subframe tick interpollation fix

src/main/java/com/replaymod/pathing/player/AbstractTimelinePlayer.java

@@ -12,6 +12,7 @@ import com.replaymod.replay.ReplayHandler;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
 import com.replaymod.replaystudio.pathing.path.Timeline;
+import com.replaymod.pathing.properties.FovProperty;
 import de.johni0702.minecraft.gui.utils.EventRegistrations;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.render.RenderTickCounter;
@@ -114,6 +115,7 @@ public abstract class AbstractTimelinePlayer extends EventRegistrations {
             if (wasAsyncMode) {
                 replayHandler.getReplaySender().setAsyncMode(true);
             }
+            FovProperty.currentOverride = null;
             unregister();
             return;
         }

src/main/java/com/replaymod/pathing/properties/FovProperty.java

@@ -0,0 +1,48 @@
+package com.replaymod.pathing.properties;
+
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.replaymod.replaystudio.pathing.property.AbstractProperty;
+import com.replaymod.replaystudio.pathing.property.PropertyPart;
+import com.replaymod.replaystudio.pathing.property.PropertyParts;
+import de.johni0702.minecraft.gui.utils.NonNull;
+import org.apache.commons.lang3.tuple.Triple;
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Collections;
+
+public class FovProperty extends AbstractProperty<Triple<Float, Float, Float>> {
+    public static final float DEFAULT_FOV = 70.0f;
+
+    public static volatile Float currentOverride = null;
+
+    public static final FovProperty FOV = new FovProperty("fov", DEFAULT_FOV);
+
+    public final PropertyPart<Triple<Float, Float, Float>> VALUE =
+            new PropertyParts.ForFloatTriple(this, true, PropertyParts.TripleElement.LEFT);
+
+    private FovProperty(String id, float defaultValue) {
+        super(id, "replaymod.gui.editkeyframe." + id, null, Triple.of(defaultValue, 0f, 0f));
+    }
+
+    @Override
+    public Collection<PropertyPart<Triple<Float, Float, Float>>> getParts() {
+        return Collections.singletonList(VALUE);
+    }
+
+    @Override
+    public void applyToGame(Triple<Float, Float, Float> value, @NonNull Object replayHandler) {
+        currentOverride = value.getLeft();
+    }
+
+    @Override
+    public void toJson(JsonWriter writer, Triple<Float, Float, Float> value) throws IOException {
+        writer.value(value.getLeft());
+    }
+
+    @Override
+    public Triple<Float, Float, Float> fromJson(JsonReader reader) throws IOException {
+        return Triple.of((float) reader.nextDouble(), 0f, 0f);
+    }
+}

src/main/java/com/replaymod/pathing/properties/LensProperties.java

@@ -0,0 +1,46 @@
+package com.replaymod.pathing.properties;
+
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.replaymod.replaystudio.pathing.property.AbstractProperty;
+import com.replaymod.replaystudio.pathing.property.PropertyPart;
+import com.replaymod.replaystudio.pathing.property.PropertyParts;
+import de.johni0702.minecraft.gui.utils.NonNull;
+import org.apache.commons.lang3.tuple.Triple;
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Collections;
+
+public class LensProperties extends AbstractProperty<Triple<Float, Float, Float>> {
+    public static final float DEFAULT_FOCAL_DISTANCE  = 5.0f;
+    public static final float DEFAULT_APERTURE_RADIUS = 0.05f;
+
+    public static final LensProperties FOCAL_DISTANCE  = new LensProperties("focalDistance",  DEFAULT_FOCAL_DISTANCE);
+    public static final LensProperties APERTURE_RADIUS = new LensProperties("apertureRadius", DEFAULT_APERTURE_RADIUS);
+
+    public final PropertyPart<Triple<Float, Float, Float>> VALUE =
+            new PropertyParts.ForFloatTriple(this, true, PropertyParts.TripleElement.LEFT);
+
+    private LensProperties(String id, float defaultValue) {
+        super(id, "replaymod.gui.editkeyframe." + id, null, Triple.of(defaultValue, 0f, 0f));
+    }
+
+    @Override
+    public Collection<PropertyPart<Triple<Float, Float, Float>>> getParts() {
+        return Collections.singletonList(VALUE);
+    }
+
+    @Override
+    public void applyToGame(Triple<Float, Float, Float> value, @NonNull Object replayHandler) {}
+
+    @Override
+    public void toJson(JsonWriter writer, Triple<Float, Float, Float> value) throws IOException {
+        writer.value(value.getLeft());
+    }
+
+    @Override
+    public Triple<Float, Float, Float> fromJson(JsonReader reader) throws IOException {
+        return Triple.of((float) reader.nextDouble(), 0f, 0f);
+    }
+}

src/main/java/com/replaymod/render/RenderSettings.java

@@ -25,7 +25,7 @@ import static com.replaymod.render.ReplayModRender.LOGGER;
 
 public class RenderSettings {
     public enum RenderMethod {
-        DEFAULT, STEREOSCOPIC, CUBIC, EQUIRECTANGULAR, ODS, BLEND;
+        DEFAULT, REALLENS, STEREOSCOPIC, CUBIC, EQUIRECTANGULAR, ODS, BLEND;
 
         @Override
         public String toString() {
@@ -155,6 +155,9 @@ public class RenderSettings {
     private final boolean depthMap;
     private final boolean cameraPathExport;
     private final AntiAliasing antiAliasing;
+    private final int lensBlurSamples;
+    private final int motionBlurSubframes;
+    private final float shutterAngle;
 
     private final String exportCommand;
     // We switched from rgb24 to bgra for performance at one point, so for backwards compatibility we need to
@@ -189,6 +192,9 @@ public class RenderSettings {
                 false,
                 false,
                 RenderSettings.AntiAliasing.NONE,
+                16,
+                1,
+                180f,
                 "",
                 RenderSettings.EncodingPreset.MP4_CUSTOM.getValue(),
                 false
@@ -215,6 +221,9 @@ public class RenderSettings {
             boolean depthMap,
             boolean cameraPathExport,
             AntiAliasing antiAliasing,
+            int lensBlurSamples,
+            int motionBlurSubframes,
+            float shutterAngle,
             String exportCommand,
             String exportArguments,
             boolean highPerformance
@@ -238,6 +247,9 @@ public class RenderSettings {
         this.depthMap = depthMap;
         this.cameraPathExport = cameraPathExport;
         this.antiAliasing = antiAliasing;
+        this.lensBlurSamples = lensBlurSamples;
+        this.motionBlurSubframes = motionBlurSubframes;
+        this.shutterAngle = shutterAngle;
         this.exportCommand = exportCommand;
         this.exportArguments = exportArguments;
         this.highPerformance = highPerformance;
@@ -264,6 +276,9 @@ public class RenderSettings {
                 depthMap,
                 cameraPathExport,
                 antiAliasing,
+                lensBlurSamples,
+                motionBlurSubframes,
+                shutterAngle,
                 exportCommand,
                 exportArguments,
                 highPerformance
@@ -457,6 +472,12 @@ public class RenderSettings {
         return antiAliasing;
     }
 
