/// <summary>
/// Sets up and initializes OpenGL ES
/// </summary>
void SetupGL()
{
// Setup the Rendering Context...
Context = new EAGLContext(EAGLRenderingAPI.OpenGLES2);
if (Context == null)
{
Console.WriteLine("Failed to create ES context");
}
// Initialize the Renderer...
Renderer = new ES2Renderer();
// Initialize the View...
View.Context = Context;
View.EnableSetNeedsDisplay = true;
View.ClearsContextBeforeDrawing = false;
View.DrawableDepthFormat = GLKViewDrawableDepthFormat.Format24;
View.DrawableMultisample = GLKViewDrawableMultisample.None;
View.DrawInRect += Draw;
EAGLContext.SetCurrentContext(Context);
GL.ClearDepth(0.0f);
GL.DepthRange(0.0f, 1.0f);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Equal);
GL.DepthMask(true);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.Disable(EnableCap.Dither);
GL.Disable(EnableCap.CullFace);
}
/// <summary>
/// Tell opengl that we want to use OpenGL ES2 capabilities.
/// This must be done right before the frame buffer is created.
/// </summary>
InitializationState InitializeOpenGL()
{
if (m_initialized == InitializationState.Uninitialized)
{
Renderer = new ES2Renderer();
Renderer.AndroidContext = App.Manager.ApplicationContext;
// Initialize and setup some start states...
m_initialized = InitializationState.Initialized;
GL.ClearDepth(0.0f);
GL.DepthRange(0.0f, 1.0f);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Equal);
GL.DepthMask(true);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.Disable(EnableCap.Dither);
GL.Disable(EnableCap.CullFace);
}
return(m_initialized);
}
