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Opengl without x11

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It only takes a minute to sign up. I am trying to run an executable on a remote server, to which I connect via ssh -Y.

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I think the executable uses openGL. This works well with other applications firefox, matlab etc. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 2 years, 1 month ago. Active 1 month ago. Viewed 8k times. Thank you!

Adam Gosztolai. Adam Gosztolai Adam Gosztolai 1 1 gold badge 5 5 silver badges 9 9 bronze badges. Are you using XQuartz? Yes, XQuartz 2. Try the following: 1 ensure you are running up-to-date Xquartz. This worked for me to get a simple java app running. I tried "glxgears" and it starts, but the gears don't turn. I presume they're supposed to.

I also get the glxgears displaying the wheels, but they do not move. Active Oldest Votes.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I want to write application for digital signage but I want it to run in minimal environment so I don't want X11 server.

Is it possible to run on one account OpenGl app without X11 or any other graphic drawing library with at least 2D graphics? Since for me the need to run opengl without xserver was primarily performance based, I opeted instead to install damn small linux to a flash drive along with the program i wrote.

Damn small linux is super small 50 mb for the entire osand since its designed to run on low spec hardware it can be run on a pentium 1 with 16 mb of ram it uses a minimal ammount of system resources.

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I just run ny application on top of damn small linux, and it performs extremely well. One way is via the Mesa off-screen rendering API. Be aware that this will most likely be unaccelerated. Learn more. Asked 8 years, 3 months ago.

Active 6 years, 7 months ago. Viewed 1k times. RzR 2, 24 24 silver badges 25 25 bronze badges. Hauleth Hauleth Active Oldest Votes. Joss Steward Joss Steward 26 1 1 bronze badge. Wayland is not nearly complete, and also the Wayland compositor will most likely require a physical screen.

OpenGL 3 & DirectX 11: The War Is Over

Technically Gallium could be extended to allow for GPU accelerated offscreen rendering, but so far this is not implemented.

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opengl without x11

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Featured on Meta. Community and Moderator guidelines for escalating issues via new response…. Feedback on Q2 Community Roadmap. Technical site integration observational experiment live on Stack Overflow. Dark Mode Beta - help us root out low-contrast and un-converted bits. Related 8. Hot Network Questions.This article is about running an OpenGL application on a remote server and using the local graphics card for rendering.

It can help you in different rare scenarios: 1. You have a server in your network and it has some software with graphical output. You want to use that software remotely on many computers in the network without installing it on each machine individually. Your application needs specific hardware configuration or resources that are only available on the server. You experiment with remote OpenGL rendering for some reason.

For demonstration we are going to play chromium-bsu running on a remote server using the local graphics card. You should be aware of the security risk of opening X server for hardware rendering.

The ssh server gets more control of the client with inderict rendering enabled. It runs in headless mode. I also have a laptop with Lubuntu Direct rendering — the OpenGL application sends instructions directly to the local hardware bypassing the target X server.

This is only possible with single machine. We cannot use it in our scenario. Software rendering — software rendering engine is used without leveraging the graphics card. It can be slow.

DirectX 11 vs DirectX 12 Test in 8 Games - R7 260x

Indirect rendering — The remote application sends instructions to the X server which transfers them to the graphics card. This is what we are going to demonstrate in this article. This article will not explain known topics. We assume that SSH is already configured and all packages and drivers are installed. U Connect to the SSH server. Please note that this represents a security vulnerability and disabled by default. You can only use in a trusted local network.And point 6 is where I am a bit stuck.

Will Mesa allow access to the graphics hardware? Does Mesa know about the hardware at all, or is it relying on some other library to deal with that, like for example DRI? But how do they work together? And is DRI usable without an X11 server?

What about SDL? I guess I need a brief explanation about what libraries to use in order to be able to draw graphics without X Any links and explanations will be appreciated! Are they dependant on the X Server? Does NVidia supply any header files for us to use their driver?

DRI is a X11 concept anyway. So, do as everyone else, use a fullscreen X window. Thanks for the answer! But, unfortunately, X is not an option. Surely X is not the only way to draw on the screen in Linux? There would be no problem in hardware-accelerating the 2d graphics outside of X, but does DirectFB provide OpengL support with hardware acceleration?

AFAIR it was working at some point with some drivers including the radeon driver. OpenGL: Linux. Encryptor March 17,am 1. Hi everyone!

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Thus, I need to include opengl headers I include the headers and now I want to compile my program.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

Introduction Most tutorials seem to start off with a discussion of how hard X is, how it will mess up your head and how only a masochist would ever write X code with alternates such as SDL out there.

