Struct QualitySettings 

pub struct QualitySettings {
    pub taa: bool,
    pub ssao: Option<SsaoSettings>,
    pub ssr: Option<SsrSettings>,
    pub rt_reflections: Option<RtReflectionSettings>,
    pub ssgi: Option<SsgiSettings>,
    pub reflection_blur_scale: u32,
    pub auto_exposure: Option<AutoExposureSettings>,
    pub auto_exposure_bias_ev: f32,
}

The resolved per-feature quality settings for RenderBackend::apply_quality_settings. GraphicsSystem derives these from its stored PostProcessConfig (with the user’s persisted toggle overrides applied) whenever a Quality-group toggle changes, so the backend receives ready-to-use settings rather than re-deriving from the asset. Each Option mirrors the init-time gate: None means the feature is off and its passes / resources should be torn down; Some means it is on and its resources should exist. A backend without a live-rebuild path ignores this (the choice still persists and applies at the next launch).

Fields

taa: bool

Temporal anti-aliasing on/off (the Taa anti-aliasing mode). The backend additionally suppresses TAA while temporal upscaling is active (the scaler does its own accumulation). The other anti-aliasing modes are the composite FXAA edge filter, which rides PostProcessTunables.fxaa (pushed via update_post_process), not this pass-rebuild payload.

ssao: Option<SsaoSettings>

Screen-space ambient occlusion, or None when off.

ssr: Option<SsrSettings>

Screen-space reflections, or None when off.

rt_reflections: Option<RtReflectionSettings>

Hardware ray-traced reflections. The backend further gates this on GPU ray-tracing support, falling back to leaving it off when unsupported.

ssgi: Option<SsgiSettings>

Screen-space global illumination, or None when off.

reflection_blur_scale: u32

Per-axis divisor for the roughness-aware reflection blur target (the reduced-resolution first pass of the SSR / RT reflection composite), resolved from PostProcessConfig.reflection_blur_resolution. Every backend sizes its blur target at render / this on a live reflection rebuild.

auto_exposure: Option<AutoExposureSettings>

Auto-exposure, or None when off.

auto_exposure_bias_ev: f32

The authored exposure bias (stops) auto-exposure applies on top of its adapted value; carried so a live auto-exposure enable matches init.