xm_api.c revision 1832f1cc86758fdcbd122edd5bf9e7a29ccade20
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* $Id: xm_api.c,v 1.21 2001/04/27 21:18:25 brianp Exp $ */ 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Mesa 3-D graphics library 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Version: 3.5 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Permission is hereby granted, free of charge, to any person obtaining a 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * copy of this software and associated documentation files (the "Software"), 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to deal in the Software without restriction, including without limitation 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch * and/or sell copies of the Software, and to permit persons to whom the 14868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) * Software is furnished to do so, subject to the following conditions: 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The above copyright notice and this permission notice shall be included 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in all copies or substantial portions of the Software. 18eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch * 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This file contains the implementations of all the XMesa* functions. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 31c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * NOTES: 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The window coordinate system origin (0,0) is in the lower-left corner 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * of the window. X11's window coordinate origin is in the upper-left 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * corner of the window. Therefore, most drawing functions in this 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * file have to flip Y coordinates. 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Define USE_XSHM in the Makefile with -DUSE_XSHM if you want to compile 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in support for the MIT Shared Memory extension. If enabled, when you 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * use an Ximage for the back buffer in double buffered mode, the "swap" 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * operation will be faster. You must also link with -lXext. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Byte swapping: If the Mesa host and the X display use a different 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * byte order then there's some trickiness to be aware of when using 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * XImages. The byte ordering used for the XImage is that of the X 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * display, not the Mesa host. 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The color-to-pixel encoding for True/DirectColor must be done 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * according to the display's visual red_mask, green_mask, and blue_mask. 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If XPutPixel is used to put a pixel into an XImage then XPutPixel will 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * do byte swapping if needed. If one wants to directly "poke" the pixel 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * into the XImage's buffer then the pixel must be byte swapped first. In 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Mesa, when byte swapping is needed we use the PF_TRUECOLOR pixel format 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and use XPutPixel everywhere except in the implementation of 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * glClear(GL_COLOR_BUFFER_BIT). We want this function to be fast so 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * instead of using XPutPixel we "poke" our values after byte-swapping 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the clear pixel value if needed. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef __CYGWIN__ 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef WIN32 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef __WIN32__ 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "glxheader.h" 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "GL/xmesa.h" 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "xmesaP.h" 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "context.h" 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "extensions.h" 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "glthread.h" 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "matrix.h" 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "mem.h" 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "mmath.h" 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "mtypes.h" 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef HAVE_CONFIG_H 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "conf.h" 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "macros.h" 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "swrast/swrast.h" 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "swrast_setup/swrast_setup.h" 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "array_cache/acache.h" 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "tnl/tnl.h" 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef GLX_NONE_EXT 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define GLX_NONE_EXT 0x8000 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Global X driver lock 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_glthread_Mutex _xmesa_lock; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Lookup tables for HPCR pixel format: 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static short hpcr_rgbTbl[3][256] = { 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 1062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 1072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 1082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 1102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 1122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 1132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 1142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 1152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 1162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 1172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}, 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}, 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 48, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55, 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63, 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 64, 64, 65, 65, 66, 66, 67, 67, 68, 68, 69, 69, 70, 70, 71, 71, 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 72, 72, 73, 73, 74, 74, 75, 75, 76, 76, 77, 77, 78, 78, 79, 79, 1442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 80, 80, 81, 81, 82, 82, 83, 83, 84, 84, 85, 85, 86, 86, 87, 87, 1452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 1472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 1482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/***** X Utility Functions *****/ 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * X/Mesa error reporting function: 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void error( const char *msg ) 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (getenv("MESA_DEBUG")) 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf( stderr, "X/Mesa error: %s\n", msg ); 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return the host's byte order as LSBFirst or MSBFirst ala X. 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef XFree86Server 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int host_byte_order( void ) 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int i = 1; 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *cptr = (char *) &i; 1822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return (*cptr==1) ? LSBFirst : MSBFirst; 1832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Error handling. 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef XFree86Server 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int mesaXErrorFlag = 0; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int mesaHandleXError( XMesaDisplay *dpy, XErrorEvent *event ) 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (void) dpy; 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void) event; 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mesaXErrorFlag = 1; 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 2012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)/* 2042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Check if the X Shared Memory extension is available. 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return: 0 = not available 2062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 1 = shared XImage support available 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2 = shared Pixmap support available also 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef XFree86Server 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int check_for_xshm( XMesaDisplay *display ) 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef USE_XSHM 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int major, minor, ignore; 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool pixmaps; 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (XQueryExtension( display, "MIT-SHM", &ignore, &ignore, &ignore )) { 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (XShmQueryVersion( display, &major, &minor, &pixmaps )==True) { 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (pixmaps==True) ? 2 : 1; 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Can't compile XSHM support */ 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return the width and height of the given drawable. 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void get_drawable_size( XMesaDisplay *dpy, XMesaDrawable d, 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int *width, unsigned int *height) 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef XFree86Server 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void) dpy; 2432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) *width = d->width; 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *height = d->height; 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Window root; 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int x, y; 2482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) unsigned int bw, depth; 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) _glthread_LOCK_MUTEX(_xmesa_lock); 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XGetGeometry( dpy, d, &root, &x, &y, width, height, &bw, &depth ); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) _glthread_UNLOCK_MUTEX(_xmesa_lock); 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Apply gamma correction to an intensity value in [0..max]. Return the 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * new intensity value. 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static GLint gamma_adjust( GLfloat gamma, GLint value, GLint max ) 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (gamma == 1.0) { 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return value; 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 2672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) double x = (double) value / (double) max; 2682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return IROUND_POS((GLfloat) max * pow(x, 1.0F/gamma)); 2692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)/* 2752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Return the true number of bits per pixel for XImages. 