#pragma once

#if defined (_WIN32)
	#include <SDL.h>
#else
	#include <SDL2/SDL.h>
#endif
#include <GL/glew.h>
#include <glm/glm.hpp>

#include "camera.h"
#include "entity.h"
#include "util.h"
#include "shader_program.h"


struct SDL_Handles
{
	SDL_Window *window;
	SDL_GLContext glContext;
	SDL_DisplayMode currentDisplayMode;
};

struct point_light
{
	uint light_ID;
	glm::vec3 position;
	glm::vec3 color;
	float intensity;
};

/*
// NOTE: array of entities rendered with the same shader program
struct render_group
{
	entity* entities;
	uint entity_count;

	shader_program shader;
};
*/

struct render_state
{
	v2i viewport_dims;
	bool is_debug_draw;
	SDL_Handles handles;
	camera cam;
	util_RGBA clear_col;

	//render_group* render_groups;
	//uint render_group_count;

	point_light* lights;
	uint num_lights;
	uint max_lights;
};

render_state* renInit();

void renShutdown(render_state* rs);

void renRenderFrame(render_state* rs);