mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
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4a4322983f
Remove DrawRegistry from osd layer and put a simple shader caching utility into examples/common. osd layer only provides patch shader snippet and let client configure and compile the code. Clients also maintain the lifetime of shader object, which is preferable for the actual application integration. update all examples to use the new scheme.
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
//
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// Copyright 2015 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#ifndef OPENSUBDIV_EXAMPLES_SHADER_CACHE_H
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#define OPENSUBDIV_EXAMPLES_SHADER_CACHE_H
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#include <map>
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template <typename DESC_TYPE, typename CONFIG_TYPE>
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class ShaderCacheT {
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public:
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typedef DESC_TYPE DescType;
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typedef CONFIG_TYPE ConfigType;
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typedef std::map<DescType, ConfigType *> ConfigMap;
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virtual ~ShaderCacheT() {
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Reset();
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}
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void Reset() {
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for (typename ConfigMap::iterator it = _configMap.begin();
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it != _configMap.end(); ++it) {
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delete it->second;
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}
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_configMap.clear();
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}
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// fetch shader config
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ConfigType * GetDrawConfig(DescType const & desc) {
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typename ConfigMap::iterator it = _configMap.find(desc);
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if (it != _configMap.end()) {
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return it->second;
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} else {
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ConfigType * config = CreateDrawConfig(desc);
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if (config) {
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_configMap[desc] = config;
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}
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return config;
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}
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}
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virtual ConfigType *CreateDrawConfig(DescType const &desc) = 0;
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private:
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ConfigMap _configMap;
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};
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#endif // OPENSUBDIV_EXAMPLES_SHADER_CACHE_H
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