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
|
#ifndef __GLX_unpack_h__
#define __GLX_unpack_h__
/* $XFree86: xc/programs/Xserver/GL/glx/unpack.h,v 1.2 1999/06/14 07:31:36 dawes Exp $ */
/*
** The contents of this file are subject to the GLX Public License Version 1.0
** (the "License"). You may not use this file except in compliance with the
** License. You may obtain a copy of the License at Silicon Graphics, Inc.,
** attn: Legal Services, 2011 N. Shoreline Blvd., Mountain View, CA 94043
** or at http://www.sgi.com/software/opensource/glx/license.html.
**
** Software distributed under the License is distributed on an "AS IS"
** basis. ALL WARRANTIES ARE DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY
** IMPLIED WARRANTIES OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
** PURPOSE OR OF NON- INFRINGEMENT. See the License for the specific
** language governing rights and limitations under the License.
**
** The Original Software is GLX version 1.2 source code, released February,
** 1999. The developer of the Original Software is Silicon Graphics, Inc.
** Those portions of the Subject Software created by Silicon Graphics, Inc.
** are Copyright (c) 1991-9 Silicon Graphics, Inc. All Rights Reserved.
**
** $SGI$
*/
#define __GLX_PAD(s) (((s)+3) & (GLuint)~3)
/*
** Fetch the context-id out of a SingleReq request pointed to by pc.
*/
#define __GLX_GET_SINGLE_CONTEXT_TAG(pc) (((xGLXSingleReq*)pc)->contextTag)
#define __GLX_GET_VENDPRIV_CONTEXT_TAG(pc) (((xGLXVendorPrivateReq*)pc)->contextTag)
/*
** Fetch a double from potentially unaligned memory.
*/
#ifdef __GLX_ALIGN64
#define __GLX_MEM_COPY(dst,src,n) memcpy(dst,src,n)
#define __GLX_GET_DOUBLE(dst,src) __GLX_MEM_COPY(&dst,src,8)
#else
#define __GLX_GET_DOUBLE(dst,src) (dst) = *((GLdouble*)(src))
#endif
extern void __glXMemInit();
extern xGLXSingleReply __glXReply;
#define __GLX_BEGIN_REPLY(size) \
__glXReply.length = __GLX_PAD(size) >> 2; \
__glXReply.type = X_Reply; \
__glXReply.sequenceNumber = client->sequence;
#define __GLX_SEND_HEADER() \
WriteToClient( client, sz_xGLXSingleReply, (char *)&__glXReply);
#define __GLX_PUT_RETVAL(a) \
__glXReply.retval = (a);
#define __GLX_PUT_SIZE(a) \
__glXReply.size = (a);
#define __GLX_PUT_RENDERMODE(m) \
__glXReply.pad3 = (m)
/*
** Get a buffer to hold returned data, with the given alignment. If we have
** to realloc, allocate size+align, in case the pointer has to be bumped for
** alignment. The answerBuffer should already be aligned.
**
** NOTE: the cast (long)res below assumes a long is large enough to hold a
** pointer.
*/
#define __GLX_GET_ANSWER_BUFFER(res,cl,size,align) \
if ((size) > sizeof(answerBuffer)) { \
int bump; \
if ((cl)->returnBufSize < (size)+(align)) { \
(cl)->returnBuf = (GLbyte*)Xrealloc((cl)->returnBuf, \
(size)+(align)); \
if (!(cl)->returnBuf) { \
return BadAlloc; \
} \
(cl)->returnBufSize = (size)+(align); \
} \
res = (char*)cl->returnBuf; \
bump = (long)(res) % (align); \
if (bump) res += (align) - (bump); \
} else { \
res = (char *)answerBuffer; \
}
#define __GLX_PUT_BYTE() \
*(GLbyte *)&__glXReply.pad3 = *(GLbyte *)answer
#define __GLX_PUT_SHORT() \
*(GLshort *)&__glXReply.pad3 = *(GLshort *)answer
#define __GLX_PUT_INT() \
*(GLint *)&__glXReply.pad3 = *(GLint *)answer
#define __GLX_PUT_FLOAT() \
*(GLfloat *)&__glXReply.pad3 = *(GLfloat *)answer
#define __GLX_PUT_DOUBLE() \
*(GLdouble *)&__glXReply.pad3 = *(GLdouble *)answer
#define __GLX_SEND_BYTE_ARRAY(len) \
WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT8), (char *)answer)
#define __GLX_SEND_SHORT_ARRAY(len) \
WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), (char *)answer)
#define __GLX_SEND_INT_ARRAY(len) \
WriteToClient(client, (len)*__GLX_SIZE_INT32, (char *)answer)
#define __GLX_SEND_FLOAT_ARRAY(len) \
WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, (char *)answer)
#define __GLX_SEND_DOUBLE_ARRAY(len) \
WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, (char *)answer)
#define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len)
#define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len)
#define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len)
#define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len)
