frederik
/
xserver
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
xserver/fb/fb24_32.c

628 lines
13 KiB
C
Raw Blame History

/*
* $XFree86: xc/programs/Xserver/fb/fb24_32.c,v 1.4 2000/08/09 17:50:51 keithp Exp $
*
* Copyright © 2000 SuSE, Inc.
*
* 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 SuSE not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. SuSE makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
* 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.
*
* Author: Keith Packard, SuSE, Inc.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#ifdef XFree86LOADER
#include "xf86.h"
#include "xf86_ansic.h"
#endif
#include "fb.h"
/* X apps don't like 24bpp images, this code exposes 32bpp images */
/*
* These two functions do a full CopyArea while reformatting
* the data between 24 and 32bpp. They try to go a bit faster
* by reading/writing aligned CARD32s where it's easy
*/
#define Get8(a) ((CARD32) *(a))
#if BITMAP_BIT_ORDER == MSBFirst
#define Get24(a) ((Get8(a) << 16) | (Get8((a)+1) << 8) | Get8((a)+2))
#define Put24(a,p) (((a)[0] = (CARD8) ((p) >> 16)), \
((a)[1] = (CARD8) ((p) >> 8)), \
((a)[2] = (CARD8) (p)))
#else
#define Get24(a) (Get8(a) | (Get8((a)+1) << 8) | (Get8((a)+2)<<16))
#define Put24(a,p) (((a)[0] = (CARD8) (p)), \
((a)[1] = (CARD8) ((p) >> 8)), \
((a)[2] = (CARD8) ((p) >> 16)))
#endif
typedef void (*fb24_32BltFunc) (CARD8 *srcLine,
FbStride srcStride,
int srcX,
CARD8 *dstLine,
FbStride dstStride,
int dstX,
int width,
int height,
int alu,
FbBits pm);
static void
fb24_32BltDown (CARD8 *srcLine,
FbStride srcStride,
int srcX,
CARD8 *dstLine,
FbStride dstStride,
int dstX,
int width,
int height,
int alu,
FbBits pm)
{
CARD32 *src;
CARD8 *dst;
int w;
Bool destInvarient;
CARD32 pixel, dpixel;
FbDeclareMergeRop ();
srcLine += srcX * 4;
dstLine += dstX * 3;
FbInitializeMergeRop(alu, (pm | ~(FbBits) 0xffffff));
destInvarient = FbDestInvarientMergeRop();
while (height--)
{
src = (CARD32 *) srcLine;
dst = dstLine;
srcLine += srcStride;
dstLine += dstStride;
w = width;
if (destInvarient)
{
while (((long) dst & 3) && w)
{
w--;
pixel = *src++;
pixel = FbDoDestInvarientMergeRop(pixel);
Put24 (dst, pixel);
dst += 3;
}
/* Do four aligned pixels at a time */
while (w >= 4)
{
CARD32 s0, s1;
s0 = *src++;
s0 = FbDoDestInvarientMergeRop(s0);
s1 = *src++;
s1 = FbDoDestInvarientMergeRop(s1);
#if BITMAP_BIT_ORDER == LSBFirst
*(CARD32 *)(dst) = (s0 & 0xffffff) | (s1 << 24);
#else
*(CARD32 *)(dst) = (s0 << 8) | ((s1 & 0xffffff) >> 16);
#endif
s0 = *src++;
s0 = FbDoDestInvarientMergeRop(s0);
#if BITMAP_BIT_ORDER == LSBFirst
*(CARD32 *)(dst+4) = ((s1 & 0xffffff) >> 8) | (s0 << 16);
#else
*(CARD32 *)(dst+4) = (s1 << 16) | ((s0 & 0xffffff) >> 8);
#endif
s1 = *src++;
s1 = FbDoDestInvarientMergeRop(s1);
#if BITMAP_BIT_ORDER == LSBFirst
*(CARD32 *)(dst+8) = ((s0 & 0xffffff) >> 16) | (s1 << 8);
#else
*(CARD32 *)(dst+8) = (s0 << 24) | (s1 & 0xffffff);
#endif
dst += 12;
w -= 4;
}
while (w--)
{
pixel = *src++;
pixel = FbDoDestInvarientMergeRop(pixel);
Put24 (dst, pixel);
dst += 3;
}
}
else
{
while (w--)
{
pixel = *src++;
dpixel = Get24 (dst);
pixel = FbDoMergeRop(pixel, dpixel);
Put24 (dst, pixel);
dst += 3;
}
}
}
}
static void
fb24_32BltUp (CARD8 *srcLine,
FbStride srcStride,
int srcX,
CARD8 *dstLine,
FbStride dstStride,
int dstX,
int width,
int height,
int alu,
FbBits pm)
{
CARD8 *src;
CARD32 *dst;
int w;
Bool destInvarient;
CARD32 pixel;
FbDeclareMergeRop ();
FbInitializeMergeRop(alu, (pm | (~(FbBits) 0xffffff)));
destInvarient = FbDestInvarientMergeRop();
srcLine += srcX * 3;
dstLine += dstX * 4;
while (height--)
{
w = width;
src = srcLine;
dst = (CARD32 *) dstLine;
