diff --git a/mandel.png b/mandel.png
new file mode 100644
index 0000000..96c0df5
Binary files /dev/null and b/mandel.png differ
diff --git a/rainbow.png b/rainbow.png
new file mode 100644
index 0000000..3ecd86b
Binary files /dev/null and b/rainbow.png differ
diff --git a/stbiw/CMakeLists.txt b/stbiw/CMakeLists.txt
index b56b853..538ba74 100644
--- a/stbiw/CMakeLists.txt
+++ b/stbiw/CMakeLists.txt
@@ -1 +1,3 @@
-message(FATAL_ERROR "请修改 stbiw/CMakeLists.txt！要求生成一个名为 stbiw 的库")
+# message(FATAL_ERROR "请修改 stbiw/CMakeLists.txt！要求生成一个名为 stbiw 的库")
+add_library(stbiw STATIC stb_image_write.cpp)
+target_include_directories(stbiw PUBLIC .)
\ No newline at end of file
diff --git a/stbiw/stb_image_write.cpp b/stbiw/stb_image_write.cpp
new file mode 100644
index 0000000..b9adc91
--- /dev/null
+++ b/stbiw/stb_image_write.cpp
@@ -0,0 +1,3 @@
+#pragma once
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
\ No newline at end of file