+    public int getLensBlurSamples() { return lensBlurSamples; }
+
+    public int getMotionBlurSubframes() { return motionBlurSubframes; }
+
+    public float getShutterAngle() { return shutterAngle; }
+
     public String getExportCommand() {
         return exportCommand;
     }

src/main/java/com/replaymod/render/capturer/OpenGlFrameCapturer.java

@@ -87,6 +87,11 @@ public abstract class OpenGlFrameCapturer<F extends Frame, D extends CaptureData
     }
 
     protected OpenGlFrame renderFrame(int frameId, float partialTicks, D captureData) {
+        renderWorldOnly(partialTicks, captureData);
+        return captureFrame(frameId, captureData);
+    }
+
+    protected void renderWorldOnly(float partialTicks, D captureData) {
         resizeMainWindow(mc, getFrameWidth(), getFrameHeight());
 
         pushMatrix();
@@ -115,8 +120,6 @@ public abstract class OpenGlFrameCapturer<F extends Frame, D extends CaptureData
         frameBuffer().endWrite();
         //#endif
         popMatrix();
-
-        return captureFrame(frameId, captureData);
     }
 
     protected OpenGlFrame captureFrame(int frameId, D captureData) {

src/main/java/com/replaymod/render/capturer/RealLensOpenGlFrameCapturer.java

@@ -0,0 +1,199 @@
+package com.replaymod.render.capturer;
+
+import com.replaymod.render.frame.OpenGlFrame;
+import com.replaymod.render.frame.RealLensOpenGlFrame;
+import com.replaymod.render.rendering.Channel;
+
+import com.replaymod.replaystudio.pathing.path.Path;
+import com.replaymod.simplepathing.ReplayModSimplePathing;
+import com.replaymod.pathing.properties.LensProperties;
+
+import com.replaymod.render.RenderSettings;
+import com.replaymod.render.utils.ByteBufferPool;
+import com.replaymod.render.utils.AccumulationBuffer;
+import com.replaymod.replay.ReplayHandler;
+import com.replaymod.replay.ReplayModReplay;
+import com.replaymod.replaystudio.pathing.path.Timeline;
+import com.replaymod.simplepathing.SPTimeline;
+
+import com.replaymod.core.mixin.MinecraftAccessor;
+import com.replaymod.pathing.player.ReplayTimer;
+
+import org.apache.commons.lang3.tuple.Triple;
+
+import java.util.Collections;
+import java.util.Map;
+
+import java.util.concurrent.ThreadLocalRandom;
+
+import java.nio.ByteBuffer;
+
+import de.johni0702.minecraft.gui.utils.lwjgl.Dimension;
+
+public class RealLensOpenGlFrameCapturer
+        extends OpenGlFrameCapturer<RealLensOpenGlFrame, RealLensOpenGlFrameCapturer.Data> {
+
+    public static class Data implements CaptureData {
+
+        public float dx, dy, dz;
+        public float yaw, pitch;
+
+        public Data(float dx, float dy, float dz,
+                    float yaw, float pitch) {
+            this.dx = dx;
+            this.dy = dy;
+            this.dz = dz;
+            this.yaw = yaw;
+            this.pitch = pitch;
+        }
+    }
+
+    private static Data[] golden_disk(int n, float r) {
+
+        Data[] points = new Data[n];
+
+        final float GOLDEN_ANGLE = (float) (Math.PI * (3.0 - Math.sqrt(5.0)));
+
+        float random_offset = (float) Math.sqrt(r*r/n) * 0.0f;
+
+        for (int i = 0; i < n; i++) {
+            float rr = r * (float) Math.sqrt((float) i / n);
+            float t = i * GOLDEN_ANGLE;
+            points[i] = new Data(
+                    rr * (float) Math.cos(t) + (ThreadLocalRandom.current().nextFloat() * 2f - 1f) * random_offset,
+                    rr * (float) Math.sin(t) + (ThreadLocalRandom.current().nextFloat() * 2f - 1f) * random_offset,
+                    0f, 0f, 0f
+            );
+        }
+
+        return points;
+    }
+
+    private static final float FOCAL_DISTANCE = 5.0f;
+    private static final float APERTURE_RADIUS = 0.05f;
+    private static final int SAMPLES = 64;
+
+
+
+    private static Data[] calculateCameras(float focal_distance, float aperture_radius, int samples) {
+        Data[] cameras = golden_disk(samples, aperture_radius);
+
+        for (Data cam : cameras) {
+            // Направление от смещённой камеры к фокальной точке (0, 0, FOCAL_DISTANCE)
+            float dirX = 0 - cam.dx;
+            float dirY = 0 - cam.dy;
+            float dirZ = focal_distance - cam.dz;
+
+            // Вычисляем yaw и pitch из направления
+            cam.yaw = (float) -Math.toDegrees(Math.atan2(dirX, dirZ));
+            cam.pitch = (float) Math.toDegrees(Math.atan2(dirY, Math.sqrt(dirX*dirX + dirZ*dirZ)));
+        }
+
+        return cameras;
+    }
+
+    private static Data singleDiskSample(int i, int n, float focalDistance, float apertureRadius) {
+        final float GOLDEN_ANGLE = (float) (Math.PI * (3.0 - Math.sqrt(5.0)));
+
+        float rr = apertureRadius * (float) Math.sqrt((float) i / n);
+        float t  = i * GOLDEN_ANGLE;
+
+        float dx = rr * (float) Math.cos(t);
+        float dy = rr * (float) Math.sin(t);
+        float dz = 0f;
+
+        Data cam = new Data(dx, dy, dz, 0f, 0f);
+
+        float dirX = -dx, dirY = -dy, dirZ = focalDistance - dz;
+        cam.yaw   = (float) -Math.toDegrees(Math.atan2(dirX, dirZ));
+        cam.pitch = (float)  Math.toDegrees(Math.atan2(dirY, Math.sqrt(dirX * dirX + dirZ * dirZ)));
+        return cam;
+    }
+
+    private final Path positionPath;
+    private final Timeline timeline;
+    private final ReplayHandler replayHandler;
+    private final AccumulationBuffer accum = new AccumulationBuffer();
+    private long lastConsumedTime = -1;
+
+    public RealLensOpenGlFrameCapturer(
+            WorldRenderer worldRenderer,
+            RenderInfo renderInfo
+    ) {
+        super(worldRenderer, renderInfo);
+        SPTimeline spTimeline = ReplayModSimplePathing.instance.getCurrentTimeline();
+        this.positionPath  = spTimeline.getPositionPath();
+        this.timeline      = spTimeline.getTimeline();
+        this.replayHandler = ReplayModReplay.instance.getReplayHandler();
+    }
+
+    @Override
+    public Map<Channel, RealLensOpenGlFrame> process() {
+        renderInfo.updateForNextFrame();
+        int frameId = framesDone++;
+
+        RenderSettings settings = renderInfo.getRenderSettings();
+        int   fps     = settings.getFramesPerSecond();
+        int   N       = Math.max(1, settings.getLensBlurSamples());
+        float shutter = settings.getShutterAngle();
+
+        boolean motionBlur = shutter > 0f;
+        double  dt = 1000.0 / fps;
+        double  shutterFrac = motionBlur ? (shutter / 360.0) : 0.0;
+
+        int width  = getFrameWidth();
+        int height = getFrameHeight();
+
+        // перемешанный апертурный индекс (декорреляция DOF <-> время)
+        int[] apertureOrder = new int[N];
+        for (int i = 0; i < N; i++) apertureOrder[i] = i;
+        for (int i = N - 1; i > 0; i--) {
+            int j = ThreadLocalRandom.current().nextInt(i + 1);
+            int tmp = apertureOrder[i]; apertureOrder[i] = apertureOrder[j]; apertureOrder[j] = tmp;
+        }
+
+        accum.begin(width, height);   // float-FBO нужного размера + очистка в 0
+
+        for (int i = 0; i < N; i++) {
+            long tSub;
+            if (motionBlur) {
+                double u = (i + ThreadLocalRandom.current().nextDouble()) / N; // монотонно вперёд
+                tSub = (long) (frameId * dt + u * shutterFrac * dt);
+                timeline.applyToGame(tSub, replayHandler);
+            } else {
+                tSub = (long) (frameId * dt);
+            }
+            long replayTime = replayHandler.getReplaySender().currentTimeStamp();
+            if (lastConsumedTime < 0) lastConsumedTime = replayTime;
+            int pendingTicks = (int) (replayTime / 50L - lastConsumedTime / 50L);
+            if (pendingTicks > 0) {
+                ReplayTimer timer = (ReplayTimer) ((MinecraftAccessor) mc).getTimer();
+                while (pendingTicks-- > 0) {
+                    mc.tick();              // двигает prev/cur частиц через границу тика
+                    timer.tickDelta -= 1f;  // компенсация: VideoRenderer не должен тикнуть повторно
+                }
+            }
+            if (replayTime > lastConsumedTime) lastConsumedTime = replayTime;
+            float subPartialTicks = (float) ((replayTime % 50L) / 50.0);
+
+            float focal = positionPath.getValue(LensProperties.FOCAL_DISTANCE,  tSub).map(Triple::getLeft).orElse(5.0f);
+            float apert = positionPath.getValue(LensProperties.APERTURE_RADIUS, tSub).map(Triple::getLeft).orElse(0.05f);
+            Data cam = singleDiskSample(apertureOrder[i], N, focal, apert);
+
+            renderWorldOnly(subPartialTicks, cam);           // мир -> главный FBO, без readback
+            accum.add(frameBuffer().getColorAttachment());   // прибавить на GPU
+        }
+
+        ByteBuffer out = accum.finishAveraged(N);            // ОДИН readback + деление на N
+        accum.unbind();                                      // вернуться в главный FBO
+
+        OpenGlFrame averaged = new OpenGlFrame(frameId, new Dimension(width, height), 4, out);
+        return Collections.singletonMap(Channel.BRGA, new RealLensOpenGlFrame(new OpenGlFrame[]{ averaged }));
+    }
+
+    @Override
+    public void close() throws java.io.IOException {
+        super.close();
+        accum.close();
+    }
+}

