OpenGLRenderer: remove opengl32 dependency on Linux

src/Nazara/OpenGLRenderer/Wrapper/EGL/EGLLoader.cpp

@@ -19,7 +19,7 @@
 
 namespace Nz::GL
 {
-	EGLLoader::EGLLoader(DynLib& /*openglLib*/)
+	EGLLoader::EGLLoader()
 	{
 		if (!m_eglLib.Load("libEGL"))
 			throw std::runtime_error("failed to load gdi32.dll: " + m_eglLib.GetLastError());

src/Nazara/OpenGLRenderer/Wrapper/WGL/WGLLoader.cpp

@@ -9,10 +9,12 @@
 
 namespace Nz::GL
 {
-	WGLLoader::WGLLoader(DynLib& openglLib) :
-	m_opengl32Lib(openglLib),
+	WGLLoader::WGLLoader() :
 	m_baseContext(nullptr, *this)
 	{
+		if (!m_opengl32Lib.Load("opengl32" NAZARA_DYNLIB_EXTENSION))
+			throw std::runtime_error("Failed to load opengl32 library, is OpenGL installed on your system?");
+
 		if (!m_gdi32Lib.Load("gdi32.dll"))
 			throw std::runtime_error("failed to load gdi32.dll: " + m_gdi32Lib.GetLastError());