#pragma once
// The renderer process (t5de-renderer.exe, 64-bit) an engine draws through: started with the engine, told about
// each frame through a shared memory channel (include/t5de/protocol/channel.hpp), and told to exit with it.

#include <windows.h>

#include <cstdint>
#include <memory>

#include "t5de/protocol/channel.hpp"

namespace t5de {

class RendererProcess {
public:
    // Starts t5de-renderer.exe from this DLL's folder, drawing into window; null if it can't.
    static std::unique_ptr<RendererProcess> start(HWND window);

    RendererProcess(const RendererProcess&) = delete;
    RendererProcess& operator=(const RendererProcess&) = delete;
    ~RendererProcess();

    // The client drew a frame.
    void frameDrawn();

private:
    RendererProcess() = default;

    HANDLE mapping_ = nullptr;
    HANDLE frameEvent_ = nullptr;
    HANDLE process_ = nullptr;
    protocol::Channel* channel_ = nullptr;
};

} // namespace t5de