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a09e091a JB |
1 | #ifndef __GLX_unpack_h__ |
2 | #define __GLX_unpack_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 | #define __GLX_PAD(s) (((s)+3) & (GLuint)~3) | |
35 | ||
36 | /* | |
37 | ** Fetch the context-id out of a SingleReq request pointed to by pc. | |
38 | */ | |
39 | #define __GLX_GET_SINGLE_CONTEXT_TAG(pc) (((xGLXSingleReq*)pc)->contextTag) | |
40 | #define __GLX_GET_VENDPRIV_CONTEXT_TAG(pc) (((xGLXVendorPrivateReq*)pc)->contextTag) | |
41 | ||
42 | /* | |
43 | ** Fetch a double from potentially unaligned memory. | |
44 | */ | |
45 | #ifdef __GLX_ALIGN64 | |
46 | #define __GLX_MEM_COPY(dst,src,n) memmove(dst,src,n) | |
47 | #define __GLX_GET_DOUBLE(dst,src) __GLX_MEM_COPY(&dst,src,8) | |
48 | #else | |
49 | #define __GLX_GET_DOUBLE(dst,src) (dst) = *((GLdouble*)(src)) | |
50 | #endif | |
51 | ||
52 | extern void __glXMemInit(void); | |
53 | ||
54 | extern xGLXSingleReply __glXReply; | |
55 | ||
56 | #define __GLX_BEGIN_REPLY(size) \ | |
57 | __glXReply.length = __GLX_PAD(size) >> 2; \ | |
58 | __glXReply.type = X_Reply; \ | |
59 | __glXReply.sequenceNumber = client->sequence; | |
60 | ||
61 | #define __GLX_SEND_HEADER() \ | |
62 | WriteToClient (client, sz_xGLXSingleReply, &__glXReply); | |
63 | ||
64 | #define __GLX_PUT_RETVAL(a) \ | |
65 | __glXReply.retval = (a); | |
66 | ||
67 | #define __GLX_PUT_SIZE(a) \ | |
68 | __glXReply.size = (a); | |
69 | ||
70 | #define __GLX_PUT_RENDERMODE(m) \ | |
71 | __glXReply.pad3 = (m) | |
72 | ||
73 | /* | |
74 | ** Get a buffer to hold returned data, with the given alignment. If we have | |
75 | ** to realloc, allocate size+align, in case the pointer has to be bumped for | |
76 | ** alignment. The answerBuffer should already be aligned. | |
77 | ** | |
78 | ** NOTE: the cast (long)res below assumes a long is large enough to hold a | |
79 | ** pointer. | |
80 | */ | |
81 | #define __GLX_GET_ANSWER_BUFFER(res,cl,size,align) \ | |
82 | if ((size) > sizeof(answerBuffer)) { \ | |
83 | int bump; \ | |
84 | if ((cl)->returnBufSize < (size)+(align)) { \ | |
85 | (cl)->returnBuf = (GLbyte*)realloc((cl)->returnBuf, \ | |
86 | (size)+(align)); \ | |
87 | if (!(cl)->returnBuf) { \ | |
88 | return BadAlloc; \ | |
89 | } \ | |
90 | (cl)->returnBufSize = (size)+(align); \ | |
91 | } \ | |
92 | res = (char*)cl->returnBuf; \ | |
93 | bump = (long)(res) % (align); \ | |
94 | if (bump) res += (align) - (bump); \ | |
95 | } else { \ | |
96 | res = (char *)answerBuffer; \ | |
97 | } | |
98 | ||
99 | #define __GLX_PUT_BYTE() \ | |
100 | *(GLbyte *)&__glXReply.pad3 = *(GLbyte *)answer | |
101 | ||
102 | #define __GLX_PUT_SHORT() \ | |
103 | *(GLshort *)&__glXReply.pad3 = *(GLshort *)answer | |
104 | ||
105 | #define __GLX_PUT_INT() \ | |
106 | *(GLint *)&__glXReply.pad3 = *(GLint *)answer | |
107 | ||
108 | #define __GLX_PUT_FLOAT() \ | |
109 | *(GLfloat *)&__glXReply.pad3 = *(GLfloat *)answer | |
110 | ||
111 | #define __GLX_PUT_DOUBLE() \ | |
112 | *(GLdouble *)&__glXReply.pad3 = *(GLdouble *)answer | |
113 | ||
114 | #define __GLX_SEND_BYTE_ARRAY(len) \ | |
115 | WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT8), answer) | |
116 | ||
117 | #define __GLX_SEND_SHORT_ARRAY(len) \ | |
118 | WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), answer) | |
119 | ||
120 | #define __GLX_SEND_INT_ARRAY(len) \ | |
121 | WriteToClient(client, (len)*__GLX_SIZE_INT32, answer) | |
122 | ||
123 | #define __GLX_SEND_FLOAT_ARRAY(len) \ | |
124 | WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, answer) | |
125 | ||
126 | #define __GLX_SEND_DOUBLE_ARRAY(len) \ | |
127 | WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, answer) | |
128 | ||
