export module ra3.vulkan;

import std;

export import ra3.core;
import ra3.render;
import ra3.client;

/**
 * Fallback Vulkan backend used when the build has no Vulkan loader (for example
 * the Windows cross-build without a Vulkan SDK). `init` fails so the caller can
 * select another display.
 */
export namespace ra3::vulkan {
    class vulkan_display final : public ra3::client::display {
    public:
        [[nodiscard]] auto init(const ra3::client::display_options &) -> bool override { return false; }
        [[nodiscard]] auto present(const ra3::render::image &, const ra3::render::view_rect &, bool) -> bool override { return false; }
        [[nodiscard]] auto poll_event(ra3::render::ui_event &) -> bool override { return false; }
        [[nodiscard]] auto window_size() const -> std::pair<int, int> override { return {0, 0}; }
        [[nodiscard]] auto key_down(ra3::render::ui_key) const -> bool override { return false; }
        auto shutdown() -> void override {}
        [[nodiscard]] auto name() const -> std::string_view override { return "vulkan(null)"; }
    };
}