From 190d5d8ecb2006c355c4c6b907599784b375bf52 Mon Sep 17 00:00:00 2001
From: Siddharth <siddharthvaddem@yahoo.com>
Date: Sun, 3 May 2026 17:54:21 -0700
Subject: [PATCH] 3d iso,tilt

---
 src/components/video-editor/SettingsPanel.tsx |  42 +-
 src/components/video-editor/VideoEditor.tsx   |  24 +
 src/components/video-editor/VideoPlayback.tsx | 421 ++++++++++--------
 .../video-editor/projectPersistence.ts        |   7 +
 src/components/video-editor/types.ts          | 129 ++++++
 .../videoPlayback/zoomRegionUtils.ts          |  29 +-
 src/i18n/locales/en/settings.json             |   8 +
 src/lib/exporter/frameRenderer.ts             | 185 ++++++--
 src/lib/exporter/threeDPass.ts                | 356 +++++++++++++++
 9 files changed, 979 insertions(+), 222 deletions(-)
 create mode 100644 src/lib/exporter/threeDPass.ts

diff --git a/src/components/video-editor/SettingsPanel.tsx b/src/components/video-editor/SettingsPanel.tsx
index 5cac573..1ffa0f4 100644
--- a/src/components/video-editor/SettingsPanel.tsx
+++ b/src/components/video-editor/SettingsPanel.tsx
@@ -54,13 +54,19 @@ import type {
 	CropRegion,
 	FigureData,
 	PlaybackSpeed,
+	Rotation3DPreset,
 	WebcamLayoutPreset,
 	WebcamMaskShape,
 	WebcamSizePreset,
 	ZoomDepth,
 	ZoomFocusMode,
 } from "./types";
-import { DEFAULT_WEBCAM_SIZE_PRESET, MAX_PLAYBACK_SPEED, SPEED_OPTIONS } from "./types";
+import {
+	DEFAULT_WEBCAM_SIZE_PRESET,
+	MAX_PLAYBACK_SPEED,
+	ROTATION_3D_PRESET_ORDER,
+	SPEED_OPTIONS,
+} from "./types";
 
 function CustomSpeedInput({
 	value,
@@ -168,6 +174,8 @@ interface SettingsPanelProps {
 	hasCursorTelemetry?: boolean;
 	selectedZoomId?: string | null;
 	onZoomDelete?: (id: string) => void;
+	selectedZoomRotationPreset?: Rotation3DPreset | null;
+	onZoomRotationPresetChange?: (preset: Rotation3DPreset | null) => void;
 	selectedTrimId?: string | null;
 	onTrimDelete?: (id: string) => void;
 	shadowIntensity?: number;
@@ -258,6 +266,8 @@ export function SettingsPanel({
 	hasCursorTelemetry = false,
 	selectedZoomId,
 	onZoomDelete,
+	selectedZoomRotationPreset,
+	onZoomRotationPresetChange,
 	selectedTrimId,
 	onTrimDelete,
 	shadowIntensity = 0,
@@ -647,6 +657,36 @@ export function SettingsPanel({
 							)}
 						</div>
 					)}
+					{zoomEnabled && (
+						<div className="mt-4">
+							<span className="text-sm font-medium text-slate-200 mb-2 block">
+								{t("zoom.threeD.title")}
+							</span>
+							<div className="grid grid-cols-3 gap-1.5">
+								{ROTATION_3D_PRESET_ORDER.map((preset) => {
+									const isActive = selectedZoomRotationPreset === preset;
+									return (
+										<Button
+											key={preset}
+											type="button"
+											onClick={() => onZoomRotationPresetChange?.(isActive ? null : preset)}
+											className={cn(
+												"h-auto w-full rounded-lg border px-1 py-2 text-center shadow-sm transition-all duration-200 ease-out cursor-pointer",
+												isActive
+													? "border-[#34B27B] bg-[#34B27B] text-white shadow-[#34B27B]/20"
+													: "border-white/5 bg-white/5 text-slate-400 hover:bg-white/10 hover:border-white/10 hover:text-slate-200",
+											)}
+										>
+											<span className="text-xs font-semibold capitalize">
+												{t(`zoom.threeD.preset.${preset}`)}
+											</span>
+										</Button>
+									);
+								})}
+							</div>
+						</div>
+					)}
+
 					{zoomEnabled && (
 						<Button
 							onClick={handleDeleteClick}
diff --git a/src/components/video-editor/VideoEditor.tsx b/src/components/video-editor/VideoEditor.tsx
index fe32edf..fd21888 100644
--- a/src/components/video-editor/VideoEditor.tsx
+++ b/src/components/video-editor/VideoEditor.tsx
@@ -67,6 +67,7 @@ import {
 	DEFAULT_ZOOM_DEPTH,
 	type FigureData,
 	type PlaybackSpeed,
+	type Rotation3DPreset,
 	type SpeedRegion,
 	type TrimRegion,
 	type ZoomDepth,
@@ -837,6 +838,23 @@ export default function VideoEditor() {
 		[selectedZoomId, pushState],
 	);
 
+	const handleZoomRotationPresetChange = useCallback(
+		(preset: Rotation3DPreset | null) => {
+			if (!selectedZoomId) return;
+			pushState((prev) => ({
+				zoomRegions: prev.zoomRegions.map((region) => {
+					if (region.id !== selectedZoomId) return region;
+					if (preset === null) {
+						const { rotationPreset: _p, ...rest } = region;
+						return rest;
+					}
+					return { ...region, rotationPreset: preset };
+				}),
+			}));
+		},
+		[selectedZoomId, pushState],
+	);
+
 	const handleTrimDelete = useCallback(
 		(id: string) => {
 			pushState((prev) => ({
@@ -1996,6 +2014,12 @@ export default function VideoEditor() {
 						hasCursorTelemetry={cursorTelemetry.length > 0}
 						selectedZoomId={selectedZoomId}
 						onZoomDelete={handleZoomDelete}
+						selectedZoomRotationPreset={
+							selectedZoomId
+								? (zoomRegions.find((z) => z.id === selectedZoomId)?.rotationPreset ?? null)
+								: null
+						}
+						onZoomRotationPresetChange={handleZoomRotationPresetChange}
 						selectedTrimId={selectedTrimId}
 						onTrimDelete={handleTrimDelete}
 						shadowIntensity={shadowIntensity}
diff --git a/src/components/video-editor/VideoPlayback.tsx b/src/components/video-editor/VideoPlayback.tsx
index c35c0c7..ee52bd9 100644
--- a/src/components/video-editor/VideoPlayback.tsx
+++ b/src/components/video-editor/VideoPlayback.tsx
@@ -36,6 +36,11 @@ import { AnnotationOverlay } from "./AnnotationOverlay";
 import {
 	type AnnotationRegion,
 	type BlurData,
+	computeRotation3DContainScale,
+	DEFAULT_ROTATION_3D,
+	isRotation3DIdentity,
+	lerpRotation3D,
+	rotation3DPerspective,
 	type SpeedRegion,
 	type TrimRegion,
 	ZOOM_DEPTH_SCALES,
@@ -200,6 +205,8 @@ const VideoPlayback = forwardRef<VideoPlaybackRef, VideoPlaybackProps>(
 		const overlayRef = useRef<HTMLDivElement | null>(null);
 
 		const focusIndicatorRef = useRef<HTMLDivElement | null>(null);
+		const composite3DRef = useRef<HTMLDivElement | null>(null);
+		const outerWrapperRef = useRef<HTMLDivElement | null>(null);
 		const [webcamLayout, setWebcamLayout] = useState<StyledRenderRect | null>(null);
 		const [webcamDimensions, setWebcamDimensions] = useState<Size | null>(null);
 		const currentTimeRef = useRef(0);
@@ -921,8 +928,10 @@ const VideoPlayback = forwardRef<VideoPlaybackRef, VideoPlaybackProps>(
 			};
 