src/main/java/com/replaymod/render/frame/RealLensOpenGlFrame.java

@@ -0,0 +1,39 @@
+package com.replaymod.render.frame;
+
+import com.replaymod.render.rendering.Frame;
+import org.apache.commons.lang3.Validate;
+
+public class RealLensOpenGlFrame implements Frame {
+
+    private final OpenGlFrame[] frames;
+
+    public RealLensOpenGlFrame(OpenGlFrame[] frames) {
+        Validate.notNull(frames, "frames");
+        Validate.isTrue(frames.length > 0, "frames must not be empty");
+
+        int frameId = frames[0].getFrameId();
+        int remaining = frames[0].getByteBuffer().remaining();
+
+        for (OpenGlFrame frame : frames) {
+            Validate.isTrue(
+                    frame.getFrameId() == frameId,
+                    "Frame ids do not match."
+            );
+            Validate.isTrue(
+                    frame.getByteBuffer().remaining() == remaining,
+                    "Buffer sizes do not match."
+            );
+        }
+
+        this.frames = frames;
+    }
+
+    @Override
+    public int getFrameId() {
+        return frames[0].getFrameId();
+    }
+
+    public OpenGlFrame[] getFrames() {
+        return frames;
+    }
+}

src/main/java/com/replaymod/render/gui/GuiExportFailed.java

@@ -101,6 +101,9 @@ public class GuiExportFailed extends GuiScreen {
                     oldSettings.isDepthMap(),
                     oldSettings.isCameraPathExport(),
                     oldSettings.getAntiAliasing(),
+                    oldSettings.getLensBlurSamples(),
+                    oldSettings.getMotionBlurSubframes(),
+                    oldSettings.getShutterAngle(),
                     oldSettings.getExportCommand(),
                     oldSettings.getEncodingPreset().getValue(),
                     oldSettings.isHighPerformance()

src/main/java/com/replaymod/render/gui/GuiRenderSettings.java

@@ -103,6 +103,9 @@ public class GuiRenderSettings extends AbstractGuiPopup<GuiRenderSettings> {
 
     public final GuiNumberField videoWidth = new GuiNumberField().setSize(50, 20).setMinValue(1).setValidateOnFocusChange(true);
     public final GuiNumberField videoHeight = new GuiNumberField().setSize(50, 20).setMinValue(1).setValidateOnFocusChange(true);
+    public final GuiNumberField lensBlurSamples = new GuiNumberField().setSize(50, 20).setMinValue(1).setMaxValue(512).setValidateOnFocusChange(true);
+    public final GuiNumberField motionBlurSubframes = new GuiNumberField().setSize(50, 20).setMinValue(1).setMaxValue(512).setValidateOnFocusChange(true);
+    public final GuiNumberField shutterAngle = new GuiNumberField().setSize(50, 20).setMinValue(0).setMaxValue(360).setValidateOnFocusChange(true);
     public final GuiSlider frameRateSlider = new GuiSlider().onValueChanged(new Runnable() {
         @Override
         public void run() {
@@ -199,7 +202,9 @@ public class GuiRenderSettings extends AbstractGuiPopup<GuiRenderSettings> {
                             injectSphericalMetadata, sphericalFovSlider,
                             depthMap, new GuiLabel(),
                             cameraPathExport, new GuiLabel(),
-                            new GuiLabel().setI18nText("replaymod.gui.rendersettings.antialiasing"), antiAliasingDropdown));
+                            new GuiLabel().setI18nText("replaymod.gui.rendersettings.antialiasing"), antiAliasingDropdown,
+                            new GuiLabel().setI18nText("replaymod.gui.rendersettings.lensblursamples"), lensBlurSamples,
+                            new GuiLabel().setI18nText("replaymod.gui.rendersettings.shutterangle"), shutterAngle));
 
     public final GuiTextField exportCommand = new GuiTextField().setI18nHint("replaymod.gui.rendersettings.command")
             .setSize(55, 20).setMaxLength(100).onTextChanged((old) -> updateInputs());
@@ -416,6 +421,10 @@ public class GuiRenderSettings extends AbstractGuiPopup<GuiRenderSettings> {
         boolean commandChanged = !exportCommand.getText().isEmpty();
         boolean argsChanged = !encodingPresetDropdown.getSelectedValue().getValue().equals(exportArguments.getText());
         exportReset.setEnabled(commandChanged || argsChanged);
+        boolean isRealLens = renderMethod == RenderSettings.RenderMethod.REALLENS;
+        lensBlurSamples.setEnabled(isRealLens);
+        motionBlurSubframes.setEnabled(isRealLens);
+        shutterAngle.setEnabled(isRealLens);
     }
 
     protected String updateResolution() {
@@ -542,6 +551,9 @@ public class GuiRenderSettings extends AbstractGuiPopup<GuiRenderSettings> {
         depthMap.setChecked(settings.isDepthMap());
         cameraPathExport.setChecked(settings.isCameraPathExport());
         antiAliasingDropdown.setSelected(settings.getAntiAliasing());
+        lensBlurSamples.setValue(settings.getLensBlurSamples());
+        motionBlurSubframes.setValue(settings.getMotionBlurSubframes());
+        shutterAngle.setValue((int) settings.getShutterAngle());
         exportCommand.setText(settings.getExportCommand());
         String exportArguments = settings.getExportArguments();
         if (exportArguments == null || settings.getEncodingPreset() == null || invalidEncodingPreset) {
@@ -575,6 +587,9 @@ public class GuiRenderSettings extends AbstractGuiPopup<GuiRenderSettings> {
                 depthMap.isChecked() && (serialize || depthMap.isEnabled()),
                 cameraPathExport.isChecked(),
                 serialize || antiAliasingDropdown.isEnabled() ? antiAliasingDropdown.getSelectedValue() : RenderSettings.AntiAliasing.NONE,
+                lensBlurSamples.getInteger(),
+                motionBlurSubframes.getInteger(),
+                (float) shutterAngle.getInteger(),
                 exportCommand.getText(),
                 exportArguments.getText(),
                 highPerformance

