shader.h

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#ifndef ION_GFX_SHADER_H_
#define ION_GFX_SHADER_H_

#include <string>

#include "ion/base/referent.h"
#include "ion/gfx/resourceholder.h"

namespace ion {
namespace gfx {

class ION_API ShaderBase : public ResourceHolder {
 public:
  void SetDocString(const std::string& s) { doc_string_ = s; }
  const std::string& GetDocString() const { return doc_string_; }

  void SetInfoLog(const std::string& info_log) const {
    info_log_ = info_log;
  }
  const std::string GetInfoLog() const { return info_log_; }

 protected:
  ShaderBase();

  ~ShaderBase() override;

 private:
  std::string doc_string_;

  mutable std::string info_log_;
};

class ION_API Shader : public ShaderBase {
 public:
  enum Changes {
    kSourceChanged = kNumBaseChanges,
    kNumChanges
  };

  Shader();
  explicit Shader(const std::string& source);

  void SetSource(const std::string& source) {
    source_.Set(source);
  }
  const std::string& GetSource() const {
    return source_.Get();
  }

 private:
  ~Shader() override;

  Field<std::string> source_;
};

typedef base::ReferentPtr<Shader>::Type ShaderPtr;

}  // namespace gfx
}  // namespace ion

#endif  // ION_GFX_SHADER_H_