#ifndef VY_GFX_H
#define VY_GFX_H

#include <stdint.h>

/* graphics system. this is the interface of the rendering code.
 *
 * we need (at least) three different renderers:
 * - world cell renderer (for world & dungeon environments)
 * - character renderer (for animated models)
 * - object renderer (for static models)
 */

#include <stdbool.h>

bool vyInitRenderer(void);

void vyShutdownRenderer(void);

/* Generational indices for backend objects */
typedef struct {
    uint32_t index;
} vy_gfx_pipeline_id;

#define VY_IS_GFX_ID_VALID(id) ((id).index != 0)

/* Attributes are used to bind buffers (or textures) to symbolic values.
 * For example, an attribute might be bound to "CELL_GRID", which would be
 * replaced with the (at the time of the invoke) grid buffer of the current
 * world cell.
 */

typedef enum {
    VY_ATTRIBUTE_VALUE_UNDEFINED,

    VY_ATTRIBUTE_VALUE_MATERIAL_ALBEDO,
} vy_attribute_value;

typedef struct {
    uint32_t index;
    vy_attribute_value value;
} vy_attribute_binding;

typedef struct {
    vy_attribute_binding *uniform_bindings;
    vy_attribute_binding *storage_bindings;
    vy_attribute_binding *texture_bindings;

    vy_gfx_pipeline_id pipeline;

    unsigned int uniform_binding_count;
    unsigned int storage_binding_count;
    unsigned int texture_binding_count;
} vy_shader;

#endif