srcLine += srcStride;
dstLine += dstStride;
if (destInvarient)
{
while (((long) src & 3) && w)
{
w--;
pixel = Get24(src);
src += 3;
*dst++ = FbDoDestInvarientMergeRop(pixel);
}
/* Do four aligned pixels at a time */
while (w >= 4)
{
CARD32 s0, s1;
s0 = *(CARD32 *)(src);
#if BITMAP_BIT_ORDER == LSBFirst
pixel = s0 & 0xffffff;
#else
pixel = s0 >> 8;
#endif
*dst++ = FbDoDestInvarientMergeRop(pixel);
s1 = *(CARD32 *)(src+4);
#if BITMAP_BIT_ORDER == LSBFirst
pixel = (s0 >> 24) | ((s1 << 8) & 0xffffff);
#else
pixel = ((s0 << 16) & 0xffffff) | (s1 >> 16);
#endif
*dst++ = FbDoDestInvarientMergeRop(pixel);
s0 = *(CARD32 *)(src+8);
#if BITMAP_BIT_ORDER == LSBFirst
pixel = (s1 >> 16) | ((s0 << 16) & 0xffffff);
#else
pixel = ((s1 << 8) & 0xffffff) | (s0 >> 24);
#endif
*dst++ = FbDoDestInvarientMergeRop(pixel);
#if BITMAP_BIT_ORDER == LSBFirst
pixel = s0 >> 8;
#else
pixel = s0 & 0xffffff;
#endif
*dst++ = FbDoDestInvarientMergeRop(pixel);
src += 12;
w -= 4;
}
while (w)
{
w--;
pixel = Get24(src);
src += 3;
*dst++ = FbDoDestInvarientMergeRop(pixel);
}
}
else
{
while (w--)
{
pixel = Get24(src);
src += 3;
*dst = FbDoMergeRop(pixel, *dst);
dst++;
}
}
}
}
/*
* Spans functions; probably unused.
*/
void
fb24_32GetSpans(DrawablePtr pDrawable,
int wMax,
DDXPointPtr ppt,
int *pwidth,
int nspans,
char *pchardstStart)
{
FbBits *srcBits;
CARD8 *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
CARD8 *dst;
fbGetDrawable (pDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
src = (CARD8 *) srcBits;
srcStride *= sizeof (FbBits);
while (nspans--)
{
dst = (CARD8 *) pchardstStart;
fb24_32BltUp (src + (ppt->y + srcYoff) * srcStride, srcStride,
ppt->x + srcXoff,
dst,
1,
0,
*pwidth,
1,
GXcopy,
FB_ALLONES);
pchardstStart += PixmapBytePad(*pwidth, pDrawable->depth);
ppt++;
pwidth++;
}
}
void
fb24_32SetSpans (DrawablePtr pDrawable,
GCPtr pGC,
char *src,
DDXPointPtr ppt,
int *pwidth,
int nspans,
int fSorted)
{
FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
RegionPtr pClip = fbGetCompositeClip(pGC);
FbBits *dstBits;
CARD8 *dst, *d, *s;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
BoxPtr pbox;
int n;
int x1, x2;
fbGetDrawable (pDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
dst = (CARD8 *) dstBits;
dstStride *= sizeof (FbBits);
while (nspans--)
{
d = dst + (ppt->y + dstYoff) * dstStride;
s = (CARD8 *) src;
n = REGION_NUM_RECTS(pClip);
pbox = REGION_RECTS (pClip);
while (n--)
{
if (pbox->y1 > ppt->y)
break;
if (pbox->y2 > ppt->y)
{
x1 = ppt->x;
x2 = x1 + *pwidth;
if (pbox->x1 > x1)
x1 = pbox->x1;
if (pbox->x2 < x2)
x2 = pbox->x2;
if (x1 < x2)
fb24_32BltDown (s,
0,
(x1 - ppt->x),
d,
dstStride,
x1 + dstXoff,
(x2 - x1),
1,
pGC->alu,
pPriv->pm);
}
}
src += PixmapBytePad (*pwidth, pDrawable->depth);
ppt++;
pwidth++;
}
}
/*
* Clip and put 32bpp Z-format images to a 24bpp drawable
*/
void
fb24_32PutZImage (DrawablePtr pDrawable,
RegionPtr pClip,
int alu,
FbBits pm,
int x,
int y,
int width,
int height,
CARD8 *src,
FbStride srcStride)
{
FbBits *dstBits;
CARD8 *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
int nbox;
BoxPtr pbox;
int x1, y1, x2, y2;
fbGetDrawable (pDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
dstStride *= sizeof(FbBits);
dst = (CARD8 *) dstBits;
for (nbox = REGION_NUM_RECTS (pClip),
pbox = REGION_RECTS(pClip);
nbox--;
pbox++)
{
x1 = x;
y1 = y;
x2 = x + width;
y2 = y + height;
if (x1 < pbox->x1)
x1 = pbox->x1;
if (y1 < pbox->y1)
y1 = pbox->y1;
if (x2 > pbox->x2)
x2 = pbox->x2;
if (y2 > pbox->y2)
y2 = pbox->y2;
if (x1 >= x2 || y1 >= y2)
continue;
fb24_32BltDown (src + (y1 - y) * srcStride,
srcStride,
(x1 - x),
dst + (y1 + dstYoff) * dstStride,
