From 26b5a524e4ffe4e8937cbe6d36cd43c2c74fb51e Mon Sep 17 00:00:00 2001
From: Ingo Ruhnke <grumbel@gmail.com>
Date: Wed, 30 Jul 2014 20:20:51 +0200
Subject: [PATCH] Implemented set_gamma()

---
 src/scripting/functions.cpp    | 8 ++++----
 src/video/gl/gl_renderer.cpp   | 8 ++++++++
 src/video/gl/gl_renderer.hpp   | 1 +
 src/video/renderer.hpp         | 1 +
 src/video/sdl/sdl_renderer.cpp | 8 ++++++++
 src/video/sdl/sdl_renderer.hpp | 1 +
 6 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/scripting/functions.cpp b/src/scripting/functions.cpp
index e82191b7a..ba0fc3fb5 100644
--- a/src/scripting/functions.cpp
+++ b/src/scripting/functions.cpp
@@ -32,6 +32,7 @@
 #include "supertux/tile.hpp"
 #include "supertux/world.hpp"
 #include "util/gettext.hpp"
+#include "video/renderer.hpp"
 #include "worldmap/tux.hpp"
 
 #include "scripting/squirrel_util.hpp"
@@ -271,10 +272,9 @@ void camera()
   log_info << "Camera is at " << Sector::current()->camera->get_translation().x << "," << Sector::current()->camera->get_translation().y << std::endl;
 }
 
-void set_gamma(float /*gamma*/) {
-#ifdef OLD_SDL1
-  SDL_SetWindowGammaRamp(screen,gamma, gamma, gamma);
-#endif
+void set_gamma(float gamma)
+{
+  Renderer::instance()->set_gamma(gamma);
 }
 
 void quit()
diff --git a/src/video/gl/gl_renderer.cpp b/src/video/gl/gl_renderer.cpp
index 991e3aa21..ba3a60165 100644
--- a/src/video/gl/gl_renderer.cpp
+++ b/src/video/gl/gl_renderer.cpp
@@ -640,4 +640,12 @@ GLRenderer::apply_video_mode(const Size& size, bool fullscreen)
   }
 }
 
+void
+GLRenderer::set_gamma(float gamma)
+{
+  Uint16 ramp[256];
+  SDL_CalculateGammaRamp(gamma, ramp);
+  SDL_SetWindowGammaRamp(window, ramp, ramp, ramp);
+}
+
 /* EOF */
diff --git a/src/video/gl/gl_renderer.hpp b/src/video/gl/gl_renderer.hpp
index 028222504..359103a0a 100644
--- a/src/video/gl/gl_renderer.hpp
+++ b/src/video/gl/gl_renderer.hpp
@@ -129,6 +129,7 @@ public:
   void resize(int w, int h);
   void apply_config();
   void apply_video_mode(const Size& size, bool fullscreen);
+  void set_gamma(float gamma);
 };
 
 #endif
diff --git a/src/video/renderer.hpp b/src/video/renderer.hpp
index 8bb39c7ac..e4430ad80 100644
--- a/src/video/renderer.hpp
+++ b/src/video/renderer.hpp
@@ -52,6 +52,7 @@ public:
   virtual void flip() = 0;
   virtual void resize(int w, int h) = 0;
   virtual void apply_config() = 0;
+  virtual void set_gamma(float gamma) = 0;
 
   static Renderer* instance() { assert(instance_); return instance_; }
   
diff --git a/src/video/sdl/sdl_renderer.cpp b/src/video/sdl/sdl_renderer.cpp
index 591a9e5ec..26da4d31e 100644
--- a/src/video/sdl/sdl_renderer.cpp
+++ b/src/video/sdl/sdl_renderer.cpp
@@ -414,4 +414,12 @@ SDLRenderer::resize(int, int)
     
 }
 
+void
+SDLRenderer::set_gamma(float gamma)
+{
+  Uint16 ramp[256];
+  SDL_CalculateGammaRamp(gamma, ramp);
+  SDL_SetWindowGammaRamp(window, ramp, ramp, ramp);
+}
+
 /* EOF */
diff --git a/src/video/sdl/sdl_renderer.hpp b/src/video/sdl/sdl_renderer.hpp
index b03cf4137..042a2855d 100644
--- a/src/video/sdl/sdl_renderer.hpp
+++ b/src/video/sdl/sdl_renderer.hpp
@@ -35,6 +35,7 @@ public:
   void flip();
   void resize(int w, int h);
   void apply_config() {}
+  void set_gamma(float gamma);
 
   SDL_Renderer* get_sdl_renderer() const { return renderer; };
 
-- 
2.11.0