/*
** PERFORMANCE NOTE:
** Machine dependent optimizations abound here; these swapping macros can
** conceivably be replaced with routines that do the job faster.
*/
#define __GLX_DECLARE_SWAP_VARIABLES \
GLbyte sw; \
GLbyte *swapPC; \
GLbyte *swapEnd
#define __GLX_SWAP_INT(pc) \
sw = ((GLbyte *)(pc))[0]; \
((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \
((GLbyte *)(pc))[3] = sw; \
sw = ((GLbyte *)(pc))[1]; \
((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \
((GLbyte *)(pc))[2] = sw;
#define __GLX_SWAP_SHORT(pc) \
sw = ((GLbyte *)(pc))[0]; \
((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \
((GLbyte *)(pc))[1] = sw;
#define __GLX_SWAP_DOUBLE(pc) \
sw = ((GLbyte *)(pc))[0]; \
((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \
((GLbyte *)(pc))[7] = sw; \
sw = ((GLbyte *)(pc))[1]; \
((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \
((GLbyte *)(pc))[6] = sw; \
sw = ((GLbyte *)(pc))[2]; \
((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \
((GLbyte *)(pc))[5] = sw; \
sw = ((GLbyte *)(pc))[3]; \
((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \
((GLbyte *)(pc))[4] = sw;
#define __GLX_SWAP_FLOAT(pc) \
sw = ((GLbyte *)(pc))[0]; \
((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \
((GLbyte *)(pc))[3] = sw; \
sw = ((GLbyte *)(pc))[1]; \
((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \
((GLbyte *)(pc))[2] = sw;
#define __GLX_SWAP_INT_ARRAY(pc, count) \
swapPC = ((GLbyte *)(pc)); \
swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\
while (swapPC < swapEnd) { \
__GLX_SWAP_INT(swapPC); \
swapPC += __GLX_SIZE_INT32; \
}
#define __GLX_SWAP_SHORT_ARRAY(pc, count) \
swapPC = ((GLbyte *)(pc)); \
swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\
while (swapPC < swapEnd) { \
__GLX_SWAP_SHORT(swapPC); \
swapPC += __GLX_SIZE_INT16; \
}
#define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \
swapPC = ((GLbyte *)(pc)); \
swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\
while (swapPC < swapEnd) { \
__GLX_SWAP_DOUBLE(swapPC); \
swapPC += __GLX_SIZE_FLOAT64; \
}
#define __GLX_SWAP_FLOAT_ARRAY(pc, count) \
swapPC = ((GLbyte *)(pc)); \
swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\
while (swapPC < swapEnd) { \
__GLX_SWAP_FLOAT(swapPC); \
swapPC += __GLX_SIZE_FLOAT32; \
}
#define __GLX_SWAP_REPLY_HEADER() \
__GLX_SWAP_SHORT(&__glXReply.sequenceNumber); \
__GLX_SWAP_INT(&__glXReply.length);
#define __GLX_SWAP_REPLY_RETVAL() \
__GLX_SWAP_INT(&__glXReply.retval)
#define __GLX_SWAP_REPLY_SIZE() \
__GLX_SWAP_INT(&__glXReply.size)
#endif /* !__GLX_unpack_h__ */
|
