1 /*
2 * Copyright © 1998 Keith Packard
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of Keith Packard not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission. Keith Packard makes no
11 * representations about the suitability of this software for any purpose. It
12 * is provided "as is" without express or implied warranty.
13 *
14 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20 * PERFORMANCE OF THIS SOFTWARE.
21 */
22
23 #ifdef HAVE_DIX_CONFIG_H
24 #include <dix-config.h>
25 #endif
26
27 #include "fb.h"
28
29 static void
fbPushPattern(DrawablePtr pDrawable,GCPtr pGC,FbStip * src,FbStride srcStride,int srcX,int x,int y,int width,int height)30 fbPushPattern(DrawablePtr pDrawable,
31 GCPtr pGC,
32 FbStip * src,
33 FbStride srcStride, int srcX, int x, int y, int width, int height)
34 {
35 FbStip *s, bitsMask, bitsMask0, bits;
36 int xspan;
37 int w;
38 int lenspan;
39
40 src += srcX >> FB_STIP_SHIFT;
41 srcX &= FB_STIP_MASK;
42
43 bitsMask0 = FbStipMask(srcX, 1);
44
45 while (height--) {
46 bitsMask = bitsMask0;
47 w = width;
48 s = src;
49 src += srcStride;
50 bits = READ(s++);
51 xspan = x;
52 while (w) {
53 if (bits & bitsMask) {
54 lenspan = 0;
55 do {
56 lenspan++;
57 if (lenspan == w)
58 break;
59 bitsMask = FbStipRight(bitsMask, 1);
60 if (!bitsMask) {
61 bits = READ(s++);
62 bitsMask = FbBitsMask(0, 1);
63 }
64 } while (bits & bitsMask);
65 fbFill(pDrawable, pGC, xspan, y, lenspan, 1);
66 xspan += lenspan;
67 w -= lenspan;
68 }
69 else {
70 do {
71 w--;
72 xspan++;
73 if (!w)
74 break;
75 bitsMask = FbStipRight(bitsMask, 1);
76 if (!bitsMask) {
77 bits = READ(s++);
78 bitsMask = FbBitsMask(0, 1);
79 }
80 } while (!(bits & bitsMask));
81 }
82 }
83 y++;
84 }
85 }
86
87 static void
fbPushFill(DrawablePtr pDrawable,GCPtr pGC,FbStip * src,FbStride srcStride,int srcX,int x,int y,int width,int height)88 fbPushFill(DrawablePtr pDrawable,
89 GCPtr pGC,
90 FbStip * src,
91 FbStride srcStride, int srcX, int x, int y, int width, int height)
92 {
93 FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
94
95 if (pGC->fillStyle == FillSolid) {
96 FbBits *dst;
97 FbStride dstStride;
98 int dstBpp;
99 int dstXoff, dstYoff;
100 int dstX;
101 int dstWidth;
102
103 fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
104 dst = dst + (y + dstYoff) * dstStride;
105 dstX = (x + dstXoff) * dstBpp;
106 dstWidth = width * dstBpp;
107 if (dstBpp == 1) {
108 fbBltStip(src,
109 srcStride,
110 srcX,
111 (FbStip *) dst,
112 FbBitsStrideToStipStride(dstStride),
113 dstX,
114 dstWidth,
115 height,
116 FbStipple1Rop(pGC->alu, pGC->fgPixel), pPriv->pm, dstBpp);
117 }
118 else {
119 fbBltOne(src,
120 srcStride,
121 srcX,
122 dst,
123 dstStride,
124 dstX,
125 dstBpp,
126 dstWidth,
127 height,
128 pPriv->and, pPriv->xor,
129 fbAnd(GXnoop, (FbBits) 0, FB_ALLONES),
130 fbXor(GXnoop, (FbBits) 0, FB_ALLONES));
131 }
132 fbFinishAccess(pDrawable);
133 }
134 else {
135 fbPushPattern(pDrawable, pGC, src, srcStride, srcX,
136 x, y, width, height);
137 }
138 }
139
140 void
fbPushImage(DrawablePtr pDrawable,GCPtr pGC,FbStip * src,FbStride srcStride,int srcX,int x,int y,int width,int height)141 fbPushImage(DrawablePtr pDrawable,
142 GCPtr pGC,
143 FbStip * src,
144 FbStride srcStride, int srcX, int x, int y, int width, int height)
145 {
146 RegionPtr pClip = fbGetCompositeClip(pGC);
147 int nbox;
148 BoxPtr pbox;
149 int x1, y1, x2, y2;
150
151 for (nbox = RegionNumRects(pClip),
152 pbox = RegionRects(pClip); nbox--; pbox++) {
153 x1 = x;
154 y1 = y;
155 x2 = x + width;
156 y2 = y + height;
157 if (x1 < pbox->x1)
158 x1 = pbox->x1;
159 if (y1 < pbox->y1)
160 y1 = pbox->y1;
161 if (x2 > pbox->x2)
162 x2 = pbox->x2;
163 if (y2 > pbox->y2)
164 y2 = pbox->y2;
165 if (x1 >= x2 || y1 >= y2)
166 continue;
167 fbPushFill(pDrawable,
168 pGC,
169 src + (y1 - y) * srcStride,
170 srcStride, srcX + (x1 - x), x1, y1, x2 - x1, y2 - y1);
171 }
172 }
173
174 void
fbPushPixels(GCPtr pGC,PixmapPtr pBitmap,DrawablePtr pDrawable,int dx,int dy,int xOrg,int yOrg)175 fbPushPixels(GCPtr pGC,
176 PixmapPtr pBitmap,
177 DrawablePtr pDrawable, int dx, int dy, int xOrg, int yOrg)
178 {
179 FbStip *stip;
180 FbStride stipStride;
181 int stipBpp;
182 _X_UNUSED int stipXoff, stipYoff;
183
184 fbGetStipDrawable(&pBitmap->drawable, stip, stipStride, stipBpp, stipXoff,
185 stipYoff);
186
187 fbPushImage(pDrawable, pGC, stip, stipStride, 0, xOrg, yOrg, dx, dy);
188 }
189