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1 #ifndef __GLX_packsingle_h__
2 #define __GLX_packsingle_h__
3 
4 /*
5  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
6  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the "Software"),
10  * to deal in the Software without restriction, including without limitation
11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12  * and/or sell copies of the Software, and to permit persons to whom the
13  * Software is furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice including the dates of first publication and
16  * either this permission notice or a reference to
17  * http://oss.sgi.com/projects/FreeB/
18  * shall be included in all copies or substantial portions of the Software.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
24  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
25  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26  * SOFTWARE.
27  *
28  * Except as contained in this notice, the name of Silicon Graphics, Inc.
29  * shall not be used in advertising or otherwise to promote the sale, use or
30  * other dealings in this Software without prior written authorization from
31  * Silicon Graphics, Inc.
32  */
33 
34 #include "packrender.h"
35 
36 /*
37 ** The macros in this header convert wire protocol data types to the client
38 ** machine's native data types.  The header is part of the porting layer of
39 ** the client library, and it is intended that hardware vendors will rewrite
40 ** this header to suit their own machines.
41 */
42 
43 /*
44 ** Dummy define to make the GetReqExtra macro happy.  The value is not
45 ** used, but instead the code in __GLX_SINGLE_BEGIN issues its own store
46 ** to req->reqType with the proper code (our extension code).
47 */
48 #define X_GLXSingle 0
49 
50 /* Declare common variables used during a single command */
51 #define __GLX_SINGLE_DECLARE_VARIABLES()         \
52    struct glx_context *gc = __glXGetCurrentContext();  \
53    GLubyte *pc, *pixelHeaderPC;                  \
54    GLuint compsize, cmdlen;                      \
55    Display *dpy = gc->currentDpy;                \
56    xGLXSingleReq *req
57 
58 #define __GLX_SINGLE_LOAD_VARIABLES()           \
59    pc = gc->pc;                                 \
60    /* Muffle compilers */                       \
61    pixelHeaderPC = NULL;  (void)pixelHeaderPC;     \
62    compsize = 0;       (void)compsize;          \
63    cmdlen = 0;         (void)cmdlen
64 
65 /* Start a single command */
66 #define __GLX_SINGLE_BEGIN(opcode,bytes)        \
67    if (dpy) {                                   \
68    (void) __glXFlushRenderBuffer(gc, pc);       \
69    LockDisplay(dpy);                            \
70    GetReqExtra(GLXSingle,bytes,req);            \
71    req->reqType = gc->majorOpcode;              \
72    req->glxCode = opcode;                       \
73    req->contextTag = gc->currentContextTag;     \
74    pc = ((GLubyte *)(req) + sz_xGLXSingleReq)
75 
76 /* End a single command */
77 #define __GLX_SINGLE_END()       \
78    UnlockDisplay(dpy);           \
79    SyncHandle();                 \
80    }
81 
82 /* Store data to sending for a single command */
83 #define __GLX_SINGLE_PUT_CHAR(offset,a)         \
84    *((INT8 *) (pc + offset)) = a
85 
86 #define __GLX_SINGLE_PUT_SHORT(offset,a)        \
87    *((INT16 *) (pc + offset)) = a
88 
89 #define __GLX_SINGLE_PUT_LONG(offset,a)         \
90    *((INT32 *) (pc + offset)) = a
91 
92 #define __GLX_SINGLE_PUT_FLOAT(offset,a)        \
93    *((FLOAT32 *) (pc + offset)) = a
94 
95 /* Read support macros */
96 #define __GLX_SINGLE_READ_XREPLY()                    \
97    (void) _XReply(dpy, (xReply*) &reply, 0, False)
98 
99 #define __GLX_SINGLE_GET_RETVAL(a,cast)         \
100    a = (cast) reply.retval
101 
102 #define __GLX_SINGLE_GET_SIZE(a)                \
103    a = (GLint) reply.size
104 
105 #define __GLX_SINGLE_GET_CHAR(p)                \
106    memcpy((p), &reply.pad3, 1);
107 
108 #define __GLX_SINGLE_GET_SHORT(p)               \
109    memcpy((p), &reply.pad3, 2);
110 
111 #define __GLX_SINGLE_GET_LONG(p)                \
112    memcpy((p), &reply.pad3, 4);
113 
114 #define __GLX_SINGLE_GET_FLOAT(p)               \
115    memcpy((p), &reply.pad3, 4);
116 
117 #define __GLX_SINGLE_GET_DOUBLE(p)              \
118    memcpy((p), &reply.pad3, 8);
119 
120 /* Get an array of typed data */
121 #define __GLX_SINGLE_GET_VOID_ARRAY(a,alen)     \
122    {                                            \
123       GLint slop = alen*__GLX_SIZE_INT8 & 3;    \
124       _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT8);  \
125       if (slop) _XEatData(dpy,4-slop);             \
126    }
127 
128 #define __GLX_SINGLE_GET_CHAR_ARRAY(a,alen)     \
129    {                                            \
130       GLint slop = alen*__GLX_SIZE_INT8 & 3;    \
131       _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT8);  \
132       if (slop) _XEatData(dpy,4-slop);             \
133    }
134 
135 
136 #define __GLX_SINGLE_GET_SHORT_ARRAY(a,alen)    \
137    {                                            \
138       GLint slop = (alen*__GLX_SIZE_INT16) & 3;    \
139       _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT16); \
140       if (slop) _XEatData(dpy,4-slop);             \
141    }
142 
143 #define __GLX_SINGLE_GET_LONG_ARRAY(a,alen)        \
144    _XRead(dpy,(char *)a,alen*__GLX_SIZE_INT32);
145 
146 #define __GLX_SINGLE_GET_FLOAT_ARRAY(a,alen)       \
147    _XRead(dpy,(char *)a,alen*__GLX_SIZE_FLOAT32);
148 
149 #define __GLX_SINGLE_GET_DOUBLE_ARRAY(a,alen)      \
150    _XRead(dpy,(char *)a,alen*__GLX_SIZE_FLOAT64);
151 
152 #endif /* !__GLX_packsingle_h__ */
153