DirectX Shader Compiler
The DirectX Shader Compiler project includes a compiler and related tools used to compile High-Level Shader Language (HLSL) programs into DirectX Intermediate Language (DXIL) for DirectX and the Standard Portable Intermediate Representation (SPIR-V) for Vulkan.
Applications that make use of DirectX or Vulkan for graphics, games, and computation can use it to generate shader program binaries.
For more information, see the Wiki.
Visit the DirectX Landing Page for more resources for DirectX developers, or the Vulkan homepage for resources for Vulkan developers.
Pre-built binaries
Officially supported binary release for the DirectX Shader Compiler are available:
Features and Goals
The starting point of the project is a fork of the LLVM and Clang projects, modified to accept HLSL and emit a validated shader binary that can be consumed by GPU drivers.
At the moment, the DirectX Shader Compiler releases provide the following components:
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dxc.exe, a command-line tool that can compile HLSL programs for shader model 6.0 or higher
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dxcompiler.[dll|so], a DLL providing a componentized compiler, assembler, disassembler, and validator
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dxil.[dll|so], a DLL providing the DXIL validation and hashing support
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dxv.exe, a command-line tool that validates DXIL IR (compiled HLSL programs)
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A collection of C++ headers for working with the contained dynamic libraries
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A collection of HLSL headers exposing useful high level abstractions
The Microsoft Windows SDK releases include a supported version of the compiler and validator.
The goal of the project is to allow the broader community of shader developers to contribute to the language and representation of shader programs, maintaining the principles of compatibility and supportability for the platform. It’s currently in active development across two axes: language evolution (with no impact to DXIL representation), and surfacing hardware capabilities (with impact to DXIL, and thus requiring coordination with GPU implementations).
Pre-built Releases
Development kits containing only the dxc.exe driver app, the dxcompiler.dll, and the dxil.dll signing binary are available here, or in the releases tab.
SPIR-V CodeGen
As an example of community contribution, this project can also target the SPIR-V intermediate representation. Please see the doc for how HLSL features are mapped to SPIR-V, and the wiki page for how to build, use, and contribute to the SPIR-V CodeGen.
When built from source DXC can utilize the Metal Shader
Converter if it is
available during build and configuration time. This allows DXC to generate Metal
shader libraries directly using the -metal flag.
Note: DXC cannot currently disassemble Metal shaders so the -Fc flag cannot be
used in conjunction with the -Fo flag.
Building Sources
See the full documentation for Building and testing DXC for detailed instructions.
Running Shaders
To run shaders compiled as DXIL, you will need support from the operating system as well as from the driver for your graphics adapter. Windows 10 Creators Update is the first version to support DXIL shaders. See the Wiki for information on using experimental support or the software adapter.
Hardware Support
Hardware GPU support for DXIL is provided by the following vendors:
NVIDIA
NVIDIA’s r396 drivers (r397.64 and later) provide release mode support for DXIL
1.1 and Shader Model 6.1 on Win10 1709 and later, and experimental mode support
for DXIL 1.2 and Shader Model 6.2 on Win10 1803 and later. These drivers also
support DXR in experimental mode.
Drivers can be downloaded from geforce.com.
AMD
AMD’s driver (Radeon Software Adrenalin Edition 18.4.1 or later) provides release mode support for DXIL 1.1 and Shader Model 6.1. Drivers can be downloaded from AMD’s download site.
Intel
Intel’s 15.60 drivers (15.60.0.4849 and later) support release mode for DXIL 1.0 and Shader Model 6.0 as well as
release mode for DXIL 1.1 and Shader Model 6.1 (View Instancing support only).
Drivers can be downloaded from the following link Intel Graphics Drivers
Direct access to 15.60 driver (latest as of this update) is provided below:
Installer
Release Notes related to DXIL
Making Changes
To make contributions, see the CONTRIBUTING.md file in this project.
Documentation
You can find documentation for this project in the docs directory. These contain the original LLVM documentation files, as well as two new files worth nothing:
License
DirectX Shader Compiler is distributed under the terms of the University of Illinois Open Source License.
See LICENSE.txt and ThirdPartyNotices.txt for details.
Code of Conduct
This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.
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