xm_api.c revision 9818734e0148510967ca9ee0d1aa8b196b509f02
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Mesa 3-D graphics library 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Version: 7.1 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Permission is hereby granted, free of charge, to any person obtaining a 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * copy of this software and associated documentation files (the "Software"), 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to deal in the Software without restriction, including without limitation 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the rights to use, copy, modify, merge, publish, distribute, sublicense, 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and/or sell copies of the Software, and to permit persons to whom the 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Software is furnished to do so, subject to the following conditions: 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The above copyright notice and this permission notice shall be included 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in all copies or substantial portions of the Software. 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/** 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * \file xm_api.c 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * All the XMesa* API functions. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * NOTES: 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The window coordinate system origin (0,0) is in the lower-left corner 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * of the window. X11's window coordinate origin is in the upper-left 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * corner of the window. Therefore, most drawing functions in this 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * file have to flip Y coordinates. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Define USE_XSHM in the Makefile with -DUSE_XSHM if you want to compile 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in support for the MIT Shared Memory extension. If enabled, when you 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * use an Ximage for the back buffer in double buffered mode, the "swap" 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * operation will be faster. You must also link with -lXext. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Byte swapping: If the Mesa host and the X display use a different 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * byte order then there's some trickiness to be aware of when using 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * XImages. The byte ordering used for the XImage is that of the X 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * display, not the Mesa host. 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The color-to-pixel encoding for True/DirectColor must be done 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * according to the display's visual red_mask, green_mask, and blue_mask. 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If XPutPixel is used to put a pixel into an XImage then XPutPixel will 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * do byte swapping if needed. If one wants to directly "poke" the pixel 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * into the XImage's buffer then the pixel must be byte swapped first. In 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Mesa, when byte swapping is needed we use the PF_TRUECOLOR pixel format 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and use XPutPixel everywhere except in the implementation of 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * glClear(GL_COLOR_BUFFER_BIT). We want this function to be fast so 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * instead of using XPutPixel we "poke" our values after byte-swapping 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the clear pixel value if needed. 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef __CYGWIN__ 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef WIN32 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef __WIN32__ 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "glxheader.h" 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "xmesaP.h" 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/context.h" 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/extensions.h" 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/framebuffer.h" 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/imports.h" 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/macros.h" 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/renderbuffer.h" 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "main/teximage.h" 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "glapi/glthread.h" 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "swrast/swrast.h" 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "swrast_setup/swrast_setup.h" 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "vbo/vbo.h" 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "tnl/tnl.h" 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "tnl/t_context.h" 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "tnl/t_pipeline.h" 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "drivers/common/driverfuncs.h" 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/** 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Global X driver lock 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)_glthread_Mutex _xmesa_lock; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/** 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Lookup tables for HPCR pixel format: 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static short hpcr_rgbTbl[3][256] = { 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}, 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}, 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 48, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55, 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63, 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 64, 64, 65, 65, 66, 66, 67, 67, 68, 68, 69, 69, 70, 70, 71, 71, 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 72, 72, 73, 73, 74, 74, 75, 75, 76, 76, 77, 77, 78, 78, 79, 79, 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 80, 80, 81, 81, 82, 82, 83, 83, 84, 84, 85, 85, 86, 86, 87, 87, 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/***** X Utility Functions *****/ 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/**********************************************************************/ 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/** 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return the host's byte order as LSBFirst or MSBFirst ala X. 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef XFree86Server 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int host_byte_order( void ) 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int i = 1; 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *cptr = (char *) &i; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (*cptr==1) ? LSBFirst : MSBFirst; 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/** 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Check if the X Shared Memory extension is available. 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Return: 0 = not available 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1 = shared XImage support available 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2 = shared Pixmap support available also 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int check_for_xshm( XMesaDisplay *display ) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_XSHM) && !defined(XFree86Server) 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int major, minor, ignore; 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool pixmaps; 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (XQueryExtension( display, "MIT-SHM", &ignore, &ignore, &ignore )) { 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (XShmQueryVersion( display, &major, &minor, &pixmaps )==True) { 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (pixmaps==True) ? 2 : 1; 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* No XSHM support */ 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 198 199 200/** 201 * Apply gamma correction to an intensity value in [0..max]. Return the 202 * new intensity value. 203 */ 204static GLint 205gamma_adjust( GLfloat gamma, GLint value, GLint max ) 206{ 207 if (gamma == 1.0) { 208 return value; 209 } 210 else { 211 double x = (double) value / (double) max; 212 return IROUND_POS((GLfloat) max * _mesa_pow(x, 1.0F/gamma)); 213 } 214} 215 216 217 218/** 219 * Return the true number of bits per pixel for XImages. 