Opengl Code For Background

will be used to build the maze for Pac-Man and should both be the same color. This plot is then used as a bitmap background for the current RGL subscene. The Mac has fully embraced OpenGL throughout its visual systems. Here is a Makefile to complie all the sample code for Linux Run in the background while you're programming to increase productivity. Since 2001, OGRE has grown to become one of the most popular open-source graphics rendering engines, and has been used in a large number of production projects, in such diverse areas as games, simulators, educational software, interactive art, scientific visualisation, and others. Trying to draw and animate a tree in OpenGL The program uses OpenGL and my programming language is C++. Advertiser Disclosure: Some of the products that appear on this site are from companies from which QuinStreet receives compensation. I haven't seen many articles on the Web integrate functionality other than just setting a basic OpenGL window inside of an existing MFC control. First shipped 2018-09. It was designed by Yoichi obayashi. I tried to put jpg image like background ti my application. Thousands of boaters already use OpenCPN as their main navigational tool. The bot is assigned a material. The OpenGL Code we presenting have many of the good features. com Free online OpenGL 4. The install guide should make everything clear. Visual C++ allows you to have multiple concurrent threads of execution running simultaneously. My interests lie at the intersection of art and code with a focus on robotics, ubiquitous computing and wearable technology. Angel uses a top-down philosophy to teach computer graphics based on the idea that students learn modern computer graphics best if they. Today, we want to share with you a really cool and very acceptable implementation made in the C language using OpenGL. Console commands can also be added to the launch options in order to activate it on startup. This project is Craft, a Minecraft clone for Windows, Mac OS X and Linux. Normally if you paint a background image you simply draw a textured full-screen square while depth testing and writing is disabled before drawing the actual scene (where you re-enable depth) In the code you posted you draw the quad but then clear the screen again. 0 in Windo. To avoid having to write the same code every time you want to create a graphical application using OpenGL, this program code can be used as a template to get you directly started with what matters to you in the program. How to Install Mesa (OpenGL) on Linux Mint. This time I am here with some more OpenGL and something I always wanted to tackle; heightmaps. In this program ,I show some simple OpenGL code. Modern computers have dedicated GPU (Graphics Processing Unit) with its own memory to speed up graphics rendering. 2 million lines of source code examples to build from. It is completely cross-platform, using D3D, OpenGL and its own software renderers, and has all of the state-of-the-art features which can be found in commercial 3d engines. When using OpenGL in a WPF window, there are some well known issues due to the pixel ownership of WPF. Up until this point I haven't really done a good job of explaining why, courtesy of Twitter's 140 character limit, however the land of graphics API's has recently gotten really interesting with AMD's announcement of Mantle and Valve throwing its weight behind Linux. and one background image. On OS X, open the opengl-series. The second thing that we change is the depth test function. I am trying to set a background image of my openGL window by creating a quad on an orthogonal projection matrix and adding texture to it. Create a display function where you will be drawing your shape and objects void display(). 0 (or greater), which you agree to when using this program or its source code. 0; GLuint LoadTe. CD Keys Gift. Part of the changes of the branch alvin/T6696-opengl-angle (up to e3b45ab77508e59e3d9929d3fb212519603f7b7b). 1 to PalmOS. Free Graphics Libraries, 2D & 3D Engines, Image Drawing. 0 in Windo. However, in the case of a skybox the Z value is always the far Z (see above). This will generate the OpenGL C code required to render the vertices and the primitive that defines the relationship between them. OpenGL for Palm OS Environment 124 Posted by Hemos on Saturday March 04, 2000 @01:15PM from the fun-with-graphics dept. For more information about versions of OpenGL ES, see the OpenGL developer guide. Hardware and software implementations exist on various operating systems, including Windows, Linux and MacOS. accessories/manifest api_council_filter Parent for API additions that requires Android API Council approval. Background texture in opengl? Programmers Discussion Forum. What is the result ? Give 3 different ways to fix this. I’m tired of bullshit bloggers who create these lists, only to include ten premium ones and one free one, without ever telling the user. There is nothing extraordinary going here. One of the major accomplishments in the specification of OpenGL [14,10] was the isolation of window system dependencies from OpenGL's rendering model. Remember, these are all free background generators, and there is no need to wonder whether they are. This is an OpenGL specific // implementation for this project. NeoAxis Group announces a new 3D development environment NeoAxis Engine version 2019. OpenGL under Python is largely the same as OpenGL under most other languages, so you can use much of the documentation you'll find around the Internet, or in your local bookstore. 