| 1 | /* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED */ |
| 2 | /* |
| 3 | * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) |
| 4 | * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice including the dates of first publication and |
| 14 | * either this permission notice or a reference to |
| 15 | * http://oss.sgi.com/projects/FreeB/ |
| 16 | * shall be included in all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 21 | * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 22 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| 23 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 24 | * SOFTWARE. |
| 25 | * |
| 26 | * Except as contained in this notice, the name of Silicon Graphics, Inc. |
| 27 | * shall not be used in advertising or otherwise to promote the sale, use or |
| 28 | * other dealings in this Software without prior written authorization from |
| 29 | * Silicon Graphics, Inc. |
| 30 | */ |
| 31 | |
| 32 | #ifdef HAVE_DMX_CONFIG_H |
| 33 | #include <dmx-config.h> |
| 34 | #endif |
| 35 | |
| 36 | #include "dmx.h" |
| 37 | #include "dmxwindow.h" |
| 38 | #include "dmxpixmap.h" |
| 39 | #include "dmxfont.h" |
| 40 | #include "dmxcb.h" |
| 41 | |
| 42 | #include "glxserver.h" |
| 43 | #include "glxext.h" |
| 44 | #include "g_disptab.h" |
| 45 | /* #include "g_disptab_EXT.h" */ |
| 46 | #include "unpack.h" |
| 47 | #include "glxutil.h" |
| 48 | |
| 49 | #include "GL/glxproto.h" |
| 50 | |
| 51 | #ifdef PANORAMIX |
| 52 | #include "panoramiXsrv.h" |
| 53 | #endif |
| 54 | |
| 55 | /* |
| 56 | * GetReqSingle - this is the equivalent of GetReq macro |
| 57 | * from Xlibint.h but it does not set the reqType field (the opcode). |
| 58 | * this is because the GL single opcodes has different naming convension |
| 59 | * the other X opcodes (ie. X_GLsop_GetFloatv). |
| 60 | */ |
| 61 | #if (defined(__STDC__) && !defined(UNIXCPP)) || defined(ANSICPP) |
| 62 | #define GetReqSingle(name, req) \ |
| 63 | WORD64ALIGN\ |
| 64 | if ((dpy->bufptr + SIZEOF(x##name##Req)) > dpy->bufmax)\ |
| 65 | _XFlush(dpy);\ |
| 66 | req = (x##name##Req *)(dpy->last_req = dpy->bufptr);\ |
| 67 | req->length = (SIZEOF(x##name##Req))>>2;\ |
| 68 | dpy->bufptr += SIZEOF(x##name##Req);\ |
| 69 | dpy->request++ |
| 70 | |
| 71 | #else /* non-ANSI C uses empty comment instead of "##" for token concatenation */ |
| 72 | #define GetReqSingle(name, req) \ |
| 73 | WORD64ALIGN\ |
| 74 | if ((dpy->bufptr + SIZEOF(x/**/name/**/Req)) > dpy->bufmax)\ |
| 75 | _XFlush(dpy);\ |
| 76 | req = (x/**/name/**/Req *)(dpy->last_req = dpy->bufptr);\ |
| 77 | req->length = (SIZEOF(x/**/name/**/Req))>>2;\ |
| 78 | dpy->bufptr += SIZEOF(x/**/name/**/Req);\ |
| 79 | dpy->request++ |
| 80 | #endif |
| 81 | |
| 82 | #define X_GLXSingle 0 /* needed by GetReqExtra */ |
| 83 | |
| 84 | extern Display *GetBackEndDisplay(__GLXclientState * cl, int s); |
| 85 | extern int GetCurrentBackEndTag(__GLXclientState * cl, GLXContextTag tag, |
| 86 | int s); |
| 87 | |
| 88 | static int swap_vec_element_size = 0; |
| 89 | |
| 90 | static void |
| 91 | SendSwappedReply(ClientPtr client, |
| 92 | xGLXSingleReply * reply, char *buf, int buf_size) |
| 93 | { |
| 94 | __GLX_DECLARE_SWAP_VARIABLES; |
| 95 | __GLX_SWAP_SHORT(&reply->sequenceNumber); |
| 96 | __GLX_SWAP_INT(&reply->length); |
| 97 | __GLX_SWAP_INT(&reply->retval); |
| 98 | __GLX_SWAP_INT(&reply->size); |
| 99 | |
| 100 | if ((buf_size == 0) && (swap_vec_element_size > 0)) { |
| 101 | /* |
| 102 | * the reply has single component - need to swap pad3 |
| 103 | */ |
| 104 | if (swap_vec_element_size == 2) { |
| 105 | __GLX_SWAP_SHORT(&reply->pad3); |
| 106 | } |
| 107 | else if (swap_vec_element_size == 4) { |
| 108 | __GLX_SWAP_INT(&reply->pad3); |
| 109 | __GLX_SWAP_INT(&reply->pad4); /* some requests use also pad4 |
| 110 | * i.e GetConvolutionFilter |
| 111 | */ |
| 112 | } |
| 113 | else if (swap_vec_element_size == 8) { |
| 114 | __GLX_SWAP_DOUBLE(&reply->pad3); |
| 115 | } |
| 116 | } |
| 117 | else if ((buf_size > 0) && (swap_vec_element_size > 0)) { |
| 118 | /* |
| 119 | * the reply has vector of elements which needs to be swapped |
| 120 | */ |