2762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * For example, if we request a 24-bit deep visual we may actually need/get 2772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 32bpp XImages. This function returns the appropriate bpp. 2782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Input: dpy - the X display 2792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * visinfo - desribes the visual to be used for XImages 2802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Return: true number of bits per pixel for XImages 2812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) */ 2822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#define GET_BITS_PER_PIXEL(xmv) bits_per_pixel(xmv) 2832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifdef XFree86Server 2852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)static int bits_per_pixel( XMesaVisual xmv ) 2872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 2882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XMesaVisualInfo visinfo = xmv->visinfo; 2892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int depth = visinfo->nplanes; 2902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int i; 2912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (i = 0; i < screenInfo.numPixmapFormats; i++) { 2922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (screenInfo.formats[i].depth == depth) 2932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return screenInfo.formats[i].bitsPerPixel; 2942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return depth; /* should never get here, but this should be safe */ 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#else 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)static int bits_per_pixel( XMesaVisual xmv ) 3012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 3022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XMesaDisplay *dpy = xmv->display; 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XMesaVisualInfo visinfo = xmv->visinfo; 3042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XMesaImage *img; 3052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int bitsPerPixel; 3062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* Create a temporary XImage */ 3072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) img = XCreateImage( dpy, visinfo->visual, visinfo->depth, 3082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ZPixmap, 0, /*format, offset*/ 3092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (char*) MALLOC(8), /*data*/ 3102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1, 1, /*width, height*/ 3112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 32, /*bitmap_pad*/ 3122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 0 /*bytes_per_line*/ 3132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ); 3142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) assert(img); 3152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* grab the bits/pixel value */ 3162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bitsPerPixel = img->bits_per_pixel; 3172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* free the XImage */ 3182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FREE( img->data ); 3192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) img->data = NULL; 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XMesaDestroyImage( img ); 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return bitsPerPixel; 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Determine if a given X window ID is valid (window exists). 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Do this by calling XGetWindowAttributes() for the window and 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * checking if we catch an X error. 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Input: dpy - the display 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * win - the window to check for existance 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return: GL_TRUE - window exists 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * GL_FALSE - window doesn't exist 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef XFree86Server 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static GLboolean WindowExistsFlag; 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int window_exists_err_handler( XMesaDisplay* dpy, XErrorEvent* xerr ) 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void) dpy; 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (xerr->error_code == BadWindow) { 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WindowExistsFlag = GL_FALSE; 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static GLboolean window_exists( XMesaDisplay *dpy, Window win ) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XWindowAttributes wa; 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int (*old_handler)( XMesaDisplay*, XErrorEvent* ); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WindowExistsFlag = GL_TRUE; 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) old_handler = XSetErrorHandler(window_exists_err_handler); 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XGetWindowAttributes( dpy, win, &wa ); /* dummy request */ 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XSetErrorHandler(old_handler); 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return WindowExistsFlag; 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/***** Linked list of XMesaBuffers *****/ 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static XMesaBuffer XMesaBufferList = NULL; 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Allocate a new XMesaBuffer, add to linked list */ 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static XMesaBuffer alloc_xmesa_buffer(void) 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b) { 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->Next = XMesaBufferList; 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBufferList = b; 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return b; 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Find an XMesaBuffer by matching X display and colormap but NOT matching 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the notThis buffer. 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static XMesaBuffer find_xmesa_buffer(XMesaDisplay *dpy, 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaColormap cmap, 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer notThis) 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer b; 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (b=XMesaBufferList; b; b=b->Next) { 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->display==dpy && b->cmap==cmap && b!=notThis) { 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return b; 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Free an XMesaBuffer, remove from linked list, perhaps free X colormap 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * entries. 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void free_xmesa_buffer(int client, XMesaBuffer buffer) 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer prev = NULL, b; 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void) client; 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (b=XMesaBufferList; b; b=b->Next) { 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b==buffer) { 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* unlink bufer from list */ 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (prev) 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prev->Next = buffer->Next; 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBufferList = buffer->Next; 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Check to free X colors */ 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (buffer->num_alloced>0) { 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* If no other buffer uses this X colormap then free the colors. */ 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!find_xmesa_buffer(buffer->display, buffer->cmap, buffer)) { 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef XFree86Server 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void)FreeColors(buffer->cmap, client, 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->num_alloced, buffer->alloced_colors, 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0); 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XFreeColors(buffer->display, buffer->cmap, 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->alloced_colors, buffer->num_alloced, 0); 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) _mesa_free_framebuffer_data(&buffer->mesa_buffer); 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FREE(buffer); 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* continue search */ 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prev = b; 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* buffer not found in XMesaBufferList */ 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) _mesa_problem(NULL,"free_xmesa_buffer() - buffer not found\n"); 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Copy X color table stuff from one XMesaBuffer to another. */ 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src) 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MEMCPY(dst->color_table, src->color_table, sizeof(src->color_table)); 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MEMCPY(dst->pixel_to_r, src->pixel_to_r, sizeof(src->pixel_to_r)); 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MEMCPY(dst->pixel_to_g, src->pixel_to_g, sizeof(src->pixel_to_g)); 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MEMCPY(dst->pixel_to_b, src->pixel_to_b, sizeof(src->pixel_to_b)); 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dst->num_alloced = src->num_alloced; 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MEMCPY(dst->alloced_colors, src->alloced_colors, 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sizeof(src->alloced_colors)); 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)/**********************************************************************/ 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/***** Misc Private Functions *****/ 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return number of bits set in n. 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int bitcount( unsigned long n ) 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int bits; 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (bits=0; n>0; n=n>>1) { 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (n&1) { 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bits++; 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 4722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return bits; 4732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 4742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Allocate a shared memory XImage back buffer for the given XMesaBuffer. 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return: GL_TRUE if success, GL_FALSE if error 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifndef XFree86Server 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static GLboolean alloc_shm_back_buffer( XMesaBuffer b ) 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef USE_XSHM 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * We have to do a _lot_ of error checking here to be sure we can 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * really use the XSHM extension. It seems different servers trigger 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * errors at different points if the extension won't work. Therefore 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * we have to be very careful... 