gl_time_query.h

#pragma once
 
#include <cgv/render/texture.h>
 
#include "lib_begin.h"
 
namespace cgv {
    namespace render {
        namespace gl {

class CGV_API gl_time_query
{
private:
    context* ctx_ptr = nullptr;
    unsigned int query = 0;
 
public:
    mutable std::string last_error;

    gl_time_query();
    ~gl_time_query();

    bool init(context& ctx);
    void destruct(context& ctx);
    bool is_initialized() const;

    void begin_scope() const;
    void end_scope() const;
    double collect() const;

    inline double end_scope_and_collect() const {
        end_scope();
        return collect();
    }

    [[deprecated("Use begin_scope() instead, which does the exact same thing, but is named more clearly and fits better with the new way of using gl_time_query.")]]
    void begin() const;
    [[deprecated("This method blocks the calling thread until the scoped commands finish executing. Use end_scope() and collect() instead.")]]
    double end() const;
};
 
        } // namespace cgv
    } // namespace render
} // namespace gl
 
#include <cgv/config/lib_end.h>