private void MainDxViewportViewOnDxSceneDeviceCreated(object sender, EventArgs e)
{
// Create a SolidColorEffect that will be used to render each objects with a color from object's id
_solidColorEffect = new SolidColorEffect();
_solidColorEffect.OverrideModelColor = true; // We will overwrite the object's color with color specified in SolidColorEffect.Color
_disposables.Add(_solidColorEffect);
MainDXViewportView.DXScene.DXDevice.EffectsManager.RegisterEffect(_solidColorEffect);
// Create a custom rendering step that will be used instead of standard rendering step
_objectIdRenderingStep = new CustomActionRenderingStep("ObjectIdRenderingStep")
{
CustomAction = ObjectIdRenderingAction,
IsEnabled = false
};
MainDXViewportView.DXScene.RenderingSteps.AddAfter(MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep, _objectIdRenderingStep);
// In this sample we render Object ids to a custom bitmap,
// so for standard rendering, we disable our custom rendering.
// But if you went you can enable it and disabled the standard rendering - this will always render objects ids:
//_objectIdRenderingStep.IsEnabled = true;
//MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep.IsEnabled = false;
}
public CustomRenderingStep1()
{
InitializeComponent();
MainDXViewportView.DXSceneInitialized += delegate(object sender, EventArgs args)
{
if (MainDXViewportView.DXScene == null) // When DXEngine falls back to WPF 3D rendering, the DXScene is null; we could also check for MainDXViewportView.UsedGraphicsProfile.DriverType != GraphicsProfile.DriverTypes.Wpf3D
{
return;
}
InitializeSharpDXRendering(MainDXViewportView.DXScene);
var customActionRenderingStep = new CustomActionRenderingStep("Custom DXScene rendering step");
customActionRenderingStep.CustomAction = SharpDXRenderingAction;
MainDXViewportView.DXScene.RenderingSteps.AddBefore(MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep, customActionRenderingStep);
};
CompositionTarget.Rendering += OnCompositionTargetOnRendering;
this.Unloaded += delegate { Dispose(); };
}
private void OnDxSceneDeviceCreated(object sender, EventArgs e)
{
//
// !!! IMPORTANT !!!
//
// Some rendering queues are being sorted by material.
// This improves performance by rendering objects with similar material one after another and
// this reduces number of DirectX state changes.
// But when using ObjectId map, we need to disable rendering queues by material.
// If this is not done, the objects rendered in the standard rendering pass and
// objects rendered for object id map will be rendered in different order.
// Because of this we would not be able to get the original object id from the back.
//
// Therefore go through all MaterialSortedRenderingQueue and disable sorting.
//
// Note the we do not need to disable sorting by camera distance (TransparentRenderingQueue)
// because the object order does not change when rendering object id map.
foreach (var materialSortedRenderingQueue in MainDXViewportView.DXScene.RenderingQueues.OfType <MaterialSortedRenderingQueue>())
{
materialSortedRenderingQueue.IsSortingEnabled = false;
}
// Create a SolidColorEffect that will be used to render each objects with a color from object's id
_solidColorEffect = new SolidColorEffect
{
// We will overwrite the object's color with color specified in SolidColorEffect.Color
OverrideModelColor = true,
// Always use Opaque blend state even if alpha is less then 1 (usually PremultipliedAlphaBlend is used in this case).
// This will allow us to also use alpha component for the object id (in our case RenderingQueue id)
OverrideBlendState = MainDXViewportView.DXScene.DXDevice.CommonStates.Opaque,
// By default for alpha values less then 1, the color components are multiplied with alpha value to produce pre-multiplied colors.
// This will allow us to also use alpha component for the object id (in our case RenderingQueue id)
PremultiplyAlphaColors = false
};
_disposables.Add(_solidColorEffect);
MainDXViewportView.DXScene.DXDevice.EffectsManager.RegisterEffect(_solidColorEffect);
// Create a custom rendering step that will be used instead of standard rendering step.
// It will be used in the CreateObjectIdBitmapButton_OnClick method below
_objectIdRenderingStep = new CustomActionRenderingStep("ObjectIdRenderingStep")
{
CustomAction = ObjectIdRenderingAction,
IsEnabled = false // IMPORTANT: disable this custom rendering step - it will be enabled when rendering to bitmap
};
MainDXViewportView.DXScene.RenderingSteps.AddAfter(MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep, _objectIdRenderingStep);
// In this sample we render Object ids to a custom bitmap,
// so for standard rendering, we disable our custom rendering.
// But if you went you can enable it and disabled the standard rendering - this will always render objects ids:
//
//_objectIdRenderingStep.IsEnabled = true;
//MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep.IsEnabled = false;
}