| 121 | int vsize = buf_size / swap_vec_element_size; |
| 122 | char *p = buf; |
| 123 | int i; |
| 124 | |
| 125 | for (i = 0; i < vsize; i++) { |
| 126 | if (swap_vec_element_size == 2) { |
| 127 | __GLX_SWAP_SHORT(p); |
| 128 | } |
| 129 | else if (swap_vec_element_size == 4) { |
| 130 | __GLX_SWAP_INT(p); |
| 131 | } |
| 132 | else if (swap_vec_element_size == 8) { |
| 133 | __GLX_SWAP_DOUBLE(p); |
| 134 | } |
| 135 | |
| 136 | p += swap_vec_element_size; |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * swap pad words as well - for case that some single reply uses |
| 141 | * them as well |
| 142 | */ |
| 143 | __GLX_SWAP_INT(&reply->pad3); |
| 144 | __GLX_SWAP_INT(&reply->pad4); |
| 145 | __GLX_SWAP_INT(&reply->pad5); |
| 146 | __GLX_SWAP_INT(&reply->pad6); |
| 147 | |
| 148 | } |
| 149 | |
| 150 | WriteToClient(client, sizeof(xGLXSingleReply), reply); |
| 151 | if (buf_size > 0) |
| 152 | WriteToClient(client, buf_size, buf); |
| 153 | |
| 154 | } |
| 155 | |
| 156 | int |
| 157 | __glXForwardSingleReq(__GLXclientState * cl, GLbyte * pc) |
| 158 | { |
| 159 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 160 | xGLXSingleReq *be_req; |
| 161 | __GLXcontext *glxc; |
| 162 | int from_screen = 0; |
| 163 | int to_screen = 0; |
| 164 | int buf_size; |
| 165 | int s; |
| 166 | |
| 167 | glxc = __glXLookupContextByTag(cl, req->contextTag); |
| 168 | if (!glxc) { |
| 169 | return 0; |
| 170 | } |
| 171 | from_screen = to_screen = glxc->pScreen->myNum; |
| 172 | |
| 173 | #ifdef PANORAMIX |
| 174 | if (!noPanoramiXExtension) { |
| 175 | from_screen = 0; |
| 176 | to_screen = screenInfo.numScreens - 1; |
| 177 | } |
| 178 | #endif |
| 179 | |
| 180 | pc += sz_xGLXSingleReq; |
| 181 | buf_size = (req->length << 2) - sz_xGLXSingleReq; |
| 182 | |
| 183 | /* |
| 184 | * just forward the request to back-end server(s) |
| 185 | */ |
| 186 | for (s = from_screen; s <= to_screen; s++) { |
| 187 | DMXScreenInfo *dmxScreen = &dmxScreens[s]; |
| 188 | Display *dpy = GetBackEndDisplay(cl, s); |
| 189 | |
| 190 | LockDisplay(dpy); |
| 191 | GetReqSingle(GLXSingle, be_req); |
| 192 | be_req->reqType = dmxScreen->glxMajorOpcode; |
| 193 | be_req->glxCode = req->glxCode; |
| 194 | be_req->length = req->length; |
| 195 | be_req->contextTag = GetCurrentBackEndTag(cl, req->contextTag, s); |
| 196 | if (buf_size > 0) |
| 197 | _XSend(dpy, (const char *) pc, buf_size); |
| 198 | UnlockDisplay(dpy); |
| 199 | SyncHandle(); |
| 200 | |
| 201 | if (req->glxCode == X_GLsop_Flush) { |
| 202 | XFlush(dpy); |
| 203 | } |
| 204 | |
| 205 | } |
| 206 | |
| 207 | return Success; |
| 208 | } |
| 209 | |
| 210 | int |
| 211 | __glXForwardPipe0WithReply(__GLXclientState * cl, GLbyte * pc) |
| 212 | { |
| 213 | ClientPtr client = cl->client; |
| 214 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 215 | xGLXSingleReq *be_req; |
| 216 | xGLXSingleReply reply; |
| 217 | xGLXSingleReply be_reply; |
| 218 | __GLXcontext *glxc; |
| 219 | int buf_size; |
| 220 | char *be_buf = NULL; |
| 221 | int be_buf_size; |
| 222 | DMXScreenInfo *dmxScreen; |
| 223 | Display *dpy; |
| 224 | |
| 225 | glxc = __glXLookupContextByTag(cl, req->contextTag); |
| 226 | if (!glxc) { |
| 227 | return __glXBadContext; |
| 228 | } |
| 229 | |
| 230 | pc += sz_xGLXSingleReq; |
| 231 | buf_size = (req->length << 2) - sz_xGLXSingleReq; |
| 232 | |
| 233 | dmxScreen = &dmxScreens[glxc->pScreen->myNum]; |
| 234 | dpy = GetBackEndDisplay(cl, glxc->pScreen->myNum); |
| 235 | |
| 236 | /* |
| 237 | * send the request to the first back-end server |
| 238 | */ |
| 239 | LockDisplay(dpy); |
| 240 | GetReqSingle(GLXSingle, be_req); |
| 241 | be_req->reqType = dmxScreen->glxMajorOpcode; |
| 242 | be_req->glxCode = req->glxCode; |
| 243 | be_req->length = req->length; |
| 244 | be_req->contextTag = |
| 245 | GetCurrentBackEndTag(cl, req->contextTag, glxc->pScreen->myNum); |
| 246 | if (buf_size > 0) |
| 247 | _XSend(dpy, (const char *) pc, buf_size); |
| 248 | |
| 249 | /* |
| 250 | * get the reply from the back-end server |
| 251 | */ |
| 252 | _XReply(dpy, (xReply *) &be_reply, 0, False); |
| 253 | be_buf_size = be_reply.length << 2; |
