From 7570bee178217b673e675b7a74097aba1b76c011 Mon Sep 17 00:00:00 2001
From: kiritow <1362050620@qq.com>
Date: Mon, 10 Apr 2017 19:52:40 +0800
Subject: [PATCH] Add Surface::savePNG, powered by IMG_SavePNG.

---
 MiniEngine.cpp | 5 +++++
 MiniEngine.h   | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/MiniEngine.cpp b/MiniEngine.cpp
index 783067f..a9b235a 100644
--- a/MiniEngine.cpp
+++ b/MiniEngine.cpp
@@ -150,6 +150,11 @@ namespace MiniEngine
         op.reset(SDL_RWFromMem(mem,size),[](SDL_RWops* p){SDL_RWclose(p);});
     }
 
+    int Surface::savePNG(const std::string& filename)
+    {
+        return IMG_SavePNG(surf.get(),filename.c_str());
+    }
+
 	Texture::Texture()
 	{
         updateInfo();
diff --git a/MiniEngine.h b/MiniEngine.h
index 6cb3d2e..96db246 100644
--- a/MiniEngine.h
+++ b/MiniEngine.h
@@ -85,7 +85,6 @@ namespace MiniEngine
         std::shared_ptr<SDL_RWops> op;
 	};
 
-
 	enum class BlendMode
 	{
 		None = SDL_BLENDMODE_NONE,
@@ -98,6 +97,7 @@ namespace MiniEngine
 	{
 	public:
 		~Surface() = default;
+        int savePNG(const std::string& filename);
 	protected:
 		Surface() = default;
 	private: