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Revision history for Shaderc

v2026.5-dev 2026-09-11

- Start development

v2026.4 2026-09-11

- Use Glslang 16.6.0, SPIRV-Tools v2026.4.rc2

- Incorporate fixes for SPV_KHR_abort abortEXT(...)

- glslc:

option -fshader-stage now accepts all shader

stage names as allowed in #pragma shader_stage(<stage>)>

This includes ray tracing, task, and mesh shader

stages.

- Fixes an assert

v2026.3 2026-07-15

- Deprecate HLSL compilation.

- Add build option SHADERC_ENABLE_HLSL to build Shaderc without

HLSL support.

v2026.2 2026-04-24

- Test GL_EXT_descriptor_heap

v2026.1 2026-01-23

- Update dependencies:

- Glslang 16.2.0

- SPIRV-Tools v2026.1rc1.

- SPIRV-Headers top of tree

Supports VK_EXT_descriptor_heap and other extensions.

- Require the CHANGES file to have a valid date on its version lines

This avoid the problem of stale version information in the

pkg-config configuration files.

v2025.5 2025-11-27

- Update dependencies

v2025.4 2025-09-25

- Update dependencies

- Add option to set max SPIR-V ID bound.

glslc: -fmax-id-bound

- CMake: Fix some install logic: when glslc is not built,

don't try to install it.

- Remove testing of VS 2019

v2025.3 2025-06-24

- Update dependencies

- CMake updates:

- Actually disable all tests when specified

- Add a way to disable building glslc

v2025.2 2025-04-23

- Update dependencies: Glslang, SPIRV-Tools, SPIRV-Headers

- Supports BFloat16 floating point types

v2025.1 2025-02-27

- Update tools and compilers tested:

- Clang 13

- GCC 13

- VisualStudio 2022

- CMake 3.31.2

- Python 3.12

- NDK r27c

- Skip version numbers to match SPIRV-Tools, to avoid

confusion.

v2024.4 2024-12-06

- Support Vulkan 1.4

v2024.3 2024-09-23

- Update dependencies: Glslang, SPRIV-Tools, SPIRV-Headers

- SPIRV-Tools is at v2024.4.rc1

- This incorporates a SPIRV-Tools fix which was limiting parallelism.

Validator friendly name generation was serializing on a mutex

protecting the locale object.

- During HLSL compilation or any optimizing compile, don't tell the

validator to use "friendly names". This should save time spent in the

initial validation step of the optimization recipe.

- Adapt test golden results to Glslang changes which reorder

decorations by object enum value.

- Fix ndk-build library dependencies: libshaderc_util depends on glslang

- Use Python 3.12 on Linux CI bots

- Fix Python 3.12 warnings for string escapes

v2024.2 2024-06-21

- Update dependencies:

Glslang: top of tree 2024-06-21

SPIRV-Header: top of tree 2024-06-21

SPIRV-Tools: v2024.3.rc1

- Build:

- Remove support for VS2017

v2024.1 2024-04-30

- Update dependencies

- Propagate test/install options to Glslang

v2024.0 2024-03-08

- Update dependencies

- Utilities:

- Use Python3 explicitly in utility scripts

v2023.8 2024-01-03

- API: Expose rlaxed Vulkan rules from glslang

- Update to Glslang 14.0.0

- CMake:

- Comply with CMP0148: Use PythonInterp

- Use TARGET_OBJECTS to simplify creating the shaderc_shared library.

v2023.7 2023-10-12

- Update dependencies

- Finish converting build instructions and flags to always use C++17

- Add GitHub CI to test more flows

v2023.6 2023-08-09

- Update dependencies, including SPIRV-Tools v2023.4.rc2

v2023.5 2023-07-19

- Update dependencies

- Update to Android NDK r25c

- Update Android API level for test project (#1333)

- For testing, add a dependency on Abseil's C++ library

- Fix MSVC runtime library linking in CMake (#1339)

v2023.4 2023-05-24

- Refresh Glslang, SPIRV-Tools, SPIRV-Headers

- Android.mk:

- Require NDK 21d or later

- Update scripts for generating the shared library, which

should fix Windows

- glslc and APIs:

