[Csgl-users] OpenGL and C# too slow

[Rapthor <ra...@ly...>]

Hello,

I'm frustrated ... I am using CsGL with Visual Studio Express C# and it =
renders poorly. The performance on a 2 GHz system is not worth it. Am I =
doing something wrong? I am rendering some very simple terrain with few =
polygons. A similar example runs at more than 30 fps in JAVA with JOGL.

Here is the C# code for my glDraw()-method:


public override void glDraw()

{

    processKeys();

    calcCamera();

    nowTime =3D Environment.TickCount;

    totalTime =3D nowTime - lastTime;

    lastTime =3D nowTime;

    if (totalTime =3D=3D 0)

        fps =3D 25;

    else

        fps =3D (float) Math.Round(1.0f / ((float)totalTime/1000f), 0, =
MidpointRounding.AwayFromZero);

    GL.glLoadIdentity(); // Reset The Current Modelview Matrix=20

    GL.gluLookAt(camPosition[0], camPosition[1], camPosition[2],

    camPosition[0] + camDirection[0], camPosition[1] + camDirection[1], =
camPosition[2] + camDirection[2],

    camUpVector[0], camUpVector[1], camUpVector[2]);

    GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT); // =
Clear The Screen And The Depth Buffer



    GL.glEnable(GL.GL_NORMALIZE);

    GL.glBegin(GL.GL_TRIANGLES);

    // length of the array is about 9000

    for (int i =3D 0; i < indexArray.Length; i++)

    {

        GL.glNormal3f(normals[i / 3].X, normals[i / 3].Y, normals[i / =
3].Z);

        GL.glVertex3f(pointArray[indexArray[i]].X,    =
pointArray[indexArray[i]].Y,    pointArray[indexArray[i]].Z);

    }

    GL.glEnd();


    GL.glFlush();

    this.SwapBuffer(); // swap Buffers

}


I'm using static methods from GL all the time. I hope it's ok to do so.

Can anybody please help me? Have you some experience how to speed up =
applications in C#?

I am using a BackgroundWorkerThread to render continously:

 ...

bgw =3D new BackgroundWorker();

this.bgw.RunWorkerCompleted +=3D new =
System.ComponentModel.RunWorkerCompletedEventHandler(this.bgw_RunWorkerCo=
mpleted);

this.bgw.RunWorkerAsync();

 ....



private void bgw_RunWorkerCompleted(object sender, =
RunWorkerCompletedEventArgs e)

{

    while (!this.Disposing)

    {

        view.Refresh();

        //view.glDraw();

        Application.DoEvents();

    }

}