| 254 | if (be_buf_size > 0) { |
| 255 | be_buf = (char *) malloc(be_buf_size); |
| 256 | if (be_buf) { |
| 257 | _XRead(dpy, be_buf, be_buf_size); |
| 258 | } |
| 259 | else { |
| 260 | /* Throw data on the floor */ |
| 261 | _XEatDataWords(dpy, be_reply.length); |
| 262 | return BadAlloc; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | UnlockDisplay(dpy); |
| 267 | SyncHandle(); |
| 268 | |
| 269 | /* |
| 270 | * send the reply to the client |
| 271 | */ |
| 272 | reply = (xGLXSingleReply) { |
| 273 | .type = X_Reply, |
| 274 | .sequenceNumber = client->sequence, |
| 275 | .length = be_reply.length, |
| 276 | .retval = be_reply.retval, |
| 277 | .size = be_reply.size, |
| 278 | .pad3 = be_reply.pad3, |
| 279 | .pad4 = be_reply.pad4 |
| 280 | }; |
| 281 | |
| 282 | if (client->swapped) { |
| 283 | SendSwappedReply(client, &reply, be_buf, be_buf_size); |
| 284 | } |
| 285 | else { |
| 286 | WriteToClient(client, sizeof(xGLXSingleReply), &reply); |
| 287 | if (be_buf_size > 0) |
| 288 | WriteToClient(client, be_buf_size, be_buf); |
| 289 | } |
| 290 | |
| 291 | if (be_buf_size > 0) |
| 292 | free(be_buf); |
| 293 | |
| 294 | return Success; |
| 295 | } |
| 296 | |
| 297 | int |
| 298 | __glXForwardAllWithReply(__GLXclientState * cl, GLbyte * pc) |
| 299 | { |
| 300 | ClientPtr client = cl->client; |
| 301 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 302 | xGLXSingleReq *be_req; |
| 303 | xGLXSingleReply reply; |
| 304 | xGLXSingleReply be_reply; |
| 305 | __GLXcontext *glxc; |
| 306 | int buf_size; |
| 307 | char *be_buf = NULL; |
| 308 | int be_buf_size = 0; |
| 309 | int from_screen = 0; |
| 310 | int to_screen = 0; |
| 311 | int s; |
| 312 | |
| 313 | DMXScreenInfo *dmxScreen; |
| 314 | Display *dpy; |
| 315 | |
| 316 | glxc = __glXLookupContextByTag(cl, req->contextTag); |
| 317 | if (!glxc) { |
| 318 | return 0; |
| 319 | } |
| 320 | from_screen = to_screen = glxc->pScreen->myNum; |
| 321 | |
| 322 | #ifdef PANORAMIX |
| 323 | if (!noPanoramiXExtension) { |
| 324 | from_screen = 0; |
| 325 | to_screen = screenInfo.numScreens - 1; |
| 326 | } |
| 327 | #endif |
| 328 | |
| 329 | pc += sz_xGLXSingleReq; |
| 330 | buf_size = (req->length << 2) - sz_xGLXSingleReq; |
| 331 | |
| 332 | /* |
| 333 | * send the request to the first back-end server(s) |
| 334 | */ |
| 335 | for (s = to_screen; s >= from_screen; s--) { |
| 336 | dmxScreen = &dmxScreens[s]; |
| 337 | dpy = GetBackEndDisplay(cl, s); |
| 338 | |
| 339 | LockDisplay(dpy); |
| 340 | GetReqSingle(GLXSingle, be_req); |
| 341 | be_req->reqType = dmxScreen->glxMajorOpcode; |
| 342 | be_req->glxCode = req->glxCode; |
| 343 | be_req->length = req->length; |
| 344 | be_req->contextTag = GetCurrentBackEndTag(cl, req->contextTag, s); |
| 345 | if (buf_size > 0) |
| 346 | _XSend(dpy, (const char *) pc, buf_size); |
| 347 | |
| 348 | /* |
| 349 | * get the reply from the back-end server |
| 350 | */ |
| 351 | _XReply(dpy, (xReply *) &be_reply, 0, False); |
| 352 | if (s == from_screen) { |
| 353 | /* Save data from last reply to send on to client */ |
| 354 | be_buf_size = be_reply.length << 2; |
| 355 | if (be_buf_size > 0) { |
| 356 | be_buf = malloc(be_buf_size); |
| 357 | if (be_buf) { |
| 358 | _XRead(dpy, be_buf, be_buf_size); |
| 359 | } |
| 360 | else { |
| 361 | /* Throw data on the floor */ |
| 362 | _XEatDataWords(dpy, be_reply.length); |
| 363 | return BadAlloc; |
| 364 | } |
| 365 | } |
| 366 | } |
| 367 | else { |
| 368 | /* Just discard data from all replies before the last one */ |
| 369 | if (be_reply.length > 0) |
| 370 | _XEatDataWords(dpy, be_reply.length); |
| 371 | } |
| 372 | |
| 373 | UnlockDisplay(dpy); |
| 374 | SyncHandle(); |
| 375 | } |
| 376 | |
| 377 | /* |
| 378 | * send the reply to the client |
| 379 | */ |
| 380 | reply = (xGLXSingleReply) { |
| 381 | .type = X_Reply, |
| 382 | .sequenceNumber = client->sequence, |
| 383 | .length = be_reply.length, |
| 384 | .retval = be_reply.retval, |
| 385 | .size = be_reply.size, |
| 386 | .pad3 = be_reply.pad3, |
| 387 | .pad4 = be_reply.pad4 |
| 388 | }; |
| 389 | |
| 390 | if (client->swapped) { |
| 391 | SendSwappedReply(client, &reply, be_buf, be_buf_size); |