220 * For example, if we request a 24-bit deep visual we may actually need/get 221 * 32bpp XImages. This function returns the appropriate bpp. 222 * Input: dpy - the X display 223 * visinfo - desribes the visual to be used for XImages 224 * Return: true number of bits per pixel for XImages 225 */ 226static int 227bits_per_pixel( XMesaVisual xmv ) 228{ 229#ifdef XFree86Server 230 const int depth = xmv->nplanes; 231 int i; 232 assert(depth > 0); 233 for (i = 0; i < screenInfo.numPixmapFormats; i++) { 234 if (screenInfo.formats[i].depth == depth) 235 return screenInfo.formats[i].bitsPerPixel; 236 } 237 return depth; /* should never get here, but this should be safe */ 238#else 239 XMesaDisplay *dpy = xmv->display; 240 XMesaVisualInfo visinfo = xmv->visinfo; 241 XMesaImage *img; 242 int bitsPerPixel; 243 /* Create a temporary XImage */ 244 img = XCreateImage( dpy, visinfo->visual, visinfo->depth, 245 ZPixmap, 0, /*format, offset*/ 246 (char*) MALLOC(8), /*data*/ 247 1, 1, /*width, height*/ 248 32, /*bitmap_pad*/ 249 0 /*bytes_per_line*/ 250 ); 251 assert(img); 252 /* grab the bits/pixel value */ 253 bitsPerPixel = img->bits_per_pixel; 254 /* free the XImage */ 255 _mesa_free( img->data ); 256 img->data = NULL; 257 XMesaDestroyImage( img ); 258 return bitsPerPixel; 259#endif 260} 261 262 263 264/* 265 * Determine if a given X window ID is valid (window exists). 266 * Do this by calling XGetWindowAttributes() for the window and 267 * checking if we catch an X error. 268 * Input: dpy - the display 269 * win - the window to check for existance 270 * Return: GL_TRUE - window exists 271 * GL_FALSE - window doesn't exist 272 */ 273#ifndef XFree86Server 274static GLboolean WindowExistsFlag; 275 276static int window_exists_err_handler( XMesaDisplay* dpy, XErrorEvent* xerr ) 277{ 278 (void) dpy; 279 if (xerr->error_code == BadWindow) { 280 WindowExistsFlag = GL_FALSE; 281 } 282 return 0; 283} 284 285static GLboolean window_exists( XMesaDisplay *dpy, Window win ) 286{ 287 XWindowAttributes wa; 288 int (*old_handler)( XMesaDisplay*, XErrorEvent* ); 289 WindowExistsFlag = GL_TRUE; 290 old_handler = XSetErrorHandler(window_exists_err_handler); 291 XGetWindowAttributes( dpy, win, &wa ); /* dummy request */ 292 XSetErrorHandler(old_handler); 293 return WindowExistsFlag; 294} 295 296static Status 297get_drawable_size( XMesaDisplay *dpy, Drawable d, GLuint *width, GLuint *height ) 298{ 299 Window root; 300 Status stat; 301 int xpos, ypos; 302 unsigned int w, h, bw, depth; 303 stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth); 304 *width = w; 305 *height = h; 306 return stat; 307} 308#endif 309 310 311/** 312 * Return the size of the window (or pixmap) that corresponds to the 313 * given XMesaBuffer. 314 * \param width returns width in pixels 315 * \param height returns height in pixels 316 */ 317void 318xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b, 319 GLuint *width, GLuint *height) 320{ 321#ifdef XFree86Server 322 *width = MIN2(b->frontxrb->drawable->width, MAX_WIDTH); 323 *height = MIN2(b->frontxrb->drawable->height, MAX_HEIGHT); 324#else 325 Status stat; 326 327 _glthread_LOCK_MUTEX(_xmesa_lock); 328 XSync(b->xm_visual->display, 0); /* added for Chromium */ 329 stat = get_drawable_size(dpy, b->frontxrb->pixmap, width, height); 330 _glthread_UNLOCK_MUTEX(_xmesa_lock); 331 332 if (!stat) { 333 /* probably querying a window that's recently been destroyed */ 334 _mesa_warning(NULL, "XGetGeometry failed!\n"); 335 *width = *height = 1; 336 } 337#endif 338} 339 340 341 342/**********************************************************************/ 343/***** Linked list of XMesaBuffers *****/ 344/**********************************************************************/ 345 346XMesaBuffer XMesaBufferList = NULL; 347 348 349/** 350 * Allocate a new XMesaBuffer object which corresponds to the given drawable. 351 * Note that XMesaBuffer is derived from GLframebuffer. 352 * The new XMesaBuffer will not have any size (Width=Height=0). 353 * 354 * \param d the corresponding X drawable (window or pixmap) 355 * \param type either WINDOW, PIXMAP or PBUFFER, describing d 356 * \param vis the buffer's visual 357 * \param cmap the window's colormap, if known. 358 * \return new XMesaBuffer or NULL if any problem 359 */ 360static XMesaBuffer 361create_xmesa_buffer(XMesaDrawable d, BufferType type, 362 XMesaVisual vis, XMesaColormap cmap) 363{ 364 XMesaBuffer b; 365 366 ASSERT(type == WINDOW || type == PIXMAP || type == PBUFFER); 367 368 b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer); 369 if (!b) 370 return NULL; 371 372 b->display = vis->display; 373 b->xm_visual = vis; 374 b->type = type; 375 b->cmap = cmap; 376 377 _mesa_initialize_framebuffer(&b->mesa_buffer, &vis->mesa_visual); 378 b->mesa_buffer.Delete = xmesa_delete_framebuffer; 379 380 /* 381 * Front renderbuffer 382 */ 383 b->frontxrb = xmesa_new_renderbuffer(NULL, 0, &vis->mesa_visual, GL_FALSE); 384 if (!b->frontxrb) { 385 _mesa_free(b); 386 return NULL; 387 } 388 b->frontxrb->Parent = b; 389 b->frontxrb->drawable = d; 390 b->frontxrb->pixmap = (XMesaPixmap) d; 391 _mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_FRONT_LEFT, 392 &b->frontxrb->Base); 393 394 /* 395 * Back renderbuffer 396 */ 397 if (vis->mesa_visual.doubleBufferMode) { 398 b->backxrb = xmesa_new_renderbuffer(NULL, 0, &vis->mesa_visual, GL_TRUE); 399 if (!b->backxrb) { 400 /* XXX free front xrb too */ 401 _mesa_free(b); 402 return NULL; 403 } 404 b->backxrb->Parent = b; 405 /* determine back buffer implementation */ 406 b->db_mode = vis->ximage_flag ? BACK_XIMAGE : BACK_PIXMAP; 407 408 _mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_BACK_LEFT, 409 &b->backxrb->Base); 410 } 411 412 /* 413 * Software alpha planes 414 */ 415 if (vis->mesa_visual.alphaBits > 0 416 && vis->undithered_pf != PF_8A8B8G8R 417 && vis->undithered_pf != PF_8A8R8G8B) { 418 /* Visual has alpha, but pixel format doesn't support it. 419 * We'll use an alpha renderbuffer wrapper. 420 */ 421 b->swAlpha = GL_TRUE; 422 } 423 else { 424 b->swAlpha = GL_FALSE; 425 } 426 427 /* 428 * Other renderbuffer (depth, stencil, etc) 429 */ 430 _mesa_add_soft_renderbuffers(&b->mesa_buffer, 431 GL_FALSE, /* color */ 432 vis->mesa_visual.haveDepthBuffer, 433 vis->mesa_visual.haveStencilBuffer, 434 vis->mesa_visual.haveAccumBuffer, 435 b->swAlpha, 436 vis->mesa_visual.numAuxBuffers > 0 ); 437 438 /* GLX_EXT_texture_from_pixmap */ 439 b->TextureTarget = 0; 440 b->TextureFormat = GLX_TEXTURE_FORMAT_NONE_EXT; 441 b->TextureMipmap = 0; 442 443 /* insert buffer into linked list */ 444 b->Next = XMesaBufferList; 445 XMesaBufferList = b; 446 447 return b; 448} 449 450 451/** 452 * Find an XMesaBuffer by matching X display and colormap but NOT matching 453 * the notThis buffer. 454 */ 455XMesaBuffer 456xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis) 457{ 458 XMesaBuffer b; 459 for (b=XMesaBufferList; b; b=b->Next) { 460 if (b->display==dpy && b->cmap==cmap && b!=notThis) { 461 return b; 462 } 463 } 464 return NULL; 465} 466 467 468/** 469 * Remove buffer from linked list, delete if no longer referenced. 470 */ 471static void 472xmesa_free_buffer(XMesaBuffer buffer) 473{ 474 XMesaBuffer prev = NULL, b; 475 476 for (b = XMesaBufferList; b; b = b->Next) { 477 if (b == buffer) { 478 struct gl_framebuffer *fb = &buffer->mesa_buffer; 479 480 /* unlink buffer from list */ 481 if (prev) 482 prev->Next = buffer->Next; 483 else 484 XMesaBufferList = buffer->Next; 485 486 /* mark as delete pending */ 487 fb->DeletePending = GL_TRUE; 488 489 /* Since the X window for the XMesaBuffer is going away, we don't 490 * want to dereference this pointer in the future. 491 */ 492 b->frontxrb->drawable = 0; 493 494 /* Unreference. If count = zero we'll really delete the buffer */ 495 _mesa_reference_framebuffer(&fb, NULL); 496 497 return; 498 } 499 /* continue search */ 500 prev = b; 501 } 502 /* buffer not found in XMesaBufferList */ 503 _mesa_problem(NULL,"xmesa_free_buffer() - buffer not found\n"); 504} 505 506 507/** 508 * Copy X color table stuff from one XMesaBuffer to another. 509 */ 510static void 511copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src) 512{ 513 MEMCPY(dst->color_table, src->color_table, sizeof(src->color_table)); 514 MEMCPY(dst->pixel_to_r, src->pixel_to_r, sizeof(src->pixel_to_r)); 515 MEMCPY(dst->pixel_to_g, src->pixel_to_g, sizeof(src->pixel_to_g)); 516 MEMCPY(dst->pixel_to_b, src->pixel_to_b, sizeof(src->pixel_to_b)); 517 dst->num_alloced = src->num_alloced; 518 MEMCPY(dst->alloced_colors, src->alloced_colors, 519 sizeof(src->alloced_colors)); 520} 521 522 523 524/**********************************************************************/ 525/***** Misc Private Functions *****/ 526/**********************************************************************/ 527 528 529/** 530 * A replacement for XAllocColor. This function should never 531 * fail to allocate a color. When XAllocColor fails, we return 532 * the nearest matching color. If we have to allocate many colors 533 * this function isn't too efficient; the XQueryColors() could be 534 * done just once. 535 * Written by Michael Pichler, Brian Paul, Mark Kilgard 536 * Input: dpy - X display 537 * cmap - X colormap 538 * cmapSize - size of colormap 539 * In/Out: color - the XColor struct 540 * Output: exact - 1=exact color match, 0=closest match 541 * alloced - 1=XAlloc worked, 0=XAlloc failed 542 */ 543static void 544noFaultXAllocColor( int client, 545 XMesaDisplay *dpy, 546 XMesaColormap cmap, 547 int cmapSize, 548 XMesaColor *color, 549 int *exact, int *alloced ) 550{ 551#ifdef XFree86Server 552 Pixel *ppixIn; 553 xrgb *ctable; 554#else 555 /* we'll try to cache ctable for better remote display performance */ 556 static Display *prevDisplay = NULL; 557 static XMesaColormap prevCmap = 0; 558 static int prevCmapSize = 0; 559 static XMesaColor *ctable = NULL; 560#endif 561 XMesaColor subColor; 562 int i, bestmatch; 563 double mindist; /* 3*2^16^2 exceeds long int precision. */ 