protected virtual void OnBeforeDeviceCreation( DXCreateParametersEventArgs e )
{
if( BeforeDeviceCreation != null )
BeforeDeviceCreation( this, e );
}
private void CreateDevice()
{
if( Site != null && Site.DesignMode )
//don't unduly slow down the winforms designer
return;
if( !enable3D )
return;
if( ClientSize.Width == 0 ||
ClientSize.Height == 0 )
return;
if( !IsHandleCreated )
return;
try
{
int adapter = SelectAdapter();
Format adapterFormat = Manager.Adapters[adapter].CurrentDisplayMode.Format;
PresentParameters pp = CreatePresentParameters( adapter, adapterFormat );
DXCreateParametersEventArgs evArgs = new DXCreateParametersEventArgs( adapter, DeviceType.Hardware, adapterFormat, pp );
OnBeforeDeviceCreation( evArgs );
if( evArgs.CancelCreation )
return;
Device.IsUsingEventHandlers = false; //wheee! a global control flag! WHY MICROSOFT WHY?!
device = new Device( adapter, DeviceType.Hardware, this,
CreateFlags.HardwareVertexProcessing | CreateFlags.FpuPreserve, pp );
devicePresentParams = (PresentParameters)pp.Clone();
isLost = false;
}
catch( Exception e )
{
Text = string.Format( "Failed to create a device:\n{0}", e.Message );
device = null;
isLost = true;
}
if( device != null )
{
try
{
OnDeviceCreated( EventArgs.Empty );
}
catch
{
try
{
OnDeviceDestroyed( EventArgs.Empty );
}
finally
{
Helpers.DisposeAndClear( ref device );
isLost = true;
}
throw;
}
try
{
OnDeviceReset( EventArgs.Empty );
}
catch
{
try
{
OnDeviceLost( EventArgs.Empty );
OnDeviceDestroyed( EventArgs.Empty );
}
finally
{
Helpers.DisposeAndClear( ref device );
isLost = true;
}
throw;
}
}
Invalidate();
}
private void pn3D_BeforeDeviceCreation( object sender, DXCreateParametersEventArgs e )
{
bool good = true;
try
{
if( e.Caps.VertexShaderVersion < new Version( 2, 0 ) )
{
good = false;
return;
}
if( e.Caps.PixelShaderVersion < new Version( 2, 0 ) )
{
good = false;
return;
}
if( !Manager.CheckDeviceFormat( e.AdapterOrdinal, e.DeviceType,
e.DeviceFormat, Usage.RenderTarget, ResourceType.Textures,
Format.A32B32G32R32F ) )
{
good = false;
return;
}
}
finally
{
if( !good )
{
pn3D.Text = "The 3D card connected to this monitor does not support the necessary render target format.";
e.CancelCreation = true;
}
}
}
