diff --git a/example/Vulkan/texture_rect.cpp b/example/Vulkan/texture_rect.cpp
index 413cc521..a1c1573b 100644
--- a/example/Vulkan/texture_rect.cpp
+++ b/example/Vulkan/texture_rect.cpp
@@ -1,5 +1,5 @@
-// 1.indices_rect
-// ¸ÃʾÀýÊÇ0.triangleµÄ½ø»¯£¬ÑÝʾʹÓÃË÷ÒýÊý¾Ý»­Ò»¸ö¾ØÐÎ
+// 2.texture_rect
+// 该示例是1.indices_rect的进化，演示在矩形上贴上贴图
 
 #include"VulkanAppFramework.h"
 #include<hgl/graph/vulkan/VKTexture.h>
@@ -13,8 +13,8 @@ VK_NAMESPACE_BEGIN
 Texture2D *LoadTGATexture(const OSString &filename,Device *device);
 VK_NAMESPACE_END
 
-constexpr uint32_t SCREEN_WIDTH=128;
-constexpr uint32_t SCREEN_HEIGHT=128;
+constexpr uint32_t SCREEN_WIDTH=256;
+constexpr uint32_t SCREEN_HEIGHT=256;
 
 struct WorldConfig
 {