[DirectX] Updating Root Signature Metadata to contain Static Sampler flags #160210

joaosaffran · 2025-09-22T22:37:44Z

Root Signature 1.2 adds flags to static samplers. This requires us to change the metadata representation to account for it when being generated. This patch focus on the metadata changes required in the backend, frontend changes will come in a future PR.

…llvm-project into obj2yaml/root-signature-1.2

…er-view

llvmbot · 2025-09-22T22:38:18Z

@llvm/pr-subscribers-clang
@llvm/pr-subscribers-backend-directx

@llvm/pr-subscribers-hlsl

Author: None (joaosaffran)

Changes

Root Signature 1.2 adds flags to static samplers. This requires us to change the metadata representation to account for it when being generated. This patch focus on the metadata changes required in the backend, frontend changes will come in a future PR.

Patch is 20.47 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/160210.diff

19 Files Affected:

(modified) clang/test/CodeGenHLSL/RootSignature.hlsl (+2-2)
(modified) llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp (+13-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressU.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressV.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressW.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-BorderColor.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ComparisonFunc.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Filter.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxAnisotropy.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxLod.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLod.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLopBias.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-RegisterSpace.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderRegister.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderVisibility.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers.ll (+1-1)
(added) llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll (+43)
(modified) llvm/test/CodeGen/DirectX/rootsignature-validation-fail-sampler.ll (+1-1)
(modified) llvm/test/CodeGen/DirectX/rootsignature-validation-fail-static-sampler-range.ll (+2-2)

diff --git a/clang/test/CodeGenHLSL/RootSignature.hlsl b/clang/test/CodeGenHLSL/RootSignature.hlsl
index bc40bdd79ce59..bbab6a73a3658 100644
--- a/clang/test/CodeGenHLSL/RootSignature.hlsl
+++ b/clang/test/CodeGenHLSL/RootSignature.hlsl
@@ -82,8 +82,8 @@ void RootDescriptorsEntry() {}
 // checking minLOD, maxLOD
 // CHECK-SAME: float -1.280000e+02, float 1.280000e+02,
 
-// checking register, space and visibility
-// CHECK-SAME: i32 42, i32 0, i32 0}
+// checking register, space, visibility and flags
+// CHECK-SAME: i32 42, i32 0, i32 0, i32 0}
 
 #define SampleStaticSampler \
   "StaticSampler(s42, " \
diff --git a/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp b/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp
index f29f2c7602fc6..5ddf129265648 100644
--- a/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp
+++ b/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp
@@ -212,6 +212,7 @@ MDNode *MetadataBuilder::BuildStaticSampler(const StaticSampler &Sampler) {
       ConstantAsMetadata::get(Builder.getInt32(Sampler.Space)),
       ConstantAsMetadata::get(
           Builder.getInt32(to_underlying(Sampler.Visibility))),
+      ConstantAsMetadata::get(Builder.getInt32(0)),
   };
   return MDNode::get(Ctx, Operands);
 }
@@ -411,7 +412,7 @@ Error MetadataParser::parseDescriptorTable(mcdxbc::RootSignatureDesc &RSD,
 
 Error MetadataParser::parseStaticSampler(mcdxbc::RootSignatureDesc &RSD,
                                          MDNode *StaticSamplerNode) {
-  if (StaticSamplerNode->getNumOperands() != 14)
+  if (StaticSamplerNode->getNumOperands() != 15)
     return make_error<InvalidRSMetadataFormat>("Static Sampler");
 
   mcdxbc::StaticSampler Sampler;
@@ -495,6 +496,17 @@ Error MetadataParser::parseStaticSampler(mcdxbc::RootSignatureDesc &RSD,
     return Error(std::move(E));
   Sampler.ShaderVisibility = *Visibility;
 