 			let lastMotionBlurActive: boolean | null = null;
+			let lastTransformIsIdentity = true;
+			let lastPerspectiveValue = 0;
 			const ticker = () => {
-				const { region, strength, blendedScale, transition } = findDominantRegion(
+				const { region, strength, blendedScale, rotation3D, transition } = findDominantRegion(
 					zoomRegionsRef.current,
 					currentTimeRef.current,
 					{
@@ -1129,6 +1138,44 @@ const VideoPlayback = forwardRef<VideoPlaybackRef, VideoPlaybackProps>(
 						lastMotionBlurActive = false;
 					}
 				}
+
+				const composite3D = composite3DRef.current;
+				const outerWrapper = outerWrapperRef.current;
+				if (composite3D && outerWrapper) {
+					const effectiveRotation =
+						region && targetProgress > 0 && !shouldShowUnzoomedView
+							? lerpRotation3D(DEFAULT_ROTATION_3D, rotation3D, targetProgress)
+							: DEFAULT_ROTATION_3D;
+					const isIdentity = isRotation3DIdentity(effectiveRotation);
+					if (isIdentity) {
+						if (!lastTransformIsIdentity) {
+							composite3D.style.transform = "";
+							composite3D.style.willChange = "auto";
+							lastTransformIsIdentity = true;
+						}
+						if (lastPerspectiveValue !== 0) {
+							outerWrapper.style.perspective = "";
+							lastPerspectiveValue = 0;
+						}
+					} else {
+						const wrapperW = outerWrapper.clientWidth || 1;
+						const wrapperH = outerWrapper.clientHeight || 1;
+						const persp = rotation3DPerspective(wrapperW, wrapperH);
+						const containScale = computeRotation3DContainScale(
+							effectiveRotation,
+							wrapperW,
+							wrapperH,
+							persp,
+						);
+						composite3D.style.transform = `scale(${containScale}) rotateX(${effectiveRotation.rotationX}deg) rotateY(${effectiveRotation.rotationY}deg) rotateZ(${effectiveRotation.rotationZ}deg)`;
+						composite3D.style.willChange = "transform";
+						lastTransformIsIdentity = false;
+						if (persp !== lastPerspectiveValue) {
+							outerWrapper.style.perspective = `${persp}px`;
+							lastPerspectiveValue = persp;
+						}
+					}
+				}
 			};
 
 			app.ticker.add(ticker);
@@ -1270,6 +1317,7 @@ const VideoPlayback = forwardRef<VideoPlaybackRef, VideoPlaybackProps>(
 
