free opengl resources

app/src/main/java/chess/view/DDDrender/shader/ShaderProgram.java

@@ -1,5 +1,7 @@
 package chess.view.DDDrender.shader;
 
+import java.io.Closeable;
+import java.io.IOException;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
 
@@ -9,7 +11,7 @@ import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.GL30;
 import org.lwjgl.system.MemoryStack;
 
-public abstract class ShaderProgram {
+public abstract class ShaderProgram implements Closeable {
 	private int programId;
 	private int vertexShaderId;
 	private int fragmentShaderId;
@@ -91,4 +93,11 @@ public abstract class ShaderProgram {
 			GL30.glUniformMatrix4fv(location, false, buffer);
 		}
 	}
+
+	@Override
+	public void close() throws IOException {
+		GL30.glDeleteShader(vertexShaderId);
+		GL30.glDeleteShader(fragmentShaderId);
+		GL30.glDeleteProgram(programId);
+	}
 }