From a8d7bb9f781fd77080f07bfaab54fbbcf3a3686d Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Wed, 30 Apr 2025 16:38:57 -0700
Subject: Add `IOpaqueDescriptor::descriptorAccess`. (#6967)

* Add `IOpaqueHandle::descriptorAccess`.

* Update doc.

* fix.
---
 source/slang/hlsl.meta.slang | 43 +++++++++++++++++++++++++++++--------------
 1 file changed, 29 insertions(+), 14 deletions(-)

(limited to 'source')

diff --git a/source/slang/hlsl.meta.slang b/source/slang/hlsl.meta.slang
index a6e1196e3..3d83e33c1 100644
--- a/source/slang/hlsl.meta.slang
+++ b/source/slang/hlsl.meta.slang
@@ -21966,6 +21966,16 @@ enum DescriptorKind
     AccelerationStructure, /// A ray tracing acceleration structure descriptor.
 }
 
+enum DescriptorAccess
+{
+    Unknown = -1,
+    Read = $(kCoreModule_ResourceAccessReadOnly),
+    Write = $(kCoreModule_ResourceAccessWriteOnly),
+    ReadWrite = $(kCoreModule_ResourceAccessReadWrite),
+    RasterizerOrdered = $(kCoreModule_ResourceAccessRasterizerOrdered),
+    Feedback = $(kCoreModule_ResourceAccessFeedback),
+}
+
 /// Represents an opaque descriptor type, such as textures, samplers, and buffers etc,
 /// whose size may be undefined and can't be directly accessed as ordinary data.
 [sealed]
@@ -21974,6 +21984,7 @@ interface IOpaqueDescriptor
 {
     /// The kind of the descriptor.
     static const DescriptorKind kind;
+    static const DescriptorAccess descriptorAccess;
 }
 
 __magic_type(DynamicResourceType)
@@ -22005,7 +22016,8 @@ extension _Texture<T, Shape, isArray, isMS, sampleCount, access, isShadow, isCom
 
     typealias Handle = DescriptorHandle<This>;
 
-    static const DescriptorKind kind = isCombined!=0 ? DescriptorKind.CombinedTextureSampler : DescriptorKind.Texture;
+    static const DescriptorKind kind = isCombined != 0 ? DescriptorKind.CombinedTextureSampler : DescriptorKind.Texture;
+    static const DescriptorAccess descriptorAccess = (DescriptorAccess)access;
 
     __implicit_conversion($(kConversionCost_ImplicitDereference))
     [ForceInline]
@@ -22021,28 +22033,30 @@ struct DynamicResourceTypeInfo
     const char* name;
     const char* kind;
     const char* dynamicKind;
+    const char* access;
 };
 
 const DynamicResourceTypeInfo kDynamicResourceCastableTypes[] = {
-    {"StructuredBuffer<T, L>", "Buffer", "General"},
-    {"RWStructuredBuffer<T, L>", "Buffer", "General"},
-    {"AppendStructuredBuffer<T, L>", "Buffer", "General"},
-    {"ConsumeStructuredBuffer<T, L>", "Buffer", "General"},
-    {"RasterizerOrderedStructuredBuffer<T, L>", "Buffer", "General"},
-    {"ByteAddressBuffer", "Buffer", "General"},
-    {"RWByteAddressBuffer", "Buffer", "General"},
-    {"RasterizerOrderedByteAddressBuffer", "Buffer", "General"},
-    {"SamplerState", "Sampler", "Sampler"},
-    {"SamplerComparisonState", "Sampler", "Sampler"},
-    {"ConstantBuffer<T, L>", "Buffer", "General"},
-    {"TextureBuffer<T>", "Buffer", "General"},
-    {"RaytracingAccelerationStructure", "AccelerationStructure", "General"},
+    { "StructuredBuffer<T, L>", "Buffer", "General", "Read" },
+    { "RWStructuredBuffer<T, L>", "Buffer", "General", "ReadWrite" },
+    { "AppendStructuredBuffer<T, L>", "Buffer", "General", "ReadWrite" },
+    { "ConsumeStructuredBuffer<T, L>", "Buffer", "General", "ReadWrite" },
+    { "RasterizerOrderedStructuredBuffer<T, L>", "Buffer", "General", "ReadWrite" },
+    { "ByteAddressBuffer", "Buffer", "General", "Read" },
+    { "RWByteAddressBuffer", "Buffer", "General", "ReadWrite" },
+    { "RasterizerOrderedByteAddressBuffer", "Buffer", "General", "ReadWrite" },
+    { "SamplerState", "Sampler", "Sampler", "Unknown" },
+    { "SamplerComparisonState", "Sampler", "Sampler", "Unknown" },
+    { "ConstantBuffer<T, L>", "Buffer", "General", "Read"},
+    { "TextureBuffer<T>", "Buffer", "General", "Read"},
+    { "RaytracingAccelerationStructure", "AccelerationStructure", "General", "Read"},
 };
 
 for (auto type : kDynamicResourceCastableTypes) {
     auto dynamicKind = type.dynamicKind;
     auto kind = type.kind;
     auto typeName = type.name;
+    auto access = type.access;
     if (strstr(typeName, "<T, L>"))
         sb << "__generic<T, L : IBufferDataLayout>\n";
     else if (strstr(typeName, "<T>"))
@@ -22056,6 +22070,7 @@ extension $(typeName) : __IDynamicResourceCastable<__DynamicResourceKind.$(dynam
     __init(__DynamicResource res);
 
     static const DescriptorKind kind = DescriptorKind.$(kind);
+    static const DescriptorAccess descriptorAccess = DescriptorAccess.$(access);
 
     typealias Handle = DescriptorHandle<$(typeName)>;
 
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