/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnPaint(PaintEventArgs e)
{
GLRenderContext renderContext = this.renderContext;
if (renderContext == null)
{
base.OnPaint(e);
return;
}
stopWatch.Reset();
stopWatch.Start();
// Make sure it's our instance of openSharpGL that's active.
renderContext.MakeCurrent();
if (this.designMode)
{
try
{
GL.Instance.ClearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
GL.Instance.Clear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT | GL.GL_STENCIL_BUFFER_BIT);
//this.assist.Render(this.RenderTrigger == RenderTrigger.TimerBased, this.Height, this.FPS, this);
}
catch (Exception)
{
}
}
else
{
// If there is a draw handler, then call it.
DoOpenGLDraw(e);
}
// Blit our offscreen bitmap.
Graphics graphics = e.Graphics;
IntPtr deviceContext = graphics.GetHdc();
renderContext.Blit(deviceContext);
graphics.ReleaseHdc(deviceContext);
stopWatch.Stop();
{
GL gl = GL.Instance;
if (gl != null)
{
ErrorCode error = (ErrorCode)gl.GetError();
if (error != ErrorCode.NoError)
{
string str = string.Format("{0}: OpenGL error: {1}", this.GetType().FullName, error);
Debug.WriteLine(str);
Log.Write(str);
}
}
}
this.FPS = 1000.0 / stopWatch.Elapsed.TotalMilliseconds;
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
int width = this.Width, height = this.Height;
if (width > 0 && height > 0)
{
CSharpGL.GLRenderContext renderContext = this.renderContext;
if (renderContext != null)
{
renderContext.MakeCurrent();
renderContext.SetDimensions(width, height);
GL.Instance.Viewport(0, 0, width, height);
if (this.designMode)
{
//this.assist.Resize(width, height);
}
else
{
Bitmap bmp = this.bitmap;
this.bitmap = new Bitmap(width, height);
if (bmp != null)
{
bmp.Dispose();
}
}
this.Invalidate();
}
}
}
/// <summary>
/// Make render context in this Canvas the current one in the thread.
/// </summary>
public void MakeCurrent()
{
GLRenderContext renderContext = this.renderContext;
if (renderContext != null)
{
renderContext.MakeCurrent();
}
}