564 565 (void) client; 566 567 /* First try just using XAllocColor. */ 568#ifdef XFree86Server 569 if (AllocColor(cmap, 570 &color->red, &color->green, &color->blue, 571 &color->pixel, 572 client) == Success) 573#else 574 if (XAllocColor(dpy, cmap, color)) 575#endif 576 { 577 *exact = 1; 578 *alloced = 1; 579 return; 580 } 581 582 /* Alloc failed, search for closest match */ 583 584 /* Retrieve color table entries. */ 585 /* XXX alloca candidate. */ 586#ifdef XFree86Server 587 ppixIn = (Pixel *) MALLOC(cmapSize * sizeof(Pixel)); 588 ctable = (xrgb *) MALLOC(cmapSize * sizeof(xrgb)); 589 for (i = 0; i < cmapSize; i++) { 590 ppixIn[i] = i; 591 } 592 QueryColors(cmap, cmapSize, ppixIn, ctable); 593#else 594 if (prevDisplay != dpy || prevCmap != cmap 595 || prevCmapSize != cmapSize || !ctable) { 596 /* free previously cached color table */ 597 if (ctable) 598 _mesa_free(ctable); 599 /* Get the color table from X */ 600 ctable = (XMesaColor *) MALLOC(cmapSize * sizeof(XMesaColor)); 601 assert(ctable); 602 for (i = 0; i < cmapSize; i++) { 603 ctable[i].pixel = i; 604 } 605 XQueryColors(dpy, cmap, ctable, cmapSize); 606 prevDisplay = dpy; 607 prevCmap = cmap; 608 prevCmapSize = cmapSize; 609 } 610#endif 611 612 /* Find best match. */ 613 bestmatch = -1; 614 mindist = 0.0; 615 for (i = 0; i < cmapSize; i++) { 616 double dr = 0.30 * ((double) color->red - (double) ctable[i].red); 617 double dg = 0.59 * ((double) color->green - (double) ctable[i].green); 618 double db = 0.11 * ((double) color->blue - (double) ctable[i].blue); 619 double dist = dr * dr + dg * dg + db * db; 620 if (bestmatch < 0 || dist < mindist) { 621 bestmatch = i; 622 mindist = dist; 623 } 624 } 625 626 /* Return result. */ 627 subColor.red = ctable[bestmatch].red; 628 subColor.green = ctable[bestmatch].green; 629 subColor.blue = ctable[bestmatch].blue; 630 /* Try to allocate the closest match color. This should only 631 * fail if the cell is read/write. Otherwise, we're incrementing 632 * the cell's reference count. 633 */ 634#ifdef XFree86Server 635 if (AllocColor(cmap, 636 &subColor.red, &subColor.green, &subColor.blue, 637 &subColor.pixel, 638 client) == Success) { 639#else 640 if (XAllocColor(dpy, cmap, &subColor)) { 641#endif 642 *alloced = 1; 643 } 644 else { 645 /* do this to work around a problem reported by Frank Ortega */ 646 subColor.pixel = (unsigned long) bestmatch; 647 subColor.red = ctable[bestmatch].red; 648 subColor.green = ctable[bestmatch].green; 649 subColor.blue = ctable[bestmatch].blue; 650 subColor.flags = DoRed | DoGreen | DoBlue; 651 *alloced = 0; 652 } 653#ifdef XFree86Server 654 _mesa_free(ppixIn); 655 _mesa_free(ctable); 656#else 657 /* don't free table, save it for next time */ 658#endif 659 660 *color = subColor; 661 *exact = 0; 662} 663 664 665 666/** 667 * Do setup for PF_GRAYSCALE pixel format. 668 * Note that buffer may be NULL. 669 */ 670static GLboolean 671setup_grayscale(int client, XMesaVisual v, 672 XMesaBuffer buffer, XMesaColormap cmap) 673{ 674 if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { 675 return GL_FALSE; 676 } 677 678 if (buffer) { 679 XMesaBuffer prevBuffer; 680 681 if (!cmap) { 682 return GL_FALSE; 683 } 684 685 prevBuffer = xmesa_find_buffer(v->display, cmap, buffer); 686 if (prevBuffer && 687 (buffer->xm_visual->mesa_visual.rgbMode == 688 prevBuffer->xm_visual->mesa_visual.rgbMode)) { 689 /* Copy colormap stuff from previous XMesaBuffer which uses same 690 * X colormap. Do this to avoid time spent in noFaultXAllocColor. 691 */ 692 copy_colortable_info(buffer, prevBuffer); 693 } 694 else { 695 /* Allocate 256 shades of gray */ 696 int gray; 697 int colorsfailed = 0; 698 for (gray=0;gray<256;gray++) { 699 GLint r = gamma_adjust( v->RedGamma, gray, 255 ); 700 GLint g = gamma_adjust( v->GreenGamma, gray, 255 ); 701 GLint b = gamma_adjust( v->BlueGamma, gray, 255 ); 702 int exact, alloced; 703 XMesaColor xcol; 704 xcol.red = (r << 8) | r; 705 xcol.green = (g << 8) | g; 706 xcol.blue = (b << 8) | b; 707 noFaultXAllocColor( client, v->display, 708 cmap, GET_COLORMAP_SIZE(v), 709 &xcol, &exact, &alloced ); 710 if (!exact) { 711 colorsfailed++; 712 } 713 if (alloced) { 714 assert(buffer->num_alloced<256); 715 buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; 716 buffer->num_alloced++; 717 } 718 719 /*OLD 720 assert(gray < 576); 721 buffer->color_table[gray*3+0] = xcol.pixel; 722 buffer->color_table[gray*3+1] = xcol.pixel; 723 buffer->color_table[gray*3+2] = xcol.pixel; 724 assert(xcol.pixel < 65536); 725 buffer->pixel_to_r[xcol.pixel] = gray * 30 / 100; 726 buffer->pixel_to_g[xcol.pixel] = gray * 59 / 100; 727 buffer->pixel_to_b[xcol.pixel] = gray * 11 / 100; 728 */ 729 buffer->color_table[gray] = xcol.pixel; 730 assert(xcol.pixel < 65536); 731 buffer->pixel_to_r[xcol.pixel] = gray; 732 buffer->pixel_to_g[xcol.pixel] = gray; 733 buffer->pixel_to_b[xcol.pixel] = gray; 734 } 735 736 if (colorsfailed && _mesa_getenv("MESA_DEBUG")) { 737 _mesa_warning(NULL, 738 "Note: %d out of 256 needed colors do not match exactly.\n", 739 colorsfailed ); 740 } 741 } 742 } 743 744 v->dithered_pf = PF_Grayscale; 745 v->undithered_pf = PF_Grayscale; 746 return GL_TRUE; 747} 748 749 750 751/** 752 * Setup RGB rendering for a window with a PseudoColor, StaticColor, 753 * or 8-bit TrueColor visual visual. We try to allocate a palette of 225 754 * colors (5 red, 9 green, 5 blue) and dither to approximate a 24-bit RGB 755 * color. While this function was originally designed just for 8-bit 756 * visuals, it has also proven to work from 4-bit up to 16-bit visuals. 757 * Dithering code contributed by Bob Mercier. 758 */ 759static GLboolean 760setup_dithered_color(int client, XMesaVisual v, 761 XMesaBuffer buffer, XMesaColormap cmap) 762{ 763 if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { 764 return GL_FALSE; 765 } 766 767 if (buffer) { 768 XMesaBuffer prevBuffer; 769 770 if (!cmap) { 771 return GL_FALSE; 772 } 773 774 prevBuffer = xmesa_find_buffer(v->display, cmap, buffer); 775 if (prevBuffer && 776 (buffer->xm_visual->mesa_visual.rgbMode == 777 prevBuffer->xm_visual->mesa_visual.rgbMode)) { 778 /* Copy colormap stuff from previous, matching XMesaBuffer. 779 * Do this to avoid time spent in noFaultXAllocColor. 780 */ 781 copy_colortable_info(buffer, prevBuffer); 782 } 783 else { 784 /* Allocate X colors and initialize color_table[], red_table[], etc */ 785 int r, g, b, i; 786 int colorsfailed = 0; 787 for (r = 0; r < DITH_R; r++) { 788 for (g = 0; g < DITH_G; g++) { 789 for (b = 0; b < DITH_B; b++) { 790 XMesaColor xcol; 791 int exact, alloced; 792 xcol.red =gamma_adjust(v->RedGamma, r*65535/(DITH_R-1),65535); 793 xcol.green=gamma_adjust(v->GreenGamma, g*65535/(DITH_G-1),65535); 794 xcol.blue =gamma_adjust(v->BlueGamma, b*65535/(DITH_B-1),65535); 795 noFaultXAllocColor( client, v->display, 796 cmap, GET_COLORMAP_SIZE(v), 797 &xcol, &exact, &alloced ); 798 if (!exact) { 799 colorsfailed++; 800 } 801 if (alloced) { 802 assert(buffer->num_alloced<256); 803 buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; 804 buffer->num_alloced++; 805 } 806 i = DITH_MIX( r, g, b ); 807 assert(i < 576); 808 buffer->color_table[i] = xcol.pixel; 809 assert(xcol.pixel < 65536); 810 buffer->pixel_to_r[xcol.pixel] = r * 255 / (DITH_R-1); 811 buffer->pixel_to_g[xcol.pixel] = g * 255 / (DITH_G-1); 812 buffer->pixel_to_b[xcol.pixel] = b * 255 / (DITH_B-1); 813 } 814 } 815 } 816 817 if (colorsfailed && _mesa_getenv("MESA_DEBUG")) { 818 _mesa_warning(NULL, 819 "Note: %d out of %d needed colors do not match exactly.\n", 820 colorsfailed, DITH_R * DITH_G * DITH_B ); 821 } 822 } 823 } 824 825 v->dithered_pf = PF_Dither; 826 v->undithered_pf = PF_Lookup; 827 return GL_TRUE; 828} 829 830 831/** 832 * Setup for Hewlett Packard Color Recovery 8-bit TrueColor mode. 833 * HPCR simulates 24-bit color fidelity with an 8-bit frame buffer. 834 * Special dithering tables have to be initialized. 835 */ 836static void 837setup_8bit_hpcr(XMesaVisual v) 838{ 839 /* HP Color Recovery contributed by: Alex De Bruyn (ad@lms.be) 840 * To work properly, the atom _HP_RGB_SMOOTH_MAP_LIST must be defined 841 * on the root window AND the colormap obtainable by XGetRGBColormaps 842 * for that atom must be set on the window. (see also tkInitWindow) 843 * If that colormap is not set, the output will look stripy. 844 */ 845 846 /* Setup color tables with gamma correction */ 847 int i; 848 double g; 849 850 g = 1.0 / v->RedGamma; 851 for (i=0; i<256; i++) { 852 GLint red = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[0][i]/255.0, g )); 853 v->hpcr_rgbTbl[0][i] = CLAMP( red, 16, 239 ); 854 } 855 856 g = 1.0 / v->GreenGamma; 857 for (i=0; i<256; i++) { 858 GLint green = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[1][i]/255.0, g )); 859 v->hpcr_rgbTbl[1][i] = CLAMP( green, 16, 239 ); 860 } 861 862 g = 1.0 / v->BlueGamma; 863 for (i=0; i<256; i++) { 864 GLint blue = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[2][i]/255.0, g )); 865 v->hpcr_rgbTbl[2][i] = CLAMP( blue, 32, 223 ); 866 } 867 v->undithered_pf = PF_HPCR; /* can't really disable dithering for now */ 868 v->dithered_pf = PF_HPCR; 869 870 /* which method should I use to clear */ 871 /* GL_FALSE: keep the ordinary method */ 872 /* GL_TRUE : clear with dither pattern */ 873 v->hpcr_clear_flag = _mesa_getenv("MESA_HPCR_CLEAR") ? GL_TRUE : GL_FALSE; 874 875 if (v->hpcr_clear_flag) { 876 v->hpcr_clear_pixmap = XMesaCreatePixmap(v->display, 877 DefaultRootWindow(v->display), 878 16, 2, 8); 879#ifndef XFree86Server 880 v->hpcr_clear_ximage = XGetImage(v->display, v->hpcr_clear_pixmap, 881 0, 0, 16, 2, AllPlanes, ZPixmap); 882#endif 883 } 884} 885 886 887/** 888 * Setup RGB rendering for a window with a True/DirectColor visual. 