ResourceDescriptorHeap doesn't work properly with templates (hlsl-2021)

[Jasper-Bekkers]

#ifdef FAILURE_CASE
struct SimpleBuffer {
    uint handle;

    template<typename T>
    T Load() {
        ByteAddressBuffer buf = ResourceDescriptorHeap[this.handle];
        return buf.Load<T>(0);
    }
};
#endif

[numthreads(1,1,1)]
void main() {
#ifdef FAILURE_CASE
    SimpleBuffer b = (SimpleBuffer)0;
    b.Load<uint>();
#endif

    ByteAddressBuffer buf = ResourceDescriptorHeap[0];
    buf.Load<uint>(0);
}

Works:
dxc -Tcs_6_6 -Emain -enable-templates test_bindless.hlsl

Doesn't work:
dxc -Tcs_6_6 -Emain -enable-templates -DFAILURE_CASE test_bindless.hlsl

Errors generated:

test_bindless.hlsl:8:20: error: no member named 'Load' in 'ByteAddressBuffer'
        return buf.Load<T>(0);
               ~~~ ^
test_bindless.hlsl:8:25: error: 'T' does not refer to a value
        return buf.Load<T>(0);
                        ^
test_bindless.hlsl:5:23: note: declared here
    template<typename T>
                      ^
test_bindless.hlsl:21:5: warning: ignoring return value of function that only reads data [-Wunused-value]
    buf.Load<uint>(0);
    ^~~~~~~~~~~~~~ ~

Notice, this doesn't just affect ByteAddressBuffer but all resource types it seems (StructuredBuffer, Texture etc).

[Jasper-Bekkers]

@tcorringham You may be interested in this