GLX (initialism for "OpenGL Extension to the X Window System") provides the interface connecting OpenGL and the X Window System: it enables programs wishing to use OpenGL to do so within a window provided by the X Window System.
Questions tagged [glx]
179 questions
2
votes
0 answers
ffplay over X11 throws BadRequest GLX error on Ubuntu system
I'm using XLaunch Windows X server on my Win10 box to reach the Ubuntu 18 box with ssh -Y. The computer is remote and inaccessible. No keyboard and screen attached. lshw dump below. Does the video hardware even matter when using X11?
xclock,…
MAXdB
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2
votes
1 answer
Compositor is blending OpenGl even when fragments alpha's are 1.0
The following code (a bare minimal example) produces a triangle on top of a plain color screen. The triangle and the screen colors have alpha values of 1.0, but still when the program is run with compositor enabled (X11/KDE system settings) the…
Pablo Yaggi
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2
votes
0 answers
My Nvidia drivers are not used for OpenGL rendering?
I am trying to execute a c++ code which is using OpenGL(4.x is needed) on Red-hat linux OS. it is throwing the below error.
X Error of failed request: GLXBadFBConfig
Hardware info:
OS: Linux POWER LE RHEL 7
Accessing the screen through VNC…
Satya Harish
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2
votes
2 answers
How to run Gazebo on Google Compute Engine with GPU?
I am attempting to run Gazebo in an Ubuntu 16.04 Google Compute Engine instance with 1 NVIDIA Tesla K80 GPU. The GPU is configured using the following drivers, which are necessary because I am also using Tensorflow in my application.
A solution to…
Jon S
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2
votes
0 answers
GLX manual pages under OS X
I am running OS X 10.11 and am doing some X11 OpenGL programming. I can access X11 man pages as well as OpenGL man pages using commands like this:
man XCreateWindow
man glVertex
However, when I try to access man pages for GLX, nothing comes up. I…
user109923
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2
votes
1 answer
When rendering OpenGL to offscreen framebuffer, is windowing system support still needed?
If all I want to do is to do some rendering with OpenGL functions, without even creating a window. Do I still need to use libraries like glx to bind OpenGL with platform windowing system?
If I don't need to, then where is OpenGL context created? As…
A.Stone
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2
votes
1 answer
How to create OpenGL-enabled window with transparent background using xlib and glx
I'd like to create a window with transparent background and then render something onto it using OpenGL. I don't want to use the trick where whatever is behind the window is captured and then painted as a background - I want real transparency (I have…
Adam Cigánek
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- 3
2
votes
1 answer
GLX context framebuffer reading
I'm trying to read pixels from GLX context. here is how I'm creating context
int Attributes[] =
{
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DOUBLEBUFFER, GL_TRUE,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
…
Alatriste
- 527
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2
votes
2 answers
multiple definition of `glwMDrawingAreaWidgetClass'
I'm porting an application to Linux, written on IRIX (and successfully ported to AIX (years ago)). One of the issues I found was glwMDrawingAreaWidgetClass is not supported on Linux (use glwDrawaingAreaWidgeClass no 'M'). So I switched it. I…
Thaddeus
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- 6
2
votes
1 answer
GLX/GLEW order of initialization catch-22: GLXEW_ARB_create_context, glXCreateContextAttribsARB, glXCreateContext
Currently I'm working on an application that uses GLEW and GLX (on X11).
The logic works as follows...
glewInit(); /* <- needed so 'GLXEW_ARB_create_context' is set! */
if (GLXEW_ARB_create_context) {
/* opengl >= 3.0*/
.. get fb_config ..
…
ideasman42
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2
votes
0 answers
Trying to compile GTK+3 without GLX
I am trying to use GTK+3 on an embedded system that has OpenGLES, and there is no GLX on that platform.
My test program is as simple as :
main()
{
gtk_init();
}
As soon as I start this test program, I have a runtime error : glXQueryExtension()…
Nabil
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- 2
2
votes
1 answer
How do I find the glx library name?
I am trying to use a glX function (glXSwapIntervalMESA()) but the compiler is returning an undefined reference error.
I have tried linking with X11 and Xext, and glx, though the last library apparently does not exist. libGL includes some entry…
sebf
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2
votes
1 answer
OpenGL + GLUT over SSH seg faulting
I am trying to run an OpenGL+GLUT program over SSH with X forwarding. The program provides the following errors, then seg faults.
Xlib: extension "NV-GLX" missing on display "localhost:10.0".
It seems that this is being caused because my "server"…
Jomnipotent17
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2
votes
1 answer
Multiprocess headless OpenGL processing on EC2 GPU instances
My core problem is that I need to run multiple OpenGL executables concurrently on an EC2 GPU instance; I'm observing non-deterministic segfaults when trying to do this. The same program runs fine (with concurrency) on my Macbook Pro.
The…
user2543994
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- 3
2
votes
1 answer
Why does my simple GLX app leak memory?
The code below shows a small 48 byte leak in valgrind.
#include
#include
#include
int main( int argc, char* argv[] )
{
Display* _display;
Window _windowHandle;
XVisualInfo* _visual;
GLXContext…
dicroce
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