889 */ 890static void 891setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap) 892{ 893 unsigned long rmask, gmask, bmask; 894 (void) buffer; 895 (void) cmap; 896 897 /* Compute red multiplier (mask) and bit shift */ 898 v->rshift = 0; 899 rmask = GET_REDMASK(v); 900 while ((rmask & 1)==0) { 901 v->rshift++; 902 rmask = rmask >> 1; 903 } 904 905 /* Compute green multiplier (mask) and bit shift */ 906 v->gshift = 0; 907 gmask = GET_GREENMASK(v); 908 while ((gmask & 1)==0) { 909 v->gshift++; 910 gmask = gmask >> 1; 911 } 912 913 /* Compute blue multiplier (mask) and bit shift */ 914 v->bshift = 0; 915 bmask = GET_BLUEMASK(v); 916 while ((bmask & 1)==0) { 917 v->bshift++; 918 bmask = bmask >> 1; 919 } 920 921 /* 922 * Compute component-to-pixel lookup tables and dithering kernel 923 */ 924 { 925 static GLubyte kernel[16] = { 926 0*16, 8*16, 2*16, 10*16, 927 12*16, 4*16, 14*16, 6*16, 928 3*16, 11*16, 1*16, 9*16, 929 15*16, 7*16, 13*16, 5*16, 930 }; 931 GLint rBits = _mesa_bitcount(rmask); 932 GLint gBits = _mesa_bitcount(gmask); 933 GLint bBits = _mesa_bitcount(bmask); 934 GLint maxBits; 935 GLuint i; 936 937 /* convert pixel components in [0,_mask] to RGB values in [0,255] */ 938 for (i=0; i<=rmask; i++) 939 v->PixelToR[i] = (unsigned char) ((i * 255) / rmask); 940 for (i=0; i<=gmask; i++) 941 v->PixelToG[i] = (unsigned char) ((i * 255) / gmask); 942 for (i=0; i<=bmask; i++) 943 v->PixelToB[i] = (unsigned char) ((i * 255) / bmask); 944 945 /* convert RGB values from [0,255] to pixel components */ 946 947 for (i=0;i<256;i++) { 948 GLint r = gamma_adjust(v->RedGamma, i, 255); 949 GLint g = gamma_adjust(v->GreenGamma, i, 255); 950 GLint b = gamma_adjust(v->BlueGamma, i, 255); 951 v->RtoPixel[i] = (r >> (8-rBits)) << v->rshift; 952 v->GtoPixel[i] = (g >> (8-gBits)) << v->gshift; 953 v->BtoPixel[i] = (b >> (8-bBits)) << v->bshift; 954 } 955 /* overflow protection */ 956 for (i=256;i<512;i++) { 957 v->RtoPixel[i] = v->RtoPixel[255]; 958 v->GtoPixel[i] = v->GtoPixel[255]; 959 v->BtoPixel[i] = v->BtoPixel[255]; 960 } 961 962 /* setup dithering kernel */ 963 maxBits = rBits; 964 if (gBits > maxBits) maxBits = gBits; 965 if (bBits > maxBits) maxBits = bBits; 966 for (i=0;i<16;i++) { 967 v->Kernel[i] = kernel[i] >> maxBits; 968 } 969 970 v->undithered_pf = PF_Truecolor; 971 v->dithered_pf = (GET_VISUAL_DEPTH(v)<24) ? PF_Dither_True : PF_Truecolor; 972 } 973 974 /* 975 * Now check for TrueColor visuals which we can optimize. 976 */ 977 if ( GET_REDMASK(v) ==0x0000ff 978 && GET_GREENMASK(v)==0x00ff00 979 && GET_BLUEMASK(v) ==0xff0000 980 && CHECK_BYTE_ORDER(v) 981 && v->BitsPerPixel==32 982 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 983 /* common 32 bpp config used on SGI, Sun */ 984 v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; /* ABGR */ 985 } 986 else if (GET_REDMASK(v) == 0xff0000 987 && GET_GREENMASK(v)== 0x00ff00 988 && GET_BLUEMASK(v) == 0x0000ff 989 && CHECK_BYTE_ORDER(v) 990 && v->RedGamma == 1.0 && v->GreenGamma == 1.0 && v->BlueGamma == 1.0){ 991 if (v->BitsPerPixel==32) { 992 /* if 32 bpp, and visual indicates 8 bpp alpha channel */ 993 if (GET_VISUAL_DEPTH(v) == 32 && v->mesa_visual.alphaBits == 8) 994 v->undithered_pf = v->dithered_pf = PF_8A8R8G8B; /* ARGB */ 995 else 996 v->undithered_pf = v->dithered_pf = PF_8R8G8B; /* xRGB */ 997 } 998 else if (v->BitsPerPixel == 24) { 999 v->undithered_pf = v->dithered_pf = PF_8R8G8B24; /* RGB */ 1000 } 1001 } 1002 else if (GET_REDMASK(v) ==0xf800 1003 && GET_GREENMASK(v)==0x07e0 1004 && GET_BLUEMASK(v) ==0x001f 1005 && CHECK_BYTE_ORDER(v) 1006 && v->BitsPerPixel==16 1007 && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { 1008 /* 5-6-5 RGB */ 1009 v->undithered_pf = PF_5R6G5B; 1010 v->dithered_pf = PF_Dither_5R6G5B; 1011 } 1012 else if (GET_REDMASK(v) ==0xe0 1013 && GET_GREENMASK(v)==0x1c 1014 && GET_BLUEMASK(v) ==0x03 1015 && CHECK_FOR_HPCR(v)) { 1016 /* 8-bit HP color recovery */ 1017 setup_8bit_hpcr( v ); 1018 } 1019} 1020 1021 1022 1023/** 1024 * Setup RGB rendering for a window with a monochrome visual. 1025 */ 1026static void 1027setup_monochrome( XMesaVisual v, XMesaBuffer b ) 1028{ 1029 (void) b; 1030 v->dithered_pf = v->undithered_pf = PF_1Bit; 1031 /* if black=1 then we must flip pixel values */ 1032 v->bitFlip = (GET_BLACK_PIXEL(v) != 0); 1033} 1034 1035 1036 1037/** 1038 * When a context is bound for the first time, we can finally finish 1039 * initializing the context's visual and buffer information. 1040 * \param v the XMesaVisual to initialize 1041 * \param b the XMesaBuffer to initialize (may be NULL) 1042 * \param rgb_flag TRUE = RGBA mode, FALSE = color index mode 1043 * \param window the window/pixmap we're rendering into 1044 * \param cmap the colormap associated with the window/pixmap 1045 * \return GL_TRUE=success, GL_FALSE=failure 1046 */ 1047static GLboolean 1048initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b, 1049 GLboolean rgb_flag, XMesaDrawable window, 1050 XMesaColormap cmap) 1051{ 1052 int client = 0; 1053 1054#ifdef XFree86Server 1055 client = (window) ? CLIENT_ID(window->id) : 0; 1056#endif 1057 1058 ASSERT(!b || b->xm_visual == v); 1059 1060 /* Save true bits/pixel */ 1061 v->BitsPerPixel = bits_per_pixel(v); 1062 assert(v->BitsPerPixel > 0); 1063 1064 if (rgb_flag == GL_FALSE) { 1065 /* COLOR-INDEXED WINDOW: 1066 * Even if the visual is TrueColor or DirectColor we treat it as 1067 * being color indexed. This is weird but might be useful to someone. 1068 */ 1069 v->dithered_pf = v->undithered_pf = PF_Index; 1070 v->mesa_visual.indexBits = GET_VISUAL_DEPTH(v); 1071 } 1072 else { 1073 /* RGB WINDOW: 1074 * We support RGB rendering into almost any kind of visual. 1075 */ 1076 const int xclass = v->mesa_visual.visualType; 1077 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 1078 setup_truecolor( v, b, cmap ); 1079 } 1080 else if (xclass == GLX_STATIC_GRAY && GET_VISUAL_DEPTH(v) == 1) { 1081 setup_monochrome( v, b ); 1082 } 1083 else if (xclass == GLX_GRAY_SCALE || xclass == GLX_STATIC_GRAY) { 1084 if (!setup_grayscale( client, v, b, cmap )) { 1085 return GL_FALSE; 1086 } 1087 } 1088 else if ((xclass == GLX_PSEUDO_COLOR || xclass == GLX_STATIC_COLOR) 1089 && GET_VISUAL_DEPTH(v)>=4 && GET_VISUAL_DEPTH(v)<=16) { 1090 if (!setup_dithered_color( client, v, b, cmap )) { 1091 return GL_FALSE; 1092 } 1093 } 1094 else { 1095 _mesa_warning(NULL, "XMesa: RGB mode rendering not supported in given visual.\n"); 1096 return GL_FALSE; 1097 } 1098 v->mesa_visual.indexBits = 0; 1099 1100 if (_mesa_getenv("MESA_NO_DITHER")) { 1101 v->dithered_pf = v->undithered_pf; 1102 } 1103 } 1104 1105 1106 /* 1107 * If MESA_INFO env var is set print out some debugging info 1108 * which can help Brian figure out what's going on when a user 1109 * reports bugs. 1110 */ 1111 if (_mesa_getenv("MESA_INFO")) { 1112 _mesa_printf("X/Mesa visual = %p\n", (void *) v); 1113 _mesa_printf("X/Mesa dithered pf = %u\n", v->dithered_pf); 1114 _mesa_printf("X/Mesa undithered pf = %u\n", v->undithered_pf); 1115 _mesa_printf("X/Mesa level = %d\n", v->mesa_visual.level); 1116 _mesa_printf("X/Mesa depth = %d\n", GET_VISUAL_DEPTH(v)); 1117 _mesa_printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel); 1118 } 1119 1120 if (b && window) { 1121 char *data; 1122 1123 /* Do window-specific initializations */ 1124 1125 /* these should have been set in create_xmesa_buffer */ 1126 ASSERT(b->frontxrb->drawable == window); 1127 ASSERT(b->frontxrb->pixmap == (XMesaPixmap) window); 1128 1129 /* Setup for single/double buffering */ 1130 if (v->mesa_visual.doubleBufferMode) { 1131 /* Double buffered */ 1132 b->shm = check_for_xshm( v->display ); 1133 } 1134 1135 /* X11 graphics contexts */ 1136#ifdef XFree86Server 1137 b->gc = CreateScratchGC(v->display, window->depth); 1138#else 1139 b->gc = XCreateGC( v->display, window, 0, NULL ); 1140#endif 1141 XMesaSetFunction( v->display, b->gc, GXcopy ); 1142 1143 /* cleargc - for glClear() */ 1144#ifdef XFree86Server 1145 b->cleargc = CreateScratchGC(v->display, window->depth); 1146#else 1147 b->cleargc = XCreateGC( v->display, window, 0, NULL ); 1148#endif 1149 XMesaSetFunction( v->display, b->cleargc, GXcopy ); 1150 1151 /* 1152 * Don't generate Graphics Expose/NoExpose events in swapbuffers(). 1153 * Patch contributed by Michael Pichler May 15, 1995. 1154 */ 1155#ifdef XFree86Server 1156 b->swapgc = CreateScratchGC(v->display, window->depth); 1157 { 1158 CARD32 v[1]; 1159 v[0] = FALSE; 1160 dixChangeGC(NullClient, b->swapgc, GCGraphicsExposures, v, NULL); 1161 } 1162#else 1163 { 1164 XGCValues gcvalues; 1165 gcvalues.graphics_exposures = False; 1166 b->swapgc = XCreateGC(v->display, window, 1167 GCGraphicsExposures, &gcvalues); 1168 } 1169#endif 1170 XMesaSetFunction( v->display, b->swapgc, GXcopy ); 1171 /* 1172 * Set fill style and tile pixmap once for all for HPCR stuff 1173 * (instead of doing it each time in clear_color_HPCR_pixmap()) 1174 * Initialize whole stuff 1175 * Patch contributed by Jacques Leroy March 8, 1998. 