1 provides only a basic fixed-function graphics pipeline. Today’s Best iPhone Deals. All the source code on this site (except third-party libraries) is released under the WTFPL Public Licence :. So I started writing my application in C++ using OpenGL, SDL and in about a week, this was the result. Being able to define shapes to be drawn in the context of an OpenGL ES view is the first step in creating your high-end graphics masterpiece. Of course, there is much more to it than that, and you will be glad to know that this book explains the finer details of OpenGL. OpenGL Graphics Code: Build a house with GLUT. 0 that requires frequent texture loading and unloading. You can create a quad and apply an image as texture to it, but that seems like a long way around what must be a very common requirement for graphic programs. By querying this, you can detect. The result is that OpenGL is window system independent. Here's the relevant code from my program:. RGB stands for the colors red, green and blue: the additive primary colors. OpenGL Architecture OpenGL is a big state machine. pl BUG: b/32916152 assets/android-studio-ux-assets Bug: 32992167 brillo/manifest cts_drno_filter Parent project for CTS projects that requires Dr. Right, I can do that, but how do I keep the background in place once I call gluLookAt with a different eye, lookat and updir vectors? I'm trying to have the texture background regardless of the changes to the modelview. Beginning Game Programming Last Updated 6/28/14 Welcome to the legacy SDL tutorial page. D from the University of Oregon. Functions performed include window definition, window control, and monitoring of keyboard and mouse input. If you click the save button, your code will be saved, and you get an URL you can share with others. - - The Computer Graphics Programming in C for Laptop Developed by our user. You may have to register before you can post: click the register link above to proceed. To make the tutorials easier to follow and give them some added structure the site contains boxes, code blocks, color hints and function references. #include #include #include #include #include using namespace std; int r,p,flags=0; void myInit (void. I have an application where I need to create a gui containing a image background (a drawing) that will, at times, have graphical objects moving over the top of it. How do I create a string in C# is an article in which author demonstrates the procedure for constructing string using string builder. Colors in OpenGL are generally represented as floating point numbers between 0. These are low-level introductory tutorials which generally use the legacy OpenGL API. Implementations and bindings exists for several languages such as Java, Python, Ruby and Objective C. Because this errors are not always obvious to me, I would like to ask if there is any particular IDE for writing OpenGL Code, executing and debugging it. OGLFT is hosted on SourceForge. Hi, I am new at using OpenGL and was wondering if anyone knows if you can render OpenGL on top of a static background image, such as a. OpenGL ES May Not Be Used in Background Apps. Download Presentation. I also included a simple implementation of a smart pointer, which makes it much easier if you have several objects using the same texture, but you don't have to use it to load textures. Advertiser Disclosure. Sphere Mapping Quadrics In OpenGL. You can create a quad and apply an image as texture to it, but that seems like a long way around what must be a very common requirement for graphic programs. Assume that black (all zeros) is the background color, and the color of a live pixel is nonzero. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology. Below is a simple Game made using OpenGL. However, it looks like I. 0 to perform 2D and 3D rendering in an HTML canvas in browsers that support it without the use of plug-ins. Open Graphics Library (OpenGL) is a cross-language (language inependent), cross-platform (platform independent) API for rendering 2D and 3D Vector Graphics(use of polygons to represent image). cial OpenGL specification which maps OpenGL API calls to ray tracing calls similar to GLuRay [BFH12]. Chapter 2 Installation and Configuration on Windows. Follow the steps below to setup an OpenGL GLUT project: From the Dev-C++ menu, select File -> New -> Project. Each vertex is actually written at least 3 times (search “-1. 