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Required for linking against libSPIRV-Tools from LVL's libVkLayer_core_validation.so. Signed-off-by: Chris Forbes <chrisforbes@google.com> |
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external | ||
include | ||
source | ||
test | ||
tools | ||
utils | ||
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.gitignore | ||
.travis.yml | ||
CMakeLists.txt | ||
LICENSE | ||
README.md | ||
syntax.md |
SPIR-V Tools
Overview
The SPIR-V Tools project provides an API and commands for processing SPIR-V modules.
The project includes an assembler, binary module parser, disassembler, and validator for SPIR-V, all based on a common static library. The library contains all of the implementation details, and is used in the standalone tools whilst also enabling integration into other code bases directly.
The interfaces are still under development, and are expected to change.
SPIR-V is defined by the Khronos Group Inc. See the SPIR-V Registry for the SPIR-V specification, headers, and XML registry.
Supported features
Assembler, binary parser, and disassembler
- Based on SPIR-V 1.0 Revision 3.
- Supports GLSL std450 extended instructions.
- Supports OpenCL extended instructions.
- Assembler only does basic syntax checking. No cross validation of
IDs or types is performed, except to check literal arguments to
OpConstant
,OpSpecConstant
, andOpSwitch
.
See syntax.md
for the assembly language syntax.
Validator
Warning: The validator is incomplete.
Source code
The SPIR-V Tools are maintained by members of the The Khronos Group Inc., at https://github.com/KhronosGroup/SPIRV-Tools.
Contributions via merge request are welcome. Changes should:
- Be provided under the Khronos license.
- Include tests to cover updated functionality.
- C++ code should follow the Google C++ Style Guide.
- Code should be formatted with
clang-format
. Settings are defined by the included .clang-format file.
We intend to maintain a linear history on the GitHub master
branch.
Source code organization
external/googletest
: Intended location for the googletest sources, not providedinclude/
: API clients should add this directory to the include search pathinclude/spirv-tools/libspirv.h
: C API public interfaceinclude/spirv/
: Contains header files from the SPIR-V Registry, required by the public API.source/
: API implementationtest/
: Tests, using the googletest framework.tools/
: Command line executables
Tests
The project contains a number of tests, used to drive development
and ensure correctness. The tests are written using the
googletest framework. The googletest
source is not provided with this project. There are two ways to enable
tests:
- If SPIR-V Tools is configured as part of an enclosing project, then the
enclosing project should configure
googletest
before configuring SPIR-V Tools. - If SPIR-V Tools is configured as a standalone project, then download the
googletest
source into the<spirv-dir>/external/googletest
directory before configuring and building the project.
Note: You must use a version of googletest that includes a fix for googletest issue 610. The fix is included on the googletest master branch any time after 2015-11-10. In particular, googletest must be newer than version 1.7.0.
Build
The project uses CMake to generate platform-specific build configurations. To generate these build files, issue the following commands:
mkdir <spirv-dir>/build
cd <spirv-dir>/build
cmake [-G <platform-generator>] <spirv-dir>
Once the build files have been generated, build using your preferred development environment.
CMake options
The following CMake options are supported:
SPIRV_COLOR_TERMINAL={ON|OFF}
, defaultON
- Enables color console output.SPIRV_SKIP_EXECUTABLES={ON|OFF}
, defaultOFF
- Build only the library, not the command line tools. This will also prevent the tests from being built.SPIRV_USE_SANITIZER=<sanitizer>
, default is no sanitizing - On UNIX platforms with an appropriate version ofclang
this option enables the use of the sanitizers documented here. This should only be used with a debug build.SPIRV_WARN_EVERYTHING={ON|OFF}
, defaultOFF
- On UNIX platforms enable more strict warnings. The code might not compile with this option enabled. For Clang, enables-Weverything
. For GCC, enables-Wpedantic
. SeeCMakeLists.txt
for details.SPIRV_WERROR={ON|OFF}
, defaultON
- Forces a compilation error on any warnings encountered by enabling the compiler-specific compiler front-end option.
Library
Usage
The library provides a C API, but the internals use C++11.
In order to use the library from an application, the include path should point to
<spirv-dir>/include
, which will enable the application to include the header
<spirv-dir>/include/libspirv/libspirv.h
then linking against the static
library in <spirv-build-dir>/libSPIRV-Tools.a
or
<spirv-build-dir>/SPIRV-Tools.lib
.
SPIRV-Tools
CMake target: Creates the static library:<spirv-build-dir>/libSPIRV-Tools.a
on Linux and OS X.<spirv-build-dir>/libSPIRV-Tools.lib
on Windows.
Entry points
The interfaces are still under development, and are expected to change.
There are three main entry points into the library.
spvTextToBinary
: An assembler, translating text to a binary SPIR-V module.spvBinaryToText
: A disassembler, translating a binary SPIR-V module to text.spvBinaryParse
: The entry point to a binary parser API. It issues callbacks for the header and each parsed instruction. The disassembler is implemented as a client ofspvBinaryParse
.spvValidate
implements the validator functionality. Incomplete
Command line tools
Command line tools, which wrap the above library functions, are provided to
assemble or disassemble shader files. It's a convention to name SPIR-V
assembly and binary files with suffix .spvasm
and .spv
, respectively.
Assembler tool
The assembler reads the assembly language text, and emits the binary form.
The standalone assembler is the exectuable called spirv-as
, and is located in
<spirv-build-dir>/spirv-as
. The functionality of the assembler is implemented
by the spvTextToBinary
library function.
spirv-as
- the standalone assembler<spirv-dir>/spirv-as
Use option -h
to print help.
Disassembler tool
The disassembler reads the binary form, and emits assembly language text.
The standalone disassembler is the executable called spirv-dis
, and is located in
<spirv-build-dir>/spirv-dis
. The functionality of the disassembler is implemented
by the spvBinaryToText
library function.
spirv-dis
- the standalone disassembler<spirv-dir>/spirv-dis
Use option -h
to print help.
The output includes syntax colouring when printing to the standard output stream, on Linux, Windows, and OS X.
Validator tool
Warning: This functionality is under development, and is incomplete.
The standalone validator is the executable called spirv-val
, and is located in
<spirv-build-dir>/spirv-val
. The functionality of the validator is implemented
by the spvValidate
library function.
The validator operates on the binary form.
spirv-val
- the standalone validator<spirv-dir>/spirv-val
Tests
Tests are only built when googletest is found.
The <spirv-build-dir>/UnitSPIRV
executable runs the project tests.
It supports the standard googletest
command line options.
The project also adds a CMake test spirv-tools-testsuite
, which executes
UnitSPIRV
. That way it's possible to run the tests using ctest
.
Future Work
Assembler and disassembler
- The disassembler could emit helpful annotations in comments. For example:
- Use variable name information from debug instructions to annotate key operations on variables.
- Show control flow information by annotating
OpLabel
instructions with that basic block's predecessors.
- Error messages could be improved.
Validator
This is a work in progress.
Licence
Copyright (c) 2015-2016 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Materials.
MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
https://www.khronos.org/registry/
THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.