You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.2 KiB
88 lines
2.2 KiB
/*------------------------------------------------------------------------- |
|
* drawElements Quality Program Random Shader Generator |
|
* ---------------------------------------------------- |
|
* |
|
* Copyright 2014 The Android Open Source Project |
|
* |
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
|
* you may not use this file except in compliance with the License. |
|
* You may obtain a copy of the License at |
|
* |
|
* http://www.apache.org/licenses/LICENSE-2.0 |
|
* |
|
* Unless required by applicable law or agreed to in writing, software |
|
* distributed under the License is distributed on an "AS IS" BASIS, |
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
* See the License for the specific language governing permissions and |
|
* limitations under the License. |
|
* |
|
*//*! |
|
* \file |
|
* \brief Expression generator. |
|
*//*--------------------------------------------------------------------*/ |
|
|
|
#include "rsgExpressionGenerator.hpp" |
|
|
|
namespace rsg |
|
{ |
|
|
|
ExpressionGenerator::ExpressionGenerator (GeneratorState& state) |
|
: m_state(state) |
|
{ |
|
} |
|
|
|
ExpressionGenerator::~ExpressionGenerator (void) |
|
{ |
|
} |
|
|
|
Expression* ExpressionGenerator::generate (const ValueRange& valueRange, int initialDepth) |
|
{ |
|
// Create root |
|
m_state.setExpressionDepth(initialDepth); |
|
Expression* root = Expression::createRandom(m_state, valueRange); |
|
|
|
try |
|
{ |
|
// Generate full expression |
|
generate(root); |
|
} |
|
catch (const std::exception&) |
|
{ |
|
delete root; |
|
m_expressionStack.clear(); |
|
throw; |
|
} |
|
|
|
return root; |
|
} |
|
|
|
void ExpressionGenerator::generate (Expression* root) |
|
{ |
|
DE_ASSERT(m_expressionStack.empty()); |
|
|
|
// Initialize stack |
|
m_expressionStack.push_back(root); |
|
m_state.setExpressionDepth(m_state.getExpressionDepth()+1); |
|
|
|
// Process until done |
|
while (!m_expressionStack.empty()) |
|
{ |
|
DE_ASSERT(m_state.getExpressionDepth() <= m_state.getShaderParameters().maxExpressionDepth); |
|
|
|
Expression* curExpr = m_expressionStack[m_expressionStack.size()-1]; |
|
Expression* child = curExpr->createNextChild(m_state); |
|
|
|
if (child) |
|
{ |
|
m_expressionStack.push_back(child); |
|
m_state.setExpressionDepth(m_state.getExpressionDepth()+1); |
|
} |
|
else |
|
{ |
|
m_expressionStack.pop_back(); |
|
m_state.setExpressionDepth(m_state.getExpressionDepth()-1); |
|
} |
|
} |
|
} |
|
|
|
} // rsg
|
|
|