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//
// Copyright 2015 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef OPENSUBDIV_EXAMPLES_SHADER_CACHE_H
#define OPENSUBDIV_EXAMPLES_SHADER_CACHE_H
#include <map>
template <typename DESC_TYPE, typename CONFIG_TYPE>
class ShaderCacheT {
public:
typedef DESC_TYPE DescType;
typedef CONFIG_TYPE ConfigType;
typedef std::map<DescType, ConfigType *> ConfigMap;
virtual ~ShaderCacheT() {
Reset();
}
void Reset() {
for (typename ConfigMap::iterator it = _configMap.begin();
it != _configMap.end(); ++it) {
delete it->second;
}
_configMap.clear();
}
// fetch shader config
ConfigType * GetDrawConfig(DescType const & desc) {
typename ConfigMap::iterator it = _configMap.find(desc);
if (it != _configMap.end()) {
return it->second;
} else {
ConfigType * config = CreateDrawConfig(desc);
if (config) {
_configMap[desc] = config;
}
return config;
}
}
virtual ConfigType *CreateDrawConfig(DescType const &desc) = 0;
private:
ConfigMap _configMap;
};
#endif // OPENSUBDIV_EXAMPLES_SHADER_CACHE_H
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