 		return (
 			<div
+				ref={outerWrapperRef}
 				className="relative rounded-sm overflow-hidden"
 				style={{
 					width: "100%",
@@ -1294,189 +1342,204 @@ const VideoPlayback = forwardRef<VideoPlaybackRef, VideoPlaybackProps>(
 					}}
 				/>
 				<div
-					ref={containerRef}
+					ref={composite3DRef}
 					className="absolute inset-0"
 					style={{
-						filter:
-							showShadow && shadowIntensity > 0
-								? `drop-shadow(0 ${shadowIntensity * 12}px ${shadowIntensity * 48}px rgba(0,0,0,${shadowIntensity * 0.7})) drop-shadow(0 ${shadowIntensity * 4}px ${shadowIntensity * 16}px rgba(0,0,0,${shadowIntensity * 0.5})) drop-shadow(0 ${shadowIntensity * 2}px ${shadowIntensity * 8}px rgba(0,0,0,${shadowIntensity * 0.3}))`
-								: "none",
+						transformStyle: "preserve-3d",
+						transformOrigin: "center center",
 					}}
-				/>
-				{webcamVideoPath &&
-					(() => {
-						const clipPath = getCssClipPath(webcamLayout?.maskShape ?? "rectangle");
-						const useClipPath = !!clipPath;
-						return (
-							<div
-								className="absolute"
-								style={{
-									left: webcamLayout?.x ?? 0,
-									top: webcamLayout?.y ?? 0,
-									width: webcamLayout?.width ?? 0,
-									height: webcamLayout?.height ?? 0,
-									zIndex: 20,
-									opacity: webcamLayout ? 1 : 0,
-									filter:
-										useClipPath && webcamCssBoxShadow !== "none"
-											? `drop-shadow(${webcamCssBoxShadow})`
-											: undefined,
-								}}
-							>
-								<video
-									ref={webcamVideoRef}
-									src={webcamVideoPath}
-									className={`w-full h-full object-cover ${webcamLayoutPreset === "picture-in-picture" ? "cursor-grab active:cursor-grabbing" : "pointer-events-none"}`}
-									style={{
-										borderRadius: useClipPath ? 0 : (webcamLayout?.borderRadius ?? 0),
-										clipPath: clipPath ?? undefined,
-										boxShadow: useClipPath ? "none" : webcamCssBoxShadow,
-										backgroundColor: "#000",
-									}}
-									onPointerDown={handleWebcamPointerDown}
-									onPointerMove={handleWebcamPointerMove}
-									onPointerUp={handleWebcamPointerUp}
-									onPointerLeave={handleWebcamPointerUp}
-									muted
-									preload="metadata"
-									playsInline
-								/>
-							</div>
-						);
-					})()}
-				{/* Only render overlay after PIXI and video are fully initialized */}
-				{pixiReady && videoReady && (
+				>
 					<div
-						ref={setOverlayRefs}
-						className="absolute inset-0 select-none"
-						style={{ pointerEvents: "auto", zIndex: 30 }}
-						onPointerDown={handleOverlayPointerDown}
-						onPointerMove={handleOverlayPointerMove}
-						onPointerUp={handleOverlayPointerUp}
-						onPointerLeave={handleOverlayPointerLeave}
-					>
-						<div
-							ref={focusIndicatorRef}
-							className="absolute rounded-md border border-[#34B27B]/80 bg-[#34B27B]/20 shadow-[0_0_0_1px_rgba(52,178,123,0.35)]"
-							style={{ display: "none", pointerEvents: "none" }}
-						/>
-						{(() => {
-							const filteredAnnotations = (annotationRegions || []).filter((annotation) => {
-								if (typeof annotation.startMs !== "number" || typeof annotation.endMs !== "number")
-									return false;
-
-								if (annotation.id === selectedAnnotationId) return true;
-
-								const timeMs = Math.round(currentTime * 1000);
-								return timeMs >= annotation.startMs && timeMs < annotation.endMs;
-							});
-
-							const filteredBlurRegions = (blurRegions || []).filter((blurRegion) => {
-								if (typeof blurRegion.startMs !== "number" || typeof blurRegion.endMs !== "number")
-									return false;
-
-								if (blurRegion.id === selectedBlurId) return true;
-
-								const timeMs = Math.round(currentTime * 1000);
-								return timeMs >= blurRegion.startMs && timeMs < blurRegion.endMs;
-							});
-
-							const sorted = [
-								...filteredAnnotations.map((annotation) => ({
-									kind: "annotation" as const,
-									region: annotation,
-								})),
-								...filteredBlurRegions.map((blurRegion) => ({
-									kind: "blur" as const,
-									region: blurRegion,
-								})),
-							].sort((a, b) => a.region.zIndex - b.region.zIndex);
-							const previewSnapshotCanvas =
-								filteredBlurRegions.length > 0
-									? (() => {
-											const app = appRef.current;
-											if (!app?.renderer?.extract) return null;
-											try {
-												return app.renderer.extract.canvas(app.stage);
-											} catch {
-												return null;
-											}
-										})()
-									: null;
-
-							// Handle click-through cycling: when clicking same annotation, cycle to next
-							const handleAnnotationClick = (clickedId: string) => {
-								if (!onSelectAnnotation) return;
-
-								// If clicking on already selected annotation and there are multiple overlapping
-								if (clickedId === selectedAnnotationId && filteredAnnotations.length > 1) {
-									// Find current index and cycle to next
-									const currentIndex = filteredAnnotations.findIndex((a) => a.id === clickedId);
-									const nextIndex = (currentIndex + 1) % filteredAnnotations.length;
-									onSelectAnnotation(filteredAnnotations[nextIndex].id);
-								} else {
-									// First click or clicking different annotation
-									onSelectAnnotation(clickedId);
-								}
-							};
-
-							const handleBlurClick = (clickedId: string) => {
-								if (!onSelectBlur) return;
-
-								if (clickedId === selectedBlurId && filteredBlurRegions.length > 1) {
-									const currentIndex = filteredBlurRegions.findIndex((a) => a.id === clickedId);
-									const nextIndex = (currentIndex + 1) % filteredBlurRegions.length;
-									onSelectBlur(filteredBlurRegions[nextIndex].id);
-								} else {
-									onSelectBlur(clickedId);
-								}
-							};
-
-							return sorted.map((item) => (
-								<AnnotationOverlay
-									key={
-										item.kind === "blur"
-											? `${item.region.id}-${overlaySize.width}-${overlaySize.height}-${item.region.blurData?.type ?? "blur"}-${item.region.blurData?.shape ?? "rectangle"}-${item.region.blurData?.color ?? "white"}-${Math.round(item.region.blurData?.blockSize ?? 0)}-${Math.round(item.region.blurData?.intensity ?? 0)}-${(item.region.blurData?.freehandPoints ?? []).map((p) => `${Math.round(p.x)}_${Math.round(p.y)}`).join("-")}`
-											: `${item.region.id}-${overlaySize.width}-${overlaySize.height}`
-									}
-									annotation={item.region}
-									isSelected={
-										item.kind === "blur"
-											? item.region.id === selectedBlurId
-											: item.region.id === selectedAnnotationId
-									}
-									containerWidth={overlaySize.width}
-									containerHeight={overlaySize.height}
-									onPositionChange={(id, position) =>
-										item.kind === "blur"
-											? onBlurPositionChange?.(id, position)
-											: onAnnotationPositionChange?.(id, position)
-									}
-									onSizeChange={(id, size) =>
-										item.kind === "blur"
-											? onBlurSizeChange?.(id, size)
-											: onAnnotationSizeChange?.(id, size)
-									}
-									onBlurDataChange={
-										item.kind === "blur"
-											? (id, blurData) => onBlurDataChange?.(id, blurData)
-											: undefined
-									}
-									onBlurDataCommit={item.kind === "blur" ? onBlurDataCommit : undefined}
-									onClick={item.kind === "blur" ? handleBlurClick : handleAnnotationClick}
-									zIndex={item.region.zIndex}
-									isSelectedBoost={
-										item.kind === "blur"
-											? item.region.id === selectedBlurId
-											: item.region.id === selectedAnnotationId
-									}
-									previewSourceCanvas={previewSnapshotCanvas}
-									previewFrameVersion={Math.round(currentTime * 1000)}
-								/>
-							));
+						ref={containerRef}
+						className="absolute inset-0"
+						style={{
+							filter:
+								showShadow && shadowIntensity > 0
+									? `drop-shadow(0 ${shadowIntensity * 12}px ${shadowIntensity * 48}px rgba(0,0,0,${shadowIntensity * 0.7})) drop-shadow(0 ${shadowIntensity * 4}px ${shadowIntensity * 16}px rgba(0,0,0,${shadowIntensity * 0.5})) drop-shadow(0 ${shadowIntensity * 2}px ${shadowIntensity * 8}px rgba(0,0,0,${shadowIntensity * 0.3}))`
+									: "none",
+						}}
+					/>
+					{webcamVideoPath &&
+						(() => {
+							const clipPath = getCssClipPath(webcamLayout?.maskShape ?? "rectangle");
+							const useClipPath = !!clipPath;
+							return (
+								<div
+									className="absolute"
+									style={{
+										left: webcamLayout?.x ?? 0,
+										top: webcamLayout?.y ?? 0,
+										width: webcamLayout?.width ?? 0,
+										height: webcamLayout?.height ?? 0,
+										zIndex: 20,
+										opacity: webcamLayout ? 1 : 0,
+										filter:
+											useClipPath && webcamCssBoxShadow !== "none"
+												? `drop-shadow(${webcamCssBoxShadow})`
+												: undefined,
+									}}
+								>
+									<video
+										ref={webcamVideoRef}
+										src={webcamVideoPath}
+										className={`w-full h-full object-cover ${webcamLayoutPreset === "picture-in-picture" ? "cursor-grab active:cursor-grabbing" : "pointer-events-none"}`}
+										style={{
+											borderRadius: useClipPath ? 0 : (webcamLayout?.borderRadius ?? 0),
+											clipPath: clipPath ?? undefined,
+											boxShadow: useClipPath ? "none" : webcamCssBoxShadow,
+											backgroundColor: "#000",
+										}}
+										onPointerDown={handleWebcamPointerDown}
+										onPointerMove={handleWebcamPointerMove}
+										onPointerUp={handleWebcamPointerUp}
+										onPointerLeave={handleWebcamPointerUp}
+										muted
+										preload="metadata"
+										playsInline
+									/>
+								</div>
+							);
 						})()}
-					</div>
-				)}
+					{/* Only render overlay after PIXI and video are fully initialized */}
+					{pixiReady && videoReady && (
+						<div
+							ref={setOverlayRefs}
+							className="absolute inset-0 select-none"
+							style={{ pointerEvents: "auto", zIndex: 30 }}
+							onPointerDown={handleOverlayPointerDown}
+							onPointerMove={handleOverlayPointerMove}
+							onPointerUp={handleOverlayPointerUp}
+							onPointerLeave={handleOverlayPointerLeave}
+						>
+							<div
+								ref={focusIndicatorRef}
+								className="absolute rounded-md border border-[#34B27B]/80 bg-[#34B27B]/20 shadow-[0_0_0_1px_rgba(52,178,123,0.35)]"
+								style={{ display: "none", pointerEvents: "none" }}
+							/>
+							{(() => {
+								const filteredAnnotations = (annotationRegions || []).filter((annotation) => {
+									if (
+										typeof annotation.startMs !== "number" ||
+										typeof annotation.endMs !== "number"
+									)
+										return false;
+
+									if (annotation.id === selectedAnnotationId) return true;
+
+									const timeMs = Math.round(currentTime * 1000);
+									return timeMs >= annotation.startMs && timeMs < annotation.endMs;
+								});
+
+								const filteredBlurRegions = (blurRegions || []).filter((blurRegion) => {
+									if (
+										typeof blurRegion.startMs !== "number" ||
+										typeof blurRegion.endMs !== "number"
+									)
+										return false;
+
+									if (blurRegion.id === selectedBlurId) return true;
+
+									const timeMs = Math.round(currentTime * 1000);
+									return timeMs >= blurRegion.startMs && timeMs < blurRegion.endMs;
+								});
+
+								const sorted = [
+									...filteredAnnotations.map((annotation) => ({
+										kind: "annotation" as const,
+										region: annotation,
+									})),
+									...filteredBlurRegions.map((blurRegion) => ({
+										kind: "blur" as const,
+										region: blurRegion,
+									})),
+								].sort((a, b) => a.region.zIndex - b.region.zIndex);
+								const previewSnapshotCanvas =
+									filteredBlurRegions.length > 0
+										? (() => {
+												const app = appRef.current;
+												if (!app?.renderer?.extract) return null;
+												try {
+													return app.renderer.extract.canvas(app.stage);
+												} catch {
+													return null;
+												}
+											})()
+										: null;
+
+								// Handle click-through cycling: when clicking same annotation, cycle to next
+								const handleAnnotationClick = (clickedId: string) => {
+									if (!onSelectAnnotation) return;
+
+									// If clicking on already selected annotation and there are multiple overlapping
+									if (clickedId === selectedAnnotationId && filteredAnnotations.length > 1) {
+										// Find current index and cycle to next
+										const currentIndex = filteredAnnotations.findIndex((a) => a.id === clickedId);
+										const nextIndex = (currentIndex + 1) % filteredAnnotations.length;
+										onSelectAnnotation(filteredAnnotations[nextIndex].id);
+									} else {
+										// First click or clicking different annotation
+										onSelectAnnotation(clickedId);
+									}
+								};
+
+								const handleBlurClick = (clickedId: string) => {
+									if (!onSelectBlur) return;
+
+									if (clickedId === selectedBlurId && filteredBlurRegions.length > 1) {
+										const currentIndex = filteredBlurRegions.findIndex((a) => a.id === clickedId);
+										const nextIndex = (currentIndex + 1) % filteredBlurRegions.length;
+										onSelectBlur(filteredBlurRegions[nextIndex].id);
+									} else {
+										onSelectBlur(clickedId);
+									}
+								};
+
+								return sorted.map((item) => (
+									<AnnotationOverlay
+										key={
+											item.kind === "blur"
+												? `${item.region.id}-${overlaySize.width}-${overlaySize.height}-${item.region.blurData?.type ?? "blur"}-${item.region.blurData?.shape ?? "rectangle"}-${item.region.blurData?.color ?? "white"}-${Math.round(item.region.blurData?.blockSize ?? 0)}-${Math.round(item.region.blurData?.intensity ?? 0)}-${(item.region.blurData?.freehandPoints ?? []).map((p) => `${Math.round(p.x)}_${Math.round(p.y)}`).join("-")}`
+												: `${item.region.id}-${overlaySize.width}-${overlaySize.height}`
+										}
+										annotation={item.region}
+										isSelected={
+											item.kind === "blur"
+												? item.region.id === selectedBlurId
+												: item.region.id === selectedAnnotationId
+										}
+										containerWidth={overlaySize.width}
+										containerHeight={overlaySize.height}
+										onPositionChange={(id, position) =>
+											item.kind === "blur"
+												? onBlurPositionChange?.(id, position)
+												: onAnnotationPositionChange?.(id, position)
+										}
+										onSizeChange={(id, size) =>
+											item.kind === "blur"
+												? onBlurSizeChange?.(id, size)
+												: onAnnotationSizeChange?.(id, size)
+										}
+										onBlurDataChange={
+											item.kind === "blur"
+												? (id, blurData) => onBlurDataChange?.(id, blurData)
+												: undefined
+										}
+										onBlurDataCommit={item.kind === "blur" ? onBlurDataCommit : undefined}
+										onClick={item.kind === "blur" ? handleBlurClick : handleAnnotationClick}
+										zIndex={item.region.zIndex}
+										isSelectedBoost={
+											item.kind === "blur"
+												? item.region.id === selectedBlurId
+												: item.region.id === selectedAnnotationId
+										}
+										previewSourceCanvas={previewSnapshotCanvas}
+										previewFrameVersion={Math.round(currentTime * 1000)}
+									/>
+								));
+							})()}
+						</div>
+					)}
+				</div>
 				<video
 					ref={videoRef}
 					src={videoPath}
diff --git a/src/components/video-editor/projectPersistence.ts b/src/components/video-editor/projectPersistence.ts
index beabbe4..8d13428 100644
--- a/src/components/video-editor/projectPersistence.ts
+++ b/src/components/video-editor/projectPersistence.ts
@@ -251,6 +251,12 @@ export function normalizeProjectEditor(editor: Partial<ProjectEditorState>): Pro
 					const startMs = Math.max(0, Math.min(rawStart, rawEnd));
 					const endMs = Math.max(startMs + 1, rawEnd);
 