| 392 | } |
| 393 | else { |
| 394 | WriteToClient(client, sizeof(xGLXSingleReply), &reply); |
| 395 | if (be_buf_size > 0) |
| 396 | WriteToClient(client, be_buf_size, be_buf); |
| 397 | } |
| 398 | |
| 399 | if (be_buf_size > 0) |
| 400 | free(be_buf); |
| 401 | |
| 402 | return Success; |
| 403 | } |
| 404 | |
| 405 | int |
| 406 | __glXForwardSingleReqSwap(__GLXclientState * cl, GLbyte * pc) |
| 407 | { |
| 408 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 409 | |
| 410 | __GLX_DECLARE_SWAP_VARIABLES; |
| 411 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 412 | |
| 413 | __GLX_SWAP_SHORT(&req->length); |
| 414 | __GLX_SWAP_INT(&req->contextTag); |
| 415 | |
| 416 | swap_vec_element_size = 0; |
| 417 | |
| 418 | /* |
| 419 | * swap extra data in request - assuming all data |
| 420 | * (if available) are arrays of 4 bytes components ! |
| 421 | */ |
| 422 | if (req->length > sz_xGLXSingleReq / 4) { |
| 423 | int *data = (int *) (req + 1); |
| 424 | int count = req->length - sz_xGLXSingleReq / 4; |
| 425 | |
| 426 | __GLX_SWAP_INT_ARRAY(data, count); |
| 427 | } |
| 428 | |
| 429 | return (__glXForwardSingleReq(cl, pc)); |
| 430 | } |
| 431 | |
| 432 | int |
| 433 | __glXForwardPipe0WithReplySwap(__GLXclientState * cl, GLbyte * pc) |
| 434 | { |
| 435 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 436 | |
| 437 | __GLX_DECLARE_SWAP_VARIABLES; |
| 438 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 439 | |
| 440 | __GLX_SWAP_SHORT(&req->length); |
| 441 | __GLX_SWAP_INT(&req->contextTag); |
| 442 | |
| 443 | swap_vec_element_size = 0; |
| 444 | |
| 445 | /* |
| 446 | * swap extra data in request - assuming all data |
| 447 | * (if available) are arrays of 4 bytes components ! |
| 448 | */ |
| 449 | if (req->length > sz_xGLXSingleReq / 4) { |
| 450 | int *data = (int *) (req + 1); |
| 451 | int count = req->length - sz_xGLXSingleReq / 4; |
| 452 | |
| 453 | __GLX_SWAP_INT_ARRAY(data, count); |
| 454 | } |
| 455 | |
| 456 | return (__glXForwardPipe0WithReply(cl, pc)); |
| 457 | } |
| 458 | |
| 459 | int |
| 460 | __glXForwardPipe0WithReplySwapsv(__GLXclientState * cl, GLbyte * pc) |
| 461 | { |
| 462 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 463 | |
| 464 | __GLX_DECLARE_SWAP_VARIABLES; |
| 465 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 466 | |
| 467 | __GLX_SWAP_SHORT(&req->length); |
| 468 | __GLX_SWAP_INT(&req->contextTag); |
| 469 | |
| 470 | swap_vec_element_size = 2; |
| 471 | |
| 472 | /* |
| 473 | * swap extra data in request - assuming all data |
| 474 | * (if available) are arrays of 4 bytes components ! |
| 475 | */ |
| 476 | if (req->length > sz_xGLXSingleReq / 4) { |
| 477 | int *data = (int *) (req + 1); |
| 478 | int count = req->length - sz_xGLXSingleReq / 4; |
| 479 | |
| 480 | __GLX_SWAP_INT_ARRAY(data, count); |
| 481 | } |
| 482 | |
| 483 | return (__glXForwardPipe0WithReply(cl, pc)); |
| 484 | } |
| 485 | |
| 486 | int |
| 487 | __glXForwardPipe0WithReplySwapiv(__GLXclientState * cl, GLbyte * pc) |
| 488 | { |
| 489 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 490 | |
| 491 | __GLX_DECLARE_SWAP_VARIABLES; |
| 492 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 493 | |
| 494 | __GLX_SWAP_SHORT(&req->length); |
| 495 | __GLX_SWAP_INT(&req->contextTag); |
| 496 | |
| 497 | swap_vec_element_size = 4; |
| 498 | |
| 499 | /* |
| 500 | * swap extra data in request - assuming all data |
| 501 | * (if available) are arrays of 4 bytes components ! |
| 502 | */ |
| 503 | if (req->length > sz_xGLXSingleReq / 4) { |
| 504 | int *data = (int *) (req + 1); |
| 505 | int count = req->length - sz_xGLXSingleReq / 4; |
| 506 | |
| 507 | __GLX_SWAP_INT_ARRAY(data, count); |
| 508 | } |
| 509 | |
| 510 | return (__glXForwardPipe0WithReply(cl, pc)); |
| 511 | } |
| 512 | |
| 513 | int |
| 514 | __glXForwardPipe0WithReplySwapdv(__GLXclientState * cl, GLbyte * pc) |
| 515 | { |
| 516 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 517 | |
| 518 | __GLX_DECLARE_SWAP_VARIABLES; |
| 519 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 520 | |
| 521 | __GLX_SWAP_SHORT(&req->length); |
| 522 | __GLX_SWAP_INT(&req->contextTag); |