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GC gc; 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int (*old_handler)( XMesaDisplay *, XErrorEvent * ); 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = XShmCreateImage( b->xm_visual->display, 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->xm_visual->visinfo->visual, 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->xm_visual->visinfo->depth, 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ZPixmap, NULL, &b->shminfo, 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->width, b->height ); 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->backimage == NULL) { 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) error("alloc_back_buffer: Shared memory error (XShmCreateImage), disabling."); 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->shm = 0; 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->shminfo.shmid = shmget( IPC_PRIVATE, b->backimage->bytes_per_line 5062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * b->backimage->height, IPC_CREAT|0777 ); 5072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (b->shminfo.shmid < 0) { 5082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (getenv("MESA_DEBUG")) 5092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) perror("alloc_back_buffer"); 5102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XDestroyImage( b->backimage ); 5112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->backimage = NULL; 5122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) error("alloc_back_buffer: Shared memory error (shmget), disabling."); 5132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->shm = 0; 5142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return GL_FALSE; 5152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->shminfo.shmaddr = b->backimage->data 5182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) = (char*)shmat( b->shminfo.shmid, 0, 0 ); 5192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (b->shminfo.shmaddr == (char *) -1) { 5202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (getenv("MESA_DEBUG")) 5212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) perror("alloc_back_buffer"); 5222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XDestroyImage( b->backimage ); 5232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) shmctl( b->shminfo.shmid, IPC_RMID, 0 ); 5242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->backimage = NULL; 5252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) error("alloc_back_buffer: Shared memory error (shmat), disabling."); 5262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->shm = 0; 5272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return GL_FALSE; 5282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->shminfo.readOnly = False; 5312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) mesaXErrorFlag = 0; 5322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) old_handler = XSetErrorHandler( mesaHandleXError ); 5332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* This may trigger the X protocol error we're ready to catch: */ 5342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XShmAttach( b->xm_visual->display, &b->shminfo ); 5352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XSync( b->xm_visual->display, False ); 5362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (mesaXErrorFlag) { 5382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* we are on a remote display, this error is normal, don't print it */ 5392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XFlush( b->xm_visual->display ); 5402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) mesaXErrorFlag = 0; 5412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) XDestroyImage( b->backimage ); 5422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) shmdt( b->shminfo.shmaddr ); 5432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) shmctl( b->shminfo.shmid, IPC_RMID, 0 ); 5442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->backimage = NULL; 5452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) b->shm = 0; 5462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (void) XSetErrorHandler( old_handler ); 5472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return GL_FALSE; 5482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 5492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shmctl( b->shminfo.shmid, IPC_RMID, 0 ); /* nobody else needs it */ 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Finally, try an XShmPutImage to be really sure the extension works */ 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gc = XCreateGC( b->xm_visual->display, b->frontbuffer, 0, NULL ); 5545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XShmPutImage( b->xm_visual->display, b->frontbuffer, gc, 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage, 0, 0, 0, 0, 1, 1 /*one pixel*/, False ); 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XSync( b->xm_visual->display, False ); 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XFreeGC( b->xm_visual->display, gc ); 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void) XSetErrorHandler( old_handler ); 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (mesaXErrorFlag) { 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XFlush( b->xm_visual->display ); 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mesaXErrorFlag = 0; 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XDestroyImage( b->backimage ); 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shmdt( b->shminfo.shmaddr ); 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shmctl( b->shminfo.shmid, IPC_RMID, 0 ); 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = NULL; 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->shm = 0; 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->backimage) { 5715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int height = b->backimage->height; 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Needed by PIXELADDR1 macro */ 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_width1 = b->backimage->bytes_per_line; 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_origin1 = (GLubyte *) b->backimage->data 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) + b->ximage_width1 * (height-1); 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Needed by PIXELADDR2 macro */ 5775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_width2 = b->backimage->bytes_per_line / 2; 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_origin2 = (GLushort *) b->backimage->data 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) + b->ximage_width2 * (height-1); 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Needed by PIXELADDR3 macro */ 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_width3 = b->backimage->bytes_per_line; 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_origin3 = (GLubyte *) b->backimage->data 5835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) + b->ximage_width3 * (height-1); 5845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Needed by PIXELADDR4 macro */ 5855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_width4 = b->backimage->width; 5865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->ximage_origin4 = (GLuint *) b->backimage->data 5875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) + b->ximage_width4 * (height-1); 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_TRUE; 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 5925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Can't compile XSHM support */ 5935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Setup an off-screen pixmap or Ximage to use as the back buffer. 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Input: b - the X/Mesa buffer 6035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void xmesa_alloc_back_buffer( XMesaBuffer b ) 6055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->db_state==BACK_XIMAGE) { 6075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Deallocate the old backimage, if any */ 6085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->backimage) { 6095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_XSHM) && !defined(XFree86Server) 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->shm) { 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XShmDetach( b->xm_visual->display, &b->shminfo ); 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XDestroyImage( b->backimage ); 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shmdt( b->shminfo.shmaddr ); 6145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaDestroyImage( b->backimage ); 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = NULL; 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Allocate new back buffer */ 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef XFree86Server 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Allocate a regular XImage for the back buffer. */ 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = XMesaCreateImage(b->xm_visual->BitsPerPixel, 6265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->width, b->height, NULL); 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->shm==0 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) || alloc_shm_back_buffer(b)==GL_FALSE 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ) { 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Allocate a regular XImage for the back buffer. */ 6325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = XCreateImage( b->xm_visual->display, 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->xm_visual->visinfo->visual, 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GET_VISUAL_DEPTH(b->xm_visual), 6355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ZPixmap, 0, /* format, offset */ 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, b->width, b->height, 6375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8, 0 ); /* pad, bytes_per_line */ 6385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!b->backimage) { 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) error("alloc_back_buffer: XCreateImage failed."); 6415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage->data = (char *) MALLOC( b->backimage->height 6435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * b->backimage->bytes_per_line ); 6445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!b->backimage->data) { 6455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) error("alloc_back_buffer: MALLOC failed."); 6465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaDestroyImage( b->backimage ); 6475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = NULL; 6485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backpixmap = None; 6515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else if (b->db_state==BACK_PIXMAP) { 6535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaPixmap old_pixmap = b->backpixmap; 6545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Free the old back pixmap */ 6555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->backpixmap) { 6565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaFreePixmap( b->xm_visual->display, b->backpixmap ); 6575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Allocate new back pixmap */ 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backpixmap = XMesaCreatePixmap( b->xm_visual->display, b->frontbuffer, 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->width, b->height, 6615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GET_VISUAL_DEPTH(b->xm_visual) ); 6625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->backimage = NULL; 6635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* update other references to backpixmap */ 6645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (b->buffer==(XMesaDrawable)old_pixmap) { 6655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) b->buffer = (XMesaDrawable)b->backpixmap; 6665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * A replacement for XAllocColor. This function should never 6745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * fail to allocate a color. When XAllocColor fails, we return 6755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the nearest matching color. If we have to allocate many colors 6765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * this function isn't too efficient; the XQueryColors() could be 6775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * done just once. 6785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Written by Michael Pichler, Brian Paul, Mark Kilgard 6795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Input: dpy - X display 6805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * cmap - X colormap 6815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * cmapSize - size of colormap 6825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * In/Out: color - the XColor struct 6835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Output: exact - 1=exact color match, 0=closest match 6845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * alloced - 1=XAlloc worked, 0=XAlloc failed 6855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void 6875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)noFaultXAllocColor( int client, 6885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaDisplay *dpy, 6895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaColormap cmap, 6905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int cmapSize, 6915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaColor *color, 6925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int *exact, int *alloced ) 6935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef XFree86Server 6955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Pixel *ppixIn; 6965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xrgb *ctable; 6975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 