native_x11.c revision f9d9574913c5edb92191ac3f5e8d011452427852
1/* 2 * Mesa 3-D graphics library 3 * Version: 7.8 4 * 5 * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 */ 25 26#include <string.h> 27#include "util/u_debug.h" 28#include "util/u_memory.h" 29#include "util/u_string.h" 30#include "egllog.h" 31 32#include "native_x11.h" 33#include "x11_screen.h" 34 35#include "state_tracker/drm_driver.h" 36 37#define X11_PROBE_MAGIC 0x11980BE /* "X11PROBE" */ 38 39static void 40x11_probe_destroy(struct native_probe *nprobe) 41{ 42 if (nprobe->data) 43 FREE(nprobe->data); 44 FREE(nprobe); 45} 46 47struct native_probe * 48native_create_probe(EGLNativeDisplayType dpy) 49{ 50 struct native_probe *nprobe; 51 struct x11_screen *xscr; 52 int scr; 53 const char *driver_name = NULL; 54 Display *xdpy; 55 56 nprobe = CALLOC_STRUCT(native_probe); 57 if (!nprobe) 58 return NULL; 59 60 xdpy = dpy; 61 if (!xdpy) { 62 xdpy = XOpenDisplay(NULL); 63 if (!xdpy) { 64 FREE(nprobe); 65 return NULL; 66 } 67 } 68 69 scr = DefaultScreen(xdpy); 70 xscr = x11_screen_create(xdpy, scr); 71 if (xscr) { 72 if (x11_screen_support(xscr, X11_SCREEN_EXTENSION_DRI2)) { 73 driver_name = x11_screen_probe_dri2(xscr, NULL, NULL); 74 if (driver_name) 75 nprobe->data = strdup(driver_name); 76 } 77 78 x11_screen_destroy(xscr); 79 } 80 81 if (xdpy != dpy) 82 XCloseDisplay(xdpy); 83 84 nprobe->magic = X11_PROBE_MAGIC; 85 nprobe->display = dpy; 86 87 nprobe->destroy = x11_probe_destroy; 88 89 return nprobe; 90} 91 92enum native_probe_result 93native_get_probe_result(struct native_probe *nprobe) 94{ 95 if (!nprobe || nprobe->magic != X11_PROBE_MAGIC) 96 return NATIVE_PROBE_UNKNOWN; 97 98 /* this is a software driver */ 99 if (!driver_descriptor.create_screen) 100 return NATIVE_PROBE_SUPPORTED; 101 102 /* the display does not support DRI2 or the driver mismatches */ 103 if (!nprobe->data || strcmp(driver_descriptor.name, (const char *) nprobe->data) != 0) 104 return NATIVE_PROBE_FALLBACK; 105 106 return NATIVE_PROBE_EXACT; 107} 108 109const char * 110native_get_name(void) 111{ 112 static char x11_name[32]; 113 114 util_snprintf(x11_name, sizeof(x11_name), "X11/%s", driver_descriptor.name); 115 116 return x11_name; 117} 118 119struct native_display * 120native_create_display(EGLNativeDisplayType dpy, 121 struct native_event_handler *event_handler) 122{ 123 struct native_display *ndpy = NULL; 124 boolean force_sw; 125 126 force_sw = debug_get_bool_option("EGL_SOFTWARE", FALSE); 127 if (!driver_descriptor.create_screen) 128 force_sw = TRUE; 129 130 if (!force_sw) { 131 ndpy = x11_create_dri2_display(dpy, event_handler); 132 } 133 134 if (!ndpy) { 135 EGLint level = (force_sw) ? _EGL_INFO : _EGL_WARNING; 136 137 _eglLog(level, "use software fallback"); 138 ndpy = x11_create_ximage_display(dpy, event_handler); 139 } 140 141 return ndpy; 142} 143