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 FunctionGenerator(GeneratorState & state,Function & function)32FunctionGenerator::FunctionGenerator(GeneratorState &state, Function &function) : m_state(state), m_function(function) 33 { 34 } 35 ~FunctionGenerator(void)36FunctionGenerator::~FunctionGenerator(void) 37 { 38 } 39 generate(void)40void FunctionGenerator::generate(void) 41 { 42 std::vector<Statement *> statementStack; 43 44 // Initialize 45 m_state.setStatementStack(statementStack); 46 statementStack.push_back(&m_function.getBody()); 47 m_function.getBody().init(m_state); 48 49 // Process until statement stack is empty 50 while (!statementStack.empty()) 51 { 52 DE_ASSERT((int)statementStack.size() <= m_state.getShaderParameters().maxStatementDepth); 53 54 Statement *curStatement = statementStack.back(); 55 Statement *childStatement = curStatement->createNextChild(m_state); 56 57 if (childStatement) 58 statementStack.push_back(childStatement); 59 else 60 statementStack.pop_back(); 61 } 62 63 // Create assignments if variables have bound value range 64 for (vector<Variable *>::iterator i = m_requiredAssignments.begin(); i != m_requiredAssignments.end(); i++) 65 { 66 Variable *variable = *i; 67 const ValueEntry *entry = m_state.getVariableManager().getValue(variable); 68 ValueRange valueRange(variable->getType()); 69 70 valueRange.getMin() = entry->getValueRange().getMin().value(); 71 valueRange.getMax() = entry->getValueRange().getMax().value(); 72 73 // Remove value entry from this scope. After this entry ptr is invalid. 74 m_state.getVariableManager().removeValueFromCurrentScope(variable); 75 76 if (!isUndefinedValueRange(valueRange.asAccess())) 77 m_function.getBody().addChild(new AssignStatement(m_state, variable, valueRange.asAccess())); 78 } 79 } 80 81 } // namespace rsg 82