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RenderStateManager.SlopeScaleDepthBias Property (Microsoft.DirectX.Direct3D)

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Retrieves or sets a value used to determine how much bias can be applied to coplanar primitives to reduce z-fighting.

Definition

Visual Basic Public Property SlopeScaleDepthBias As Single
C# public float SlopeScaleDepthBias { get; set; }
C++ public:
property float SlopeScaleDepthBias {
        float get();
        void set(float value);
}
JScript public function get SlopeScaleDepthBias() : float
public function set SlopeScaleDepthBias(float);

Property Value

System.Single
Floating-point value that specifies the slope scale bias to apply.

This property is read/write. 

Remarks

The default value is 0.

Polygons that are coplanar in your 3-D space can be made to appear as if they are not coplanar by adding a z-bias to each one. An application can help ensure that coplanar polygons are rendered properly by adding a bias to the z-values that the system uses when rendering sets of coplanar polygons.

The following formula shows how to calculate the bias to be applied to coplanar primitives.

bias = (m * SlopeScaleDepthBias) + DepthBias

where m is the maximum depth slope of the triangle being rendered, defined as:

m = max(abs(delta z / delta x), abs(delta z / delta y))

See Also