+					const validPreset =
+						region.rotationPreset === "iso" ||
+						region.rotationPreset === "left" ||
+						region.rotationPreset === "right"
+							? region.rotationPreset
+							: undefined;
 					return {
 						id: region.id,
 						startMs,
@@ -261,6 +267,7 @@ export function normalizeProjectEditor(editor: Partial<ProjectEditorState>): Pro
 							cy: clamp(isFiniteNumber(region.focus?.cy) ? region.focus.cy : 0.5, 0, 1),
 						},
 						focusMode: region.focusMode === "auto" ? "auto" : "manual",
+						...(validPreset ? { rotationPreset: validPreset } : {}),
 					};
 				})
 		: [];
diff --git a/src/components/video-editor/types.ts b/src/components/video-editor/types.ts
index 046f428..f976efc 100644
--- a/src/components/video-editor/types.ts
+++ b/src/components/video-editor/types.ts
@@ -26,6 +26,37 @@ export interface ZoomFocus {
 	cy: number; // normalized vertical center (0-1)
 }
 
+export interface Rotation3D {
+	rotationX: number;
+	rotationY: number;
+	rotationZ: number;
+}
+
+export const DEFAULT_ROTATION_3D: Rotation3D = {
+	rotationX: 0,
+	rotationY: 0,
+	rotationZ: 0,
+};
+
+export type Rotation3DPreset = "iso" | "left" | "right";
+
+export const ROTATION_3D_PRESETS: Record<Rotation3DPreset, Rotation3D> = {
+	iso: { rotationX: -10, rotationY: -16, rotationZ: 0 },
+	left: { rotationX: 0, rotationY: -22, rotationZ: 0 },
+	right: { rotationX: 0, rotationY: 22, rotationZ: 0 },
+};
+
+export const ROTATION_3D_PRESET_ORDER: Rotation3DPreset[] = ["iso", "left", "right"];
+
+/** Perspective distance in CSS px is computed at render-time as this factor times
+ * min(viewport width, viewport height). Same factor used in preview and export so
+ * the visual look is identical regardless of canvas resolution. */
+export const ROTATION_3D_PERSPECTIVE_FACTOR = 2.6;
+
+export function rotation3DPerspective(width: number, height: number): number {
+	return Math.min(width, height) * ROTATION_3D_PERSPECTIVE_FACTOR;
+}
+
 export interface ZoomRegion {
 	id: string;
 	startMs: number;
@@ -33,6 +64,104 @@ export interface ZoomRegion {
 	depth: ZoomDepth;
 	focus: ZoomFocus;
 	focusMode?: ZoomFocusMode;
+	rotationPreset?: Rotation3DPreset;
+}
+
+export function getRotation3D(region: Pick<ZoomRegion, "rotationPreset">): Rotation3D {
+	if (!region.rotationPreset) return DEFAULT_ROTATION_3D;
+	return ROTATION_3D_PRESETS[region.rotationPreset];
+}
+
+export function isRotation3DIdentity(r: Rotation3D, eps = 0.01): boolean {
+	return Math.abs(r.rotationX) < eps && Math.abs(r.rotationY) < eps && Math.abs(r.rotationZ) < eps;
+}
+
+export function lerpRotation3D(a: Rotation3D, b: Rotation3D, t: number): Rotation3D {
+	return {
+		rotationX: a.rotationX + (b.rotationX - a.rotationX) * t,
+		rotationY: a.rotationY + (b.rotationY - a.rotationY) * t,
+		rotationZ: a.rotationZ + (b.rotationZ - a.rotationZ) * t,
+	};
+}
+
+/**
+ * Compute the maximum uniform scale that, when applied alongside `rot` and a perspective
+ * of `perspective` CSS px, keeps the projected bounding box of a `width × height` element
+ * inside its original `width × height` rectangle. Returns 1 when no scaling is needed.
+ *
+ * Math: project each rotated corner onto the screen via x' = x·P/(P−z); take the worst-case
+ * |x'|/|y'| against the half-extents and return the limiting ratio. This makes the rotated
+ * recording sit *inside* the zoom window instead of bleeding past it.
+ */
+export function computeRotation3DContainScale(
+	rot: Rotation3D,
+	width: number,
+	height: number,
+	perspective: number,
+): number {
+	const a = (rot.rotationX * Math.PI) / 180;
+	const b = (rot.rotationY * Math.PI) / 180;
+	const g = (rot.rotationZ * Math.PI) / 180;
+	const ca = Math.cos(a);
+	const sa = Math.sin(a);
+	const cb = Math.cos(b);
+	const sb = Math.sin(b);
+	const cg = Math.cos(g);
+	const sg = Math.sin(g);
+	const halfW = width / 2;
+	const halfH = height / 2;
+	const corners: Array<[number, number]> = [
+		[-halfW, -halfH],
+		[halfW, -halfH],
+		[halfW, halfH],
+		[-halfW, halfH],
+	];
+
+	let maxAbsX = 0;
+	let maxAbsY = 0;
+
+	for (const [x0, y0] of corners) {
+		// CSS "rotateX(α) rotateY(β) rotateZ(γ)" reads right-to-left: Z first, then Y, then X.
+		let px = x0;
+		let py = y0;
+		let pz = 0;
+
+		// rotateZ
+		const zx = px * cg - py * sg;
+		const zy = px * sg + py * cg;
+		px = zx;
+		py = zy;
+
+		// rotateY
+		const yx = px * cb + pz * sb;
+		const yz = -px * sb + pz * cb;
+		px = yx;
+		pz = yz;
+
+		// rotateX
+		const xy = py * ca - pz * sa;
+		const xz = py * sa + pz * ca;
+		py = xy;
+		pz = xz;
+
+		// Perspective projection: viewer at (0, 0, P), looking toward −z. A point at z=pz
+		// is scaled by P / (P − pz). When perspective ≤ 0 we treat as orthographic.
+		if (perspective > 0) {
+			const denom = perspective - pz;
+			if (denom <= 0) return 1; // pathological — skip scaling rather than crash
+			const f = perspective / denom;
+			px *= f;
+			py *= f;
+		}
+
+		if (Math.abs(px) > maxAbsX) maxAbsX = Math.abs(px);
+		if (Math.abs(py) > maxAbsY) maxAbsY = Math.abs(py);
+	}
+
+	if (maxAbsX === 0 || maxAbsY === 0) return 1;
+	const sx = halfW / maxAbsX;
+	const sy = halfH / maxAbsY;
+	return Math.min(sx, sy, 1);
 }
 
 export interface CursorTelemetryPoint {
diff --git a/src/components/video-editor/videoPlayback/zoomRegionUtils.ts b/src/components/video-editor/videoPlayback/zoomRegionUtils.ts
index ce31e0e..5647054 100644
--- a/src/components/video-editor/videoPlayback/zoomRegionUtils.ts
+++ b/src/components/video-editor/videoPlayback/zoomRegionUtils.ts
@@ -1,5 +1,5 @@
-import type { CursorTelemetryPoint, ZoomFocus, ZoomRegion } from "../types";
-import { ZOOM_DEPTH_SCALES } from "../types";
+import type { CursorTelemetryPoint, Rotation3D, ZoomFocus, ZoomRegion } from "../types";
+import { DEFAULT_ROTATION_3D, getRotation3D, lerpRotation3D, ZOOM_DEPTH_SCALES } from "../types";
 import { TRANSITION_WINDOW_MS, ZOOM_IN_TRANSITION_WINDOW_MS } from "./constants";
 import { interpolateCursorAt } from "./cursorFollowUtils";
 import { clampFocusToScale } from "./focusUtils";
@@ -164,6 +164,7 @@ function getActiveRegion(
 		},
 		strength: activeRegions[0].strength,
 		blendedScale: null,
+		rotation3D: getRotation3D(activeRegion),
 	};
 }
 
