fixes

include/shader_program/attributes/mesh_attributes.hpp

@@ -0,0 +1,83 @@
+#pragma once
+
+#include "opengl/shader_program_variable.hpp"
+#include <array>
+
+namespace shader_program::attributes::mesh
+{
+
+enum class flags : int {
+	none = 0,
+	position = 1 << 0,
+	normal = 1 << 1,
+	tex_coord = 1 << 2
+};
+
+constexpr inline auto position = zgl::shader_program_variable({ GL_FLOAT_VEC3, 0 }, "vertex_position");
+constexpr inline auto normal = zgl::shader_program_variable({ GL_FLOAT_VEC3, 1 }, "vertex_normal");
+constexpr inline auto tex_coord = zgl::shader_program_variable({ GL_FLOAT_VEC2, 2 }, "vertex_tex_coord");
+
+constexpr inline auto all = std::array{
+	position, normal, tex_coord
+};
+
+}
+
+
+[[nodiscard]] constexpr shader_program::attributes::mesh::flags operator|(
+	const shader_program::attributes::mesh::flags& a, const shader_program::attributes::mesh::flags& b
+) {
+	return static_cast<shader_program::attributes::mesh::flags>(static_cast<int>(a) | static_cast<int>(b));
+}
+
+[[nodiscard]] constexpr shader_program::attributes::mesh::flags operator&(
+	const shader_program::attributes::mesh::flags& a, const shader_program::attributes::mesh::flags& b
+) {
+	return static_cast<shader_program::attributes::mesh::flags>(static_cast<int>(a) & static_cast<int>(b));
+}
+
+[[nodiscard]] constexpr shader_program::attributes::mesh::flags operator^(
+	const shader_program::attributes::mesh::flags& a, const shader_program::attributes::mesh::flags& b
+) {
+	return static_cast<shader_program::attributes::mesh::flags>(static_cast<int>(a) ^ static_cast<int>(b));
+}
+
+[[nodiscard]] constexpr shader_program::attributes::mesh::flags operator~(const shader_program::attributes::mesh::flags& a) {
+	return static_cast<shader_program::attributes::mesh::flags>(~static_cast<int>(a));
+}
+
+constexpr shader_program::attributes::mesh::flags& operator|=(shader_program::attributes::mesh::flags& a, const shader_program::attributes::mesh::flags& b) {
+	return a = a | b;
+}
+
+constexpr shader_program::attributes::mesh::flags& operator&=(shader_program::attributes::mesh::flags& a, const shader_program::attributes::mesh::flags& b) {
+	return a = a & b;
+}
+
+constexpr shader_program::attributes::mesh::flags& operator^=(shader_program::attributes::mesh::flags& a, const shader_program::attributes::mesh::flags& b) {
+	return a = a ^ b;
+}
+
+[[nodiscard]] constexpr bool operator<(
+	shader_program::attributes::mesh::flags lhs, shader_program::attributes::mesh::flags rhs
+) {
+	return static_cast<int>(lhs) < static_cast<int>(rhs);
+}
+
+[[nodiscard]] constexpr bool operator<=(
+	shader_program::attributes::mesh::flags lhs, shader_program::attributes::mesh::flags rhs
+) {
+	return static_cast<int>(lhs) <= static_cast<int>(rhs);
+}
+
+[[nodiscard]] constexpr bool operator>(
+	shader_program::attributes::mesh::flags lhs, shader_program::attributes::mesh::flags rhs
+) {
+	return static_cast<int>(lhs) > static_cast<int>(rhs);
+}
+
+[[nodiscard]] constexpr bool operator>=(
+	shader_program::attributes::mesh::flags lhs, shader_program::attributes::mesh::flags rhs
+) {
+	return static_cast<int>(lhs) >= static_cast<int>(rhs);
+}