/* * * 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" /* * 32 4-bit pixels per write */ #define PL_SHIFT 7 #define PL_UNIT (1 << PL_SHIFT) #define PL_MASK (PL_UNIT - 1) /* * 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 * m . . . H . . . G . . . F . . . E . . . D . . . C . . . B . . . A * m1 G . . . F . . . E . . . D . . . C . . . B . . . A . . . . . . . m << (7 - (p)) * m2 . H . . . G . . . F . . . E . . . D . . . C . . . B . . . A . . (m >> (p)) << 2 * m3 G E C A m1 & 0x80808080 * m4 H F D B m2 & 0x40404040 * m5 G H E F C D A B m3 | m4 * m6 G H E F C D G H A B E F m5 | (m5 >> 20) * m7 G H E F C D G H A B C D E F G H m6 | (m6 >> 10) */ #if 0 #define GetBits(p,o,d) {\ m = sha[o]; \ m1 = m << (7 - (p)); \ m2 = (m >> (p)) << 2; \ m3 = m1 & 0x80808080; \ m4 = m2 & 0x40404040; \ m5 = m3 | m4; \ m6 = m5 | (m5 >> 20); \ d = m6 | (m6 >> 10); \ } #else #define GetBits(p,o,d) {\ m = sha[o]; \ m5 = ((m << (7 - (p))) & 0x80808080) | (((m >> (p)) << 2) & 0x40404040); \ m6 = m5 | (m5 >> 20); \ d = m6 | (m6 >> 10); \ } #endif void shadowUpdatePlanar4 (ScreenPtr pScreen, shadowBufPtr pBuf) { RegionPtr damage = shadowDamage (pBuf); PixmapPtr pShadow = pBuf->pPixmap; int nbox = REGION_NUM_RECTS (damage); BoxPtr pbox = REGION_RECTS (damage); CARD32 *shaBase, *shaLine, *sha; FbStride shaStride; int scrBase, scrLine, scr; int shaBpp; int shaXoff, shaYoff; /* XXX assumed to be zero */ int x, y, w, h, width; int i; CARD32 *winBase = NULL, *win; CARD32 winSize; int plane; CARD32 m,m5,m6; CARD8 s1, s2, s3, s4; 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,1,s2); GetBits(plane,2,s3); GetBits(plane,3,s4); *win++ = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); sha += 4; } } } shaLine += shaStride; y++; } pbox++; } } shadowUpdateProc shadowUpdatePlanar4Weak(void) { return shadowUpdatePlanar4; } shadowUpdateProc shadowUpdatePlanar4x8Weak(void) { return shadowUpdatePlanar4x8; }