1 Background. Also tried some others arcball implementations but no. Note: Major development has been moved to OBS Studio If you wish to contribute, please visit the repository for OBS Studio instead. He has served as Noyce Visiting Professor at Grinnell College and also holds the position of Gemperle Distinguished Professor of Computer Science emeritus at California State University, Stanislaus. This will generate the OpenGL C code required to render the vertices and the primitive that defines the relationship between them. changing background color of JFrame isn't a good habbit to get into because it doesn't work with every method of a JPanel as you have illistrated and your code. Flat style vector illustration isolated on white background. If support for either of these is lacking, the driver may fall back on a software renderer that may trade quality for speed. 1 on Windows. Apache NetBeans is free and open source and is governed by the Apache Software Foundation. Vertex Shader - OpenGL ES graphics code for rendering the vertices of a shape. accessories/manifest api_council_filter Parent for API additions that requires Android API Council approval. This makes changing the background color just using glClearColor (as Andrew Baldwin suggests) and then clearing and redrawing the scene as normal. We just want the directions. last update 2011. OpenGL ES 2 for Android A Quick-Start Guide by Kevin Brothaler. 0, OpenGL ES 2. Apache NetBeans is free and open source and is governed by the Apache Software Foundation. I'd probably start by trying a variation of the first method: - Preallocate textures on the GPU ahead of time (glTexStorage2D(), or glTexImage2D() with null data) - Load the image in a background thread - Use glTexSubImage2D() in the render thread Preallocating the textures saves time later. 2 thousand tutorials and articles to learn from. For real, do-it-yourself developers, it is also possible to build up an OpenGL ES view using SurfaceView, but this requires writing quite a bit of additional code. Trying to draw and animate a tree in OpenGL The program uses OpenGL and my programming language is C++. In computer graphics, when a given image is intended to be placed over a background, the transparent areas can be specified through a binary mask. Because images contain a lot of black color, regular min blending would result in having black square on the screen. Download with Google. RGB stands for the colors red, green and blue: the additive primary colors. That said, we still want to draw text with OpenGL. Hi! I have a couple of questions regarding background image with OpenGL. Get Help Now. Save Your Code. Flying A Bird In Opengl Codes and Scripts Downloads Free. OpenGL graphics library could then render 3D shapes on top of the webcam images, using the coordinates of those closest objects to bring them alive in front of our eyes! The Python OpenGL code from the last post did the following during initialisation: Set up and compile vertex shader and fragment shader programs for rendering a webcam image. You can change car background and car colour using mouse and keyboard keys. Preface: What is OpenGL? On the most fundamental level, OpenGL is a software interface that allows a programmer to communicate with graphics hardware. Description This property sets the background image of an element via the specified URI. Using OpenGL tessellation. #include. Could you edit your post and put the code in code tags? That will make it easier to read. Hello world: drawing a square in OpenGL The following code fragment demonstrates a very simple OpenGL program which opens a graphics window and draws a square. Creating a GLSL Library [Added: 10/29/2007]. ; How to draw OpenGL to a window you created in a dialog box with the resource. Codementor is an on-demand marketplace for top Opengl engineers, developers, consultants, architects, programmers, and tutors. Don’t forget to cut’n paste the code on a regular basis. com, forums. This project was developed by Cédric Baudry during his intership at CEA for the engineering school UTC. GStreamer on iOS, how to handle background properly for OpenGL ES?. This plot is then used as a bitmap background for the current RGL subscene. I'm wondering if it's possible to setup a window, with no decorations AND with the transparent background, while allowing me to render OpenGL stuff on it. I tried to put jpg image like background ti my application. Background is called once in setup, after that the drawing is accumulative. Without OpenGL accelleration Vuze was extremely sluggish. Welcome to LinuxQuestions. For me it's simple because i study a lot of programming language and i remember all the tricks of the programming. I want to change background color of the window after pressing the button, but my program doesn't work, can somebody tell me why, thanks in advance int main(int argc, char* argv[]) {. Hi! I have a couple of questions regarding background image with OpenGL. Re: OPENGL code (flickering error) Reply #5 - Jul 2 nd , 2009, 8:47pm Not to bring back a topic that's been discussed to death, but I found today that enabling/disabling the Aero theme in Vista can fix the flickering / tearing in opengl applets. OpenGL's object is made up