blob: 32248d9b332806802deb6eb2c46e1ed8d474a5c4 [file] [log] [blame]
/*-------------------------------------------------------------------------
* 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 "rsgFunctionGenerator.hpp"
#include "rsgUtils.hpp"
using std::vector;
namespace rsg
{
FunctionGenerator::FunctionGenerator(GeneratorState &state, Function &function) : m_state(state), m_function(function)
{
}
FunctionGenerator::~FunctionGenerator(void)
{
}
void FunctionGenerator::generate(void)
{
std::vector<Statement *> statementStack;
// Initialize
m_state.setStatementStack(statementStack);
statementStack.push_back(&m_function.getBody());
m_function.getBody().init(m_state);
// Process until statement stack is empty
while (!statementStack.empty())
{
DE_ASSERT((int)statementStack.size() <= m_state.getShaderParameters().maxStatementDepth);
Statement *curStatement = statementStack.back();
Statement *childStatement = curStatement->createNextChild(m_state);
if (childStatement)
statementStack.push_back(childStatement);
else
statementStack.pop_back();
}
// Create assignments if variables have bound value range
for (vector<Variable *>::iterator i = m_requiredAssignments.begin(); i != m_requiredAssignments.end(); i++)
{
Variable *variable = *i;
const ValueEntry *entry = m_state.getVariableManager().getValue(variable);
ValueRange valueRange(variable->getType());
valueRange.getMin() = entry->getValueRange().getMin().value();
valueRange.getMax() = entry->getValueRange().getMax().value();
// Remove value entry from this scope. After this entry ptr is invalid.
m_state.getVariableManager().removeValueFromCurrentScope(variable);
if (!isUndefinedValueRange(valueRange.asAccess()))
m_function.getBody().addChild(new AssignStatement(m_state, variable, valueRange.asAccess()));
}
}
} // namespace rsg