From d798d1328ea8e29cceb0e86cf9f8e7ba5835c0fd Mon Sep 17 00:00:00 2001
From: redstrate <54911369+redstrate@users.noreply.github.com>
Date: Tue, 18 Aug 2020 00:45:56 -0400
Subject: [PATCH] Add support for greater depth function

---
 engine/gfx/metal/src/gfx_metal.mm | 12 +++++++++++-
 engine/gfx/public/gfx.hpp         |  3 ++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/engine/gfx/metal/src/gfx_metal.mm b/engine/gfx/metal/src/gfx_metal.mm
index 0ff86cc..0eb84ea 100755
--- a/engine/gfx/metal/src/gfx_metal.mm
+++ b/engine/gfx/metal/src/gfx_metal.mm
@@ -598,7 +598,17 @@ GFXPipeline* GFXMetal::create_graphics_pipeline(const GFXGraphicsPipelineCreateI
     MTLDepthStencilDescriptor* depthStencil = [MTLDepthStencilDescriptor new];
 
     if(info.depth.depth_mode != GFXDepthMode::None) {
-        depthStencil.depthCompareFunction = info.depth.depth_mode == GFXDepthMode::LessOrEqual ? MTLCompareFunctionLessEqual : MTLCompareFunctionLess;
+        switch(info.depth.depth_mode) {
+            case GFXDepthMode::Less:
+                depthStencil.depthCompareFunction = MTLCompareFunctionLess;
+                break;
+            case GFXDepthMode::LessOrEqual:
+                depthStencil.depthCompareFunction = MTLCompareFunctionLessEqual;
+                break;
+            case GFXDepthMode::Greater:
+                depthStencil.depthCompareFunction = MTLCompareFunctionGreater;
+                break;
+        }
         depthStencil.depthWriteEnabled = true;
     }
 
diff --git a/engine/gfx/public/gfx.hpp b/engine/gfx/public/gfx.hpp
index 24fc018..bc17e8f 100755
--- a/engine/gfx/public/gfx.hpp
+++ b/engine/gfx/public/gfx.hpp
@@ -106,7 +106,8 @@ struct GFXVertexAttribute {
 enum class GFXDepthMode {
     None,
     Less,
-    LessOrEqual
+    LessOrEqual,
+    Greater
 };
 
 struct GFXPushConstant {