of primitives (such as triangle, quad, polygon, point and line). This tutorial is designed to help explain Vertex Array Objects(VAOs), Vertex Buffer Objects(VBOs), Vertex and Fragment Shaders. This is the code for calculating solid angle C, surface pressure ps, and field pressure pf coming. For more information about versions of OpenGL ES, see the OpenGL developer guide. The drawing surface should have the rendering of an OpenGL sphere. Up until this point I haven't really done a good job of explaining why, courtesy of Twitter's 140 character limit, however the land of graphics API's has recently gotten really interesting with AMD's announcement of Mantle and Valve throwing its weight behind Linux. Distributed OpenGL Rendering in Network Bandwidth Constrained Environments. changing background color of JFrame isn't a good habbit to get into because it doesn't work with every method of a JPanel as you have illistrated and your code. I want to be able to have a background image for my opengl application. To set the text color, use color; To set a border color, use border-color. OVERVIEW Brief introduction to 3D rasterization and OpenGL Creating a basic OpenGL window and context Using OpenGL to draw images. how to make the background transparent. com, codeproject. Got to you graphic card(s) 3. a) •OpenGL Utility Library (GLU) - Provides functionality in OpenGL core but avoids having to rewrite code •Links with window system - GLX for X window systems - WGL for Windows - AGL for Macintosh. In particular, look at the following files in your Android Studio project. I got side effects of antibiotics (levofloxacin,ciprofloxacin) and am currently not able to continue the voxel development. Illustrates how to incorporate OpenGL into the MFC printing and print preview frameworks. Made by Evan Wallace. Basic step to make any program on OpenGL is created a window where all the code will work so how it we can create it?. Intel 3150 officially doesn't support OpenGL 2. These are low-level introductory tutorials which generally use the legacy OpenGL API. GLava is a simple C program that sets up the necessary OpenGL and Xlib code for sets of 2D fragment shaders. I would like to have that. We will then create a sprite called Ghost 1 with a single costume. Its main purpose is to assess the geometry power of various. First shipped 2018-09. That said, we still want to draw text with OpenGL. Console commands can also be added to the launch options in order to activate it on startup. Nebula Nuker free steam key giveaway on SteamGateways. The sixth parameter is the format we want the data in. 33-megapixel (8192x4096) textures so it looks. Look at most relevant Opengl projects code for swimming websites out of 36 at KeyOptimize. I use Code:Blocks and it's better than C Free5 because Code:Blocks has more options like i don't know etc etc and it's a free compiler. I have been able to get code to compile with vs but we are not able to compile using Dev C++ gcc. OpenGL ES 2 for Android A Quick-Start Guide by Kevin Brothaler. Time for a bit of Python code. Tony McGregor. Program - An OpenGL ES object that contains the shaders you want to use for drawing one or more shapes. the downloads and list here are out of date. Example for PC game developers to show how to combine texturing, reflections, and projected shadows all in real-time with OpenGL. Delphi Programming. GitHub Gist: instantly share code, notes, and snippets. This would give the illusion that the triangle is floating on the screen. Do not take the autosearch, search by yourself 5. I'm trying to achieve similar thing - drawing with OpenGL on transparent window so I bumped into it. Take again the Option below, that one with the list of the Installed Drivers 6. Blending Advanced-OpenGL/Blending. The camera in OpenGL cannot move and is defined to be located at (0,0,0) facing the negative Z direction. Opengl 3d space sun as background found at ntu. It’s simple to post your job and get personalized bids, or browse Upwork for amazing talent ready to work on your opengl project today. will be used to build the maze for Pac-Man and should both be the same color. Download it once and read it on your Kindle device, PC, phones or tablets. 02/08/2017; 5 minutes to read +1; In this article. Advertiser Disclosure: Some of the products that appear on this site are from companies from which QuinStreet receives compensation. Python has a huge number of GUI frameworks (or toolkits) available for it, from TkInter (traditionally bundled with Python, using Tk) to a number of other cross-platform solutions, as well as bindings to platform-specific (also known as "native") technologies. More information Find this Pin and more on house near the city by Eron Ahamed. The example code in this class uses the OpenGL ES 2. HTML color picker. DesktopEarth. This program is just a demo to draw a different shape object and I. OpenGL ES 2 for Android: A Quick-Start Guide (Pragmatic Programmers) [Kevin Brothaler] on Amazon. For example, the background image could be 256 x 256 pixels or 1024 x 1024 