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/*
* $Id: fbgc.c,v 1.1.1.1 2000/01/06 12:56:53 faith 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.
*/
/* $XFree86: xc/programs/Xserver/fb/fbgc.c,v 1.2 1999/12/30 02:33:58 robin Exp $ */
#include "fb.h"
const GCFuncs fbGCFuncs = {
fbValidateGC,
miChangeGC,
miCopyGC,
miDestroyGC,
miChangeClip,
miDestroyClip,
miCopyClip,
};
const GCOps fbGCOps = {
fbFillSpans,
fbSetSpans,
fbPutImage,
fbCopyArea,
fbCopyPlane,
fbPolyPoint,
fbPolyLine,
miPolySegment,
miPolyRectangle,
fbPolyArc,
miFillPolygon,
fbPolyFillRect,
miPolyFillArc,
miPolyText8,
miPolyText16,
miImageText8,
miImageText16,
fbImageGlyphBlt,
fbPolyGlyphBlt,
fbPushPixels
#ifdef NEED_LINEHELPER
,NULL
#endif
};
Bool
fbCreateGC(GCPtr pGC)
{
FbGCPrivPtr pPriv;
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;
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;
width = pPixmap->drawable.width * pPixmap->drawable.bitsPerPixel;
bits = pPixmap->devPrivate.ptr;
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;
}
}
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;
}
if (changes & GCTile)
{
if (!pGC->tileIsPixel &&
FbEvenTile (pGC->tile.pixmap->drawable.width *
pDrawable->bitsPerPixel))
fbPadPixmap (pGC->tile.pixmap);
}
if (changes & GCStipple)
{
if (pGC->stipple &&
FbEvenStip (pGC->stipple->drawable.width,
pDrawable->bitsPerPixel))
fbPadPixmap (pGC->stipple);
}
/*
* Recompute reduced rop values
*/
if (changes & (GCForeground|GCBackground|GCPlaneMask|GCFunction))
{
int n;
int s;
FbBits depthMask;
mask = FbFullMask(pDrawable->bitsPerPixel);
depthMask = FbFullMask(pDrawable->depth);
if ((pGC->planemask & depthMask) == depthMask)
pGC->planemask = mask;
pPriv->fg = pGC->fgPixel & mask;
pPriv->bg = pGC->bgPixel & mask;
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;
}
}
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