diff --git a/samples/api/texture_loading/texture_loading.cpp b/samples/api/texture_loading/texture_loading.cpp
index f521bfa..19cac48 100644
--- a/samples/api/texture_loading/texture_loading.cpp
+++ b/samples/api/texture_loading/texture_loading.cpp
@@ -573,7 +573,7 @@ void TextureLoading::build_command_buffers()
 
 		//vkCmdDrawIndexed(draw_cmd_buffers[i], index_count, 1, 0, 0, 0);
 
-		//draw_point_cloud(draw_cmd_buffers[i]);
+		draw_point_cloud(draw_cmd_buffers[i]);
 		draw_point_cloud_line(draw_cmd_buffers[i]);
 
 		//draw_ui(draw_cmd_buffers[i]);
@@ -1495,7 +1495,7 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	
 	prepared = true;
 
-	update_uniform_buffers_point(50, -0.5, -0.5, 0, 1, 1, 1, 0, 0, 0, 0, 0, -1);
+	update_uniform_buffers_point(47, -0.5, -0.51, 0, 1, 1, 1, 0, 0, 0, 0, 0, -1);
 	//start();
 	return true;
 }
@@ -1619,7 +1619,7 @@ void TextureLoading::createTexture(VkDevice device, VkPhysicalDevice physicalDev
 	VkImageCreateInfo imageInfo = {};
 	imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
 	imageInfo.imageType = VK_IMAGE_TYPE_2D;
-	imageInfo.format = VK_FORMAT_R8G8B8A8_SRGB; //VK_FORMAT_R8G8B8A8_UNORM;
+	imageInfo.format = VK_FORMAT_R8G8B8A8_UNORM;// VK_FORMAT_R8G8B8A8_SRGB; //VK_FORMAT_R8G8B8A8_UNORM;
 	imageInfo.extent.width = width;
 	imageInfo.extent.height = height;
 	imageInfo.extent.depth = 1;
@@ -1656,7 +1656,7 @@ void TextureLoading::createTexture(VkDevice device, VkPhysicalDevice physicalDev
 	viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
 	viewInfo.image = texture.image;
 	viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-	viewInfo.format = VK_FORMAT_R8G8B8A8_SRGB; // VK_FORMAT_R8G8B8A8_UNORM;
+	viewInfo.format = VK_FORMAT_R8G8B8A8_UNORM;// VK_FORMAT_R8G8B8A8_SRGB; // VK_FORMAT_R8G8B8A8_UNORM;
 	viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
 	viewInfo.subresourceRange.baseMipLevel = 0;
 	viewInfo.subresourceRange.levelCount = 1;
@@ -2007,7 +2007,35 @@ void TextureLoading::demo1(float* pos)
 	{
 		add_point(pos, points, pointIndex[i]);
 	}
-	update_point_vertex_buffer_line(points, point_index, 0.9f, 0.9f, 0.9f);
+	std::vector<LineVertex> vertices;
+	update_point_vertex_buffer_line(points, point_index, 0.9f, 0.9f, 0.9f, vertices);
+
+	point_index = 0;
+	add_point(pos, points, 9);
+	add_point(pos, points, 168);
+	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);
+
+	point_index = 0;
+	add_point(pos, points, 9);
+	add_point(pos, points, 104);
+	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);
+
+	point_index = 0;
+	add_point(pos, points, 9);
+	add_point(pos, points, 108);
+	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);
+
+	point_index = 0;
+	add_point(pos, points, 9);
+	add_point(pos, points, 337);
+	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);
+
+	point_index = 0;
+	add_point(pos, points, 9);
+	add_point(pos, points, 333);
+	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);
+
+	update_point_vertex_buffer_line_save(vertices);
 }
 
 void update_face_round_line_point(float* pos)
@@ -2048,11 +2076,13 @@ void update_face_round_line_point(float* pos)
 	TextureLoading* self = TextureLoading::Get();
 	if (self != nullptr)
 	{
-		self->update_point_vertex_buffer_line(points, point_index, 0.9f, 0.9f, 0.9f);
+		std::vector<LineVertex> vertices;
+		self->update_point_vertex_buffer_line(points, point_index, 0.9f, 0.9f, 0.9f, vertices);
+		self->update_point_vertex_buffer_line_save(vertices);
 	}
 }
 
-void TextureLoading::update_point_vertex_buffer_line(float* pos, int count, float r, float g, float b)
+void TextureLoading::update_point_vertex_buffer_line(float* pos, int count, float r, float g, float b, std::vector<LineVertex>& vertices)
 {
 	std::lock_guard<std::mutex> lock(mtx_point_line);
 	if (count <= 0) {
@@ -2063,8 +2093,6 @@ void TextureLoading::update_point_vertex_buffer_line(float* pos, int count, floa
 
 	glm::vec3 color = { r,g,b };
 
-	// 1. 准备顶点数据
-	std::vector<LineVertex> vertices;
 
 	for (int i = 0; i < count - 1; ++i) 
 	{
@@ -2089,6 +2117,11 @@ void TextureLoading::update_point_vertex_buffer_line(float* pos, int count, floa
 			});
 	}
 
+	
+}
+
+void TextureLoading::update_point_vertex_buffer_line_save(std::vector<LineVertex>& vertices)
+{
 	point_count_line = vertices.size();
 
 	// 2. 更新或创建顶点缓冲区
diff --git a/samples/api/texture_loading/texture_loading.h b/samples/api/texture_loading/texture_loading.h
index bf930b7..8f5bf5b 100644
--- a/samples/api/texture_loading/texture_loading.h
+++ b/samples/api/texture_loading/texture_loading.h
@@ -199,7 +199,8 @@ public:
 public:
 
 	void update_point_vertex_buffer(float* pos, int pointCount);
-	void update_point_vertex_buffer_line(float* pos, int pointCount_line, float r, float g, float b);
+	void update_point_vertex_buffer_line(float* pos, int pointCount_line, float r, float g, float b, std::vector<LineVertex>& vertices);
+	void update_point_vertex_buffer_line_save(std::vector<LineVertex>& vertices);
 private:
 	std::thread workerThread;
 	bool running = false;