dstStride,
x1 + dstXoff,
(x2 - x1),
(y2 - y1),
alu,
pm);
}
}
void
fb24_32GetImage (DrawablePtr pDrawable,
int x,
int y,
int w,
int h,
unsigned int format,
unsigned long planeMask,
char *d)
{
FbBits *srcBits;
CARD8 *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
FbStride dstStride;
FbBits pm;
fbGetDrawable (pDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
src = (CARD8 *) srcBits;
srcStride *= sizeof (FbBits);
x += pDrawable->x;
y += pDrawable->y;
pm = fbReplicatePixel (planeMask, 32);
dstStride = PixmapBytePad(w, pDrawable->depth);
if (pm != FB_ALLONES)
memset (d, 0, dstStride * h);
fb24_32BltUp (src + (y + srcYoff) * srcStride, srcStride, x + srcXoff,
(CARD8 *) d, dstStride, 0,
w, h, GXcopy, pm);
}
void
fb24_32CopyMtoN (DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
BoxPtr pbox,
int nbox,
int dx,
int dy,
Bool reverse,
Bool upsidedown,
Pixel bitplane,
void *closure)
{
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
FbBits *srcBits;
CARD8 *src;
FbStride srcStride;
int srcBpp;
FbBits *dstBits;
CARD8 *dst;
FbStride dstStride;
int dstBpp;
fb24_32BltFunc blt;
int srcXoff, srcYoff;
int dstXoff, dstYoff;
fbGetDrawable (pSrcDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
src = (CARD8 *) srcBits;
srcStride *= sizeof (FbBits);
fbGetDrawable (pDstDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
dst = (CARD8 *) dstBits;
dstStride *= sizeof (FbBits);
if (srcBpp == 24)
blt = fb24_32BltUp;
else
blt = fb24_32BltDown;
while (nbox--)
{
(*blt) (src + (pbox->y1 + dy + srcYoff) * srcStride,
srcStride,
(pbox->x1 + dx + srcXoff),
dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff),
(pbox->x2 - pbox->x1),
(pbox->y2 - pbox->y1),
pGC->alu,
pPriv->pm);
pbox++;
}
}
PixmapPtr
fb24_32ReformatTile(PixmapPtr pOldTile, int bitsPerPixel)
{
ScreenPtr pScreen = pOldTile->drawable.pScreen;
PixmapPtr pNewTile;
FbBits *old, *new;
FbStride oldStride, newStride;
int oldBpp, newBpp;
fb24_32BltFunc blt;
int oldXoff, oldYoff;
int newXoff, newYoff;
pNewTile = fbCreatePixmapBpp (pScreen,
pOldTile->drawable.width,
pOldTile->drawable.height,
pOldTile->drawable.depth,
bitsPerPixel);
if (!pNewTile)
return 0;
fbGetDrawable (&pOldTile->drawable,
old, oldStride, oldBpp, oldXoff, oldYoff);
fbGetDrawable (&pNewTile->drawable,
new, newStride, newBpp, newXoff, newYoff);
if (oldBpp == 24)
blt = fb24_32BltUp;
else
blt = fb24_32BltDown;
(*blt) ((CARD8 *) old,
oldStride * sizeof (FbBits),
0,
(CARD8 *) new,
newStride * sizeof (FbBits),
0,
pOldTile->drawable.width,
pOldTile->drawable.height,
GXcopy,
FB_ALLONES);
return pNewTile;
}
typedef struct {
pointer pbits;
int width;
} miScreenInitParmsRec, *miScreenInitParmsPtr;
Bool
fb24_32CreateScreenResources(ScreenPtr pScreen)
{
miScreenInitParmsPtr pScrInitParms;
int pitch;
Bool retval;
/* get the pitch before mi destroys it */
pScrInitParms = (miScreenInitParmsPtr)pScreen->devPrivate;
pitch = BitmapBytePad(pScrInitParms->width * 24);
if((retval = miCreateScreenResources(pScreen))) {
/* fix the screen pixmap */
PixmapPtr pPix = (PixmapPtr)pScreen->devPrivate;
pPix->drawable.bitsPerPixel = 24;
pPix->devKind = pitch;
}
return retval;
}
Bool
fb24_32ModifyPixmapHeader (PixmapPtr pPixmap,
int width,
int height,
int depth,
int bitsPerPixel,
int devKind,
pointer pPixData)
{
int bpp, w;
if (!pPixmap)
return FALSE;
bpp = bitsPerPixel;
if (bpp <= 0)
bpp = pPixmap->drawable.bitsPerPixel;
if (bpp == 24)
{
if (devKind < 0)
{
w = width;
if (w <= 0)
w = pPixmap->drawable.width;
devKind = BitmapBytePad(w * 24);
}
}
return miModifyPixmapHeader(pPixmap, width, height, depth, bitsPerPixel,
devKind, pPixData);
}
Reference in New Issue View Git Blame Copy Permalink