6985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* we'll try to cache ctable for better remote display performance */ 6995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static Display *prevDisplay = NULL; 7005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static XMesaColormap prevCmap = 0; 7015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static int prevCmapSize = 0; 7025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static XMesaColor *ctable = NULL; 7035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 7045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaColor subColor; 7055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int i, bestmatch; 7065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double mindist; /* 3*2^16^2 exceeds long int precision. */ 7075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (void) client; 7095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* First try just using XAllocColor. */ 7115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef XFree86Server 7125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (AllocColor(cmap, 7135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &color->red, &color->green, &color->blue, 7145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &color->pixel, 7155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) client) == Success) { 7165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 7175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (XAllocColor(dpy, cmap, color)) { 7185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 7195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *exact = 1; 7205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *alloced = 1; 7215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 7225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Alloc failed, search for closest match */ 7255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Retrieve color table entries. */ 7275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* XXX alloca candidate. */ 7285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef XFree86Server 7295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppixIn = (Pixel *) MALLOC(cmapSize * sizeof(Pixel)); 7305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ctable = (xrgb *) MALLOC(cmapSize * sizeof(xrgb)); 7315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (i = 0; i < cmapSize; i++) { 7325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ppixIn[i] = i; 7335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) QueryColors(cmap, cmapSize, ppixIn, ctable); 7355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 7365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (prevDisplay != dpy || prevCmap != cmap 7375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) || prevCmapSize != cmapSize || !ctable) { 7385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* free previously cached color table */ 7395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ctable) 7405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FREE(ctable); 7415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Get the color table from X */ 7425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ctable = (XMesaColor *) MALLOC(cmapSize * sizeof(XMesaColor)); 7435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(ctable); 7445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (i = 0; i < cmapSize; i++) { 7455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ctable[i].pixel = i; 7465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XQueryColors(dpy, cmap, ctable, cmapSize); 7485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prevDisplay = dpy; 7495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prevCmap = cmap; 7505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prevCmapSize = cmapSize; 7515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 7525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 7535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Find best match. */ 7555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bestmatch = -1; 7565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) mindist = 0.0; 7575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (i = 0; i < cmapSize; i++) { 7582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) double dr = 0.30 * ((double) color->red - (double) ctable[i].red); 7592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) double dg = 0.59 * ((double) color->green - (double) ctable[i].green); 7602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) double db = 0.11 * ((double) color->blue - (double) ctable[i].blue); 7612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) double dist = dr * dr + dg * dg + db * db; 7622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (bestmatch < 0 || dist < mindist) { 7632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bestmatch = i; 7642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) mindist = dist; 7652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 7682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* Return result. */ 7692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.red = ctable[bestmatch].red; 7702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.green = ctable[bestmatch].green; 7712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.blue = ctable[bestmatch].blue; 7722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* Try to allocate the closest match color. This should only 7732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * fail if the cell is read/write. Otherwise, we're incrementing 7742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * the cell's reference count. 7752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) */ 7762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifdef XFree86Server 7772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (AllocColor(cmap, 7782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) &subColor.red, &subColor.green, &subColor.blue, 7792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) &subColor.pixel, 7802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) client) == Success) { 7812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#else 782c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (XAllocColor(dpy, cmap, &subColor)) { 7832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 7842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) *alloced = 1; 7852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) else { 7872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* do this to work around a problem reported by Frank Ortega */ 7882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.pixel = (unsigned long) bestmatch; 7892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.red = ctable[bestmatch].red; 7902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.green = ctable[bestmatch].green; 7912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.blue = ctable[bestmatch].blue; 7922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) subColor.flags = DoRed | DoGreen | DoBlue; 7932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) *alloced = 0; 7942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifdef XFree86Server 7962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FREE(ppixIn); 7972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FREE(ctable); 7982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#else 799c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /* don't free table, save it for next time */ 800c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 801c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 802c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) *color = subColor; 803c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) *exact = 0; 804c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 805c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 806c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 807c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 808c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 809c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)/* 810c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * Do setup for PF_GRAYSCALE pixel format. 8115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Note that buffer may be NULL. 8125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static GLboolean setup_grayscale( int client, XMesaVisual v, 8145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer buffer, XMesaColormap cmap ) 8155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 8165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { 8175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 8185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (buffer) { 8215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer prevBuffer; 8225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!cmap) { 8245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 8255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) prevBuffer = find_xmesa_buffer(v->display, cmap, buffer); 8282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (prevBuffer && 8295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (buffer->xm_visual->mesa_visual.rgbMode == 8305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prevBuffer->xm_visual->mesa_visual.rgbMode)) { 8315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Copy colormap stuff from previous XMesaBuffer which uses same 8325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * X colormap. Do this to avoid time spent in noFaultXAllocColor. 8335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) copy_colortable_info(buffer, prevBuffer); 8355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 8375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Allocate 256 shades of gray */ 8385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int gray; 8395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int colorsfailed = 0; 8405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (gray=0;gray<256;gray++) { 8415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLint r = gamma_adjust( v->RedGamma, gray, 255 ); 8425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLint g = gamma_adjust( v->GreenGamma, gray, 255 ); 8435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLint b = gamma_adjust( v->BlueGamma, gray, 255 ); 8445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int exact, alloced; 8455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaColor xcol; 8465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xcol.red = (r << 8) | r; 8475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xcol.green = (g << 8) | g; 8485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xcol.blue = (b << 8) | b; 8495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) noFaultXAllocColor( client, v->display, 8505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cmap, GET_COLORMAP_SIZE(v), 8515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &xcol, &exact, &alloced ); 8525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!exact) { 8535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) colorsfailed++; 8545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (alloced) { 8565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(buffer->num_alloced<256); 8575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; 8585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->num_alloced++; 8595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /*OLD 8625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(gray < 576); 8632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buffer->color_table[gray*3+0] = xcol.pixel; 8642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buffer->color_table[gray*3+1] = xcol.pixel; 8655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->color_table[gray*3+2] = xcol.pixel; 8665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(xcol.pixel < 65536); 8675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->pixel_to_r[xcol.pixel] = gray * 30 / 100; 8685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->pixel_to_g[xcol.pixel] = gray * 59 / 100; 8695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->pixel_to_b[xcol.pixel] = gray * 11 / 100; 8705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->color_table[gray] = xcol.pixel; 8725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) assert(xcol.pixel < 65536); 8735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->pixel_to_r[xcol.pixel] = gray; 8745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->pixel_to_g[xcol.pixel] = gray; 8755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) buffer->pixel_to_b[xcol.pixel] = gray; 8765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (colorsfailed && getenv("MESA_DEBUG")) { 8795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf( stderr, 8805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Note: %d out of 256 needed colors do not match exactly.