[DEV] add have texture in material

ege/Material.cpp

@@ -66,6 +66,10 @@ void ege::Material::draw(ememory::SharedPtr<gale::resource::Program> _prog, cons
 	EGE_VERBOSE("draw Material: ( end )");
 }
 
+bool ege::Material::haveTexture() const {
+	return m_texture0 != null;
+}
+
 void ege::Material::setAmbientFactor(const vec4& _val) {
 	m_ambientFactor = _val;
 }

ege/Material.hpp

@@ -56,6 +56,7 @@ namespace ege {
 			egami::Image* get();
 			// flush the data to send it at the openGl system
 			void flush();
+			bool haveTexture() const;
 	};
 }