From a443350a6bb344ccda46c35ebad5a7cf1a7b262d Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 25 Jul 2024 09:45:56 -0700
Subject: Allow implicitly casting enum types to bool. (#4739)

* Allow implicitly casting enum types to bool.

* Fix.
---
 source/slang/core.meta.slang | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'source')

diff --git a/source/slang/core.meta.slang b/source/slang/core.meta.slang
index 2da0fa523..45b3435eb 100644
--- a/source/slang/core.meta.slang
+++ b/source/slang/core.meta.slang
@@ -751,6 +751,14 @@ extension bool : IRangedValue
     __intrinsic_op($(kIROp_CastPtrToBool))
     __init(Ptr<T> ptr);
 
+    __generic<T : __EnumType>
+    __implicit_conversion($(kConversionCost_IntegerTruncate))
+    [__unsafeForceInlineEarly]
+    __init(T v)
+    {
+        return __slang_noop_cast<T.__Tag>(v) != __intCast<T.__Tag>(0);
+    }
+
     static const bool maxValue = true;
     static const bool minValue = false;
 }
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