| 523 | |
| 524 | swap_vec_element_size = 8; |
| 525 | |
| 526 | /* |
| 527 | * swap extra data in request - assuming all data |
| 528 | * (if available) are arrays of 4 bytes components ! |
| 529 | */ |
| 530 | if (req->length > sz_xGLXSingleReq / 4) { |
| 531 | int *data = (int *) (req + 1); |
| 532 | int count = req->length - sz_xGLXSingleReq / 4; |
| 533 | |
| 534 | __GLX_SWAP_INT_ARRAY(data, count); |
| 535 | } |
| 536 | |
| 537 | return (__glXForwardPipe0WithReply(cl, pc)); |
| 538 | } |
| 539 | |
| 540 | int |
| 541 | __glXForwardAllWithReplySwap(__GLXclientState * cl, GLbyte * pc) |
| 542 | { |
| 543 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 544 | |
| 545 | __GLX_DECLARE_SWAP_VARIABLES; |
| 546 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 547 | |
| 548 | __GLX_SWAP_SHORT(&req->length); |
| 549 | __GLX_SWAP_INT(&req->contextTag); |
| 550 | |
| 551 | swap_vec_element_size = 0; |
| 552 | |
| 553 | /* |
| 554 | * swap extra data in request - assuming all data |
| 555 | * (if available) are arrays of 4 bytes components ! |
| 556 | */ |
| 557 | if (req->length > sz_xGLXSingleReq / 4) { |
| 558 | int *data = (int *) (req + 1); |
| 559 | int count = req->length - sz_xGLXSingleReq / 4; |
| 560 | |
| 561 | __GLX_SWAP_INT_ARRAY(data, count); |
| 562 | } |
| 563 | |
| 564 | return (__glXForwardAllWithReply(cl, pc)); |
| 565 | } |
| 566 | |
| 567 | int |
| 568 | __glXForwardAllWithReplySwapsv(__GLXclientState * cl, GLbyte * pc) |
| 569 | { |
| 570 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 571 | |
| 572 | __GLX_DECLARE_SWAP_VARIABLES; |
| 573 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 574 | |
| 575 | __GLX_SWAP_SHORT(&req->length); |
| 576 | __GLX_SWAP_INT(&req->contextTag); |
| 577 | |
| 578 | swap_vec_element_size = 2; |
| 579 | |
| 580 | /* |
| 581 | * swap extra data in request - assuming all data |
| 582 | * (if available) are arrays of 4 bytes components ! |
| 583 | */ |
| 584 | if (req->length > sz_xGLXSingleReq / 4) { |
| 585 | int *data = (int *) (req + 1); |
| 586 | int count = req->length - sz_xGLXSingleReq / 4; |
| 587 | |
| 588 | __GLX_SWAP_INT_ARRAY(data, count); |
| 589 | } |
| 590 | |
| 591 | return (__glXForwardAllWithReply(cl, pc)); |
| 592 | } |
| 593 | |
| 594 | int |
| 595 | __glXForwardAllWithReplySwapiv(__GLXclientState * cl, GLbyte * pc) |
| 596 | { |
| 597 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 598 | |
| 599 | __GLX_DECLARE_SWAP_VARIABLES; |
| 600 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 601 | |
| 602 | __GLX_SWAP_SHORT(&req->length); |
| 603 | __GLX_SWAP_INT(&req->contextTag); |
| 604 | |
| 605 | swap_vec_element_size = 4; |
| 606 | |
| 607 | /* |
| 608 | * swap extra data in request - assuming all data |
| 609 | * (if available) are arrays of 4 bytes components ! |
| 610 | */ |
| 611 | if (req->length > sz_xGLXSingleReq / 4) { |
| 612 | int *data = (int *) (req + 1); |
| 613 | int count = req->length - sz_xGLXSingleReq / 4; |
| 614 | |
| 615 | __GLX_SWAP_INT_ARRAY(data, count); |
| 616 | } |
| 617 | |
| 618 | return (__glXForwardAllWithReply(cl, pc)); |
| 619 | } |
| 620 | |
| 621 | int |
| 622 | __glXForwardAllWithReplySwapdv(__GLXclientState * cl, GLbyte * pc) |
| 623 | { |
| 624 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 625 | |
| 626 | __GLX_DECLARE_SWAP_VARIABLES; |
| 627 | __GLX_DECLARE_SWAP_ARRAY_VARIABLES; |
| 628 | |
| 629 | __GLX_SWAP_SHORT(&req->length); |
| 630 | __GLX_SWAP_INT(&req->contextTag); |
| 631 | |
| 632 | swap_vec_element_size = 8; |
| 633 | |
| 634 | /* |
| 635 | * swap extra data in request - assuming all data |
| 636 | * (if available) are arrays of 4 bytes components ! |
| 637 | */ |
| 638 | if (req->length > sz_xGLXSingleReq / 4) { |
| 639 | int *data = (int *) (req + 1); |
| 640 | int count = req->length - sz_xGLXSingleReq / 4; |
| 641 | |
| 642 | __GLX_SWAP_INT_ARRAY(data, count); |
| 643 | } |
| 644 | |
| 645 | return (__glXForwardAllWithReply(cl, pc)); |
| 646 | } |
| 647 | |
| 648 | static GLint |
| 649 | __glReadPixels_size(GLenum format, GLenum type, GLint w, GLint h, |
| 650 | int *elementbits_return, int *rowbytes_return) |
