144 lines
4.4 KiB
C
144 lines
4.4 KiB
C
|
/*
|
||
|
*
|
||
|
* 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 8-bit pixels, stored in 8 32-bit words
|
||
|
* containing
|
||
|
* - 32 8-bit chunky pixels on input
|
||
|
* - permutated planar data (1 plane per 32-bit word) on output
|
||
|
*/
|
||
|
|
||
|
static void c2p_32x8(CARD32 d[8])
|
||
|
{
|
||
|
transp8(d, 16, 4);
|
||
|
transp8(d, 8, 2);
|
||
|
transp8(d, 4, 1);
|
||
|
transp8(d, 2, 4);
|
||
|
transp8(d, 1, 2);
|
||
|
}
|
||
|
|
||
|
|
||
|
/*
|
||
|
* Store a full block of permutated planar data after c2p conversion
|
||
|
*/
|
||
|
|
||
|
static inline void store_afb8(void *dst, unsigned int stride,
|
||
|
const CARD32 d[8])
|
||
|
{
|
||
|
CARD8 *p = dst;
|
||
|
|
||
|
*(CARD32 *)p = d[7]; p += stride;
|
||
|
*(CARD32 *)p = d[5]; p += stride;
|
||
|
*(CARD32 *)p = d[3]; p += stride;
|
||
|
*(CARD32 *)p = d[1]; p += stride;
|
||
|
*(CARD32 *)p = d[6]; p += stride;
|
||
|
*(CARD32 *)p = d[4]; p += stride;
|
||
|
*(CARD32 *)p = d[2]; p += stride;
|
||
|
*(CARD32 *)p = d[0]; p += stride;
|
||
|
}
|
||
|
|
||
|
|
||
|
void
|
||
|
shadowUpdateAfb8(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[32];
|
||
|
CARD32 words[8];
|
||
|
} 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;
|
||
|
shaLine = (CARD32 *)shaBase + y * shaStride + scrLine / sizeof(CARD32);
|
||
|
|
||
|
off = scrLine / 8; /* 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_32x8(d.words);
|
||
|
store_afb8(win++, winStride, d.words);
|
||
|
sha += sizeof(d.bytes) / sizeof(*sha);
|
||
|
}
|
||
|
shaLine += shaStride;
|
||
|
y++;
|
||
|
}
|
||
|
pbox++;
|
||
|
}
|
||
|
}
|