public override void Dispose()
{
Glx.glXMakeCurrent(display, visual, IntPtr.Zero);
Glx.glXDestroyContext(display, handle);
}
public override void CreateContext(IntPtr wnd_handle, IntPtr drawable, OpenGLContext share)
{
// Force loading of OpenGL library
// This is later used by the OpenGL class to implement extensions.
//linker = GetLinker();
display = API.OpenDisplay(IntPtr.Zero);
if (display == IntPtr.Zero)
{
throw new InvalidOperationException("Cannot connect to X server");
}
wnd = wnd_handle;
int[] attr =
{
Glx.GLX_X_RENDERABLE, 1,
Glx.GLX_DRAWABLE_TYPE, Glx.GLX_WINDOW_BIT,
Glx.GLX_RENDER_TYPE, Glx.GLX_RGBA_BIT,
Glx.GLX_X_VISUAL_TYPE, Glx.GLX_TRUE_COLOR,
Glx.GLX_RED_SIZE, 8,
Glx.GLX_GREEN_SIZE, 8,
Glx.GLX_BLUE_SIZE, 8,
Glx.GLX_ALPHA_SIZE, 0,
Glx.GLX_DEPTH_SIZE, 16,
//Glx.GLX_STENCIL_SIZE , 8,
Glx.GLX_DOUBLEBUFFER, 1,
0, 0
};
API.MapWindow(display, wnd);
int def_screen = API.DefaultScreen(display);
Console.WriteLine("Display: 0x" + display.ToString("x"));
Console.WriteLine("Deault screen: 0x" + def_screen.ToString("x"));
int[] elems = new int[] { 0 };
//IntPtr fb = Glx.glXChooseFBConfig(display, def_screen, attr, elems);
//if (fb == IntPtr.Zero)
//throw new InvalidOperationException("Could not retrieve framebuffer configuration");
Console.WriteLine(elems[0]);
//var info_ptr = Glx.glXGetVisualFromFBConfig(display, Marshal.ReadIntPtr(fb));
attr = new int[] { GLX_RGBA, GLX_DEPTH_SIZE, 32, GLX_DOUBLEBUFFER, 0 };
//IntPtr info_ptr = Glx.glXChooseVisual(display, def_screen, attr);
var info_ptr = API.DefaultVisual(display, def_screen);
if (info_ptr == IntPtr.Zero)
{
throw new NotSupportedException("OpenGL is not supported.");
}
VisualInfo info = new VisualInfo();
Marshal.PtrToStructure(info_ptr, info);
visual = info_ptr;
handle = Glx.glXCreateContext(display, visual, IntPtr.Zero, true);
if (handle == IntPtr.Zero)
{
throw new InvalidOperationException("Unable to create OpenGL context");
}
Glx.glXMakeCurrent(display, visual, handle);
int[] parameters = new int[]
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 2,
0
};
glXCreateContextAttribsARB = GetProc <XCreateContextAttribsARBProc>("glXCreateContextAttribsARB");
if (glXCreateContextAttribsARB == null)
{
throw new NotSupportedException("OpenGL 3.0 not supported.");
}
IntPtr new_handle = glXCreateContextAttribsARB(display, info_ptr, share.Handle, true, parameters);
if (new_handle == IntPtr.Zero)
{
throw new NotSupportedException("OpenGL 3.0 not supported.");
}
Glx.glXMakeCurrent(display, visual, IntPtr.Zero);
Glx.glXDestroyContext(display, handle);
Glx.glXMakeCurrent(display, visual, new_handle);
handle = new_handle;
Console.WriteLine("glX Initialization succeded.");
}