| 651 | { |
| 652 | GLint elements, esize; |
| 653 | GLint rowsize, padding; |
| 654 | |
| 655 | if (w < 0 || h < 0) { |
| 656 | return -1; |
| 657 | } |
| 658 | switch (format) { |
| 659 | case GL_COLOR_INDEX: |
| 660 | case GL_STENCIL_INDEX: |
| 661 | case GL_DEPTH_COMPONENT: |
| 662 | elements = 1; |
| 663 | break; |
| 664 | case GL_RED: |
| 665 | case GL_GREEN: |
| 666 | case GL_BLUE: |
| 667 | case GL_ALPHA: |
| 668 | case GL_LUMINANCE: |
| 669 | elements = 1; |
| 670 | break; |
| 671 | case GL_LUMINANCE_ALPHA: |
| 672 | elements = 2; |
| 673 | break; |
| 674 | case GL_RGB: |
| 675 | case GL_BGR: |
| 676 | elements = 3; |
| 677 | break; |
| 678 | case GL_RGBA: |
| 679 | case GL_BGRA: |
| 680 | case GL_ABGR_EXT: |
| 681 | elements = 4; |
| 682 | break; |
| 683 | default: |
| 684 | return -1; |
| 685 | } |
| 686 | /* |
| 687 | ** According to the GLX protocol, each row must be padded to a multiple of |
| 688 | ** 4 bytes. 4 bytes also happens to be the default alignment in the pixel |
| 689 | ** store modes of the GL. |
| 690 | */ |
| 691 | switch (type) { |
| 692 | case GL_BITMAP: |
| 693 | if (format == GL_COLOR_INDEX || format == GL_STENCIL_INDEX) { |
| 694 | rowsize = ((w * elements) + 7) / 8; |
| 695 | padding = rowsize % 4; |
| 696 | if (padding) { |
| 697 | rowsize += 4 - padding; |
| 698 | } |
| 699 | if (elementbits_return) |
| 700 | *elementbits_return = elements; |
| 701 | if (rowbytes_return) |
| 702 | *rowbytes_return = rowsize; |
| 703 | return rowsize * h; |
| 704 | } |
| 705 | else { |
| 706 | return -1; |
| 707 | } |
| 708 | case GL_BYTE: |
| 709 | case GL_UNSIGNED_BYTE: |
| 710 | esize = 1; |
| 711 | break; |
| 712 | case GL_UNSIGNED_BYTE_3_3_2: |
| 713 | case GL_UNSIGNED_BYTE_2_3_3_REV: |
| 714 | esize = 1; |
| 715 | elements = 1; |
| 716 | break; |
| 717 | case GL_SHORT: |
| 718 | case GL_UNSIGNED_SHORT: |
| 719 | esize = 2; |
| 720 | break; |
| 721 | case GL_UNSIGNED_SHORT_5_6_5: |
| 722 | case GL_UNSIGNED_SHORT_5_6_5_REV: |
| 723 | case GL_UNSIGNED_SHORT_4_4_4_4: |
| 724 | case GL_UNSIGNED_SHORT_4_4_4_4_REV: |
| 725 | case GL_UNSIGNED_SHORT_5_5_5_1: |
| 726 | case GL_UNSIGNED_SHORT_1_5_5_5_REV: |
| 727 | esize = 2; |
| 728 | elements = 1; |
| 729 | break; |
| 730 | case GL_INT: |
| 731 | case GL_UNSIGNED_INT: |
| 732 | case GL_FLOAT: |
| 733 | esize = 4; |
| 734 | break; |
| 735 | case GL_UNSIGNED_INT_8_8_8_8: |
| 736 | case GL_UNSIGNED_INT_8_8_8_8_REV: |
| 737 | case GL_UNSIGNED_INT_10_10_10_2: |
| 738 | case GL_UNSIGNED_INT_2_10_10_10_REV: |
| 739 | esize = 4; |
| 740 | elements = 1; |
| 741 | break; |
| 742 | default: |
| 743 | return -1; |
| 744 | } |
| 745 | rowsize = w * elements * esize; |
| 746 | padding = rowsize % 4; |
| 747 | if (padding) { |
| 748 | rowsize += 4 - padding; |
| 749 | } |
| 750 | |
| 751 | if (elementbits_return) |
| 752 | *elementbits_return = esize * elements * 8; |
| 753 | if (rowbytes_return) |
| 754 | *rowbytes_return = rowsize; |
| 755 | |
| 756 | return rowsize * h; |
| 757 | } |
| 758 | |
| 759 | static int |
| 760 | intersectRect(int x1, int x2, int y1, int y2, |
| 761 | int X1, int X2, int Y1, int Y2, |
| 762 | int *ix1, int *ix2, int *iy1, int *iy2) |
| 763 | { |
| 764 | int right = (x2 < X2 ? x2 : X2); |
| 765 | int bottom = (y2 < Y2 ? y2 : Y2); |
| 766 | int left = (x1 > X1 ? x1 : X1); |
| 767 | int top = (y1 > Y1 ? y1 : Y1); |
| 768 | int width = right - left + 1; |
| 769 | int height = bottom - top + 1; |
| 770 | |
| 771 | if ((width <= 0) || (height <= 0)) { |
| 772 | *ix1 = *ix2 = *iy1 = *iy2 = 0; |
| 773 | return 0; |
| 774 | } |
| 775 | else { |
| 776 | *ix1 = left; |
| 777 | *ix2 = right; |
| 778 | *iy1 = top; |
| 779 | *iy2 = bottom; |
| 780 | return width * height; |
| 781 | } |
| 782 | |
| 783 | } |
| 784 | |
| 785 | int |
| 786 | __glXDisp_ReadPixels(__GLXclientState * cl, GLbyte * pc) |
| 787 | { |
| 788 | xGLXSingleReq *req = (xGLXSingleReq *) pc; |
| 789 | xGLXSingleReq *be_req; |
| 790 | xGLXReadPixelsReply reply; |
| 791 | xGLXReadPixelsReply be_reply; |
| 792 | GLbyte *be_pc; |
| 793 | GLint x, y; |
| 794 | GLsizei width, height; |
| 795 | GLenum format, type; |
| 796 | GLboolean swapBytes, lsbFirst; |
