Initial pipeline abstraction

Source/Render/Pipeline/DepthBiasState.rs

@@ -0,0 +1,20 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Copy, Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
+pub struct DepthBiasState {
+    /// Constant depth biasing factor, in basic units of the depth format.
+    pub constant: i32,
+
+    /// Slope depth biasing factor.
+    pub slope_scale: f32,
+
+    /// Depth bias clamp value (absolute).
+    pub clamp: f32,
+}
+
+impl DepthBiasState {
+    /// Returns true if the depth biasing is enabled.
+    pub fn IsEnabled(&self) -> bool {
+        self.constant != 0 || self.slope_scale != 0.0
+    }
+}