How To Do OpenGL Within A VB .NET Environment
Feb 17, 2012
I was trying to learn how to do openGL within a VB .NET environment and it seems that the Tao framework or OpenTK is recommended with OpenTK having a higher recommendation so that is what I chose to try using. Since I am brand new to this, I am trying to just draw a simple box, triangle, or anything really so that I can understand it all before making more complex things. I have been unsuccessful at this so far so I will list in order what I have done so far and hopefully someone here can help me correct it or provide a new example just so I can draw a simple shape.
1) I installed OpenTK using opentk-2010-10-06.exe
2) In a new project I added the references to OpenTK.dll and OpenTK.Compatibility.dll
3) I added the control (opentk.glcontrol.dll)
4) I added the actual control to my form.Using some examples online I added the rest:
5) I wrote my references in:
Imports OpenTK
Imports OpenTK.GLControl
Imports OpenTK.Platform
[code]....
The above results in no display?
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Dec 15, 2009
I have VB6 Dll which I am referencing in vb.net ,I am calling the following function in it. It working fine in developemnt environment but not in deployement environment.
Error Method not found: 'Boolean MyUtils._MyUtils.LoadMyObjectRecords(ADODB.Stream ByRef, System.Array ByRef)'.
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Feb 24, 2009
I want to add opengl to my vb.
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Nov 6, 2010
I was wondering if anyone could steer me to any good references to using OpenGL in vb.Net? I wanted to try a simple line drawing test to start off with, and came across many old discussions about using CsGl or the Tao Framework. But I could not get CsGL to import into Net2008 (the Add Reference window simply could not see the DLL that was clearly there when using Windows Explorer). And although I could get Tao to import OK, and found portions of one person's project, I figured that somehow the GL window he was referring to had to first be set up as a GL object (new class?).In addition, all the OpenGL books I have looked at only discuss OGL with respect to some version of C.From what I have gathered, you need a connector between vb.Net and the opengl32.dll libraries and that is what CsGL and Tao are about. But the edumucation resources seem very few.
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Sep 13, 2011
I wanted to install visual Basic or C++ (but Basic really seems easyer to use) with DirectX or OpenGL but I can't get it to work!I've tried Visual Basic Express 2008 and 2010 and i'm getting the same type of errors...
-> Directx
When I try this program [URL]with VB I either get
with 2008 : just a red cross on a blank screen
with 2010 : an unlimited waiting time, and when i click i get an error message that tells me to continue waiting, im forced to CTRL -ALT - DEL to shut down VB.
-> OpenGL:So i've tried a lot of times! they tell me that it's already installed on windows so i don't need any installation but then VB gives me alot of errors, telling me that some part of code isnt recognized!!
i've tried tutorials with Csgl or Tao, but none seem to work...I already got some knowlege of OpenGL but not DirectX, so could anyone please tell me which one does work on my computer and is best for creating a graphics window inside an API that i create, for instance a mob maker?
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Apr 6, 2011
how to write program based on OpenGL in VS? cause when i begine debugging ,it says library not found..
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Jan 31, 2009
i want to do a graphics project in Vb.net but have to use OpenGl Libraries . How do i download compatible OpenGl package and how to use them in my .net code.
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Oct 9, 2010
I render a complex shape in OpenGL which requires a lot of calculations, is there anyway to export that to a state like a model that can be opened again later given you wont edit it again?
I can't create them outside the program (with something like Blender) since the shape is computed when the program starts. The render then gets translated, rotated, drawn over, etc. Note, that I don't need to edit the shape though, but I do want it in a 3D state so saving an image isn't an option.
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Aug 3, 2010
i heard OpenGL is 3D and it can be used in visual basic for models and games. Now i dont know if OpenGl is a contol or coding script. But i want to know how to make a simple model in OpenGl in visual basic.
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Jan 4, 2011
I am trying to create a tool to make terrains for my game and would like to develop it in Visual Basic Express 2010. I want to use OpenGL but am having trouble.1. Will VB support OpenGL 3.x or higher?