pixels. OpenGL Basics Doug Bowman (based on notes by Yong Cao) References: 2001 Siggraph, “An Interactive Introduction to OpenGL Programming”, Dave Shreiner,Ed Angel, Vicki Shreiner Official Presentation from Text book “Computer Graphics using OpenGL”, chapter 2 OpenGL and GLUT Overview What is OpenGL & what can it do for me? OpenGL in. Creating and Saving Images to a Database in ASP. OpenGL: Introduction. I'm using Vuze 4. I know it's 2yo code, but. You might find a package for your favorite distribution. A few remarks on this code : For now, our 3D model is fixed : in order to change it, you have to modify the source code, recompile the application, and hope for the best. 0 to apply a texture to a rectangle in order to draw an image on the screen. It contains just a few thousand lines of C using modern OpenGL (shaders). Time for a bit of Python code. On each iteration the draw method clears the color and depth buffers. Call pygame. http://abdullahkuzhan. (Obviously there's not much code there and I'm sure someone could diagnose the problem as it is currently, but it would be easier with proper formatting. The type of the red, green, blue, and alpha parameters was changed from GLclampf to GLfloat. 0 for Windows. I am trying for white so I used: glClearColor(1. See release notes. Specify 'figure' to. OpenGL, a noob’s guide for Android developers. 1 provides only a basic fixed-function graphics pipeline. No strings attached, no royalties, nothing. 0 openGL based template program. Note: Major development has been moved to OBS Studio If you wish to contribute, please visit the repository for OBS Studio instead. conf is a configuration file that DOSBox can use globally and/or locally per game (and settings that are left out are taken from the global file). Colors in OpenGL are generally represented as floating point numbers between 0. OGLFT is hosted on SourceForge. Figure 1-1 : White Rectangle on a Black Background. OpenGL - Free source code and tutorials for Software developers and Architects. org, github. In this tutorial we will make a minimalist OpenGL 2. For the brick-wall example, if the wall is square and meant to represent one copy of the texture, the code would probably assign texture coordinates (0, 0), (1, 0), (1, 1), and (0, 1) to the four corners of the wall. Color HTML / CSS Color Name Hex Code #RRGGBB. This color means the code or text so designated is specific to the use of Microsoft Visual Studio; This color means the code or text so designated is specific to the use of OpenGL; I'm also providing an open-source example of a working screensaver using OpenGL and satisfying all my assumptions. The Pentamollis Project 21,967 views. (No Source Code) Punjabi. PyOpenGL Documentation General Background. You can type in the address you want and a code will be ready for you to insert in your design. In This Section. You can choose the base color, pattern, intensity and a few other settings. Not sure to be honest, but all I can say is that I get more frequent crashes (OpenGL Error: Code 8 [EventID 1]) in Minecraft when I have OR HAD a web browser open. "Questions about debugging a problem in your project must present a concise selection of code and context so as to allow a reader to diagnose the issue without needing to read all of your code or to engage in extensive back-and-forth dialog. SDL_WINDOW_SHOWN is ignored by SDL_CreateWindow(). The code need to be Fig. Create a background image. Download with Google. The type of the red, green, blue, and alpha parameters was changed from GLclampf to GLfloat. Specify 'figure' to. code itself is fairly trivial though. Right click, and select the 'Generate Code' menu item. Specifying Colors in OpenGL OpenGL has two color modes — the RGBA mode we have already seen, and color index mode. JOGL (Java OpenGL) Tutorial. Examine the code supplied by the template. Now, if rotated coordinates exceed the interval, only the additional edge layers are repeated creating a noiseless background. I am trying to set a background image of my openGL window by creating a quad on an orthogonal projection matrix and adding texture to it. 9] Shading in OpenGL Flat Shading Assessment • Inexpensive to compute • Appropriate for objects with flat faces • Less pleasant for smooth surfaces. Save Your Code. It consists of well-defined subsets of desktop OpenGL. It is completely cross-platform, using D3D, OpenGL and its own software renderers, and has all of the state-of-the-art features which can be found in commercial 3d engines. We will assume that the reader is familiar with his/hers C development platform, and has some knowledge of the GLUT library (otherwise just follow the "GLUT programming" series of articles in this magazine). Sample Chapter; Security; C++ ». Most of the code is cross-platform (will run on Windows, Mac, and Linux), but the different platforms do have different ways of creating new windows and monitoring user input. it will draw a small window with a spicy red background :-) Put this code in a main. I also included a simple implementation of a smart pointer, which makes it much easier if you have several objects using the same texture, but you don't have to use it to load textures. x API calls with OpenGL ES 2. OpenGL Programming on Mac OS X: Architecture, Performance, and Integration [Robert P. Some of the features is listed below - Light Options - As in any traffic signal you will see the three lights - red, yellow and green. Remember when searching for learning opengl opengl framework program, find some opengl code fragment can't try, now all you have to do in the CopenglTemplateView::Ondraw function fills in opengl drawing code, you can see the effect. I'm writing a simple 2D game with C++ and OpenGL/GLFW, and my current step is to create a menu. OPENGL fountain codes. 