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Diffstat (limited to 'fb/fbsolid.c')
| -rw-r--r-- | fb/fbsolid.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/fb/fbsolid.c b/fb/fbsolid.c new file mode 100644 index 000000000..17b5bffe0 --- /dev/null +++ b/fb/fbsolid.c @@ -0,0 +1,212 @@ +/* + * $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 |