1176 */ 1177 if (v->hpcr_clear_flag && b->backxrb && b->backxrb->pixmap) { 1178 int i; 1179 for (i = 0; i < 16; i++) { 1180 XMesaPutPixel(v->hpcr_clear_ximage, i, 0, 0); 1181 XMesaPutPixel(v->hpcr_clear_ximage, i, 1, 0); 1182 } 1183 XMesaPutImage(b->display, (XMesaDrawable) v->hpcr_clear_pixmap, 1184 b->cleargc, v->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); 1185 XMesaSetFillStyle( v->display, b->cleargc, FillTiled); 1186 XMesaSetTile( v->display, b->cleargc, v->hpcr_clear_pixmap ); 1187 } 1188 1189 /* Initialize the row buffer XImage for use in write_color_span() */ 1190 data = (char*) MALLOC(MAX_WIDTH*4); 1191#ifdef XFree86Server 1192 b->rowimage = XMesaCreateImage(GET_VISUAL_DEPTH(v), MAX_WIDTH, 1, data); 1193#else 1194 b->rowimage = XCreateImage( v->display, 1195 v->visinfo->visual, 1196 v->visinfo->depth, 1197 ZPixmap, 0, /*format, offset*/ 1198 data, /*data*/ 1199 MAX_WIDTH, 1, /*width, height*/ 1200 32, /*bitmap_pad*/ 1201 0 /*bytes_per_line*/ ); 1202#endif 1203 if (!b->rowimage) 1204 return GL_FALSE; 1205 } 1206 1207 return GL_TRUE; 1208} 1209 1210 1211 1212/* 1213 * Convert an RGBA color to a pixel value. 1214 */ 1215unsigned long 1216xmesa_color_to_pixel(GLcontext *ctx, 1217 GLubyte r, GLubyte g, GLubyte b, GLubyte a, 1218 GLuint pixelFormat) 1219{ 1220 XMesaContext xmesa = XMESA_CONTEXT(ctx); 1221 switch (pixelFormat) { 1222 case PF_Index: 1223 return 0; 1224 case PF_Truecolor: 1225 { 1226 unsigned long p; 1227 PACK_TRUECOLOR( p, r, g, b ); 1228 return p; 1229 } 1230 case PF_8A8B8G8R: 1231 return PACK_8A8B8G8R( r, g, b, a ); 1232 case PF_8A8R8G8B: 1233 return PACK_8A8R8G8B( r, g, b, a ); 1234 case PF_8R8G8B: 1235 /* fall through */ 1236 case PF_8R8G8B24: 1237 return PACK_8R8G8B( r, g, b ); 1238 case PF_5R6G5B: 1239 return PACK_5R6G5B( r, g, b ); 1240 case PF_Dither: 1241 { 1242 DITHER_SETUP; 1243 return DITHER( 1, 0, r, g, b ); 1244 } 1245 case PF_1Bit: 1246 /* 382 = (3*255)/2 */ 1247 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 1248 case PF_HPCR: 1249 return DITHER_HPCR(1, 1, r, g, b); 1250 case PF_Lookup: 1251 { 1252 LOOKUP_SETUP; 1253 return LOOKUP( r, g, b ); 1254 } 1255 case PF_Grayscale: 1256 return GRAY_RGB( r, g, b ); 1257 case PF_Dither_True: 1258 /* fall through */ 1259 case PF_Dither_5R6G5B: 1260 { 1261 unsigned long p; 1262 PACK_TRUEDITHER(p, 1, 0, r, g, b); 1263 return p; 1264 } 1265 default: 1266 _mesa_problem(ctx, "Bad pixel format in xmesa_color_to_pixel"); 1267 } 1268 return 0; 1269} 1270 1271 1272#define NUM_VISUAL_TYPES 6 1273 1274/** 1275 * Convert an X visual type to a GLX visual type. 1276 * 1277 * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.) 1278 * to be converted. 1279 * \return If \c visualType is a valid X visual type, a GLX visual type will 1280 * be returned. Otherwise \c GLX_NONE will be returned. 1281 * 1282 * \note 1283 * This code was lifted directly from lib/GL/glx/glcontextmodes.c in the 1284 * DRI CVS tree. 1285 */ 1286static GLint 1287xmesa_convert_from_x_visual_type( int visualType ) 1288{ 1289 static const int glx_visual_types[ NUM_VISUAL_TYPES ] = { 1290 GLX_STATIC_GRAY, GLX_GRAY_SCALE, 1291 GLX_STATIC_COLOR, GLX_PSEUDO_COLOR, 1292 GLX_TRUE_COLOR, GLX_DIRECT_COLOR 1293 }; 1294 1295 return ( (unsigned) visualType < NUM_VISUAL_TYPES ) 1296 ? glx_visual_types[ visualType ] : GLX_NONE; 1297} 1298 1299 1300/**********************************************************************/ 1301/***** Public Functions *****/ 1302/**********************************************************************/ 1303 1304 1305#ifdef IN_DRI_DRIVER 1306#define need_GL_VERSION_1_3 1307#define need_GL_VERSION_1_4 1308#define need_GL_VERSION_1_5 1309#define need_GL_VERSION_2_0 1310 1311/* sw extensions for imaging */ 1312#define need_GL_EXT_blend_color 1313#define need_GL_EXT_blend_minmax 1314#define need_GL_EXT_convolution 1315#define need_GL_EXT_histogram 1316#define need_GL_SGI_color_table 1317 1318/* sw extensions not associated with some GL version */ 1319#define need_GL_ARB_shader_objects 1320#define need_GL_ARB_vertex_program 1321#define need_GL_APPLE_vertex_array_object 1322#define need_GL_ATI_fragment_shader 1323#define need_GL_EXT_depth_bounds_test 1324#define need_GL_EXT_framebuffer_object 1325#define need_GL_EXT_framebuffer_blit 1326#define need_GL_EXT_gpu_program_parameters 1327#define need_GL_EXT_paletted_texture 1328#define need_GL_MESA_resize_buffers 1329#define need_GL_NV_vertex_program 1330#define need_GL_NV_fragment_program 1331 1332#include "extension_helper.h" 1333#include "utils.h" 1334 1335const struct dri_extension card_extensions[] = 1336{ 1337 { "GL_VERSION_1_3", GL_VERSION_1_3_functions }, 1338 { "GL_VERSION_1_4", GL_VERSION_1_4_functions }, 1339 { "GL_VERSION_1_5", GL_VERSION_1_5_functions }, 1340 { "GL_VERSION_2_0", GL_VERSION_2_0_functions }, 1341 1342 { "GL_EXT_blend_color", GL_EXT_blend_color_functions }, 1343 { "GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions }, 1344 { "GL_EXT_convolution", GL_EXT_convolution_functions }, 1345 { "GL_EXT_histogram", GL_EXT_histogram_functions }, 1346 { "GL_SGI_color_table", GL_SGI_color_table_functions }, 1347 1348 { "GL_ARB_shader_objects", GL_ARB_shader_objects_functions }, 1349 { "GL_ARB_vertex_program", GL_ARB_vertex_program_functions }, 1350 { "GL_APPLE_vertex_array_object", GL_APPLE_vertex_array_object_functions }, 1351 { "GL_ATI_fragment_shader", GL_ATI_fragment_shader_functions }, 1352 { "GL_EXT_depth_bounds_test", GL_EXT_depth_bounds_test_functions }, 1353 { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions }, 1354 { "GL_EXT_framebuffer_blit", GL_EXT_framebuffer_blit_functions }, 1355 { "GL_EXT_gpu_program_parameters", GL_EXT_gpu_program_parameters_functions }, 1356 { "GL_EXT_paletted_texture", GL_EXT_paletted_texture_functions }, 1357 { "GL_MESA_resize_buffers", GL_MESA_resize_buffers_functions }, 1358 { "GL_NV_vertex_program", GL_NV_vertex_program_functions }, 1359 { "GL_NV_fragment_program", GL_NV_fragment_program_functions }, 1360 { NULL, NULL } 1361}; 1362#endif 1363 1364/* 1365 * Create a new X/Mesa visual. 1366 * Input: display - X11 display 1367 * visinfo - an XVisualInfo pointer 1368 * rgb_flag - GL_TRUE = RGB mode, 1369 * GL_FALSE = color index mode 1370 * alpha_flag - alpha buffer requested? 1371 * db_flag - GL_TRUE = double-buffered, 1372 * GL_FALSE = single buffered 1373 * stereo_flag - stereo visual? 1374 * ximage_flag - GL_TRUE = use an XImage for back buffer, 1375 * GL_FALSE = use an off-screen pixmap for back buffer 1376 * depth_size - requested bits/depth values, or zero 1377 * stencil_size - requested bits/stencil values, or zero 1378 * accum_red_size - requested bits/red accum values, or zero 1379 * accum_green_size - requested bits/green accum values, or zero 1380 * accum_blue_size - requested bits/blue accum values, or zero 1381 * accum_alpha_size - requested bits/alpha accum values, or zero 1382 * num_samples - number of samples/pixel if multisampling, or zero 1383 * level - visual level, usually 0 1384 * visualCaveat - ala the GLX extension, usually GLX_NONE 1385 * Return; a new XMesaVisual or 0 if error. 1386 */ 1387PUBLIC 1388XMesaVisual XMesaCreateVisual( XMesaDisplay *display, 1389 XMesaVisualInfo visinfo, 1390 GLboolean rgb_flag, 1391 GLboolean alpha_flag, 1392 GLboolean db_flag, 1393 GLboolean stereo_flag, 1394 GLboolean ximage_flag, 1395 GLint depth_size, 1396 GLint stencil_size, 1397 GLint accum_red_size, 1398 GLint accum_green_size, 1399 GLint accum_blue_size, 1400 GLint accum_alpha_size, 1401 GLint num_samples, 1402 GLint level, 1403 GLint visualCaveat ) 1404{ 1405 char *gamma; 1406 XMesaVisual v; 1407 GLint red_bits, green_bits, blue_bits, alpha_bits; 1408 1409#ifdef IN_DRI_DRIVER 1410 /* driInitExtensions() should be called once per screen to setup extension 1411 * indices. There is no need to call it when the context is created since 1412 * XMesa enables mesa sw extensions on its own. 1413 */ 1414 driInitExtensions( NULL, card_extensions, GL_FALSE ); 1415#endif 1416 1417#ifndef XFree86Server 1418 /* For debugging only */ 1419 if (_mesa_getenv("MESA_XSYNC")) { 1420 /* This makes debugging X easier. 1421 * In your debugger, set a breakpoint on _XError to stop when an 1422 * X protocol error is generated. 1423 */ 1424 XSynchronize( display, 1 ); 1425 } 1426#endif 1427 1428 v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); 1429 if (!v) { 1430 return NULL; 1431 } 1432 1433 v->display = display; 1434 1435 /* Save a copy of the XVisualInfo struct because the user may X_mesa_free() 1436 * the struct but we may need some of the information contained in it 1437 * at a later time. 1438 */ 1439#ifndef XFree86Server 1440 v->visinfo = (XVisualInfo *) MALLOC(sizeof(*visinfo)); 1441 if(!v->visinfo) { 1442 _mesa_free(v); 1443 return NULL; 1444 } 1445 MEMCPY(v->visinfo, visinfo, sizeof(*visinfo)); 1446#endif 1447 1448 /* check for MESA_GAMMA environment variable */ 1449 gamma = _mesa_getenv("MESA_GAMMA"); 1450 if (gamma) { 1451 v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0; 1452 sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma ); 1453 if (v->RedGamma<=0.0) v->RedGamma = 1.0; 1454 if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma; 1455 if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma; 1456 } 1457 else { 1458 v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0; 1459 } 1460 1461 v->ximage_flag = ximage_flag; 1462 1463#ifdef XFree86Server 1464 /* We could calculate these values by ourselves. nplanes is either the sum 1465 * of the red, green, and blue bits or the number index bits. 1466 * ColormapEntries is either (1U << index_bits) or 1467 * (1U << max(redBits, greenBits, blueBits)). 