Platform: take into account Flag::VerboseLog in WindowlessEglApplication.

The app does its own EGL-specific verbose printing and thus should
recognize this option the same way as GL::Context does. Right now it was
only taking into account the command-line parameters and not the new
Configuration.

src/Magnum/Platform/Test/WindowlessEglApplicationTest.cpp

@@ -38,12 +38,17 @@ WindowlessEglApplicationTest::WindowlessEglApplicationTest(const Arguments& argu
     Utility::Arguments args;
     args.addSkippedPrefix("magnum", "engine-specific options")
         .addBooleanOption("quiet").setHelp("quiet", "like --magnum-log quiet, but specified via a Context::Configuration instead")
+        .addBooleanOption("verbose").setHelp("verbose", "like --magnum-log verbose, but specified via a Context::Configuration instead")
         .addBooleanOption("gpu-validation").setHelp("gpu-validation", "like --magnum-gpu-validation, but specified via a Context::Configuration instead")
         .parse(arguments.argc, arguments.argv);
 
     Configuration conf;
     if(args.isSet("quiet"))
         conf.addFlags(Configuration::Flag::QuietLog);
+    /* Additional EGL-specific output is printed by the app, verify we take
+       the Configuration option into account as well, not just command line */
+    if(args.isSet("verbose"))
+        conf.addFlags(Configuration::Flag::VerboseLog);
     if(args.isSet("gpu-validation"))
         conf.addFlags(Configuration::Flag::GpuValidation);
     createContext(conf);

src/Magnum/Platform/WindowlessEglApplication.cpp

@@ -102,7 +102,9 @@ WindowlessEglContext::WindowlessEglContext(const Configuration& configuration, G
     /* Otherwise find the display and initialize EGL */
     {
         #ifndef MAGNUM_TARGET_WEBGL
-        const bool displayVerboseLog = magnumContext && (magnumContext->configurationFlags() >= GL::Context::Configuration::Flag::VerboseLog);
+        /* Display verbose log if specified either on command line or in
+           Configuration but not if the command line overrides it to be quiet */
+        const bool displayVerboseLog = ((configuration.flags() & Configuration::Flag::VerboseLog) && (!magnumContext || !(magnumContext->configurationFlags() & GL::Context::Configuration::Flag::QuietLog))) || (magnumContext && (magnumContext->configurationFlags() >= GL::Context::Configuration::Flag::VerboseLog));
 
         /* If relevant extensions are supported, try to find some display using
            those APIs, as that works reliably also when running headless. This