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a09e091a JB |
1 | #ifdef HAVE_DIX_CONFIG_H |
2 | #include <dix-config.h> | |
3 | #endif | |
4 | ||
5 | #ifndef __GLX_unpack_h__ | |
6 | #define __GLX_unpack_h__ | |
7 | ||
8 | /* | |
9 | * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) | |
10 | * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. | |
11 | * | |
12 | * Permission is hereby granted, free of charge, to any person obtaining a | |
13 | * copy of this software and associated documentation files (the "Software"), | |
14 | * to deal in the Software without restriction, including without limitation | |
15 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
16 | * and/or sell copies of the Software, and to permit persons to whom the | |
17 | * Software is furnished to do so, subject to the following conditions: | |
18 | * | |
19 | * The above copyright notice including the dates of first publication and | |
20 | * either this permission notice or a reference to | |
21 | * http://oss.sgi.com/projects/FreeB/ | |
22 | * shall be included in all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
25 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
28 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF | |
29 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | * | |
32 | * Except as contained in this notice, the name of Silicon Graphics, Inc. | |
33 | * shall not be used in advertising or otherwise to promote the sale, use or | |
34 | * other dealings in this Software without prior written authorization from | |
35 | * Silicon Graphics, Inc. | |
36 | */ | |
37 | ||
38 | #define __GLX_PAD(s) (((s)+3) & (GLuint)~3) | |
39 | ||
40 | /* | |
41 | ** Fetch the context-id out of a SingleReq request pointed to by pc. | |
42 | */ | |
43 | #define __GLX_GET_SINGLE_CONTEXT_TAG(pc) (((xGLXSingleReq*)pc)->contextTag) | |
44 | #define __GLX_GET_VENDPRIV_CONTEXT_TAG(pc) (((xGLXVendorPrivateReq*)pc)->contextTag) | |
45 | ||
46 | /* | |
47 | ** Fetch a double from potentially unaligned memory. | |
48 | */ | |
49 | #ifdef __GLX_ALIGN64 | |
50 | #define __GLX_MEM_COPY(dst,src,n) memmove(dst,src,n) | |
51 | #define __GLX_GET_DOUBLE(dst,src) __GLX_MEM_COPY(&dst,src,8) | |
52 | #else | |
53 | #define __GLX_GET_DOUBLE(dst,src) (dst) = *((GLdouble*)(src)) | |
54 | #endif | |
55 | ||
56 | extern void __glXMemInit(void); | |
57 | ||
58 | extern xGLXSingleReply __glXReply; | |
59 | ||
60 | #define __GLX_BEGIN_REPLY(size) \ | |
61 | __glXReply.length = __GLX_PAD(size) >> 2; \ | |
62 | __glXReply.type = X_Reply; \ | |
63 | __glXReply.sequenceNumber = client->sequence; | |
64 | ||
65 | #define __GLX_SEND_HEADER() \ | |
66 | WriteToClient (client, sz_xGLXSingleReply, &__glXReply); | |
67 | ||
68 | #define __GLX_PUT_RETVAL(a) \ | |
69 | __glXReply.retval = (a); | |
70 | ||
71 | #define __GLX_PUT_SIZE(a) \ | |
72 | __glXReply.size = (a); | |
73 | ||
74 | #define __GLX_PUT_RENDERMODE(m) \ | |
75 | __glXReply.pad3 = (m) | |
76 | ||
77 | /* | |
78 | ** Get a buffer to hold returned data, with the given alignment. If we have | |
79 | ** to realloc, allocate size+align, in case the pointer has to be bumped for | |
80 | ** alignment. The answerBuffer should already be aligned. | |
81 | ** | |
82 | ** NOTE: the cast (long)res below assumes a long is large enough to hold a | |
83 | ** pointer. | |
84 | */ | |
85 | #define __GLX_GET_ANSWER_BUFFER(res,cl,size,align) \ | |
86 | if ((size) > sizeof(answerBuffer)) { \ | |
87 | int bump; \ | |
88 | if ((cl)->returnBufSize < (size)+(align)) { \ | |
89 | (cl)->returnBuf = (GLbyte*)realloc((cl)->returnBuf, \ | |
90 | (size)+(align)); \ | |
91 | if (!(cl)->returnBuf) { \ | |
92 | return BadAlloc; \ | |
93 | } \ | |
94 | (cl)->returnBufSize = (size)+(align); \ | |
95 | } \ | |
96 | res = (char*)cl->returnBuf; \ | |
97 | bump = (long)(res) % (align); \ | |
98 | if (bump) res += (align) - (bump); \ | |
99 | } else { \ | |
100 | res = (char *)answerBuffer; \ | |
101 | } | |
102 | ||
103 | #define __GLX_PUT_BYTE() \ | |
104 | *(GLbyte *)&__glXReply.pad3 = *(GLbyte *)answer | |
105 | ||
106 | #define __GLX_PUT_SHORT() \ | |
107 | *(GLshort *)&__glXReply.pad3 = *(GLshort *)answer | |
108 | ||
109 | #define __GLX_PUT_INT() \ | |
110 | *(GLint *)&__glXReply.pad3 = *(GLint *)answer | |
111 | ||
112 | #define __GLX_PUT_FLOAT() \ | |
113 | *(GLfloat *)&__glXReply.pad3 = *(GLfloat *)answer | |
114 | ||
115 | #define __GLX_PUT_DOUBLE() \ | |