| 797 | ClientPtr client = cl->client; |
| 798 | DrawablePtr pDraw; |
| 799 | __GLXcontext *glxc; |
| 800 | int from_screen = 0; |
| 801 | int to_screen = 0; |
| 802 | char *buf; |
| 803 | int buf_size; |
| 804 | int s; |
| 805 | int win_x1, win_x2; |
| 806 | int win_y1, win_y2; |
| 807 | int ebits, rowsize; |
| 808 | |
| 809 | __GLX_DECLARE_SWAP_VARIABLES; |
| 810 | |
| 811 | if (client->swapped) { |
| 812 | __GLX_SWAP_INT(&req->contextTag); |
| 813 | } |
| 814 | |
| 815 | glxc = __glXLookupContextByTag(cl, req->contextTag); |
| 816 | if (!glxc) { |
| 817 | return 0; |
| 818 | } |
| 819 | from_screen = to_screen = glxc->pScreen->myNum; |
| 820 | |
| 821 | #ifdef PANORAMIX |
| 822 | if (!noPanoramiXExtension) { |
| 823 | from_screen = 0; |
| 824 | to_screen = screenInfo.numScreens - 1; |
| 825 | } |
| 826 | #endif |
| 827 | |
| 828 | pc += sz_xGLXSingleReq; |
| 829 | x = *(GLint *) (pc + 0); |
| 830 | y = *(GLint *) (pc + 4); |
| 831 | width = *(GLsizei *) (pc + 8); |
| 832 | height = *(GLsizei *) (pc + 12); |
| 833 | format = *(GLenum *) (pc + 16); |
| 834 | type = *(GLenum *) (pc + 20); |
| 835 | swapBytes = *(GLboolean *) (pc + 24); |
| 836 | lsbFirst = *(GLboolean *) (pc + 25); |
| 837 | |
| 838 | if (client->swapped) { |
| 839 | __GLX_SWAP_INT(&x); |
| 840 | __GLX_SWAP_INT(&y); |
| 841 | __GLX_SWAP_INT(&width); |
| 842 | __GLX_SWAP_INT(&height); |
| 843 | __GLX_SWAP_INT(&format); |
| 844 | __GLX_SWAP_INT(&type); |
| 845 | swapBytes = !swapBytes; |
| 846 | } |
| 847 | |
| 848 | buf_size = |
| 849 | __glReadPixels_size(format, type, width, height, &ebits, &rowsize); |
| 850 | if (buf_size > 0) { |
| 851 | buf = (char *) malloc(buf_size); |
| 852 | if (!buf) { |
| 853 | return BadAlloc; |
| 854 | } |
| 855 | } |
| 856 | else { |
| 857 | buf_size = 0; |
| 858 | buf = NULL; |
| 859 | } |
| 860 | |
| 861 | if (buf_size > 0) { |
| 862 | /* |
| 863 | * Get the current drawable this context is bound to |
| 864 | */ |
| 865 | pDraw = __glXLookupDrawableByTag(cl, req->contextTag); |
| 866 | win_x1 = pDraw->x + x; |
| 867 | win_x2 = win_x1 + width - 1; |
| 868 | win_y1 = (dmxGlobalHeight - pDraw->y - pDraw->height) + y; |
| 869 | win_y2 = win_y1 + height - 1; |
| 870 | if (pDraw->type != DRAWABLE_WINDOW) { |
| 871 | from_screen = to_screen = 0; |
| 872 | } |
| 873 | |
| 874 | for (s = from_screen; s <= to_screen; s++) { |
| 875 | DMXScreenInfo *dmxScreen = &dmxScreens[s]; |
| 876 | Display *dpy = GetBackEndDisplay(cl, s); |
| 877 | int scr_x1 = dmxScreen->rootXOrigin; |
| 878 | int scr_x2 = dmxScreen->rootXOrigin + dmxScreen->scrnWidth - 1; |
| 879 | int scr_y1 = dmxScreen->rootYOrigin; |
| 880 | int scr_y2 = dmxScreen->rootYOrigin + dmxScreen->scrnHeight - 1; |
| 881 | int wx1, wx2, wy1, wy2; |
| 882 | int sx, sy, sw, sh; |
| 883 | int npixels; |
| 884 | |
| 885 | /* |
| 886 | * find the window portion that is on the current screen |
| 887 | */ |
| 888 | if (pDraw->type == DRAWABLE_WINDOW) { |
| 889 | npixels = intersectRect(scr_x1, scr_x2, scr_y1, scr_y2, |
| 890 | win_x1, win_x2, win_y1, win_y2, |
| 891 | &wx1, &wx2, &wy1, &wy2); |
| 892 | } |
| 893 | else { |
| 894 | wx1 = win_x1; |
| 895 | wx2 = win_x2; |
| 896 | wy1 = win_y1; |
| 897 | wy2 = win_y2; |
| 898 | npixels = (wx2 - wx1 + 1) * (wy2 - wy1 + 1); |
| 899 | } |
| 900 | |
| 901 | if (npixels > 0) { |
| 902 | |
| 903 | /* send the request to the back-end server */ |
| 904 | LockDisplay(dpy); |
| 905 | GetReqExtra(GLXSingle, __GLX_PAD(26), be_req); |
| 906 | be_req->reqType = dmxScreen->glxMajorOpcode; |
| 907 | be_req->glxCode = X_GLsop_ReadPixels; |
| 908 | be_req->contextTag = |
| 909 | GetCurrentBackEndTag(cl, req->contextTag, s); |
| 910 | be_pc = ((GLbyte *) (be_req) + sz_xGLXSingleReq); |
| 911 | |
| 912 | sx = wx1 - pDraw->x; |
| 913 | sy = wy1 - (dmxGlobalHeight - pDraw->y - pDraw->height); |
| 914 | sw = (wx2 - wx1 + 1); |
| 915 | sh = (wy2 - wy1 + 1); |
| 916 | |
| 917 | *(GLint *) (be_pc + 0) = sx; /* x */ |
| 918 | *(GLint *) (be_pc + 4) = sy; /* y */ |
| 919 | *(GLsizei *) (be_pc + 8) = sw; /* width */ |
| 920 | *(GLsizei *) (be_pc + 12) = sh; /* height */ |
| 921 | *(GLenum *) (be_pc + 16) = format; |
