diff --git a/SDLWrapper/Renderer.cpp b/SDLWrapper/Renderer.cpp
index 89a25d7..85322ff 100644
--- a/SDLWrapper/Renderer.cpp
+++ b/SDLWrapper/Renderer.cpp
@@ -20,6 +20,40 @@ SDL_Renderer* Renderer::_get() const
     return _rnd.get();
 }
 
+// private
+int Renderer::_createRenderer_Real(Window& wnd,Uint32 flags)
+{
+    SDL_Renderer* pSDLRnd=SDL_CreateRenderer(wnd._get(), -1, flags);
+    if(pSDLRnd!=nullptr)
+    {
+        _set(pSDLRnd);
+        return 0;
+    }
+    else
+    {
+        return -1;
+    }
+}
+
+// private
+Uint32 Renderer::_rendertype_caster(RendererType Type)
+{
+    switch(Type)
+    {
+    case RendererType::Accelerated:
+        return SDL_RENDERER_ACCELERATED;
+    case RendererType::PresentSync:
+        return SDL_RENDERER_PRESENTVSYNC;
+    case RendererType::Software:
+        return SDL_RENDERER_SOFTWARE;
+    case RendererType::TargetTexture:
+        return SDL_RENDERER_TARGETTEXTURE;
+    }
+
+    /// If an error occurs, return 0 by default.
+    return 0;
+}
+
 Renderer::Renderer(Window& wnd,std::initializer_list<RendererType> RendererFlags) throw (ErrorViewer)
 {
     if(createRenderer(wnd,RendererFlags)!=0)
@@ -28,6 +62,14 @@ Renderer::Renderer(Window& wnd,std::initializer_list<RendererType> RendererFlags
     }
 }
 
+Renderer::Renderer(Surface& surf) throw (ErrorViewer)
+{
+    if(createSoftRenderer(surf)!=0)
+    {
+        throw ErrorViewer();
+    }
+}
+
 int Renderer::createRenderer(Window& wnd,std::initializer_list<RendererType> RendererFlags)
 {
     Uint32 flag = 0;
@@ -38,6 +80,20 @@ int Renderer::createRenderer(Window& wnd,std::initializer_list<RendererType> Ren
     return _createRenderer_Real(wnd,flag);
 }
 
+int Renderer::createSoftRenderer(Surface& surf)
+{
+    SDL_Renderer* pRnd=SDL_CreateSoftwareRenderer(surf._get());
+    if(pRnd!=nullptr)
+    {
+        _set(pRnd);
+        return 0;
+    }
+    else
+    {
+        return -1;
+    }
+}
+
 int Renderer::setColor(const RGBA& pack)
 {
     return SDL_SetRenderDrawColor(_get(), pack.r, pack.g, pack.b, pack.a);
@@ -456,38 +512,4 @@ int Renderer::GetDriversNum()
     return SDL_GetNumRenderDrivers();
 }
 
-// private
-Uint32 Renderer::_rendertype_caster(RendererType Type)
-{
-    switch(Type)
-    {
-    case RendererType::Accelerated:
-        return SDL_RENDERER_ACCELERATED;
-    case RendererType::PresentSync:
-        return SDL_RENDERER_PRESENTVSYNC;
-    case RendererType::Software:
-        return SDL_RENDERER_SOFTWARE;
-    case RendererType::TargetTexture:
-        return SDL_RENDERER_TARGETTEXTURE;
-    }
-
-    /// If an error occurs, return 0 by default.
-    return 0;
-}
-
-// private
-int Renderer::_createRenderer_Real(Window& wnd,Uint32 flags)
-{
-    SDL_Renderer* pSDLRnd=SDL_CreateRenderer(wnd._get(), -1, flags);
-    if(pSDLRnd!=nullptr)
-    {
-        _set(pSDLRnd);
-        return 0;
-    }
-    else
-    {
-        return -1;
-    }
-}
-
 #include "end_code.h"
diff --git a/SDLWrapper/Renderer.h b/SDLWrapper/Renderer.h
index 6faa64e..b26084b 100644
--- a/SDLWrapper/Renderer.h
+++ b/SDLWrapper/Renderer.h
@@ -11,7 +11,10 @@ class Renderer
 {
 public:
     Renderer() = default;
+    /// Create a Renderer associated with Window
     Renderer(Window& wnd,std::initializer_list<RendererType> RendererFlags = { RendererType::Accelerated,RendererType::TargetTexture }) throw (ErrorViewer);
+    /// Create a software Renderer
+    Renderer(Surface& surf) throw (ErrorViewer);
     ~Renderer() = default;
 
     /// If Renderer is current not ready, setRenderer will create Renderer.
@@ -31,6 +34,8 @@ public:
 
     int createRenderer(Window& wnd,std::initializer_list<RendererType>);
 
+    int createSoftRenderer(Surface& surf);
+
     int setColor(const RGBA& pack);
     RGBA getColor() const;
     int setBlendMode(BlendMode mode);