b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/*
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * $XFree86: xc/programs/Xserver/miext/shadow/shrotpack.h,v 1.3 2001/05/29 04:54:13 keithp Exp $
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync *
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Copyright © 2000 Keith Packard
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync *
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Permission to use, copy, modify, distribute, and sell this software and its
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * documentation for any purpose is hereby granted without fee, provided that
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * the above copyright notice appear in all copies and that both that
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * copyright notice and this permission notice appear in supporting
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * documentation, and that the name of Keith Packard not be used in
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * advertising or publicity pertaining to distribution of the software without
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * specific, written prior permission. Keith Packard makes no
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * representations about the suitability of this software for any purpose. It
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * is provided "as is" without express or implied warranty.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync *
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * PERFORMANCE OF THIS SOFTWARE.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync/*
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * Thanks to Daniel Chemko <dchemko@intrinsyc.com> for making the 90 and 180
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync * orientations work.
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#ifdef HAVE_DIX_CONFIG_H
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include <dix-config.h>
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include <stdlib.h>
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include <X11/X.h>
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "scrnintstr.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "windowstr.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include <X11/fonts/font.h>
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "dixfontstr.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include <X11/fonts/fontstruct.h>
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "mi.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "regionstr.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "globals.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "gcstruct.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "shadow.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#include "fb.h"
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define DANDEBUG 0
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if ROTATE == 270
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRLEFT(x,y,w,h) (pScreen->height - ((y) + (h)))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRY(x,y,w,h) (x)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRWIDTH(x,y,w,h) (h)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define FIRSTSHA(x,y,w,h) (((y) + (h) - 1) * shaStride + (x))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define STEPDOWN(x,y,w,h) ((w)--)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define NEXTY(x,y,w,h) ((x)++)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPX(stride) -(stride)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPY(stride) (1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#elif ROTATE == 90
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRLEFT(x,y,w,h) (y)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRY(x,y,w,h) (pScreen->width - ((x) + (w)) - 1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRWIDTH(x,y,w,h) (h)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define FIRSTSHA(x,y,w,h) ((y) * shaStride + (x + w - 1))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define STEPDOWN(x,y,w,h) ((w)--)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define NEXTY(x,y,w,h) ((void)(x))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPX(stride) (stride)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPY(stride) (-1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#elif ROTATE == 180
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRLEFT(x,y,w,h) (pScreen->width - ((x) + (w)))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRY(x,y,w,h) (pScreen->height - ((y) + (h)) - 1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRWIDTH(x,y,w,h) (w)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define FIRSTSHA(x,y,w,h) ((y + h - 1) * shaStride + (x + w - 1))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define STEPDOWN(x,y,w,h) ((h)--)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define NEXTY(x,y,w,h) ((void)(y))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPX(stride) (-1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPY(stride) -(stride)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#else
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRLEFT(x,y,w,h) (x)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRY(x,y,w,h) (y)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SCRWIDTH(x,y,w,h) (w)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define FIRSTSHA(x,y,w,h) ((y) * shaStride + (x))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define STEPDOWN(x,y,w,h) ((h)--)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define NEXTY(x,y,w,h) ((y)++)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPX(stride) (1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#define SHASTEPY(stride) (stride)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncvoid
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsyncFUNC (ScreenPtr pScreen,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync shadowBufPtr pBuf)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync{
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync RegionPtr damage = shadowDamage (pBuf);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync PixmapPtr pShadow = pBuf->pPixmap;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int nbox = REGION_NUM_RECTS (damage);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync BoxPtr pbox = REGION_RECTS (damage);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync FbBits *shaBits;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync Data *shaBase, *shaLine, *sha;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync FbStride shaStride;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int scrBase, scrLine, scr;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int shaBpp;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int shaXoff, shaYoff; /* XXX assumed to be zero */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int x, y, w, h, width;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync int i;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync Data *winBase = NULL, *win;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync CARD32 winSize;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync fbGetDrawable (&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff, shaYoff);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync shaBase = (Data *) shaBits;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync shaStride = shaStride * sizeof (FbBits) / sizeof (Data);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if (DANDEBUG > 1)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ErrorF ("-> Entering Shadow Update:\r\n |- Origins: pShadow=%x, pScreen=%x, damage=%x\r\n |- Metrics: shaStride=%d, shaBase=%x, shaBpp=%d\r\n | \n", pShadow, pScreen, damage, shaStride, shaBase, shaBpp);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync while (nbox--)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync x = pbox->x1;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync y = pbox->y1;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync w = (pbox->x2 - pbox->x1);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync h = pbox->y2 - pbox->y1;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if (DANDEBUG > 2)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ErrorF (" |-> Redrawing box - Metrics: X=%d, Y=%d, Width=%d, Height=%d\n", x, y, w, h);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync scrLine = SCRLEFT(x,y,w,h);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync shaLine = shaBase + FIRSTSHA(x,y,w,h);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync while (STEPDOWN(x,y,w,h))
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync winSize = 0;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync scrBase = 0;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync width = SCRWIDTH(x,y,w,h);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync scr = scrLine;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync sha = shaLine;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if (DANDEBUG > 3)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ErrorF (" | |-> StepDown - Metrics: width=%d, scr=%x, sha=%x\n", width, scr, sha);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync while (width)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync /* how much remains in this window */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync i = scrBase + winSize - scr;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync if (i <= 0 || scr < scrBase)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync winBase = (Data *) (*pBuf->window) (pScreen,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync SCRY(x,y,w,h),
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync scr * sizeof (Data),
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync SHADOW_WINDOW_WRITE,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync &winSize,
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync pBuf->closure);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync if(!winBase)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync return;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync scrBase = scr;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync winSize /= sizeof (Data);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync i = winSize;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if(DANDEBUG > 4)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ErrorF (" | | |-> Starting New Line - Metrics: winBase=%x, scrBase=%x, winSize=%d\r\n | | | Xstride=%d, Ystride=%d, w=%d h=%d\n", winBase, scrBase, winSize, SHASTEPX(shaStride), SHASTEPY(shaStride), w, h);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync }
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync win = winBase + (scr - scrBase);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync if (i > width)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync i = width;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync width -= i;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync scr += i;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if(DANDEBUG > 5)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ErrorF (" | | |-> Writing Line - Metrics: win=%x, sha=%x\n", win, sha);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync while (i--)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync {
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#if(DANDEBUG > 6)
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync ErrorF (" | | |-> Writing Pixel - Metrics: win=%x, sha=%d, remaining=%d\n", win, sha, i);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync#endif
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync *win++ = *sha;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync sha += SHASTEPX(shaStride);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync } /* i */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync } /* width */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync shaLine += SHASTEPY(shaStride);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync NEXTY(x,y,w,h);
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync } /* STEPDOWN */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync pbox++;
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync } /* nbox */
b8e299dddd091ae24e0c08c45d91b8f937bd14d2vboxsync}