\n", 8815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) colorsfailed ); 8825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 8855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) v->dithered_pf = PF_GRAYSCALE; 8875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) v->undithered_pf = PF_GRAYSCALE; 8885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_TRUE; 8895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 8905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 8945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Setup RGB rendering for a window with a PseudoColor, StaticColor, 8955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * or 8-bit TrueColor visual visual. We try to allocate a palette of 225 8965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * colors (5 red, 9 green, 5 blue) and dither to approximate a 24-bit RGB 8975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * color. While this function was originally designed just for 8-bit 8985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * visuals, it has also proven to work from 4-bit up to 16-bit visuals. 8995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Dithering code contributed by Bob Mercier. 9002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) */ 9012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)static GLboolean setup_dithered_color( int client, XMesaVisual v, 9025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer buffer, XMesaColormap cmap ) 9035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 9045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { 9055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 9065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (buffer) { 9095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) XMesaBuffer prevBuffer; 9105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!cmap) { 9125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return GL_FALSE; 9135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prevBuffer = find_xmesa_buffer(v->display, cmap, buffer); 9165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (prevBuffer && 9175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (buffer->xm_visual->mesa_visual.rgbMode == 9185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) prevBuffer->xm_visual->mesa_visual.rgbMode)) { 9195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Copy colormap stuff from previous, matching XMesaBuffer. 9205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Do this to avoid time spent in noFaultXAllocColor. 9215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) copy_colortable_info(buffer, prevBuffer); 9235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 9245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 925 /* Allocate X colors and initialize color_table[], red_table[], etc */ 926 int r, g, b, i; 927 int colorsfailed = 0; 928 for (r = 0; r < _R; r++) { 929 for (g = 0; g < _G; g++) { 930 for (b = 0; b < _B; b++) { 931 XMesaColor xcol; 932 int exact, alloced; 933 xcol.red =gamma_adjust(v->RedGamma, r*65535/(_R-1),65535); 934 xcol.green=gamma_adjust(v->GreenGamma, g*65535/(_G-1),65535); 935 xcol.blue =gamma_adjust(v->BlueGamma, b*65535/(_B-1),65535); 936 noFaultXAllocColor( client, v->display, 937 cmap, GET_COLORMAP_SIZE(v), 938 &xcol, &exact, &alloced ); 939 if (!exact) { 940 colorsfailed++; 941 } 942 if (alloced) { 943 assert(buffer->num_alloced<256); 944 buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; 945 buffer->num_alloced++; 946 } 947 i = _MIX( r, g, b ); 948 assert(i < 576); 949 buffer->color_table[i] = xcol.pixel; 950 assert(xcol.pixel < 65536); 951 buffer->pixel_to_r[xcol.pixel] = r * 255 / (_R-1); 952 buffer->pixel_to_g[xcol.pixel] = g * 255 / (_G-1); 953 buffer->pixel_to_b[xcol.pixel] = b * 255 / (_B-1); 954 } 955 } 956 } 957 958 if (colorsfailed && getenv("MESA_DEBUG")) { 959 fprintf( stderr, 960 "Note: %d out of %d needed colors do not match exactly.\n", 961 colorsfailed, _R*_G*_B ); 962 } 963 } 964 } 965 966 v->dithered_pf = PF_DITHER; 967 v->undithered_pf = PF_LOOKUP; 968 return GL_TRUE; 969} 970 971 972/* 973 * Setup for Hewlett Packard Color Recovery 8-bit TrueColor mode. 974 * HPCR simulates 24-bit color fidelity with an 8-bit frame buffer. 975 * Special dithering tables have to be initialized. 976 */ 977static void setup_8bit_hpcr( XMesaVisual v ) 978{ 979 /* HP Color Recovery contributed by: Alex De Bruyn (ad@lms.be) 980 * To work properly, the atom _HP_RGB_SMOOTH_MAP_LIST must be defined 981 * on the root window AND the colormap obtainable by XGetRGBColormaps 982 * for that atom must be set on the window. (see also tkInitWindow) 983 * If that colormap is not set, the output will look stripy. 984 */ 985 986 /* Setup color tables with gamma correction */ 987 int i; 988 double g; 989 990 g = 1.0 / v->RedGamma; 991 for (i=0; i<256; i++) { 992 GLint red = IROUND_POS(255.0 * pow( hpcr_rgbTbl[0][i]/255.0, g )); 993 v->hpcr_rgbTbl[0][i] = CLAMP( red, 16, 239 ); 994 } 995 996 g = 1.0 / v->GreenGamma; 997 for (i=0; i<256; i++) { 998 GLint green = IROUND_POS(255.0 * pow( hpcr_rgbTbl[1][i]/255.0, g )); 999 v->hpcr_rgbTbl[1][i] = CLAMP( green, 16, 239 ); 1000 } 1001 1002 g = 1.0 / v->BlueGamma; 1003 for (i=0; i<256; i++) { 1004 GLint blue = IROUND_POS(255.0 * pow( hpcr_rgbTbl[2][i]/255.0, g )); 1005 v->hpcr_rgbTbl[2][i] = CLAMP( blue, 32, 223 ); 1006 } 1007 v->undithered_pf = PF_HPCR; /* can't really disable dithering for now */ 1008 v->dithered_pf = PF_HPCR; 1009 1010 /* which method should I use to clear */ 1011 /* GL_FALSE: keep the ordinary method */ 1012 /* GL_TRUE : clear with dither pattern */ 1013 v->hpcr_clear_flag = getenv("MESA_HPCR_CLEAR") ? GL_TRUE : GL_FALSE; 1014 1015 if (v->hpcr_clear_flag) { 1016 v->hpcr_clear_pixmap = XMesaCreatePixmap(v->display, 1017 DefaultRootWindow(v->display), 1018 16, 2, 8); 1019#ifndef XFree86Server 1020 v->hpcr_clear_ximage = XGetImage(v->display, v->hpcr_clear_pixmap, 1021 0, 0, 16, 2, AllPlanes, ZPixmap); 1022#endif 1023 } 1024} 1025 1026 1027/* 1028 * Setup RGB rendering for a window with a True/DirectColor visual. 1029 */ 1030static void setup_truecolor( XMesaVisual v, XMesaBuffer buffer, 1031 XMesaWindow window, XMesaColormap cmap ) 1032{ 1033 unsigned long rmask, gmask, bmask; 1034 (void) buffer; 1035 (void) window; 1036 (void) cmap; 1037 1038 /* Compute red multiplier (mask) and bit shift */ 1039 v->rshift = 0; 1040 rmask = GET_REDMASK(v); 1041 while ((rmask & 1)==0) { 1042 v->rshift++; 1043 rmask = rmask >> 1; 1044 } 1045 1046 /* Compute green multiplier (mask) and bit shift */ 1047 v->gshift = 0; 1048 gmask = GET_GREENMASK(v); 1049 while ((gmask & 1)==0) { 1050 v->gshift++; 1051 gmask = gmask >> 1; 1052 } 1053 1054 /* Compute blue multiplier (mask) and bit shift */ 1055 v->bshift = 0; 1056 bmask = GET_BLUEMASK(v); 1057 while ((bmask & 1)==0) { 1058 v->bshift++; 1059 bmask = bmask >> 1; 1060 } 1061 1062 /* 1063 * Compute component-to-pixel lookup tables and dithering kernel 1064 */ 1065 { 1066 static GLubyte kernel[16] = { 1067 0*16, 8*16, 2*16, 10*16, 1068 12*16, 4*16, 14*16, 6*16, 1069 3*16, 11*16, 1*16, 9*16, 1070 15*16, 7*16, 13*16, 5*16, 1071 }; 1072 GLint rBits = bitcount(rmask); 1073 GLint gBits = bitcount(gmask); 1074 GLint bBits = bitcount(bmask); 1075 GLint maxBits; 1076 GLuint i; 1077 1078 /* convert pixel components in [0,_mask] to RGB values in [0,255] */ 1079 for (i=0; i<=rmask; i++) 1080 v->PixelToR[i] = (unsigned char) ((i * 255) / rmask); 1081 for (i=0; i<=gmask; i++) 1082 v->PixelToG[i] = (unsigned char) ((i * 255) / gmask); 1083 for (i=0; i<=bmask; i++) 1084 v->PixelToB[i] = (unsigned char) ((i * 255) / bmask); 1085 1086 /* convert RGB values from [0,255] to pixel components */ 1087 1088 for (i=0;i<256;i++) { 1089 GLint r = gamma_adjust(v->RedGamma, i, 255); 1090 GLint g = gamma_adjust(v->GreenGamma, i, 255); 1091 GLint b = gamma_adjust(v->BlueGamma, i, 255); 1092 v->RtoPixel[i] = (r >> (8-rBits)) << v->rshift; 1093 v->GtoPixel[i] = (g >> (8-gBits)) << v->gshift; 1094 v->BtoPixel[i] = (b >> (8-bBits)) << v->bshift; 1095 } 1096 /* overflow protection */ 1097 for (i=256;i<512;i++) { 1098 v->RtoPixel[i] = v->RtoPixel[255]; 1099 v->GtoPixel[i] = v->GtoPixel[255]; 1100 v->BtoPixel[i] = v->BtoPixel[255]; 1101 } 1102 1103 /* setup dithering kernel */ 1104 maxBits = rBits; 1105 if (gBits > maxBits) maxBits = gBits; 1106 if (bBits > maxBits) maxBits = bBits; 1107 for (i=0;i<16;i++) { 1108 v->Kernel[i] = kernel[i] >> maxBits; 1109 } 1110 1111 v->undithered_pf = PF_TRUECOLOR; 1112 v->dithered_pf = (GET_VISUAL_DEPTH(v)<24) ? PF_TRUEDITHER : PF_TRUECOLOR; 1113 } 1114 1115 /* 1116 * Now check for TrueColor visuals which we can optimize. 1117 */ 1118 if ( GET_REDMASK(v) ==0x0000ff 1119 && GET_GREENMASK(v)==0x00ff00 1120 && GET_BLUEMASK(v) ==0xff0000 1121 && CHECK_BYTE_ORDER(v) 1122 && v->BitsPerPixel==32 1123 && sizeof(GLuint)==4 1124 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 1125 /* common 32 bpp config used on SGI, Sun */ 1126 v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; 1127 } 1128 else if (GET_REDMASK(v) ==0xff0000 1129 && GET_GREENMASK(v)==0x00ff00 1130 && GET_BLUEMASK(v) ==0x0000ff 1131 && CHECK_BYTE_ORDER(v) 1132 && v->BitsPerPixel==32 1133 && sizeof(GLuint)==4 1134 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 1135 /* common 32 bpp config used on Linux, HP, IBM */ 1136 v->undithered_pf = v->dithered_pf = PF_8R8G8B; 1137 } 1138 else if (GET_REDMASK(v) ==0xff0000 1139 && GET_GREENMASK(v)==0x00ff00 1140 && GET_BLUEMASK(v) ==0x0000ff 1141 && CHECK_BYTE_ORDER(v) 1142 && v->BitsPerPixel==24 1143 && sizeof(GLuint)==4 1144 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 1145 /* common packed 24 bpp config used on Linux */ 1146 v->undithered_pf = v->dithered_pf = PF_8R8G8B24; 1147 } 1148 else if (GET_REDMASK(v) ==0xf800 1149 && GET_GREENMASK(v)==0x07e0 1150 && GET_BLUEMASK(v) ==0x001f 1151 && CHECK_BYTE_ORDER(v) 1152 && v->BitsPerPixel==16 1153 && sizeof(GLushort)==2 1154 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 1155 /* 5-6-5 color weight on common PC VGA boards */ 1156 v->undithered_pf = PF_5R6G5B; 1157 v->dithered_pf = PF_DITHER_5R6G5B; 1158 } 1159 else if (GET_REDMASK(v) ==0xe0 1160 && GET_GREENMASK(v)==0x1c 1161 && GET_BLUEMASK(v) ==0x03 1162 && CHECK_FOR_HPCR(v)) { 1163 setup_8bit_hpcr( v ); 1164 } 1165} 1166 1167 1168 1169/* 1170 * Setup RGB rendering for a window with a monochrome visual. 1171 */ 1172static void setup_monochrome( XMesaVisual v, XMesaBuffer b ) 1173{ 1174 (void) b; 1175 v->dithered_pf = v->undithered_pf = PF_1BIT; 1176 /* if black=1 then we must flip pixel values */ 1177 v->bitFlip = (GET_BLACK_PIXEL(v) != 0); 1178} 1179 1180 1181 1182/* 1183 * When a context is "made current" for the first time, we can finally 1184 * finish initializing the context's visual and buffer information. 1185 * Input: v - the XMesaVisual to initialize 1186 * b - the XMesaBuffer to initialize (may be NULL) 1187 * rgb_flag - TRUE = RGBA mode, FALSE = color index mode 1188 * window - the window/pixmap we're rendering into 1189 * cmap - the colormap associated with the window/pixmap 1190 * Return: GL_TRUE=success, GL_FALSE=failure 1191 */ 1192static GLboolean initialize_visual_and_buffer( int client, 1193 XMesaVisual v, 1194 XMesaBuffer b, 1195 GLboolean rgb_flag, 1196 XMesaDrawable window, 1197 XMesaColormap cmap 1198 ) 1199{ 1200#ifndef XFree86Server 1201 XGCValues gcvalues; 1202#endif 1203 1204 if (b) { 1205 assert(b->xm_visual == v); 1206 } 1207 1208 /* Save true bits/pixel */ 1209 v->BitsPerPixel = GET_BITS_PER_PIXEL(v); 1210 assert(v->BitsPerPixel > 0); 1211 1212 1213 if (rgb_flag==GL_FALSE) { 1214 /* COLOR-INDEXED WINDOW: 1215 * Even if the visual is TrueColor or DirectColor we treat it as 1216 * being color indexed. This is weird but might be useful to someone. 1217 */ 1218 v->dithered_pf = v->undithered_pf = PF_INDEX; 1219 v->index_bits = GET_VISUAL_DEPTH(v); 1220 } 1221 else { 1222 /* RGB WINDOW: 1223 * We support RGB rendering into almost any kind of visual. 