// This begins a drawing session
public bool StartRendering(bool clear, Color4 backcolor, Surface target, Surface depthbuffer)
{
// Check if we can render
if (CheckAvailability() && !isrendering) //mxd. Added isrendering check
{
// Set rendertarget
device.DepthStencilSurface = depthbuffer;
device.SetRenderTarget(0, target);
// Clear the screen
if (clear)
{
if (depthbuffer != null)
{
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, backcolor, 1f, 0);
}
else
{
device.Clear(ClearFlags.Target, backcolor, 1f, 0);
}
}
// Ready to render
// [ZZ] Sometimes (apparently during massive lag) this may cause invalid call exception.
// Let's put this code here until proper fix is available.
// For now, eat the initial exception and try to recover.
for (int i = 0; i < 2; i++)
{
try
{
device.BeginScene();
break;
}
catch (SlimDXException e)
{
if (i != 0)
{
throw e;
}
else
{
if (!CheckAvailability())
{
isrendering = false;
return(false);
}
Reset();
}
}
}
isrendering = true; //mxd
return(true);
}
else
{
// Minimized, you cannot see anything
isrendering = false; //mxd
return(false);
}
}