Initial implementation of SP#015 `DescriptorHandle<T>`. (#6028)

* Initial implementation of `ResourcePtr<T>`.

* Update docs

* Fix build error.

* Add more discussion.

* Update documentation.

* Update TOC.

* Fix.

* Fix.

* Add test case for custom `getResourceFromBindlessHandle`.

* Add namehint to generated descriptor heap param.

* Fix.

* Fix.

* format code

* Rename to `DescriptorHandle`, and add `T.Handle` alias.

* Fix compiler error.

* Fix.

* Fix build.

* Renames.

* Fix documentation.

* Documentation fix.

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Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/source/slang/slang-ir-layout.cpp b/source/slang/slang-ir-layout.cpp
index 8180ea6aa..1332c8a25 100644
--- a/source/slang/slang-ir-layout.cpp
+++ b/source/slang/slang-ir-layout.cpp
@@ -355,6 +355,14 @@ static Result _calcSizeAndAlignment(
     case kIROp_DefaultBufferLayoutType:
         *outSizeAndAlignment = IRSizeAndAlignment(0, 4);
         return SLANG_OK;
+    case kIROp_DescriptorHandleType:
+        {
+            IRBuilder builder(type);
+            builder.setInsertBefore(type);
+            auto uintType = builder.getUIntType();
+            auto uint2Type = builder.getVectorType(uintType, 2);
+            return getSizeAndAlignment(optionSet, rules, uint2Type, outSizeAndAlignment);
+        }
     case kIROp_AttributedType:
         {
             auto attributedType = cast<IRAttributedType>(type);