- Add options to control mesh shading limits

v2023.3 2023-03-17

- Shaderc now requires C++17

- Drop support for VS 2015

- Add glslc option -fpreserve-bindings

- Refresh Glslang, SPIRV-Tools

v2023.2 2023-01-18

- Update DEPS to pull in SPIRV-Tools bugfix #5049

v2023.1 2023-01-13

- General/Build

- Removed support for GCC-based code coverage builds

- Update minimum CMake to 3.17.2

- Fix C++20 compatibility: explicitly construct string_piece when

comparing to `char*`

v2022.4 2022-11-30

- Update to Glslang 11

- Update SPIRV-Tools, SPIRV-Headers dependencies

- Add Cmake BUNDLE DESTINATION option for target install

- The code coverage build is no longer being tested

v2022.3 2022-10-12

- #1264: Implement defaults for SPV_EXT_mesh_shader builtins

- Update SPIRV-Tools to v2022.4

v2022.2 2022-08-11

- Require CMake 3.14 or later

- Support 16bit types in HLSL, via glslc option -fhlsl-16bit-types

and associated library API methods. PR #1251

- Update glslc tests for newer Glslang debug output

- Update SPIRV-Tools v2022.3 plus one patch

- Update SPIRV-Headers

v2022.1 2022-02-03

- Update DEPS to include two fixes on top of SPIRV-Tools v2022.1:

- Validator handles Nontemporal image operand

- Optimizer handles RayQueryKHR type

v2022.0 2022-01-27

- Update to Glslang 11.8.0

v2021.4 2022-01-27

- Support Vulkan 1.3

- Support targeting SPIR-V 1.6, which is the default for Vulkan 1.3

- Updated copyright check: Excludes Glslang generated files when

building in source tree

- Fix Android.mk rules for building libshaderc_combined, to adapt to more

recent NDKs that have removed the GNU binutils.

v2021.3 2021-11-11

- Add build switch to disable copyright check

- Update DEPS:

- SPIRV-Tools v2021.4

- SPIRV-Headers GitHub master 2021-11-11

- Glslang GitHub master 2021-11-11

v2021.2 2021-08-25

- README: Mention Common Lisp bindings (external)

- Update DEPS:

- SPIRV-Tools v2021.3

- SPIRV-Headers master 2021-08-25

- Glslang GitHub master 2021-08-25

v2021.1 2021-06-21

- Disable --target-env=opengl_compat with an explicit error message

- It has been deprecated for a long time.

v2021.0 2021-04-21

- Refresh dependencies (in DEPS):

- SPIRV-Tools v2021.1

- SPIRV-Headers snapshot 2021-04-21

- Glslang 11.2.0, snapshot 2021-04-21

- Fixes:

#1174: Windows Bazel support: rename internal headers io.* to io_shaderc.*

v2020.5 2021-02-19

- Refresh dependencies (in DEPS):

- SPIRV-Tools v2020.7 + 1 patch

- Glslang 11.1.0

- Add option to skip building examples

- Fixes:

#1153: Improve file+line parsing from Glslang messages

v2020.4 2020-12-09

- Removed svpc

- Fixed issues with embedders getting duplicate symbols

- Converted C-style casts to static_cast

- Rolled ahead to fix/pickup Vulkan Raytracing support

v2020.3 2020-09-02

- General:

- Last release with spvc

- Cleaned up issues discovered by Infer

- spvc:

- Added support for Dawn using deprecated Options constructor

- Adding support for the additional fixed sample mask in MSL

v2020.2 2020-07-23

- General:

- Remove VS2013 support

- Support both posix and non-posix MinGW toolchains

- Support optionally building Tint tooling for WGSL

- Add -h option to glslc, spvc; same as --help

- Add source file license checker

- BUILD.gn improvements

- glslc, libshaderc:

- Update to Glslang generator 9

- Add interface to support 16bit types in HLSL

- Add glslc hidden experimental option -mfmt=wgsl; requires Tint

- spvc:

- Add minimum buffer size for Dawn reflection

v2020.1 2020-06-09

This is the last version that officially supports VS2013.

