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Diffstat (limited to 'hw/xfree86/xaa/xaaBitBlt.c')
-rw-r--r--hw/xfree86/xaa/xaaBitBlt.c219
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;
+}
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