a4005c15fb
Create fbPrepareAccess macros to call into the driver to set up the wfbReadMemory and wfbWriteWemory pointers. Call these from fbGetDrawable and fbGetStipDrawable. Add the READ and WRITE macros, which expand to simple memory accesses for fb, and calls through the function pointers for wfb. Add fbFinishAccess macro to give the driver an opportunity to clean up. Add calls to this in the appropriate places.
322 lines
7.8 KiB
C
322 lines
7.8 KiB
C
/*
|
|
* Id: fbgc.c,v 1.1 1999/11/02 03:54:45 keithp Exp $
|
|
*
|
|
* Copyright © 1998 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 <stdlib.h>
|
|
|
|
#include "fb.h"
|
|
|
|
const GCFuncs fbGCFuncs = {
|
|
fbValidateGC,
|
|
miChangeGC,
|
|
miCopyGC,
|
|
miDestroyGC,
|
|
miChangeClip,
|
|
miDestroyClip,
|
|
miCopyClip,
|
|
};
|
|
|
|
const GCOps fbGCOps = {
|
|
fbFillSpans,
|
|
fbSetSpans,
|
|
fbPutImage,
|
|
fbCopyArea,
|
|
fbCopyPlane,
|
|
fbPolyPoint,
|
|
fbPolyLine,
|
|
fbPolySegment,
|
|
fbPolyRectangle,
|
|
fbPolyArc,
|
|
miFillPolygon,
|
|
fbPolyFillRect,
|
|
fbPolyFillArc,
|
|
miPolyText8,
|
|
miPolyText16,
|
|
miImageText8,
|
|
miImageText16,
|
|
fbImageGlyphBlt,
|
|
fbPolyGlyphBlt,
|
|
fbPushPixels
|
|
};
|
|
|
|
Bool
|
|
fbCreateGC(GCPtr pGC)
|
|
{
|
|
pGC->clientClip = NULL;
|
|
pGC->clientClipType = CT_NONE;
|
|
|
|
pGC->ops = (GCOps *) &fbGCOps;
|
|
pGC->funcs = (GCFuncs *) &fbGCFuncs;
|
|
|
|
/* fb wants to translate before scan conversion */
|
|
pGC->miTranslate = 1;
|
|
|
|
fbGetRotatedPixmap(pGC) = 0;
|
|
fbGetExpose(pGC) = 1;
|
|
fbGetFreeCompClip(pGC) = 0;
|
|
fbGetCompositeClip(pGC) = 0;
|
|
fbGetGCPrivate(pGC)->bpp = BitsPerPixel (pGC->depth);
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Pad pixmap to FB_UNIT bits wide
|
|
*/
|
|
void
|
|
fbPadPixmap (PixmapPtr pPixmap)
|
|
{
|
|
int width;
|
|
FbBits *bits;
|
|
FbBits b;
|
|
FbBits mask;
|
|
int height;
|
|
int w;
|
|
int stride;
|
|
int bpp;
|
|
int xOff, yOff;
|
|
|
|
fbGetDrawable (&pPixmap->drawable, bits, stride, bpp, xOff, yOff);
|
|
|
|
width = pPixmap->drawable.width * pPixmap->drawable.bitsPerPixel;
|
|
height = pPixmap->drawable.height;
|
|
mask = FbBitsMask (0, width);
|
|
while (height--)
|
|
{
|
|
b = *bits & mask;
|
|
w = width;
|
|
while (w < FB_UNIT)
|
|
{
|
|
b = b | FbScrRight(b, w);
|
|
w <<= 1;
|
|
}
|
|
*bits = b;
|
|
bits += stride;
|
|
}
|
|
|
|
fbFinishAccess (&pPixmap->drawable);
|
|
}
|
|
|
|
/*
|
|
* Verify that 'bits' repeats every 'len' bits
|
|
*/
|
|
static Bool
|
|
fbBitsRepeat (FbBits bits, int len, int width)
|
|
{
|
|
FbBits mask = FbBitsMask(0, len);
|
|
FbBits orig = bits & mask;
|
|
int i;
|
|
|
|
if (width > FB_UNIT)
|
|
width = FB_UNIT;
|
|
for (i = 0; i < width / len; i++)
|
|
{
|
|
if ((bits & mask) != orig)
|
|
return FALSE;
|
|
bits = FbScrLeft(bits,len);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Check whether an entire bitmap line is a repetition of
|
|
* the first 'len' bits
|
|
*/
|
|
static Bool
|
|
fbLineRepeat (FbBits *bits, int len, int width)
|
|
{
|
|
FbBits first = bits[0];
|
|
|
|
if (!fbBitsRepeat (first, len, width))
|
|
return FALSE;
|
|
width = (width + FB_UNIT-1) >> FB_SHIFT;
|
|
bits++;
|
|
while (--width)
|
|
if (*bits != first)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* The even stipple code wants the first FB_UNIT/bpp bits on
|
|
* each scanline to represent the entire stipple
|
|
*/
|
|
static Bool
|
|
fbCanEvenStipple (PixmapPtr pStipple, int bpp)
|
|
{
|
|
int len = FB_UNIT / bpp;
|
|
FbBits *bits;
|
|
int stride;
|
|
int stip_bpp;
|
|
int stipXoff, stipYoff;
|
|
int h;
|
|
|
|
/* can't even stipple 24bpp drawables */
|
|
if ((bpp & (bpp-1)) != 0)
|
|
return FALSE;
|
|
/* make sure the stipple width is a multiple of the even stipple width */
|
|
if (pStipple->drawable.width % len != 0)
|
|
return FALSE;
|
|
fbGetDrawable (&pStipple->drawable, bits, stride, stip_bpp, stipXoff, stipYoff);
