From bd371f3a5b0ef248ae5cc16431f6495c064edb1f Mon Sep 17 00:00:00 2001
From: MoochMcGee <alegend45@gmail.com>
Date: Tue, 21 Jul 2015 19:50:27 -0500
Subject: [PATCH] Implement stencil action 2 in SW renderer

---
 src/video_core/pica.h         | 1 +
 src/video_core/rasterizer.cpp | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index aec6f0660..62f595339 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -431,6 +431,7 @@ struct Regs {
 
     enum class StencilAction : u32 {
         Keep = 0,
+        AndReverse = 2,
         Xor  = 5,
     };
 
diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp
index e2b90ad1c..572797b4e 100644
--- a/src/video_core/rasterizer.cpp
+++ b/src/video_core/rasterizer.cpp
@@ -221,6 +221,9 @@ static u8 PerformStencilAction(Regs::StencilAction action, u8 dest, u8 ref) {
     case Regs::StencilAction::Keep:
         return dest;
 
+    case Regs::StencilAction::AndReverse:
+        return dest & ~ref;
+
     case Regs::StencilAction::Xor:
         return dest ^ ref;