#pragma once

#include "opengl/shader_program_variable.hpp"
#include <array>
#include "util/enum_bitfield_operators.hpp"
#include <string_view>

namespace shader_program::attributes::point_cloud
{

enum class flags : std::uint8_t
{
	none = 0,
	position = 1 << 0,
	normal = 1 << 1,
	luminance = 1 << 2,
	color = 1 << 2,
	alpha = 1 << 3
};

constexpr inline auto position = zgl::shader_program_variable({ GL_FLOAT_VEC3, 0 }, "model_vertex_position");
constexpr inline auto normal = zgl::shader_program_variable({ GL_FLOAT_VEC3, 1 }, "model_vertex_normal");
constexpr inline auto luminance = zgl::shader_program_variable({ GL_FLOAT_VEC3, 1 }, "model_vertex_l");
constexpr inline auto color = zgl::shader_program_variable({ GL_FLOAT_VEC3, 1 }, "model_vertex_rgb");
constexpr inline auto alpha = zgl::shader_program_variable({ GL_FLOAT_VEC3, 1 }, "model_vertex_a");

constexpr inline auto all = std::array{
	position, normal, luminance, color, alpha
};

constexpr inline auto names = std::array<std::string_view, 5>{
	"position",
	"normal",
	"luminance",
	"color",
	"alpha"
};


}

DEFINE_ENUM_BITFIELD_OPERATORS(shader_program::attributes::point_cloud::flags)