#pragma once

#include "opengl/shading/model_geometry.hpp"
#include "opengl/shading/features/generic_features.hpp"

namespace zgl::shading
{
struct shader_program_requirements
{
	model_geometry::types geometry;
	features::generic::type features;
};
}
/*
struct shader_program_metadata
{
	using generic_feature_type = std::common_type_t<
		std::underlying_type_t<features::mesh::flags>,
		std::underlying_type_t<features::point_cloud::flags>
	>;

	static constexpr auto geometry_bits = static_cast<std::size_t>(std::bit_width(geometry::names.size()));
	static constexpr auto feature_bits = sizeof(generic_feature_type) * 8 - geometry_bits;

	explicit shader_program_metadata(const features::mesh::flags static_enabled, const features::mesh::flags dynamic_enable) :
		shader_program_metadata(
			geometry::types::mesh,
			static_cast<generic_feature_type>(static_enabled),
			static_cast<generic_feature_type>(dynamic_enable)
		) {}

	explicit shader_program_metadata(const features::point_cloud::flags static_enabled, const features::point_cloud::flags dynamic_enable) :
		shader_program_metadata(
			geometry::types::point_cloud,
			static_cast<generic_feature_type>(static_enabled),
			static_cast<generic_feature_type>(dynamic_enable)
		) {}

	shader_program_metadata(const geometry::types geometry_type, const generic_feature_type static_enabled, generic_feature_type dynamic_enable) :
		m_geometry_type{ geometry_type }, m_static_enabled{ static_enabled }, m_dynamic_enable{ dynamic_enable } {}


	[[nodiscard]] auto operator<=>(const shader_program_metadata& other) const noexcept
	{
		return (
			std::tie(this->m_geometry_type, std::popcount(this->m_static_enabled), std::popcount(this->m_dynamic_enable)) <=>
			std::tie(other.m_geometry_type, std::popcount(other.m_static_enabled), std::popcount(other.m_dynamic_enable))
		);
	}

	[[nodiscard]] bool operator==(const shader_program_metadata& other) const noexcept = default;

	geometry::types m_geometry_type : geometry_bits;
	generic_feature_type m_static_enabled : feature_bits;
	generic_feature_type m_dynamic_enable;
};*/