1224 */ 1225 int xclass; 1226 xclass = GET_VISUAL_CLASS(v); 1227 if (xclass==TrueColor || xclass==DirectColor) { 1228 setup_truecolor( v, b, (XMesaWindow)window, cmap ); 1229 } 1230 else if (xclass==StaticGray && GET_VISUAL_DEPTH(v)==1) { 1231 setup_monochrome( v, b ); 1232 } 1233 else if (xclass==GrayScale || xclass==StaticGray) { 1234 if (!setup_grayscale( client, v, b, cmap )) { 1235 return GL_FALSE; 1236 } 1237 } 1238 else if ((xclass==PseudoColor || xclass==StaticColor) 1239 && GET_VISUAL_DEPTH(v)>=4 && GET_VISUAL_DEPTH(v)<=16) { 1240 if (!setup_dithered_color( client, v, b, cmap )) { 1241 return GL_FALSE; 1242 } 1243 } 1244 else { 1245 error("XMesa: RGB mode rendering not supported in given visual."); 1246 return GL_FALSE; 1247 } 1248 v->index_bits = 0; 1249 1250 if (getenv("MESA_NO_DITHER")) { 1251 v->dithered_pf = v->undithered_pf; 1252 } 1253 } 1254 1255 1256 /* 1257 * If MESA_INFO env var is set print out some debugging info 1258 * which can help Brian figure out what's going on when a user 1259 * reports bugs. 1260 */ 1261 if (getenv("MESA_INFO")) { 1262 fprintf(stderr, "X/Mesa visual = %p\n", v); 1263 fprintf(stderr, "X/Mesa dithered pf = %u\n", v->dithered_pf); 1264 fprintf(stderr, "X/Mesa undithered pf = %u\n", v->undithered_pf); 1265 fprintf(stderr, "X/Mesa level = %d\n", v->level); 1266 fprintf(stderr, "X/Mesa depth = %d\n", GET_VISUAL_DEPTH(v)); 1267 fprintf(stderr, "X/Mesa bits per pixel = %d\n", v->BitsPerPixel); 1268 } 1269 1270 if (b && window) { 1271 /* Do window-specific initializations */ 1272 1273 /* Window dimensions */ 1274 unsigned int w, h; 1275 get_drawable_size( v->display, window, &w, &h ); 1276 b->width = w; 1277 b->height = h; 1278 1279 b->frontbuffer = window; 1280 1281 /* Setup for single/double buffering */ 1282 if (v->mesa_visual.doubleBufferMode) { 1283 /* Double buffered */ 1284#ifndef XFree86Server 1285 b->shm = check_for_xshm( v->display ); 1286#endif 1287 xmesa_alloc_back_buffer( b ); 1288 if (b->db_state==BACK_PIXMAP) { 1289 b->buffer = (XMesaDrawable)b->backpixmap; 1290 } 1291 else { 1292 b->buffer = XIMAGE; 1293 } 1294 } 1295 else { 1296 /* Single Buffered */ 1297 b->buffer = b->frontbuffer; 1298 } 1299 1300 /* X11 graphics contexts */ 1301#ifdef XFree86Server 1302 b->gc = CreateScratchGC(v->display, window->depth); 1303#else 1304 b->gc = XCreateGC( v->display, window, 0, NULL ); 1305#endif 1306 XMesaSetFunction( v->display, b->gc, GXcopy ); 1307 1308 /* 1309 * Don't generate Graphics Expose/NoExpose events in swapbuffers(). 1310 * Patch contributed by Michael Pichler May 15, 1995. 1311 */ 1312#ifdef XFree86Server 1313 b->cleargc = CreateScratchGC(v->display, window->depth); 1314 { 1315 CARD32 v[1]; 1316 v[0] = FALSE; 1317 dixChangeGC(NullClient, b->cleargc, GCGraphicsExposures, v, NULL); 1318 } 1319#else 1320 gcvalues.graphics_exposures = False; 1321 b->cleargc = XCreateGC( v->display, window, 1322 GCGraphicsExposures, &gcvalues); 1323#endif 1324 XMesaSetFunction( v->display, b->cleargc, GXcopy ); 1325 /* 1326 * Set fill style and tile pixmap once for all for HPCR stuff 1327 * (instead of doing it each time in clear_color_HPCR_pixmap()) 1328 * Initialize whole stuff 1329 * Patch contributed by Jacques Leroy March 8, 1998. 1330 */ 1331 if (v->hpcr_clear_flag && b->buffer!=XIMAGE) { 1332 int i; 1333 for (i=0; i<16; i++) 1334 { 1335 XMesaPutPixel(v->hpcr_clear_ximage, i, 0, 0); 1336 XMesaPutPixel(v->hpcr_clear_ximage, i, 1, 0); 1337 } 1338 XMesaPutImage(b->display, (XMesaDrawable)v->hpcr_clear_pixmap, 1339 b->cleargc, v->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); 1340 XMesaSetFillStyle( v->display, b->cleargc, FillTiled); 1341 XMesaSetTile( v->display, b->cleargc, v->hpcr_clear_pixmap ); 1342 } 1343 1344 /* Initialize the row buffer XImage for use in write_color_span() */ 1345#ifdef XFree86Server 1346 b->rowimage = XMesaCreateImage(GET_VISUAL_DEPTH(v), MAX_WIDTH, 1, 1347 (char *)MALLOC(MAX_WIDTH*4)); 1348#else 1349 b->rowimage = XCreateImage( v->display, 1350 v->visinfo->visual, 1351 v->visinfo->depth, 1352 ZPixmap, 0, /*format, offset*/ 1353 (char*) MALLOC(MAX_WIDTH*4), /*data*/ 1354 MAX_WIDTH, 1, /*width, height*/ 1355 32, /*bitmap_pad*/ 1356 0 /*bytes_per_line*/ ); 1357#endif 1358 } 1359 1360 return GL_TRUE; 1361} 1362 1363 1364 1365/* 1366 * Convert an RGBA color to a pixel value. 1367 */ 1368unsigned long 1369xmesa_color_to_pixel( XMesaContext xmesa, GLubyte r, GLubyte g, GLubyte b, GLubyte a, 1370 GLuint pixelFormat) 1371{ 1372 switch (pixelFormat) { 1373 case PF_INDEX: 1374 return 0; 1375 case PF_TRUECOLOR: 1376 { 1377 unsigned long p; 1378 PACK_TRUECOLOR( p, r, g, b ); 1379 return p; 1380 } 1381 case PF_8A8B8G8R: 1382 return PACK_8A8B8G8R( r, g, b, a ); 1383 case PF_8R8G8B: 1384 /* fall through */ 1385 case PF_8R8G8B24: 1386 return PACK_8R8G8B( r, g, b ); 1387 case PF_5R6G5B: 1388 return PACK_5R6G5B( r, g, b ); 1389 case PF_DITHER: 1390 { 1391 DITHER_SETUP; 1392 return DITHER( 1, 0, r, g, b ); 1393 } 1394 case PF_1BIT: 1395 /* 382 = (3*255)/2 */ 1396 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 1397 case PF_HPCR: 1398 return DITHER_HPCR(1, 1, r, g, b); 1399 case PF_LOOKUP: 1400 { 1401 LOOKUP_SETUP; 1402 return LOOKUP( r, g, b ); 1403 } 1404 case PF_GRAYSCALE: 1405 return GRAY_RGB( r, g, b ); 1406 case PF_TRUEDITHER: 1407 /* fall through */ 1408 case PF_DITHER_5R6G5B: 1409 { 1410 unsigned long p; 1411 PACK_TRUEDITHER(p, 1, 0, r, g, b); 1412 return p; 1413 } 1414 default: 1415 _mesa_problem(NULL, "Bad pixel format in xmesa_color_to_pixel"); 1416 } 1417 return 0; 1418} 1419 1420 1421/**********************************************************************/ 1422/***** Public Functions *****/ 1423/**********************************************************************/ 1424 1425 1426/* 1427 * Create a new X/Mesa visual. 1428 * Input: display - X11 display 1429 * visinfo - an XVisualInfo pointer 1430 * rgb_flag - GL_TRUE = RGB mode, 1431 * GL_FALSE = color index mode 1432 * alpha_flag - alpha buffer requested? 1433 * db_flag - GL_TRUE = double-buffered, 1434 * GL_FALSE = single buffered 1435 * stereo_flag - stereo visual? 1436 * ximage_flag - GL_TRUE = use an XImage for back buffer, 1437 * GL_FALSE = use an off-screen pixmap for back buffer 1438 * depth_size - requested bits/depth values, or zero 1439 * stencil_size - requested bits/stencil values, or zero 1440 * accum_red_size - requested bits/red accum values, or zero 1441 * accum_green_size - requested bits/green accum values, or zero 1442 * accum_blue_size - requested bits/blue accum values, or zero 1443 * accum_alpha_size - requested bits/alpha accum values, or zero 1444 * num_samples - number of samples/pixel if multisampling, or zero 1445 * level - visual level, usually 0 1446 * visualCaveat - ala the GLX extension, usually GLX_NONE_EXT 1447 * Return; a new XMesaVisual or 0 if error. 1448 */ 1449XMesaVisual XMesaCreateVisual( XMesaDisplay *display, 1450 XMesaVisualInfo visinfo, 1451 GLboolean rgb_flag, 1452 GLboolean alpha_flag, 1453 GLboolean db_flag, 1454 GLboolean stereo_flag, 1455 GLboolean ximage_flag, 1456 GLint depth_size, 1457 GLint stencil_size, 1458 GLint accum_red_size, 1459 GLint accum_green_size, 1460 GLint accum_blue_size, 1461 GLint accum_alpha_size, 1462 GLint num_samples, 1463 GLint level, 1464 GLint visualCaveat ) 1465{ 1466 char *gamma; 1467 XMesaVisual v; 1468 GLint red_bits, green_bits, blue_bits, alpha_bits; 1469 1470 /* For debugging only */ 1471 if (getenv("MESA_XSYNC")) { 1472 /* This makes debugging X easier. 1473 * In your debugger, set a breakpoint on _XError to stop when an 1474 * X protocol error is generated. 1475 */ 1476#ifdef XFree86Server 1477 /* NOT_NEEDED */ 1478#else 1479 XSynchronize( display, 1 ); 1480#endif 1481 } 1482 1483 v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); 1484 if (!v) { 1485 return NULL; 1486 } 1487 1488 /* 1489 * In the X server, NULL is passed in for the display. It will have 1490 * to be set before using this visual. See XMesaSetVisualDisplay() 1491 * below. 1492 */ 1493 v->display = display; 1494 1495 /* Save a copy of the XVisualInfo struct because the user may XFREE() 1496 * the struct but we may need some of the information contained in it 1497 * at a later time. 1498 */ 1499#ifdef XFree86Server 1500 v->visinfo = visinfo; 1501#else 1502 v->visinfo = (XVisualInfo *) MALLOC(sizeof(*visinfo)); 1503 if(!v->visinfo) { 1504 FREE(v); 1505 return NULL; 1506 } 1507 MEMCPY(v->visinfo, visinfo, sizeof(*visinfo)); 1508 1509 /* Save a copy of the pointer now so we can find this visual again 1510 * if we need to search for it in find_glx_visual(). 1511 */ 1512 v->vishandle = visinfo; 1513#endif 1514 1515#ifdef XFree86Server 1516 /* Initialize the depth of the screen */ 1517 { 1518 PixmapFormatRec *format; 1519 1520 for (format = screenInfo.formats; 1521 format->depth != display->rootDepth; 1522 format++) 1523 ; 1524 v->screen_depth = format->bitsPerPixel; 1525 } 1526#endif 1527 1528 /* check for MESA_GAMMA environment variable */ 1529 gamma = getenv("MESA_GAMMA"); 1530 if (gamma) { 1531 v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0; 1532 sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma ); 1533 if (v->RedGamma<=0.0) v->RedGamma = 1.0; 1534 if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma; 1535 if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma; 1536 } 1537 else { 1538 v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0; 1539 } 1540 1541 v->ximage_flag = ximage_flag; 1542 v->level = level; 1543 v->VisualCaveat = visualCaveat; 1544 1545 (void) initialize_visual_and_buffer( 0, v, NULL, rgb_flag, 0, 0 ); 1546 1547 { 1548 int xclass; 1549 xclass = GET_VISUAL_CLASS(v); 1550 if (xclass==TrueColor || xclass==DirectColor) { 1551 red_bits = bitcount(GET_REDMASK(v)); 1552 green_bits = bitcount(GET_GREENMASK(v)); 1553 blue_bits = bitcount(GET_BLUEMASK(v)); 1554 alpha_bits = 0; 1555 } 1556 else { 1557 /* this is an approximation */ 1558 int depth; 1559 depth = GET_VISUAL_DEPTH(v); 1560 red_bits = depth / 3; 1561 depth -= red_bits; 1562 green_bits = depth / 2; 1563 depth -= green_bits; 1564 blue_bits = depth; 1565 alpha_bits = 0; 1566 assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) ); 1567 } 1568 } 1569 1570 if (alpha_flag && alpha_bits == 0) 1571 alpha_bits = 8; 1572 1573 _mesa_initialize_visual( &v->mesa_visual, 1574 rgb_flag, db_flag, stereo_flag, 1575 red_bits, green_bits, 1576 blue_bits, alpha_bits, 1577 v->index_bits, 1578 depth_size, 1579 stencil_size, 1580 accum_red_size, accum_green_size, 1581 accum_blue_size, accum_alpha_size, 1582 0 ); 1583 return v; 1584} 1585 1586 1587void XMesaSetVisualDisplay( XMesaDisplay *dpy, XMesaVisual v ) 1588{ 1589 v->display = dpy; 1590} 1591 1592 1593void XMesaDestroyVisual( XMesaVisual v ) 1594{ 1595#ifndef XFree86Server 1596 FREE(v->visinfo); 1597#endif 1598 FREE(v); 1599} 1600 1601 1602 1603/* 1604 * Create a new XMesaContext. 1605 * Input: v - XMesaVisual 1606 * share_list - another XMesaContext with which to share display 1607 * lists or NULL if no sharing is wanted. 1608 * Return: an XMesaContext or NULL if error. 1609 */ 1610XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list ) 1611{ 1612 XMesaContext c; 1613 GLcontext *ctx; 1614 GLboolean direct = GL_TRUE; /* XXXX */ 1615 /* NOT_DONE: should this be GL_FALSE??? */ 1616 static GLboolean firstTime = GL_TRUE; 1617 1618 if (firstTime) { 1619 _glthread_INIT_MUTEX(_xmesa_lock); 1620 firstTime = GL_FALSE; 1621 } 1622 1623 c = (XMesaContext) CALLOC_STRUCT(xmesa_context); 1624 if (!c) { 1625 return NULL; 1626 } 1627 1628 ctx = c->gl_ctx = _mesa_create_context( &v->mesa_visual, 1629 share_list ? share_list->gl_ctx : (GLcontext *) NULL, 1630 (void *) c, direct ); 1631 if (!c->gl_ctx) { 1632 FREE(c); 1633 return NULL; 1634 } 1635 1636 _mesa_enable_sw_extensions(ctx); 1637 1638 if (CHECK_BYTE_ORDER(v)) { 1639 c->swapbytes = GL_FALSE; 1640 } 1641 else { 1642 c->swapbytes = GL_TRUE; 1643 } 1644 1645 c->xm_visual = v; 1646 c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ 1647 c->display = v->display; 1648 c->pixelformat = v->dithered_pf; /* Dithering is enabled by default */ 1649 1650 ctx->Driver.UpdateState = xmesa_update_state; 1651 1652#if defined(GLX_DIRECT_RENDERING) && !defined(XFree86Server) 1653 c->driContextPriv = driContextPriv; 1654#endif 1655 1656 /* Initialize the software rasterizer and helper modules. 