From dafcf9bfeff0866f78a395b4262260bbfecfca8e Mon Sep 17 00:00:00 2001
From: ChestnutYueyue <952134128@qq.com>
Date: Mon, 16 Mar 2026 22:22:43 +0800
Subject: [PATCH] =?UTF-8?q?refactor(=E7=A4=BA=E4=BE=8B):=20=E5=B0=86?=
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简化图像显示示例的纹理加载机制，移除对事件系统的依赖。
改为在每帧更新时检查纹理是否已加载，避免在渲染事件中设置纹理，
使代码更直观并减少不必要的监听器管理。
---
 examples/image_display_demo/main.cpp | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/examples/image_display_demo/main.cpp b/examples/image_display_demo/main.cpp
index 2081a3f..bb2e2d6 100644
--- a/examples/image_display_demo/main.cpp
+++ b/examples/image_display_demo/main.cpp
@@ -1,5 +1,4 @@
 #include <cstdio>
-#include <event/events.h>
 #include <extra2d.h>
 #include <renderer/rhi_module.h>
 
@@ -11,16 +10,18 @@ public:
     Scene::onEnter();
     createCamera();
     createImageSprite();
-    onRenderBeginListener_.bind([this]() { trySetupTexture(); });
   }
 
-  void onExit() override {
-    onRenderBeginListener_.reset();
-    Scene::onExit();
+  void update(float dt) override {
+    Scene::update(dt);
+    trySetupTexture();
   }
 
 private:
   void trySetupTexture() {
+    if (textureLoaded_) {
+      return;
+    }
     auto *rhiModule = RHIModule::get();
     if (!rhiModule || !rhiModule->getDevice()) {
       return;
@@ -32,7 +33,7 @@ private:
     auto texture = assets->load<Texture>("assets/test.png");
     if (texture.isValid()) {
       spriteRenderer_->setTexture(texture);
-      onRenderBeginListener_.reset();
+      textureLoaded_ = true;
     }
   }
   void createCamera() {
@@ -56,7 +57,7 @@ private:
     addChild(spriteNode);
   }
   Ptr<SpriteRenderer> spriteRenderer_;
-  events::OnRenderBegin::Listener onRenderBeginListener_;
+  bool textureLoaded_ = false;
 };
 
 int main(int argc, char **argv) {