From 46085084763d5d85c259e5deb67c9e8ab818e595 Mon Sep 17 00:00:00 2001
From: kiritow <1362050620@qq.com>
Date: Wed, 7 Jun 2017 19:52:37 +0800
Subject: [PATCH] class Renderer supports getting rendering target now.

---
 MiniEngine.cpp | 14 ++++++++++++++
 MiniEngine.h   |  5 ++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/MiniEngine.cpp b/MiniEngine.cpp
index 5fb648f..d3d4263 100644
--- a/MiniEngine.cpp
+++ b/MiniEngine.cpp
@@ -779,6 +779,13 @@ namespace MiniEngine
         updateInfo();
     }
 
+    //private
+    void Texture::_set_no_delete(SDL_Texture* p)
+    {
+        _text.reset(p,[](SDL_Texture*){});
+        updateInfo();
+    }
+
     //private
     void Texture::_clear()
     {
@@ -940,6 +947,13 @@ namespace MiniEngine
 		return SDL_SetRenderTarget(_get(), nullptr);
 	}
 
+	Texture Renderer::getTarget()
+	{
+        Texture t;
+        t._set_no_delete(SDL_GetRenderTarget(_get()));
+        return t;
+	}
+
 	int Renderer::fillRect(const Rect& rect)
 	{
 		auto inr = rect.toSDLRect();
diff --git a/MiniEngine.h b/MiniEngine.h
index 62c0cfb..a0c50e1 100644
--- a/MiniEngine.h
+++ b/MiniEngine.h
@@ -15,7 +15,7 @@ namespace MiniEngine
 	public:
 		int x, y, w, h;
 		Rect(int X, int Y, int W, int H);
-		Rect(const SDL_Rect&);
+		explicit Rect(const SDL_Rect&);
 		Rect();
 		SDL_Rect toSDLRect() const;
 		bool isEmpty();
@@ -199,6 +199,8 @@ namespace MiniEngine
 	private:
 		std::shared_ptr<SDL_Texture> _text;
 		void _set(SDL_Texture*);
+		/// Just used for "SDL_GetRenderTarget"
+		void _set_no_delete(SDL_Texture*);
 		void _clear();
 		SDL_Texture* _get() const;
 		Rect rect;
@@ -220,6 +222,7 @@ namespace MiniEngine
 
 		int setTarget(Texture& t);
 		int setTarget();
+		Texture getTarget();
 
 		int fillRect(const Rect& rect);
 		int drawRect(const Rect& rect);