+  if (RSD.Version < 3) {
+    RSD.StaticSamplers.push_back(Sampler);
+    return Error::success();
+  }
+  assert(RSD.Version >= 3);
+
+  if (std::optional<uint32_t> Val = extractMdIntValue(StaticSamplerNode, 14))
+    Sampler.Flags = *Val;
+  else
+    return make_error<InvalidRSMetadataValue>("Static Sampler Flags");
+
   RSD.StaticSamplers.push_back(Sampler);
   return Error::success();
 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressU.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressU.ll
index 288dea00b6e55..b043ea1418df6 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressU.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressU.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 666, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 666, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressV.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressV.ll
index e9abcf9669999..8219ffdd679d2 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressV.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressV.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 666, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 666, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressW.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressW.ll
index 238f488ee78d6..31d8dd10f3e22 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressW.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-AddressW.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 666, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 666, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-BorderColor.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-BorderColor.ll
index 8dc69eb1f9d7c..2bb4af5d9c0f2 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-BorderColor.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-BorderColor.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 666, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 666, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ComparisonFunc.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ComparisonFunc.ll
index b2c8faf8d4a0a..62fda735b6860 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ComparisonFunc.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ComparisonFunc.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 666, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 666, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Filter.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Filter.ll
index 758d2629ed78e..7e8de14160ce9 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Filter.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Filter.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 45, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 45, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxAnisotropy.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxAnisotropy.ll
index 47d4b52d72e8e..312e7697d4f2a 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxAnisotropy.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxAnisotropy.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 666, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 666, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxLod.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxLod.ll
index 855e0c0cb6e51..80fd208a1bceb 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxLod.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MaxLod.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 0x7FF8000000000000, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 0x7FF8000000000000, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLod.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLod.ll
index 812749b9ed824..5daaf69a40062 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLod.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLod.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float 0x7FF8000000000000, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float 0x7FF8000000000000, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLopBias.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLopBias.ll
index 6898aec6f2e49..423987b0e2624 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLopBias.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-MinLopBias.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 6.660000e+02, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 6.660000e+02, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-RegisterSpace.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-RegisterSpace.ll
index dc6ee4290b532..af630dcdd0300 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-RegisterSpace.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-RegisterSpace.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 4294967280, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 4294967280, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderRegister.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderRegister.ll
index 6cee1dd95fd81..bd752f0519da4 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderRegister.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderRegister.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 4294967295, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 4294967295, i32 0, i32 0, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderVisibility.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderVisibility.ll
index fa5bf12e2b8cd..ca0c02d64983b 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderVisibility.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-ShaderVisibility.ll
@@ -16,4 +16,4 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 666 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 666, i32 0 }
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers.ll
index 1dd470d7fb822..77c5c7af66247 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers.ll
@@ -15,7 +15,7 @@ attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
 !dx.rootsignatures = !{!2} ; list of function/root signature pairs
 !2 = !{ ptr @main, !3, i32 2 } ; function, root signature
 !3 = !{ !5 } ; list of root signature elements
-!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0 }
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 0 }
 
 ; DXC: - Name:            RTS0
 ; DXC-NEXT:     Size:            76
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll
new file mode 100644
index 0000000000000..c7dd8065199a1
--- /dev/null
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll
@@ -0,0 +1,43 @@
+; RUN: opt %s -dxil-embed -dxil-globals -S -o - | FileCheck %s
+; RUN: llc %s --filetype=obj -o - | obj2yaml | FileCheck %s --check-prefix=DXC
+
+target triple = "dxil-unknown-shadermodel6.0-compute"
+
+; CHECK: @dx.rts0 = private constant [80 x i8]  c"{{.*}}", section "RTS0", align 4
+
+define void @main() #0 {
+entry:
+  ret void
+}
+attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
+
+
+!dx.rootsignatures = !{!2} ; list of function/root signature pairs
+!2 = !{ ptr @main, !3, i32 3 } ; function, root signature
+!3 = !{ !5 } ; list of root signature elements
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 1 }
+
+; DXC: - Name:            RTS0
+; DXC-NEXT:     Size:            80
+; DXC-NEXT:     RootSignature:
+; DXC-NEXT:       Version:         3
+; DXC-NEXT:       NumRootParameters: 0
+; DXC-NEXT:       RootParametersOffset: 24
+; DXC-NEXT:       NumStaticSamplers: 1
+; DXC-NEXT:       StaticSamplersOffset: 24
+; DXC-NEXT:       Parameters:      []
+; DXC-NEXT:       Samplers:
+; DXC-NEXT:         - Filter:          MinPointMagLinearMipPoint
+; DXC-NEXT:           AddressU:        Mirror
+; DXC-NEXT:           AddressV:        Clamp
+; DXC-NEXT:           AddressW:        MirrorOnce
+; DXC-NEXT:           MipLODBias:      1.425
+; DXC-NEXT:           MaxAnisotropy:   9
+; DXC-NEXT:           ComparisonFunc:  Equal
+; DXC-NEXT:           BorderColor:     OpaqueWhite
+; DXC-NEXT:           MinLOD:          -128
+; DXC-NEXT:           MaxLOD:          128
+; DXC-NEXT:           ShaderRegister:  42
+; DXC-NEXT:           RegisterSpace:   0
+; DXC-NEXT:           ShaderVisibility: All
+; DXC-NEXT:           SAMPLER_FLAG_UINT_BORDER_COLOR: true 
diff --git a/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-sampler.ll b/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-sampler.ll
index c244095520468..b68606d656d75 100644
--- a/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-sampler.ll
+++ b/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-sampler.ll
@@ -10,6 +10,6 @@ entry:
 
