SDLPP: Don't save textures before render

Since textures should only be manipulated in the main thread (as well
as rendering), let programmers deal with ensuring the texture is
available during rendercopy

sdlpp/sdlpp_renderobject.cpp

@@ -119,7 +119,4 @@ void RenderObject::copyTo( std::shared_ptr< RenderObject > other ) {
     }
     other->colidedWith.clear();
 }
-void RenderObject::saveCurTexture() {
-    cur_texture = texture;
-}
 } // namespace SDLPP

sdlpp/sdlpp_renderobject.hpp

@@ -16,6 +16,7 @@ class SDLPPSCOPE RenderObject {
 public:
     RenderObject( const std::shared_ptr< Renderer > &r ) : renderer( r ) {}
     virtual ~RenderObject() {}
+    // TODO maybe do basic render() that all descandants can inherit?
     virtual void render() = 0;
     virtual int leftmost() = 0;
     virtual int topmost() = 0;
@@ -78,7 +79,6 @@ public:
     bool isStatic();
     void setStatic( bool stat = true );
     std::shared_ptr< Renderer > getRenderer() const;
-    void saveCurTexture();
 
 protected:
     virtual void copyTo( std::shared_ptr< RenderObject > other );

sdlpp/sdlpp_scene.cpp

@@ -120,10 +120,8 @@ void Scene::renderScene( bool clear_renderer ) {
     if ( background && background->getTexturePtr() )
         SDL_RenderCopy( renderer->getRendererPtr(), background->getTexturePtr(),
                         NULL, NULL );
-    for ( const auto &x : render_objects ) {
+    for ( const auto &x : render_objects )
-        x->saveCurTexture();
         x->render();
-    }
 }
 void Scene::presentScene() {
     SDL_RenderPresent( renderer->getRendererPtr() );