Add SPIRV intrinsics for texture footprint query. (#3345)

* Add SPIRV intrinsics for texture footprint query.

* Cleanup.

---------

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/source/slang/slang-emit-hlsl.cpp b/source/slang/slang-emit-hlsl.cpp
index 9b333c281..416e8b0a1 100644
--- a/source/slang/slang-emit-hlsl.cpp
+++ b/source/slang/slang-emit-hlsl.cpp
@@ -937,6 +937,11 @@ void HLSLSourceEmitter::emitSimpleTypeImpl(IRType* type)
             m_writer->emit("NvHitObject");
             return;
         }
+        case kIROp_TextureFootprintType:
+        {
+            m_writer->emit("uint4");
+            return;
+        }
         default: break;
     }