1657 */ 1658 _swrast_CreateContext( ctx ); 1659 _ac_CreateContext( ctx ); 1660 _tnl_CreateContext( ctx ); 1661 _swsetup_CreateContext( ctx ); 1662 1663 xmesa_register_swrast_functions( ctx ); 1664 1665 /* Set up some constant pointers: 1666 */ 1667 xmesa_init_pointers( ctx ); 1668 1669 1670 /* Run the config file 1671 */ 1672 _mesa_context_initialize( ctx ); 1673 1674 1675 return c; 1676} 1677 1678 1679 1680 1681void XMesaDestroyContext( XMesaContext c ) 1682{ 1683#ifdef FX 1684 if (c->xm_buffer && c->xm_buffer->FXctx) 1685 fxMesaDestroyContext(c->xm_buffer->FXctx); 1686#endif 1687 if (c->gl_ctx) { 1688 _swsetup_DestroyContext( c->gl_ctx ); 1689 _swrast_DestroyContext( c->gl_ctx ); 1690 _tnl_DestroyContext( c->gl_ctx ); 1691 _ac_DestroyContext( c->gl_ctx ); 1692 _mesa_destroy_context( c->gl_ctx ); 1693 } 1694 1695 /* Disassociate old buffer with this context */ 1696 if (c->xm_buffer) 1697 c->xm_buffer->xm_context = NULL; 1698 1699 /* Destroy any buffers which are using this context. If we don't 1700 * we may have dangling references. Hmm, maybe we should just 1701 * set the buffer's context pointer to NULL instead of deleting it? 1702 * Let's see if we get any bug reports... 1703 * This contributed by Doug Rabson <dfr@calcaphon.com> 1704 */ 1705 { 1706 XMesaBuffer b, next; 1707 for (b = XMesaBufferList; b; b = next) { 1708 next = b->Next; 1709 if (!b->pixmap_flag) { 1710#ifndef XFree86Server 1711 XSync(b->display, False); 1712#endif 1713 if (b->xm_context == c) { 1714 /* found a context created for this context */ 1715 XMesaDestroyBuffer( b ); 1716 } 1717 } 1718 } 1719 } 1720 1721 FREE( c ); 1722} 1723 1724 1725 1726/* 1727 * XXX this isn't a public function! It's a hack for the 3Dfx driver. 1728 * Create a new XMesaBuffer from an X window. 1729 * Input: v - the XMesaVisual 1730 * w - the window 1731 * c - the context 1732 * Return: new XMesaBuffer or NULL if error 1733 */ 1734XMesaBuffer XMesaCreateWindowBuffer2( XMesaVisual v, XMesaWindow w, 1735 XMesaContext c ) 1736{ 1737#ifndef XFree86Server 1738 XWindowAttributes attr; 1739#endif 1740#ifdef FX 1741 char *fxEnvVar; 1742#endif 1743 int client = 0; 1744 1745 XMesaBuffer b = alloc_xmesa_buffer(); 1746 if (!b) { 1747 return NULL; 1748 } 1749 1750 (void) c; 1751 1752#ifdef XFree86Server 1753 client = CLIENT_ID(((XMesaDrawable)w)->id); 1754#endif 1755 1756 assert(v); 1757 1758#ifdef XFree86Server 1759 if (GET_VISUAL_DEPTH(v) != ((XMesaDrawable)w)->depth) { 1760#else 1761 XGetWindowAttributes( v->display, w, &attr ); 1762 1763 if (GET_VISUAL_DEPTH(v) != attr.depth) { 1764#endif 1765 if (getenv("MESA_DEBUG")) { 1766 fprintf(stderr, "XMesaCreateWindowBuffer: depth mismatch between visual and window!\n"); 1767 } 1768 return NULL; 1769 } 1770 1771 b->xm_context = NULL; /* Associate no context with this buffer */ 1772 1773 b->xm_visual = v; 1774 b->pixmap_flag = GL_FALSE; 1775 b->display = v->display; 1776#ifdef XFree86Server 1777 b->cmap = (ColormapPtr)LookupIDByType(wColormap(w), RT_COLORMAP); 1778#else 1779 if (attr.colormap) { 1780 b->cmap = attr.colormap; 1781 } 1782 else { 1783 if (getenv("MESA_DEBUG")) { 1784 fprintf(stderr, "Window %u has no colormap!\n", (unsigned int) w); 1785 } 1786 /* this is weird, a window w/out a colormap!? */ 1787 /* OK, let's just allocate a new one and hope for the best */ 1788 b->cmap = XCreateColormap(v->display, w, attr.visual, AllocNone); 1789 } 1790#endif 1791 1792 /* determine back buffer implementation */ 1793 if (v->mesa_visual.doubleBufferMode) { 1794 if (v->ximage_flag) { 1795 b->db_state = BACK_XIMAGE; 1796 } 1797 else { 1798 b->db_state = BACK_PIXMAP; 1799 } 1800 } 1801 else { 1802 b->db_state = 0; 1803 } 1804 1805 _mesa_initialize_framebuffer(&b->mesa_buffer, 1806 &v->mesa_visual, 1807 v->mesa_visual.depthBits > 0, 1808 v->mesa_visual.stencilBits > 0, 1809 v->mesa_visual.accumRedBits > 0, 1810 v->mesa_visual.alphaBits > 0 ); 1811 1812 if (!initialize_visual_and_buffer( client, v, b, v->mesa_visual.rgbMode, 1813 (XMesaDrawable)w, b->cmap )) { 1814 free_xmesa_buffer(client, b); 1815 return NULL; 1816 } 1817 1818#ifdef FX 1819 fxEnvVar = getenv("MESA_GLX_FX"); 1820 if (fxEnvVar) { 1821 if (fxEnvVar[0]!='d') { 1822 int attribs[100]; 1823 int numAttribs = 0; 1824 int hw; 1825 if (v->mesa_visual.depthBits > 0) { 1826 attribs[numAttribs++] = FXMESA_DEPTH_SIZE; 1827 attribs[numAttribs++] = 1; 1828 } 1829 if (v->mesa_visual.doubleBufferMode) { 1830 attribs[numAttribs++] = FXMESA_DOUBLEBUFFER; 1831 } 1832 if (v->mesa_visual.accumRedBits > 0) { 1833 attribs[numAttribs++] = FXMESA_ACCUM_SIZE; 1834 attribs[numAttribs++] = v->mesa_visual.accumRedBits; 1835 } 1836 if (v->mesa_visual.stencilBits > 0) { 1837 attribs[numAttribs++] = FXMESA_STENCIL_SIZE; 1838 attribs[numAttribs++] = v->mesa_visual.stencilBits; 1839 } 1840 if (v->mesa_visual.alphaBits > 0) { 1841 attribs[numAttribs++] = FXMESA_ALPHA_SIZE; 1842 attribs[numAttribs++] = 1; 1843 } 1844 if (c->gl_ctx) { 1845#define FXMESA_SHARE_CONTEXT 990099 /* keep in sync with fxapi.c! */ 1846 attribs[numAttribs++] = FXMESA_SHARE_CONTEXT; 1847 attribs[numAttribs++] = (int) c->gl_ctx; 1848 } 1849 attribs[numAttribs++] = FXMESA_NONE; 1850 1851 if ((hw = fxQueryHardware())==GR_SSTTYPE_VOODOO) { 1852 b->FXctx = fxMesaCreateBestContext(0, b->width, b->height, attribs); 1853 if ((v->undithered_pf!=PF_INDEX) && (b->backimage)) { 1854 b->FXisHackUsable = b->FXctx ? GL_TRUE : GL_FALSE; 1855 if (fxEnvVar[0]=='w' || fxEnvVar[0]=='W') 1856 b->FXwindowHack = b->FXctx ? GL_TRUE : GL_FALSE; 1857 else 1858 b->FXwindowHack = GL_FALSE; 1859 } 1860 } 1861 else { 1862 if (fxEnvVar[0]=='w' || fxEnvVar[0]=='W') 1863 b->FXctx = fxMesaCreateContext(w, GR_RESOLUTION_NONE, 1864 GR_REFRESH_75Hz, attribs); 1865 else 1866 b->FXctx = fxMesaCreateBestContext(0, b->width, b->height, attribs); 1867 b->FXisHackUsable = GL_FALSE; 1868 b->FXwindowHack = GL_FALSE; 1869 } 1870 /* 1871 fprintf(stderr, 1872 "voodoo %d, wid %d height %d hack: usable %d active %d\n", 1873 hw, b->width, b->height, b->FXisHackUsable, b->FXwindowHack); 1874 */ 1875 } 1876 } 1877 else { 1878 fprintf(stderr,"WARNING: This Mesa Library includes the Glide driver but\n"); 1879 fprintf(stderr," you have not defined the MESA_GLX_FX env. var.\n"); 1880 fprintf(stderr," (check the README.3DFX file for more information).\n\n"); 1881 fprintf(stderr," you can disable this message with a 'export MESA_GLX_FX=disable'.\n"); 1882 } 1883#endif 1884 1885#if defined(GLX_DIRECT_RENDERING) && !defined(XFree86Server) 1886 b->driDrawPriv = driDrawPriv; 1887#endif 1888 1889 return b; 1890} 1891 1892 1893XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, XMesaWindow w ) 1894{ 1895 return XMesaCreateWindowBuffer2( v, w, NULL ); 1896} 1897 1898 1899/* 1900 * Create a new XMesaBuffer from an X pixmap. 1901 * Input: v - the XMesaVisual 1902 * p - the pixmap 1903 * cmap - the colormap, may be 0 if using a TrueColor or DirectColor 1904 * visual for the pixmap 1905 * Return: new XMesaBuffer or NULL if error 1906 */ 1907XMesaBuffer XMesaCreatePixmapBuffer( XMesaVisual v, 1908 XMesaPixmap p, XMesaColormap cmap ) 1909{ 1910 int client = 0; 1911 XMesaBuffer b = alloc_xmesa_buffer(); 1912 if (!b) { 1913 return NULL; 1914 } 1915 1916 1917#ifdef XFree86Server 1918 client = CLIENT_ID(((XMesaDrawable)p)->id); 1919#endif 1920 1921 assert(v); 1922 1923 b->xm_context = NULL; /* Associate no context with this buffer */ 1924 1925 b->xm_visual = v; 1926 b->pixmap_flag = GL_TRUE; 1927 b->display = v->display; 1928 b->cmap = cmap; 1929 1930 /* determine back buffer implementation */ 1931 if (v->mesa_visual.doubleBufferMode) { 1932 if (v->ximage_flag) { 1933 b->db_state = BACK_XIMAGE; 1934 } 1935 else { 1936 b->db_state = BACK_PIXMAP; 1937 } 1938 } 1939 else { 1940 b->db_state = 0; 1941 } 1942 1943 _mesa_initialize_framebuffer(&b->mesa_buffer, 1944 &v->mesa_visual, 1945 v->mesa_visual.depthBits > 0, 1946 v->mesa_visual.stencilBits > 0, 1947 v->mesa_visual.accumRedBits + 1948 v->mesa_visual.accumGreenBits + 1949 v->mesa_visual.accumBlueBits > 0, 1950 v->mesa_visual.alphaBits > 0 ); 1951 1952 if (!initialize_visual_and_buffer(client, v, b, v->mesa_visual.rgbMode, 1953 (XMesaDrawable)p, cmap)) { 1954 free_xmesa_buffer(client, b); 1955 return NULL; 1956 } 1957 1958#if defined(GLX_DIRECT_RENDERING) && !defined(XFree86Server) 1959 b->driDrawPriv = driDrawPriv; 1960#endif 1961 1962 return b; 1963} 1964 1965 1966 1967/* 1968 * Deallocate an XMesaBuffer structure and all related info. 1969 */ 1970void XMesaDestroyBuffer( XMesaBuffer b ) 1971{ 1972 int client = 0; 1973 1974#ifdef XFree86Server 1975 if (b->frontbuffer) 1976 client = CLIENT_ID(b->frontbuffer->id); 1977#endif 1978 1979 if (b->gc) XMesaFreeGC( b->xm_visual->display, b->gc ); 1980 if (b->cleargc) XMesaFreeGC( b->xm_visual->display, b->cleargc ); 1981 1982 if (b->backimage) { 1983#if defined(USE_XSHM) && !defined(XFree86Server) 1984 if (b->shm) { 1985 XShmDetach( b->xm_visual->display, &b->shminfo ); 1986 XDestroyImage( b->backimage ); 1987 shmdt( b->shminfo.shmaddr ); 1988 } 1989 else 1990#endif 1991 XMesaDestroyImage( b->backimage ); 1992 } 1993 if (b->backpixmap) { 1994 XMesaFreePixmap( b->xm_visual->display, b->backpixmap ); 1995 if (b->xm_visual->hpcr_clear_flag) { 1996 XMesaFreePixmap( b->xm_visual->display, 1997 b->xm_visual->hpcr_clear_pixmap ); 1998 XMesaDestroyImage( b->xm_visual->hpcr_clear_ximage ); 1999 } 2000 } 2001 if (b->rowimage) { 2002 FREE( b->rowimage->data ); 2003 b->rowimage->data = NULL; 2004 XMesaDestroyImage( b->rowimage ); 2005 } 2006 2007 if (b->xm_context) 2008 b->xm_context->xm_buffer = NULL; 2009 2010 free_xmesa_buffer(client, b); 2011} 2012 2013 2014 2015/* 2016 * Bind buffer b to context c and make c the current rendering context. 2017 */ 2018GLboolean XMesaMakeCurrent( XMesaContext c, XMesaBuffer b ) 2019{ 2020 return XMesaMakeCurrent2( c, b, b ); 2021} 2022 2023 2024/* 2025 * Bind buffer b to context c and make c the current rendering context. 2026 */ 2027GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, 2028 XMesaBuffer readBuffer ) 2029{ 2030 if (c) { 2031 if (!drawBuffer || !readBuffer) 2032 return GL_FALSE; /* must specify buffers! */ 2033 2034#ifdef FX 2035 if (drawBuffer->FXctx) { 2036 fxMesaMakeCurrent(drawBuffer->FXctx); 2037 2038 /* Disassociate old buffer from this context */ 2039 if (c->xm_buffer) 2040 c->xm_buffer->xm_context = NULL; 2041 2042 /* Associate the context with this buffer */ 2043 drawBuffer->xm_context = c; 2044 2045 c->xm_buffer = drawBuffer; 2046 c->xm_read_buffer = readBuffer; 2047 c->use_read_buffer = (drawBuffer != readBuffer); 2048 2049 return GL_TRUE; 2050 } 2051#endif 2052 if (c->gl_ctx == _mesa_get_current_context() 2053 && c->xm_buffer == drawBuffer 2054 && c->xm_read_buffer == readBuffer 2055 && c->xm_buffer->wasCurrent) { 2056 /* same context and buffer, do nothing */ 2057 return GL_TRUE; 2058 } 2059 2060 /* Disassociate old buffer with this context */ 2061 if (c->xm_buffer) 2062 c->xm_buffer->xm_context = NULL; 2063 drawBuffer->xm_context = c; /* Associate the context with this buffer */ 2064 2065 c->xm_buffer = drawBuffer; 2066 c->xm_read_buffer = readBuffer; 2067 c->use_read_buffer = (drawBuffer != readBuffer); 2068 2069 _mesa_make_current2(c->gl_ctx, 2070 &drawBuffer->mesa_buffer, 2071 &readBuffer->mesa_buffer); 2072 2073 if (c->gl_ctx->Viewport.Width == 0) { 2074 /* initialize viewport to window size */ 2075 _mesa_Viewport( 0, 0, drawBuffer->width, drawBuffer->height ); 2076 c->gl_ctx->Scissor.Width = drawBuffer->width; 2077 c->gl_ctx->Scissor.Height = drawBuffer->height; 2078 } 2079 2080 if (c->xm_visual->mesa_visual.rgbMode) { 2081 /* 2082 * Must recompute and set these pixel values because colormap 2083 * can be different for different windows. 2084 */ 2085 c->clearpixel = xmesa_color_to_pixel( c, 2086 c->clearcolor[0], 2087 c->clearcolor[1], 2088 c->clearcolor[2], 2089 c->clearcolor[3], 2090 c->xm_visual->undithered_pf); 2091 XMesaSetForeground(c->display, c->xm_buffer->cleargc, c->clearpixel); 2092 } 2093 2094 /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ 2095 c->xm_buffer->wasCurrent = GL_TRUE; 2096 } 2097 else { 2098 /* Detach */ 2099 _mesa_make_current2( NULL, NULL, NULL ); 2100 } 2101 return GL_TRUE; 2102} 2103 2104 2105/* 2106 * Unbind the context c from its buffer. 