concinnity-core 0.19.1

//! The ordered option labels for every user-facing cycle setting, shared by the
//! client renderer and the build pipeline. The client's settings drain reads a
//! key's labels to display + persist the chosen value; the cook reads the label
//! count to decide whether a settings row expands into a `<`/`>` stepper (two
//! options) or a click-to-open dropdown (more than two). Keeping the labels here
//! (not duplicated per crate) means the two never drift on a setting's option
//! count. How a chosen option is applied stays in the client, keyed by the same
//! string.

// Ordered option labels for `vsync`: index 0 is off, index 1 is on.
pub(crate) const VSYNC_OPTIONS: [&str; 2] = ["Off", "On"];
/// Shared Off/On labels for the boolean quality toggles. Index 0 is off, 1 on,
/// so `bool as usize` indexes directly.
pub const OFF_ON_OPTIONS: [&str; 2] = ["Off", "On"];

/// The quality-feature toggle keys (Video "Quality" group). Each gates a render
/// pass whose GPU resources are built at init, so a change rebuilds those
/// resources (live on Metal; persisted + applied at the next launch elsewhere).
/// The client maps each key to the `PostProcessConfig` field it flips.
pub const QUALITY_TOGGLE_KEYS: [&str; 5] = [
    "ssao",
    "ssr",
    "ray_traced_reflections",
    "ssgi",
    "auto_exposure",
];

/// Whether `key` is one of the boolean quality toggles.
pub fn is_quality_toggle(key: &str) -> bool {
    QUALITY_TOGGLE_KEYS.contains(&key)
}

/// Window mode options, in cycle order.
pub const WINDOW_MODE_OPTIONS: [&str; 3] = ["Windowed", "Borderless", "Fullscreen"];
// Render-scale (upscaling quality) options, in cycle order.
pub(crate) const RENDER_SCALE_OPTIONS: [&str; 4] = ["Quality", "Balanced", "Performance", "Ultra"];
/// Upscaler-backend options, in cycle order matching the UpscalerBackend enum
/// (Auto / FSR3 / DLSS / XeSS). DirectX / Vulkan only (Metal uses MetalFX).
pub const UPSCALE_BACKEND_OPTIONS: [&str; 4] = ["Auto", "FSR 3", "DLSS", "XeSS"];

// Frame-rate cap options (Video Display group), in cycle order. "Unlimited" is
// no cap; the rest are target FPS. The client pairs these with the numeric caps.
pub(crate) const FPS_CAP_OPTIONS: [&str; 6] = ["Unlimited", "30", "60", "120", "144", "240"];

/// SSGI gather sub-quality dropdowns, in cycle order. Resolution is finest-first
/// (Full/Half/Quarter), matching the enum.
pub const SSGI_RESOLUTION_OPTIONS: [&str; 3] = ["Full", "Half", "Quarter"];
pub(crate) const SSGI_RAYS_OPTIONS: [&str; 4] = ["4", "8", "16", "32"];
pub(crate) const SSGI_STEPS_OPTIONS: [&str; 4] = ["8", "12", "24", "48"];
/// Reflection blur resolution options, finest-first (matches the enum).
pub const REFLECTION_BLUR_OPTIONS: [&str; 3] = ["Full", "Half", "Quarter"];

/// Anti-aliasing mode options, in cycle order matching the AaMode enum: Off,
/// FXAA (cheap composite edge filter), TAA (temporal accumulation). Ascending
/// cost, so the index doubles as the aggressiveness rank the preset clamps.
pub const AA_MODE_OPTIONS: [&str; 3] = ["Off", "FXAA", "TAA"];

// Shadow-map cascade resolution options (texels), in cycle order. "Off"
// disables shadows; the rest are the per-cascade texel dimensions.
pub(crate) const SHADOW_RESOLUTION_OPTIONS: [&str; 4] = ["Off", "1024", "2048", "4096"];
/// Shadow re-render cadence options, best (most expensive) first.
pub const SHADOW_UPDATE_OPTIONS: [&str; 2] = ["Every Frame", "Hybrid"];
// Shadow-distance options (world units the cascades cover), in cycle order.
pub(crate) const SHADOW_DISTANCE_OPTIONS: [&str; 4] = ["40 m", "80 m", "160 m", "320 m"];
// Shadow cascade-count options, in cycle order.
pub(crate) const SHADOW_CASCADES_OPTIONS: [&str; 3] = ["2", "3", "4"];
// Anisotropic-filtering degree options for the scene sampler, in cycle order.
// "Off" is 1x (plain trilinear); the rest are the max anisotropy degree.
pub(crate) const ANISOTROPY_OPTIONS: [&str; 5] = ["Off", "2x", "4x", "8x", "16x"];
/// Frame-buffering (ring-buffer depth / frames-in-flight) options, in cycle
/// order. Lower is less latency, higher is smoother pacing.
pub const FRAME_BUFFERING_OPTIONS: [&str; 3] = ["1", "2", "3"];
// Texture-quality options, in cycle order (drive the streaming pool cap + the
// per-frame upload budget on the client).
pub(crate) const TEXTURE_QUALITY_OPTIONS: [&str; 4] = ["Low", "Medium", "High", "Ultra"];