116 | *(GLdouble *)&__glXReply.pad3 = *(GLdouble *)answer | |
117 | ||
118 | #define __GLX_SEND_BYTE_ARRAY(len) \ | |
119 | WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT8), answer) | |
120 | ||
121 | #define __GLX_SEND_SHORT_ARRAY(len) \ | |
122 | WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), answer) | |
123 | ||
124 | #define __GLX_SEND_INT_ARRAY(len) \ | |
125 | WriteToClient(client, (len)*__GLX_SIZE_INT32, answer) | |
126 | ||
127 | #define __GLX_SEND_FLOAT_ARRAY(len) \ | |
128 | WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, answer) | |
129 | ||
130 | #define __GLX_SEND_DOUBLE_ARRAY(len) \ | |
131 | WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, answer) | |
132 | ||
133 | #define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) | |
134 | #define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) | |
135 | #define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len) | |
136 | #define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len) | |
137 | ||
138 | /* | |
139 | ** PERFORMANCE NOTE: | |
140 | ** Machine dependent optimizations abound here; these swapping macros can | |
141 | ** conceivably be replaced with routines that do the job faster. | |
142 | */ | |
143 | #define __GLX_DECLARE_SWAP_VARIABLES \ | |
144 | GLbyte sw | |
145 | ||
146 | #define __GLX_DECLARE_SWAP_ARRAY_VARIABLES \ | |
147 | GLbyte *swapPC; \ | |
148 | GLbyte *swapEnd | |
149 | ||
150 | #define __GLX_SWAP_INT(pc) \ | |
151 | sw = ((GLbyte *)(pc))[0]; \ | |
152 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ | |
153 | ((GLbyte *)(pc))[3] = sw; \ | |
154 | sw = ((GLbyte *)(pc))[1]; \ | |
155 | ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ | |
156 | ((GLbyte *)(pc))[2] = sw; | |
157 | ||
158 | #define __GLX_SWAP_SHORT(pc) \ | |
159 | sw = ((GLbyte *)(pc))[0]; \ | |
160 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \ | |
161 | ((GLbyte *)(pc))[1] = sw; | |
162 | ||
163 | #define __GLX_SWAP_DOUBLE(pc) \ | |
164 | sw = ((GLbyte *)(pc))[0]; \ | |
165 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \ | |
166 | ((GLbyte *)(pc))[7] = sw; \ | |
167 | sw = ((GLbyte *)(pc))[1]; \ | |
168 | ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \ | |
169 | ((GLbyte *)(pc))[6] = sw; \ | |
170 | sw = ((GLbyte *)(pc))[2]; \ | |
171 | ((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \ | |
172 | ((GLbyte *)(pc))[5] = sw; \ | |
173 | sw = ((GLbyte *)(pc))[3]; \ | |
174 | ((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \ | |
175 | ((GLbyte *)(pc))[4] = sw; | |
176 | ||
177 | #define __GLX_SWAP_FLOAT(pc) \ | |
178 | sw = ((GLbyte *)(pc))[0]; \ | |
179 | ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ | |
180 | ((GLbyte *)(pc))[3] = sw; \ | |
181 | sw = ((GLbyte *)(pc))[1]; \ | |
182 | ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ | |
183 | ((GLbyte *)(pc))[2] = sw; | |
184 | ||
185 | #define __GLX_SWAP_INT_ARRAY(pc, count) \ | |
186 | swapPC = ((GLbyte *)(pc)); \ | |
187 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\ | |
188 | while (swapPC < swapEnd) { \ | |
189 | __GLX_SWAP_INT(swapPC); \ | |
190 | swapPC += __GLX_SIZE_INT32; \ | |
191 | } | |
192 | ||
193 | #define __GLX_SWAP_SHORT_ARRAY(pc, count) \ | |
194 | swapPC = ((GLbyte *)(pc)); \ | |
195 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\ | |
196 | while (swapPC < swapEnd) { \ | |
197 | __GLX_SWAP_SHORT(swapPC); \ | |
198 | swapPC += __GLX_SIZE_INT16; \ | |
199 | } | |
200 | ||
201 | #define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \ | |
202 | swapPC = ((GLbyte *)(pc)); \ | |
203 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\ | |
204 | while (swapPC < swapEnd) { \ | |
205 | __GLX_SWAP_DOUBLE(swapPC); \ | |
206 | swapPC += __GLX_SIZE_FLOAT64; \ | |
207 | } | |
208 | ||
209 | #define __GLX_SWAP_FLOAT_ARRAY(pc, count) \ | |
210 | swapPC = ((GLbyte *)(pc)); \ | |
211 | swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\ | |
212 | while (swapPC < swapEnd) { \ | |
213 | __GLX_SWAP_FLOAT(swapPC); \ | |
214 | swapPC += __GLX_SIZE_FLOAT32; \ | |
215 | } | |
216 | ||
217 | #define __GLX_SWAP_REPLY_HEADER() \ | |
218 | __GLX_SWAP_SHORT(&__glXReply.sequenceNumber); \ | |
219 | __GLX_SWAP_INT(&__glXReply.length); | |
220 | ||
221 | #define __GLX_SWAP_REPLY_RETVAL() \ | |
222 | __GLX_SWAP_INT(&__glXReply.retval) | |
223 | ||
224 | #define __GLX_SWAP_REPLY_SIZE() \ | |
225 | __GLX_SWAP_INT(&__glXReply.size) | |
226 | ||
227 | #endif /* !__GLX_unpack_h__ */ |