2107 */ 2108GLboolean XMesaUnbindContext( XMesaContext c ) 2109{ 2110 /* A no-op for XFree86 integration purposes */ 2111 return GL_TRUE; 2112} 2113 2114 2115XMesaContext XMesaGetCurrentContext( void ) 2116{ 2117 GET_CURRENT_CONTEXT(ctx); 2118 if (ctx) { 2119 XMesaContext xmesa = (XMesaContext) ctx->DriverCtx; 2120 return xmesa; 2121 } 2122 else { 2123 return 0; 2124 } 2125} 2126 2127 2128XMesaBuffer XMesaGetCurrentBuffer( void ) 2129{ 2130 GET_CURRENT_CONTEXT(ctx); 2131 if (ctx) { 2132 XMesaContext xmesa = (XMesaContext) ctx->DriverCtx; 2133 return xmesa->xm_buffer; 2134 } 2135 else { 2136 return 0; 2137 } 2138} 2139 2140 2141/* New in Mesa 3.1 */ 2142XMesaBuffer XMesaGetCurrentReadBuffer( void ) 2143{ 2144 GET_CURRENT_CONTEXT(ctx); 2145 if (ctx) { 2146 XMesaContext xmesa = (XMesaContext) ctx->DriverCtx; 2147 return xmesa->xm_buffer; 2148 } 2149 else { 2150 return 0; 2151 } 2152} 2153 2154 2155GLboolean XMesaForceCurrent(XMesaContext c) 2156{ 2157 if (c) { 2158 if (c->gl_ctx != _mesa_get_current_context()) { 2159 _mesa_make_current(c->gl_ctx, &c->xm_buffer->mesa_buffer); 2160 } 2161 } 2162 else { 2163 _mesa_make_current(NULL, NULL); 2164 } 2165 return GL_TRUE; 2166} 2167 2168 2169GLboolean XMesaLoseCurrent(XMesaContext c) 2170{ 2171 (void) c; 2172 _mesa_make_current(NULL, NULL); 2173 return GL_TRUE; 2174} 2175 2176 2177/* 2178 * Switch 3Dfx support hack between window and full-screen mode. 2179 */ 2180GLboolean XMesaSetFXmode( GLint mode ) 2181{ 2182#ifdef FX 2183 const char *fx = getenv("MESA_GLX_FX"); 2184 if (fx && fx[0] != 'd') { 2185 GET_CURRENT_CONTEXT(ctx); 2186 GrHwConfiguration hw; 2187 if (!FX_grSstQueryHardware(&hw)) { 2188 /*fprintf(stderr, "!grSstQueryHardware\n");*/ 2189 return GL_FALSE; 2190 } 2191 if (hw.num_sst < 1) { 2192 /*fprintf(stderr, "hw.num_sst < 1\n");*/ 2193 return GL_FALSE; 2194 } 2195 if (ctx) { 2196 XMesaContext xmesa = (XMesaContext) ctx->DriverCtx; 2197 if (mode == XMESA_FX_WINDOW) { 2198 if (xmesa->xm_buffer->FXisHackUsable) { 2199 FX_grSstControl(GR_CONTROL_DEACTIVATE); 2200 xmesa->xm_buffer->FXwindowHack = GL_TRUE; 2201 return GL_TRUE; 2202 } 2203 } 2204 else if (mode == XMESA_FX_FULLSCREEN) { 2205 FX_grSstControl(GR_CONTROL_ACTIVATE); 2206 xmesa->xm_buffer->FXwindowHack = GL_FALSE; 2207 return GL_TRUE; 2208 } 2209 else { 2210 /* Error: Bad mode value */ 2211 } 2212 } 2213 } 2214 /*fprintf(stderr, "fallthrough\n");*/ 2215#else 2216 (void) mode; 2217#endif 2218 return GL_FALSE; 2219} 2220 2221 2222 2223#ifdef FX 2224/* 2225 * Read image from VooDoo frame buffer into X/Mesa's back XImage. 2226 */ 2227static void FXgetImage( XMesaBuffer b ) 2228{ 2229 static unsigned short pixbuf[MAX_WIDTH]; 2230 GLuint x, y; 2231 int xpos, ypos; 2232 XMesaWindow root; 2233 unsigned int bw, depth, width, height; 2234 XMesaContext xmesa = (XMesaContext) b->xm_context->gl_ctx->DriverCtx; 2235 2236 assert(xmesa->xm_buffer->FXctx); 2237 2238#ifdef XFree86Server 2239 x = b->frontbuffer->x; 2240 y = b->frontbuffer->y; 2241 width = b->frontbuffer->width; 2242 height = b->frontbuffer->height; 2243 depth = b->frontbuffer->depth; 2244#else 2245 XGetGeometry( xmesa->xm_visual->display, b->frontbuffer, 2246 &root, &xpos, &ypos, &width, &height, &bw, &depth); 2247#endif 2248 if (b->width != width || b->height != height) { 2249 b->width = MIN2((int)width, xmesa->xm_buffer->FXctx->width); 2250 b->height = MIN2((int)height, xmesa->xm_buffer->FXctx->height); 2251 if (b->width & 1) 2252 b->width--; /* prevent odd width */ 2253 xmesa_alloc_back_buffer( b ); 2254 } 2255 2256 grLfbWriteColorFormat(GR_COLORFORMAT_ARGB); 2257 if (xmesa->xm_visual->undithered_pf==PF_5R6G5B) { 2258 /* Special case: 16bpp RGB */ 2259 grLfbReadRegion( GR_BUFFER_FRONTBUFFER, /* src buffer */ 2260 0, xmesa->xm_buffer->FXctx->height - b->height, /*pos*/ 2261 b->width, b->height, /* size */ 2262 b->width * sizeof(GLushort), /* stride */ 2263 b->backimage->data); /* dest buffer */ 2264 } 2265 else if (xmesa->xm_visual->dithered_pf==PF_DITHER 2266 && GET_VISUAL_DEPTH(xmesa->xm_visual)==8) { 2267 /* Special case: 8bpp RGB */ 2268 for (y=0;y<b->height;y++) { 2269 GLubyte *ptr = (GLubyte*) xmesa->xm_buffer->backimage->data 2270 + xmesa->xm_buffer->backimage->bytes_per_line * y; 2271 XDITHER_SETUP(y); 2272 2273 /* read row from 3Dfx frame buffer */ 2274 grLfbReadRegion( GR_BUFFER_FRONTBUFFER, 2275 0, xmesa->xm_buffer->FXctx->height-(b->height-y), 2276 b->width, 1, 2277 0, 2278 pixbuf ); 2279 2280 /* write to XImage back buffer */ 2281 for (x=0;x<b->width;x++) { 2282 GLubyte r = (pixbuf[x] & 0xf800) >> 8; 2283 GLubyte g = (pixbuf[x] & 0x07e0) >> 3; 2284 GLubyte b = (pixbuf[x] & 0x001f) << 3; 2285 *ptr++ = XDITHER( x, r, g, b); 2286 } 2287 } 2288 } 2289 else { 2290 /* General case: slow! */ 2291 for (y=0;y<b->height;y++) { 2292 /* read row from 3Dfx frame buffer */ 2293 grLfbReadRegion( GR_BUFFER_FRONTBUFFER, 2294 0, xmesa->xm_buffer->FXctx->height-(b->height-y), 2295 b->width, 1, 2296 0, 2297 pixbuf ); 2298 2299 /* write to XImage back buffer */ 2300 for (x=0;x<b->width;x++) { 2301 XMesaPutPixel(b->backimage,x,y, 2302 xmesa_color_to_pixel(xmesa, 2303 (pixbuf[x] & 0xf800) >> 8, 2304 (pixbuf[x] & 0x07e0) >> 3, 2305 (pixbuf[x] & 0x001f) << 3, 2306 0xff, xmesa->pixelformat)); 2307 } 2308 } 2309 } 2310 grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); 2311} 2312#endif 2313 2314 2315/* 2316 * Copy the back buffer to the front buffer. If there's no back buffer 2317 * this is a no-op. 2318 */ 2319void XMesaSwapBuffers( XMesaBuffer b ) 2320{ 2321 GET_CURRENT_CONTEXT(ctx); 2322 2323 /* If we're swapping the buffer associated with the current context 2324 * we have to flush any pending rendering commands first. 2325 */ 2326 if (b->xm_context && b->xm_context->gl_ctx == ctx) 2327 _mesa_swapbuffers(ctx); 2328 2329 if (b->db_state) { 2330#ifdef FX 2331 if (b->FXctx) { 2332 fxMesaSwapBuffers(); 2333 2334 if (b->FXwindowHack) 2335 FXgetImage(b); 2336 else 2337 return; 2338 } 2339#endif 2340 if (b->backimage) { 2341 /* Copy Ximage from host's memory to server's window */ 2342#if defined(USE_XSHM) && !defined(XFree86Server) 2343 if (b->shm) { 2344 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2345 XShmPutImage( b->xm_visual->display, b->frontbuffer, 2346 b->cleargc, 2347 b->backimage, 0, 0, 2348 0, 0, b->width, b->height, False ); 2349 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2350 } 2351 else 2352#endif 2353 { 2354#if defined(GLX_DIRECT_RENDERING) && !defined(XFree86Server) 2355 XMesaDriSwapBuffers( b ); 2356#else 2357 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2358 XMesaPutImage( b->xm_visual->display, b->frontbuffer, 2359 b->cleargc, 2360 b->backimage, 0, 0, 2361 0, 0, b->width, b->height ); 2362 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2363#endif 2364 } 2365 } 2366 else { 2367 /* Copy pixmap to window on server */ 2368 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2369 XMesaCopyArea( b->xm_visual->display, 2370 b->backpixmap, /* source drawable */ 2371 b->frontbuffer, /* dest. drawable */ 2372 b->cleargc, 2373 0, 0, b->width, b->height, /* source region */ 2374 0, 0 /* dest region */ 2375 ); 2376 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2377 } 2378 } 2379#if !defined(GLX_DIRECT_RENDERING) && !defined(XFree86Server) 2380 XSync( b->xm_visual->display, False ); 2381#endif 2382} 2383 2384 2385 2386/* 2387 * Copy sub-region of back buffer to front buffer 2388 */ 2389void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) 2390{ 2391 GET_CURRENT_CONTEXT(ctx); 2392 2393 /* If we're swapping the buffer associated with the current context 2394 * we have to flush any pending rendering commands first. 2395 */ 2396 if (b->xm_context->gl_ctx == ctx) 2397 _mesa_swapbuffers(ctx); 2398 2399 if (b->db_state) { 2400 int yTop = b->height - y - height; 2401#ifdef FX 2402 if (b->FXctx) { 2403 fxMesaSwapBuffers(); 2404 if (b->FXwindowHack) 2405 FXgetImage(b); 2406 else 2407 return; 2408 } 2409#endif 2410 if (b->backimage) { 2411 /* Copy Ximage from host's memory to server's window */ 2412#if defined(USE_XSHM) && !defined(XFree86Server) 2413 if (b->shm) { 2414 /* XXX assuming width and height aren't too large! */ 2415 XShmPutImage( b->xm_visual->display, b->frontbuffer, 2416 b->cleargc, 2417 b->backimage, x, yTop, 2418 x, yTop, width, height, False ); 2419 /* wait for finished event??? */ 2420 } 2421 else 2422#endif 2423 { 2424 /* XXX assuming width and height aren't too large! */ 2425 XMesaPutImage( b->xm_visual->display, b->frontbuffer, 2426 b->cleargc, 2427 b->backimage, x, yTop, 2428 x, yTop, width, height ); 2429 } 2430 } 2431 else { 2432 /* Copy pixmap to window on server */ 2433 XMesaCopyArea( b->xm_visual->display, 2434 b->backpixmap, /* source drawable */ 2435 b->frontbuffer, /* dest. drawable */ 2436 b->cleargc, 2437 x, yTop, width, height, /* source region */ 2438 x, yTop /* dest region */ 2439 ); 2440 } 2441 } 2442} 2443 2444 2445/* 2446 * Return a pointer to the XMesa backbuffer Pixmap or XImage. This function 2447 * is a way to get "under the hood" of X/Mesa so one can manipulate the 2448 * back buffer directly. 2449 * Output: pixmap - pointer to back buffer's Pixmap, or 0 2450 * ximage - pointer to back buffer's XImage, or NULL 2451 * Return: GL_TRUE = context is double buffered 2452 * GL_FALSE = context is single buffered 2453 */ 2454GLboolean XMesaGetBackBuffer( XMesaBuffer b, 2455 XMesaPixmap *pixmap, 2456 XMesaImage **ximage ) 2457{ 2458 if (b->db_state) { 2459 if (pixmap) *pixmap = b->backpixmap; 2460 if (ximage) *ximage = b->backimage; 2461 return GL_TRUE; 2462 } 2463 else { 2464 *pixmap = 0; 2465 *ximage = NULL; 2466 return GL_FALSE; 2467 } 2468} 2469 2470 2471/* 2472 * Return the depth buffer associated with an XMesaBuffer. 2473 * Input: b - the XMesa buffer handle 2474 * Output: width, height - size of buffer in pixels 2475 * bytesPerValue - bytes per depth value (2 or 4) 2476 * buffer - pointer to depth buffer values 2477 * Return: GL_TRUE or GL_FALSE to indicate success or failure. 2478 */ 2479GLboolean XMesaGetDepthBuffer( XMesaBuffer b, GLint *width, GLint *height, 2480 GLint *bytesPerValue, void **buffer ) 2481{ 2482 if (!b->mesa_buffer.DepthBuffer) { 2483 *width = 0; 2484 *height = 0; 2485 *bytesPerValue = 0; 2486 *buffer = 0; 2487 return GL_FALSE; 2488 } 2489 else { 2490 *width = b->mesa_buffer.Width; 2491 *height = b->mesa_buffer.Height; 2492 *bytesPerValue = sizeof(GLdepth); 2493 *buffer = b->mesa_buffer.DepthBuffer; 2494 return GL_TRUE; 2495 } 2496} 2497 2498 2499void XMesaFlush( XMesaContext c ) 2500{ 2501 if (c && c->xm_visual) { 2502#ifdef XFree86Server 2503 /* NOT_NEEDED */ 2504#else 2505 XSync( c->xm_visual->display, False ); 2506#endif 2507 } 2508} 2509 2510 2511 2512const char *XMesaGetString( XMesaContext c, int name ) 2513{ 2514 (void) c; 2515 if (name==XMESA_VERSION) { 2516 return "3.1"; 2517 } 2518 else if (name==XMESA_EXTENSIONS) { 2519 return ""; 2520 } 2521 else { 2522 return NULL; 2523 } 2524} 2525 2526 2527 2528XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, XMesaDrawable d ) 2529{ 2530 XMesaBuffer b; 2531 for (b=XMesaBufferList; b; b=b->Next) { 2532 if (b->frontbuffer==d && b->display==dpy) { 2533 return b; 2534 } 2535 } 2536 return NULL; 2537} 2538 2539 2540 2541/* 2542 * Look for XMesaBuffers whose X window has been destroyed. 2543 * Deallocate any such XMesaBuffers. 2544 */ 2545void XMesaGarbageCollect( void ) 2546{ 2547 XMesaBuffer b, next; 2548 for (b=XMesaBufferList; b; b=next) { 2549 next = b->Next; 2550 if (!b->pixmap_flag) { 2551#ifdef XFree86Server 2552 /* NOT_NEEDED */ 2553#else 2554 XSync(b->display, False); 2555 if (!window_exists( b->display, b->frontbuffer )) { 2556 /* found a dead window, free the ancillary info */ 2557 XMesaDestroyBuffer( b ); 2558 } 2559#endif 2560 } 2561 } 2562} 2563 2564 2565void XMesaReset( void ) 2566{ 2567 while (XMesaBufferList) 2568 XMesaDestroyBuffer(XMesaBufferList); 2569 2570 XMesaBufferList = NULL; 2571} 2572 2573 2574unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y, 2575 GLfloat red, GLfloat green, 2576 GLfloat blue, GLfloat alpha ) 2577{ 2578 GLint r = (GLint) (red * 255.0F); 2579 GLint g = (GLint) (green * 255.0F); 2580 GLint b = (GLint) (blue * 255.0F); 2581 GLint a = (GLint) (alpha * 255.0F); 2582 2583 switch (xmesa->pixelformat) { 2584 case PF_INDEX: 2585 return 0; 2586 case PF_TRUECOLOR: 2587 { 2588 unsigned long p; 2589 PACK_TRUECOLOR( p, r, g, b ); 2590 return p; 2591 } 2592 case PF_8A8B8G8R: 2593 return PACK_8A8B8G8R( r, g, b, a ); 2594 case PF_8R8G8B: 2595 return PACK_8R8G8B( r, g, b ); 2596 case PF_5R6G5B: 2597 return PACK_5R6G5B( r, g, b ); 2598 case PF_DITHER: 2599 { 2600 DITHER_SETUP; 2601 return DITHER( x, y, r, g, b ); 2602 } 2603 case PF_1BIT: 2604 /* 382 = (3*255)/2 */ 2605 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 2606 case PF_HPCR: 2607 return DITHER_HPCR(x, y, r, g, b); 2608 case PF_LOOKUP: 2609 { 2610 LOOKUP_SETUP; 2611 return LOOKUP( r, g, b ); 2612 } 2613 case PF_GRAYSCALE: 2614 return GRAY_RGB( r, g, b ); 2615 case PF_DITHER_5R6G5B: 2616 /* fall through */ 2617 case PF_TRUEDITHER: 2618 { 2619 unsigned long p; 2620 PACK_TRUEDITHER(p, x, y, r, g, b); 2621 return p; 2622 } 2623 default: 2624 _mesa_problem(NULL, "Bad pixel format in XMesaDitherColor"); 2625 } 2626 return 0; 2627} 2628 2629 2630