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Diffstat (limited to 'iplan2p4/iplbitblt.c')
| -rw-r--r-- | iplan2p4/iplbitblt.c | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/iplan2p4/iplbitblt.c b/iplan2p4/iplbitblt.c new file mode 100644 index 000000000..50927e14f --- /dev/null +++ b/iplan2p4/iplbitblt.c @@ -0,0 +1,384 @@ +/* $XFree86: xc/programs/Xserver/iplan2p4/iplbitblt.c,v 3.1 1998/03/20 21:08:08 hohndel Exp $ */ +/* + * ipl copy area + */ + +/* + +Copyright (c) 1989 X Consortium + +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 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 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 +X CONSORTIUM 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 X Consortium 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 X Consortium. + +Author: Keith Packard + +*/ +/* $XConsortium: iplbitblt.c,v 5.51 94/05/27 11:00:56 dpw Exp $ */ + +/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with +interleaved planes */ + +#include "X.h" +#include "Xmd.h" +#include "Xproto.h" +#include "gcstruct.h" +#include "windowstr.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "regionstr.h" +#include "ipl.h" +#include "fastblt.h" +#define MFB_CONSTS_ONLY +#include "maskbits.h" + +#include "iplmskbits.h" + +RegionPtr +iplBitBlt (pSrcDrawable, pDstDrawable, + pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane) + register DrawablePtr pSrcDrawable; + register DrawablePtr pDstDrawable; + GC *pGC; + int srcx, srcy; + int width, height; + int dstx, dsty; + void (*doBitBlt)(); + unsigned long bitPlane; +{ + RegionPtr prgnSrcClip; /* 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 */ + + 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 = iplGetCompositeClip(pGC); + } + 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 = iplGetCompositeClip(pGC); + } + 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 */ + + /* XXX because CopyPlane uses this routine for 8-to-1 bit + * copies, this next line *must* also correctly fetch the + * composite clip from an mfb gc + */ + + cclip = iplGetCompositeClip(pGC); + 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, + iplGetCompositeClip(pGC)); + } + + /* 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->alu, &rgnDst, pptSrc, pGC->planemask, bitPlane); + DEALLOCATE_LOCAL(pptSrc); + } + + prgnExposed = NULL; + if (pGC->fExpose) + { + extern RegionPtr miHandleExposures(); + + /* 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; +} + + +void +iplDoBitblt (pSrc, pDst, alu, prgnDst, pptSrc, planemask) + DrawablePtr pSrc, pDst; + int alu; + RegionPtr prgnDst; + DDXPointPtr pptSrc; + unsigned long planemask; +{ + void (*blt)() = iplDoBitbltGeneral; + if ((planemask & INTER_PMSK) == INTER_PMSK) { + switch (alu) { + case GXcopy: + blt = iplDoBitbltCopy; + break; + case GXxor: + blt = iplDoBitbltXor; + break; + case GXor: + blt = iplDoBitbltOr; + break; + } + } + (*blt) (pSrc, pDst, alu, prgnDst, pptSrc, planemask); +} + +RegionPtr +iplCopyArea(pSrcDrawable, pDstDrawable, + pGC, srcx, srcy, width, height, dstx, dsty) + register DrawablePtr pSrcDrawable; + register DrawablePtr pDstDrawable; + GC *pGC; + int srcx, srcy; + int width, height; + int dstx, dsty; +{ + void (*doBitBlt) (); + + doBitBlt = iplDoBitbltCopy; + if (pGC->alu != GXcopy || (pGC->planemask & INTER_PMSK) != INTER_PMSK) + { + doBitBlt = iplDoBitbltGeneral; + if ((pGC->planemask & INTER_PMSK) == INTER_PMSK) + { + switch (pGC->alu) { + case GXxor: + doBitBlt = iplDoBitbltXor; + break; + case GXor: + doBitBlt = iplDoBitbltOr; + break; + } + } + } + return iplBitBlt (pSrcDrawable, pDstDrawable, + pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, 0L); +} + +/* shared among all different ipl depths through linker magic */ +RegionPtr (*iplPuntCopyPlane)(); + +RegionPtr iplCopyPlane(pSrcDrawable, pDstDrawable, + pGC, srcx, srcy, width, height, dstx, dsty, bitPlane) + DrawablePtr pSrcDrawable; + DrawablePtr pDstDrawable; + GCPtr pGC; + int srcx, srcy; + int width, height; + int dstx, dsty; + unsigned long bitPlane; +{ + RegionPtr ret; + extern RegionPtr miHandleExposures(); + void (*doBitBlt)(); + + ret = (*iplPuntCopyPlane) (pSrcDrawable, pDstDrawable, + pGC, srcx, srcy, width, height, dstx, dsty, bitPlane); + return ret; +} |