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/*
* $XFree86: xc/programs/Xserver/fb/fbsolid.c,v 1.8 2001/10/28 03:33:08 tsi 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.
*/
#define FbSelectPart(xor,o,t) xor
#include "fb.h"
void
fbSolid (FbBits *dst,
FbStride dstStride,
int dstX,
int bpp,
int width,
int height,
FbBits and,
FbBits xor)
{
FbBits startmask, endmask;
int n, nmiddle;
int startbyte, endbyte;
#ifdef FB_24BIT
if (bpp == 24 && (!FbCheck24Pix(and) || !FbCheck24Pix(xor)))
{
fbSolid24 (dst, dstStride, dstX, width, height, and, xor);
return;
}
#endif
dst += dstX >> FB_SHIFT;
dstX &= FB_MASK;
FbMaskBitsBytes(dstX, width, and == 0, startmask, startbyte,
nmiddle, endmask, endbyte);
if (startmask)
dstStride--;
dstStride -= nmiddle;
while (height--)
{
if (startmask)
{
FbDoLeftMaskByteRRop(dst,startbyte,startmask,and,xor);
dst++;
}
n = nmiddle;
if (!and)
while (n--)
*dst++ = xor;
else
while (n--)
{
*dst = FbDoRRop (*dst, and, xor);
dst++;
}
if (endmask)
FbDoRightMaskByteRRop(dst,endbyte,endmask,and,xor);
dst += dstStride;
}
}
#ifdef FB_24BIT
void
fbSolid24 (FbBits *dst,
FbStride dstStride,
int dstX,
int width,
int height,
FbBits and,
FbBits xor)
{
FbBits startmask, endmask;
FbBits xor0 = 0, xor1 = 0, xor2 = 0;
FbBits and0 = 0, and1 = 0, and2 = 0;
FbBits xorS = 0, andS = 0, xorE = 0, andE = 0;
int n, nmiddle;
int rotS, rot;
dst += dstX >> FB_SHIFT;
dstX &= FB_MASK;
/*
* Rotate pixel values this far across the word to align on
* screen pixel boundaries
*/
rot = FbFirst24Rot (dstX);
FbMaskBits (dstX, width, startmask, nmiddle, endmask);
if (startmask)
dstStride--;
dstStride -= nmiddle;
/*
* Precompute rotated versions of the rasterop values
*/
rotS = rot;
xor = FbRot24(xor,rotS);
and = FbRot24(and,rotS);
if (startmask)
{
xorS = xor;
andS = and;
xor = FbNext24Pix(xor);
and = FbNext24Pix(and);
}
if (nmiddle)
{
xor0 = xor;
and0 = and;
xor1 = FbNext24Pix(xor0);
and1 = FbNext24Pix(and0);
xor2 = FbNext24Pix(xor1);
and2 = FbNext24Pix(and1);
}
if (endmask)
{
switch (nmiddle % 3) {
case 0:
xorE = xor;
andE = and;
break;
case 1:
xorE = xor1;
andE = and1;
break;
case 2:
xorE = xor2;
andE = and2;
break;
}
}
while (height--)
{
if (startmask)
{
*dst = FbDoMaskRRop(*dst, andS, xorS, startmask);
dst++;
}
n = nmiddle;
if (!and0)
{
while (n >= 3)
{
*dst++ = xor0;
*dst++ = xor1;
*dst++ = xor2;
n -= 3;
}
if (n)
{
*dst++ = xor0;
n--;
if (n)
{
*dst++ = xor1;
}
}
}
else
{
while (n >= 3)
{
*dst = FbDoRRop (*dst, and0, xor0);
dst++;
*dst = FbDoRRop (*dst, and1, xor1);
dst++;
*dst = FbDoRRop (*dst, and2, xor2);
dst++;
n -= 3;
}
if (n)
{
*dst = FbDoRRop (*dst, and0, xor0);
dst++;
n--;
if (n)
{
*dst = FbDoRRop (*dst, and1, xor1);
dst++;
}
}
}
if (endmask)
*dst = FbDoMaskRRop (*dst, andE, xorE, endmask);
dst += dstStride;
}
}
#endif
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