mirror of
https://github.com/NousResearch/hermes-agent.git
synced 2026-04-26 01:01:40 +00:00
77 lines
2.8 KiB
TypeScript
77 lines
2.8 KiB
TypeScript
import { useGpuTier } from "@nous-research/ui/hooks/use-gpu-tier";
|
||
|
||
/**
|
||
* Replicates the visual layer stack of `<Overlays dark />` from
|
||
* `@nous-research/ui` without pulling in its leva / gsap / three peer deps.
|
||
*
|
||
* See `design-language/src/ui/components/overlays/index.tsx` for the source of
|
||
* truth. Defaults match LENS_0 (the Hermes teal dark preset); the deep canvas
|
||
* and the warm vignette both read theme-switchable CSS custom properties so
|
||
* `ThemeProvider` can repaint the stack without remounting.
|
||
*
|
||
* z-1 bg = `var(--background-base)`, mix-blend-mode: difference
|
||
* z-2 filler-bg jpeg, inverted, opacity 0.033, difference
|
||
* z-99 warm top-left vignette (`var(--warm-glow)`), opacity 0.22, lighten
|
||
* z-101 noise grain (SVG, ~55% opacity × `--noise-opacity-mul`,
|
||
* color-dodge) — gated on GPU tier
|
||
*
|
||
* `useGpuTier` returns 0 when WebGL is unavailable, the renderer is a
|
||
* software rasterizer (SwiftShader/llvmpipe), or the user has
|
||
* `prefers-reduced-motion: reduce` set. We skip the animated noise layer
|
||
* in that case so low-power / accessibility-conscious sessions stay crisp,
|
||
* mirroring the DS `<Noise />` component's own opt-out.
|
||
*/
|
||
export function Backdrop() {
|
||
const gpuTier = useGpuTier();
|
||
|
||
return (
|
||
<>
|
||
<div
|
||
aria-hidden
|
||
className="pointer-events-none fixed inset-0 z-[1]"
|
||
style={{
|
||
backgroundColor: "var(--background-base)",
|
||
mixBlendMode: "difference",
|
||
}}
|
||
/>
|
||
|
||
<div
|
||
aria-hidden
|
||
className="pointer-events-none fixed inset-0 z-[2]"
|
||
style={{ mixBlendMode: "difference", opacity: 0.033 }}
|
||
>
|
||
<img
|
||
alt=""
|
||
className="h-[150dvh] w-auto min-w-[100dvw] object-cover object-top-left invert"
|
||
fetchPriority="low"
|
||
src="/ds-assets/filler-bg0.jpg"
|
||
/>
|
||
</div>
|
||
|
||
<div
|
||
aria-hidden
|
||
className="pointer-events-none fixed inset-0 z-[99]"
|
||
style={{
|
||
background:
|
||
"radial-gradient(ellipse at 0% 0%, transparent 60%, var(--warm-glow) 100%)",
|
||
mixBlendMode: "lighten",
|
||
opacity: 0.22,
|
||
}}
|
||
/>
|
||
|
||
{gpuTier > 0 && (
|
||
<div
|
||
aria-hidden
|
||
className="pointer-events-none fixed inset-0 z-[101]"
|
||
style={{
|
||
backgroundImage:
|
||
"url(\"data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' fill='%23eaeaea' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E\")",
|
||
backgroundSize: "512px 512px",
|
||
mixBlendMode: "color-dodge",
|
||
opacity: "calc(0.55 * var(--noise-opacity-mul, 1))",
|
||
}}
|
||
/>
|
||
)}
|
||
</>
|
||
);
|
||
}
|