129 | #define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) | |
130 | #define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) | |
131 | #define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len) | |
132 | #define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len) | |
133 | ||
134 | /* | |
135 | ** PERFORMANCE NOTE: | |
136 | ** Machine dependent optimizations abound here; these swapping macros can | |
137 | ** conceivably be replaced with routines that do the job faster. | |
138 | */ | |
139 | #define __GLX_DECLARE_SWAP_VARIABLES \ | |
140 | GLbyte sw | |
141 | ||
142 | #define __GLX_DECLARE_SWAP_ARRAY_VARIABLES \ | |
143 | GLbyte *swapPC; \ | |
144 | GLbyte *swapEnd | |
145 | ||
146 | #define __GLX_SWAP_INT(pc) \ | |
147 | sw = ((GLbyte *)(pc))[0]; \ | |
148 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ | |
149 | ((GLbyte *)(pc))[3] = sw; \ | |
150 | sw = ((GLbyte *)(pc))[1]; \ | |
151 | ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ | |
152 | ((GLbyte *)(pc))[2] = sw; | |
153 | ||
154 | #define __GLX_SWAP_SHORT(pc) \ | |
155 | sw = ((GLbyte *)(pc))[0]; \ | |
156 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \ | |
157 | ((GLbyte *)(pc))[1] = sw; | |
158 | ||
159 | #define __GLX_SWAP_DOUBLE(pc) \ | |
160 | sw = ((GLbyte *)(pc))[0]; \ | |
161 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \ | |
162 | ((GLbyte *)(pc))[7] = sw; \ | |
163 | sw = ((GLbyte *)(pc))[1]; \ | |
164 | ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \ | |
165 | ((GLbyte *)(pc))[6] = sw; \ | |
166 | sw = ((GLbyte *)(pc))[2]; \ | |
167 | ((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \ | |
168 | ((GLbyte *)(pc))[5] = sw; \ | |
169 | sw = ((GLbyte *)(pc))[3]; \ | |
170 | ((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \ | |
171 | ((GLbyte *)(pc))[4] = sw; | |
172 | ||
173 | #define __GLX_SWAP_FLOAT(pc) \ | |
174 | sw = ((GLbyte *)(pc))[0]; \ | |
175 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ | |
176 | ((GLbyte *)(pc))[3] = sw; \ | |
177 | sw = ((GLbyte *)(pc))[1]; \ | |
178 | ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ | |
179 | ((GLbyte *)(pc))[2] = sw; | |
180 | ||
181 | #define __GLX_SWAP_INT_ARRAY(pc, count) \ | |
182 | swapPC = ((GLbyte *)(pc)); \ | |
183 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\ | |
184 | while (swapPC < swapEnd) { \ | |
185 | __GLX_SWAP_INT(swapPC); \ | |
186 | swapPC += __GLX_SIZE_INT32; \ | |
187 | } | |
188 | ||
189 | #define __GLX_SWAP_SHORT_ARRAY(pc, count) \ | |
190 | swapPC = ((GLbyte *)(pc)); \ | |
191 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\ | |
192 | while (swapPC < swapEnd) { \ | |
193 | __GLX_SWAP_SHORT(swapPC); \ | |
194 | swapPC += __GLX_SIZE_INT16; \ | |
195 | } | |
196 | ||
197 | #define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \ | |
198 | swapPC = ((GLbyte *)(pc)); \ | |
199 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\ | |
200 | while (swapPC < swapEnd) { \ | |
201 | __GLX_SWAP_DOUBLE(swapPC); \ | |
202 | swapPC += __GLX_SIZE_FLOAT64; \ | |
203 | } | |
204 | ||
205 | #define __GLX_SWAP_FLOAT_ARRAY(pc, count) \ | |
206 | swapPC = ((GLbyte *)(pc)); \ | |
207 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\ | |
208 | while (swapPC < swapEnd) { \ | |
209 | __GLX_SWAP_FLOAT(swapPC); \ | |
210 | swapPC += __GLX_SIZE_FLOAT32; \ | |
211 | } | |
212 | ||
213 | #define __GLX_SWAP_REPLY_HEADER() \ | |
214 | __GLX_SWAP_SHORT(&__glXReply.sequenceNumber); \ | |
215 | __GLX_SWAP_INT(&__glXReply.length); | |
216 | ||
217 | #define __GLX_SWAP_REPLY_RETVAL() \ | |
218 | __GLX_SWAP_INT(&__glXReply.retval) | |
219 | ||
220 | #define __GLX_SWAP_REPLY_SIZE() \ | |
221 | __GLX_SWAP_INT(&__glXReply.size) | |
222 | ||
223 | #endif /* !__GLX_unpack_h__ */ |