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
239
240
241
242
243
244
245
246
247
248
|
#ifndef __GLX_packrender_h__
#define __GLX_packrender_h__
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of 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, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#include "glxclient.h"
/*
** The macros in this header convert the client machine's native data types to
** wire protocol data types. The header is part of the porting layer of the
** client library, and it is intended that hardware vendors will rewrite this
** header to suit their own machines.
*/
/*
** Pad a count of bytes to the nearest multiple of 4. The X protocol
** transfers data in 4 byte quantities, so this macro is used to
** insure the right amount of data being sent.
*/
#define __GLX_PAD(a) (((a)+3) & ~3)
/*
** Network size parameters
*/
#define sz_double 8
/* Setup for all commands */
#define __GLX_DECLARE_VARIABLES() \
__GLXcontext *gc; \
GLubyte *pc, *pixelHeaderPC; \
GLuint compsize, cmdlen
#define __GLX_LOAD_VARIABLES() \
gc = __glXGetCurrentContext(); \
pc = gc->pc; \
/* Muffle compilers */ \
cmdlen = 0; (void)cmdlen; \
compsize = 0; (void)compsize; \
pixelHeaderPC = 0; (void)pixelHeaderPC
/*
** Variable sized command support macro. This macro is used by calls
** that are potentially larger than __GLX_SMALL_RENDER_CMD_SIZE.
** Because of their size, they may not automatically fit in the buffer.
** If the buffer can't hold the command then it is flushed so that
** the command will fit in the next buffer.
*/
#define __GLX_BEGIN_VARIABLE(opcode,size) \
if (pc + (size) > gc->bufEnd) { \
pc = __glXFlushRenderBuffer(gc, pc); \
} \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode)
#define __GLX_BEGIN_VARIABLE_LARGE(opcode,size) \
pc = __glXFlushRenderBuffer(gc, pc); \
__GLX_PUT_LONG(0,size); \
__GLX_PUT_LONG(4,opcode)
#define __GLX_BEGIN_VARIABLE_WITH_PIXEL(opcode,size) \
if (pc + (size) > gc->bufEnd) { \
pc = __glXFlushRenderBuffer(gc, pc); \
} \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode); \
pc += __GLX_RENDER_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_HDR_SIZE
#define __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL(opcode,size) \
pc = __glXFlushRenderBuffer(gc, pc); \
__GLX_PUT_LONG(0,size); \
__GLX_PUT_LONG(4,opcode); \
pc += __GLX_RENDER_LARGE_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_HDR_SIZE
#define __GLX_BEGIN_VARIABLE_WITH_PIXEL_3D(opcode,size) \
if (pc + (size) > gc->bufEnd) { \
pc = __glXFlushRenderBuffer(gc, pc); \
} \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode); \
pc += __GLX_RENDER_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_3D_HDR_SIZE
#define __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL_3D(opcode,size) \
pc = __glXFlushRenderBuffer(gc, pc); \
__GLX_PUT_LONG(0,size); \
__GLX_PUT_LONG(4,opcode); \
pc += __GLX_RENDER_LARGE_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_3D_HDR_SIZE
/*
** Fixed size command support macro. This macro is used by calls that
** are never larger than __GLX_SMALL_RENDER_CMD_SIZE. Because they
** always fit in the buffer, and because the buffer promises to
** maintain enough room for them, we don't need to check for space
** before doing the storage work.
*/
#define __GLX_BEGIN(opcode,size) \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode)
/*
** Finish a rendering command by advancing the pc. If the pc is now past
** the limit pointer then there is no longer room for a
** __GLX_SMALL_RENDER_CMD_SIZE sized command, which will break the
** assumptions present in the __GLX_BEGIN macro. In this case the
** rendering buffer is flushed out into the X protocol stream (which may
** or may not do I/O).
*/
#define __GLX_END(size) \
pc += size; \
if (pc > gc->limit) { \
(void) __glXFlushRenderBuffer(gc, pc); \
} else { \
gc->pc = pc; \
}
/* Array copy macros */
#define __GLX_MEM_COPY(dest,src,bytes) \
if (src && dest) \
memcpy(dest, src, bytes)
/* Single item copy macros */
#define __GLX_PUT_CHAR(offset,a) \
*((INT8 *) (pc + offset)) = a
#ifndef _CRAY
#define __GLX_PUT_SHORT(offset,a) \
*((INT16 *) (pc + offset)) = a
#define __GLX_PUT_LONG(offset,a) \
*((INT32 *) (pc + offset)) = a
#define __GLX_PUT_FLOAT(offset,a) \
*((FLOAT32 *) (pc + offset)) = a
#else
#define __GLX_PUT_SHORT(offset,a) \
{ GLubyte *cp = (pc+offset); \
int shift = (64-16) - ((int)(cp) >> (64-6)); \
*(int *)cp = (*(int *)cp & ~(0xffff << shift)) | ((a & 0xffff) << shift); }
#define __GLX_PUT_LONG(offset,a) \
{ GLubyte *cp = (pc+offset); \
int shift = (64-32) - ((int)(cp) >> (64-6)); \
*(int *)cp = (*(int *)cp & ~(0xffffffff << shift)) | ((a & 0xffffffff) << shift); }
#define __GLX_PUT_FLOAT(offset,a) \
gl_put_float((pc + offset),a)
#define __GLX_PUT_DOUBLE(offset,a) \
gl_put_double(pc + offset, a)
extern void gl_put_float(/*GLubyte *, struct cray_single*/);
extern void gl_put_double(/*GLubyte *, struct cray_double*/);
#endif
#ifndef _CRAY
#ifdef __GLX_ALIGN64
/*
** This can certainly be done better for a particular machine
** architecture!
*/
#define __GLX_PUT_DOUBLE(offset,a) \
__GLX_MEM_COPY(pc + offset, &a, 8)
#else
#define __GLX_PUT_DOUBLE(offset,a) \
*((FLOAT64 *) (pc + offset)) = a
#endif
#endif
#define __GLX_PUT_CHAR_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_INT8)
#ifndef _CRAY
#define __GLX_PUT_SHORT_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_INT16)
#define __GLX_PUT_LONG_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_INT32)
#define __GLX_PUT_FLOAT_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_FLOAT32)
#define __GLX_PUT_DOUBLE_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_FLOAT64)
#else
#define __GLX_PUT_SHORT_ARRAY(offset,a,alen) \
gl_put_short_array((GLubyte *)(pc + offset), a, alen * __GLX_SIZE_INT16)
#define __GLX_PUT_LONG_ARRAY(offset,a,alen) \
gl_put_long_array((GLubyte *)(pc + offset), (long *)a, alen * __GLX_SIZE_INT32)
#define __GLX_PUT_FLOAT_ARRAY(offset,a,alen) \
gl_put_float_array((GLubyte *)(pc + offset), (float *)a, alen * __GLX_SIZE_FLOAT32)
#define __GLX_PUT_DOUBLE_ARRAY(offset,a,alen) \
gl_put_double_array((GLubyte *)(pc + offset), (double *)a, alen * __GLX_SIZE_FLOAT64)
extern gl_put_short_array (GLubyte *, short *, int);
extern gl_put_long_array (GLubyte *, long *, int);
extern gl_put_float_array (GLubyte *, float *, int);
extern gl_put_double_array (GLubyte *, double *, int);
#endif /* _CRAY */
#endif /* !__GLX_packrender_h__ */
|
