Test Shader compilation with WEBMIN flag (#1638)

Use a generated shader to check no mandatory glsl function missing in
spirv-cross when using WEBMIN flag.

BabylonJS/SPIRV-Cross#10

## Fix

`UniformTypeChangeTraverser` and `MoveNonSamplerUniformsIntoStruct` were
also visiting whole `layout(std140) uniform` blocks (`EbtBlock`) and
`uniform Foo foo;` struct instances (`EbtStruct`) and rewriting them to
`vec4`, producing unnamed placeholder uniforms in the spirv-cross output
and a `Identifier can't be empty.` assert in bgfx. Both traversers are
now restricted to scalar/vector basic types (Float/Int/Uint/Bool).
`CollectNonSamplerUniforms` also throws early if a uniform name is empty
so future regressions surface in the compiler instead of deep in bgfx.

Author: CedricGuillemet

Apps/UnitTests/CMakeLists.txt

@@ -12,14 +12,19 @@ set(BABYLONJS_MATERIALS_ASSETS
 
 set(TEST_ASSETS
     "JavaScript/dist/tests.javaScript.all.js"
-    "JavaScript/dist/tests.shaderCache.basicScene.js")
+    "JavaScript/dist/tests.shaderCache.basicScene.js"
+    "JavaScript/dist/tests.shaders.cross.js")
+
+file(GLOB TEST_SCRIPTS "JavaScript/src/*.ts")
+set_source_files_properties(${TEST_SCRIPTS} PROPERTIES HEADER_FILE_ONLY TRUE)
 
 set(SOURCES
     "Source/App.h"
     "Source/App.cpp"
     "Source/Tests.ExternalTexture.cpp"
     "Source/Tests.JavaScript.cpp"
     "Source/Tests.ShaderCache.cpp"
+    "Source/Tests.ShaderCompilation.cpp"
     "Source/Tests.UniformPadding.cpp"
     "Source/Utils.h"
     "Source/Utils.${GRAPHICS_API}.${BABYLON_NATIVE_PLATFORM_IMPL_EXT}")
@@ -46,7 +51,7 @@ elseif(WIN32)
     set(SOURCES ${SOURCES} "Source/App.Win32.cpp")
 endif()
 
-add_executable(UnitTests ${BABYLONJS_ASSETS} ${BABYLONJS_MATERIALS_ASSETS} ${TEST_ASSETS} ${SOURCES})
+add_executable(UnitTests ${BABYLONJS_ASSETS} ${BABYLONJS_MATERIALS_ASSETS} ${TEST_ASSETS} ${TEST_SCRIPTS} ${SOURCES})
 target_link_libraries(UnitTests
     PRIVATE AppRuntime
     PRIVATE Blob
@@ -94,3 +99,4 @@ source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${SOURCES})
 source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/../node_modules/babylonjs PREFIX Assets FILES ${BABYLONJS_ASSETS})
 source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/../node_modules/babylonjs-materials PREFIX Assets FILES ${BABYLONJS_MATERIALS_ASSETS})
 source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/JavaScript/dist PREFIX Assets FILES ${TEST_ASSETS})
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/JavaScript/src PREFIX TypeScript FILES ${TEST_SCRIPTS})