#ifndef VY_GFX_BACKEND_H
#define VY_GFX_BACKEND_H

/* Backend functions and types. */

#include <stddef.h>

#include "gfx.h"

#ifdef _WIN32
struct HINSTANCE__;
struct HWND__;
#endif

struct vy_renderer_init_info_s {
#ifdef _WIN32
    struct HINSTANCE__ *hInstance;
    struct HWND__ *hWnd;
#endif
};

typedef struct {
    const char *compute_source;
    size_t compute_source_length;
} vy_compute_pipeline_info;

typedef struct {
    const char *vertex_source;
    size_t vertex_source_length;

    const char *fragment_source;
    size_t fragment_source_length;
} vy_graphics_pipeline_info;

typedef int vy_init_renderer_fn(const vy_renderer_init_info *info);
typedef void vy_shutdown_renderer_fn(void);
typedef vy_gfx_pipeline_id
vy_compile_compute_pipeline_fn(const vy_compute_pipeline_info *info);
typedef vy_gfx_pipeline_id
vy_compile_graphics_pipeline_fn(const vy_graphics_pipeline_info *info);

typedef struct {
    vy_init_renderer_fn *Init;
    vy_shutdown_renderer_fn *Shutdown;
    vy_compile_compute_pipeline_fn *CompileComputePipeline;
    vy_compile_graphics_pipeline_fn *CompileGraphicsPipeline;
} vy_renderer_api;

#ifndef VY_DONT_DEFINE_RENDERER_GLOBAL
extern vy_renderer_api g_renderer;
#endif

#endif