resize viewport

src/Main.cpp

@@ -199,6 +199,10 @@ int main() {
 		glClear(GL_COLOR_BUFFER_BIT);
 		glClearColor(0, 0, 0, 1);
 
+		int width, height;
+		glfwGetWindowSize(window, &width, &height);
+		glViewport(0, 0, width, height);
+
 		// float positions[3 * PARTICLE_COUNT];
 		// glGetBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, sizeof(float) * 3 * PARTICLE_COUNT, positions);