Issues

• a.b < x || a.b > (y) parsed as generic application on member access, error E39999 "expected a generic when using '<...>'"

  reproduced
  Bug

  shader-slang/slang#13426 · Filter by author andy-slater opened on Oct 4, 2026
  1

• Missing constant folding for loops

  Dev OpenedreproducedSPIR-V
  Performance

  shader-slang/slang#13424 · Filter by author juliusikkala opened on Oct 4, 2026
  1

• Buffer layout controls don't apply to Metal constant buffers

  Metalreproduced
  Feature

  shader-slang/slang#13423 · Filter by author mellinoe opened on Oct 3, 2026
  1

  

• False-positive E41035 for Conditional initialized and read under the same condition

  Dev OpenedDiagnosticsregressionreproduced
  Bug

  shader-slang/slang#13420 · Filter by author pdeayton-nv opened on Oct 3, 2026
  1

  

• Conditional resource loses bindings and reflection when its condition uses an extern enum

  Dev Openedreflectionreproduced
  Bug

  shader-slang/slang#13419 · Filter by author pdeayton-nv opened on Oct 3, 2026
  1

  

• SPIR-V: storing the address of a structured-buffer element in a Ptr<float> struct field fails spirv-val

  reproducedSPIR-V
  Bug

  shader-slang/slang#13418 · Filter by author nv-slang-bot opened on Oct 2, 2026

• CPU/CUDA: storing the address of a column-major matrix buffer element in a Ptr<float2x3> struct field fails to compile

  cudareproduced
  Bug

  shader-slang/slang#13417 · Filter by author nv-slang-bot opened on Oct 2, 2026

• GLSL: bab.Store of a pointer, or an ignored call returning a pointer, is silently dropped

  GLSLreproduced
  Bug

  shader-slang/slang#13414 · Filter by author nv-slang-bot opened on Oct 2, 2026
  1

  

• Store-to-load forwarding through a pointer crosses calls that may write it (wrong value in direct SPIR-V; forwarded constant on all targets)

  reproduced
  Bug

  shader-slang/slang#13412 · Filter by author nv-slang-bot opened on Oct 2, 2026
  1

• Generated IR reference still describes the old __isVector fold after #13357

  shader-slang/slang#13411 · Filter by author nv-slang-bot opened on Oct 2, 2026

• Metal: groupshared load moved across GroupMemoryBarrierWithGroupSync (data race in generated MSL)

  Metalreproduced
  Bug

  shader-slang/slang#13409 · Filter by author girivs82 opened on Oct 2, 2026
  1

  

• Metal: RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH dropped by _slang_ray_flags_to_intersection_params

  Metalreproduced
  Bug

  shader-slang/slang#13408 · Filter by author girivs82 opened on Oct 2, 2026
  1

  

• -emit-spirv-via-glsl: pointer stores into a buffer_reference field fail spirv-val (VUID-06314) because bundled glslang predates KhronosGroup/glslang#4123

  GLSLreproduced
  Bug

  shader-slang/slang#13407 · Filter by author nv-slang-bot opened on Oct 2, 2026

• CPU/CUDA: passing &local float2x3 to a Ptr<float2x3> parameter emits C++ that fails to compile under the column-major default (regression)

  cudaregressionreproduced
  Bug

  shader-slang/slang#13405 · Filter by author nv-slang-bot opened on Oct 2, 2026
  1

  

• slangc segfaults (stack overflow in canIgnoreType) on a local of a struct that is mutually recursive through pointers

  reproduced
  Bug

  shader-slang/slang#13404 · Filter by author nv-slang-bot opened on Oct 2, 2026
  1

  

• GLSL target: a pointer loaded from memory is read after that memory is overwritten

  GLSLreproduced
  Bug

  shader-slang/slang#13403 · Filter by author nv-slang-bot opened on Oct 2, 2026
  1

  

• WGSL: a Ptr<T> stored in a struct or cbuffer is emitted as invalid ptr<, T> (no address space, and WGSL forbids pointer struct members)

  reproducedWebGPU
  Bug

  shader-slang/slang#13399 · Filter by author nv-slang-bot opened on Oct 2, 2026

• Use pointer-only buffer references for the CUDA backend

  cudaDev OpenedRTR
  Feature

  shader-slang/slang#13397 · Filter by author skallweitNV opened on Oct 2, 2026
  1

• C-like targets (GLSL, HLSL, Metal, CUDA, C++, WGSL): a struct containing a pointer to itself aborts with "circularity during codegen"

  cudaGLSLMetalreproducedWebGPU
  Bug

  shader-slang/slang#13396 · Filter by author nv-slang-bot opened on Oct 2, 2026
  2

  

• Overload choice depends on an earlier inout call: the per-module conversion-cost cache ignores l-value-ness

  regressionreproduced
  Bug

  shader-slang/slang#13394 · Filter by author nv-slang-bot opened on Oct 2, 2026
  1

  

• GLSL target: storing through a pointer assigns to the pointer instead of its _data member

  GLSLreproduced
  Bug

  shader-slang/slang#13393 · Filter by author nv-slang-bot opened on Oct 2, 2026
  3

  

• Exposing constexpr variables to host through Slang API

  Feature

  shader-slang/slang#13392 · Filter by author julcst opened on Oct 2, 2026
  3

• WGSL-via-tint wgsl-spirv-asm skips std140 uniform layout: cbuffer scalar array emitted with stride 4

  reproducedWebGPU
  Bug

  shader-slang/slang#13391 · Filter by author nv-slang-bot opened on Oct 2, 2026
  2

  

• Explicit matrix layout before a modern-syntax declaration is dropped when the type is an array of matrices

  reproduced
  Bug

  shader-slang/slang#13390 · Filter by author nv-slang-bot opened on Oct 2, 2026
  2

• HLSL target: AppendStructuredBuffer/ConsumeStructuredBuffer of a bare matrix type emits HLSL that DXC rejects (or crashes slangc)

  reproduced
  Bug

  shader-slang/slang#13388 · Filter by author nv-slang-bot opened on Oct 2, 2026