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.

---------

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

1 files changed, 14 insertions, 0 deletions

diff --git a/source/slang/slang-emit.cpp b/source/slang/slang-emit.cpp
index cd1b177b2..ee2582267 100644
--- a/source/slang/slang-emit.cpp
+++ b/source/slang/slang-emit.cpp
@@ -43,6 +43,7 @@
 #include "slang-ir-explicit-global-context.h"
 #include "slang-ir-explicit-global-init.h"
 #include "slang-ir-fix-entrypoint-callsite.h"
+#include "slang-ir-float-non-uniform-resource-index.h"
 #include "slang-ir-fuse-satcoop.h"
 #include "slang-ir-glsl-legalize.h"
 #include "slang-ir-glsl-liveness.h"
@@ -64,6 +65,7 @@
 #include "slang-ir-lower-bit-cast.h"
 #include "slang-ir-lower-buffer-element-type.h"
 #include "slang-ir-lower-combined-texture-sampler.h"
+#include "slang-ir-lower-dynamic-resource-heap.h"
 #include "slang-ir-lower-generics.h"
 #include "slang-ir-lower-glsl-ssbo-types.h"
 #include "slang-ir-lower-l-value-cast.h"
@@ -316,6 +318,7 @@ struct RequiredLoweringPassSet
     bool glslSSBO;
     bool byteAddressBuffer;
     bool dynamicResource;
+    bool dynamicResourceHeap;
     bool resolveVaryingInputRef;
 };
 
@@ -426,6 +429,9 @@ void calcRequiredLoweringPassSet(
     case kIROp_DynamicResourceType:
         result.dynamicResource = true;
         break;
+    case kIROp_GetDynamicResourceHeap:
+        result.dynamicResourceHeap = true;
+        break;
     case kIROp_ResolveVaryingInputRef:
         result.resolveVaryingInputRef = true;
         break;
@@ -1122,6 +1128,9 @@ Result linkAndOptimizeIR(
     else
         simplifyIR(targetProgram, irModule, fastIRSimplificationOptions, sink);
 
+    if (requiredLoweringPassSet.dynamicResourceHeap)
+        lowerDynamicResourceHeap(targetProgram, irModule, sink);
+
 #if 0
     dumpIRIfEnabled(codeGenContext, irModule, "AFTER SSA");
 #endif
@@ -1391,6 +1400,11 @@ Result linkAndOptimizeIR(
         break;
     }
 
+    if (!isSPIRV(targetRequest->getTarget()))
+    {
+        floatNonUniformResourceIndex(irModule, NonUniformResourceIndexFloatMode::Textual);
+    }
+
     // Legalize non struct parameters that are expected to be structs for HLSL.
     if (isD3DTarget(targetRequest))
         legalizeNonStructParameterToStructForHLSL(irModule);