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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/*
* $XFree86: xc/programs/Xserver/render/picture.h,v 1.20tsi Exp $
*
* Copyright © 2000 SuSE, Inc.
*
* 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 SuSE not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. SuSE makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
* 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.
*
* Author: Keith Packard, SuSE, Inc.
*/
#ifndef _PICTURE_H_
#define _PICTURE_H_
typedef struct _DirectFormat *DirectFormatPtr;
typedef struct _PictFormat *PictFormatPtr;
typedef struct _Picture *PicturePtr;
/*
* While the protocol is generous in format support, the
* sample implementation allows only packed RGB and GBR
* representations for data to simplify software rendering,
*/
#define PICT_FORMAT(bpp,type,a,r,g,b) (((bpp) << 24) | \
((type) << 16) | \
((a) << 12) | \
((r) << 8) | \
((g) << 4) | \
((b)))
/*
* gray/color formats use a visual index instead of argb
*/
#define PICT_VISFORMAT(bpp,type,vi) (((bpp) << 24) | \
((type) << 16) | \
((vi)))
#define PICT_FORMAT_BPP(f) (((f) >> 24) )
#define PICT_FORMAT_TYPE(f) (((f) >> 16) & 0xff)
#define PICT_FORMAT_A(f) (((f) >> 12) & 0x0f)
#define PICT_FORMAT_R(f) (((f) >> 8) & 0x0f)
#define PICT_FORMAT_G(f) (((f) >> 4) & 0x0f)
#define PICT_FORMAT_B(f) (((f) ) & 0x0f)
#define PICT_FORMAT_RGB(f) (((f) ) & 0xfff)
#define PICT_FORMAT_VIS(f) (((f) ) & 0xffff)
#define PICT_TYPE_OTHER 0
#define PICT_TYPE_A 1
#define PICT_TYPE_ARGB 2
#define PICT_TYPE_ABGR 3
#define PICT_TYPE_COLOR 4
#define PICT_TYPE_GRAY 5
#define PICT_FORMAT_COLOR(f) (PICT_FORMAT_TYPE(f) & 2)
/* 32bpp formats */
#define PICT_a8r8g8b8 PICT_FORMAT(32,PICT_TYPE_ARGB,8,8,8,8)
#define PICT_x8r8g8b8 PICT_FORMAT(32,PICT_TYPE_ARGB,0,8,8,8)
#define PICT_a8b8g8r8 PICT_FORMAT(32,PICT_TYPE_ABGR,8,8,8,8)
#define PICT_x8b8g8r8 PICT_FORMAT(32,PICT_TYPE_ABGR,0,8,8,8)
/* 24bpp formats */
#define PICT_r8g8b8 PICT_FORMAT(24,PICT_TYPE_ARGB,0,8,8,8)
#define PICT_b8g8r8 PICT_FORMAT(24,PICT_TYPE_ABGR,0,8,8,8)
/* 16bpp formats */
#define PICT_r5g6b5 PICT_FORMAT(16,PICT_TYPE_ARGB,0,5,6,5)
#define PICT_b5g6r5 PICT_FORMAT(16,PICT_TYPE_ABGR,0,5,6,5)
#define PICT_a1r5g5b5 PICT_FORMAT(16,PICT_TYPE_ARGB,1,5,5,5)
#define PICT_x1r5g5b5 PICT_FORMAT(16,PICT_TYPE_ARGB,0,5,5,5)
#define PICT_a1b5g5r5 PICT_FORMAT(16,PICT_TYPE_ABGR,1,5,5,5)
#define PICT_x1b5g5r5 PICT_FORMAT(16,PICT_TYPE_ABGR,0,5,5,5)
#define PICT_a4r4g4b4 PICT_FORMAT(16,PICT_TYPE_ARGB,4,4,4,4)
#define PICT_x4r4g4b4 PICT_FORMAT(16,PICT_TYPE_ARGB,4,4,4,4)
#define PICT_a4b4g4r4 PICT_FORMAT(16,PICT_TYPE_ARGB,4,4,4,4)
#define PICT_x4b4g4r4 PICT_FORMAT(16,PICT_TYPE_ARGB,4,4,4,4)
/* 8bpp formats */
#define PICT_a8 PICT_FORMAT(8,PICT_TYPE_A,8,0,0,0)
#define PICT_r3g3b2 PICT_FORMAT(8,PICT_TYPE_ARGB,0,3,3,2)
#define PICT_b2g3r3 PICT_FORMAT(8,PICT_TYPE_ABGR,0,3,3,2)
#define PICT_a2r2g2b2 PICT_FORMAT(8,PICT_TYPE_ARGB,2,2,2,2)
#define PICT_a2b2g2r2 PICT_FORMAT(8,PICT_TYPE_ABGR,2,2,2,2)
#define PICT_c8 PICT_FORMAT(8,PICT_TYPE_COLOR,0,0,0,0)
#define PICT_g8 PICT_FORMAT(8,PICT_TYPE_GRAY,0,0,0,0)
/* 4bpp formats */
#define PICT_a4 PICT_FORMAT(4,PICT_TYPE_A,4,0,0,0)
#define PICT_r1g2b1 PICT_FORMAT(4,PICT_TYPE_ARGB,0,1,2,1)
#define PICT_b1g2r1 PICT_FORMAT(4,PICT_TYPE_ABGR,0,1,2,1)
#define PICT_a1r1g1b1 PICT_FORMAT(4,PICT_TYPE_ARGB,1,1,1,1)
#define PICT_a1b1g1r1 PICT_FORMAT(4,PICT_TYPE_ABGR,1,1,1,1)
#define PICT_c4 PICT_FORMAT(4,PICT_TYPE_COLOR,0,0,0,0)
#define PICT_g4 PICT_FORMAT(4,PICT_TYPE_GRAY,0,0,0,0)
/* 1bpp formats */
#define PICT_a1 PICT_FORMAT(1,PICT_TYPE_A,1,0,0,0)
#define PICT_g1 PICT_FORMAT(1,PICT_TYPE_GRAY,0,0,0,0)
