diff options
Diffstat (limited to 'miext')
| -rw-r--r-- | miext/shadow/Makefile.am | 1 | ||||
| -rw-r--r-- | miext/shadow/shadow.h | 3 | ||||
| -rw-r--r-- | miext/shadow/shafb4.c | 139 |
3 files changed, 143 insertions, 0 deletions
diff --git a/miext/shadow/Makefile.am b/miext/shadow/Makefile.am index 882463e58..d2142ad6d 100644 --- a/miext/shadow/Makefile.am +++ b/miext/shadow/Makefile.am @@ -9,6 +9,7 @@ endif libshadow_la_SOURCES = \ shadow.c \ shadow.h \ + shafb4.c \ shalloc.c \ shiplan2p4.c \ shiplan2p8.c \ diff --git a/miext/shadow/shadow.h b/miext/shadow/shadow.h index e190cd48f..f9ea6c45e 100644 --- a/miext/shadow/shadow.h +++ b/miext/shadow/shadow.h @@ -96,6 +96,9 @@ shadowInit(ScreenPtr pScreen, ShadowUpdateProc update, ShadowWindowProc window); extern _X_EXPORT void *shadowAlloc(int width, int height, int bpp); extern _X_EXPORT void + shadowUpdateAfb4(ScreenPtr pScreen, shadowBufPtr pBuf); + +extern _X_EXPORT void shadowUpdateIplan2p4(ScreenPtr pScreen, shadowBufPtr pBuf); extern _X_EXPORT void diff --git a/miext/shadow/shafb4.c b/miext/shadow/shafb4.c new file mode 100644 index 000000000..07249323a --- /dev/null +++ b/miext/shadow/shafb4.c @@ -0,0 +1,139 @@ +/* + * + * Copyright © 2013 Geert Uytterhoeven + * + * 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 Geert Uytterhoeven not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Geert Uytterhoeven makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * GEERT UYTTERHOEVEN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL GEERT UYTTERHOEVEN 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. + * + * Based on shpacked.c, which is Copyright © 2000 Keith Packard + */ + +#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" +#include "c2p_core.h" + + + /* + * Perform a full C2P step on 32 4-bit pixels, stored in 4 32-bit words + * containing + * - 32 4-bit chunky pixels on input + * - permutated planar data (1 plane per 32-bit word) on output + */ + +static void c2p_32x4(CARD32 d[4]) +{ + transp4(d, 16, 2); + transp4(d, 8, 1); + transp4(d, 4, 2); + transp4(d, 2, 1); + transp4(d, 1, 2); +} + + + /* + * Store a full block of permutated planar data after c2p conversion + */ + +static inline void store_afb4(void *dst, unsigned int stride, + const CARD32 d[4]) +{ + CARD8 *p = dst; + + *(CARD32 *)p = d[3]; p += stride; + *(CARD32 *)p = d[1]; p += stride; + *(CARD32 *)p = d[2]; p += stride; + *(CARD32 *)p = d[0]; p += stride; +} + + +void +shadowUpdateAfb4(ScreenPtr pScreen, shadowBufPtr pBuf) +{ + RegionPtr damage = shadowDamage(pBuf); + PixmapPtr pShadow = pBuf->pPixmap; + int nbox = RegionNumRects(damage); + BoxPtr pbox = RegionRects(damage); + FbBits *shaBase; + CARD32 *shaLine, *sha; + FbStride shaStride; + int scrLine; + _X_UNUSED int shaBpp, shaXoff, shaYoff; + int x, y, w, h; + int i, n; + CARD32 *win; + CARD32 off, winStride; + union { + CARD8 bytes[16]; + CARD32 words[4]; + } d; + + fbGetDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, + shaYoff); + if (sizeof(FbBits) != sizeof(CARD32)) + shaStride = shaStride * sizeof(FbBits) / sizeof(CARD32); + + while (nbox--) { + x = pbox->x1; + y = pbox->y1; + w = pbox->x2 - pbox->x1; + h = pbox->y2 - pbox->y1; + + scrLine = (x & -32) / 2; + shaLine = (CARD32 *)shaBase + y * shaStride + scrLine / sizeof(CARD32); + + off = scrLine / 4; /* byte offset in bitplane scanline */ + n = ((x & 31) + w + 31) / 32; /* number of c2p units in scanline */ + + while (h--) { + sha = shaLine; + win = (CARD32 *) (*pBuf->window) (pScreen, + y, + off, + SHADOW_WINDOW_WRITE, + &winStride, + pBuf->closure); + if (!win) + return; + for (i = 0; i < n; i++) { + memcpy(d.bytes, sha, sizeof(d.bytes)); + c2p_32x4(d.words); + store_afb4(win++, winStride, d.words); + sha += sizeof(d.bytes) / sizeof(*sha); + } + shaLine += shaStride; + y++; + } + pbox++; + } +} |