 !0 = !{ptr @CSMain, !1, i32 2}
 !1 = !{!2, !3}
-!2 = !{ !"StaticSampler", i32 5, i32 4, i32 5, i32 3, float 0x3FF7CCCCC0000000, i32 10, i32 2, i32 1, float -1.270000e+02, float 1.220000e+02, i32 42, i32 0, i32 0 }
+!2 = !{ !"StaticSampler", i32 5, i32 4, i32 5, i32 3, float 0x3FF7CCCCC0000000, i32 10, i32 2, i32 1, float -1.270000e+02, float 1.220000e+02, i32 42, i32 0, i32 0, i32 0 }
 !3 = !{!"DescriptorTable", i32 0, !4}
 !4 = !{!"Sampler", i32 1, i32 42, i32 0, i32 -1, i32 0}
diff --git a/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-static-sampler-range.ll b/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-static-sampler-range.ll
index 9ac02ebbc0965..7c836e2f85d68 100644
--- a/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-static-sampler-range.ll
+++ b/llvm/test/CodeGen/DirectX/rootsignature-validation-fail-static-sampler-range.ll
@@ -10,5 +10,5 @@ entry:
 
 !0 = !{ptr @CSMain, !1, i32 2}
 !1 = !{!2, !3}
-!2 = !{ !"StaticSampler", i32 5, i32 4, i32 5, i32 3, float 0x3FF7CCCCC0000000, i32 10, i32 2, i32 1, float -1.270000e+02, float 1.220000e+02, i32 42, i32 0, i32 0 }
-!3 = !{ !"StaticSampler", i32 4, ...
[truncated]

inbelic

I think the intent was to not have any of the lexing/parsing logic in this pr? Could you please update with the complete parsing/lexing testing or remove said logic from this pr

inbelic · 2025-09-23T20:00:02Z

clang/unittests/Lex/LexHLSLRootSignatureTest.cpp

We should add testing to ParseHLSLRootSignatureTest.cpp that the flags can be set correctly

Sorry, made a mistake, I will fix it in the next commit

inbelic · 2025-09-23T20:02:34Z

llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

@@ -212,6 +212,7 @@ MDNode *MetadataBuilder::BuildStaticSampler(const StaticSampler &Sampler) {
      ConstantAsMetadata::get(Builder.getInt32(Sampler.Space)),
      ConstantAsMetadata::get(
          Builder.getInt32(to_underlying(Sampler.Visibility))),
+      ConstantAsMetadata::get(Builder.getInt32(0)),


Maybe this is just a temporary measure? If so, I think we can move all of the lexing/parsing components to a stacked pr. Otherwise, we have no testing that it is working

