From eaaa86fae4d02ba4163c904367cd5f96fda43865 Mon Sep 17 00:00:00 2001
From: Jay Kwak <82421531+jkwak-work@users.noreply.github.com>
Date: Mon, 2 Jun 2025 14:00:26 -0700
Subject: Use MatrixResultSignedComponents on OpCooperativeVectorMatrixMulNV
 (#7227)

---
 source/slang/hlsl.meta.slang | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

(limited to 'source')

diff --git a/source/slang/hlsl.meta.slang b/source/slang/hlsl.meta.slang
index 73e69fdf3..6a3ae63ec 100644
--- a/source/slang/hlsl.meta.slang
+++ b/source/slang/hlsl.meta.slang
@@ -26372,9 +26372,14 @@ CoopVec<T, M> coopVecMatMulPacked(
         let inputInterpretationSpirv : int32_t = __getSpvCoopVecComponentType(inputInterpretation);
         let memoryLayoutSpirv : int32_t = __getSpvCoopVecMatrixLayout(memoryLayout);
         let matrixPtr = matrix.GetBufferPointer();
+        int operands = 0; // NoneKHR
+        if (__isSignedInt<T>())
+        {
+            operands |= 0x08; // MatrixResultSignedComponentsKHR
+        }
         return spirv_asm
         {
-            result:$$CoopVec<T, M> = OpCooperativeVectorMatrixMulNV $input $inputInterpretationSpirv $matrixPtr $matrixOffset $matrixInterpretationSpirv $m $k $memoryLayoutSpirv $transpose $matrixStride;
+            result:$$CoopVec<T, M> = OpCooperativeVectorMatrixMulNV $input $inputInterpretationSpirv $matrixPtr $matrixOffset $matrixInterpretationSpirv $m $k $memoryLayoutSpirv $transpose $matrixStride !operands;
         };
 
     case hlsl:
@@ -26903,9 +26908,14 @@ CoopVec<T, M> coopVecMatMulPacked(
         let inputInterpretationSpirv : int32_t = __getSpvCoopVecComponentType(inputInterpretation);
         let memoryLayoutSpirv : int32_t = __getSpvCoopVecMatrixLayout(memoryLayout);
         let matrixPtr = __getStructuredBufferPtr(matrix);
+        int operands = 0; // NoneKHR
+        if (__isSignedInt<T>())
+        {
+            operands |= 0x08; // MatrixResultSignedComponentsKHR
+        }
         return spirv_asm
         {
-            result:$$CoopVec<T, M> = OpCooperativeVectorMatrixMulNV $input $inputInterpretationSpirv $matrixPtr $matrixOffset $matrixInterpretationSpirv $m $k $memoryLayoutSpirv $transpose $matrixStride;
+            result:$$CoopVec<T, M> = OpCooperativeVectorMatrixMulNV $input $inputInterpretationSpirv $matrixPtr $matrixOffset $matrixInterpretationSpirv $m $k $memoryLayoutSpirv $transpose $matrixStride !operands;
         };
     }
 }
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