src/main/java/com/replaymod/render/mixin/Mixin_DynamicFov.java

@@ -0,0 +1,38 @@
+package com.replaymod.render.mixin;
+
+import com.replaymod.pathing.properties.FovProperty;
+import net.minecraft.client.render.GameRenderer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
+
+@Mixin(GameRenderer.class)
+public abstract class Mixin_DynamicFov {
+    private static final String METHOD = "getBasicProjectionMatrix";
+    //#if MC>=11903
+    //#if MC>=12005
+    //$$ private static final String TARGET = "Lorg/joml/Matrix4f;perspective(FFFF)Lorg/joml/Matrix4f;";
+    //#else
+    //$$ private static final String TARGET = "Lorg/joml/Matrix4f;setPerspective(FFFF)Lorg/joml/Matrix4f;";
+    //#endif
+    //$$ private static final boolean TARGET_REMAP = false;
+    //#else
+    private static final String TARGET = "Lnet/minecraft/util/math/Matrix4f;viewboxMatrix(DFFF)Lnet/minecraft/util/math/Matrix4f;";
+    private static final boolean TARGET_REMAP = true;
+    //#endif
+
+    @ModifyArg(method = METHOD, at = @At(value = "INVOKE", target = TARGET, remap = TARGET_REMAP), index = 0)
+    //#if MC>=11903
+    //$$ private float replayModRender_dynamicFov(float fovY) {
+    //$$     Float override = FovProperty.currentOverride;
+    //$$     if (override == null) return fovY;
+    //$$     return (float) Math.toRadians(Math.max(1f, Math.min(179f, override)));
+    //$$ }
+    //#else
+    private double replayModRender_dynamicFov(double fovY) {
+        Float override = FovProperty.currentOverride;
+        if (override == null) return fovY;
+        return Math.max(1.0, Math.min(179.0, override));
+    }
+    //#endif
+}

src/main/java/com/replaymod/render/mixin/Mixin_RealLens_Camera.java

@@ -0,0 +1,61 @@
+package com.replaymod.render.mixin;
+
+import com.replaymod.render.capturer.RealLensOpenGlFrameCapturer;
+import com.replaymod.render.hooks.EntityRendererHandler;
+import net.minecraft.client.render.GameRenderer;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.client.util.math.Vector3f;
+import net.minecraft.util.math.Matrix4f;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+//#if MC>=12005
+//$$ import com.llamalad7.mixinextras.injector.ModifyExpressionValue;
+//$$ import org.joml.Matrix4f;
+//#endif
+
+@Mixin(GameRenderer.class)
+public abstract class Mixin_RealLens_Camera implements EntityRendererHandler.IEntityRenderer {
+
+    //#if MC>=12005
+    //#if MC>=12100
+    //$$ @ModifyExpressionValue(method = "renderWorld", at = @At(value = "INVOKE", target = "Lorg/joml/Matrix4f;rotation(Lorg/joml/Quaternionfc;)Lorg/joml/Matrix4f;"))
+    //#else
+    //$$ @ModifyExpressionValue(method = "renderWorld", at = @At(value = "INVOKE", target = "Lorg/joml/Matrix4f;rotationXYZ(FFF)Lorg/joml/Matrix4f;"))
+    //#endif
+    //$$ private Matrix4f realLens_applyCameraTransform(Matrix4f matrix) {
+    //#else
+    @Inject(method = "renderWorld", at = @At("HEAD"))
+    private void realLens_applyCameraTransform(float partialTicks, long frameStartNano, MatrixStack matrixStack, CallbackInfo ci) {
+        //#endif
+        EntityRendererHandler handler = replayModRender_getHandler();
+        if (!(handler != null && handler.data instanceof RealLensOpenGlFrameCapturer.Data)) {
+            //#if MC>=12005
+            //$$ return matrix;
+            //#else
+            return;
+            //#endif
+        }
+
+        RealLensOpenGlFrameCapturer.Data cam = (RealLensOpenGlFrameCapturer.Data) handler.data;
+
+        //#if MC>=12005
+        //$$ matrix.translateLocal(cam.dx, cam.dy, cam.dz);
+        //$$ return matrix;
+        //#else
+        matrixStack.translate(cam.dx, cam.dy, cam.dz);
+        //#endif
+
+        // In Mixin_RealLens_Camera, add rotation after translation
+        //#if MC>=12005
+        //$$ matrix.rotateLocal((float) Math.toRadians(cam.pitch), 1, 0, 0);
+        //$$ matrix.rotateLocal((float) Math.toRadians(cam.yaw), 0, 1, 0);
+        //#else
+        matrixStack.multiply(Vector3f.POSITIVE_X.getDegreesQuaternion(cam.pitch));
+        matrixStack.multiply(Vector3f.POSITIVE_Y.getDegreesQuaternion(cam.yaw));
+        //#endif
+    }
+}

src/main/java/com/replaymod/render/processor/RealLensToBitmapProcessor.java

@@ -0,0 +1,101 @@
+package com.replaymod.render.processor;
+
+import com.replaymod.render.frame.BitmapFrame;
+import com.replaymod.render.frame.OpenGlFrame;
+import com.replaymod.render.frame.RealLensOpenGlFrame;
+import com.replaymod.render.utils.ByteBufferPool;
+import de.johni0702.minecraft.gui.utils.lwjgl.Dimension;
+
+import java.nio.ByteBuffer;
+
+import static com.replaymod.render.utils.Utils.openGlBytesToBitmap;
+
+public class RealLensToBitmapProcessor
+        extends AbstractFrameProcessor<RealLensOpenGlFrame, BitmapFrame> {
+
+    @Override
+    public BitmapFrame process(RealLensOpenGlFrame rawFrame) {
+
+        OpenGlFrame[] frames = rawFrame.getFrames();
+        OpenGlFrame first = frames[0];
+
+        int width = first.getSize().getWidth();
+        int height = first.getSize().getHeight();
+        int bpp = first.getBytesPerPixel();
+
+        int totalBytes = width * height * bpp;
+
+        int[] accumulator = new int[totalBytes];
+
+        ByteBuffer converted = ByteBufferPool.allocate(totalBytes);
+
+        try {
+
+            for (OpenGlFrame frame : frames) {
+
+                converted.clear();
+
+                // BGRA -> bitmap layout (still BGRA at this point)
+                openGlBytesToBitmap(
+                        frame,
+                        0,
+                        0,
+                        converted,
+                        width
+                );
+
+                converted.rewind();
+
+                // accumulate per channel with B <-> R swap
+                for (int i = 0; i < totalBytes; i += bpp) {
+
+                    int b = converted.get(i) & 0xFF;
+                    int g = converted.get(i + 1) & 0xFF;
+                    int r = converted.get(i + 2) & 0xFF;
+                    int a = (bpp == 4) ? (converted.get(i + 3) & 0xFF) : 255;
+
+                    // swap R and B here
+                    accumulator[i]     += b;
+                    accumulator[i + 1] += g;
+                    accumulator[i + 2] += r;
+
+                    if (bpp == 4) {
+                        accumulator[i + 3] += a;
+                    }
+                }
+            }
+
+            ByteBuffer output = ByteBufferPool.allocate(totalBytes);
+
+            int samples = frames.length;
+
+            for (int i = 0; i < totalBytes; i += bpp) {
+
+                output.put((byte) (accumulator[i]     / samples)); // R
+                output.put((byte) (accumulator[i + 1] / samples)); // G
+                output.put((byte) (accumulator[i + 2] / samples)); // B
+
+                if (bpp == 4) {
+                    output.put((byte) (accumulator[i + 3] / samples)); // A
+                }
+            }
+
+            output.rewind();
+
+            return new BitmapFrame(
+                    rawFrame.getFrameId(),
+                    new Dimension(width, height),
+                    bpp,
+                    output
+            );
+
+        } finally {
+
+            ByteBufferPool.release(converted);
+
+            for (OpenGlFrame frame : frames) {
+                ByteBufferPool.release(frame.getByteBuffer());
+            }
+        }
+    }
+}

