shader_type canvas_item;

uniform float tile_count;

const int chunk_size = 32;

uniform int tiles[chunk_size*chunk_size];
uniform int items[chunk_size*chunk_size];

uniform sampler2DArray tile_texture : filter_nearest_mipmap;
uniform sampler2DArray item_texture : filter_nearest;

void fragment() {
	float item_id = float(items[int(floor(float(chunk_size) * UV.x) + float(chunk_size) * floor(float(chunk_size) * UV.y))]);
	COLOR = texture(item_texture,
		vec3(mod(UV.x * float(chunk_size), 1.0), mod(UV.y * float(chunk_size), 1.0), float(item_id)) // map
	);

	if (COLOR == vec4(0,0,0,0)){
		float tile_id = float(tiles[int(floor(float(chunk_size) * UV.x) + float(chunk_size) * floor(float(chunk_size) * UV.y))]);
		COLOR = texture(tile_texture,
			vec3(mod(UV.x * float(chunk_size), 1.0), mod(UV.y * float(chunk_size), 1.0), float(tile_id)) // map
		);
	}
}