Added DepthStencilState

GlitchyEngine/src/Renderer/DepthStencilState.bf

@@ -0,0 +1,93 @@
+using GlitchyEngine.Core;
+
+namespace GlitchyEngine.Renderer
+{
+	/// The stencil operations that can be performed during depth-stencil testing.
+	public enum StencilOperation : uint32
+	{
+		/// Keep the existing stencil data.
+		Keep = 1,
+		/// Set the stencil data to 0.
+		Zero= 2,
+		/// Set the stencil data to the reference value set by calling ID3D11DeviceContext::OMSetDepthStencilState.
+		Replace = 3,
+		/// Increment the stencil value by 1, and clamp the result. 
+		IncrementAndClamp = 4,
+		/// Decrement the stencil value by 1, and clamp the result.
+		DecrementAndClamp = 5,
+		/// Invert the stencil data.
+		Invert = 6,
+		/// Increment the stencil value by 1, and wrap the result if necessary. 
+		Increment = 7,
+		/// Decrement the stencil value by 1, and wrap the result if necessary.
+		Decrement = 8
+	}
+
+	public struct DepthStencilOperationDescription
+	{
+		/// The stencil operation to perform when stencil testing fails.
+		public StencilOperation StencilFailOperation = .Keep;
+		
+		/// The stencil operation to perform when stencil testing passes and depth testing fails.
+		public StencilOperation StencilDepthFailOperation = .Keep;
+
+		/// The stencil operation to perform when stencil testing and depth testing both pass.
+		public StencilOperation StencilPassOperation = .Keep;
+
+		/// A function that compares stencil data against existing stencil data.
+		public ComparisonFunction StencilFunction = .Always;
+
+		public this(StencilOperation stencilFailOperation = .Keep, StencilOperation stencilDepthFailOperation = .Keep,
+			StencilOperation stencilPassOperation = .Keep, ComparisonFunction stencilFunction = .Always)
+		{
+			StencilFunction = stencilFunction;
+		}
+
+		public const Self Default = Self();
+	}
+
+	public struct DepthStencilStateDescription
+	{
+		/// True if depth testing is enabled.
+		public bool DepthEnabled = true;
+
+		/// If true writing to the depth-stencil buffer is enabled.
+		public bool WriteDepth = true;
+
+		/// The function that is used to compare depth data against the existing depth data.
+		public ComparisonFunction DepthFunction = .Less;
+
+		/// True if stencil testing is enabled.
+		public bool StencilEnabled = false;
+
+		public uint8 StencilReadMask = 255;
+		public uint8 StencilWriteMask = 255;
+
+		public DepthStencilOperationDescription FrontFace = .();
+		public DepthStencilOperationDescription BackFace = .();
+
+		public this(bool depthEnabled = true, bool writeDepth = true, ComparisonFunction depthFunction = .Less,
+			bool stencilEnabled = false, uint8 stencilReadMask = 255, uint8 stencilWriteMask = 255,
+			DepthStencilOperationDescription frontFace = .(),
+			DepthStencilOperationDescription backFace = .())
+		{
+			DepthEnabled = depthEnabled;
+			WriteDepth = writeDepth;
+			DepthFunction = depthFunction;
+			StencilEnabled = stencilEnabled;
+			StencilReadMask = stencilReadMask;
+			StencilWriteMask = stencilWriteMask;
+			FrontFace = frontFace;
+			BackFace = backFace;
+		}
+
+		public const DepthStencilStateDescription Default = Self();
+	}
+
+	class DepthStencilState : RefCounter
+	{
+		public DepthStencilStateDescription _description;
+
+		public extern this(DepthStencilStateDescription description);
+	}
+}