/// <summary>
///
/// </summary>
public void InitializeExtensions()
{
if (extensionList == null)
{
GlExtensionLoader.LoadAllExtensions();
// get the OpenGL version string and vendor name
glVersion = Marshal.PtrToStringAnsi(Gl.glGetString(Gl.GL_VERSION));
videoCard = Marshal.PtrToStringAnsi(Gl.glGetString(Gl.GL_RENDERER));
vendor = Marshal.PtrToStringAnsi(Gl.glGetString(Gl.GL_VENDOR));
// parse out the first piece of the vendor string if there are spaces in it
if (vendor.IndexOf(" ") != -1)
{
vendor = vendor.Substring(0, vendor.IndexOf(" "));
}
// create a new extension list
extensionList = new StringCollection();
string allExt = Marshal.PtrToStringAnsi(Gl.glGetString(Gl.GL_EXTENSIONS));
string[] splitExt = allExt.Split(Char.Parse(" "));
// store the parsed extension list
for (int i = 0; i < splitExt.Length; i++)
{
extensionList.Add(splitExt[i]);
}
}
}
public virtual void ExposeEvent(object sender, ExposeEventArgs args)
{
view.Glx.MakeCurrent(view.GdkWindow);
Gl.glEnable(Gl.GL_CONVOLUTION_2D);
Gdk.Color c = view.Style.Background(view.State);
Gl.glClearColor(c.Red / (float)ushort.MaxValue,
c.Blue / (float)ushort.MaxValue,
c.Green / (float)ushort.MaxValue,
1.0f);
if (texture == null)
{
float [] kernel = new float [] { .25f, .5f, .25f,
.5f, 1f, .5f,
.25f, .5f, .25f };
#if false
bool supported = GlExtensionLoader.LoadExtension("GL_ARB_imaging");
if (!supported)
{
System.Console.WriteLine("GL_ARB_imaging not supported");
return;
}
#else
GlExtensionLoader.LoadAllExtensions();
#endif
Gl.glConvolutionParameteri(Gl.GL_CONVOLUTION_2D,
Gl.GL_CONVOLUTION_BORDER_MODE,
Gl.GL_REPLICATE_BORDER);
Gl.glConvolutionFilter2D(Gl.GL_CONVOLUTION_2D,
Gl.GL_INTENSITY,
3,
3,
Gl.GL_INTENSITY,
Gl.GL_FLOAT,
kernel);
texture = new Texture(view.CompletePixbuf());
}
Gl.glShadeModel(Gl.GL_FLAT);
Gl.glColor3f(1.0f, 1.0f, 1.0f);
Gl.glEnable(Gl.GL_DEPTH_TEST);
Gl.glEnable(Gl.GL_NORMALIZE);
Gl.glShadeModel(Gl.GL_FLAT);
Gl.glEnable(Gl.GL_TEXTURE_RECTANGLE_ARB);
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
transition.Draw(view.Allocation, texture, texture);
view.Glx.SwapBuffers(view.GdkWindow);
args.RetVal = true;
Gl.glDisable(Gl.GL_CONVOLUTION_2D);
}