src/main/java/com/replaymod/render/rendering/Pipelines.java

@@ -24,6 +24,9 @@ import com.replaymod.render.processor.ODSToBitmapProcessor;
 import com.replaymod.render.processor.OpenGlToBitmapProcessor;
 import com.replaymod.render.processor.StereoscopicToBitmapProcessor;
 import com.replaymod.render.utils.PixelBufferObject;
+import com.replaymod.render.capturer.RealLensOpenGlFrameCapturer;
+import com.replaymod.render.frame.RealLensOpenGlFrame;
+import com.replaymod.render.processor.RealLensToBitmapProcessor;
 
 import java.util.Map;
 
@@ -32,6 +35,8 @@ public class Pipelines {
         switch (method) {
             case DEFAULT:
                 return newDefaultPipeline(renderInfo, consumer);
+            case REALLENS:
+                return newRealLensPipeline(renderInfo, consumer);
             case STEREOSCOPIC:
                 return newStereoscopicPipeline(renderInfo, consumer);
             case CUBIC:
@@ -58,6 +63,15 @@ public class Pipelines {
         return new Pipeline<>(worldRenderer, capturer, new OpenGlToBitmapProcessor(), consumer);
     }
 
+    public static Pipeline<RealLensOpenGlFrame, BitmapFrame> newRealLensPipeline(
+            RenderInfo renderInfo, FrameConsumer<BitmapFrame> consumer) {
+        RenderSettings settings = renderInfo.getRenderSettings();
+        WorldRenderer worldRenderer = new EntityRendererHandler(settings, renderInfo);
+        FrameCapturer<RealLensOpenGlFrame> capturer =
+                new RealLensOpenGlFrameCapturer(worldRenderer, renderInfo);
+        return new Pipeline<>(worldRenderer, capturer, new RealLensToBitmapProcessor(), consumer);
+    }
+
     public static Pipeline<StereoscopicOpenGlFrame, BitmapFrame> newStereoscopicPipeline(RenderInfo renderInfo, FrameConsumer<BitmapFrame> consumer) {
         RenderSettings settings = renderInfo.getRenderSettings();
         WorldRenderer worldRenderer = new EntityRendererHandler(settings, renderInfo);

src/main/java/com/replaymod/render/utils/AccumulationBuffer.java

@@ -0,0 +1,140 @@
+package com.replaymod.render.utils;
+
+//#if MC<12105
+import com.mojang.blaze3d.systems.RenderSystem;
+import com.mojang.blaze3d.systems.VertexSorter;
+import net.minecraft.client.render.BufferBuilder;
+import net.minecraft.client.render.Tessellator;
+import net.minecraft.client.render.VertexFormats;
+import net.minecraft.client.render.GameRenderer;
+import org.joml.Matrix4f;
+import org.lwjgl.opengl.GL11;
+import org.lwjgl.opengl.GL12;
+import org.lwjgl.opengl.GL30;
+import org.lwjgl.opengl.GL33;
+
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+
+public class AccumulationBuffer {
+    private int fbo = 0;
+    private int tex = 0;
+    private int width = 0;
+    private int height = 0;
+
+    public void begin(int width, int height) {
+        if (fbo == 0 || width != this.width || height != this.height) {
+            allocate(width, height);
+        }
+        GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+        GL11.glViewport(0, 0, width, height);
+        GL11.glClearColor(0f, 0f, 0f, 0f);
+        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
+    }
+
+    private void allocate(int width, int height) {
+        close();
+        this.width = width;
+        this.height = height;
+
+        // Сырые GL-вызовы не обновляют кэш GlStateManager -> сохраняем и
+        // возвращаем привязки, иначе MC пропустит ребинд (текстура неба и т.п.).
+        int prevTex = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
+        int prevFbo = GL11.glGetInteger(GL30.GL_FRAMEBUFFER_BINDING);
+
+        tex = GL11.glGenTextures();
+        GL11.glBindTexture(GL11.GL_TEXTURE_2D, tex);
+        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
+        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
+        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL30.GL_RGBA32F, width, height, 0,
+                GL11.GL_RGBA, GL11.GL_FLOAT, (ByteBuffer) null);
+
+        fbo = GL30.glGenFramebuffers();
+        GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+        GL30.glFramebufferTexture2D(GL30.GL_FRAMEBUFFER, GL30.GL_COLOR_ATTACHMENT0,
+                GL11.GL_TEXTURE_2D, tex, 0);
+
+        GL11.glBindTexture(GL11.GL_TEXTURE_2D, prevTex);
+        GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, prevFbo);
+    }
+
+    public void add(int srcColorTex) {
+        GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+        GL11.glViewport(0, 0, width, height);
+
+        RenderSystem.disableDepthTest();
+        RenderSystem.depthMask(false);
+        RenderSystem.enableBlend();
+        RenderSystem.blendFunc(GL11.GL_ONE, GL11.GL_ONE);
+        RenderSystem.setShaderColor(1f, 1f, 1f, 1f);
+
+        Matrix4f savedProj = RenderSystem.getProjectionMatrix();
+        VertexSorter savedSorter = RenderSystem.getVertexSorting();
+        RenderSystem.setProjectionMatrix(new Matrix4f(), VertexSorter.BY_Z);
+        RenderSystem.getModelViewStack().push();
+        RenderSystem.getModelViewStack().loadIdentity();
+        RenderSystem.applyModelViewMatrix();
+
+        RenderSystem.setShader(GameRenderer::getPositionTexProgram);
+        RenderSystem.setShaderTexture(0, srcColorTex);
+
+        int prevTex = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
+        GL11.glBindTexture(GL11.GL_TEXTURE_2D, srcColorTex);
+        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL33.GL_TEXTURE_SWIZZLE_A, GL11.GL_ONE);
+        GL11.glBindTexture(GL11.GL_TEXTURE_2D, prevTex);
+
+        Tessellator tessellator = Tessellator.getInstance();
+        BufferBuilder bb = tessellator.getBuffer();
+        bb.begin(GL11.GL_QUADS, VertexFormats.POSITION_TEXTURE);
+        bb.vertex(-1f, -1f, 0f).texture(0f, 0f).next();
+        bb.vertex( 1f, -1f, 0f).texture(1f, 0f).next();
+        bb.vertex( 1f,  1f, 0f).texture(1f, 1f).next();
+        bb.vertex(-1f,  1f, 0f).texture(0f, 1f).next();
+        tessellator.draw();
+
+        prevTex = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);
+        GL11.glBindTexture(GL11.GL_TEXTURE_2D, srcColorTex);
+        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL33.GL_TEXTURE_SWIZZLE_A, GL11.GL_ALPHA);
+        GL11.glBindTexture(GL11.GL_TEXTURE_2D, prevTex);
+
+        RenderSystem.getModelViewStack().pop();
+        RenderSystem.applyModelViewMatrix();
+        RenderSystem.setProjectionMatrix(savedProj, savedSorter);
+        RenderSystem.disableBlend();
+        RenderSystem.depthMask(true);
+        RenderSystem.enableDepthTest();
+
+        RenderSystem.defaultBlendFunc();
+    }
+
+    public ByteBuffer finishAveraged(int samples) {
+        GL30.glBindFramebuffer(GL30.GL_FRAMEBUFFER, fbo);
+
+        int pixels = width * height;
+        FloatBuffer fb = org.lwjgl.BufferUtils.createFloatBuffer(pixels * 4);
+        GL11.glReadPixels(0, 0, width, height, GL12.GL_BGRA, GL11.GL_FLOAT, fb);
+
+        ByteBuffer out = ByteBufferPool.allocate(pixels * 4);
+        float inv = 1f / samples;
+        for (int i = 0; i < pixels * 4; i++) {
+            float v = fb.get(i) * inv;
+            int b = (int) (v * 255f + 0.5f);
+            if (b < 0) b = 0; else if (b > 255) b = 255;
+            out.put((byte) b);
+        }
+        out.rewind();
+        return out;
+    }
+
+    public void unbind() {
+        net.minecraft.client.MinecraftClient.getInstance().getFramebuffer().beginWrite(true);
+    }
+
+    public void close() {
+        if (fbo != 0) { GL30.glDeleteFramebuffers(fbo); fbo = 0; }
+        if (tex != 0) { GL11.glDeleteTextures(tex); tex = 0; }
+    }
+}
+//#else
+//$$ // TODO: путь под MC>=12105 (GpuDevice/CommandEncoder) — заполнить позже.
+//#endif

