diff options
Diffstat (limited to 'xorg-server/miext/shadow/shplanar8.c')
| -rw-r--r-- | xorg-server/miext/shadow/shplanar8.c | 151 |
1 files changed, 73 insertions, 78 deletions
diff --git a/xorg-server/miext/shadow/shplanar8.c b/xorg-server/miext/shadow/shplanar8.c index d0648147a..214fa9aac 100644 --- a/xorg-server/miext/shadow/shplanar8.c +++ b/xorg-server/miext/shadow/shplanar8.c @@ -90,86 +90,81 @@ #endif void -shadowUpdatePlanar4x8 (ScreenPtr pScreen, - shadowBufPtr pBuf) +shadowUpdatePlanar4x8(ScreenPtr pScreen, shadowBufPtr pBuf) { - RegionPtr damage = shadowDamage (pBuf); - 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; + RegionPtr damage = shadowDamage(pBuf); + 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; + 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++; + 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++; } } - |