- General:

- Added warning signs about unsupported downloads (#1041)

- Added .NET bindings to README.md (#1060)

- Only add -fPIC if supported by the compiler. (#1061)

- glslc, libshaderc:

- Removed Singleton pattern around access to glslang (#1059)

- spvc:

- Added concept of comparison sampler to API (#1036)

- Added support for options.hlsl.nonwritable_uav_texture_as_srv (#1048)

- Support forcing storage buffers to be always declared as UAV. (#1076)

v2020.0 2020-03-06

- General:

- Getting spirv.hpp from SPIRV-Headers instead of not glslang (#992)

- Added clarification about status of artifacts in downloads.md (#1012)

- glslc, libshaderc:

- Added support for new Glslang profile enum, EProfileCount (#973)

- Updated user documentation for -S in glslc (#978)

- Add documentation for Vulkan 1.2 and SPIR-V 1.5 (#980)

- Removed NV_EXTENSIONS conditionals (#1003)

- Added support for generating WebGPU SPIR-V to libshaderc (#1021)

- Rolled in all DEPS for provisional SPIR-V extensions for raytracing

- spvc:

- Normalized API behaviour (#967)

- Added source_set target for libshaderc_spvc (#976)

- Added in support for spvc logging to the terminal (#981)

- Internal refactoring to reduce boiler plate in API implementations (#984)

- Added newline to logging messages to make them readable (#985)

- Added reflection support for Dawn:

- storage textures (#1001)

- storage texture format (#1005)

- texture dimension for storage textures (#1008)

- is storage texture declared as multisampled texture (#1011)

- Converted compile options to require explicit environments (#1019)

- Added knob to control force_zero_initialized_variables in SPIRV-Cross (#1028)

v2019.1 2020-01-22

- glslc, libshaderc:

- Add -fnan-clamp: Generate code for max and min builtins so that,

given a NaN operand, will return the other operand. Similarly, the

clamp builtin favours non-NaN operands, as if clamp was implemented

as the composition of max and min.

- Add -finvert-y

- Using SetBeforeHlslLegalization for more relaxed validation rules

- Added support for SPIR-V 1.5

- Add --emit-line-directive option

- Added support for Vulkan 1.2

- spvc:

- Add many options:

--flatten-multidimensional-arrays

--es

--no-es

--glsl-emit-push-constant-as-ubo

--msl-swizzle-texture-samples

--msl-platform=ios|macos

--msl-pad-fragment-output

--msl-capture-output

--msl-domain-lower-left

--msl-argument-buffers

--msl-discrete-descriptor-set=<number>

--hlsl-enable-compat

- Reintroduce shaderc_spvc_compile_options_set_shader_model

- Added option to inject robust buffer access code

- Added support for emitting ToVulkan shaders

- Added spirv-opt based IR generation as alternative to built in spirv_cross IR gen

- Added API for specifying source and target execution environments

- Added option & reflection API methods neede by Dawn

- Substantial internal refactoring and code cleanup

- Large number of breaking changes to the API

- Replaced shaderc_spvc_compile_options_set_shader_model with

shaderc_spvc_compile_options_set_hlsl_shader_model

- Compiler initialization and shader generation moved into seperate calls

- Seperated return codes from shaderc ones

- Many small API changes

- Improvements to testing

- Refactoring and clean up of run_spirv_cross_tests.py

- Seperation of expectations into known failures, known invalids, and cases

that need investigation

- Tweaks and fixes to substantially increase passing cases

- Added support for running tests using spvc IR generation

- Infrastructure

- Update DEPS with cross-verified commits from associated repos.

- Add utils/roll-deps

- Infrastructure:

- Removed Appveyor artifacts link

- Improvements and clean up of DEPS rolling scripts

- Enabled warnings about implicit fallthrough

- Enabled improper semicolon warnings

- Restricted -fPIC to platforms that support it

- Converted remaining scripts to use Python 3

- Replaced nosetest with unittest

- Removed assumptions aabout location of spirv-tools, effcee, and RE2

- Migrated BUILD.gn spirv_cross dependency to local repo

- Fixes:

- Fix duplicate install paths when using VisualStudio

- Fixed BUILD.gn for Chromium, Dawn & Fuchsia

- Explicitly enabled HLSL support in glslang

- Added installing necessary headers in Android.mk

- Removed unsupported Unicode characters

- Fixed detection of spirv-headers directory

#666: Update Docker file to use Python3

v2019.0 2019-06-04

- Add optional spvc, libshaderc_spvc as wrapper around SPIRV-Cross:

- Rejects bad modules by running the SPIR-V validator first

- Skips exception-heavy SPIRV-Cross SPIR-V parser

- Support NV extensions for shader stages

- Require SPIRV-Tools and SPIRV-Headers with SPIR-V 1.4 support

Build support:

- Use KhronosGroup/glslang instead of google/glslang

- Stop running tests on VS 2013 (googletest no longer supports VS2013)

- Require Python3 for building

- Support Chromium's GN build system

- Kokoro build fixes

- Cmake build fixes: Only build subdirs if those targets are not yet defined

- Use Android.mk from Glslang

- Dockerfile gets re2 and effcee sources

- Fixes for newer googletest

- Add address sanitizer presubmit bot

- Generate config files for pkg-config

Spvc:

- Add option to specify source environment. Spvc will transform from source

to target environment if they are different. This only works for WebGPU0

and Vulkan 1.1.

