09caf12bec
Previously GlslangToSpv() reported missing/TBD functionalities by directly writing to stdout using printf. That could cause problems to callers of GlslangToSpv(). This patch cleans up the error reporting logic in GlslangToSpv(), TGlslangToSpvTraverser, and spv::Builder a little bit to use ostringstream. Also fixed the usage of GlslangToSpv() in GTest fixtures to capture warnings/errors reported when translating AST to SPIR-V.
Glslang Tests based on the Google Test Framework
This directory contains Google Test based test fixture and test cases for glslang.
Apart from typical unit tests, necessary utility methods are added into
the GlslangTests 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 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.