env_manager.h

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#ifndef ENV_MANAGER_H
#define ENV_MANAGER_H
 
#include "app_settings.h"
#include "async_loader.h"
#include "gl_common.h"
#include "ibl_coordinator.h"
#include "postprocess.h"
 
// Forward declarations
typedef struct Scene Scene;
 
typedef struct EnvManager {
    int env_map_loading;      
    int env_map_loading_step; 
    AsyncRequest
        current_env_req; 
    TransitionState transition_state;
    float transition_alpha;
    float transition_duration;
    int is_first_load;
    int env_transition_mode; 
    GLuint pending_env_tex;  
} EnvManager;
 
int env_manager_load(EnvManager* mgr, AsyncLoader* loader,
                     const char* filename);
 
void env_manager_process_loading_step(EnvManager* mgr, GLuint* recycled_hdr_tex,
                                      IBLCoordinator* ibl);
 
int env_manager_trigger_transition(EnvManager* mgr, AsyncLoader* loader,
                                   const char* filename);
 
void env_manager_update_ibl(EnvManager* mgr, Scene* scene,
                            PostProcess* postproc, uint64_t frame_count,
                            int width, int height);
 
void env_manager_update_transition(EnvManager* mgr, Scene* scene,
                                   PostProcess* postproc, double delta_time,
                                   uint64_t frame_count);
 
void env_manager_render_overlay(const EnvManager* mgr, const Scene* scene);
 
#endif /* ENV_MANAGER_H */