From 2397dec7b2e3b8ac2a86edb2c99eaf2a8b92cac9 Mon Sep 17 00:00:00 2001
From: awesome <3109372170@qq.com>
Date: Mon, 12 May 2025 11:11:26 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E9=87=8D=E5=BD=B1=EF=BC=8C?=
 =?UTF-8?q?=E6=AF=8F=E6=AC=A1paintGL=E7=9A=84=E5=90=8C=E6=97=B6glClear?=
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---
 05_opengl_triangle/openglwidget.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/05_opengl_triangle/openglwidget.cpp b/05_opengl_triangle/openglwidget.cpp
index 747a8fc..d3f510b 100644
--- a/05_opengl_triangle/openglwidget.cpp
+++ b/05_opengl_triangle/openglwidget.cpp
@@ -11,6 +11,7 @@ void OpenGLWidget::initializeGL()
     initializeOpenGLFunctions();
 
     glEnable(GL_DEPTH_TEST);
+    glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // 设置背景颜色
 
     vao.create();
     vbo.create();
@@ -34,6 +35,7 @@ void OpenGLWidget::resizeGL(int w, int h)
 
 void OpenGLWidget::paintGL()
 {
+    glClear(GL_COLOR_BUFFER_BIT); // 每帧都清空屏幕
     qDebug() << "paintGL";
     vao.bind();