free frame buffer

app/src/main/java/chess/view/DDDrender/Renderer.java

@@ -72,5 +72,6 @@ public class Renderer implements Closeable {
 	public void close() throws IOException {
 		this.boardShader.close();
 		this.pieceShader.close();
+		this.frameBuffer.close();
 	}
 }

app/src/main/java/chess/view/DDDrender/opengl/FrameBuffer.java

@@ -11,9 +11,12 @@ import static org.lwjgl.opengl.GL11.glClear;
 import static org.lwjgl.opengl.GL11.glTexImage2D;
 import static org.lwjgl.opengl.GL11.glViewport;
 
+import java.io.Closeable;
+import java.io.IOException;
+
 import org.lwjgl.opengl.GL30;
 
-public class FrameBuffer {
+public class FrameBuffer implements Closeable {
 
 	private int fbo;
 	private int renderTexture;
@@ -103,4 +106,11 @@ public class FrameBuffer {
 		return renderTexture;
 	}
 
+	@Override
+	public void close() throws IOException {
+		GL30.glDeleteFramebuffers(this.fbo);
+		GL30.glDeleteRenderbuffers(this.depthBuffer);
+		GL30.glDeleteTextures(this.renderTexture);
+	}
+
 }