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Nov 12, 2010
I am running into the strangest problem that I just can't place my finger on. I've been developing an application in VB.net for the last couple months in Windows 7. The program involves some basic OpenGL drawing and animation with basic shapes (squares and circles) and basic textures mapped onto pointlists. The time has come to distribute the program to another machine. On some machines though, I encounter problems when I'm drawing textures. I know that openGL is still functional because drawing basic squares and circles still occur, the textured objects are the only things missing.
[Code]...
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Sep 3, 2010
I'm working on a game engine, and I want to be able to draw a billboarded (i.e. rectangular to the screen) quad with the center-bottom of the quad being determined by a single point.
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Jun 22, 2010
i have to do a college project on this platform so i decided to learn open GL. while working with glui i am facing some problems. i downloaded glui-2.36. I thought of starting with the example1 (code added at bottom of the post) that was included in source folder of glui-2.36. i am using VB.net 2008 When i build the project it gives me 3 errors:
error C2661: 'GLUI_Checkbox::GLUI_Checkbox' : no overloaded function takes 3 arguments
error C2661: 'GLUI_Spinner::GLUI_Spinner' : no overloaded function takes 3 arguments
error C2227: left of '->set_int_limits' must point to class/struct/union/generic type
Here is cpp code:
#include <string.h>
#include <GL/glui.h>
/** These are the live variables passed into GLUI ***/
int wireframe = 0;
[code]....
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Oct 19, 2010
I'm currently running into a problem regarding animation in OpenGL. I have between 200 and 10000 gears on the screen at a time all rotating. When the window is not in maximized view, my CPU runs at about 10-20 % consistently. No spikes, no stuttering in the animation, it runs perfectly smooth regardless of the number of gears on screen. When I maximize the window though, everything falls apart. My CPU maxes out, I begin getting weird spikes in CPU usage, the animation begins stuttering as a result, and it just looks really ugly, even when I have only 200 gears on screen.
My animation technique looks like this:
While Animating
Calculate current rotation angle based on a running timer
draw Image
call glFlush()
End While
I'm using the Tao framework in VB.net. I'm not performing any other calculations other than the ones to calculate the rotation angle mentioned above and perform a few glRotateD and glscaleD in the method to draw the image.
In addition, I guess I was under the impression that regardless of the window size in an orthographic 2-dimensional drawing that is scaling on resizing of the window, the drawing time would always take the same amount of time. Is this a correct assumption?
Note that I've seen the animation run perfectly smooth at full screen before. Every once in awhile, OpenGL will decide it's happy and run perfectly at full screen using between 10-20% of the CPU (same as when not maximized). I haven't pinpointed what causes this though, because it will run one time perfectly, then without changing anything, I will run it again and encounter the choppiness. I simply want to pinpoint what causes the animation to slow down and eliminate it.
I've run a dot trace on my program and it says that the swapBuffers method is using 55 % of my processing time even though I'm never explicitly calling the method. Is the method called by something else that I can eliminate, or is this simply OpenGL's "dead time" method to limit the animation to 60 fps?
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Sep 28, 2011
make a openGL overlay so for an examplei play a game and when i click shift + tab then the game will fade and my application will be seen but without minimizing the game
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Jul 26, 2011
Does anybody know how I can render openGL into a Visual Basic 2010 picture box?If you havent already done so please delete the abusive posts that responded to my original enquiries. I have decided to start a new thread on this subject rather than in an existing thread because it's more convinient for me.
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Dec 25, 2011
i have installed visual studio 2010 32 bit on my new computer which have windows 7 64 bit. Everything seems ok. But now I try to learn how to draw some spheres with movement. I have tried to install openGL2 but it does not work or said that it does not fit with 64 bit, or it works only with VC.
Could any one, please, give me a short introduction to install and use open GL in vb.net 2010 installed on windows 7 64 bits ?