1468 */ 1469 assert(visinfo->nplanes > 0); 1470 v->nplanes = visinfo->nplanes; 1471 v->ColormapEntries = visinfo->ColormapEntries; 1472 1473 v->mesa_visual.redMask = visinfo->redMask; 1474 v->mesa_visual.greenMask = visinfo->greenMask; 1475 v->mesa_visual.blueMask = visinfo->blueMask; 1476 v->mesa_visual.visualID = visinfo->vid; 1477 v->mesa_visual.screen = 0; /* FIXME: What should be done here? */ 1478#else 1479 v->mesa_visual.redMask = visinfo->red_mask; 1480 v->mesa_visual.greenMask = visinfo->green_mask; 1481 v->mesa_visual.blueMask = visinfo->blue_mask; 1482 v->mesa_visual.visualID = visinfo->visualid; 1483 v->mesa_visual.screen = visinfo->screen; 1484#endif 1485 1486#if defined(XFree86Server) || !(defined(__cplusplus) || defined(c_plusplus)) 1487 v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->class); 1488#else 1489 v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); 1490#endif 1491 1492 v->mesa_visual.visualRating = visualCaveat; 1493 1494 if (alpha_flag) 1495 v->mesa_visual.alphaBits = 8; 1496 1497 (void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 ); 1498 1499 { 1500 const int xclass = v->mesa_visual.visualType; 1501 if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { 1502 red_bits = _mesa_bitcount(GET_REDMASK(v)); 1503 green_bits = _mesa_bitcount(GET_GREENMASK(v)); 1504 blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); 1505 } 1506 else { 1507 /* this is an approximation */ 1508 int depth; 1509 depth = GET_VISUAL_DEPTH(v); 1510 red_bits = depth / 3; 1511 depth -= red_bits; 1512 green_bits = depth / 2; 1513 depth -= green_bits; 1514 blue_bits = depth; 1515 alpha_bits = 0; 1516 assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) ); 1517 } 1518 alpha_bits = v->mesa_visual.alphaBits; 1519 } 1520 1521 _mesa_initialize_visual( &v->mesa_visual, 1522 rgb_flag, db_flag, stereo_flag, 1523 red_bits, green_bits, 1524 blue_bits, alpha_bits, 1525 v->mesa_visual.indexBits, 1526 depth_size, 1527 stencil_size, 1528 accum_red_size, accum_green_size, 1529 accum_blue_size, accum_alpha_size, 1530 0 ); 1531 1532 /* XXX minor hack */ 1533 v->mesa_visual.level = level; 1534 return v; 1535} 1536 1537 1538PUBLIC 1539void XMesaDestroyVisual( XMesaVisual v ) 1540{ 1541#ifndef XFree86Server 1542 _mesa_free(v->visinfo); 1543#endif 1544 _mesa_free(v); 1545} 1546 1547 1548 1549/** 1550 * Create a new XMesaContext. 1551 * \param v the XMesaVisual 1552 * \param share_list another XMesaContext with which to share display 1553 * lists or NULL if no sharing is wanted. 1554 * \return an XMesaContext or NULL if error. 1555 */ 1556PUBLIC 1557XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list ) 1558{ 1559 static GLboolean firstTime = GL_TRUE; 1560 XMesaContext c; 1561 GLcontext *mesaCtx; 1562 struct dd_function_table functions; 1563 TNLcontext *tnl; 1564 1565 if (firstTime) { 1566 _glthread_INIT_MUTEX(_xmesa_lock); 1567 firstTime = GL_FALSE; 1568 } 1569 1570 /* Note: the XMesaContext contains a Mesa GLcontext struct (inheritance) */ 1571 c = (XMesaContext) CALLOC_STRUCT(xmesa_context); 1572 if (!c) 1573 return NULL; 1574 1575 mesaCtx = &(c->mesa); 1576 1577 /* initialize with default driver functions, then plug in XMesa funcs */ 1578 _mesa_init_driver_functions(&functions); 1579 xmesa_init_driver_functions(v, &functions); 1580 if (!_mesa_initialize_context(mesaCtx, &v->mesa_visual, 1581 share_list ? &(share_list->mesa) : (GLcontext *) NULL, 1582 &functions, (void *) c)) { 1583 _mesa_free(c); 1584 return NULL; 1585 } 1586 1587 _mesa_enable_sw_extensions(mesaCtx); 1588 _mesa_enable_1_3_extensions(mesaCtx); 1589 _mesa_enable_1_4_extensions(mesaCtx); 1590 _mesa_enable_1_5_extensions(mesaCtx); 1591 _mesa_enable_2_0_extensions(mesaCtx); 1592 _mesa_enable_2_1_extensions(mesaCtx); 1593#if ENABLE_EXT_texure_compression_s3tc 1594 if (mesaCtx->Mesa_DXTn) { 1595 _mesa_enable_extension(mesaCtx, "GL_EXT_texture_compression_s3tc"); 1596 _mesa_enable_extension(mesaCtx, "GL_S3_s3tc"); 1597 } 1598 _mesa_enable_extension(mesaCtx, "GL_3DFX_texture_compression_FXT1"); 1599#endif 1600#if ENABLE_EXT_timer_query 1601 _mesa_enable_extension(mesaCtx, "GL_EXT_timer_query"); 1602#endif 1603 1604#ifdef XFree86Server 1605 /* If we're running in the X server, do bounds checking to prevent 1606 * segfaults and server crashes! 1607 */ 1608 mesaCtx->Const.CheckArrayBounds = GL_TRUE; 1609#endif 1610 1611 /* finish up xmesa context initializations */ 1612 c->swapbytes = CHECK_BYTE_ORDER(v) ? GL_FALSE : GL_TRUE; 1613 c->xm_visual = v; 1614 c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ 1615 c->display = v->display; 1616 c->pixelformat = v->dithered_pf; /* Dithering is enabled by default */ 1617 1618 /* Initialize the software rasterizer and helper modules. 1619 */ 1620 if (!_swrast_CreateContext( mesaCtx ) || 1621 !_vbo_CreateContext( mesaCtx ) || 1622 !_tnl_CreateContext( mesaCtx ) || 1623 !_swsetup_CreateContext( mesaCtx )) { 1624 _mesa_free_context_data(&c->mesa); 1625 _mesa_free(c); 1626 return NULL; 1627 } 1628 1629 /* tnl setup */ 1630 tnl = TNL_CONTEXT(mesaCtx); 1631 tnl->Driver.RunPipeline = _tnl_run_pipeline; 1632 /* swrast setup */ 1633 xmesa_register_swrast_functions( mesaCtx ); 1634 _swsetup_Wakeup(mesaCtx); 1635 1636 return c; 1637} 1638 1639 1640 1641PUBLIC 1642void XMesaDestroyContext( XMesaContext c ) 1643{ 1644 GLcontext *mesaCtx = &c->mesa; 1645 1646#ifdef FX 1647 FXdestroyContext( XMESA_BUFFER(mesaCtx->DrawBuffer) ); 1648#endif 1649 1650 _swsetup_DestroyContext( mesaCtx ); 1651 _swrast_DestroyContext( mesaCtx ); 1652 _tnl_DestroyContext( mesaCtx ); 1653 _vbo_DestroyContext( mesaCtx ); 1654 _mesa_free_context_data( mesaCtx ); 1655 _mesa_free( c ); 1656} 1657 1658 1659 1660/** 1661 * Private function for creating an XMesaBuffer which corresponds to an 1662 * X window or pixmap. 1663 * \param v the window's XMesaVisual 1664 * \param w the window we're wrapping 1665 * \return new XMesaBuffer or NULL if error 1666 */ 1667PUBLIC XMesaBuffer 1668XMesaCreateWindowBuffer(XMesaVisual v, XMesaWindow w) 1669{ 1670#ifndef XFree86Server 1671 XWindowAttributes attr; 1672#endif 1673 XMesaBuffer b; 1674 XMesaColormap cmap; 1675 int depth; 1676 1677 assert(v); 1678 assert(w); 1679 1680 /* Check that window depth matches visual depth */ 1681#ifdef XFree86Server 1682 depth = ((XMesaDrawable)w)->depth; 1683#else 1684 XGetWindowAttributes( v->display, w, &attr ); 1685 depth = attr.depth; 1686#endif 1687 if (GET_VISUAL_DEPTH(v) != depth) { 1688 _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", 1689 GET_VISUAL_DEPTH(v), depth); 1690 return NULL; 1691 } 1692 1693 /* Find colormap */ 1694#ifdef XFree86Server 1695 cmap = (ColormapPtr)LookupIDByType(wColormap(w), RT_COLORMAP); 1696#else 1697 if (attr.colormap) { 1698 cmap = attr.colormap; 1699 } 1700 else { 1701 _mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w); 1702 /* this is weird, a window w/out a colormap!? */ 1703 /* OK, let's just allocate a new one and hope for the best */ 1704 cmap = XCreateColormap(v->display, w, attr.visual, AllocNone); 1705 } 1706#endif 1707 1708 b = create_xmesa_buffer((XMesaDrawable) w, WINDOW, v, cmap); 1709 if (!b) 1710 return NULL; 1711 1712 if (!initialize_visual_and_buffer( v, b, v->mesa_visual.rgbMode, 1713 (XMesaDrawable) w, cmap )) { 1714 xmesa_free_buffer(b); 1715 return NULL; 1716 } 1717 1718 return b; 1719} 1720 1721 1722 1723/** 1724 * Create a new XMesaBuffer from an X pixmap. 1725 * 1726 * \param v the XMesaVisual 1727 * \param p the pixmap 1728 * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or 1729 * \c GLX_DIRECT_COLOR visual for the pixmap 1730 * \returns new XMesaBuffer or NULL if error 1731 */ 1732PUBLIC XMesaBuffer 1733XMesaCreatePixmapBuffer(XMesaVisual v, XMesaPixmap p, XMesaColormap cmap) 1734{ 1735 XMesaBuffer b; 1736 1737 assert(v); 1738 1739 b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); 1740 if (!b) 1741 return NULL; 1742 1743 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1744 (XMesaDrawable) p, cmap)) { 1745 xmesa_free_buffer(b); 1746 return NULL; 1747 } 1748 1749 return b; 1750} 1751 1752 1753/** 1754 * For GLX_EXT_texture_from_pixmap 1755 */ 1756XMesaBuffer 1757XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p, 1758 XMesaColormap cmap, 1759 int format, int target, int mipmap) 1760{ 1761 GET_CURRENT_CONTEXT(ctx); 1762 XMesaBuffer b; 1763 GLuint width, height; 1764 1765 assert(v); 1766 1767 b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); 1768 if (!b) 1769 return NULL; 1770 1771 /* get pixmap size, update framebuffer/renderbuffer dims */ 1772 xmesa_get_window_size(v->display, b, &width, &height); 1773 _mesa_resize_framebuffer(NULL, &(b->mesa_buffer), width, height); 1774 1775 if (target == 0) { 1776 /* examine dims */ 1777 if (ctx->Extensions.ARB_texture_non_power_of_two) { 1778 target = GLX_TEXTURE_2D_EXT; 1779 } 1780 else if ( _mesa_bitcount(width) == 1 1781 && _mesa_bitcount(height) == 1) { 1782 /* power of two size */ 1783 if (height == 1) { 1784 target = GLX_TEXTURE_1D_EXT; 1785 } 1786 else { 1787 target = GLX_TEXTURE_2D_EXT; 1788 } 1789 } 1790 else if (ctx->Extensions.NV_texture_rectangle) { 1791 target = GLX_TEXTURE_RECTANGLE_EXT; 1792 } 1793 else { 1794 /* non power of two textures not supported */ 1795 XMesaDestroyBuffer(b); 1796 return 0; 1797 } 1798 } 1799 1800 b->TextureTarget = target; 1801 b->TextureFormat = format; 1802 b->TextureMipmap = mipmap; 1803 1804 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1805 (XMesaDrawable) p, cmap)) { 1806 xmesa_free_buffer(b); 1807 return NULL; 1808 } 1809 1810 return b; 1811} 1812 1813 1814 1815XMesaBuffer 1816XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap, 1817 unsigned int width, unsigned int height) 1818{ 1819#ifndef XFree86Server 1820 XMesaWindow root; 1821 XMesaDrawable drawable; /* X Pixmap Drawable */ 1822 XMesaBuffer b; 1823 1824 /* allocate pixmap for front buffer */ 1825 root = RootWindow( v->display, v->visinfo->screen ); 1826 drawable = XCreatePixmap(v->display, root, width, height, 1827 v->visinfo->depth); 1828 if (!drawable) 1829 return NULL; 1830 1831 b = create_xmesa_buffer(drawable, PBUFFER, v, cmap); 1832 if (!b) 1833 return NULL; 1834 1835 if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, 1836 drawable, cmap)) { 1837 xmesa_free_buffer(b); 1838 return NULL; 1839 } 1840 1841 return b; 1842#else 1843 return 0; 1844#endif 1845} 1846 1847 1848 1849/* 1850 * Deallocate an XMesaBuffer structure and all related info. 1851 */ 1852PUBLIC void 1853XMesaDestroyBuffer(XMesaBuffer b) 1854{ 1855 xmesa_free_buffer(b); 1856} 1857 1858 1859/** 1860 * Query the current window size and update the corresponding GLframebuffer 1861 * and all attached renderbuffers. 