private void OnConfigure(object o, ConfigureEventArgs args)
{
if (!MakeCurrent())
{
LogManager.Log(LogLevel.Warning, "MakeCurrent() - OnConfigure failed");
return;
}
GlUtil.ContextValid = true;
// setup opengl state and transform
gl.Disable(gl.DEPTH_TEST);
gl.Disable(gl.CULL_FACE);
gl.Enable(gl.TEXTURE_2D);
gl.Enable(gl.BLEND);
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.ClearColor(0f, 0f, 0f, 0f);
gl.Viewport(0, 0, Allocation.Width, Allocation.Height);
gl.MatrixMode(gl.PROJECTION);
gl.LoadIdentity();
gl.Ortho(0, Allocation.Width, Allocation.Height, 0,
-1.0f, 1.0f);
gl.MatrixMode(gl.MODELVIEW);
gl.LoadIdentity();
GlUtil.Assert("After setting opengl transforms");
GlUtil.ContextValid = false;
}
private void OnExposed(object o, ExposeEventArgs args)
{
if (!MakeCurrent())
{
LogManager.Log(LogLevel.Warning, "Make Current - OnExposed failed");
return;
}
GlUtil.ContextValid = true;
gl.MatrixMode(gl.MODELVIEW);
gl.LoadIdentity();
gl.Scalef(Zoom, Zoom, 1f);
gl.Translatef(Translation.X, Translation.Y, 0f);
DrawGl();
GlUtil.Assert("After Drawing");
SwapBuffers();
GlUtil.ContextValid = false;
}