gpu_preference_tokens_internal.h

#pragma once
 
#include "pixelbullet/graphics/gpu_selection.h"
 
#include <optional>
#include <string_view>
 
namespace pixelbullet::application_internal
{
inline constexpr std::string_view k_graphics_device_preference_token_values = "auto|discrete|integrated|virtual|cpu";
 
[[nodiscard]] inline std::optional<GraphicsDevicePreference> parse_graphics_device_preference_token(const std::string_view value) noexcept
{
    if (value == "auto")
    {
        return GraphicsDevicePreference::Auto;
    }
    if (value == "discrete")
    {
        return GraphicsDevicePreference::Discrete;
    }
    if (value == "integrated")
    {
        return GraphicsDevicePreference::Integrated;
    }
    if (value == "virtual")
    {
        return GraphicsDevicePreference::Virtual;
    }
    if (value == "cpu")
    {
        return GraphicsDevicePreference::Cpu;
    }
 
    return std::nullopt;
}
 
[[nodiscard]] inline std::optional<std::string_view> graphics_device_preference_token(const GraphicsDevicePreference preference) noexcept
{
    switch (preference)
    {
    case GraphicsDevicePreference::Auto:
        return "auto";
    case GraphicsDevicePreference::Discrete:
        return "discrete";
    case GraphicsDevicePreference::Integrated:
        return "integrated";
    case GraphicsDevicePreference::Virtual:
        return "virtual";
    case GraphicsDevicePreference::Cpu:
        return "cpu";
    }
 
    return std::nullopt;
}
 
[[nodiscard]] inline std::string_view graphics_device_preference_token_or_unknown(const GraphicsDevicePreference preference) noexcept
{
    if (const auto token = graphics_device_preference_token(preference); token.has_value())
    {
        return *token;
    }
 
    return "unknown";
}
} // namespace pixelbullet::application_internal