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 52extern void __glXMemInit(void); 53 54extern 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, (char *)&__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), (char *)answer) 116 117#define __GLX_SEND_SHORT_ARRAY(len) \ 118 WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), (char *)answer) 119 120#define __GLX_SEND_INT_ARRAY(len) \ 121 WriteToClient(client, (len)*__GLX_SIZE_INT32, (char *)answer) 122 123#define __GLX_SEND_FLOAT_ARRAY(len) \ 124 WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, (char *)answer) 125 126#define __GLX_SEND_DOUBLE_ARRAY(len) \ 127 WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, (char *)answer) 128 129 130#define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) 131#define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) 132#define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len) 133#define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len) 134 135/* 136** PERFORMANCE NOTE: 137** Machine dependent optimizations abound here; these swapping macros can 138** conceivably be replaced with routines that do the job faster. 139*/ 140#define __GLX_DECLARE_SWAP_VARIABLES \ 141 GLbyte sw 142 143#define __GLX_DECLARE_SWAP_ARRAY_VARIABLES \ 144 GLbyte *swapPC; \ 145 GLbyte *swapEnd 146 147 148#define __GLX_SWAP_INT(pc) \ 149 sw = ((GLbyte *)(pc))[0]; \ 150 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ 151 ((GLbyte *)(pc))[3] = sw; \ 152 sw = ((GLbyte *)(pc))[1]; \ 153 ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ 154 ((GLbyte *)(pc))[2] = sw; 155 156#define __GLX_SWAP_SHORT(pc) \ 157 sw = ((GLbyte *)(pc))[0]; \ 158 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \ 159 ((GLbyte *)(pc))[1] = sw; 160 161#define __GLX_SWAP_DOUBLE(pc) \ 162 sw = ((GLbyte *)(pc))[0]; \ 163 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \ 164 ((GLbyte *)(pc))[7] = sw; \ 165 sw = ((GLbyte *)(pc))[1]; \ 166 ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \ 167 ((GLbyte *)(pc))[6] = sw; \ 168 sw = ((GLbyte *)(pc))[2]; \ 169 ((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \ 170 ((GLbyte *)(pc))[5] = sw; \ 171 sw = ((GLbyte *)(pc))[3]; \ 172 ((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \ 173 ((GLbyte *)(pc))[4] = sw; 174 175#define __GLX_SWAP_FLOAT(pc) \ 176 sw = ((GLbyte *)(pc))[0]; \ 177 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ 178 ((GLbyte *)(pc))[3] = sw; \ 179 sw = ((GLbyte *)(pc))[1]; \ 180 ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ 181 ((GLbyte *)(pc))[2] = sw; 182 183#define __GLX_SWAP_INT_ARRAY(pc, count) \ 184 swapPC = ((GLbyte *)(pc)); \ 185 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\ 186 while (swapPC < swapEnd) { \ 187 __GLX_SWAP_INT(swapPC); \ 188 swapPC += __GLX_SIZE_INT32; \ 189 } 190 191#define __GLX_SWAP_SHORT_ARRAY(pc, count) \ 192 swapPC = ((GLbyte *)(pc)); \ 193 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\ 194 while (swapPC < swapEnd) { \ 195 __GLX_SWAP_SHORT(swapPC); \ 196 swapPC += __GLX_SIZE_INT16; \ 197 } 198 199#define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \ 200 swapPC = ((GLbyte *)(pc)); \ 201 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\ 202 while (swapPC < swapEnd) { \ 203 __GLX_SWAP_DOUBLE(swapPC); \ 204 swapPC += __GLX_SIZE_FLOAT64; \ 205 } 206 207#define __GLX_SWAP_FLOAT_ARRAY(pc, count) \ 208 swapPC = ((GLbyte *)(pc)); \ 209 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\ 210 while (swapPC < swapEnd) { \ 211 __GLX_SWAP_FLOAT(swapPC); \ 212 swapPC += __GLX_SIZE_FLOAT32; \ 213 } 214 215#define __GLX_SWAP_REPLY_HEADER() \ 216 __GLX_SWAP_SHORT(&__glXReply.sequenceNumber); \ 217 __GLX_SWAP_INT(&__glXReply.length); 218 219#define __GLX_SWAP_REPLY_RETVAL() \ 220 __GLX_SWAP_INT(&__glXReply.retval) 221 222#define __GLX_SWAP_REPLY_SIZE() \ 223 __GLX_SWAP_INT(&__glXReply.size) 224 225#endif /* !__GLX_unpack_h__ */ 226 227 228 229 230 231