@@ -189,6 +190,7 @@ function getConnectedRegionHold(
 				},
 				strength: 1,
 				blendedScale: null,
+				rotation3D: getRotation3D(pair.nextRegion),
 			};
 		}
 	}
@@ -233,6 +235,11 @@ function getConnectedRegionTransition(
 			viewportRatio,
 		);
 		const transitionFocus = getLinearFocus(currentFocus, nextFocus, transitionProgress);
+		const transitionRotation = lerpRotation3D(
+			getRotation3D(currentRegion),
+			getRotation3D(nextRegion),
+			transitionProgress,
+		);
 
 		return {
 			region: {
@@ -241,6 +248,7 @@ function getConnectedRegionTransition(
 			},
 			strength: 1,
 			blendedScale: transitionScale,
+			rotation3D: transitionRotation,
 			transition: {
 				progress: transitionProgress,
 				startFocus: currentFocus,
@@ -258,6 +266,7 @@ type DominantRegionResult = {
 	region: ZoomRegion | null;
 	strength: number;
 	blendedScale: number | null;
+	rotation3D: Rotation3D;
 	transition: ConnectedPanTransition | null;
 };
 
@@ -309,14 +318,26 @@ export function findDominantRegion(
 				const activeRegion = getActiveRegion(regions, timeMs, connectedPairs, telemetry, vr);
 				result = activeRegion
 					? { ...activeRegion, transition: null }
-					: { region: null, strength: 0, blendedScale: null, transition: null };
+					: {
+							region: null,
+							strength: 0,
+							blendedScale: null,
+							rotation3D: DEFAULT_ROTATION_3D,
+							transition: null,
+						};
 			}
 		}
 	} else {
 		const activeRegion = getActiveRegion(regions, timeMs, connectedPairs, telemetry, vr);
 		result = activeRegion
 			? { ...activeRegion, transition: null }
-			: { region: null, strength: 0, blendedScale: null, transition: null };
+			: {
+					region: null,
+					strength: 0,
+					blendedScale: null,
+					rotation3D: DEFAULT_ROTATION_3D,
+					transition: null,
+				};
 	}
 
 	dominantRegionCache = {
diff --git a/src/i18n/locales/en/settings.json b/src/i18n/locales/en/settings.json
index 9b85c2b..d926709 100644
--- a/src/i18n/locales/en/settings.json
+++ b/src/i18n/locales/en/settings.json
@@ -8,6 +8,14 @@
 			"manual": "Manual",
 			"auto": "Auto",
 			"autoDescription": "Camera follows the recorded cursor position"
+		},
+		"threeD": {
+			"title": "3D Rotation",
+			"preset": {
+				"iso": "Iso",
+				"left": "Left",
+				"right": "Right"
+			}
 		}
 	},
 	"speed": {
diff --git a/src/lib/exporter/frameRenderer.ts b/src/lib/exporter/frameRenderer.ts
index 0a151b0..5906c70 100644
--- a/src/lib/exporter/frameRenderer.ts
+++ b/src/lib/exporter/frameRenderer.ts
@@ -11,13 +11,19 @@ import { MotionBlurFilter } from "pixi-filters/motion-blur";
 import type {
 	AnnotationRegion,
 	CropRegion,
+	Rotation3D,
 	SpeedRegion,
 	WebcamLayoutPreset,
 	WebcamSizePreset,
 	ZoomDepth,
 	ZoomRegion,
 } from "@/components/video-editor/types";
-import { ZOOM_DEPTH_SCALES } from "@/components/video-editor/types";
+import {
+	DEFAULT_ROTATION_3D,
+	isRotation3DIdentity,
+	lerpRotation3D,
+	ZOOM_DEPTH_SCALES,
+} from "@/components/video-editor/types";
 import {
 	AUTO_FOLLOW_RAMP_DISTANCE,
 	AUTO_FOLLOW_SMOOTHING_FACTOR,
@@ -60,6 +66,7 @@ import {
 	parseCssGradient,
 	resolveLinearGradientAngle,
 } from "./gradientParser";
+import { createThreeDPass, type ThreeDPass } from "./threeDPass";
 
 interface FrameRenderConfig {
 	width: number;
@@ -124,8 +131,12 @@ export class FrameRenderer {
 	private shadowCtx: CanvasRenderingContext2D | null = null;
 	private compositeCanvas: HTMLCanvasElement | null = null;
 	private compositeCtx: CanvasRenderingContext2D | null = null;
+	private foregroundCanvas: HTMLCanvasElement | null = null;
+	private foregroundCtx: CanvasRenderingContext2D | null = null;
 	private rasterCanvas: HTMLCanvasElement | null = null;
 	private rasterCtx: CanvasRenderingContext2D | null = null;
+	private threeDPass: ThreeDPass | null = null;
+	private currentRotation3D: Rotation3D = { ...DEFAULT_ROTATION_3D };
 	private config: FrameRenderConfig;
 	private animationState: AnimationState;
 	private layoutCache: LayoutCache | null = null;
@@ -217,6 +228,19 @@ export class FrameRenderer {
 			throw new Error("Failed to get 2D context for raster canvas");
 		}
 
+		// Foreground canvas: holds recording + shadow + webcam + cursor + annotations,
+		// transparent background. The 3D rotation pass operates only on this layer so
+		// the wallpaper stays flat behind the rotated content (matching preview).
+		this.foregroundCanvas = document.createElement("canvas");
+		this.foregroundCanvas.width = this.config.width;
+		this.foregroundCanvas.height = this.config.height;
+		this.foregroundCtx = this.foregroundCanvas.getContext("2d", {
+			willReadFrequently: this.isLinux,
+		});
+		if (!this.foregroundCtx) {
+			throw new Error("Failed to get 2D context for foreground canvas");
+		}
+
 		// Setup shadow canvas if needed
 		if (this.config.showShadow) {
 			this.shadowCanvas = document.createElement("canvas");
@@ -235,6 +259,13 @@ export class FrameRenderer {
 		this.maskGraphics = new Graphics();
 		this.videoContainer.addChild(this.maskGraphics);
 		this.videoContainer.mask = this.maskGraphics;
+
+		try {
+			this.threeDPass = createThreeDPass(this.config.width, this.config.height);
+		} catch (error) {
+			console.warn("[FrameRenderer] 3D pass unavailable, rotation fields will be ignored:", error);
+			this.threeDPass = null;
+		}
 	}
 
 	private async setupBackground(): Promise<void> {
@@ -392,15 +423,18 @@ export class FrameRenderer {
 		// Render the PixiJS stage to its canvas (video only, transparent background)
 		this.app.renderer.render(this.app.stage);
 
-		// Composite with shadows to final output canvas
-		this.compositeWithShadows(webcamFrame);
+		// Skip baking the shadow when the WebGL rotation pass will run — it'd alias to
+		// a hard edge through bilinear sampling. We re-apply shadow fresh after rotation.
+		const willRotate = !isRotation3DIdentity(this.currentRotation3D);
+		this.compositeWithShadows(webcamFrame, !willRotate);
 
 		// Cursor highlight overlay (rendered above video, below annotations)
+		// Drawn onto foreground so it rotates with the recording.
 		if (
 			this.config.cursorHighlight?.enabled &&
 			this.config.cursorTelemetry &&
 			this.config.cursorTelemetry.length > 0 &&
-			this.compositeCtx
+			this.foregroundCtx
 		) {
 			const emphasisAlpha = clickEmphasisAlpha(
 				timeMs,
@@ -423,7 +457,7 @@ export class FrameRenderer {
 				const previewH = this.config.previewHeight ?? this.config.height;
 				const cursorScale = (this.config.width / previewW + this.config.height / previewH) / 2;
 				drawCursorHighlightCanvas(
-					this.compositeCtx,
+					this.foregroundCtx,
 					canvasX,
 					canvasY,
 					{
@@ -435,13 +469,12 @@ export class FrameRenderer {
 			}
 		}
 