/// Master "Graphics Quality" preset options, in cycle order. The labels mirror
/// `QualityPreset::ALL`'s order (locked by a client test); the `Auto` row is
/// relabeled with its resolved tier by the client, which this static table
/// cannot express.
pub const GRAPHICS_QUALITY_OPTIONS: [&str; 6] =
    ["Auto", "Low", "Medium", "High", "Ultra", "Custom"];

// Volume options shared by the master and per-bus volume rows, in cycle
// order. The client maps each to a linear gain.
pub(crate) const VOLUME_OPTIONS: [&str; 5] = ["Off", "25%", "50%", "75%", "100%"];

// Settings whose option list is enumerated from the hardware at runtime, so
// this static registry cannot hold their labels. Each still renders as a
// click-to-open dropdown row; the client seeds the floating list from the
// enumerated values. `resolution` lists the display modes (width x height at
// refresh rate) the current display supports.
pub(crate) const DYNAMIC_DROPDOWN_KEYS: [&str; 1] = ["resolution"];

/// Whether `key`'s options are enumerated at runtime (a dropdown row with no
/// static label table; `options` returns `None` for it).
pub fn is_dynamic_dropdown(key: &str) -> bool {
    DYNAMIC_DROPDOWN_KEYS.contains(&key)
}

/// The option labels for a known setting key, or `None` if the key is unknown
/// (a slider or rebind key, or a typo). A key with more than two labels renders
/// as a dropdown; two labels render as a `<`/`>` stepper.
pub fn options(key: &str) -> Option<&'static [&'static str]> {
    match key {
        "graphics_quality" => Some(&GRAPHICS_QUALITY_OPTIONS),
        "vsync" => Some(&VSYNC_OPTIONS),
        "window_mode" => Some(&WINDOW_MODE_OPTIONS),
        "render_scale" => Some(&RENDER_SCALE_OPTIONS),
        "upscale_backend" => Some(&UPSCALE_BACKEND_OPTIONS),
        "fps_cap" => Some(&FPS_CAP_OPTIONS),
        "master_volume" | "music_volume" | "sfx_volume" | "voice_volume" => Some(&VOLUME_OPTIONS),
        "aa_mode" => Some(&AA_MODE_OPTIONS),
        "ssgi_resolution" => Some(&SSGI_RESOLUTION_OPTIONS),
        "ssgi_rays" => Some(&SSGI_RAYS_OPTIONS),
        "ssgi_steps" => Some(&SSGI_STEPS_OPTIONS),
        "reflection_blur_resolution" => Some(&REFLECTION_BLUR_OPTIONS),
        "shadow_map_size" => Some(&SHADOW_RESOLUTION_OPTIONS),
        "shadow_update" => Some(&SHADOW_UPDATE_OPTIONS),
        "shadow_distance" => Some(&SHADOW_DISTANCE_OPTIONS),
        "shadow_cascades" => Some(&SHADOW_CASCADES_OPTIONS),
        "anisotropy" => Some(&ANISOTROPY_OPTIONS),
        "frames_in_flight" => Some(&FRAME_BUFFERING_OPTIONS),
        "texture_quality" => Some(&TEXTURE_QUALITY_OPTIONS),
        // Display-output / upscaling preference + occlusion toggles (Off/On).
        "temporal_upscaling" | "hdr_display" | "hdr_pq" | "occlusion_two_pass" => {
            Some(&OFF_ON_OPTIONS)
        }
        // Stats-HUD display toggles: a master and one per readout (Off/On).
        "perf_stats" | "show_fps" | "show_vram" => Some(&OFF_ON_OPTIONS),
        key if is_quality_toggle(key) => Some(&OFF_ON_OPTIONS),
        _ => None,
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn resolution_is_a_dynamic_dropdown_with_no_static_options() {
        // The resolution list is enumerated from the display at runtime, so the
        // static registry knows the key only as a dynamic dropdown.
        assert!(is_dynamic_dropdown("resolution"));
        assert!(options("resolution").is_none());
        // Statically-registered keys are not misclassified as dynamic.
        assert!(!is_dynamic_dropdown("window_mode"));
        assert!(!is_dynamic_dropdown("nope"));
    }

    #[test]
    fn quality_toggles_are_off_then_on() {
        for key in QUALITY_TOGGLE_KEYS {
            assert!(is_quality_toggle(key), "{key} should classify as a toggle");
            assert_eq!(options(key), Some(&["Off", "On"][..]), "{key} options");
        }
        assert!(!is_quality_toggle("vsync"));
        assert!(!is_quality_toggle("nope"));
    }

    #[test]
    fn unknown_key_has_no_options() {
        assert!(options("does_not_exist").is_none());
    }

    #[test]
    fn multi_option_settings_are_dropdowns_and_toggles_are_steppers() {
        // A setting with more than two options is a dropdown; exactly two is a
        // stepper. The cook keys its row expansion off this length.
        for key in [
            "graphics_quality",
            "window_mode",
            "render_scale",
            "fps_cap",
            "master_volume",
            "aa_mode",
            "shadow_map_size",
            "anisotropy",
        ] {
            assert!(
                options(key).unwrap().len() > 2,
                "{key} should be a dropdown"
            );
        }
        for key in ["vsync", "shadow_update", "temporal_upscaling", "ssao"] {
            assert_eq!(options(key).unwrap().len(), 2, "{key} should be a stepper");
        }
    }
}