Add CalculateLevelOfDetail* overloads for comparison samplers (#6018)

* add CalculateLevelOfDetail* intrinsics for comparison samplers

* fix dx12 test

* fix metallib test

* fix merge conflict

---------

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/hlsl-intrinsic/texture/texture-calculate-level-of-detail.slang b/tests/hlsl-intrinsic/texture/texture-calculate-level-of-detail.slang
new file mode 100644
index 000000000..0b623c1f6
--- /dev/null
+++ b/tests/hlsl-intrinsic/texture/texture-calculate-level-of-detail.slang
@@ -0,0 +1,27 @@
+//TEST:SIMPLE(filecheck=CHECK_HLSL): -stage fragment -entry fragmentMain -target hlsl
+//TEST:SIMPLE(filecheck=CHECK_SPIRV): -stage fragment -entry fragmentMain -target spirv
+
+Texture2D t;
+SamplerState s;
+SamplerComparisonState sc;
+
+float fragmentMain()
+{
+    float result = 0.0;
+
+    // CHECK_SPIRV: OpCapability ImageQuery
+
+    // CHECK_HLSL: CalculateLevelOfDetail
+    // CHECK_HLSL: CalculateLevelOfDetailUnclamped
+    // CHECK_SPIRV: OpImageQueryLod
+    // CHECK_SPIRV: OpImageQueryLod
+    result += t.CalculateLevelOfDetail(s, float2(0,0)) + t.CalculateLevelOfDetailUnclamped(s, float2(0,0));
+
+    // CHECK_HLSL: CalculateLevelOfDetail
+    // CHECK_HLSL: CalculateLevelOfDetailUnclamped
+    // CHECK_SPIRV: OpImageQueryLod
+    // CHECK_SPIRV: OpImageQueryLod
+    result += t.CalculateLevelOfDetail(sc, float2(0,0)) + t.CalculateLevelOfDetailUnclamped(sc, float2(0,0));
+
+    return result;
+}