src/main/java/com/replaymod/simplepathing/SPTimeline.java

@@ -9,6 +9,8 @@ import com.google.gson.stream.JsonWriter;
 import com.replaymod.pathing.properties.CameraProperties;
 import com.replaymod.pathing.properties.SpectatorProperty;
 import com.replaymod.pathing.properties.TimestampProperty;
+import com.replaymod.pathing.properties.LensProperties;
+import com.replaymod.pathing.properties.FovProperty;
 import com.replaymod.replaystudio.pathing.PathingRegistry;
 import com.replaymod.replaystudio.pathing.change.AddKeyframe;
 import com.replaymod.replaystudio.pathing.change.Change;
@@ -172,6 +174,9 @@ public class SPTimeline implements PathingRegistry {
         UpdateKeyframeProperties.Builder builder = UpdateKeyframeProperties.create(path, keyframe);
         builder.setValue(CameraProperties.POSITION, Triple.of(posX, posY, posZ));
         builder.setValue(CameraProperties.ROTATION, Triple.of(yaw, pitch, roll));
+        builder.setValue(LensProperties.FOCAL_DISTANCE,  Triple.of(LensProperties.DEFAULT_FOCAL_DISTANCE, 0f, 0f));
+        builder.setValue(LensProperties.APERTURE_RADIUS, Triple.of(LensProperties.DEFAULT_APERTURE_RADIUS, 0f, 0f));
+        builder.setValue(FovProperty.FOV, Triple.of(FovProperty.DEFAULT_FOV, 0f, 0f));
         if (spectated != -1) {
             builder.setValue(SpectatorProperty.PROPERTY, spectated);
         }
@@ -307,6 +312,28 @@ public class SPTimeline implements PathingRegistry {
         timeline.pushChange(change);
     }
 
+    public Change updateLensProperties(long time, float focalDistance, float apertureRadius) {
+        Keyframe keyframe = positionPath.getKeyframe(time);
+        Preconditions.checkState(keyframe != null, "Keyframe does not exist");
+
+        Change change = UpdateKeyframeProperties.create(positionPath, keyframe)
+                .setValue(LensProperties.FOCAL_DISTANCE,  Triple.of(focalDistance, 0f, 0f))
+                .setValue(LensProperties.APERTURE_RADIUS, Triple.of(apertureRadius, 0f, 0f))
+                .done();
+        change.apply(timeline);
+        return change;
+    }
+
+    public Change updateFov(long time, float fov) {
+        Keyframe keyframe = positionPath.getKeyframe(time);
+        Preconditions.checkState(keyframe != null, "Keyframe does not exist");
+        Change change = UpdateKeyframeProperties.create(positionPath, keyframe)
+                .setValue(FovProperty.FOV, Triple.of(fov, 0f, 0f))
+                .done();
+        change.apply(timeline);
+        return change;
+    }
+
     public Change setInterpolatorToDefault(long time) {
         LOGGER.debug("Setting interpolator of position keyframe at {} to the default", time);
 
@@ -451,6 +478,9 @@ public class SPTimeline implements PathingRegistry {
                     // otherwise create a new interpolator
                     interpolator = new LinearInterpolator();
                     interpolator.registerProperty(SpectatorProperty.PROPERTY);
+                    interpolator.registerProperty(LensProperties.FOCAL_DISTANCE);
+                    interpolator.registerProperty(LensProperties.APERTURE_RADIUS);
+                    interpolator.registerProperty(FovProperty.FOV);
                 }
                 // Now that we have an interpolator, set it for the current segment
                 updates.put(segment, interpolator);
@@ -569,6 +599,9 @@ public class SPTimeline implements PathingRegistry {
     private Interpolator registerPositionInterpolatorProperties(Interpolator interpolator) {
         interpolator.registerProperty(CameraProperties.POSITION);
         interpolator.registerProperty(CameraProperties.ROTATION);
+        interpolator.registerProperty(LensProperties.FOCAL_DISTANCE);
+        interpolator.registerProperty(LensProperties.APERTURE_RADIUS);
+        interpolator.registerProperty(FovProperty.FOV);
         return interpolator;
     }
 
@@ -591,6 +624,9 @@ public class SPTimeline implements PathingRegistry {
         timeline.registerProperty(CameraProperties.POSITION);
         timeline.registerProperty(CameraProperties.ROTATION);
         timeline.registerProperty(SpectatorProperty.PROPERTY);
+        timeline.registerProperty(LensProperties.FOCAL_DISTANCE);
+        timeline.registerProperty(LensProperties.APERTURE_RADIUS);
+        timeline.registerProperty(FovProperty.FOV);
         timeline.registerProperty(ExplicitInterpolationProperty.PROPERTY);
 
         return timeline;

src/main/java/com/replaymod/simplepathing/gui/GuiEditKeyframe.java

@@ -145,17 +145,24 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
     protected abstract Change save();
 
     public static class Spectator extends GuiEditKeyframe<Spectator> {
+        public final GuiLensKeyframePanel lensPanel = new GuiLensKeyframePanel();
+
         public Spectator(GuiPathing gui, SPPath path, long keyframe) {
             super(gui, path, keyframe, "spec");
 
-            link(timeMinField, timeSecField, timeMSecField);
+            inputs.setLayout(new VerticalLayout().setSpacing(10)).addElements(new VerticalLayout.Data(0.5, false), lensPanel.load(this.keyframe));
+
+            link(lensPanel.focalDistanceField, lensPanel.apertureRadiusField, lensPanel.fovField, timeMinField, timeSecField, timeMSecField);
 
             popup.invokeAll(IGuiLabel.class, e -> e.setColor(Colors.BLACK));
         }
 
         @Override
         protected Change save() {
-            return CombinedChange.createFromApplied();
+            SPTimeline timeline = guiPathing.getMod().getCurrentTimeline();
+            Change lensChange = timeline.updateLensProperties(time, lensPanel.getFocalDistance(), lensPanel.getApertureRadius());
+            Change fovChange  = timeline.updateFov(time, lensPanel.getFov());
+            return CombinedChange.createFromApplied(lensChange, fovChange);
         }
 