Fixes:

#499: In HLSL compilation, relax layout and logical pointer validation rules

prior to running the legalization recipe.

v2018.0 2018-10-01

- Support -fhlsl_functionality1 (also -fhlsl-functionality1)

- Support NVIDIA Turing extensions. Requires updated Glslang and SPIRV-Tools.

- Use SPIR-V optimization and HLSL legalization recipes from SPIRV-Tools.

- Pass target environment into SPIRV-Tools code, e.g. from --target-env vulkan1.1

- Add SONAME=1 property to shared library

- Support GN build for Chromium

Fixes:

#469: Add virtual dtor to classes with virtual functions.

#457: Fix writing SPIR-V binaries to standard output on Windows.

v2017.2 2018-02-27

- Add a shared library version of libshaderc

- Support GLSL 4.6 and ESSL 3.2

- Fail compilation if a resource does not have a binding.

- Add options for automatically setting bindings for (uniform) resources that

don't have bindings set in shader source.

- Add options for automatically setting locations for pipline inputs and outputs.

- Add option for using HLSL IO mappings as expressed in source.

- Add options for setting resource binding base numbers.

- Add option to use HLSL resource register numbers for bindings.

- HLSL compilation now defaults to HLSL packing rules.

(This change is inherited from Glslang commit 7cca140.)

- HLSL compilation runs SPIR-V "legalization" transforms to reduce

manipulation of opaque handles (e.g. images), to satisfy Vulkan rules.

- Adapt to Glslang generator version numbers:

- To 2: a fix for code generation for atomicCounterDecrement.

- To 3: change memory barrier semantics masks

- To 4: generate more access chains for swizzles

- CMake install rules uses GNUInstallDirs. For example, install to lib64

when that is the norm for the target system.

v2017.1 2017-03-10

- Add option to automatically assign bindings to uniform variables

that don't have an explicit 'binding' layout in the shader source.

- Enable NVIDIA extensions by default in GLSL compilation

- README mentions language bindings provided by 3rd parties.

- README describes the known-good branch on GitHub

- Fixed examples in shaderc.h; added C API use to examples/online-compile

- Fixes issues:

#289: Don't output an object file when compilation fails.

#296: Enable use of the CMake in Android Studio.

v2016.2 2016-12-13

- Describe Shaderc's level of stability.

- Support HLSL compilation, exposing functionality in Glslang.

- Supported in C, C++ API

- glslc accepts "-x hlsl", and assumes .hlsl files are HLSL.

- glslc accepts "-fentry-point=<name>" to set entry point name,

overriding default value "main".

- Support setting shader resource limits in C, C++ APIs, and in

glslc

- glslc adds -flimit=<setting>

- glslc adds --show-limits to display defaults and valid resource

limit syntax.

- glslc adds "-flimit-file <file>" support to read Glslang resource

configuration files, i.e. the output of "glslangValidator -c".

- Enable AMD extensions by default in GLSL compilation

- Fixes issues:

#281: Work around Android build issue with abspath on Windows

#283: Increase default maxDrawBuffers to 4, to match Vulkan/GLES3.0

v2016.1 2016-10-12

- C API for assembling now takes an options object

- Support compilation options to optimize for size.

- Maintain compatibility with recent SPIRV-Tools and Glslang versions.

- Update examples.

- Build cleanups.

- Fixes issues:

#238: Fix invocation of python scripts during build

v2016.0 2016-07-07

- Adds v<year>.<index> versioning, with "-dev" suffix to indicate work in

progress. The intent is to summarize and report functionalities more easily

for incorporating into downstream projects.

- Summary of functionalities (See the README.md for more details):

- Provides libraries and command line tools for generating SPIR-V modules

- Supports GLSL source code or SPIR-V assembly as input

- Supports SPIR-V binary or assembly text as output

- Command line options follow GCC/Clang conventions

- Supports various semantics (OpenGL, OpenGL Compatible and Vulkan)

- Supports #include

- Supports user-defined macros

- Supports dependency information dumping

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