diff options
Diffstat (limited to 'xorg-server/hw/xfree86/xaa/xaaBitBlt.c')
| -rw-r--r-- | xorg-server/hw/xfree86/xaa/xaaBitBlt.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/xaa/xaaBitBlt.c b/xorg-server/hw/xfree86/xaa/xaaBitBlt.c new file mode 100644 index 000000000..ebba74e55 --- /dev/null +++ b/xorg-server/hw/xfree86/xaa/xaaBitBlt.c @@ -0,0 +1,221 @@ + +/* + 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. +*/ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include "misc.h" +#include "xf86.h" +#include "xf86_OSproc.h" + +#include <X11/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_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)xalloc(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); + xfree(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; +} |