Я пытался этот учебник SDL.
Я пытался выполнить следующий простой код в учебнике.
Но при его выполнении выдается предупреждение, поэтому окно не открывается.
Я считал, что эта ошибка вызвана символической ссылкой, ссылающейся на здесь .Но libEGL.so.1 уже существует в /usr/lib/x86_64-linux-gnu
libEGL warning: DRI2: failed to authenticate
код:
#include <iostream>
#include "SDL.h"
#include <memory>
int main() {
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
std::cout << "SDL_Init Error: " << SDL_GetError() << std::endl;
return 1;
}
SDL_Window *win = SDL_CreateWindow("Hello World!", 100, 100, 640, 480, SDL_WINDOW_SHOWN);
if (win == nullptr) {
std::cout << "SDL_CreateWindow Error: " << SDL_GetError() << std::endl;
SDL_Quit();
return 1;
}
auto *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC);
if (ren == nullptr) {
SDL_DestroyWindow(win);
std::cout << "SDL_CreateRenderer Error: " << SDL_GetError() << std::endl;
SDL_Quit();
return 1;
}
}
Ubuntu Linux 18.10 на виртуальной машине.ОС хоста: Windows 10
Edit
Я установил virtualbox-guest-дополнения:
modinfo vboxguest
filename: /lib/modules/4.18.0-15-generic/misc/vboxguest.ko
version: 6.0.4 r128413
license: GPL
description: Oracle VM VirtualBox Guest Additions for Linux Module
author: Oracle Corporation
srcversion: 95F53B9B95BC6E03156A1D8
alias: pci:v000080EEd0000CAFEsv00000000sd00000000bc*sc*i*
depends:
retpoline: Y
name: vboxguest
vermagic: 4.18.0-15-generic SMP mod_unload
Edit2
xdpyinfo вывод (Это не все, вывод слишком длинный, поэтому это несколько строк вершины вывода.
name of display: :0
version number: 11.0
vendor string: The X.Org Foundation
vendor release number: 12001000
X.Org version: 1.20.1
maximum request size: 16777212 bytes
motion buffer size: 256
bitmap unit, bit order, padding: 32, LSBFirst, 32
image byte order: LSBFirst
number of supported pixmap formats: 7
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 4, bits_per_pixel 8, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
depth 15, bits_per_pixel 16, scanline_pad 32
depth 16, bits_per_pixel 16, scanline_pad 32
depth 24, bits_per_pixel 32, scanline_pad 32
depth 32, bits_per_pixel 32, scanline_pad 32
keycode range: minimum 8, maximum 255
focus: window 0x2e00007, revert to Parent
number of extensions: 27
BIG-REQUESTS
Composite
DAMAGE
DOUBLE-BUFFER
DPMS
DRI2
GLX
Generic Event Extension
MIT-SCREEN-SAVER
MIT-SHM
Present
RANDR
RECORD
RENDER
SECURITY
SHAPE
SYNC
X-Resource
XC-MISC
XFIXES
XFree86-DGA
XFree86-VidModeExtension
XINERAMA
XInputExtension
XKEYBOARD
XTEST
XVideo
default screen number: 0
number of screens: 1
screen #0:
dimensions: 952x966 pixels (251x255 millimeters)
resolution: 96x96 dots per inch
depths (7): 24, 1, 4, 8, 15, 16, 32
root window id: 0x2bd
depth of root window: 24 planes
number of colormaps: minimum 1, maximum 1
default colormap: 0x20
default number of colormap cells: 256
preallocated pixels: black 0, white 16777215
options: backing-store WHEN MAPPED, save-unders NO
largest cursor: 64x64
current input event mask: 0xda0003
KeyPressMask KeyReleaseMask StructureNotifyMask
SubstructureNotifyMask SubstructureRedirectMask PropertyChangeMask
ColormapChangeMask
number of visuals: 270
default visual id: 0x21
visual:
visual id: 0x21
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff0000, 0xff00, 0xff
significant bits in color specification: 8 bits
Журнал Xorg (несколько строк хвоста журнала Xorg):
[ 14.691] (II) Using input driver 'libinput' for 'ImExPS/2 Generic Explorer Mouse'
[ 14.694] (II) systemd-logind: got fd for /dev/input/event3 13:67 fd 28 paused 0
[ 14.694] (**) ImExPS/2 Generic Explorer Mouse: always reports core events
[ 14.694] (**) Option "Device" "/dev/input/event3"
[ 14.694] (**) Option "_source" "server/udev"
[ 14.696] (II) event3 - ImExPS/2 Generic Explorer Mouse: is tagged by udev as: Mouse
[ 14.696] (II) event3 - ImExPS/2 Generic Explorer Mouse: device is a pointer
[ 14.696] (II) event3 - ImExPS/2 Generic Explorer Mouse: device removed
[ 14.696] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input4/event3"
[ 14.697] (II) XINPUT: Adding extended input device "ImExPS/2 Generic Explorer Mouse" (type: MOUSE, id 12)
[ 14.697] (**) Option "AccelerationScheme" "none"
[ 14.697] (**) ImExPS/2 Generic Explorer Mouse: (accel) selected scheme none/0
[ 14.697] (**) ImExPS/2 Generic Explorer Mouse: (accel) acceleration factor: 2.000
[ 14.698] (**) ImExPS/2 Generic Explorer Mouse: (accel) acceleration threshold: 4
[ 14.699] (II) event3 - ImExPS/2 Generic Explorer Mouse: is tagged by udev as: Mouse
[ 14.699] (II) event3 - ImExPS/2 Generic Explorer Mouse: device is a pointer
[ 14.700] (II) config/udev: Adding input device ImExPS/2 Generic Explorer Mouse (/dev/input/mouse0)
[ 14.700] (II) No input driver specified, ignoring this device.
[ 14.700] (II) This device may have been added with another device file.
[ 16.545] (II) modeset(0): EDID vendor "VBX", prod id 0
[ 16.545] (II) modeset(0): DDCModeFromDetailedTiming: 952x966 Warning: We only handle separate sync.
[ 16.545] (II) modeset(0): Using EDID range info for horizontal sync
[ 16.545] (II) modeset(0): Using EDID range info for vertical refresh
[ 16.549] (II) modeset(0): EDID vendor "VBX", prod id 0
[ 16.549] (II) modeset(0): DDCModeFromDetailedTiming: 952x966 Warning: We only handle separate sync.
[ 16.549] (II) modeset(0): Using hsync ranges from config file
[ 16.549] (II) modeset(0): Using vrefresh ranges from config file
[ 17.169] (II) modeset(0): EDID vendor "VBX", prod id 0
[ 17.169] (II) modeset(0): DDCModeFromDetailedTiming: 952x966 Warning: We only handle separate sync.
[ 17.169] (II) modeset(0): Using hsync ranges from config file
glxgears: 