X-Git-Url: https://git.sesse.net/?p=rdpsrv;a=blobdiff_plain;f=Xserver%2Fprograms%2FXserver%2Fmfb%2Fmfbbitblt.c;fp=Xserver%2Fprograms%2FXserver%2Fmfb%2Fmfbbitblt.c;h=91781a7bfca2a9279d090d1a8bcea9a5284904dc;hp=0000000000000000000000000000000000000000;hb=b6e6afccf37f4ad0515ef2a698f714fdf1bf23b3;hpb=e3340a110a3b01756b8e67531395a33b40a17d37 diff --git a/Xserver/programs/Xserver/mfb/mfbbitblt.c b/Xserver/programs/Xserver/mfb/mfbbitblt.c new file mode 100644 index 0000000..91781a7 --- /dev/null +++ b/Xserver/programs/Xserver/mfb/mfbbitblt.c @@ -0,0 +1,478 @@ +/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */ +/*********************************************************** + +Copyright (c) 1987 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. + + +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. + +******************************************************************/ +/* $XConsortium: mfbbitblt.c,v 5.25 94/04/17 20:28:16 dpw Exp $ */ +#include "X.h" +#include "Xprotostr.h" + +#include "miscstruct.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; /* 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)(); + + 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 = ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->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 = ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->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 = ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->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, + ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->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 (((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->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)(); +{ + if (copyPlaneGeneration != serverGeneration) + { + copyPlaneScreenIndex = AllocateScreenPrivateIndex(); + if (copyPlaneScreenIndex < 0) + return FALSE; + copyPlaneGeneration = serverGeneration; + } + pScreen->devPrivates[copyPlaneScreenIndex].fptr = (pointer (*)()) 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)(); + + if (pSrcDrawable->depth != 1) + { + if (copyPlaneScreenIndex >= 0 && + (copyPlane = (RegionPtr (*)()) + 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; +}