Issues

• Metal: SV_ClipDistance / SV_CullDistance outputs are emitted with an empty [[]] attribute

  reproduced
  Bug

  shader-slang/slang#13934 · Filter by author nv-slang-bot opened on Oct 25, 2026

• WGSL/WebGPU features Slang cannot express at all: pixel local storage, texture_external, static samplers, compat mode

  Feature

  shader-slang/slang#13933 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

• WGSL: Chromium experimental extensions that map to existing Slang features (barycentrics, view index, framebuffer fetch, multisampled array textures)

  reproduced
  Feature

  shader-slang/slang#13932 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

• SV_ClipDistance on a float2/float4 (HLSL SV_ClipDistance0/1) is rejected with E30701 on every target

  regressionreproduced
  Bug

  shader-slang/slang#13931 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

• WGSL, Metal: a fragment shader's non-struct return value always writes render target 0 (SV_Depth, SV_Target1 and SV_Coverage are ignored)

  shader-slang/slang#13924 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  

• WGSL: InterlockedCompareExchange / Atomic<T>.compareExchange use atomicCompareExchangeWeak and can miss a spurious failure

  shader-slang/slang#13917 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  

• WGSL: expose 64-bit atomic min/max through atomic_vec2u_min_max (atomicStoreMin/atomicStoreMax on atomic<vec2<u32>>)

  reproduced
  Feature

  shader-slang/slang#13916 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

• WGSL: RWByteAddressBuffer.Interlocked* is unavailable; how should a byte-address buffer with atomics be lowered?

  reproduced
  Feature

  shader-slang/slang#13915 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

• WGSL: Slang emits naga-only WGSL (u64, atomic<f32>, atomic<u64>) without a diagnostic; Chrome rejects it only at pipeline creation

  shader-slang/slang#13914 · Filter by author albertrodriguezclo opened on Oct 25, 2026

• WGSL: CalculateLevelOfDetail / CalculateLevelOfDetailUnclamped are unavailable (E36107); emulate them from derivatives?

  shader-slang/slang#13913 · Filter by author albertrodriguezclo opened on Oct 25, 2026

• Unused wave/subgroup intrinsic calls are never removed, because Slang treats them as having side effects

  shader-slang/slang#13910 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  

• GLSL, HLSL, Metal, C++ and WGSL write every NaN constant as a canonical NaN, losing its sign and payload

  reproduced
  Bug

  shader-slang/slang#13909 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

  

• WGSL: SampleCmp / GatherCmp on a Texture2D<float> emit invalid WGSL (texture_2d<f32> instead of texture_depth_2d)

  shader-slang/slang#13906 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  

• WGSL: ConstantBuffer<T, ScalarDataLayout> is emitted with 4-byte array strides, but reflection reports std140 offsets

  reproduced
  Bug

  shader-slang/slang#13904 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  1

  

• WGSL: static const arrays are emitted as var<private> and can exceed WGSL's 8192-byte private-variable limit (Safari rejects the shader)

  shader-slang/slang#13902 · Filter by author albertrodriguezclo opened on Oct 25, 2026
  

• Metal: top-level DescriptorHandle parameters use resource bindings instead of ordinary-data layout

  reproducedRTR
  Bug

  shader-slang/slang#13900 · Filter by author skallweitNV opened on Oct 24, 2026
  1

• Preserve capability requirements separately for each entry-point specialization

  shader-slang/slang#13899 · Filter by author kaizhangNV opened on Oct 23, 2026
  

• SPIR-V: an array of WTexture* does not get the NonReadable decoration

  reproduced
  Bug

  shader-slang/slang#13895 · Filter by author fuchstraumer opened on Oct 23, 2026
  2

  

• Bound resource arrays are copied per invocation instead of referenced (seen on Metal)

  shader-slang/slang#13894 · Filter by author nv-slang-bot opened on Oct 23, 2026

• Generic entry-point selection omits capability requirements of concrete type arguments

  shader-slang/slang#13893 · Filter by author kaizhangNV opened on Oct 23, 2026
  

• Investigate band-aid fixes for varying-parameter locations: IR passes and emitters must use the front-end layout

  shader-slang/slang#13892 · Filter by author nv-slang-bot opened on Oct 23, 2026
  

• [CI] test-slangpy-linux-aarch64: CUDA_ERROR_OUT_OF_MEMORY (cuMemAllocHost) in test_load_texture_from_bitmap

  CI Stability
  shader-slang/slang#13891 · Filter by author jkwak-work opened on Oct 23, 2026 · Q1 2027 (Winter)
  1

  

• Spurious candidates diagnosed for ambiguous variable name lookup

  reproduced
  Language Maturity

  shader-slang/slang#13888 · Filter by author skiminki-nv opened on Oct 23, 2026
  3

  

• Improve the compiler's representation of entry points

  shader-slang/slang#13882 · Filter by author tangent-vector opened on Oct 23, 2026
  

• Aligned immutable loads: incomplete pointer API and lost CUDA/D3D12 alignment

  reproducedRTR
  shader-slang/slang#13878 · Filter by author tdavidovicNV opened on Oct 22, 2026 · Q4 2026 (Fall)
  1