Require GLSL functions to be declared before use

diff --git a/source/glsl/validate.cpp b/source/glsl/validate.cpp
index 91d1de991515dc74dbb359d0385a0429ef855803..1458d01eaaba8743d40e90bb9b030790dca3cad9 100644 (file)
--- a/source/glsl/validate.cpp
+++ b/source/glsl/validate.cpp
@@ -236,6 +236,13 @@ void ReferenceValidator::visit(InterfaceBlockReference &iface)
                error(iface, format("Use of unlinked input block '%s'", iface.name));
 }
 
+void ReferenceValidator::visit(FunctionCall &call)
+{
+       if(!call.declaration && !call.constructor)
+               error(call, format("Call to undeclared function '%s'", call.name));
+       TraversingVisitor::visit(call);
+}
+
 void ReferenceValidator::visit(VariableDeclaration &var)
 {
        if(!var.type_declaration)

diff --git a/source/glsl/validate.h b/source/glsl/validate.h
index a8c6f11c6a8e12602431abb6fd22a93b280e55fd..35cc049c8d0809edbb007cca63b35d42e560e483 100644 (file)
--- a/source/glsl/validate.h
+++ b/source/glsl/validate.h
@@ -82,6 +82,7 @@ private:
        virtual void visit(VariableReference &);
        virtual void visit(MemberAccess &);
        virtual void visit(InterfaceBlockReference &);
+       virtual void visit(FunctionCall &);
        virtual void visit(VariableDeclaration &);
        virtual void visit(InterfaceBlock &);
        virtual void visit(FunctionDeclaration &);