Suggested change

ConstantAsMetadata::get(Builder.getInt32(0)),

ConstantAsMetadata::get(Builder.getInt32(Sample.Flags)),

Yeah, this is just a temporary fix, I've a follow up PR focused on the frontend changes. I need to add this here, otherwise metadata generation will Fail. Maybe instead of hard coding I can add the flags to StaticSamplers and set them to be None, as this is the default anyway

inbelic

Is it possible to specify both sampler flags? Or just one or the other?

inbelic · 2025-09-24T18:34:27Z

llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

      ConstantAsMetadata::get(
          Builder.getInt32(to_underlying(Sampler.Visibility))),
+      ConstantAsMetadata::get(
+        Builder.getInt32(to_underlying(Sampler.Visibility))),


Suggested change

Builder.getInt32(to_underlying(Sampler.Visibility))),

Builder.getInt32(0)),

I think 0 makes more sense as the temporary measure

inbelic · 2025-09-24T18:36:47Z

llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll

+!dx.rootsignatures = !{!2} ; list of function/root signature pairs
+!2 = !{ ptr @main, !3, i32 3 } ; function, root signature
+!3 = !{ !5 } ; list of root signature elements
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 1 }


I think we should have a test for the other valid flag and also when their or'd value is specified. Is it allowed to have both flags set at the same time?

I've added other scenarios for all flags below.

…eratio

joaosaffran · 2025-09-25T17:04:23Z

llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

      ConstantAsMetadata::get(
          Builder.getInt32(to_underlying(Sampler.Visibility))),
-  };
+      ConstantAsMetadata::get(Builder.getInt32(0))};


This is a temporary fix, I am working on the frontend changes in a different PR.

Note: we should probably stack the frontend changes to go in before this so that we avoid this temporary state

I think that merge with this temporary fix is better. Since, if we update the frontend first, it is going to break the backend, since it still expect StaticSampler MD Nodes to contain 14 values and not 15. @bogner what do you think is the best direction here?

There are a few ways to stage this, but I agree that if we're doing either the backend or the frontend first we run into similar problems. However, I do share @inbelic's concern that this is a bit of an awkward temporary state.

It might be worthwhile to just wire up enough of the frontend in this PR that it's explicitly writing out the empty flags. That is, update the StaticSampler definition to include the flags now, but just initialize it to zero in the frontend. This way the metadata stays consistent between the frontend and the backend.

Either way, this deserves a comment in the code saying what's going on.

…er-view

…re1.2

inbelic

I do think we should add the basic verifications in this pr, and probably change the stack order so that the front-end changes happen first. Otherwise, this is looking good to me

inbelic · 2025-09-25T17:15:32Z

llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll

+; DXC-NEXT:       StaticSamplersOffset: 24
+; DXC-NEXT:       Parameters:      []
+; DXC-NEXT:       Samplers:
+; DXC-LABEL:         ShaderRegister:  42


nit: I think DXC-NEXT is more strict and generally preferred. Is there a reason to use label over that?

I am avoiding the need to check all the other values in the static samplers, otherwise this test would become really big and would need to check all the other samplers parameters other than the flags

CHECK-LABEL isn't correct here - that's for dividing checks into logical blocks (ie, you might use it to find the beginning of a function, or something to that effect). Just using a CHECK (ie, DXC: ) would make more sense if we don't want to check every line.

Disregard - I guess this is sort of CHECK-LABEL behaviour, I saw it out of context.

inbelic · 2025-09-25T17:18:50Z

llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers_V3.ll

Should we also have testing of an invalid value? I think it makes sense to include the basic verifications in this pr

inbelic · 2025-09-25T17:19:30Z

llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

      ConstantAsMetadata::get(
          Builder.getInt32(to_underlying(Sampler.Visibility))),
-  };
+      ConstantAsMetadata::get(Builder.getInt32(0))};


Note: we should probably stack the frontend changes to go in before this so that we avoid this temporary state

…er-view

…re1.2

joaosaffran · 2025-10-01T17:27:12Z

llvm/include/llvm/Frontend/HLSL/HLSLRootSignature.h

  float MaxLOD = std::numeric_limits<float>::max();
  uint32_t Space = 0;
  dxbc::ShaderVisibility Visibility = dxbc::ShaderVisibility::All;
+  dxbc::StaticSamplerFlags Flags = dxbc::StaticSamplerFlags::None;


