Can now use ImGui-SFML without sf::RenderTarget

Author: eliasdaler

imgui-SFML.cpp

@@ -193,6 +193,10 @@ void Init(sf::RenderWindow& window, bool loadDefaultFont) {
 }
 
 void Init(sf::Window& window, sf::RenderTarget& target, bool loadDefaultFont) {
+    Init(window, static_cast<sf::Vector2f>(target.getSize()), loadDefaultFont);
+}
+
+void Init(sf::Window& window, const sf::Vector2f& displaySize, bool loadDefaultFont) {
 #if __cplusplus < 201103L  // runtime assert when using earlier than C++11 as no
                            // static_assert support
     assert(
@@ -245,7 +249,7 @@ void Init(sf::Window& window, sf::RenderTarget& target, bool loadDefaultFont) {
     initDefaultJoystickMapping();
 
     // init rendering
-    io.DisplaySize = static_cast<sf::Vector2f>(target.getSize());
+    io.DisplaySize = displaySize;
 
     // clipboard
     io.SetClipboardTextFn = setClipboardText;
@@ -456,6 +460,11 @@ void Render(sf::RenderTarget& target) {
     RenderDrawLists(ImGui::GetDrawData());
 }
 
+void Render() {
+    ImGui::Render();
+    RenderDrawLists(ImGui::GetDrawData());
+}
+
 void Shutdown() {
     ImGui::GetIO().Fonts->TexID = (ImTextureID)NULL;
 

imgui-SFML.h

@@ -25,6 +25,7 @@ namespace ImGui
     {
         IMGUI_SFML_API void Init(sf::RenderWindow& window, bool loadDefaultFont = true);
         IMGUI_SFML_API void Init(sf::Window& window, sf::RenderTarget& target, bool loadDefaultFont = true);
+        IMGUI_SFML_API void Init(sf::Window& window, const sf::Vector2f& displaySize, bool loadDefaultFont = true);
 
         IMGUI_SFML_API void ProcessEvent(const sf::Event& event);
 
@@ -33,6 +34,7 @@ namespace ImGui
         IMGUI_SFML_API void Update(const sf::Vector2i& mousePos, const sf::Vector2f& displaySize, sf::Time dt);
 
         IMGUI_SFML_API void Render(sf::RenderTarget& target);
+        IMGUI_SFML_API void Render();
 
         IMGUI_SFML_API void Shutdown();