From c560bf99c273e21f53387635515a08f5d50b8583 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Tue, 18 May 2021 21:04:27 -0300
Subject: glasm: Implement gl_FrongFacing attribute

---
 src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
index 0b6d853eb..8c5cd286d 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
@@ -71,6 +71,9 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
     case IR::Attribute::VertexId:
         ctx.Add("MOV.S {}.x,{}.id;", inst, ctx.stage_name);
         break;
+    case IR::Attribute::FrontFace:
+        ctx.Add("CMP.S {}.x,{}.facing.x,0,-1;", inst, ctx.stage_name);
+        break;
     default:
         throw NotImplementedException("Get attribute {}", attr);
     }
-- 
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