-		// Render annotations on top if present
+		// Render annotations on top of foreground (so they rotate with recording).
 		if (
 			this.config.annotationRegions &&
 			this.config.annotationRegions.length > 0 &&
-			this.compositeCtx
+			this.foregroundCtx
 		) {
-			// Calculate scale factor based on export vs preview dimensions
 			const previewWidth = this.config.previewWidth ?? this.config.width;
 			const previewHeight = this.config.previewHeight ?? this.config.height;
 			const scaleX = this.config.width / previewWidth;
@@ -449,7 +482,7 @@ export class FrameRenderer {
 			const scaleFactor = (scaleX + scaleY) / 2;
 
 			await renderAnnotations(
-				this.compositeCtx,
+				this.foregroundCtx,
 				this.config.annotationRegions,
 				this.config.width,
 				this.config.height,
@@ -457,6 +490,58 @@ export class FrameRenderer {
 				scaleFactor,
 			);
 		}
+
+		// Apply 3D rotation to foreground only. Wallpaper (on compositeCanvas) is untouched.
+		if (willRotate && this.threeDPass && this.foregroundCanvas && this.foregroundCtx) {
+			const passCanvas = this.threeDPass.apply(this.foregroundCanvas, this.currentRotation3D);
+			const w = this.foregroundCanvas.width;
+			const h = this.foregroundCanvas.height;
+			this.foregroundCtx.clearRect(0, 0, w, h);
+			if (this.isLinux) {
+				// drawImage(webglCanvas) is unreliable on Linux/Wayland — use readPixels.
+				const pixels = this.threeDPass.readPixels();
+				const imageData = this.foregroundCtx.createImageData(w, h);
+				imageData.data.set(pixels);
+				this.foregroundCtx.putImageData(imageData, 0, 0);
+			} else {
+				this.foregroundCtx.drawImage(passCanvas, 0, 0);
+			}
+		}
+
+		// Apply shadow fresh on the rotated silhouette (flat path already baked it
+		// in compositeWithShadows, so guard on willRotate to avoid doubling).
+		// Same 3-layer filter chain as `main` — keeps the soft Gaussian intact.
+		if (
+			willRotate &&
+			this.config.showShadow &&
+			this.config.shadowIntensity > 0 &&
+			this.shadowCanvas &&
+			this.shadowCtx &&
+			this.foregroundCanvas
+		) {
+			const shadowCtx = this.shadowCtx;
+			const w = this.foregroundCanvas.width;
+			const h = this.foregroundCanvas.height;
+			shadowCtx.clearRect(0, 0, w, h);
+			shadowCtx.save();
+			const intensity = this.config.shadowIntensity;
+			const baseBlur1 = 48 * intensity;
+			const baseBlur2 = 16 * intensity;
+			const baseBlur3 = 8 * intensity;
+			const baseAlpha1 = 0.7 * intensity;
+			const baseAlpha2 = 0.5 * intensity;
+			const baseAlpha3 = 0.3 * intensity;
+			const baseOffset = 12 * intensity;
+			shadowCtx.filter = `drop-shadow(0 ${baseOffset}px ${baseBlur1}px rgba(0,0,0,${baseAlpha1})) drop-shadow(0 ${baseOffset / 3}px ${baseBlur2}px rgba(0,0,0,${baseAlpha2})) drop-shadow(0 ${baseOffset / 6}px ${baseBlur3}px rgba(0,0,0,${baseAlpha3}))`;
+			shadowCtx.drawImage(this.foregroundCanvas, 0, 0, w, h);
+			shadowCtx.restore();
+			if (this.compositeCtx) {
+				this.compositeCtx.drawImage(this.shadowCanvas, 0, 0);
+			}
+		} else if (this.compositeCtx && this.foregroundCanvas) {
+			// Flat path or 3D-without-shadow: stamp foreground directly.
+			this.compositeCtx.drawImage(this.foregroundCanvas, 0, 0);
+		}
 	}
 
 	private updateLayout(webcamFrame?: VideoFrame | null): void {
@@ -564,7 +649,7 @@ export class FrameRenderer {
 	private updateAnimationState(timeMs: number): number {
 		if (!this.cameraContainer || !this.layoutCache) return 0;
 
-		const { region, strength, blendedScale, transition } = findDominantRegion(
+		const { region, strength, blendedScale, rotation3D, transition } = findDominantRegion(
 			this.config.zoomRegions,
 			timeMs,
 			{ connectZooms: true, cursorTelemetry: this.config.cursorTelemetry },
@@ -575,6 +660,11 @@ export class FrameRenderer {
 		let targetFocus = { ...defaultFocus };
 		let targetProgress = 0;
 
+		this.currentRotation3D =
+			region && strength > 0
+				? lerpRotation3D(DEFAULT_ROTATION_3D, rotation3D, strength)
+				: { ...DEFAULT_ROTATION_3D };
+
 		if (region && strength > 0) {
 			const zoomScale = blendedScale ?? ZOOM_DEPTH_SCALES[region.depth];
 			const regionFocus = this.clampFocusToStage(region.focus, region.depth);
@@ -747,38 +837,52 @@ export class FrameRenderer {
 		return this.rasterCanvas;
 	}
 
-	private compositeWithShadows(webcamFrame?: VideoFrame | null): void {
-		if (!this.compositeCanvas || !this.compositeCtx || !this.app) return;
+	// `applyShadowToRecording` is false when the 3D pass will rotate this canvas
+	// next — the shadow gets re-applied after rotation to avoid aliasing.
+	private compositeWithShadows(
+		webcamFrame: VideoFrame | null | undefined,
+		applyShadowToRecording: boolean,
+	): void {
+		if (
+			!this.compositeCanvas ||
+			!this.compositeCtx ||
+			!this.foregroundCanvas ||
+			!this.foregroundCtx ||
+			!this.app
+		)
+			return;
 
 		const videoCanvas = this.isLinux
 			? this.readbackVideoCanvas()
 			: (this.app.canvas as HTMLCanvasElement);
 
-		const ctx = this.compositeCtx;
+		const bgCtx = this.compositeCtx;
+		const fgCtx = this.foregroundCtx;
 		const w = this.compositeCanvas.width;
 		const h = this.compositeCanvas.height;
 
-		// Clear composite canvas
-		ctx.clearRect(0, 0, w, h);
-
-		// Step 1: Draw background layer (with optional blur, not affected by zoom)
+		// Background layer (compositeCanvas): wallpaper only. Stays flat — never
+		// touched by the 3D rotation pass, matching preview behavior.
+		bgCtx.clearRect(0, 0, w, h);
 		if (this.backgroundSprite) {
 			const bgCanvas = this.backgroundSprite;
-
 			if (this.config.showBlur) {
-				ctx.save();
-				ctx.filter = "blur(6px)"; // Canvas blur is weaker than CSS
-				ctx.drawImage(bgCanvas, 0, 0, w, h);
-				ctx.restore();
+				bgCtx.save();
+				bgCtx.filter = "blur(6px)"; // Canvas blur is weaker than CSS
+				bgCtx.drawImage(bgCanvas, 0, 0, w, h);
+				bgCtx.restore();
 			} else {
-				ctx.drawImage(bgCanvas, 0, 0, w, h);
+				bgCtx.drawImage(bgCanvas, 0, 0, w, h);
 			}
 		} else {
 			console.warn("[FrameRenderer] No background sprite found during compositing!");
 		}
 
-		// Draw video layer with shadows on top of background
+		// Foreground (transparent): recording + webcam. Shadow only baked here on
+		// the flat path; the 3D path applies it after rotation (see renderFrame).
+		fgCtx.clearRect(0, 0, w, h);
 		if (
+			applyShadowToRecording &&
 			this.config.showShadow &&
 			this.config.shadowIntensity > 0 &&
 			this.shadowCanvas &&
@@ -788,7 +892,6 @@ export class FrameRenderer {
 			shadowCtx.clearRect(0, 0, w, h);
 			shadowCtx.save();
 