16, the public domain code from Sean Barrett (found here). Of course, the next step is to re-enable that code that does the normal rendering magic. Free Projects & Source Codes At Source Codes World. In pseudo-code :. Most calls to OpenGL functions modify a global state that you cannot access directly. Newer versions of the OpenGL Pipeline are even more complex! Figure 2. This is an extension to the project developed by Chris Pruett, which can be found here [1]. You may have to register before you can post: click the register link above to proceed. Advertiser Disclosure. 0 Programming Guide by Aaftab Munshi, Dan Ginsburg, and Dave Shreiner. Examine the code supplied by the template. pl BUG: b/32916152 assets/android-studio-ux-assets Bug: 32992167 brillo/manifest cts_drno_filter Parent project for CTS projects that requires Dr. Hello Map! Take a look at the code. Below is a simple Game made using OpenGL. Nebula Nuker free steam key giveaway on SteamGateways. I am moving onto some bigger projects using 3D engines, since for one person, OpenGL is kind of overkill (at least for a fully featured game). HTML color picker. Bitbucket is more than just Git code management. Texture Wrapping. QR Code Docker is a program that enables you to quickly create just the code you need for your projects in CorelDRAW X6. Tetzle is a jigsaw puzzle game that uses tetrominoes for the pieces. It’s simple to post your job and get personalized bids, or browse Upwork for amazing talent ready to work on your opengl project today. Since I started studying OpenGL, many times I bump on errors. Previously, Sketch was a QGraphicsView based application, which offers a hook to draw something in the background. Seasonal cheap deals and new product rollouts offer a lot of chances to score some deep discounts on your cell phone. In this tutorial you will see seven simple OpenGL programs each successive one building on the previous one. 0, provided by Aleksandar Kodzhabashev. x tutorials where we do just that (OpenGL 4. GLuint texture; //the array for our texture GLfloat angle = 0. 0 opengl based template program. This project is Craft, a Minecraft clone for Windows, Mac OS X and Linux. It contains the following code:. Take again the Option below, that one with the list of the Installed Drivers 6. OpenGL Graphics Code: Build a house with GLUT. device/aaeon/upboard device/amlogic/yukawa Bug: 122486287. Benjamin Monjoie. Load the libraries #include #include 2. It consists of well-defined subsets of desktop OpenGL. References. To set a background color, use background-color. Note that my CTexture class that you will be using can read PPM and BMP files. Now we can take a look at the handler for the OpenGLDraw event. Currently there is an OpenGL back-end for NanoVG: nanovg_gl. designates the order to render software, hardware and custom-opengl-code. by Joshua Shelfer. I would like to first set a background image. You can create a quad and apply an image as texture to it, but that seems like a long way around what must be a very common requirement for graphic programs. OpenGL is a standardized API used to draw 3D graphics to the screen (similar to DirectX / Direct3D). openglprojects. It's More Fun to Compute An Introduction to Compute Shaders Anton Gerdelan. OpenGL Shading Language (GLSL), is a high-level shading language with a syntax based on the C programming language. I want to set a background for an openGL window for mac. In computer graphics, when a given image is intended to be placed over a background, the transparent areas can be specified through a binary mask. This is a single document VC6. The OpenGL registry is also quite useful. Below are quick CSS code examples for applying this color to various HTML elements. webgl animation / cloth animation / keyframes animation / skinning / blending animation / skinning / morph animation / multiple camera camera / array camera / cinematic camera / logarithmicdepthbuffer clipping clipping / advanced clipping / intersection clipping / stencil decals depth / texture effects / anaglyph effects / ascii effects / parallaxbarrier effects. Also tried some others arcball implementations but no. a) •OpenGL Utility Library (GLU) - Provides functionality in OpenGL core but avoids having to rewrite code •Links with window system - GLX for X window systems - WGL for Windows - AGL for Macintosh.