diff --git a/samples/api/texture_loading/texture_loading.cpp b/samples/api/texture_loading/texture_loading.cpp
index f23787b..fab1ee0 100644
--- a/samples/api/texture_loading/texture_loading.cpp
+++ b/samples/api/texture_loading/texture_loading.cpp
@@ -175,10 +175,10 @@ std::vector<uint8_t> generateSimpleTestImage(int width, int height, int cell_wid
 				const uint8_t* color = cellColors[gridY][gridX].data();
 				int index = (y * width + x) * 4;
 
-				imageData[index] = color[0]/10;
-				imageData[index + 1] = color[1]/10;
-				imageData[index + 2] = color[2]/10;
-				imageData[index + 3] = color[3]/10;
+				imageData[index] = color[0]/5;
+				imageData[index + 1] = color[1]/3;
+				imageData[index + 2] = color[2]/3;
+				imageData[index + 3] = color[3]/3;
 			}
 		}
 	}
@@ -1378,20 +1378,18 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	size_t dataSize = testImage.size();
 	processWithVulkan(testImage.data(), width, height, rowStride, dataSize, texture_point);
 
-	//width = 256;
-	//height = 256;
-	//rowStride = width * 4;
-	//auto arrowImage = generateSimpleTestImage(width, height, 80);
-	//dataSize = arrowImage.size();
-	//processWithVulkan(arrowImage.data(), width, height, rowStride, dataSize, texture_point);
+	width = 640;
+	height = 480;
+	rowStride = width * 4;
+	auto arrowImage = generateSimpleTestImage(width, height, 80);
+	dataSize = arrowImage.size();
+	processWithVulkan(arrowImage.data(), width, height, rowStride, dataSize, cam_text);
 
-	const char* filename = "face.png";
-	std::vector<unsigned char> image; // 存储RGB数据
-	unsigned w, h;
-
-	// 解码PNG文件
-	unsigned error = lodepng::decode(image, w, h, filename, LCT_RGBA, 8);
-	processWithVulkan(image.data(), w, h, w*4, image.size(), cam_text);
+	//const char* filename = "face.png";
+	//std::vector<unsigned char> image; 
+	//unsigned w, h;
+	//unsigned error = lodepng::decode(image, w, h, filename, LCT_RGBA, 8);
+	//processWithVulkan(image.data(), w, h, w*4, image.size(), cam_text);
 
 	width = 256;
 	height = 256;
@@ -1442,8 +1440,8 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	{
 		nlohmann::json p = rawPoint[i];
 		int index = p["id"];
-		pos[pos_id++] = p["x"]/480;
-		pos[pos_id++] = p["y"] / 480;
+		pos[pos_id++] = p["x"]/480.f;
+		pos[pos_id++] = p["y"] / 480.f;
 		pos[pos_id++] = p["z"];
 	}
 	update_point_vertex_buffer(pos, rawPoint.size());