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Sep 23, 2011
We have a GIS application that has some performance issues. It creates and sends an image to a web browser. We start with a Bing Maps imager, add complex polygons (complete with transparent fill), save the finished image as a PNG, and send it to the browser.
The idea has come up that we could possibly install a graphics card and use DirectX or OpenGL to improve performance. I believe this would be the case even though we ultimately generate an image instead of sending the data the the screen. I believe our processes could still make use of the API and the hardware acceleration it provides. Our process is not unlike what CGI film makers do to render individuals frames of a film, though we simply render a single image and send it, as opposed to the hundreds of thousands of images needed for a single CGI film.
So my question is: would a powerful graphics card and use of DirectDraw or OpenGL provide us a worthwhile performance boost? It can take us 20-30 seconds to render a more complex map. Which is a long time to wait on a web page...
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Jan 15, 2012
I want to use "OpenGL" in my project. Is it possible to associate it with "Visual Basic" application developed in Visual Studio 2010? If yes then how can we do it.
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Feb 19, 2009
What is Environment.FailFast? How is it useful?
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Jan 9, 2009
We have a couple of applications at work that need a reference to the license server set in the User Variables under the Enviroment Variables on the windows xp client machines(system properties, Advanced, Enviroment Variables). The problem is that both applications needs a reference to the same variable name and you can't have two with the same name. What i intend to do is to create a simple windows application with a button for each application that deletes the variable item present, adds a new variable item with the value needed for that application to be able to run and then run the application itself. This is just a temporary fix until we get a more permanent solution. The 'GetEnvironmentVariable' class in vb is not able to add or delete a item, maybe the WIN32 API could do the job.
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Jul 15, 2009
i could make a 3d environment in VB.net which i could in the future make into a game environment or could i only do this with a language such as C++?
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Jun 24, 2009
Outside of the environment after running the setup program I can tell that the setup is failing miserably. The all important file "cakecreationdb.accdb" cannot be found. I have been beating my brains out against a brick wall on this one.
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May 8, 2010
I wanted to know if its possible to use VB.Net to create a USER Variable in the Environment Variables of the Operating System.
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Jan 19, 2012
I use Environment.NewLine, my colleagues use vbCrLf.When I'm doing a code review for them I want something that I can point to to say "use Environment.NewLine instead of vbCrLf"
Or, am I just peeing in the wind, and it doesn't really matter ?
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Feb 22, 2011
I am trying to change the way my aspx pages load when I double-click on them in my development environment. I wish for the markup to show instead of the design. So, I go into "Tools" -> "Options" -> "HTML Designer" and make my changes. However, I have to do this every time I get into VS. How do I make those changes stick?
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Oct 15, 2010
Is one able to compile VB 6 code in Visual Studio.NET ? In other words, is it backwards compatible with older VB code?Since I know there is a difference between managed code (.NET) and unmanaged code, I am wondering if Visual Studio.NET is able to compile unmanaged code as well?
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May 19, 2011
I've made a simple program that set environment variables like [code]...
If I close de command prompt then open it again, it's OK.
How can I refresh the environment variables in the command prompt I use my program?
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Jul 30, 2009
Ok, I am needing to capture the username of the user who is logged into a third party software (similar to citrix) which then will launch compiled vb.net applications from the 'Cloud'. If the user logs into their windows active directory machine as Smith123, and then logs into this third party software as SmithS, and launch a compiled program which runs on the remote server, and executes a button that displays the environment .username results, what will return? Smith123 or SmithS?
I am trying to figure this out, and I would just create a program and try it out myself but going through all of the hoops, bells and whistles of where I work just to get a simple compiled piece of code up on the server can be a pain sometimes..
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Aug 3, 2010
Environnent.NewLine seems to be resolving to two spaces " " (as are vbCrLf and ControlChars.CrLF). Using StringBuilder, AppendLine is doing the same.I've been racking my brain and searching the Internet trying to figure out why this the way it is, but am coming up empty.
I am trying to generate .bat file based on user interface decisions. I need to have separation between lines. I'm trying:
[Code]...
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