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In the hull shader, the PCF output does not participate in an argument list, so has no defined ordering. It is always put at the end of the linkage. That means the DS input reading PCF data must be be at the end of the DS linkage as well, no matter where it may appear in the argument list. This change makes sure that happens. The detection is by looking for arguments that contain tessellation factor builtins, even as a struct member. The whole struct is taken as the PCF output if any members are so qualified.
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.