Add UniformExternalSize function

src/libGLESv2/utilities.cpp

@@ -140,6 +140,11 @@ size_t UniformInternalSize(GLenum type)
     return UniformComponentSize(UniformComponentType(type)) * UniformInternalComponentCount(type);
 }
 
+size_t UniformExternalSize(GLenum type)
+{
+    return UniformComponentSize(UniformComponentType(type)) * UniformExternalComponentCount(type);
+}
+
 int VariableRowCount(GLenum type)
 {
     switch (type)

src/libGLESv2/utilities.h

@@ -25,6 +25,7 @@ int UniformExternalComponentCount(GLenum type);
 int UniformInternalComponentCount(GLenum type);
 GLenum UniformComponentType(GLenum type);
 size_t UniformInternalSize(GLenum type);
+size_t UniformExternalSize(GLenum type);
 int VariableRowCount(GLenum type);
 int VariableColumnCount(GLenum type);