/* * * Copyright © 2000 Keith Packard * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, 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 Keith Packard not be used in * advertising or publicity pertaining to distribution of the software without * specific, written prior permission. Keith Packard makes no * representations about the suitability of this software for any purpose. It * is provided "as is" without express or implied warranty. * * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL KEITH PACKARD 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. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include <stdlib.h> #include <X11/X.h> #include "scrnintstr.h" #include "windowstr.h" #include <X11/fonts/font.h> #include "dixfontstr.h" #include <X11/fonts/fontstruct.h> #include "mi.h" #include "regionstr.h" #include "globals.h" #include "gcstruct.h" #include "shadow.h" #include "fb.h" /* * Expose 8bpp depth 4 */ /* * 32->8 conversion: * * 7 6 5 4 3 2 1 0 * A B C D E F G H * * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * m1 D x x x x x x x C x x x x x x x B x x x x x x x A x x x x x x x sha[0] << (7-(p)) * m2 x x x x H x x x x x x x G x x x x x x x F x x x x x x x E x x x sha[1] << (3-(p)) * m3 D C B A m1 & 0x80808080 * m4 H G F E m2 & 0x08080808 * m5 D H C G B F A E m3 | m4 * m6 D H C G B F m5 >> 9 * m7 D H C D G H B C F G A B E F m5 | m6 * m8 D H C D G H m7 >> 18 * m9 D H C D G H B C D F G H A B C D E F G H m7 | m8 */ #define PL_SHIFT 8 #define PL_UNIT (1 << PL_SHIFT) #define PL_MASK (PL_UNIT - 1) #if 0 #define GetBits(p,o,d) { \ CARD32 m1,m2,m3,m4,m5,m6,m7,m8; \ m1 = sha[o] << (7 - (p)); \ m2 = sha[(o)+1] << (3 - (p)); \ m3 = m1 & 0x80808080; \ m4 = m2 & 0x08080808; \ m5 = m3 | m4; \ m6 = m5 >> 9; \ m7 = m5 | m6; \ m8 = m7 >> 18; \ d = m7 | m8; \ } #else #define GetBits(p,o,d) { \ CARD32 m5,m7; \ m5 = ((sha[o] << (7 - (p))) & 0x80808080) | ((sha[(o)+1] << (3 - (p))) & 0x08080808); \ m7 = m5 | (m5 >> 9); \ d = m7 | (m7 >> 18); \ } #endif void shadowUpdatePlanar4x8(ScreenPtr pScreen, shadowBufPtr pBuf) { RegionPtr damage = DamageRegion(pBuf->pDamage); PixmapPtr pShadow = pBuf->pPixmap; int nbox = RegionNumRects(damage); BoxPtr pbox = RegionRects(damage); CARD32 *shaBase, *shaLine, *sha; CARD8 s1, s2, s3, s4; FbStride shaStride; int scrBase, scrLine, scr; int shaBpp; _X_UNUSED int shaXoff, shaYoff; int x, y, w, h, width; int i; CARD32 *winBase = NULL, *win; CARD32 winSize; int plane; fbGetStipDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, shaYoff); while (nbox--) { x = pbox->x1 * shaBpp; y = pbox->y1; w = (pbox->x2 - pbox->x1) * shaBpp; h = pbox->y2 - pbox->y1; w = (w + (x & PL_MASK) + PL_MASK) >> PL_SHIFT; x &= ~PL_MASK; scrLine = (x >> PL_SHIFT); shaLine = shaBase + y * shaStride + (x >> FB_SHIFT); while (h--) { for (plane = 0; plane < 4; plane++) { width = w; scr = scrLine; sha = shaLine; winSize = 0; scrBase = 0; while (width) { /* how much remains in this window */ i = scrBase + winSize - scr; if (i <= 0 || scr < scrBase) { winBase = (CARD32 *) (*pBuf->window) (pScreen, y, (scr << 4) | (plane), SHADOW_WINDOW_WRITE, &winSize, pBuf->closure); if (!winBase) return; winSize >>= 2; scrBase = scr; i = winSize; } win = winBase + (scr - scrBase); if (i > width) i = width; width -= i; scr += i; while (i--) { GetBits(plane, 0, s1); GetBits(plane, 2, s2); GetBits(plane, 4, s3); GetBits(plane, 6, s4); *win++ = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); sha += 8; } } } shaLine += shaStride; y++; } pbox++; } }