Initial revision

1 files changed, 219 insertions, 0 deletions

diff --git a/hw/xfree86/xaa/xaaBitBlt.c b/hw/xfree86/xaa/xaaBitBlt.c
new file mode 100644
index 000000000..015b539e5
--- /dev/null
+++ b/hw/xfree86/xaa/xaaBitBlt.c
@@ -0,0 +1,219 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/xaa/xaaBitBlt.c,v 1.3 1998/12/06 06:08:39 dawes Exp $ */
+
+/* 
+   This is a lighter version of cfbBitBlt.  We calculate the boxes
+   when accelerating pixmap->screen and screen->screen copies. 
+   We also pass the GC to the doBitBlt function so that it has access
+   to the fg and bg so CopyPlane can use this. 
+*/
+
+#include "misc.h"
+#include "xf86.h"
+#include "xf86_ansic.h"
+#include "xf86_OSproc.h"
+
+#include "X.h"
+#include "mi.h"
+#include "pixmapstr.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "xaalocal.h"
+
+
+RegionPtr
+XAABitBlt(
+    DrawablePtr pSrcDrawable,
+    DrawablePtr pDstDrawable,
+    GC *pGC,
+    int srcx, int srcy,
+    int width, int height,
+    int dstx, int dsty,
+    void (*doBitBlt)(DrawablePtr, DrawablePtr, GCPtr, RegionPtr, DDXPointPtr),
+    unsigned long bitPlane )
+{
+
+    RegionPtr prgnSrcClip = NULL; /* may be a new region, or just a copy */
+    RegionPtr prgnExposed;
+    Bool freeSrcClip = FALSE;
+    RegionRec rgnDst;
+    DDXPointPtr pptSrc, ppt;
+    DDXPointRec origDest;
+    BoxPtr pbox;
+    BoxRec fastBox;
+    int i, dx, dy, numRects;
+    xRectangle origSource;
+    int fastClip = 0;		/* for fast clipping with pixmap source */
+    int fastExpose = 0;		/* for fast exposures with pixmap source */
+
+    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);
+    }
+
+    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 {	/* Window */
+	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_INIT(pGC->pScreen, &rgnDst, NullBox, 0);
+	    } 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;
+	}
+
+	(*doBitBlt) (pSrcDrawable, pDstDrawable, pGC, &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, bitPlane);
+    }
+    REGION_UNINIT(pGC->pScreen, &rgnDst);
+    if (freeSrcClip)
+	REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+    return prgnExposed;
+}