Esempio n. 1
0
        /// <summary>
        /// Replace the append methods
        /// </summary>
        /// <param name="entryPoint">the entrypoint method</param>
        /// <param name="replacor">the visitor</param>
        private void ReplaceAppendMethod(MethodDefinition entryPoint, ParadoxReplaceAppend replacor)
        {
            replacor.Run(entryPoint);

            List<StreamUsageInfo> nextMethods;
            if (streamsUsages.TryGetValue(entryPoint, out nextMethods))
                nextMethods.Where(x => x.CallType == StreamCallType.Method).Select(x => x.MethodDeclaration as MethodDefinition).Where(x => x != null).ToList().ForEach(x => ReplaceAppendMethod(x, replacor));
        }
Esempio n. 2
0
        /// <summary>
        /// Generates a stream structure and add them to the Ast - for the geometry shader
        /// </summary>
        /// <param name="entryPoint">the entrypoint function</param>
        /// <param name="streamStageUsage">the stream usage in this stage</param>
        /// <param name="stageName">the name of the stage</param>
        /// <param name="prevOuputStructure">the output structutre from the previous stage</param>
        /// <returns>the new output structure</returns>
        private StructType GenerateStreamsWithSpecialDataInput(MethodDefinition entryPoint, StreamStageUsage streamStageUsage, string stageName, StructType prevOuputStructure)
        {
            if (entryPoint != null)
            {
                var inStreamStruct = prevOuputStructure ?? CreateStreamStructure(streamStageUsage.InStreamList, stageName + "_INPUT");
                var outStreamStruct = CreateStreamStructure(streamStageUsage.OutStreamList, stageName + "_OUTPUT");

                var mixin = entryPoint.GetTag(ParadoxTags.ShaderScope) as ModuleMixin;

                var intermediateStreamStruct = CreateIntermediateStructType(streamStageUsage, stageName);

                // put the streams declaration at the beginning of the method body
                var streamsDeclaration = new DeclarationStatement(new Variable(new TypeName(intermediateStreamStruct.Name), "streams") { InitialValue = new CastExpression { From = new LiteralExpression(0), Target = new TypeName(intermediateStreamStruct.Name) } });
                entryPoint.Body.Insert(0, streamsDeclaration);

                // add the declaration statements to the entrypoint and fill with the values
                var outputStatements = CreateOutputFromStream(outStreamStruct, "output", intermediateStreamStruct, "streams").ToList();
                var outputVre = new VariableReferenceExpression(((outputStatements.First() as DeclarationStatement).Content as Variable).Name);

                var replacor = new ParadoxReplaceAppend(streamAnalyzer.AppendMethodCalls, outputStatements, outputVre);
                ReplaceAppendMethod(entryPoint, replacor);
                
                var visitedMethods = new Stack<MethodDeclaration>();
                var inStructType = new TypeName(inStreamStruct.Name);
                var outStructType = new TypeName(outStreamStruct.Name);
                RecursiveRename(entryPoint, inStructType, null, outStructType, null, visitedMethods);

                // explore all the called functions
                var streamsVisitedMethods = new HashSet<MethodDeclaration>();
                var methodsWithStreams = new List<MethodDeclaration>();
                PropagateStreamsParameter(entryPoint, inStreamStruct, intermediateStreamStruct, outStreamStruct, streamsVisitedMethods, methodsWithStreams);

                CheckCrossStageMethodCall(streamStageUsage.ShaderStage, methodsWithStreams);

                if (prevOuputStructure == null)
                    shader.Members.Insert(0, inStreamStruct);
                shader.Members.Insert(0, outStreamStruct);
                shader.Members.Insert(0, intermediateStreamStruct);

                return outStreamStruct;
            }

            return prevOuputStructure;
        }