+++ /dev/null
-/*
- * $XConsortium: mfbply1rct.c /main/10 1996/08/23 10:35:13 dpw $
- *
-Copyright (c) 1990 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from the X Consortium.
- *
- * Author: Keith Packard, MIT X Consortium
- */
-
-#include "X.h"
-
-#include "gcstruct.h"
-#include "windowstr.h"
-#include "pixmapstr.h"
-#include "regionstr.h"
-#include "scrnintstr.h"
-#include "mistruct.h"
-
-#include "mfb.h"
-#include "maskbits.h"
-
-#if defined(mips) || defined(sparc)
-#define GetHighWord(x) (((int) (x)) >> 16)
-#else
-#define GetHighWord(x) (((int) (x)) / 65536)
-#endif
-
-#if IMAGE_BYTE_ORDER == MSBFirst
-#define intToCoord(i,x,y) (((x) = GetHighWord(i)), ((y) = (int) ((short) (i))))
-#define coordToInt(x,y) (((x) << 16) | (y))
-#define intToX(i) (GetHighWord(i))
-#define intToY(i) ((int) ((short) i))
-#else
-#define intToCoord(i,x,y) (((x) = (int) ((short) (i))), ((y) = GetHighWord(i)))
-#define coordToInt(x,y) (((y) << 16) | (x))
-#define intToX(i) ((int) ((short) (i)))
-#define intToY(i) (GetHighWord(i))
-#endif
-
-void
-MFBFILLPOLY1RECT (pDrawable, pGC, shape, mode, count, ptsIn)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int count;
- DDXPointPtr ptsIn;
-{
- mfbPrivGCPtr devPriv;
- int nlwidth;
- PixelType *addrl, *addr;
- int maxy;
- int origin;
- register int vertex1, vertex2;
- int c;
- BoxPtr extents;
- int clip;
- int y;
- int *vertex1p, *vertex2p;
- int *endp;
- int x1, x2;
- int dx1, dx2;
- int dy1, dy2;
- int e1, e2;
- int step1, step2;
- int sign1, sign2;
- int h;
- int l, r;
- PixelType mask, bits = ~((PixelType)0);
- int nmiddle;
-
- devPriv = (mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr);
- if (mode == CoordModePrevious || shape != Convex ||
- REGION_NUM_RECTS(devPriv->pCompositeClip) != 1)
- {
- miFillPolygon (pDrawable, pGC, shape, mode, count, ptsIn);
- return;
- }
- origin = *((int *) &pDrawable->x);
- vertex2 = origin - ((origin & 0x8000) << 1);
- extents = &devPriv->pCompositeClip->extents;
- vertex1 = *((int *) &extents->x1) - vertex2;
- vertex2 = *((int *) &extents->x2) - vertex2 - 0x00010001;
- clip = 0;
- y = 32767;
- maxy = 0;
- vertex2p = (int *) ptsIn;
- endp = vertex2p + count;
- while (count--)
- {
- c = *vertex2p;
- clip |= (c - vertex1) | (vertex2 - c);
- c = intToY(c);
- if (c < y)
- {
- y = c;
- vertex1p = vertex2p;
- }
- vertex2p++;
- if (c > maxy)
- maxy = c;
- }
- if (y == maxy)
- return;
-
- if (clip & 0x80008000)
- {
- miFillPolygon (pDrawable, pGC, shape, mode, vertex2p - (int *) ptsIn, ptsIn);
- return;
- }
-
- mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrl);
- addrl = mfbScanlineDelta(addrl, y + pDrawable->y, nlwidth);
- origin = intToX(origin);
- vertex2p = vertex1p;
- vertex2 = vertex1 = *vertex2p++;
- if (vertex2p == endp)
- vertex2p = (int *) ptsIn;
-#define Setup(c,x,vertex,dx,dy,e,sign,step) {\
- x = intToX(vertex); \
- if (dy = intToY(c) - y) { \
- dx = intToX(c) - x; \
- step = 0; \
- if (dx >= 0) \
- { \
- e = 0; \
- sign = 1; \
- if (dx >= dy) {\
- step = dx / dy; \
- dx = dx % dy; \
- } \
- } \
- else \
- { \
- e = 1 - dy; \
- sign = -1; \
- dx = -dx; \
- if (dx >= dy) { \
- step = - (dx / dy); \
- dx = dx % dy; \
- } \
- } \
- } \
- x += origin; \
- vertex = c; \
-}
-
-#define Step(x,dx,dy,e,sign,step) {\
- x += step; \
- if ((e += dx) > 0) \
- { \
- x += sign; \
- e -= dy; \
- } \
-}
- for (;;)
- {
- if (y == intToY(vertex1))
- {
- do
- {
- if (vertex1p == (int *) ptsIn)
- vertex1p = endp;
- c = *--vertex1p;
- Setup (c,x1,vertex1,dx1,dy1,e1,sign1,step1)
- } while (y >= intToY(vertex1));
- h = dy1;
- }
- else
- {
- Step(x1,dx1,dy1,e1,sign1,step1)
- h = intToY(vertex1) - y;
- }
- if (y == intToY(vertex2))
- {
- do
- {
- c = *vertex2p++;
- if (vertex2p == endp)
- vertex2p = (int *) ptsIn;
- Setup (c,x2,vertex2,dx2,dy2,e2,sign2,step2)
- } while (y >= intToY(vertex2));
- if (dy2 < h)
- h = dy2;
- }
- else
- {
- Step(x2,dx2,dy2,e2,sign2,step2)
- if ((c = (intToY(vertex2) - y)) < h)
- h = c;
- }
- /* fill spans for this segment */
- y += h;
- for (;;)
- {
- l = x1;
- r = x2;
- nmiddle = x2 - x1;
- if (nmiddle < 0)
- {
- nmiddle = -nmiddle;
- l = x2;
- r = x1;
- }
- c = l & PIM;
- l -= c;
- l = l >> PWSH;
- addr = addrl + l;
- if (c + nmiddle < PPW)
- {
- mask = SCRRIGHT (bits,c) ^ SCRRIGHT (bits,c+nmiddle);
- *addr OPEQ mask;
- }
- else
- {
- if (c)
- {
- mask = SCRRIGHT(bits, c);
- *addr OPEQ mask;
- nmiddle += c - PPW;
- addr++;
- }
- nmiddle >>= PWSH;
- Duff (nmiddle, *addr++ EQWHOLEWORD)
- if (mask = ~SCRRIGHT(bits, r & PIM))
- *addr OPEQ mask;
- }
- if (!--h)
- break;
- mfbScanlineInc(addrl, nlwidth);
- Step(x1,dx1,dy1,e1,sign1,step1)
- Step(x2,dx2,dy2,e2,sign2,step2)
- }
- if (y == maxy)
- break;
- mfbScanlineInc(addrl, nlwidth);
- }
-}
projects / rdpsrv / blobdiff