From 5a174dfab4ae0852cb96df5f48bae474949cc017 Mon Sep 17 00:00:00 2001
From: kaizhangNV <149626564+kaizhangNV@users.noreply.github.com>
Date: Mon, 8 Jul 2024 21:34:51 -0700
Subject: Fix the issue in emitFloatCast (#4559)

* Fix the issue in emitFloatCast

In emitFloatCast function, we only considered the input type
is float scalar or float vector, so if the input type is a float
matrix type, it will crash.

We should also handle the float matrix type.

Also, we add some diagnose info to point out the source location
where there is error happened, so in the future it's easier to tell
us what happens.

* Add a unit test

* Disable the test for metal

Metal doesn't support 'double'.
"
metal 32023.35: /tmp/unknown-YgHAsJ.metal(15): error :  'double' is not supported in Metal
    matrix<double,int(3),int(4)>  b_0 = matrix<double,int(3),int(4)> (a_0);
"
---
 source/slang/slang-ir-util.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'source/slang/slang-ir-util.cpp')

diff --git a/source/slang/slang-ir-util.cpp b/source/slang/slang-ir-util.cpp
index 10c7bfea6..8294cd533 100644
--- a/source/slang/slang-ir-util.cpp
+++ b/source/slang/slang-ir-util.cpp
@@ -23,6 +23,13 @@ IRType* getVectorElementType(IRType* type)
     return type;
 }
 
+IRType* getMatrixElementType(IRType* type)
+{
+    if (auto matrixType = as<IRMatrixType>(type))
+        return matrixType->getElementType();
+    return type;
+}
+
 Dictionary<IRInst*, IRInst*> buildInterfaceRequirementDict(IRInterfaceType* interfaceType)
 {
     Dictionary<IRInst*, IRInst*> result;
-- 
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