/*
* For dynamic indexed visuals (GrayScale and PseudoColor), these control the
* selection of colors allocated for drawing to Pictures. The default
* policy depends on the size of the colormap:
*
* Size Default Policy
* ----------------------------
* < 64 PolicyMono
* < 256 PolicyGray
* 256 PolicyColor (only on PseudoColor)
*
* The actual allocation code lives in miindex.c, and so is
* austensibly server dependent, but that code does:
*
* PolicyMono Allocate no additional colors, use black and white
* PolicyGray Allocate 13 gray levels (11 cells used)
* PolicyColor Allocate a 4x4x4 cube and 13 gray levels (71 cells used)
* PolicyAll Allocate as big a cube as possible, fill with gray (all)
*
* Here's a picture to help understand how many colors are
* actually allocated (this is just the gray ramp):
*
* gray level
* all 0000 1555 2aaa 4000 5555 6aaa 8000 9555 aaaa bfff d555 eaaa ffff
* b/w 0000 ffff
* 4x4x4 5555 aaaa
* extra 1555 2aaa 4000 6aaa 8000 9555 bfff d555 eaaa
*
* The default colormap supplies two gray levels (black/white), the
* 4x4x4 cube allocates another two and nine more are allocated to fill
* in the 13 levels. When the 4x4x4 cube is not allocated, a total of
* 11 cells are allocated.
*/
#define PictureCmapPolicyInvalid -1
#define PictureCmapPolicyDefault 0
#define PictureCmapPolicyMono 1
#define PictureCmapPolicyGray 2
#define PictureCmapPolicyColor 3
#define PictureCmapPolicyAll 4
extern int PictureCmapPolicy;
int PictureParseCmapPolicy (const char *name);
extern int RenderErrBase;
extern int RenderClientPrivateIndex;
/* Fixed point updates from Carl Worth, USC, Information Sciences Institute */
#if defined(WIN32) && !defined(__GNUC__)
typedef __int64 xFixed_32_32;
#else
# if defined (_LP64) || \
defined(__alpha__) || defined(__alpha) || \
defined(ia64) || defined(__ia64__) || \
defined(__sparc64__) || \
defined(__s390x__) || \
defined(amd64) || defined (__amd64__) || \
(defined(sgi) && (_MIPS_SZLONG == 64))
typedef long xFixed_32_32;
# else
# if defined(__GNUC__) && \
((__GNUC__ > 2) || \
((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ > 7)))
__extension__
# endif
typedef long long int xFixed_32_32;
# endif
#endif
typedef xFixed_32_32 xFixed_48_16;
#define MAX_FIXED_48_16 ((xFixed_48_16) 0x7fffffff)
#define MIN_FIXED_48_16 (-((xFixed_48_16) 1 << 31))
typedef CARD32 xFixed_1_31;
typedef CARD32 xFixed_1_16;
typedef INT32 xFixed_16_16;
/*
* An unadorned "xFixed" is the same as xFixed_16_16,
* (since it's quite common in the code)
*/
typedef xFixed_16_16 xFixed;
#define XFIXED_BITS 16
#define xFixedToInt(f) (int) ((f) >> XFIXED_BITS)
#define IntToxFixed(i) ((xFixed) (i) << XFIXED_BITS)
#define xFixedE ((xFixed) 1)
#define xFixed1 (IntToxFixed(1))
#define xFixed1MinusE (xFixed1 - xFixedE)
#define xFixedFrac(f) ((f) & xFixed1MinusE)
#define xFixedFloor(f) ((f) & ~xFixed1MinusE)
#define xFixedCeil(f) xFixedFloor((f) + xFixed1MinusE)
#define xFixedFraction(f) ((f) & xFixed1MinusE)
#define xFixedMod2(f) ((f) & (xFixed1 | xFixed1MinusE))
/* whether 't' is a well defined not obviously empty trapezoid */
#define xTrapezoidValid(t) ((t)->left.p1.y != (t)->left.p2.y && \
(t)->right.p1.y != (t)->right.p2.y && \
(int) ((t)->bottom - (t)->top) > 0)
/*
* Standard NTSC luminance conversions:
*
* y = r * 0.299 + g * 0.587 + b * 0.114
*
* Approximate this for a bit more speed:
*
* y = (r * 153 + g * 301 + b * 58) / 512
*
* This gives 17 bits of luminance; to get 15 bits, lop the low two
*/
#define CvtR8G8B8toY15(s) (((((s) >> 16) & 0xff) * 153 + \
(((s) >> 8) & 0xff) * 301 + \
(((s) ) & 0xff) * 58) >> 2)
#endif /* _PICTURE_H_ */
|