This, in my opinion is just wrong. In the trinity of major operating systems i think X is the sanest, most reliable and cleanest designed window manager. With that in mind, lets create an OpenGL enabled X11 window for video games. A single machine can have X running in multiple instances. Creating an X Window The first thing to do when opening a window under x is to tell it where the screen is. It takes one argument, a string using the display format described above, or NULL to use the default.

This function takes one parameter, the pointer to the Display object that was found using XOpenDisplay. With just a display and a screen a window can be created with the XCreateSimpleWindow function. The prototype for this function is as follows.

opengl without x11

The first argument display is a pointer to the display object acquired using XOpenDisplay. The next argument, parent is a pointer to the window opening this one. This function takes one argument, the pointer to the screen that was acquired using DefaultScreenOfDisplay. The next four arguments are the location and sizeof the window. The next argument border is the color of the border.

The last paramater background is simply the background color of the window. There are several utility functions to acquire system colors of type ulong.Xlib is a library which provides functions for applications running under the X Window System also referred to as X. This includes window management as well as event handling. X is a network-oriented system: An application which is running on computer A can send its graphical output to computer Bwhich is located somewhere else in the network the network can be a LAN as well as the internetand can receive events like keyboard or mouse input from computer B.

This requires that a program called the "X-Server" is running on both computers. In Linux, the X-server is started with the command startx. You will most probably not have to start the X-server manually, because most Linux Distributions will set up the system to automatically start X after booting. In the following, a small program framework will be developed, which uses the GLX extension to the X windows system.

Only little knowledge of X will be needed; for a comprehensive introduction to X the "Xlib Programming Manual" by Adrian Nye can be recommended.

What is OpenGL?

They are mentioned for completeness. Their purpose will be explained below. What about With different colors, maybe at each vertex? This means the graphical output will be sent to the computer on which it is executed. The depth buffer shall be 24 bits deep, and a double buffer shall be used. The list is terminated by the value None. If you want to know about the capabilities that your graphics adapter provides, open a shell and type glxinfo.

You will get information about your OpenGL driver and which extensions it supports. To select a visual which matches our needs, we call. If glXChooseVisual returns with success, the visual's id will be output. If NULL is returned, there is no visual that fulfills your needs. In that case, check the output of glxinfo again. This should be considered especially if you want to create programs not only for your computer, but for other ones: You should code your program in a way that it can check a list of different combinations of visual attributes, because the capabilities depend heavily on the hardware.

Then, a structure of the type XSetWindowAttributes has to be initialized. This tells the X server that the colormap we created before shall be used for the window, and the window shall respond to Exposure and KeyPress events this will be explained later.

opengl without x11

At this point, the window can be created:. It is indeed possible to call XOpenDisplay twice or more often within a program, each time getting a new Display pointer.

This allows the program to send graphical output not only to the local computer, but as well to a remote one.Often, when we meet other game developers and say that we use OpenGL for our game Overgrowthwe're met with stares of disbelief -- why would anyone use OpenGL?

DirectX is the future. When we tell graphics card representatives that we use OpenGL, the temperature of the room drops by ten degrees. This baffles us.

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It's common geek wisdom that standards-based websites, for instance, trounce Silverlight, Flash, or ActiveX. Cross-platform development is laudable and smart. No self-respecting geek enjoys dealing with closed-standard Word documents or Exchange servers. What kind of bizarro world is this where engineers are not only going crazy over Microsoft's latest proprietary API, but actively denouncing its open-standard competitor?

Over the years, Iris GL grew bloated and hard to maintain, until Silicon Graphics took a radical new step: they completely refactored Iris GL and made it an open standard.

Their competitors could use the new Open Graphics Library OpenGLbut in return, they had to help maintain it and keep it up to date. Today, OpenGL is managed by the Khronos Group -- a non-profit organization with representatives from many companies that are interested in maintaining high-quality media APIs.

opengl without x11

Well, every gaming platform except for the XBox -- which brings us to our next topic:. For this reason, inthey created a proprietary set of libraries in order to encourage exclusive games for their new Windows 95 operating system. The XBox was a loss leader losing over 4 billion dollarsintended to set the stage to dominate the games market in the next generation.

Looking at the games scene now, it's clear that this strategy is succeeding. These are significant markets to leave out, bringing us to the big question:. Everyone uses DirectX because API choice in game development is a positive feedback loop, and it was shifted in favor of DirectX in It's a positive feedback loop because whenever one API becomes more popular, it keeps becoming more and more popular due to network effects.

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The most important network effects are as follows: the more popular API gets better support from graphics card vendors, and graphics programmers are more likely to already know how to use it. Ever since then, the network effects have amplified this discrepency until OpenGL has almost disappeared entirely from mainstream PC gaming.

This is caused by the vicious cycle of vendor support. As game developers are driven from OpenGL to DirectX by other factors, the graphics card manufacturers vendors get less bug reports for their OpenGL drivers, extensions and documentation.

The cycle repeats.

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