         @Override
@@ -216,6 +223,8 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
 
         public final InterpolationPanel interpolationPanel = new InterpolationPanel();
 
+        public final GuiLensKeyframePanel lensPanel = new GuiLensKeyframePanel();
+
         {
             GuiPanel positionInputs = new GuiPanel()
                     .setLayout(new GridLayout().setCellsEqualSize(false).setColumns(4).setSpacingX(3).setSpacingY(5))
@@ -225,10 +234,11 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.ypos"), yField,
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.campitch"), pitchField,
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.zpos"), zField,
-                            new GuiLabel().setI18nText("replaymod.gui.editkeyframe.camroll"), rollField);
+                            new GuiLabel().setI18nText("replaymod.gui.editkeyframe.camroll"), rollField
+                    );
 
             inputs.setLayout(new VerticalLayout().setSpacing(10)).addElements(new VerticalLayout.Data(0.5, false),
-                    positionInputs, interpolationPanel);
+                    positionInputs, lensPanel, interpolationPanel);
         }
 
         public Position(GuiPathing gui, SPPath path, long keyframe) {
@@ -245,7 +255,9 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
                 rollField.setValue(rot.getRight());
             });
 
-            link(xField, yField, zField, yawField, pitchField, rollField, timeMinField, timeSecField, timeMSecField);
+            lensPanel.load(this.keyframe);
+
+            link(xField, yField, zField, yawField, pitchField, rollField, lensPanel.focalDistanceField, lensPanel.apertureRadiusField, lensPanel.fovField, timeMinField, timeSecField, timeMSecField);
 
             popup.invokeAll(IGuiLabel.class, e -> e.setColor(Colors.BLACK));
         }
@@ -257,16 +269,20 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
                     xField.getDouble(), yField.getDouble(), zField.getDouble(),
                     yawField.getFloat(), pitchField.getFloat(), rollField.getFloat()
             );
+            Change lensChange = timeline.updateLensProperties(time,
+                    lensPanel.getFocalDistance(), lensPanel.getApertureRadius());
+            Change fovChange = timeline.updateFov(time, lensPanel.getFov());
             if (interpolationPanel.getSettingsPanel() == null) {
                 // The last keyframe doesn't have interpolator settings because there is no segment following it
-                return positionChange;
+                return CombinedChange.createFromApplied(positionChange, lensChange, fovChange);
             }
             Interpolator interpolator = interpolationPanel.getSettingsPanel().createInterpolator();
             if (interpolationPanel.getInterpolatorType() == InterpolatorType.DEFAULT) {
-                return CombinedChange.createFromApplied(positionChange, timeline.setInterpolatorToDefault(time),
+                return CombinedChange.createFromApplied(positionChange, lensChange, fovChange,
-                        timeline.setDefaultInterpolator(interpolator));
+                        timeline.setInterpolatorToDefault(time), timeline.setDefaultInterpolator(interpolator));
             } else {
-                return CombinedChange.createFromApplied(positionChange, timeline.setInterpolator(time, interpolator));
+                return CombinedChange.createFromApplied(positionChange, lensChange, fovChange,
+                        timeline.setInterpolator(time, interpolator));
             }
         }
 

src/main/java/com/replaymod/simplepathing/gui/GuiLensKeyframePanel.java

@@ -0,0 +1,44 @@
+package com.replaymod.simplepathing.gui;
+
+import com.replaymod.pathing.properties.LensProperties;
+import com.replaymod.pathing.properties.FovProperty;
+import com.replaymod.replaystudio.pathing.path.Keyframe;
+import de.johni0702.minecraft.gui.container.AbstractGuiContainer;
+import de.johni0702.minecraft.gui.element.GuiLabel;
+import de.johni0702.minecraft.gui.element.GuiNumberField;
+import de.johni0702.minecraft.gui.layout.GridLayout;
+import org.apache.commons.lang3.tuple.Triple;
+
+public class GuiLensKeyframePanel extends AbstractGuiContainer<GuiLensKeyframePanel> {
+    public final GuiNumberField focalDistanceField =
+            new GuiNumberField().setValidateOnFocusChange(true).setSize(60, 20).setPrecision(3).setMinValue(0);
+    public final GuiNumberField apertureRadiusField =
+            new GuiNumberField().setValidateOnFocusChange(true).setSize(60, 20).setPrecision(4).setMinValue(0);
+    public final GuiNumberField fovField =
+            new GuiNumberField().setValidateOnFocusChange(true).setSize(60, 20).setPrecision(1).setMinValue(1).setMaxValue(179);
+
+    public GuiLensKeyframePanel() {
+        setLayout(new GridLayout().setCellsEqualSize(false).setColumns(2).setSpacingX(3).setSpacingY(5));
+        addElements(new GridLayout.Data(1, 0.5),
+                new GuiLabel().setI18nText("replaymod.gui.editkeyframe.focalDistance"),  focalDistanceField,
+                new GuiLabel().setI18nText("replaymod.gui.editkeyframe.apertureRadius"), apertureRadiusField,
+                new GuiLabel().setI18nText("replaymod.gui.editkeyframe.fov"), fovField);
+    }
+
+        public GuiLensKeyframePanel load(Keyframe keyframe) {
+        focalDistanceField.setValue(keyframe.getValue(LensProperties.FOCAL_DISTANCE)
+                .map(Triple::getLeft).orElse(LensProperties.DEFAULT_FOCAL_DISTANCE));
+        apertureRadiusField.setValue(keyframe.getValue(LensProperties.APERTURE_RADIUS)
+                .map(Triple::getLeft).orElse(LensProperties.DEFAULT_APERTURE_RADIUS));
+        fovField.setValue(keyframe.getValue(FovProperty.FOV)
+                .map(Triple::getLeft).orElse(FovProperty.DEFAULT_FOV));
+        return this;
+    }
+
+    public float getFocalDistance()  { return focalDistanceField.getFloat(); }
+    public float getApertureRadius() { return apertureRadiusField.getFloat(); }
+    public float getFov() { return fovField.getFloat(); }
+
+    @Override
+    protected GuiLensKeyframePanel getThis() { return this; }
+}

src/main/java/com/replaymod/simplepathing/preview/PathPreviewRenderer.java

@@ -7,6 +7,8 @@ import com.replaymod.core.versions.MCVer;
 import com.replaymod.pathing.properties.CameraProperties;
 import com.replaymod.pathing.properties.SpectatorProperty;
 import com.replaymod.pathing.properties.TimestampProperty;
+import com.replaymod.pathing.properties.LensProperties;
+import com.replaymod.pathing.properties.FovProperty;
 import com.replaymod.replay.ReplayHandler;
 import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
@@ -72,6 +74,8 @@ public class PathPreviewRenderer extends EventRegistrations {
     private static final int SLOW_PATH_COLOR = 0xffcccc;
     private static final int FAST_PATH_COLOR = 0x660000;
     private static final double FASTEST_PATH_SPEED = 0.01;
+    private static final float DOF_GIZMO_SCALE = 10f;
+    private static final float DOF_GIZMO_FAR_LEN = 64f;
 
     private final ReplayModSimplePathing mod;
     private final ReplayHandler replayHandler;
@@ -209,6 +213,9 @@ public class PathPreviewRenderer extends EventRegistrations {
             //#endif
 
