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Externals: Add glslang from Vulkan SDK v1.0.21.1

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Stenzek
2016-06-26 15:06:20 +10:00
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Externals/glslang/gtests/README.md vendored Normal file
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Glslang Tests based on the Google Test Framework
================================================
This directory contains [Google Test][gtest] based test fixture and test
cases for glslang.
Apart from typical unit tests, necessary utility methods are added into
the [`GlslangTests`](TestFixture.h) fixture to provide the ability to do
file-based integration tests. Various `*.FromFile.cpp` files lists names
of files containing input shader code in the `Test/` directory. Utility
methods will load the input shader source, compile them, and compare with
the corresponding expected output in the `Test/baseResults/` directory.
How to run the tests
--------------------
Please make sure you have a copy of [Google Test][gtest] checked out under
the `External` directory before building. After building, just run the
`ctest` command or the `gtests/glslangtests` binary in your build directory.
The `gtests/glslangtests` binary also provides an `--update-mode` command
line option, which, if supplied, will overwrite the golden files under
the `Test/baseResults/` directory with real output from that invocation.
This serves as an easy way to update golden files.
[gtest]: https://github.com/google/googletest