x11include/xorg-server-1.13.0/shrotpack.h

a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync/*
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync *
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Copyright © 2000 Keith Packard
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync *
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Permission to use, copy, modify, distribute, and sell this software and its
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * documentation for any purpose is hereby granted without fee, provided that
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * the above copyright notice appear in all copies and that both that
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * copyright notice and this permission notice appear in supporting
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * documentation, and that the name of Keith Packard not be used in
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * advertising or publicity pertaining to distribution of the software without
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * specific, written prior permission.  Keith Packard makes no
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * representations about the suitability of this software for any purpose.  It
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * is provided "as is" without express or implied warranty.
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync *
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * PERFORMANCE OF THIS SOFTWARE.
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync/*
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Thanks to Daniel Chemko <dchemko@intrinsyc.com> for making the 90 and 180
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * orientations work.
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#ifdef HAVE_DIX_CONFIG_H
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include <dix-config.h>
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include <stdlib.h>
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    <X11/X.h>
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "scrnintstr.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "windowstr.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    <X11/fonts/font.h>
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "dixfontstr.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    <X11/fonts/fontstruct.h>
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "mi.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "regionstr.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "globals.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "gcstruct.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "shadow.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#include    "fb.h"
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define DANDEBUG         0
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if ROTATE == 270
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRLEFT(x,y,w,h)    (pScreen->height - ((y) + (h)))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRY(x,y,w,h)       (x)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRWIDTH(x,y,w,h)   (h)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define FIRSTSHA(x,y,w,h)   (((y) + (h) - 1) * shaStride + (x))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define STEPDOWN(x,y,w,h)   ((w)--)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define NEXTY(x,y,w,h)      ((x)++)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPX(stride)    -(stride)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPY(stride)    (1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#elif ROTATE == 90
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRLEFT(x,y,w,h)    (y)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRY(x,y,w,h)       (pScreen->width - ((x) + (w)) - 1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRWIDTH(x,y,w,h)   (h)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define FIRSTSHA(x,y,w,h)   ((y) * shaStride + (x + w - 1))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define STEPDOWN(x,y,w,h)   ((w)--)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define NEXTY(x,y,w,h)      ((void)(x))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPX(stride)    (stride)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPY(stride)    (-1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#elif ROTATE == 180
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRLEFT(x,y,w,h)    (pScreen->width - ((x) + (w)))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRY(x,y,w,h)       (pScreen->height - ((y) + (h)) - 1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRWIDTH(x,y,w,h)   (w)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define FIRSTSHA(x,y,w,h)   ((y + h - 1) * shaStride + (x + w - 1))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define STEPDOWN(x,y,w,h)   ((h)--)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define NEXTY(x,y,w,h)      ((void)(y))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPX(stride)    (-1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPY(stride)    -(stride)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#else
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRLEFT(x,y,w,h)    (x)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRY(x,y,w,h)       (y)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SCRWIDTH(x,y,w,h)   (w)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define FIRSTSHA(x,y,w,h)   ((y) * shaStride + (x))
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define STEPDOWN(x,y,w,h)   ((h)--)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define NEXTY(x,y,w,h)      ((y)++)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPX(stride)    (1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#define SHASTEPY(stride)    (stride)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsyncvoid
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsyncFUNC(ScreenPtr pScreen, shadowBufPtr pBuf)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync{
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    RegionPtr damage = shadowDamage(pBuf);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    PixmapPtr pShadow = pBuf->pPixmap;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    int nbox = RegionNumRects(damage);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    BoxPtr pbox = RegionRects(damage);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    FbBits *shaBits;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    Data *shaBase, *shaLine, *sha;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    FbStride shaStride;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    int scrBase, scrLine, scr;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    int shaBpp;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    _X_UNUSED int shaXoff, shaYoff;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    int x, y, w, h, width;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    int i;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    Data *winBase = NULL, *win;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    CARD32 winSize;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    fbGetDrawable(&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff,
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                  shaYoff);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    shaBase = (Data *) shaBits;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    shaStride = shaStride * sizeof(FbBits) / sizeof(Data);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if (DANDEBUG > 1)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    ErrorF
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        ("-> Entering Shadow Update:\r\n   |- Origins: pShadow=%x, pScreen=%x, damage=%x\r\n   |- Metrics: shaStride=%d, shaBase=%x, shaBpp=%d\r\n   |                                                     \n",
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync         pShadow, pScreen, damage, shaStride, shaBase, shaBpp);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    while (nbox--) {
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        x = pbox->x1;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        y = pbox->y1;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        w = (pbox->x2 - pbox->x1);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        h = pbox->y2 - pbox->y1;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if (DANDEBUG > 2)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        ErrorF
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            ("   |-> Redrawing box - Metrics: X=%d, Y=%d, Width=%d, Height=%d\n",
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync             x, y, w, h);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        scrLine = SCRLEFT(x, y, w, h);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        shaLine = shaBase + FIRSTSHA(x, y, w, h);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        while (STEPDOWN(x, y, w, h)) {
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            winSize = 0;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            scrBase = 0;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            width = SCRWIDTH(x, y, w, h);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            scr = scrLine;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            sha = shaLine;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if (DANDEBUG > 3)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            ErrorF("   |   |-> StepDown - Metrics: width=%d, scr=%x, sha=%x\n",
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                   width, scr, sha);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            while (width) {
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                /*  how much remains in this window */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                i = scrBase + winSize - scr;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                if (i <= 0 || scr < scrBase) {
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    winBase = (Data *) (*pBuf->window) (pScreen,
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                                                        SCRY(x, y, w, h),
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                                                        scr * sizeof(Data),
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                                                        SHADOW_WINDOW_WRITE,
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                                                        &winSize,
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                                                        pBuf->closure);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    if (!winBase)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                        return;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    scrBase = scr;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    winSize /= sizeof(Data);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    i = winSize;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if(DANDEBUG > 4)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    ErrorF
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                        ("   |   |   |-> Starting New Line - Metrics: winBase=%x, scrBase=%x, winSize=%d\r\n   |   |   |   Xstride=%d, Ystride=%d, w=%d h=%d\n",
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                         winBase, scrBase, winSize, SHASTEPX(shaStride),
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                         SHASTEPY(shaStride), w, h);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                }
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                win = winBase + (scr - scrBase);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                if (i > width)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    i = width;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                width -= i;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                scr += i;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if(DANDEBUG > 5)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                ErrorF
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    ("   |   |   |-> Writing Line - Metrics: win=%x, sha=%x\n",
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                     win, sha);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                while (i--) {
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#if(DANDEBUG > 6)
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    ErrorF
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                        ("   |   |   |-> Writing Pixel - Metrics: win=%x, sha=%d, remaining=%d\n",
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                         win, sha, i);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync#endif
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    *win++ = *sha;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                    sha += SHASTEPX(shaStride);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync                }               /*  i */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            }                   /*  width */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            shaLine += SHASTEPY(shaStride);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync            NEXTY(x, y, w, h);
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        }                       /*  STEPDOWN */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync        pbox++;
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync    }                           /*  nbox */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync}