[Fix, Test] (MG_State, MG_Backend/DirectGLES, MG_Util, MG_IntegrationTest, MG_Test): array layout(binding=N) elements bind consecutively, a read+write image reaches ESSL legally, compute local_size comes from the linked intermediate, and glShaderStorageBlockBinding is baked into the generated source

MobileGL/MG_Test/CMakeLists.txt

@@ -78,6 +78,9 @@ add_subdirectory(Query)
 add_subdirectory(Pipeline)
 add_subdirectory(ShaderTranspiler)
 add_subdirectory(Util)
+# The DirectGLES post-transpile ESSL passes are pure String -> String, so unlike the
+# DirectVulkan suite below this one needs no device and always builds.
+add_subdirectory(Backend/DirectGLES)
 if (ENABLE_INTEGRATION_TESTS)
     add_subdirectory(Backend/DirectVulkan)
 endif()