|
|
h = pStipple->drawable.height;
|
|
/* check to see that the stipple repeats horizontally */
|
|
while (h--)
|
|
{
|
|
if (!fbLineRepeat (bits, len, pStipple->drawable.width)) {
|
|
fbFinishAccess (&pStipple->drawable);
|
|
return FALSE;
|
|
}
|
|
bits += stride;
|
|
}
|
|
fbFinishAccess (&pStipple->drawable);
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
fbValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable)
|
|
{
|
|
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
|
|
FbBits mask;
|
|
|
|
pGC->lastWinOrg.x = pDrawable->x;
|
|
pGC->lastWinOrg.y = pDrawable->y;
|
|
|
|
/*
|
|
* if the client clip is different or moved OR the subwindowMode has
|
|
* changed OR the window's clip has changed since the last validation
|
|
* we need to recompute the composite clip
|
|
*/
|
|
|
|
if ((changes & (GCClipXOrigin|GCClipYOrigin|GCClipMask|GCSubwindowMode)) ||
|
|
(pDrawable->serialNumber != (pGC->serialNumber & DRAWABLE_SERIAL_BITS))
|
|
)
|
|
{
|
|
miComputeCompositeClip (pGC, pDrawable);
|
|
pPriv->oneRect = REGION_NUM_RECTS(fbGetCompositeClip(pGC)) == 1;
|
|
}
|
|
|
|
#ifdef FB_24_32BIT
|
|
if (pPriv->bpp != pDrawable->bitsPerPixel)
|
|
{
|
|
changes |= GCStipple|GCForeground|GCBackground|GCPlaneMask;
|
|
pPriv->bpp = pDrawable->bitsPerPixel;
|
|
}
|
|
if ((changes & GCTile) && fbGetRotatedPixmap(pGC))
|
|
{
|
|
(*pGC->pScreen->DestroyPixmap) (fbGetRotatedPixmap(pGC));
|
|
fbGetRotatedPixmap(pGC) = 0;
|
|
}
|
|
|
|
if (pGC->fillStyle == FillTiled)
|
|
{
|
|
PixmapPtr pOldTile, pNewTile;
|
|
|
|
pOldTile = pGC->tile.pixmap;
|
|
if (pOldTile->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
|
|
{
|
|
pNewTile = fbGetRotatedPixmap(pGC);
|
|
if (!pNewTile || pNewTile ->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
|
|
{
|
|
if (pNewTile)
|
|
(*pGC->pScreen->DestroyPixmap) (pNewTile);
|
|
pNewTile = fb24_32ReformatTile (pOldTile, pDrawable->bitsPerPixel);
|
|
}
|
|
if (pNewTile)
|
|
{
|
|
fbGetRotatedPixmap(pGC) = pOldTile;
|
|
pGC->tile.pixmap = pNewTile;
|
|
changes |= GCTile;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
if (changes & GCTile)
|
|
{
|
|
if (!pGC->tileIsPixel &&
|
|
FbEvenTile (pGC->tile.pixmap->drawable.width *
|
|
pDrawable->bitsPerPixel))
|
|
fbPadPixmap (pGC->tile.pixmap);
|
|
}
|
|
if (changes & GCStipple)
|
|
{
|
|
pPriv->evenStipple = FALSE;
|
|
|
|
if (pGC->stipple) {
|
|
|
|
/* can we do an even stipple ?? */
|
|
if (FbEvenStip (pGC->stipple->drawable.width,
|
|
pDrawable->bitsPerPixel) &&
|
|
(fbCanEvenStipple (pGC->stipple, pDrawable->bitsPerPixel)))
|
|
pPriv->evenStipple = TRUE;
|
|
|
|
if (pGC->stipple->drawable.width * pDrawable->bitsPerPixel < FB_UNIT)
|
|
fbPadPixmap (pGC->stipple);
|
|
}
|
|
}
|
|
/*
|
|
* Recompute reduced rop values
|
|
*/
|
|
if (changes & (GCForeground|GCBackground|GCPlaneMask|GCFunction))
|
|
{
|
|
int s;
|
|
FbBits depthMask;
|
|
|
|
mask = FbFullMask(pDrawable->bitsPerPixel);
|
|
depthMask = FbFullMask(pDrawable->depth);
|
|
|
|
pPriv->fg = pGC->fgPixel & mask;
|
|
pPriv->bg = pGC->bgPixel & mask;
|
|
|
|
if ((pGC->planemask & depthMask) == depthMask)
|
|
pPriv->pm = mask;
|
|
else
|
|
pPriv->pm = pGC->planemask & mask;
|
|
|
|
s = pDrawable->bitsPerPixel;
|
|
while (s < FB_UNIT)
|
|
{
|
|
pPriv->fg |= pPriv->fg << s;
|
|
pPriv->bg |= pPriv->bg << s;
|
|
pPriv->pm |= pPriv->pm << s;
|
|
s <<= 1;
|
|
}
|
|
pPriv->and = fbAnd(pGC->alu, pPriv->fg, pPriv->pm);
|
|
pPriv->xor = fbXor(pGC->alu, pPriv->fg, pPriv->pm);
|
|
pPriv->bgand = fbAnd(pGC->alu, pPriv->bg, pPriv->pm);
|
|
pPriv->bgxor = fbXor(pGC->alu, pPriv->bg, pPriv->pm);
|
|
}
|
|
if (changes & GCDashList)
|
|
{
|
|
unsigned short n = pGC->numInDashList;
|
|
unsigned char *dash = pGC->dash;
|
|
unsigned int dashLength = 0;
|
|
|
|
while (n--)
|
|
dashLength += (unsigned int ) *dash++;
|
|
pPriv->dashLength = dashLength;
|
|
}
|
|
}
|