| 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__ */ |