DirectX Shader Compiler Redistributable Package

This package contains a copy of the DirectX Shader Compiler redistributable and its associated development headers.

For help getting started, please see:

https://github.com/microsoft/DirectXShaderCompiler/wiki

Licenses

The included licenses apply to the following files:

License file	Applies to
LICENSE-MS.txt	dxil.dll (if included in package)
LICENSE-MIT.txt	d3d12shader.h
LICENSE-LLVM.txt	all other files

Changelog

Version 1.7.2308

DX Compiler release for August 2023

• HLSL 2021 is now enabled by default
• Various HLSL 2021 fixes have been made to
  • Operator overloading fixes
  • Templates fixes
  • Select() with samplers
  • Bitfields show in reflections
  • Bitfields can be used on enums
  • Allow function template default params
• Issues with loading and using Linux binaries have been resolved
• Support #pragma region/endregion
• Various stability and diagnostic improvements
• Dxcapi.h inline documentation is improved
• Linking of libraries created by different compilers is disallowed to prevent interface Issues
• Inout parameter correctness improved

The package includes dxc.exe, dxcompiler.dll, corresponding lib and headers, and dxil.dll for x64 and arm64 platforms on Windows. The package also includes Linux version of the compiler with corresponding executable, libdxcompiler.so, corresponding headers, and libdxil.so for x64 platforms.

The new DirectX 12 Agility SDK (Microsoft.Direct3D.D3D12 nuget package) and a hardware driver with appropriate support are required to run shader model 6.7 shaders. Please see https://aka.ms/directx12agility for details.

The SPIR-V backend of the compiler has been enabled in this release.

Version 1.7.2212

DX Compiler release for December 2022.

• Includes full support of HLSL 2021 for SPIRV generation as well as many HLSL 2021 fixes and enhancements:
  • HLSL 2021's and, or and select intrinsics are now exposed in all language modes. This was done to ease porting codebases to HLSL2021, but may cause name conflicts in existing code.
  • Improved template utility with user-defined types
  • Many additional bug fixes
• Linux binaries are now included. This includes the compiler executable, the dynamic library, and the dxil signing library.
• New flags for inspecting compile times:
  • -ftime-report flag prints a high level summary of compile time broken down by major phase or pass in the compiler. The DXC command line will print the output to stdout.
  • -ftime-trace flag prints a Chrome trace json file. The output can be routed to a specific file by providing a filename to the arguent using the format -ftime-trace=<filename>. Chrome trace files can be opened in Chrome by loading the built-in tracing tool at chrome://tracing. The trace file captures hierarchial timing data with additional context enabling a much more in-depth profiling experience.
  • Both new options are supported via the DXC API using the DXC_OUT_TIME_REPORT and DXC_OUT_TIME_TRACE output kinds respectively.
• IDxcPdbUtils2 enables reading new PDB container part
• -P flag will now behave as it does with cl using the file specified by -Fi or a default
• Unbound multidimensional resource arrays are allowed
• Diagnostic improvements
• Reflection support on non-Windows platforms; minor updates adding RequiredFeatureFlags to library function reflection and thread group size for AS and MS.

The package includes dxc.exe, dxcompiler.dll, corresponding lib and headers, and dxil.dll for x64 and arm64 platforms on Windows. For the first time the package also includes Linux version of the compiler with corresponding executable, libdxcompiler.so, corresponding headers, and libdxil.so for x64 platforms.

The new DirectX 12 Agility SDK (Microsoft.Direct3D.D3D12 nuget package) and a hardware driver with appropriate support are required to run shader model 6.7 shaders. Please see https://aka.ms/directx12agility for details.

The SPIR-V backend of the compiler has been enabled in this release. Please note that Microsoft does not perform testing/verification of the SPIR-V backend.

Version 1.7.2207

DX Compiler release for July 2022. Contains shader model 6.7 and many bug fixes and improvements, such as:

• Features: Shader Model 6.7 includes support for Raw Gather, Programmable Offsets, QuadAny/QuadAll, WaveOpsIncludeHelperLanes, and more!
• Platforms: ARM64 support
• HLSL 2021 : Enable “using” keyword
• Optimizations: Loop unrolling and dead code elimination improvements
• Developer tools: Improved disassembly output

The package includes dxc.exe, dxcompiler.dll, corresponding lib and headers, and dxil.dll for x64 and, for the first time, arm64 platforms!

The new DirectX 12 Agility SDK (Microsoft.Direct3D.D3D12 nuget package) and a hardware driver with appropriate support are required to run shader model 6.7 shaders. Please see https://aka.ms/directx12agility for details.

The SPIR-V backend of the compiler has been enabled in this release. Please note that Microsoft does not perform testing/verification of the SPIR-V backend.