ShaderManager.h

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#pragma once
 
#include "vapor/IResourceManager.h"
#include "vapor/ShaderProgram.h"
#include <string>
#include <vector>
 
namespace VAPoR {
 
 
class RENDER_API ShaderManager : public IResourceManager<std::string, ShaderProgram> {
    std::map<std::string, std::map<string, long>> _dependencyModifiedTimes;
 
    std::vector<std::string>        _getSourceFilePaths(const std::string &name) const;
    bool                            _wasFileModified(const std::string &path) const;
    static std::string              _getNameFromKey(const std::string &key);
    static std::vector<std::string> _getDefinesFromKey(const std::string &key);
 
public:
    ShaderProgram *    GetShader(const std::string &name);
    SmartShaderProgram GetSmartShader(const std::string &name);
    int                LoadResourceByKey(const std::string &key);
 
    static Shader *CompileNewShaderFromFile(const std::string &path, const std::vector<std::string> &defines = {});
 
    static unsigned int GetShaderTypeFromPath(const std::string &path);
 
    static std::string              PreProcessShader(const std::string &path, const std::vector<std::string> &defines = {});
    static std::vector<std::string> GetShaderDependencies(const std::string &path);
};
 
}    // namespace VAPoR