1862 * Called when: 1863 * 1. the first time a buffer is bound to a context. 1864 * 2. from glViewport to poll for window size changes 1865 * 3. from the XMesaResizeBuffers() API function. 1866 * Note: it's possible (and legal) for xmctx to be NULL. That can happen 1867 * when resizing a buffer when no rendering context is bound. 1868 */ 1869void 1870xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer) 1871{ 1872 GLuint width, height; 1873 xmesa_get_window_size(drawBuffer->display, drawBuffer, &width, &height); 1874 if (drawBuffer->mesa_buffer.Width != width || 1875 drawBuffer->mesa_buffer.Height != height) { 1876 GLcontext *ctx = xmctx ? &xmctx->mesa : NULL; 1877 _mesa_resize_framebuffer(ctx, &(drawBuffer->mesa_buffer), width, height); 1878 } 1879 drawBuffer->mesa_buffer.Initialized = GL_TRUE; /* XXX TEMPORARY? */ 1880} 1881 1882 1883/* 1884 * Bind buffer b to context c and make c the current rendering context. 1885 */ 1886GLboolean XMesaMakeCurrent( XMesaContext c, XMesaBuffer b ) 1887{ 1888 return XMesaMakeCurrent2( c, b, b ); 1889} 1890 1891 1892/* 1893 * Bind buffer b to context c and make c the current rendering context. 1894 */ 1895PUBLIC 1896GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, 1897 XMesaBuffer readBuffer ) 1898{ 1899 if (c) { 1900 if (!drawBuffer || !readBuffer) 1901 return GL_FALSE; /* must specify buffers! */ 1902 1903 if (&(c->mesa) == _mesa_get_current_context() 1904 && c->mesa.DrawBuffer == &drawBuffer->mesa_buffer 1905 && c->mesa.ReadBuffer == &readBuffer->mesa_buffer 1906 && XMESA_BUFFER(c->mesa.DrawBuffer)->wasCurrent) { 1907 /* same context and buffer, do nothing */ 1908 return GL_TRUE; 1909 } 1910 1911 c->xm_buffer = drawBuffer; 1912 1913#ifdef FX 1914 if (FXmakeCurrent( drawBuffer )) 1915 return GL_TRUE; 1916#endif 1917 1918 /* Call this periodically to detect when the user has begun using 1919 * GL rendering from multiple threads. 1920 */ 1921 _glapi_check_multithread(); 1922 1923 xmesa_check_and_update_buffer_size(c, drawBuffer); 1924 if (readBuffer != drawBuffer) 1925 xmesa_check_and_update_buffer_size(c, readBuffer); 1926 1927 _mesa_make_current(&(c->mesa), 1928 &drawBuffer->mesa_buffer, 1929 &readBuffer->mesa_buffer); 1930 1931 if (c->xm_visual->mesa_visual.rgbMode) { 1932 /* 1933 * Must recompute and set these pixel values because colormap 1934 * can be different for different windows. 1935 */ 1936 c->clearpixel = xmesa_color_to_pixel( &c->mesa, 1937 c->clearcolor[0], 1938 c->clearcolor[1], 1939 c->clearcolor[2], 1940 c->clearcolor[3], 1941 c->xm_visual->undithered_pf); 1942 XMesaSetForeground(c->display, drawBuffer->cleargc, c->clearpixel); 1943 } 1944 1945 /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ 1946 drawBuffer->wasCurrent = GL_TRUE; 1947 } 1948 else { 1949 /* Detach */ 1950 _mesa_make_current( NULL, NULL, NULL ); 1951 } 1952 return GL_TRUE; 1953} 1954 1955 1956/* 1957 * Unbind the context c from its buffer. 1958 */ 1959GLboolean XMesaUnbindContext( XMesaContext c ) 1960{ 1961 /* A no-op for XFree86 integration purposes */ 1962 return GL_TRUE; 1963} 1964 1965 1966XMesaContext XMesaGetCurrentContext( void ) 1967{ 1968 GET_CURRENT_CONTEXT(ctx); 1969 if (ctx) { 1970 XMesaContext xmesa = XMESA_CONTEXT(ctx); 1971 return xmesa; 1972 } 1973 else { 1974 return 0; 1975 } 1976} 1977 1978 1979XMesaBuffer XMesaGetCurrentBuffer( void ) 1980{ 1981 GET_CURRENT_CONTEXT(ctx); 1982 if (ctx) { 1983 XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); 1984 return xmbuf; 1985 } 1986 else { 1987 return 0; 1988 } 1989} 1990 1991 1992/* New in Mesa 3.1 */ 1993XMesaBuffer XMesaGetCurrentReadBuffer( void ) 1994{ 1995 GET_CURRENT_CONTEXT(ctx); 1996 if (ctx) { 1997 return XMESA_BUFFER(ctx->ReadBuffer); 1998 } 1999 else { 2000 return 0; 2001 } 2002} 2003 2004 2005#ifdef XFree86Server 2006PUBLIC 2007GLboolean XMesaForceCurrent(XMesaContext c) 2008{ 2009 if (c) { 2010 _glapi_set_dispatch(c->mesa.CurrentDispatch); 2011 2012 if (&(c->mesa) != _mesa_get_current_context()) { 2013 _mesa_make_current(&c->mesa, c->mesa.DrawBuffer, c->mesa.ReadBuffer); 2014 } 2015 } 2016 else { 2017 _mesa_make_current(NULL, NULL, NULL); 2018 } 2019 return GL_TRUE; 2020} 2021 2022 2023PUBLIC 2024GLboolean XMesaLoseCurrent(XMesaContext c) 2025{ 2026 (void) c; 2027 _mesa_make_current(NULL, NULL, NULL); 2028 return GL_TRUE; 2029} 2030 2031 2032PUBLIC 2033GLboolean XMesaCopyContext( XMesaContext xm_src, XMesaContext xm_dst, GLuint mask ) 2034{ 2035 _mesa_copy_context(&xm_src->mesa, &xm_dst->mesa, mask); 2036 return GL_TRUE; 2037} 2038#endif /* XFree86Server */ 2039 2040 2041#ifndef FX 2042GLboolean XMesaSetFXmode( GLint mode ) 2043{ 2044 (void) mode; 2045 return GL_FALSE; 2046} 2047#endif 2048 2049 2050 2051/* 2052 * Copy the back buffer to the front buffer. If there's no back buffer 2053 * this is a no-op. 2054 */ 2055PUBLIC 2056void XMesaSwapBuffers( XMesaBuffer b ) 2057{ 2058 GET_CURRENT_CONTEXT(ctx); 2059 2060 if (!b->backxrb) { 2061 /* single buffered */ 2062 return; 2063 } 2064 2065 /* If we're swapping the buffer associated with the current context 2066 * we have to flush any pending rendering commands first. 2067 */ 2068 if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) 2069 _mesa_notifySwapBuffers(ctx); 2070 2071 if (b->db_mode) { 2072#ifdef FX 2073 if (FXswapBuffers(b)) 2074 return; 2075#endif 2076 if (b->backxrb->ximage) { 2077 /* Copy Ximage (back buf) from client memory to server window */ 2078#if defined(USE_XSHM) && !defined(XFree86Server) 2079 if (b->shm) { 2080 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2081 XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, 2082 b->swapgc, 2083 b->backxrb->ximage, 0, 0, 2084 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, 2085 False ); 2086 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2087 } 2088 else 2089#endif 2090 { 2091 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2092 XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, 2093 b->swapgc, 2094 b->backxrb->ximage, 0, 0, 2095 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height ); 2096 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2097 } 2098 } 2099 else if (b->backxrb->pixmap) { 2100 /* Copy pixmap (back buf) to window (front buf) on server */ 2101 /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ 2102 XMesaCopyArea( b->xm_visual->display, 2103 b->backxrb->pixmap, /* source drawable */ 2104 b->frontxrb->drawable, /* dest. drawable */ 2105 b->swapgc, 2106 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, 2107 0, 0 /* dest region */ 2108 ); 2109 /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ 2110 } 2111 2112 if (b->swAlpha) 2113 _mesa_copy_soft_alpha_renderbuffers(ctx, &b->mesa_buffer); 2114 } 2115#if !defined(XFree86Server) 2116 XSync( b->xm_visual->display, False ); 2117#endif 2118} 2119 2120 2121 2122/* 2123 * Copy sub-region of back buffer to front buffer 2124 */ 2125void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) 2126{ 2127 GET_CURRENT_CONTEXT(ctx); 2128 2129 /* If we're swapping the buffer associated with the current context 2130 * we have to flush any pending rendering commands first. 2131 */ 2132 if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) 2133 _mesa_notifySwapBuffers(ctx); 2134 2135 if (!b->backxrb) { 2136 /* single buffered */ 2137 return; 2138 } 2139 2140 if (b->db_mode) { 2141 int yTop = b->mesa_buffer.Height - y - height; 2142#ifdef FX 2143 if (FXswapBuffers(b)) 2144 return; 2145#endif 2146 if (b->backxrb->ximage) { 2147 /* Copy Ximage from host's memory to server's window */ 2148#if defined(USE_XSHM) && !defined(XFree86Server) 2149 if (b->shm) { 2150 /* XXX assuming width and height aren't too large! */ 2151 XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, 2152 b->swapgc, 2153 b->backxrb->ximage, x, yTop, 2154 x, yTop, width, height, False ); 2155 /* wait for finished event??? */ 2156 } 2157 else 2158#endif 2159 { 2160 /* XXX assuming width and height aren't too large! */ 2161 XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, 2162 b->swapgc, 2163 b->backxrb->ximage, x, yTop, 2164 x, yTop, width, height ); 2165 } 2166 } 2167 else { 2168 /* Copy pixmap to window on server */ 2169 XMesaCopyArea( b->xm_visual->display, 2170 b->backxrb->pixmap, /* source drawable */ 2171 b->frontxrb->drawable, /* dest. drawable */ 2172 b->swapgc, 2173 x, yTop, width, height, /* source region */ 2174 x, yTop /* dest region */ 2175 ); 2176 } 2177 } 2178} 2179 2180 2181/* 2182 * Return a pointer to the XMesa backbuffer Pixmap or XImage. This function 2183 * is a way to get "under the hood" of X/Mesa so one can manipulate the 2184 * back buffer directly. 