Add option to disable gamma correction.

Gamma correction disable by default for MacOSX.

3 files changed, 20 insertions, 4 deletions

diff --git a/src/client.cpp b/src/client.cpp
index fe7d8f987..0f02375a1 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -663,6 +663,7 @@ void Client::gameInit()
     config.addListener("fpslimit", this);
     config.addListener("guialpha", this);
     config.addListener("gamma", this);
+    config.addListener("enableGamma", this);
     config.addListener("particleEmitterSkip", this);
     config.addListener("vsync", this);
     config.addListener("repeateDelay", this);
@@ -1682,7 +1683,7 @@ void Client::optionChanged(const std::string &name)
         setGuiAlpha(config.getFloatValue("guialpha"));
         ImageHelper::setEnableAlpha(config.getFloatValue("guialpha") != 1.0f);
     }
-    else if (name == "gamma")
+    else if (name == "gamma" || name == "enableGamma")
     {
         applyGamma();
     }
@@ -2711,8 +2712,11 @@ void Client::applyGrabMode()
 
 void Client::applyGamma()
 {
-    const float val = config.getFloatValue("gamma");
-    SDL_SetGamma(val, val, val);
+    if (config.getFloatValue("enableGamma"))
+    {
+        const float val = config.getFloatValue("gamma");
+        SDL_SetGamma(val, val, val);
+    }
 }
 
 void Client::applyVSync()
diff --git a/src/defaults.cpp b/src/defaults.cpp
index bd51110ce..57b87dafe 100644
--- a/src/defaults.cpp
+++ b/src/defaults.cpp
@@ -284,6 +284,11 @@ DefaultsData* getConfigDefaults()
     AddDEF("protectChatFocus", true);
     AddDEF("screenButtonsSize", 1);
     AddDEF("screenJoystickSize", 1);
+#if defined(__APPLE__)
+    AddDEF("enableGamma", false);
+#else
+    AddDEF("enableGamma", true);
+#endif
     return configData;
 }
 
diff --git a/src/gui/setup_visual.cpp b/src/gui/setup_visual.cpp
index e1ef59e06..835c3640f 100644
--- a/src/gui/setup_visual.cpp
+++ b/src/gui/setup_visual.cpp
@@ -97,11 +97,18 @@ Setup_Visual::Setup_Visual(const Widget2 *const widget) :
     new SetupItemSlider2(_("Particle physics"), "", "particleFastPhysics",
         this, "particleFastPhysicsEvent", 0, 2, mParticleTypeList);
 
-    new SetupItemLabel(_("Other"), "", this);
+
+    new SetupItemLabel(_("Gamma"), "", this);
+
+    new SetupItemCheckBox(_("Enable gamma control"),
+        "", "enableGamma", this, "enableGammaEvent");
 
     new SetupItemSlider(_("Gamma"), "", "gamma",
         this, "gammeEvent", 1, 20, 350, true);
 
+
+    new SetupItemLabel(_("Other"), "", this);
+
     mVSyncList->push_back(_("default"));
     mVSyncList->push_back(_("off"));
     mVSyncList->push_back(_("on"));