Fails to start

[Sergey Il'inykh]

rion@dizzynb ~/projects/psi/git/iris $ sviewgl /home/rion/projects/psi/git/iconsets/system/default/logo_128.png
rion@dizzynb ~/projects/psi/git/iris $ echo $?
0

No any other signs of activity. only --help works.

[Andrey Ugolnik]

Which OS you use and which video card you have?

[Sergey Il'inykh]

Gentoo, Intel(R) HD Graphics 4000 KDE,

I believe gl works fine since I don't have any problem with KDE effect.

But the application just stops instantly without error. That's really strange. Well I could compile it some unexpected way though, since I didn't much care about dependencies.

[Andrey Ugolnik]

I have idea, try to do this:

$ git clone https://bitbucket.org/andreyu/simple-viewer-gl.git
$ cd simple-viewer-gl
$ git checkout development
$ make release
$ ./sviewgl /path/to/image 

[Sergey Il'inykh]

Doesn't work either. From cmake logs I see it now wants OpenEXR as well and I have not it installed. But probably it's unrelated.

[Andrey Ugolnik]

OpenEXR isn't required dependency. And viewer should fine compiled without it.

[Sergey Il'inykh]

I think I know why it doesn't work. I tries to use wayland for some reason but I'm currenty on X. And your code checks for errors on initialization but just silently exits on any failure.

Last few lines from strace

open("/home/rion/.config/sviewgl/config", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/localtime", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1281, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=1281, ...}) = 0
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\f\0\0\0\f\0\0\0\0"..., 4096) = 1281
lseek(3, -781, SEEK_CUR)                = 500
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\f\0\0\0\f\0\0\0\0"..., 4096) = 781
close(3)                                = 0
brk(0x73c000)                           = 0x73c000
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0) = 3
connect(3, {sa_family=AF_UNIX, sun_path="/var/run/user/1000/wayland-0"}, 31) = -1 ENOENT (No such file or directory)
close(3)                                = 0
exit_group(0)                           = ?
+++ exited with 0 +++

So it would be good if you added some printings on init failures.

[Andrey Ugolnik]

Error messages on GLFW initialization failure added.

[Sergey Il'inykh]

Nice, now we know a little more about the issue =)

$ sviewgl /home/rion/projects/psi/git/iconsets/system/default/logo_128.png
(EE) Can't initialize GLFW.

[Andrey Ugolnik]

This mean that your glfw library compiled without Wayland support.

[Andrey Ugolnik]

I add another glfw error handler.

[Sergey Il'inykh]

Now it's silent again. But atleast error code. glfw has been compiled with Wayland. But I'm not using Wayland at the moment. I guess it's glfw problem. It can't detect current graphical environment.

I'll try to recompile it w/o Wayland and report you back

[Sergey Il'inykh]

Yeah it works with glfw being compiled w/o Wayland support!

btw you application generates just insane amount of system calls.

[Andrey Ugolnik]

Like clean and swap_frame_buffer? ;)

[Andrey Ugolnik]

What about strace glxgears?

[Sergey Il'inykh]

the same but it's animated =)

[Sergey Il'inykh]

and glxgears has less EAGAIN (Resource temporarily unavailable)

[Andrey Ugolnik]

I think that is a normal for OpenGL applications. You can filter out unimportant messages.

[Sergey Il'inykh]

Well if it's possible to reduce the amount of syscalls laptop users definitely will be thankful =)