0033 - DXIL 1.9
| Status | Under Review |
|---|---|
| Author | |
| Sponsor |
- Planned Version: SM 6.9
Introduction
Shader Model 6.9 introduces new features to HLSL which need representations in DXIL. This proposal provides an index of the new features:
Opacity Micromaps
Proposal 0024 - Opacity Micromaps (OMM)
This adds a new DXIL op, AllocateRayQuery2 and some new flags.
Shader Execution Reordering
Proposal 0027 - Shader Execution Reordering (SER)
This adds a new DXIL type, %dx.types.HitObject and 30 new DXIL ops.
DXIL Vectors
Proposal 0030 - DXIL Vectors
This enables native vectors, as supported by LLVM 3.7, in DXIL 1.9. A new
rawBufferVectorLoad opcode is added that loads an entire vector. Elementwise
intrinsics are extended to accept vector arguments.
The HLSL changes related to this feature can be found in Proposal 0026 - HLSL Long Vector Type.
16bit IsSpecialFloat
Proposal 0038 - 16bit IsSpecialFloat
The IsSpecialFloat DXIL Ops are used to implement operations, ‘isinf’, ‘isnan’, ‘isfinite’, and ‘isnormal’. Due to a bug (#7496), the IsSpecialFloat DXIL operations were never generated for 16-bit types. This bug is fixed for SM 6.9.