fb53f83503
Use of gl_Layer and gl_ViewportIndex in tessellation and vertex shaders should not trigger the addition of the Geometry capability. Fixes #2461 Added tests for use of gl_Layer and gl_ViewportIndex in a tessellation evaluation shader. Several tests for NVIDIA features for tessellation, vertex, or mesh shaders now lose the Geometry or MultiViewport capabilities. This is ok because the functionality is already covered by the ShaderViewportIndexLayerNV capability. The spv.meshShaderPerViewBuiltins.mesh test now fails validation because the validator does not know that PrimitiveId (and possibly other) builtins are enabled by the MeshShadingNV capability. I filed https://github.com/KhronosGroup/SPIRV-Headers/issues/179 to fix the grammar upstream.
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.