TGraphFunctionCall* TDependencyGraph::createFunctionCall(TIntermAggregate* intermFunctionCall)
{
TGraphFunctionCall* functionCall = new TGraphFunctionCall(intermFunctionCall);
mAllNodes.push_back(functionCall);
if (functionCall->getIntermFunctionCall()->isUserDefined())
mUserDefinedFunctionCalls.push_back(functionCall);
return functionCall;
}
void RestrictFragmentShaderTiming::validateUserDefinedFunctionCallUsage(const TDependencyGraph& graph)
{
for (TFunctionCallVector::const_iterator iter = graph.beginUserDefinedFunctionCalls();
iter != graph.endUserDefinedFunctionCalls();
++iter)
{
TGraphFunctionCall* functionCall = *iter;
beginError(functionCall->getIntermFunctionCall());
mSink << "A call to a user defined function is not permitted.\n";
}
}
bool TCompiler::limitExpressionComplexity(TIntermNode* root)
{
TIntermTraverser traverser;
root->traverse(&traverser);
TDependencyGraph graph(root);
for (TFunctionCallVector::const_iterator iter = graph.beginUserDefinedFunctionCalls();
iter != graph.endUserDefinedFunctionCalls();
++iter)
{
TGraphFunctionCall* samplerSymbol = *iter;
TDependencyGraphTraverser graphTraverser;
samplerSymbol->traverse(&graphTraverser);
}
if (traverser.getMaxDepth() > maxExpressionComplexity) {
infoSink.info << "Expression too complex.";
return false;
}
return true;
}