diff options
Diffstat (limited to 'miext')
| -rw-r--r-- | miext/shadow/Makefile.am | 1 | ||||
| -rw-r--r-- | miext/shadow/sh3224.c | 138 | ||||
| -rw-r--r-- | miext/shadow/shadow.h | 3 |
3 files changed, 142 insertions, 0 deletions
diff --git a/miext/shadow/Makefile.am b/miext/shadow/Makefile.am index 27cf41422..b611c9bb0 100644 --- a/miext/shadow/Makefile.am +++ b/miext/shadow/Makefile.am @@ -10,6 +10,7 @@ libshadow_la_SOURCES = \ c2p_core.h \ shadow.c \ shadow.h \ + sh3224.c \ shafb4.c \ shafb8.c \ shalloc.c \ diff --git a/miext/shadow/sh3224.c b/miext/shadow/sh3224.c new file mode 100644 index 000000000..ba541217e --- /dev/null +++ b/miext/shadow/sh3224.c @@ -0,0 +1,138 @@ +/* + * 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 "shadow.h" +#include "fb.h" + +#define Get8(a) ((CARD32) READ(a)) + +#if BITMAP_BIT_ORDER == MSBFirst +#define Get24(a) ((Get8(a) << 16) | (Get8((a)+1) << 8) | Get8((a)+2)) +#define Put24(a,p) ((WRITE((a+0), (CARD8) ((p) >> 16))), \ + (WRITE((a+1), (CARD8) ((p) >> 8))), \ + (WRITE((a+2), (CARD8) (p)))) +#else +#define Get24(a) (Get8(a) | (Get8((a)+1) << 8) | (Get8((a)+2)<<16)) +#define Put24(a,p) ((WRITE((a+0), (CARD8) (p))), \ + (WRITE((a+1), (CARD8) ((p) >> 8))), \ + (WRITE((a+2), (CARD8) ((p) >> 16)))) +#endif + +static void +sh24_32BltLine(CARD8 *srcLine, + CARD8 *dstLine, + int width) +{ + CARD32 *src; + CARD8 *dst; + int w; + CARD32 pixel; + + src = (CARD32 *) srcLine; + dst = dstLine; + w = width; + + while (((long)dst & 3) && w) { + w--; + pixel = READ(src++); + Put24(dst, pixel); + dst += 3; + } + /* Do four aligned pixels at a time */ + while (w >= 4) { + CARD32 s0, s1; + + s0 = READ(src++); + s1 = READ(src++); +#if BITMAP_BIT_ORDER == LSBFirst + WRITE((CARD32 *) dst, (s0 & 0xffffff) | (s1 << 24)); +#else + WRITE((CARD32 *) dst, (s0 << 8) | ((s1 & 0xffffff) >> 16)); +#endif + s0 = READ(src++); +#if BITMAP_BIT_ORDER == LSBFirst + WRITE((CARD32 *) (dst + 4), + ((s1 & 0xffffff) >> 8) | (s0 << 16)); +#else + WRITE((CARD32 *) (dst + 4), + (s1 << 16) | ((s0 & 0xffffff) >> 8)); +#endif + s1 = READ(src++); +#if BITMAP_BIT_ORDER == LSBFirst + WRITE((CARD32 *) (dst + 8), + ((s0 & 0xffffff) >> 16) | (s1 << 8)); +#else + WRITE((CARD32 *) (dst + 8), (s0 << 24) | (s1 & 0xffffff)); +#endif + dst += 12; + w -= 4; + } + while (w--) { + pixel = READ(src++); + Put24(dst, pixel); + dst += 3; + } +} + +void +shadowUpdate32to24(ScreenPtr pScreen, shadowBufPtr pBuf) +{ + RegionPtr damage = shadowDamage(pBuf); + PixmapPtr pShadow = pBuf->pPixmap; + int nbox = RegionNumRects(damage); + BoxPtr pbox = RegionRects(damage); + FbStride shaStride; + int shaBpp; + _X_UNUSED int shaXoff, shaYoff; + int x, y, w, h; + CARD32 winSize; + FbBits *shaBase, *shaLine; + CARD8 *winBase = NULL, *winLine; + + fbGetDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, + shaYoff); + + /* just get the initial window base + stride */ + winBase = (*pBuf->window)(pScreen, 0, 0, SHADOW_WINDOW_WRITE, + &winSize, pBuf->closure); + + while (nbox--) { + x = pbox->x1; + y = pbox->y1; + w = pbox->x2 - pbox->x1; + h = pbox->y2 - pbox->y1; + + winLine = winBase + y * winSize + (x * 3); + shaLine = shaBase + y * shaStride + ((x * shaBpp) >> FB_SHIFT); + + while (h--) { + sh24_32BltLine((CARD8 *)shaLine, (CARD8 *)winLine, w); + winLine += winSize; + shaLine += shaStride; + } + pbox++; + } +} diff --git a/miext/shadow/shadow.h b/miext/shadow/shadow.h index 7f22169dc..0bbbe45b6 100644 --- a/miext/shadow/shadow.h +++ b/miext/shadow/shadow.h @@ -156,6 +156,9 @@ extern _X_EXPORT void extern _X_EXPORT void shadowUpdateRotate32(ScreenPtr pScreen, shadowBufPtr pBuf); +extern _X_EXPORT void + shadowUpdate32to24(ScreenPtr pScreen, shadowBufPtr pBuf); + typedef void (*shadowUpdateProc) (ScreenPtr, shadowBufPtr); extern _X_EXPORT shadowUpdateProc shadowUpdatePackedWeak(void); |