2185 * Output: pixmap - pointer to back buffer's Pixmap, or 0 2186 * ximage - pointer to back buffer's XImage, or NULL 2187 * Return: GL_TRUE = context is double buffered 2188 * GL_FALSE = context is single buffered 2189 */ 2190#ifndef XFree86Server 2191GLboolean XMesaGetBackBuffer( XMesaBuffer b, 2192 XMesaPixmap *pixmap, 2193 XMesaImage **ximage ) 2194{ 2195 if (b->db_mode) { 2196 if (pixmap) 2197 *pixmap = b->backxrb->pixmap; 2198 if (ximage) 2199 *ximage = b->backxrb->ximage; 2200 return GL_TRUE; 2201 } 2202 else { 2203 *pixmap = 0; 2204 *ximage = NULL; 2205 return GL_FALSE; 2206 } 2207} 2208#endif /* XFree86Server */ 2209 2210 2211/* 2212 * Return the depth buffer associated with an XMesaBuffer. 2213 * Input: b - the XMesa buffer handle 2214 * Output: width, height - size of buffer in pixels 2215 * bytesPerValue - bytes per depth value (2 or 4) 2216 * buffer - pointer to depth buffer values 2217 * Return: GL_TRUE or GL_FALSE to indicate success or failure. 2218 */ 2219GLboolean XMesaGetDepthBuffer( XMesaBuffer b, GLint *width, GLint *height, 2220 GLint *bytesPerValue, void **buffer ) 2221{ 2222 struct gl_renderbuffer *rb 2223 = b->mesa_buffer.Attachment[BUFFER_DEPTH].Renderbuffer; 2224 if (!rb || !rb->Data) { 2225 *width = 0; 2226 *height = 0; 2227 *bytesPerValue = 0; 2228 *buffer = 0; 2229 return GL_FALSE; 2230 } 2231 else { 2232 *width = b->mesa_buffer.Width; 2233 *height = b->mesa_buffer.Height; 2234 *bytesPerValue = b->mesa_buffer.Visual.depthBits <= 16 2235 ? sizeof(GLushort) : sizeof(GLuint); 2236 *buffer = rb->Data; 2237 return GL_TRUE; 2238 } 2239} 2240 2241 2242void XMesaFlush( XMesaContext c ) 2243{ 2244 if (c && c->xm_visual) { 2245#ifdef XFree86Server 2246 /* NOT_NEEDED */ 2247#else 2248 XSync( c->xm_visual->display, False ); 2249#endif 2250 } 2251} 2252 2253 2254 2255const char *XMesaGetString( XMesaContext c, int name ) 2256{ 2257 (void) c; 2258 if (name==XMESA_VERSION) { 2259 return "5.0"; 2260 } 2261 else if (name==XMESA_EXTENSIONS) { 2262 return ""; 2263 } 2264 else { 2265 return NULL; 2266 } 2267} 2268 2269 2270 2271XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, XMesaDrawable d ) 2272{ 2273 XMesaBuffer b; 2274 for (b=XMesaBufferList; b; b=b->Next) { 2275 if (b->frontxrb->drawable == d && b->display == dpy) { 2276 return b; 2277 } 2278 } 2279 return NULL; 2280} 2281 2282 2283/** 2284 * Free/destroy all XMesaBuffers associated with given display. 2285 */ 2286void xmesa_destroy_buffers_on_display(XMesaDisplay *dpy) 2287{ 2288 XMesaBuffer b, next; 2289 for (b = XMesaBufferList; b; b = next) { 2290 next = b->Next; 2291 if (b->display == dpy) { 2292 xmesa_free_buffer(b); 2293 } 2294 } 2295} 2296 2297 2298/* 2299 * Look for XMesaBuffers whose X window has been destroyed. 2300 * Deallocate any such XMesaBuffers. 2301 */ 2302void XMesaGarbageCollect( void ) 2303{ 2304 XMesaBuffer b, next; 2305 for (b=XMesaBufferList; b; b=next) { 2306 next = b->Next; 2307 if (b->display && b->frontxrb->drawable && b->type == WINDOW) { 2308#ifdef XFree86Server 2309 /* NOT_NEEDED */ 2310#else 2311 XSync(b->display, False); 2312 if (!window_exists( b->display, b->frontxrb->drawable )) { 2313 /* found a dead window, free the ancillary info */ 2314 XMesaDestroyBuffer( b ); 2315 } 2316#endif 2317 } 2318 } 2319} 2320 2321 2322unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y, 2323 GLfloat red, GLfloat green, 2324 GLfloat blue, GLfloat alpha ) 2325{ 2326 GLcontext *ctx = &xmesa->mesa; 2327 GLint r = (GLint) (red * 255.0F); 2328 GLint g = (GLint) (green * 255.0F); 2329 GLint b = (GLint) (blue * 255.0F); 2330 GLint a = (GLint) (alpha * 255.0F); 2331 2332 switch (xmesa->pixelformat) { 2333 case PF_Index: 2334 return 0; 2335 case PF_Truecolor: 2336 { 2337 unsigned long p; 2338 PACK_TRUECOLOR( p, r, g, b ); 2339 return p; 2340 } 2341 case PF_8A8B8G8R: 2342 return PACK_8A8B8G8R( r, g, b, a ); 2343 case PF_8A8R8G8B: 2344 return PACK_8A8R8G8B( r, g, b, a ); 2345 case PF_8R8G8B: 2346 return PACK_8R8G8B( r, g, b ); 2347 case PF_5R6G5B: 2348 return PACK_5R6G5B( r, g, b ); 2349 case PF_Dither: 2350 { 2351 DITHER_SETUP; 2352 return DITHER( x, y, r, g, b ); 2353 } 2354 case PF_1Bit: 2355 /* 382 = (3*255)/2 */ 2356 return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; 2357 case PF_HPCR: 2358 return DITHER_HPCR(x, y, r, g, b); 2359 case PF_Lookup: 2360 { 2361 LOOKUP_SETUP; 2362 return LOOKUP( r, g, b ); 2363 } 2364 case PF_Grayscale: 2365 return GRAY_RGB( r, g, b ); 2366 case PF_Dither_5R6G5B: 2367 /* fall through */ 2368 case PF_Dither_True: 2369 { 2370 unsigned long p; 2371 PACK_TRUEDITHER(p, x, y, r, g, b); 2372 return p; 2373 } 2374 default: 2375 _mesa_problem(NULL, "Bad pixel format in XMesaDitherColor"); 2376 } 2377 return 0; 2378} 2379 2380 2381/* 2382 * This is typically called when the window size changes and we need 2383 * to reallocate the buffer's back/depth/stencil/accum buffers. 2384 */ 2385PUBLIC void 2386XMesaResizeBuffers( XMesaBuffer b ) 2387{ 2388 GET_CURRENT_CONTEXT(ctx); 2389 XMesaContext xmctx = XMESA_CONTEXT(ctx); 2390 if (!xmctx) 2391 return; 2392 xmesa_check_and_update_buffer_size(xmctx, b); 2393} 2394 2395 2396static GLint 2397xbuffer_to_renderbuffer(int buffer) 2398{ 2399 assert(MAX_AUX_BUFFERS <= 4); 2400 2401 switch (buffer) { 2402 case GLX_FRONT_LEFT_EXT: 2403 return BUFFER_FRONT_LEFT; 2404 case GLX_FRONT_RIGHT_EXT: 2405 return BUFFER_FRONT_RIGHT; 2406 case GLX_BACK_LEFT_EXT: 2407 return BUFFER_BACK_LEFT; 2408 case GLX_BACK_RIGHT_EXT: 2409 return BUFFER_BACK_RIGHT; 2410 case GLX_AUX0_EXT: 2411 return BUFFER_AUX0; 2412 case GLX_AUX1_EXT: 2413 return BUFFER_AUX1; 2414 case GLX_AUX2_EXT: 2415 return BUFFER_AUX2; 2416 case GLX_AUX3_EXT: 2417 return BUFFER_AUX3; 2418 case GLX_AUX4_EXT: 2419 case GLX_AUX5_EXT: 2420 case GLX_AUX6_EXT: 2421 case GLX_AUX7_EXT: 2422 case GLX_AUX8_EXT: 2423 case GLX_AUX9_EXT: 2424 default: 2425 /* BadValue error */ 2426 return -1; 2427 } 2428} 2429 2430 2431PUBLIC void 2432XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer, 2433 const int *attrib_list) 2434{ 2435#if 0 2436 GET_CURRENT_CONTEXT(ctx); 2437 const GLuint unit = ctx->Texture.CurrentUnit; 2438 struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; 2439 struct gl_texture_object *texObj; 2440#endif 2441 struct gl_renderbuffer *rb; 2442 struct xmesa_renderbuffer *xrb; 2443 GLint b; 2444 XMesaImage *img = NULL; 2445 GLboolean freeImg = GL_FALSE; 2446 2447 b = xbuffer_to_renderbuffer(buffer); 2448 if (b < 0) 2449 return; 2450 2451 if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_NONE_EXT) 2452 return; /* BadMatch error */ 2453 2454 rb = drawable->mesa_buffer.Attachment[b].Renderbuffer; 2455 if (!rb) { 2456 /* invalid buffer */ 2457 return; 2458 } 2459 xrb = xmesa_renderbuffer(rb); 2460 2461#if 0 2462 switch (drawable->TextureTarget) { 2463 case GLX_TEXTURE_1D_EXT: 2464 texObj = texUnit->CurrentTex[TEXTURE_1D_INDEX]; 2465 break; 2466 case GLX_TEXTURE_2D_EXT: 2467 texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX]; 2468 break; 2469 case GLX_TEXTURE_RECTANGLE_EXT: 2470 texObj = texUnit->CurrentTex[TEXTURE_RECT_INDEX]; 2471 break; 2472 default: 2473 return; /* BadMatch error */ 2474 } 2475#endif 2476 2477 /* 2478 * The following is a quick and simple way to implement 2479 * BindTexImage. The better way is to write some new FetchTexel() 2480 * functions which would extract texels from XImages. We'd still 2481 * need to use GetImage when texturing from a Pixmap (front buffer) 2482 * but texturing from a back buffer (XImage) would avoid an image 2483 * copy. 2484 */ 2485 2486 /* get XImage */ 2487 if (xrb->pixmap) { 2488 img = XMesaGetImage(dpy, xrb->pixmap, 0, 0, rb->Width, rb->Height, ~0L, 2489 ZPixmap); 2490 freeImg = GL_TRUE; 2491 } 2492 else if (xrb->ximage) { 2493 img = xrb->ximage; 2494 } 2495 2496 /* store the XImage as a new texture image */ 2497 if (img) { 2498 GLenum format, type, intFormat; 2499 if (img->bits_per_pixel == 32) { 2500 format = GL_BGRA; 2501 type = GL_UNSIGNED_BYTE; 2502 intFormat = GL_RGBA; 2503 } 2504 else if (img->bits_per_pixel == 24) { 2505 format = GL_BGR; 2506 type = GL_UNSIGNED_BYTE; 2507 intFormat = GL_RGB; 2508 } 2509 else if (img->bits_per_pixel == 16) { 2510 format = GL_BGR; 2511 type = GL_UNSIGNED_SHORT_5_6_5; 2512 intFormat = GL_RGB; 2513 } 2514 else { 2515 _mesa_problem(NULL, "Unexpected XImage format in XMesaBindTexImage"); 2516 return; 2517 } 2518 if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGBA_EXT) { 2519 intFormat = GL_RGBA; 2520 } 2521 else if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGB_EXT) { 2522 intFormat = GL_RGB; 2523 } 2524 2525 _mesa_TexImage2D(GL_TEXTURE_2D, 0, intFormat, rb->Width, rb->Height, 0, 2526 format, type, img->data); 2527 2528 if (freeImg) { 2529 XMesaDestroyImage(img); 2530 } 2531 } 2532} 2533 2534 2535 2536PUBLIC void 2537XMesaReleaseTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer) 2538{ 2539 const GLint b = xbuffer_to_renderbuffer(buffer); 2540 if (b < 0) 2541 return; 2542 2543 /* no-op for now */ 2544} 2545 2546