-			// Calculate shadow parameters based on intensity (0-1)
 			const intensity = this.config.shadowIntensity;
 			const baseBlur1 = 48 * intensity;
 			const baseBlur2 = 16 * intensity;
@@ -801,9 +904,9 @@ export class FrameRenderer {
 			shadowCtx.filter = `drop-shadow(0 ${baseOffset}px ${baseBlur1}px rgba(0,0,0,${baseAlpha1})) drop-shadow(0 ${baseOffset / 3}px ${baseBlur2}px rgba(0,0,0,${baseAlpha2})) drop-shadow(0 ${baseOffset / 6}px ${baseBlur3}px rgba(0,0,0,${baseAlpha3}))`;
 			shadowCtx.drawImage(videoCanvas, 0, 0, w, h);
 			shadowCtx.restore();
-			ctx.drawImage(this.shadowCanvas, 0, 0, w, h);
+			fgCtx.drawImage(this.shadowCanvas, 0, 0, w, h);
 		} else {
-			ctx.drawImage(videoCanvas, 0, 0, w, h);
+			fgCtx.drawImage(videoCanvas, 0, 0, w, h);
 		}
 
 		const webcamRect = this.layoutCache?.webcamRect ?? null;
@@ -826,9 +929,9 @@ export class FrameRenderer {
 				sourceAspect > targetAspect ? sourceHeight : Math.round(sourceWidth / targetAspect);
 			const sourceCropX = Math.max(0, Math.round((sourceWidth - sourceCropWidth) / 2));
 			const sourceCropY = Math.max(0, Math.round((sourceHeight - sourceCropHeight) / 2));
-			ctx.save();
+			fgCtx.save();
 			drawCanvasClipPath(
-				ctx,
+				fgCtx,
 				webcamRect.x,
 				webcamRect.y,
 				webcamRect.width,
@@ -837,15 +940,15 @@ export class FrameRenderer {
 				webcamRect.borderRadius,
 			);
 			if (preset.shadow) {
-				ctx.shadowColor = preset.shadow.color;
-				ctx.shadowBlur = preset.shadow.blur;
-				ctx.shadowOffsetX = preset.shadow.offsetX;
-				ctx.shadowOffsetY = preset.shadow.offsetY;
+				fgCtx.shadowColor = preset.shadow.color;
+				fgCtx.shadowBlur = preset.shadow.blur;
+				fgCtx.shadowOffsetX = preset.shadow.offsetX;
+				fgCtx.shadowOffsetY = preset.shadow.offsetY;
 			}
-			ctx.fillStyle = "#000000";
-			ctx.fill();
-			ctx.clip();
-			ctx.drawImage(
+			fgCtx.fillStyle = "#000000";
+			fgCtx.fill();
+			fgCtx.clip();
+			fgCtx.drawImage(
 				webcamFrame as unknown as CanvasImageSource,
 				sourceCropX,
 				sourceCropY,
@@ -856,7 +959,7 @@ export class FrameRenderer {
 				webcamRect.width,
 				webcamRect.height,
 			);
-			ctx.restore();
+			fgCtx.restore();
 		}
 	}
 
