build 191224. opengl 3.3 renderer material glossiness support, minor bug fixes

gl/shader.cpp

@@ -69,7 +69,8 @@ std::unordered_map<std::string, gl::shader::defaultparam_e> gl::shader::defaultp
     { "one", defaultparam_e::one },
     { "ambient", defaultparam_e::ambient },
     { "diffuse", defaultparam_e::diffuse },
-    { "specular", defaultparam_e::specular }
+    { "specular", defaultparam_e::specular },
+    { "glossiness", defaultparam_e::glossiness }
 };
 
 void gl::shader::process_source(std::string &str)

gl/shader.h

@@ -44,7 +44,8 @@ namespace gl
             one,
             ambient,
             diffuse,
-            specular
+            specular,
+            glossiness
         };
 
         struct param_entry