             int time = guiPathing.timeline.getCursorPosition();
+            float focal = path.getValue(LensProperties.FOCAL_DISTANCE, time).map(Triple::getLeft).orElse(LensProperties.DEFAULT_FOCAL_DISTANCE);
+            float aperture = path.getValue(LensProperties.APERTURE_RADIUS, time).map(Triple::getLeft).orElse(LensProperties.DEFAULT_APERTURE_RADIUS);
+            float fov = path.getValue(FovProperty.FOV, time).map(Triple::getLeft).orElse(FovProperty.DEFAULT_FOV);
             Optional<Integer> entityId = path.getValue(SpectatorProperty.PROPERTY, time);
             if (entityId.isPresent()) {
                 // Spectating an entity
@@ -218,6 +225,7 @@ public class PathPreviewRenderer extends EventRegistrations {
                         Location loc = entityTracker.getEntityPositionAtTimestamp(entityId.get(), replayTime.get());
                         if (loc != null) {
                             drawCamera(viewPos, loc2Vec(loc), new Vector3f(loc.getYaw(), loc.getPitch(), 0f));
+                            drawFocusGizmo(viewPos, loc2Vec(loc), new Vector3f(loc.getYaw(), loc.getPitch(), 0f), focal, aperture, fov);
                         }
                     }
                 }
@@ -227,6 +235,7 @@ public class PathPreviewRenderer extends EventRegistrations {
                 Optional<Vector3f> cameraRot = path.getValue(CameraProperties.ROTATION, time).map(this::tripleF2Vec);
                 if (cameraPos.isPresent() && cameraRot.isPresent()) {
                     drawCamera(viewPos, cameraPos.get(), cameraRot.get());
+                    drawFocusGizmo(viewPos, cameraPos.get(), cameraRot.get(), focal, aperture, fov);
                 }
             }
         } finally {
@@ -526,6 +535,100 @@ public class PathPreviewRenderer extends EventRegistrations {
         popMatrix();
     }
 
+    private void drawFocusGizmo(Vector3f view, Vector3f pos, Vector3f rot, float focalDistance, float apertureRadius, float fov) {
+        float a = Math.max(0.15f, apertureRadius * DOF_GIZMO_SCALE);
+        int rayColor    = 0x66ccffaa; // RGBA: голубой (лучи апертуры)
+        int markerColor = 0xffaa00ff; // RGBA: оранжевый (маркер плоскости фокуса)
+        float mr = focalDistance * (float) Math.tan(Math.toRadians(fov) / 2.0); // радиус кольца-маркера
+        int markerSeg = 12;
+
+        pushMatrix();
+
+        Vector3f t = Vector3f.sub(pos, view, null);
+        GL11.glTranslatef(t.x, t.y, t.z);
+        GL11.glRotatef(-rot.x, 0, 1, 0); // Yaw
+        GL11.glRotatef(rot.y, 1, 0, 0);  // Pitch
+        GL11.glRotatef(rot.z, 0, 0, 1);  // Roll
+
+        //#if MC>=12105
+        //$$ VertexConsumerProvider.Immediate immediate = mc.getBufferBuilders().getEntityVertexConsumers();
+        //$$ immediate.draw();
+        //#if MC>=12111
+        //$$ VertexConsumer buffer = immediate.getBuffer(RenderLayers.LINES);
+        //#else
+        //$$ VertexConsumer buffer = immediate.getBuffer(RenderLayer.LINES);
+        //#endif
+        //#else
+        Tessellator tessellator = Tessellator.getInstance();
+        //#if MC>=12100
+        //$$ BufferBuilder buffer = tessellator.begin(net.minecraft.client.render.VertexFormat.DrawMode.LINES, VertexFormats.LINES);
+        //#else
+        BufferBuilder buffer = tessellator.getBuffer();
+        buffer.begin(GL11.GL_LINES, VertexFormats.POSITION_COLOR);
+        //#endif
+        //#endif
+
+        MatrixStack ms = new MatrixStack();
+        Vector3f apex = new Vector3f(0f, 0f, focalDistance); // точка схождения
+
+        for (Vector3f edge : new Vector3f[]{
+                new Vector3f( a, 0f, 0f), new Vector3f(-a, 0f, 0f),
+                new Vector3f(0f,  a, 0f), new Vector3f(0f, -a, 0f)}) {
+            Vector3f dir = Vector3f.sub(apex, edge, null); // apex - edge
+            dir.normalise();
+            dir.scale(DOF_GIZMO_FAR_LEN);
+            Vector3f far = Vector3f.add(apex, dir, null);
+            emitLine(ms, buffer, edge, far, rayColor, 2f);
+        }
+
+        // маркер фокальной плоскости: крестик
+        emitLine(ms, buffer, new Vector3f(-mr, 0f, focalDistance), new Vector3f(mr, 0f, focalDistance), markerColor, 2f);
+        emitLine(ms, buffer, new Vector3f(0f, -mr, focalDistance), new Vector3f(0f, mr, focalDistance), markerColor, 2f);
+        // маркер фокальной плоскости: кольцо
+        Vector3f prev = null;
+        for (int i = 0; i <= markerSeg; i++) {
+            double ang = 2 * Math.PI * i / markerSeg;
+            Vector3f p = new Vector3f((float) (mr * Math.cos(ang)), (float) (mr * Math.sin(ang)), focalDistance);
+            if (prev != null) emitLine(ms, buffer, prev, p, markerColor, 2f);
+            prev = p;
+        }
+
+        //#if MC>=12105
+        //$$ immediate.draw();
+        //#else
+        //#if MC>=12102
+        //$$ RenderSystem.setShader(ShaderProgramKeys.RENDERTYPE_LINES);
+        //#elseif MC>=11700
+        //$$ RenderSystem.applyModelViewMatrix();
+        //$$ RenderSystem.setShader(GameRenderer::getRenderTypeLinesShader);
+        //#else
+        GL11.glDisable(GL11.GL_TEXTURE_2D);
+        //#endif
+
+        //#if MC>=11700
+        //$$ RenderSystem.disableCull();
+        //#endif
+
+        //#if MC>=12100
+        //$$ try (var builtBuffer = buffer.end()) {
+        //$$     net.minecraft.client.render.BufferRenderer.drawWithGlobalProgram(builtBuffer);
+        //$$ }
+        //#else
+        tessellator.draw();
+        //#endif
+
+        //#if MC>=11700
+        //$$ RenderSystem.enableCull();
+        //#endif
+
+        //#if MC<11700
+        GL11.glEnable(GL11.GL_TEXTURE_2D);
+        //#endif
+        //#endif
+
+        popMatrix();
+    }
+
     //#if MC>=12105
     //$$ private void vertex(VertexConsumer buffer, float x, float y, float z, float u, float v, int alpha) {
     //#else

src/main/resources/mixins.render.replaymod.json

@@ -31,10 +31,12 @@
     "Mixin_SkipBlockOutlinesDuringRender",
     "Mixin_SkipHudDuringRender",
     "Mixin_StabilizeCamera",
+    "Mixin_RealLens_Camera",
     "Mixin_Stereoscopic_Camera",
     "Mixin_Stereoscopic_HandRenderPass",
     "Mixin_SuppressFramebufferResizeDuringRender",
     "Mixin_UseGuiFramebufferDuringGuiRendering",
+    "Mixin_DynamicFov",
     //#if MC>=11600
     "Mixin_AddIrisOdsShaderUniforms",
     "Mixin_LoadIrisOdsShaderPack",