transform_feedback.hpp

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#ifndef GLK_TRANSFORM_FEEDBACK_HPP
#define GLK_TRANSFORM_FEEDBACK_HPP
 
#include <iostream>
#include <GL/gl3w.h>
#include <glk/drawable.hpp>
 
namespace glk {
 
class TransformFeedback : public glk::Drawable {
public:
  TransformFeedback(size_t buffer_size, GLenum usage = GL_STATIC_DRAW);
  ~TransformFeedback();
 
  GLuint id() const;
 
  void bind();
  void unbind();
 
  void read_data(intptr_t offset, size_t size, void* data);
 
  virtual void draw(glk::GLSLShader& shader) const override;
 
private:
  GLuint feedback;
  GLuint tbo;
};
}  // namespace glk
 
#endif