diff --git a/samples/api/texture_loading/texture_loading.cpp b/samples/api/texture_loading/texture_loading.cpp
index 19cac48..070a855 100644
--- a/samples/api/texture_loading/texture_loading.cpp
+++ b/samples/api/texture_loading/texture_loading.cpp
@@ -592,6 +592,7 @@ void TextureLoading::draw()
 	std::unique_lock<std::mutex> lock_mvp(mtx_mvp);
 	ApiVulkanSample::prepare_frame();
 
+
 	// --- 新增：在命令缓冲区中绘制点云 ---
 	// 在 build_command_buffers 中已经构建了命令缓冲区，但点数据是动态的。
 	// 因此，我们在这里重新记录命令缓冲区。
@@ -869,16 +870,16 @@ void TextureLoading::setup_descriptor_set_layout_point_line()
 		// Binding 0 : Vertex shader uniform buffer
 		vkb::initializers::descriptor_set_layout_binding(
 			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
-			VK_SHADER_STAGE_VERTEX_BIT,
+			VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
 			0),
 
-			// Binding 0 : Vertex shader uniform buffer
+			// Binding 1 : Vertex shader uniform buffer
 		vkb::initializers::descriptor_set_layout_binding(
 			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
 			VK_SHADER_STAGE_FRAGMENT_BIT,
 			1),
 
-		// Binding 1 : Fragment shader image sampler
+		// Binding 2 : Fragment shader image sampler
 		vkb::initializers::descriptor_set_layout_binding(
 			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
 			VK_SHADER_STAGE_FRAGMENT_BIT,
@@ -994,6 +995,11 @@ void TextureLoading::prepare_uniform_buffers_DashParameters()
 
 void TextureLoading::update_uniform_buffers_DashParameters(float dashSize, float gapSize, float dashOffset, float uAASize, int useWorldSpace)
 {
+	if (!prepared)
+	{
+		return;
+	}
+	std::unique_lock<std::mutex> lock(mtx_mvp);
 	_DashParameters.dashSize = dashSize;
 	_DashParameters.gapSize = gapSize;
 	_DashParameters.dashOffset = dashOffset;
@@ -1019,7 +1025,6 @@ void TextureLoading::update_uniform_buffers_point(float fov, float x, float y, f
 	{
 		return;
 	}
-
 	std::unique_lock<std::mutex> lock(mtx_mvp);
 	ubo_vs_point.projection = glm::perspective(glm::radians(fov), static_cast<float>(width) / static_cast<float>(height), 0.001f, 256.0f);
 
@@ -1472,8 +1477,6 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	
 
 
-	//update_point_vertex_buffer(testPoint, sizeof(testPoint) / (3 * 4));
-	//update_point_vertex_buffer_line(testPoint_line, sizeof(testPoint_line) / (3 * 4), 1, 0, 0);
 #ifdef _WIN32
 	std::ifstream file("face.json");
 	std::string content((std::istreambuf_iterator<char>(file)),std::istreambuf_iterator<char>());
@@ -1573,7 +1576,7 @@ void TextureLoadProcessWithVulkan(uint8_t* data, int width, int height, int rowS
 	TextureLoading::Get()->processWithVulkan(data, width, height, rowStride, dataSize, cam_tex);
 }
 
-void update_face_round_line_point(float* pos);
+
 void ReceiveFacePoint(float* pos, int pointCount, int width, int height)
 {
 	//for (int i = 0; i < pointCount; i++) {
@@ -1584,8 +1587,7 @@ void ReceiveFacePoint(float* pos, int pointCount, int width, int height)
     TextureLoading* self = TextureLoading::Get();
     if(self != nullptr)
     {
-        //TextureLoading::Get()->update_point_vertex_buffer(pos, pointCount);
-        //update_face_round_line_point(pos);
+        TextureLoading::Get()->update_point_vertex_buffer(pos, pointCount);
 		self->demo1(pos);
     }
 
@@ -2038,49 +2040,6 @@ void TextureLoading::demo1(float* pos)
 	update_point_vertex_buffer_line_save(vertices);
 }
 
-void update_face_round_line_point(float* pos)
-{
-	point_index = 0;
-	float points[100 * 3];
-	add_point(pos, points, 152);
-	add_point(pos, points, 176);
-	add_point(pos, points, 150);
-	add_point(pos, points, 172);
-	add_point(pos, points, 58);
-	add_point(pos, points, 132);
-	add_point(pos, points, 234);
-	add_point(pos, points, 162);
-	add_point(pos, points, 21);
-	add_point(pos, points, 54);
-	add_point(pos, points, 103);
-	add_point(pos, points, 67);
-	add_point(pos, points, 109);
-	add_point(pos, points, 338);
-	add_point(pos, points, 297);
-	add_point(pos, points, 332);
-	add_point(pos, points, 284);
-	add_point(pos, points, 251);
-	add_point(pos, points, 389);
-	add_point(pos, points, 454);
-	add_point(pos, points, 323);
-	add_point(pos, points, 361);
-	add_point(pos, points, 435);
-	add_point(pos, points, 288);
-	add_point(pos, points, 397);
-	add_point(pos, points, 365);
-	add_point(pos, points, 379);
-	add_point(pos, points, 378);
-	add_point(pos, points, 400);
-	add_point(pos, points, 377);
-	add_point(pos, points, 152);
-	TextureLoading* self = TextureLoading::Get();
-	if (self != nullptr)
-	{
-		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, std::vector<LineVertex>& vertices)
 {