v0.6 2024-03-11
This document covers the new Shader Model 6.8. A brief summary of each new feature is listed below along with links to detailed specifications.
Work Graphs define a system of shader nodes that feed into each other to enable tailored GPU work creation.
See the Work Graphs documentation for more details.
Several existing operations have been expanded to support Comparison Samplers.
New methods: SampleCmpBias, SampleCmpGrad.
Added overloads: CalculateLevelOfDetail, CalculateLevelOfDetailUnclamped.
See the Expanded Comparison Sampling documentation for more details.
Two new system-value semantics are required to be supported in HLSL shader model 6.8:
SV_StartVertexLocation - Reports StartVertexLocation from DrawInstanced() or BaseVertexLocation from DrawIndexedInstanced() to a vertex shader.SV_StartInstanceLocation - Reports StartInstanceLocation From Draw*Instanced to a vertex shader.See the Extended Command Information documentation for more details.
A new variant of the WaveSize attribute is added: [WaveSize( min, max [, preferred] )].
This allows you to specify a range and optional preferred size.
See the Wave Size Range documentation for more details.
| Version | Date | Description |
|---|---|---|
| 0.1 | 29 Jun 2021 | Initial draft outline |
| 0.2 | 20 Oct 2021 | Update spec links |
| 0.3 | 24 Aug 2022 | Add WaveMMA spec link |
| 0.4 | 01 May 2023 | Update included elements |
| 0.5 | 21 Jun 2023 | Update for preview release |
| 0.6 | 11 Mar 2024 | Remove WaveMMA; remove experimental; add Expanded Comparison Sampling, Extended Command Information, and Wave Size Range |