1 /*------------------------------------------------------------------------- 2 * drawElements Quality Program Random Shader Generator 3 * ---------------------------------------------------- 4 * 5 * Copyright 2014 The Android Open Source Project 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 * 19 *//*! 20 * \file 21 * \brief Expression generator. 22 *//*--------------------------------------------------------------------*/ 23 24 #include "rsgFunctionGenerator.hpp" 25 #include "rsgUtils.hpp" 26 27 using std::vector; 28 29 namespace rsg 30 { 31 32 FunctionGenerator::FunctionGenerator (GeneratorState& state, Function& function) 33 : m_state (state) 34 , m_function (function) 35 { 36 } 37 38 FunctionGenerator::~FunctionGenerator (void) 39 { 40 } 41 42 void FunctionGenerator::generate (void) 43 { 44 std::vector<Statement*> statementStack; 45 46 // Initialize 47 m_state.setStatementStack(statementStack); 48 statementStack.push_back(&m_function.getBody()); 49 m_function.getBody().init(m_state); 50 51 // Process until statement stack is empty 52 while (!statementStack.empty()) 53 { 54 DE_ASSERT((int)statementStack.size() <= m_state.getShaderParameters().maxStatementDepth); 55 56 Statement* curStatement = statementStack.back(); 57 Statement* childStatement = curStatement->createNextChild(m_state); 58 59 if (childStatement) 60 statementStack.push_back(childStatement); 61 else 62 statementStack.pop_back(); 63 } 64 65 // Create assignments if variables have bound value range 66 for (vector<Variable*>::iterator i = m_requiredAssignments.begin(); i != m_requiredAssignments.end(); i++) 67 { 68 Variable* variable = *i; 69 const ValueEntry* entry = m_state.getVariableManager().getValue(variable); 70 ValueRange valueRange(variable->getType()); 71 72 valueRange.getMin() = entry->getValueRange().getMin().value(); 73 valueRange.getMax() = entry->getValueRange().getMax().value(); 74 75 // Remove value entry from this scope. After this entry ptr is invalid. 76 m_state.getVariableManager().removeValueFromCurrentScope(variable); 77 78 if (!isUndefinedValueRange(valueRange)) 79 m_function.getBody().addChild(new AssignStatement(m_state, variable, valueRange)); 80 } 81 } 82 83 } // rsg 84