This is the minimum change required to make the frontend emit valid metadata.

bogner · 2025-10-01T18:49:31Z

llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

+  if (RSD.Version < 3) {
+    RSD.StaticSamplers.push_back(Sampler);
+    return Error::success();
+  }
+  assert(RSD.Version >= 3);


The metadata always has a value now, so this early exit isn't necessary

The metadata always had a value, this version exists just to ignore it if we are using the incorrect version and prevent the Flags to be set in the wrong version. We did the same logic for other flags that got added in different versions, like Root Descriptor

llvm-project/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

Line 321 in 78c6554

assert(RSD.Version > 1);

As per our offline discussion, I've filed an issue to throw an error when we notice the flags are being set in an unsupported version: #161579

llvm-ci · 2025-10-01T21:27:35Z

LLVM Buildbot has detected a new failure on builder cross-project-tests-sie-ubuntu-dwarf5 running on doug-worker-1b while building clang,llvm at step 6 "test-build-unified-tree-check-cross-project".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/163/builds/27434

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-cross-project) failure: test (failure)
******************** TEST 'cross-project-tests :: debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
optnone-vectors-and-functions.cpp: (1.0000)

## BEGIN ##
.   [0, "int vector[4] test1<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 30, 11, "StopReason.BREAKPOINT", "StepKind.FUNC", []]
.   [1, "int vector[4] test1<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 31, 12, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [2, "int vector[4] test1<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 32, 10, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [3, "int vector[4] test2<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 59, 7, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [4, "int vector[4] test2<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 61, 9, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [5, "int vector[4] test2<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 62, 12, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [6, "int vector[4] test2<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 65, 14, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [7, "int vector[4] test2<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 66, 10, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [8, "int vector[4] test3<int vector[4]>(int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 93, 23, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [9, "int vector[4] test3<int vector[4]>(int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 94, 10, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [10, "int vector[4] test4<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 110, 13, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
.   [11, "int vector[4] test4<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 110, 13, "StopReason.BREAKPOINT", "StepKind.SAME", []]
.   [12, "int vector[4] test4<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 110, 13, "StopReason.BREAKPOINT", "StepKind.SAME", []]
.   [13, "int vector[4] test4<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 110, 13, "StopReason.BREAKPOINT", "StepKind.SAME", []]
.   [14, "int vector[4] test4<int vector[4]>(int vector[4], int vector[4])", "/home/buildbot/buildbot-root/cross-project-tests-sie-ubuntu-dwarf5/llvm-project/cross-project-tests/debuginfo-tests/dexter-tests/optnone-vectors-and-functions.cpp", 111, 10, "StopReason.BREAKPOINT", "StepKind.VERTICAL_FORWARD", []]
## END (15 steps) ##


  optnone-vectors-and-functions.cpp:110 [i] ExpectValue [0/21]
    expected encountered watches:
      0
      1
      2
      3

  optnone-vectors-and-functions.cpp:110-111 [x[0]] ExpectValue [0/14]
    expected encountered watches:
      1
      8

  optnone-vectors-and-functions.cpp:110-111 [x[1]] ExpectValue [0/14]
    expected encountered watches:
      2
      9

  optnone-vectors-and-functions.cpp:110-111 [x[2]] ExpectValue [0/14]
    expected encountered watches:
      10
      3

  optnone-vectors-and-functions.cpp:110-111 [x[3]] ExpectValue [0/14]
    expected encountered watches:
...

…flags (llvm#160210) Root Signature 1.2 adds flags to static samplers. This requires us to change the metadata representation to account for it when being generated. This patch focus on the metadata changes required in the backend, frontend changes will come in a future PR.

