
+unsigned long plane;
+{
+    int alu;
+    RegionPtr	prgnExposed;
+    RegionPtr	(*copyPlane)(
+        DrawablePtr         /* pSrcDrawable */,
+        DrawablePtr         /* pDstDrawable */,
+        GCPtr               /* pGC */,
+        int                 /* srcx */,
+        int                 /* srcy */,
+        int                 /* width */,
+        int                 /* height */,
+        int                 /* dstx */,
+        int                 /* dsty */,
+        unsigned long       /* bitPlane */);
+
+
+    if (pSrcDrawable->depth != 1)
+    {
+	if (copyPlaneScreenIndex >= 0 &&
+	    (copyPlane =
+		pSrcDrawable->pScreen->devPrivates[copyPlaneScreenIndex].fptr)
+	    )
+	{
+	    return (*copyPlane) (pSrcDrawable, pDstDrawable,
+			   pGC, srcx, srcy, width, height, dstx, dsty, plane);
+	}  
+	else
+	{
+	    FatalError ("No copyPlane proc registered for depth %d\n",
+			pSrcDrawable->depth);
+	}
+    }
+    if (plane != 1)
+	return NULL;
+
+    if ((pGC->fgPixel & 1) == 1 && (pGC->bgPixel & 1) == 0)
+    {
+	prgnExposed = (*pGC->ops->CopyArea)(pSrcDrawable, pDstDrawable,
+			 pGC, srcx, srcy, width, height, dstx, dsty);
+    }
+    else if ((pGC->fgPixel & 1) == (pGC->bgPixel & 1))
+    {
+	alu = pGC->alu;
+	pGC->alu = mfbReduceRop(pGC->alu, pGC->fgPixel);
+	prgnExposed = (*pGC->ops->CopyArea)(pSrcDrawable, pDstDrawable,
+			 pGC, srcx, srcy, width, height, dstx, dsty);
+	pGC->alu = alu;
+    }
+    else /* need to invert the src */
+    {
+	alu = pGC->alu;
+	pGC->alu = InverseAlu[alu];
+	prgnExposed = (*pGC->ops->CopyArea)(pSrcDrawable, pDstDrawable,
+			 pGC, srcx, srcy, width, height, dstx, dsty);
+	pGC->alu = alu;
+    }
+    return prgnExposed;
+}
+