Hi guys,

actually i try to get an OpenGL 3+ context to work. I ve downloaded the tutorials from swiftless and compiled them. Compilation worked fine but all i got to see is a white screen. I figured out, that it seems to be a problem with the creation of the new context:

The following Code is from swiftless. I didn't change anything, just deleted the comments in this post:

	int attributes[] = {
		WGL_CONTEXT_MAJOR_VERSION_ARB, 3, 
		WGL_CONTEXT_MINOR_VERSION_ARB, 2, 
	        WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, 
		0
	};

	if (wglewIsSupported("WGL_ARB_create_context") == 1) { 
		hrc = wglCreateContextAttribsARB(hdc, NULL, attributes); 
		wglMakeCurrent(NULL, NULL); 
		wglDeleteContext(tempOpenGLContext); 
		wglMakeCurrent(hdc, hrc); 
	}
	else {
		hrc = tempOpenGLContext; 
	}

	const GLubyte *glVersionString = glGetString(GL_VERSION); 
	int glVersion[2] = {-1, -1}; 
	glGetIntegerv(GL_MAJOR_VERSION, &glVersion[0]); 
	glGetIntegerv(GL_MINOR_VERSION, &glVersion[1]); 

If I set a holding point in Visual Studio10 I can read the version Numbers contained in glVersion. It says -1,-1. I guess that means the context creation has failed, but why? I also get the Version Number of the temporary context. Its 3.0. I exspected 2.0. If I am using the temporary context, everything works fine, i can render objects the old way, but the new context shows just a blank white screen. When resizing the window to a larger size, the new areas are black, the old still white.

I ve Got a Nvidea GeForce 540M. Actual drivers are installed. As mentioned I am using VS2010 with GLEW 1.9.

Hope you can help me getting this to work.

Der Troll

PS: Sorry for my bad english...

After trying a few things I am now able to give you some more information after Updating to VS2012.

First I tried another Tutorial Program which uses FreeGLUT. Now what happens is, that it only works, if i tell glut to crate an OpenGl 3.0 Context. Then I restarted the swiftless Tutorial and tried some Version Numbers. Only if I tell him to build a 3.0 version the program shows the selected backgroundcolor. As I mentioned before, 3.0 is the version of the context when I am initializing OpenGL "the old way".

So here are my suggestions:

- maybe the glew version isnt correct fpr my setup

- maybe the graphic drivers are incompatible

- maybe the VS2012 Settings are wrong

You see, there are a lot of maybe's. I really dont know what's the Problem. I ll try some other glew builds. If that doesnt work, i ll search for other display drivers...

Hope someone knows the solution, i m getting mad...

Thx for the hint with the extension viewer and it seems you re 100% right. It says:

3.0 100%

3.1 37%

rest 0%

I ve got the driver from the nvidea homepage and the discription said its Open-GL 4.3 compatible :/ So i ve to try some other drivers, but I don't know where to find them... I ll Check my Card and Driver specifications again to be sure its really 4.3 compatible... I ll also try to reinstall the drivers in advanced mode. Maybe you ve another hint what to do while i am searching for other drivers?

Thx by the way. Now I know what exactly is the problem, just have to find a solution.

I ve got the solution... finally...

I used the OpenGL extensions viewer and clicked on the "search Update" Button. It directed me to the Intel Site... didn't think about that (and the big Intel Logo in the Extention Viewer)... searched for new drivers, found them and was able to get to OpenGl 3.1. Somehow I realized, that the drivers are for my onboard-Graphics... I started the NVidea Center and forced it to use the Graphic Accellerator on the OpenGL extensions viewer. Restarted the Program and I got what i wanted... OpenGL 4.3. Repeated that on Visual Studio and compiled my Project... and it worked!!!

So somehow there must be Setting in my System that tells the Computer to use onboard-Graphics instead of the Nvidea Chipset... -.- Problem is now solved, but if somebody knows where to find this Setting to kick it out of my System configuration... that would be nice

Special Thanks to mhagain... without the OpenGL extensions viewer I wouldn t have been able to get this far. Thanks a lot!!!

thx a lot...

at the moment i try to get out of this Program:

1. while (stupid == true)
2. {
3. Hit_Table(&Head);
4. }