test worked

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;
+    }
+}