| 922 | *(GLenum *) (be_pc + 20) = type; |
| 923 | *(GLboolean *) (be_pc + 24) = swapBytes; |
| 924 | *(GLboolean *) (be_pc + 25) = lsbFirst; |
| 925 | |
| 926 | _XReply(dpy, (xReply *) &be_reply, 0, False); |
| 927 | |
| 928 | if (be_reply.length > 0) { |
| 929 | char *be_buf; |
| 930 | int be_buf_size = be_reply.length << 2; |
| 931 | |
| 932 | be_buf = (char *) malloc(be_buf_size); |
| 933 | if (be_buf) { |
| 934 | _XRead(dpy, be_buf, be_buf_size); |
| 935 | |
| 936 | /* copy pixels data to the right location of the */ |
| 937 | /* reply buffer */ |
| 938 | if (type != GL_BITMAP) { |
| 939 | int pbytes = ebits / 8; |
| 940 | char *dst = |
| 941 | buf + (sy - y) * rowsize + (sx - x) * pbytes; |
| 942 | char *src = be_buf; |
| 943 | int pad = (pbytes * sw) % 4; |
| 944 | int r; |
| 945 | |
| 946 | for (r = 0; r < sh; r++) { |
| 947 | memcpy(dst, src, pbytes * sw); |
| 948 | dst += rowsize; |
| 949 | src += (pbytes * sw + (pad ? 4 - pad : 0)); |
| 950 | } |
| 951 | } |
| 952 | else { |
| 953 | /* this is a GL_BITMAP pixel type, should copy bits */ |
| 954 | int r; |
| 955 | int src_rowsize = bits_to_bytes(sw * ebits); |
| 956 | int src_pad = src_rowsize % 4; |
| 957 | |
| 958 | if (src_pad) { |
| 959 | src_rowsize += (4 - src_pad); |
| 960 | } |
| 961 | |
| 962 | for (r = 0; r < sh; r++) { |
| 963 | unsigned char dst_mask = 0x80 >> (sx % 8); |
| 964 | unsigned char src_mask = 0x80; |
| 965 | char *dst = |
| 966 | buf + (sy - y + r) * rowsize + (sx - x) / 8; |
| 967 | char *src = be_buf + r * src_rowsize; |
| 968 | int b; |
| 969 | |
| 970 | for (b = 0; b < sw * ebits; b++) { |
| 971 | if (*src & src_mask) { |
| 972 | *dst |= dst_mask; |
| 973 | } |
| 974 | else { |
| 975 | *dst &= ~dst_mask; |
| 976 | } |
| 977 | |
| 978 | if (dst_mask > 1) |
| 979 | dst_mask >>= 1; |
| 980 | else { |
| 981 | dst_mask = 0x80; |
| 982 | dst++; |
| 983 | } |
| 984 | |
| 985 | if (src_mask > 1) |
| 986 | src_mask >>= 1; |
| 987 | else { |
| 988 | src_mask = 0x80; |
| 989 | src++; |
| 990 | } |
| 991 | } |
| 992 | } |
| 993 | |
| 994 | } |
| 995 | |
| 996 | free(be_buf); |
| 997 | } |
| 998 | else { |
| 999 | /* Throw data on the floor */ |
| 1000 | _XEatDataWords(dpy, be_reply.length); |
| 1001 | free(buf); |
| 1002 | return BadAlloc; |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | UnlockDisplay(dpy); |
| 1007 | SyncHandle(); |
| 1008 | |
| 1009 | } /* of npixels > 0 */ |
| 1010 | |
| 1011 | } /* of for loop */ |
| 1012 | |
| 1013 | } /* of if buf_size > 0 */ |
| 1014 | |
| 1015 | reply = (xGLXReadPixelsReply) { |
| 1016 | .type = X_Reply, |
| 1017 | .sequenceNumber = client->sequence, |
| 1018 | .length = buf_size >> 2 |
| 1019 | }; |
| 1020 | |
| 1021 | if (client->swapped) { |
| 1022 | __GLX_SWAP_SHORT(&reply.sequenceNumber); |
| 1023 | __GLX_SWAP_INT(&reply.length); |
| 1024 | } |
| 1025 | |
| 1026 | WriteToClient(client, sizeof(xGLXReadPixelsReply), &reply); |
| 1027 | if (buf_size > 0) { |
| 1028 | WriteToClient(client, buf_size, buf); |
| 1029 | free(buf); |
| 1030 | } |
| 1031 | |
| 1032 | return Success; |
| 1033 | } |
| 1034 | |
| 1035 | int |
| 1036 | __glXDispSwap_GetTexImage(__GLXclientState * cl, GLbyte * pc) |
| 1037 | { |
| 1038 | __GLX_DECLARE_SWAP_VARIABLES; |
| 1039 | GLbyte *lpc = pc; |
| 1040 | |
| 1041 | lpc += sz_xGLXSingleReq; |
| 1042 | __GLX_SWAP_INT(lpc + 0); |
| 1043 | __GLX_SWAP_INT(lpc + 4); |
| 1044 | __GLX_SWAP_INT(lpc + 8); |
| 1045 | __GLX_SWAP_INT(lpc + 12); |
| 1046 | |
| 1047 | /* reverse swapBytes */ |
| 1048 | *(GLboolean *) (lpc + 16) = !*(GLboolean *) (lpc + 16); |
| 1049 | |
| 1050 | return (__glXForwardPipe0WithReplySwap(cl, pc)); |
| 1051 | } |
| 1052 | |
| 1053 | int |
| 1054 | __glXDispSwap_GetColorTable(__GLXclientState * cl, GLbyte * pc) |
| 1055 | { |
| 1056 | __GLX_DECLARE_SWAP_VARIABLES; |
| 1057 | GLbyte *lpc = pc; |
| 1058 | |
| 1059 | lpc += sz_xGLXSingleReq; |
| 1060 | __GLX_SWAP_INT(lpc + 0); |
| 1061 | __GLX_SWAP_INT(lpc + 4); |
| 1062 | __GLX_SWAP_INT(lpc + 8); |
| 1063 | |
| 1064 | /* reverse swapBytes */ |
| 1065 | *(GLboolean *) (lpc + 12) = !*(GLboolean *) (lpc + 12); |
| 1066 | |
| 1067 | return (__glXForwardPipe0WithReplySwap(cl, pc)); |
| 1068 | } |