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 56extern void __glXMemInit(void); 57 58extern 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, (char *)&__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 < 0) return BadLength; \ 87 else if ((size) > sizeof(answerBuffer)) { \ 88 int bump; \ 89 if ((cl)->returnBufSize < (size)+(align)) { \ 90 (cl)->returnBuf = (GLbyte*)realloc((cl)->returnBuf, \ 91 (size)+(align)); \ 92 if (!(cl)->returnBuf) { \ 93 return BadAlloc; \ 94 } \ 95 (cl)->returnBufSize = (size)+(align); \ 96 } \ 97 res = (char*)cl->returnBuf; \ 98 bump = (long)(res) % (align); \ 99 if (bump) res += (align) - (bump); \ 100 } else { \ 101 res = (char *)answerBuffer; \ 102 } 103 104#define __GLX_PUT_BYTE() \ 105 *(GLbyte *)&__glXReply.pad3 = *(GLbyte *)answer 106 107#define __GLX_PUT_SHORT() \ 108 *(GLshort *)&__glXReply.pad3 = *(GLshort *)answer 109 110#define __GLX_PUT_INT() \ 111 *(GLint *)&__glXReply.pad3 = *(GLint *)answer 112 113#define __GLX_PUT_FLOAT() \ 114 *(GLfloat *)&__glXReply.pad3 = *(GLfloat *)answer 115 116#define __GLX_PUT_DOUBLE() \ 117 *(GLdouble *)&__glXReply.pad3 = *(GLdouble *)answer 118 119#define __GLX_SEND_BYTE_ARRAY(len) \ 120 WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT8), (char *)answer) 121 122#define __GLX_SEND_SHORT_ARRAY(len) \ 123 WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), (char *)answer) 124 125#define __GLX_SEND_INT_ARRAY(len) \ 126 WriteToClient(client, (len)*__GLX_SIZE_INT32, (char *)answer) 127 128#define __GLX_SEND_FLOAT_ARRAY(len) \ 129 WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, (char *)answer) 130 131#define __GLX_SEND_DOUBLE_ARRAY(len) \ 132 WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, (char *)answer) 133 134 135#define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) 136#define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) 137#define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len) 138#define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len) 139 140/* 141** PERFORMANCE NOTE: 142** Machine dependent optimizations abound here; these swapping macros can 143** conceivably be replaced with routines that do the job faster. 144*/ 145#define __GLX_DECLARE_SWAP_VARIABLES \ 146 GLbyte sw 147 148#define __GLX_DECLARE_SWAP_ARRAY_VARIABLES \ 149 GLbyte *swapPC; \ 150 GLbyte *swapEnd 151 152 153#define __GLX_SWAP_INT(pc) \ 154 sw = ((GLbyte *)(pc))[0]; \ 155 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ 156 ((GLbyte *)(pc))[3] = sw; \ 157 sw = ((GLbyte *)(pc))[1]; \ 158 ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ 159 ((GLbyte *)(pc))[2] = sw; 160 161#define __GLX_SWAP_SHORT(pc) \ 162 sw = ((GLbyte *)(pc))[0]; \ 163 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \ 164 ((GLbyte *)(pc))[1] = sw; 165 166#define __GLX_SWAP_DOUBLE(pc) \ 167 sw = ((GLbyte *)(pc))[0]; \ 168 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \ 169 ((GLbyte *)(pc))[7] = sw; \ 170 sw = ((GLbyte *)(pc))[1]; \ 171 ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \ 172 ((GLbyte *)(pc))[6] = sw; \ 173 sw = ((GLbyte *)(pc))[2]; \ 174 ((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \ 175 ((GLbyte *)(pc))[5] = sw; \ 176 sw = ((GLbyte *)(pc))[3]; \ 177 ((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \ 178 ((GLbyte *)(pc))[4] = sw; 179 180#define __GLX_SWAP_FLOAT(pc) \ 181 sw = ((GLbyte *)(pc))[0]; \ 182 ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ 183 ((GLbyte *)(pc))[3] = sw; \ 184 sw = ((GLbyte *)(pc))[1]; \ 185 ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ 186 ((GLbyte *)(pc))[2] = sw; 187 188#define __GLX_SWAP_INT_ARRAY(pc, count) \ 189 swapPC = ((GLbyte *)(pc)); \ 190 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\ 191 while (swapPC < swapEnd) { \ 192 __GLX_SWAP_INT(swapPC); \ 193 swapPC += __GLX_SIZE_INT32; \ 194 } 195 196#define __GLX_SWAP_SHORT_ARRAY(pc, count) \ 197 swapPC = ((GLbyte *)(pc)); \ 198 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\ 199 while (swapPC < swapEnd) { \ 200 __GLX_SWAP_SHORT(swapPC); \ 201 swapPC += __GLX_SIZE_INT16; \ 202 } 203 204#define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \ 205 swapPC = ((GLbyte *)(pc)); \ 206 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\ 207 while (swapPC < swapEnd) { \ 208 __GLX_SWAP_DOUBLE(swapPC); \ 209 swapPC += __GLX_SIZE_FLOAT64; \ 210 } 211 212#define __GLX_SWAP_FLOAT_ARRAY(pc, count) \ 213 swapPC = ((GLbyte *)(pc)); \ 214 swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\ 215 while (swapPC < swapEnd) { \ 216 __GLX_SWAP_FLOAT(swapPC); \ 217 swapPC += __GLX_SIZE_FLOAT32; \ 218 } 219 220#define __GLX_SWAP_REPLY_HEADER() \ 221 __GLX_SWAP_SHORT(&__glXReply.sequenceNumber); \ 222 __GLX_SWAP_INT(&__glXReply.length); 223 224#define __GLX_SWAP_REPLY_RETVAL() \ 225 __GLX_SWAP_INT(&__glXReply.retval) 226 227#define __GLX_SWAP_REPLY_SIZE() \ 228 __GLX_SWAP_INT(&__glXReply.size) 229 230#endif /* !__GLX_unpack_h__ */ 231 232 233 234 235 236