#ifndef _PIUMA_RENDER_OBJECT_H_
#define _PIUMA_RENDER_OBJECT_H_

#include "primitives.h"
#include "shader.h"

struct r_material
{
	// @Feature: PBR materials
	r_shader *shader;

	r_texture *albedo_texture;
	v4         albedo_factor;

	r_texture *metallic_texture;
	f32        metallic_factor;

	r_texture *roughness_texture;
	f32        roughness_factor;

	r_texture *normal_texture;

	r_texture *emissive_texture;
	v4         emissive_factor;
	/*
	albedo                |
	metallic              | --> Disney + UE4 paper
	roughness / specular  |
	cavity                |
	subsurface   |
	anisotropy   | --> Disney paper
	clearcoat    |
	sheen        |
	ambient occlusion | --> Valve Source2, same as cavity?
	emission
	normals
	*/
};



struct r_object
{
	// @Feature: actually support multiple meshes/materials in the implementation code
	r_mesh     **meshes;
	r_material **mesh_material;
	m4         *mesh_local_transform;
	u64 count;

	v3 scale;
	v3 position;
	v3 rotation;

	bool has_shadow;
};

r_object r_object_create(u64 count, r_mesh **meshes, r_material **materials, v3 position = {0,0,0}, v3 rotation = {0,0,0}, v3 scale = {1,1,1});
r_object r_object_allocate(u64 count);
void r_object_destroy(r_object *object);
m4 r_object_transform_matrix(r_object *object);
m4 r_object_mesh_transform_matrix(r_object *object, u64 mesh_i);


#endif