Make it possible to run GL tests on Windows/EGL.

CMakeLists.txt

@@ -189,8 +189,13 @@ if(BUILD_GL_TESTS)
         set(WITH_WINDOWLESSGLXAPPLICATION ON)
         set(GL_TEST_LIBRARIES Magnum MagnumWindowlessGlxApplication)
     elseif(CORRADE_TARGET_WINDOWS)
-        set(WITH_WINDOWLESSWGLAPPLICATION ON)
-        set(GL_TEST_LIBRARIES Magnum MagnumWindowlessWglApplication)
+        if(NOT MAGNUM_TARGET_GLES OR MAGNUM_TARGET_DESKTOP_GLES)
+            set(WITH_WINDOWLESSWGLAPPLICATION ON)
+            set(GL_TEST_LIBRARIES Magnum MagnumWindowlessWglApplication)
+        else()
+            set(WITH_WINDOWLESSWINDOWSEGLAPPLICATION ON)
+            set(GL_TEST_LIBRARIES Magnum MagnumWindowlessWindowsEglApplication)
+        endif()
     else()
         message(FATAL_ERROR "Cannot run tests for OpenGL code on this platform. Set BUILD_GL_TESTS to OFF to skip building them.")
     endif()

src/Magnum/Test/AbstractOpenGLTester.h

@@ -37,8 +37,12 @@
 #elif defined(CORRADE_TARGET_UNIX) && (!defined(MAGNUM_TARGET_GLES) || defined(MAGNUM_TARGET_DESKTOP_GLES))
 #include "Magnum/Platform/WindowlessGlxApplication.h"
 #elif defined(CORRADE_TARGET_WINDOWS)
+#if !defined(MAGNUM_TARGET_GLES) || defined(MAGNUM_TARGET_DESKTOP_GLES)
 #include "Magnum/Platform/WindowlessWglApplication.h"
 #else
+#include "Magnum/Platform/WindowlessWindowsEglApplication.h"
+#endif
+#else
 #error cannot run OpenGL tests on this platform
 #endif
 
@@ -101,7 +105,7 @@ std::optional<Platform::WindowlessApplication::Arguments> AbstractOpenGLTester::
     }                                                                       \
     int main(int argc, char** argv) {                                       \
         Magnum::Test::AbstractOpenGLTester::_windowlessApplicationArguments.emplace(argc, argv, nullptr); \
-        return Magnum::Platform::WindowlessWglApplication::create(windowProcedure); \
+        return Magnum::Platform::WindowlessApplication::create(windowProcedure); \
     }
 #endif