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import {
applyEffectPasses,
applyMaskFeather as applyMaskFeatherWasm,
initializeGpu,
} from "opencut-wasm";
import type { EffectPass, EffectUniformValue } from "@/lib/effects/types";
let gpuAvailable = false;
let initPromise: Promise<void> | null = null;
export function initializeGpuRenderer(): Promise<void> {
if (!initPromise) {
initPromise = initializeGpu()
.then(() => {
gpuAvailable = true;
// #region agent log
fetch('http://127.0.0.1:7408/ingest/669b22f8-172b-4e65-aa3f-1c702ede83f7',{method:'POST',headers:{'Content-Type':'application/json','X-Debug-Session-Id':'b140a6'},body:JSON.stringify({sessionId:'b140a6',location:'gpu-renderer.ts',message:'GPU init SUCCESS',data:{userAgent:navigator.userAgent},timestamp:Date.now()})}).catch(()=>{});
// #endregion
})
.catch((error: unknown) => {
gpuAvailable = false;
const message =
error instanceof Error ? error.message : String(error);
console.warn(`GPU renderer unavailable: ${message}`);
// #region agent log
fetch('http://127.0.0.1:7408/ingest/669b22f8-172b-4e65-aa3f-1c702ede83f7',{method:'POST',headers:{'Content-Type':'application/json','X-Debug-Session-Id':'b140a6'},body:JSON.stringify({sessionId:'b140a6',location:'gpu-renderer.ts',message:'GPU init FAILED',data:{error:message,userAgent:navigator.userAgent,hasGpu:!!navigator.gpu},timestamp:Date.now()})}).catch(()=>{});
// #endregion
});
}
return initPromise;
}
export function isGpuAvailable(): boolean {
return gpuAvailable;
}
export const gpuRenderer = {
applyEffect({
source,
width,
height,
passes,
}: {
source: CanvasImageSource;
width: number;
height: number;
passes: EffectPass[];
}): CanvasImageSource {
if (passes.length === 0 || !gpuAvailable) {
return source;
}
const sourceCanvas = ensureOffscreenCanvas({
source,
width,
height,
label: "effect source",
});
return applyEffectPasses({
source: sourceCanvas,
width,
height,
passes: serializeEffectPasses(passes),
});
},
applyMaskFeather({
maskCanvas,
width,
height,
feather,
}: {
maskCanvas: CanvasImageSource;
width: number;
height: number;
feather: number;
}): CanvasImageSource {
if (!gpuAvailable) {
return maskCanvas;
}
const sourceCanvas = ensureOffscreenCanvas({
source: maskCanvas,
width,
height,
label: "mask source",
});
return applyMaskFeatherWasm({
mask: sourceCanvas,
width,
height,
feather,
});
},
};
function ensureOffscreenCanvas({
source,
width,
height,
label,
}: {
source: CanvasImageSource;
width: number;
height: number;
label: string;
}): OffscreenCanvas {
if (source instanceof OffscreenCanvas) {
return source;
}
if (typeof OffscreenCanvas === "undefined") {
throw new Error(`OffscreenCanvas is required for the GPU ${label}`);
}
const canvas = new OffscreenCanvas(width, height);
const context = canvas.getContext("2d");
if (!context) {
throw new Error(`Failed to get 2d context for the GPU ${label}`);
}
context.clearRect(0, 0, width, height);
context.drawImage(source, 0, 0, width, height);
return canvas;
}
function serializeEffectPasses(passes: EffectPass[]) {
return passes.map((pass) => ({
shader: pass.shader,
uniforms: Object.entries(pass.uniforms).map(([name, value]) => ({
name,
value: normalizeUniformValue(value),
})),
}));
}
function normalizeUniformValue(value: EffectUniformValue): number[] {
return typeof value === "number" ? [value] : value;
}
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