1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* Copyright 1996 The XFree86 Project
*
* 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
* HARM HANEMAAYER 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.
*
* Written by Harm Hanemaayer (H.Hanemaayer@inter.nl.net).
*/
/* $XFree86$ */
/*
* Filled solid arcs, based on cfbfillarc.c.
*
* Fill arc using calls to low-level span fill. Because the math for
* each span can be done concurrently with the drawing of the span
* with a graphics coprocessor operation, this is faster than just
* using miPolyFillArc, which first calculates all the spans and then
* calls FillSpans.
*
* Clipped arcs are dispatched to FillSpans.
*/
#include "misc.h"
#include "xf86.h"
#include "xf86_ansic.h"
#include "xf86_OSproc.h"
#include "X.h"
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "xf86str.h"
#include "xaa.h"
#include "xaalocal.h"
#include "mifillarc.h"
#include "mi.h"
/*
* This is based on the integer-math versions from mi. Perhaps on a
* Pentium, the floating-point (double)-math version is faster.
*/
static void
XAAFillEllipseSolid(DrawablePtr pDraw, GCPtr pGC, xArc *arc)
{
XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
register int x, y, e;
int yk, xk, ym, xm, dx, dy, xorg, yorg;
int slw;
miFillArcRec info;
(*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu,
pGC->planemask);
miFillArcSetup(arc, &info);
MIFILLARCSETUP();
if (pGC->miTranslate)
{
xorg += pDraw->x;
yorg += pDraw->y;
}
while (y > 0)
{
MIFILLARCSTEP(slw);
if (slw > 0) {
(*infoRec->SubsequentSolidFillRect)(infoRec->pScrn, xorg - x,
yorg - y, slw, 1);
if (miFillArcLower(slw))
(*infoRec->SubsequentSolidFillRect)(infoRec->pScrn,
xorg - x, yorg + y + dy, slw, 1);
}
}
SET_SYNC_FLAG(infoRec);
}
#define ADDSPAN(l,r) \
if (r >= l) \
(*infoRec->SubsequentSolidFillRect)( \
infoRec->pScrn, l, ya, r - l + 1, 1);
#define ADDSLICESPANS(flip) \
if (!flip) \
{ \
ADDSPAN(xl, xr); \
} \
else \
{ \
xc = xorg - x; \
ADDSPAN(xc, xr); \
xc += slw - 1; \
ADDSPAN(xl, xc); \
}
static void
XAAFillArcSliceSolid(DrawablePtr pDraw, GCPtr pGC, xArc *arc)
{
XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
int yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
register int x, y, e;
miFillArcRec info;
miArcSliceRec slice;
int ya, xl, xr, xc;
(*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu,
pGC->planemask);
miFillArcSetup(arc, &info);
miFillArcSliceSetup(arc, &slice, pGC);
MIFILLARCSETUP();
slw = arc->height;
if (slice.flip_top || slice.flip_bot)
slw += (arc->height >> 1) + 1;
if (pGC->miTranslate)
{
xorg += pDraw->x;
yorg += pDraw->y;
slice.edge1.x += pDraw->x;
slice.edge2.x += pDraw->x;
}
while (y > 0)
{
MIFILLARCSTEP(slw);
MIARCSLICESTEP(slice.edge1);
MIARCSLICESTEP(slice.edge2);
if (miFillSliceUpper(slice))
{
ya = yorg - y;
MIARCSLICEUPPER(xl, xr, slice, slw);
ADDSLICESPANS(slice.flip_top);
}
if (miFillSliceLower(slice))
{
ya = yorg + y + dy;
MIARCSLICELOWER(xl, xr, slice, slw);
ADDSLICESPANS(slice.flip_bot);
}
}
SET_SYNC_FLAG(infoRec);
}
void
XAAPolyFillArcSolid(pDraw, pGC, narcs, parcs)
DrawablePtr pDraw;
GCPtr pGC;
int narcs;
xArc *parcs;
{
register xArc *arc;
register int i;
int x2, y2;
BoxRec box;
RegionPtr cclip;
cclip = pGC->pCompositeClip;
if(!REGION_NUM_RECTS(cclip))
return;
for (arc = parcs, i = narcs; --i >= 0; arc++)
{
if (miFillArcEmpty(arc))
continue;
if (miCanFillArc(arc))
{
box.x1 = arc->x + pDraw->x;
box.y1 = arc->y + pDraw->y;
/*
* Because box.x2 and box.y2 get truncated to 16 bits, and the
* RECT_IN_REGION test treats the resulting number as a signed
* integer, the RECT_IN_REGION test alone can go the wrong way.
* This can result in a server crash because the rendering
* routines in this file deal directly with cpu addresses
* of pixels to be stored, and do not clip or otherwise check
* that all such addresses are within their respective pixmaps.
* So we only allow the RECT_IN_REGION test to be used for
* values that can be expressed correctly in a signed short.
*/
x2 = box.x1 + (int)arc->width + 1;
box.x2 = x2;
y2 = box.y1 + (int)arc->height + 1;
box.y2 = y2;
if ( (x2 <= MAXSHORT) && (y2 <= MAXSHORT) &&
(RECT_IN_REGION(pDraw->pScreen, cclip, &box) == rgnIN) )
{
if ((arc->angle2 >= FULLCIRCLE) ||
(arc->angle2 <= -FULLCIRCLE))
XAAFillEllipseSolid(pDraw, pGC, arc);
else
XAAFillArcSliceSolid(pDraw, pGC, arc);
continue;
}
}
miPolyFillArc(pDraw, pGC, 1, arc);
}
}
|
