SDSL does not support Texture2D arrays as shader resources (array-of-texture)

Release Type: Official Release

Version: v4.3.0.2507

Platform(s): Windows

Describe the bug
SDSL currently does not support array-of-texture shader resources such as:

rgroup PerMaterial
{
    stage Texture2D<float> HeightmapSlices[8];
}

To Reproduce
Steps to reproduce the behavior:
RT

Expected behavior
correct code generation,
correct reflection/parameter keys behavior,
correct descriptor binding behavior across backends.

Log and callstacks
error X3000: unrecognized identifier 'rgroup'

The problematic code snippet is as follows:

[ShaderLinker.cs]

230: else if (variable.Type is TextureType || variable.Type is GenericBaseType || variable.Type.IsByteAddressBufferType())
231: {
232:     LinkVariable(effectReflection, variable.Name, parameterKey, slotCount);
233: }
234: else
235: {
236:     ParseConstantBufferVariable(“$Globals”, variable);
237: }

Here, the type of Texture2D[8] is ArrayType(TextureType), so variable.Type is TextureType does not match, and the error proceeds to ParseConstantBufferVariable(...).

[StrideShaderMixer.cs]

1320: private bool IsOutOfCBufferVariable(Variable variable)
1321: {
1322:     return variable.Type.IsSamplerType()
1323:         || variable.Type is TextureType
1324:         || variable.Type.IsStateType()
1325:         || variable.Type.ResolveType() is ObjectType
1326:         || variable.Qualifiers.Contains(StorageQualifier.Shared)
1327:         || variable.Qualifiers.Contains(StorageQualifier.GroupShared);
1328: }

Similarly, ArrayType(TextureType) was omitted, causing array textures to not be recognized as resources that “should reside outside the cbuffer.”

[StrideShaderMixer.cs]

1303: if (variable.Type.IsSamplerType() || variable.Type is TextureType || variable.Type.ResolveType() is ObjectType)
1304:     continue;

This “resource reservation” logic also has the same oversight; array resources are not covered by the protection.

Start with the ArrayType handling in ShaderLinker.cs around the shown resource-linking branch, then inspect IsOutOfCBufferVariable and the resource-reservation logic in StrideShaderMixer.cs. Confirm that array textures receive correct code generation, reflection and parameter-key behavior, and descriptor binding across backends.