From 6f683a66582dd543b957216b466c07dc64d5b9a7 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Thu, 6 Aug 2026 16:15:00 +0200
Subject: feat(engine): add depth function to rendering::DrawProperties

---
 engine/src/rendering.rs | 40 +++++++++++++++++++++++++++++++++++++---
 1 file changed, 37 insertions(+), 3 deletions(-)

(limited to 'engine/src/rendering.rs')

diff --git a/engine/src/rendering.rs b/engine/src/rendering.rs
index dc3cb76..3af1ab8 100644
--- a/engine/src/rendering.rs
+++ b/engine/src/rendering.rs
@@ -321,6 +321,37 @@ impl Default for ScissorBox
     }
 }
 
+#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
+pub enum DepthFunction
+{
+    /// Never passes.
+    Never,
+
+    /// Passes if the incoming depth value is less than the stored depth value.
+    #[default]
+    Less,
+
+    /// Passes if the incoming depth value is equal to the stored depth value.
+    Equal,
+
+    /// Passes if the incoming depth value is less than or equal to the stored depth
+    /// value.
+    LessOrEqual,
+
+    /// Passes if the incoming depth value is greater than the stored depth value.
+    Greater,
+
+    /// Passes if the incoming depth value is not equal to the stored depth value.
+    NotEqual,
+
+    /// Passes if the incoming depth value is greater than or equal to the stored depth
+    /// value.
+    GreaterOrEqual,
+
+    /// Always passes.
+    Always,
+}
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 #[non_exhaustive]
 pub struct DrawProperties
@@ -329,6 +360,7 @@ pub struct DrawProperties
     pub blending_enabled: bool,
     pub blending_config: BlendingConfig,
     pub depth_test_enabled: bool,
+    pub depth_function: DepthFunction,
     pub scissor_test_enabled: bool,
     pub scissor_box: ScissorBox,
     pub face_culling_enabled: bool,
@@ -343,6 +375,7 @@ impl Default for DrawProperties
             blending_enabled: false,
             blending_config: BlendingConfig::default(),
             depth_test_enabled: true,
+            depth_function: DepthFunction::default(),
             scissor_test_enabled: false,
             scissor_box: ScissorBox::default(),
             face_culling_enabled: false,
@@ -358,9 +391,10 @@ bitflags! {
         const BLENDING_CONFIG = 1 << 1;
         const BLENDING_ENABLED = 1 << 2;
         const DEPTH_TEST_ENABLED = 1 << 3;
-        const SCISSOR_TEST_ENABLED = 1 << 4;
-        const SCISSOR_BOX = 1 << 5;
-        const FACE_CULLING_ENABLED = 1 << 6;
+        const DEPTH_FUNCTION = 1 << 4;
+        const SCISSOR_TEST_ENABLED = 1 << 5;
+        const SCISSOR_BOX = 1 << 6;
+        const FACE_CULLING_ENABLED = 1 << 7;
     }
 }
 
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