joaosaffran added 15 commits September 18, 2025 14:21

adding yaml representation and updating write logic

787c776

fix test

57fd710

adding missing test

d72adfe

Merge branch 'main' into obj2yaml/root-signature-1.2

23803b7

fix test

fefd58c

Merge branch 'main' into obj2yaml/static-sampler-view

13d945d

adding samplers_iterator

1d0cbd3

this was easier than I thought

e530bcc

adding new test

79ea587

Merge branch 'main' into obj2yaml/root-signature-1.2

367ac8c

Merge branch 'obj2yaml/root-signature-1.2' of github.com:joaosaffran/…

a08c05e

…llvm-project into obj2yaml/root-signature-1.2

Merge branch 'obj2yaml/root-signature-1.2' into obj2yaml/static-sampl…

159388d

…er-view

clean up

905d5d3

clean up

b73bf24

adding metadata static sampler flags

6b191d0

joaosaffran requested review from bogner and inbelic September 22, 2025 22:37

llvmbot added clang Clang issues not falling into any other category backend:DirectX HLSL HLSL Language Support labels Sep 22, 2025

joaosaffran linked an issue Sep 23, 2025 that may be closed by this pull request

[HLSL] Update Root Signature validation to support Version 1.2 #126649

Closed

3 tasks

llvmbot added the clang:frontend Language frontend issues, e.g. anything involving "Sema" label Sep 23, 2025

inbelic reviewed Sep 23, 2025

View reviewed changes

joaosaffran marked this pull request as draft September 24, 2025 05:48

joaosaffran force-pushed the metadata/rootsignature1.2 branch 2 times, most recently from 7c70e3b to 6b191d0 Compare September 24, 2025 05:54

joaosaffran marked this pull request as ready for review September 24, 2025 17:14

joaosaffran added 2 commits September 24, 2025 10:57

adding default flag to frontend root signature

cc05d4d

address suggestion from inbelic

f02d18e

inbelic reviewed Sep 24, 2025

View reviewed changes

joaosaffran added 5 commits September 24, 2025 11:45

changing size and remove untested parameters

ddf9945

adding suggested comment

284901c

addressing inbelic comments

73e6bb5

addressing inbelic comments

159cd57

updating test to account all flags and remove unecessary metadata gen…

ae969d4

…eratio

joaosaffran requested a review from inbelic September 24, 2025 20:05

joaosaffran added 2 commits September 24, 2025 13:47

format

b7f07aa

format

c25fee8

joaosaffran commented Sep 25, 2025

View reviewed changes

joaosaffran added 2 commits September 25, 2025 10:08

Merge branch 'obj2yaml/root-signature-1.2' into obj2yaml/static-sampl…

b5ecf7f

…er-view

Merge branch 'obj2yaml/static-sampler-view' into metadata/rootsignatu…

6187125

…re1.2

inbelic reviewed Sep 25, 2025

View reviewed changes

joaosaffran added 4 commits September 25, 2025 17:46

adding test to check flags

8d017fa

remove test

efcd873

Merge branch 'obj2yaml/root-signature-1.2' into obj2yaml/static-sampl…

9c2c1d3

…er-view

Merge branch 'obj2yaml/static-sampler-view' into metadata/rootsignatu…

97e733b

…re1.2

joaosaffran changed the base branch from users/joaosaffran/160184 to main September 26, 2025 20:04

joaosaffran added 2 commits September 26, 2025 13:04

Merge branch 'main' into metadata/rootsignature1.2

0796e45

adding default sampler

066c113

joaosaffran requested a review from inbelic September 26, 2025 20:07

fix

f38b4c3

joaosaffran commented Oct 1, 2025

View reviewed changes

bogner reviewed Oct 1, 2025

View reviewed changes

joaosaffran requested a review from bogner October 1, 2025 20:09

joaosaffran mentioned this pull request Oct 1, 2025

[DirectX] Error when setting flags in the wrong version of Root Signature #161579

Closed

bogner approved these changes Oct 1, 2025

View reviewed changes

joaosaffran merged commit 56ca23c into llvm:main Oct 1, 2025
10 checks passed

	ConstantAsMetadata::get(Builder.getInt32(0)),
	ConstantAsMetadata::get(Builder.getInt32(Sample.Flags)),

	Builder.getInt32(to_underlying(Sampler.Visibility))),
	Builder.getInt32(0)),

[DirectX] Updating Root Signature Metadata to contain Static Sampler flags #160210

[DirectX] Updating Root Signature Metadata to contain Static Sampler flags #160210

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