@@ -890,7 +993,13 @@ export class FrameRenderer {
 		this.shadowCtx = null;
 		this.compositeCanvas = null;
 		this.compositeCtx = null;
+		this.foregroundCanvas = null;
+		this.foregroundCtx = null;
 		this.rasterCanvas = null;
 		this.rasterCtx = null;
+		if (this.threeDPass) {
+			this.threeDPass.destroy();
+			this.threeDPass = null;
+		}
 	}
 }
diff --git a/src/lib/exporter/threeDPass.ts b/src/lib/exporter/threeDPass.ts
new file mode 100644
index 0000000..5733bd0
--- /dev/null
+++ b/src/lib/exporter/threeDPass.ts
@@ -0,0 +1,356 @@
+import type { Rotation3D } from "@/components/video-editor/types";
+import {
+	computeRotation3DContainScale,
+	isRotation3DIdentity,
+	rotation3DPerspective,
+} from "@/components/video-editor/types";
+
+// CSS uses +y down, WebGL clip space uses +y up. We do all rotation math in CSS
+// convention (top-left origin, +y down) to match the preview, then flip
+// gl_Position.y at the end so WebGL's clip space lands the input's top edge at
+// the top of the output viewport.
+const VERTEX_SHADER = `#version 300 es
+in vec2 aPos;
+in vec2 aUV;
+out vec2 vUV;
+uniform mat4 uMvp;
+uniform vec2 uSize;
+void main() {
+	vUV = aUV;
+	vec2 px = (aPos - 0.5) * uSize;
+	vec4 clip = uMvp * vec4(px, 0.0, 1.0);
+	clip.y = -clip.y;
+	gl_Position = clip;
+}
+`;
+
+const FRAGMENT_SHADER = `#version 300 es
+precision highp float;
+in vec2 vUV;
+out vec4 fragColor;
+uniform sampler2D uTex;
+void main() {
+	fragColor = texture(uTex, vUV);
+}
+`;
+
+function deg2rad(deg: number): number {
+	return (deg * Math.PI) / 180;
+}
+
+function multiplyMat4(a: Float32Array, b: Float32Array): Float32Array {
+	const out = new Float32Array(16);
+	for (let i = 0; i < 4; i += 1) {
+		for (let j = 0; j < 4; j += 1) {
+			let s = 0;
+			for (let k = 0; k < 4; k += 1) {
+				s += a[k * 4 + j] * b[i * 4 + k];
+			}
+			out[i * 4 + j] = s;
+		}
+	}
+	return out;
+}
+
+function rotationXMat(rad: number): Float32Array {
+	const c = Math.cos(rad);
+	const s = Math.sin(rad);
+	return new Float32Array([1, 0, 0, 0, 0, c, s, 0, 0, -s, c, 0, 0, 0, 0, 1]);
+}
+
+function rotationYMat(rad: number): Float32Array {
+	const c = Math.cos(rad);
+	const s = Math.sin(rad);
+	return new Float32Array([c, 0, -s, 0, 0, 1, 0, 0, s, 0, c, 0, 0, 0, 0, 1]);
+}
+
+function rotationZMat(rad: number): Float32Array {
+	const c = Math.cos(rad);
+	const s = Math.sin(rad);
+	return new Float32Array([c, s, 0, 0, -s, c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
+}
+
+function translationMat(x: number, y: number, z: number): Float32Array {
+	return new Float32Array([1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, x, y, z, 1]);
+}
+
+function perspectiveMat(fovY: number, aspect: number, near: number, far: number): Float32Array {
+	const f = 1 / Math.tan(fovY / 2);
+	const nf = 1 / (near - far);
+	return new Float32Array([
+		f / aspect,
+		0,
+		0,
+		0,
+		0,
+		f,
+		0,
+		0,
+		0,
+		0,
+		(far + near) * nf,
+		-1,
+		0,
+		0,
+		2 * far * near * nf,
+		0,
+	]);
+}
+
+function scaleMat(s: number): Float32Array {
+	return new Float32Array([s, 0, 0, 0, 0, s, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
+}
+
+export function buildMvpMatrix(rot: Rotation3D, w: number, h: number): Float32Array {
+	const rx = rotationXMat(deg2rad(rot.rotationX));
+	const ry = rotationYMat(deg2rad(rot.rotationY));
+	const rz = rotationZMat(deg2rad(rot.rotationZ));
+	const rotMat = multiplyMat4(rz, multiplyMat4(ry, rx));
+
+	const perspective = rotation3DPerspective(w, h);
+	const containScale = computeRotation3DContainScale(rot, w, h, perspective);
+	const rotScaled = multiplyMat4(rotMat, scaleMat(containScale));
+
+	const d = perspective;
+	const fovY = 2 * Math.atan2(h / 2, d);
+	const proj = perspectiveMat(fovY, w / h, 0.1, d * 4 + Math.max(w, h));
+	const view = translationMat(0, 0, -d);
+	return multiplyMat4(proj, multiplyMat4(view, rotScaled));
+}
+
+function compileShader(gl: WebGL2RenderingContext, type: number, source: string): WebGLShader {
+	const shader = gl.createShader(type);
+	if (!shader) throw new Error("Failed to create shader");
+	gl.shaderSource(shader, source);
+	gl.compileShader(shader);
+	if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+		const info = gl.getShaderInfoLog(shader);
+		gl.deleteShader(shader);
+		throw new Error(`Shader compile failed: ${info}`);
+	}
+	return shader;
+}
+
+function createProgram(gl: WebGL2RenderingContext): WebGLProgram {
+	const vs = compileShader(gl, gl.VERTEX_SHADER, VERTEX_SHADER);
+	const fs = compileShader(gl, gl.FRAGMENT_SHADER, FRAGMENT_SHADER);
+	const program = gl.createProgram();
+	if (!program) throw new Error("Failed to create program");
+	gl.attachShader(program, vs);
+	gl.attachShader(program, fs);
+	gl.linkProgram(program);
+	if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+		const info = gl.getProgramInfoLog(program);
+		gl.deleteProgram(program);
+		throw new Error(`Program link failed: ${info}`);
+	}
+	gl.deleteShader(vs);
+	gl.deleteShader(fs);
+	return program;
+}
+
+export interface ThreeDPass {
+	apply(srcCanvas: HTMLCanvasElement | OffscreenCanvas, rot: Rotation3D): HTMLCanvasElement;
+	/**
+	 * Reads back the most recent apply() result into a Uint8ClampedArray suitable
+	 * for ImageData. Use this on platforms where drawImage(webglCanvas) is unreliable.
+	 */
+	readPixels(): Uint8ClampedArray;
+	resize(width: number, height: number): void;
+	destroy(): void;
+}
+
+export function createThreeDPass(width: number, height: number): ThreeDPass {
+	const canvas = document.createElement("canvas");
+	canvas.width = width;
+	canvas.height = height;
+	const gl = canvas.getContext("webgl2", { premultipliedAlpha: true, alpha: true });
+	if (!gl) throw new Error("WebGL2 not available for 3D pass");
+
+	const program = createProgram(gl);
+	// biome-ignore lint/correctness/useHookAtTopLevel: WebGL API, not a React hook
+	gl.useProgram(program);
+
+	const aPos = gl.getAttribLocation(program, "aPos");
+	const aUV = gl.getAttribLocation(program, "aUV");
+	const uMvp = gl.getUniformLocation(program, "uMvp");
+	const uSize = gl.getUniformLocation(program, "uSize");
+	const uTex = gl.getUniformLocation(program, "uTex");
+
+	const vao = gl.createVertexArray();
+	gl.bindVertexArray(vao);
+
+	// Quad: two triangles sharing UVs consistently per corner.
+	// pos.y ranges 0 (top of input) → 1 (bottom of input) following CSS convention.
+	// UV.y is inverted (1 - pos.y) so that with UNPACK_FLIP_Y_WEBGL the texture
+	// sample at the top of the input lands at the top of the rendered quad.
+	//   TL: pos(0,0) uv(0,1)   TR: pos(1,0) uv(1,1)
+	//   BL: pos(0,1) uv(0,0)   BR: pos(1,1) uv(1,0)
+	const verts = new Float32Array([
+		// aPos.x, aPos.y, aUV.x, aUV.y
+		0,
+		0,
+		0,
+		1, // TL
+		1,
+		0,
+		1,
+		1, // TR
+		0,
+		1,
+		0,
+		0, // BL
+		0,
+		1,
+		0,
+		0, // BL
+		1,
+		0,
+		1,
+		1, // TR (was 1,0,1,0 — broken)
+		1,
+		1,
+		1,
+		0, // BR
+	]);
+	const vbo = gl.createBuffer();
+	gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
+	gl.bufferData(gl.ARRAY_BUFFER, verts, gl.STATIC_DRAW);
+	gl.enableVertexAttribArray(aPos);
+	gl.vertexAttribPointer(aPos, 2, gl.FLOAT, false, 16, 0);
+	gl.enableVertexAttribArray(aUV);
+	gl.vertexAttribPointer(aUV, 2, gl.FLOAT, false, 16, 8);
+
+	const texture = gl.createTexture();
+	gl.activeTexture(gl.TEXTURE0);
+	gl.bindTexture(gl.TEXTURE_2D, texture);
+	// Plain bilinear, NO mipmaps. Mipmaps pre-blur the texture for downsampling, but
+	// at our moderate rotation angles (≤22°) the receding edge would still pick a
+	// smaller mipmap level, which softens fine details — specifically the few-pixel
+	// rounded-corner anti-alias ramp and the shadow's Gaussian falloff. The result
+	// is "rounding looks like a hard corner / shadow looks grimy". Sampling level 0
+	// directly preserves the source crispness.
+	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+
+	// Anisotropic filtering still helps without mipmaps: at oblique viewing angles
+	// it samples multiple texels along the gradient direction at level 0, recovering
+	// detail that plain bilinear would lose. Cap to the device max (16× typical).
+	const anisoExt =
+		gl.getExtension("EXT_texture_filter_anisotropic") ||
+		gl.getExtension("MOZ_EXT_texture_filter_anisotropic") ||
+		gl.getExtension("WEBKIT_EXT_texture_filter_anisotropic");
+	if (anisoExt) {
+		const maxAniso = gl.getParameter(anisoExt.MAX_TEXTURE_MAX_ANISOTROPY_EXT) as number;
+		gl.texParameterf(gl.TEXTURE_2D, anisoExt.TEXTURE_MAX_ANISOTROPY_EXT, Math.min(16, maxAniso));
+	}
+	gl.uniform1i(uTex, 0);
+
+	let currentSize = { width, height };
+
+	const apply = (
+		srcCanvas: HTMLCanvasElement | OffscreenCanvas,
+		rot: Rotation3D,
+	): HTMLCanvasElement => {
+		gl.viewport(0, 0, currentSize.width, currentSize.height);
+		gl.clearColor(0, 0, 0, 0);
+		gl.clear(gl.COLOR_BUFFER_BIT);
+		gl.useProgram(program);
+		gl.bindVertexArray(vao);
+
+		gl.activeTexture(gl.TEXTURE0);
+		gl.bindTexture(gl.TEXTURE_2D, texture);
+		gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
+		// CRITICAL: premultiply on upload. The source 2D canvas stores non-premultiplied
+		// RGBA (alpha=0 areas have RGB=0). Bilinear filtering between an inside-the-shape
+		// texel (alpha=1, RGB=color) and an outside texel (alpha=0, RGB=0) in
+		// non-premultiplied space yields (color/2, alpha=0.5), which the
+		// premultipliedAlpha:true canvas then interprets as half-strength color — visible
+		// as a dark halo around rounded corners and softened/grimy shadows. Premultiplying
+		// at upload time makes the bilinear math operate in linear-light premultiplied
+		// space, which is exactly the math used for compositing. Edges and shadows then
+		// reproduce the source crisply.
+		gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
+		gl.texImage2D(
+			gl.TEXTURE_2D,
+			0,
+			gl.RGBA,
+			gl.RGBA,
+			gl.UNSIGNED_BYTE,
+			srcCanvas as TexImageSource,
+		);
+
+		const mvp = isRotation3DIdentity(rot)
+			? buildMvpMatrix(
+					{ rotationX: 0, rotationY: 0, rotationZ: 0 },
+					currentSize.width,
+					currentSize.height,
+				)
+			: buildMvpMatrix(rot, currentSize.width, currentSize.height);
+		gl.uniformMatrix4fv(uMvp, false, mvp);
+		gl.uniform2f(uSize, currentSize.width, currentSize.height);
+
+		gl.drawArrays(gl.TRIANGLES, 0, 6);
+		return canvas;
+	};
+
+	const resize = (w: number, h: number) => {
+		if (w === currentSize.width && h === currentSize.height) return;
+		canvas.width = w;
+		canvas.height = h;
+		currentSize = { width: w, height: h };
+	};
+
+	const readPixels = (): Uint8ClampedArray => {
+		const w = currentSize.width;
+		const h = currentSize.height;
+		const buf = new Uint8Array(w * h * 4);
+		gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, buf);
+		// gl.readPixels is bottom-up; flip to top-down for ImageData. We also need
+		// to un-premultiply the alpha here: the framebuffer holds premultiplied RGBA
+		// (we set UNPACK_PREMULTIPLY_ALPHA_WEBGL=true on upload), but ImageData /
+		// putImageData expect non-premultiplied. Without this divide, semi-transparent
+		// pixels get interpreted as darker than they should be.
+		const rowSize = w * 4;
+		const out = new Uint8ClampedArray(buf.length);
+		for (let row = 0; row < h; row += 1) {
+			const src = (h - 1 - row) * rowSize;
+			const dst = row * rowSize;
+			for (let col = 0; col < rowSize; col += 4) {
+				const r = buf[src + col];
+				const g = buf[src + col + 1];
+				const b = buf[src + col + 2];
+				const a = buf[src + col + 3];
+				if (a === 0) {
+					out[dst + col] = 0;
+					out[dst + col + 1] = 0;
+					out[dst + col + 2] = 0;
+					out[dst + col + 3] = 0;
+				} else if (a === 255) {
+					out[dst + col] = r;
+					out[dst + col + 1] = g;
+					out[dst + col + 2] = b;
+					out[dst + col + 3] = 255;
+				} else {
+					const inv = 255 / a;
+					out[dst + col] = Math.min(255, Math.round(r * inv));
+					out[dst + col + 1] = Math.min(255, Math.round(g * inv));
+					out[dst + col + 2] = Math.min(255, Math.round(b * inv));
+					out[dst + col + 3] = a;
+				}
+			}
+		}
+		return out;
+	};
+
+	const destroy = () => {
+		gl.deleteProgram(program);
+		gl.deleteBuffer(vbo);
+		gl.deleteVertexArray(vao);
+		gl.deleteTexture(texture);
+	};
+
+	return { apply, readPixels, resize, destroy };
+}