From 298b3ed2efbf52ba2887aa8acacf4677b3cf0532 Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Wed, 13 May 2015 15:08:47 +0200
Subject: [PATCH] Create the GraphicsWindowSDL2 directly

---
 apps/openmw/engine.cpp                   |   8 +-
 components/sdlutil/sdlgraphicswindow.cpp | 106 -----------------------
 components/sdlutil/sdlgraphicswindow.hpp |   2 -
 3 files changed, 3 insertions(+), 113 deletions(-)

diff --git a/apps/openmw/engine.cpp b/apps/openmw/engine.cpp
index 7f98f6ad7f..98e1c5a282 100644
--- a/apps/openmw/engine.cpp
+++ b/apps/openmw/engine.cpp
@@ -352,8 +352,6 @@ void OMW::Engine::createWindow(Settings::Manager& settings)
 
     setWindowIcon();
 
-    SDLUtil::setupWindowingSystemInterface();
-
     osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
     SDL_GetWindowPosition(mWindow, &traits->x, &traits->y);
     SDL_GetWindowSize(mWindow, &traits->width, &traits->height);
@@ -371,11 +369,11 @@ void OMW::Engine::createWindow(Settings::Manager& settings)
     traits->doubleBuffer = true;
     traits->inheritedWindowData = new SDLUtil::GraphicsWindowSDL2::WindowData(mWindow);
 
-    osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
-    if(!gc.valid()) throw std::runtime_error("Failed to create GraphicsContext");
+    osg::ref_ptr<SDLUtil::GraphicsWindowSDL2> graphicsWindow = new SDLUtil::GraphicsWindowSDL2(traits);
+    if(!graphicsWindow->valid()) throw std::runtime_error("Failed to create GraphicsContext");
 
     osg::ref_ptr<osg::Camera> camera = mViewer->getCamera();
-    camera->setGraphicsContext(gc.get());
+    camera->setGraphicsContext(graphicsWindow);
     camera->setViewport(0, 0, width, height);
 
     mViewer->realize();
diff --git a/components/sdlutil/sdlgraphicswindow.cpp b/components/sdlutil/sdlgraphicswindow.cpp
index 1424337ab6..6c7bac12eb 100644
--- a/components/sdlutil/sdlgraphicswindow.cpp
+++ b/components/sdlutil/sdlgraphicswindow.cpp
@@ -163,110 +163,4 @@ void GraphicsWindowSDL2::raiseWindow()
     SDL_RaiseWindow(mWindow);
 }
 
-
-class SDL2WindowingSystemInterface : public osg::GraphicsContext::WindowingSystemInterface
-{
-public:
-    SDL2WindowingSystemInterface()
-    {
-        OSG_INFO<< "SDL2WindowingSystemInterface()" <<std::endl;
-    }
-
-    virtual ~SDL2WindowingSystemInterface()
-    {
-        if(osg::Referenced::getDeleteHandler())
-        {
-            osg::Referenced::getDeleteHandler()->setNumFramesToRetainObjects(0);
-            osg::Referenced::getDeleteHandler()->flushAll();
-        }
-
-        //OSG_NOTICE<< "~SDL2WindowingSystemInterface()" <<std::endl;
-    }
-
-    virtual unsigned int getNumScreens(const osg::GraphicsContext::ScreenIdentifier&/*si*/)
-    {
-        return SDL_GetNumVideoDisplays();
-    }
-
-    virtual void getScreenSettings(const osg::GraphicsContext::ScreenIdentifier &si, osg::GraphicsContext::ScreenSettings &resolution)
-    {
-        SDL_DisplayMode mode;
-        if(SDL_GetCurrentDisplayMode(si.screenNum, &mode) == 0)
-        {
-            int bpp = 32;
-            Uint32 rmask, gmask, bmask, amask;
-            SDL_PixelFormatEnumToMasks(mode.format, &bpp, &rmask, &gmask, &bmask, &amask);
-
-            resolution.width = mode.w;
-            resolution.height = mode.h;
-            resolution.colorDepth = bpp;
-            resolution.refreshRate = mode.refresh_rate;
-        }
-        else
-        {
-            OSG_NOTICE<< "Unable to query screen \""<<si.screenNum<<"\"." <<std::endl;
-            resolution.width = 0;
-            resolution.height = 0;
-            resolution.colorDepth = 0;
-            resolution.refreshRate = 0;
-        }
-    }
-
-    virtual bool setScreenSettings(const osg::GraphicsContext::ScreenIdentifier&/*si*/, const osg::GraphicsContext::ScreenSettings&/*resolution*/)
-    {
-        // FIXME: SDL sets a new video mode by having the fullscreen flag on an
-        // appropriately-sized window, rather than changing it 'raw'.
-        return false;
-    }
-
-    virtual void enumerateScreenSettings(const osg::GraphicsContext::ScreenIdentifier &si, osg::GraphicsContext::ScreenSettingsList &resolutionList)
-    {
-        osg::GraphicsContext::ScreenSettingsList().swap(resolutionList);
-
-        int num_modes = SDL_GetNumDisplayModes(si.screenNum);
-        resolutionList.reserve(num_modes);
-
-        for(int i = 0;i < num_modes;++i)
-        {
-            SDL_DisplayMode mode;
-            if(SDL_GetDisplayMode(si.screenNum, i, &mode) != 0)
-            {
-                OSG_NOTICE<< "Failed to get info for display mode "<<i <<std::endl;
-                continue;
-            }
-
-            int bpp = 32;
-            Uint32 rmask, gmask, bmask, amask;
-            if(SDL_PixelFormatEnumToMasks(mode.format, &bpp, &rmask, &gmask, &bmask, &amask) == SDL_FALSE)
-            {
-                OSG_NOTICE<< "Failed to get pixel format info for format ID "<<mode.format <<std::endl;
-                continue;
-            }
-
-            resolutionList.push_back(osg::GraphicsContext::ScreenSettings(mode.w, mode.h, mode.refresh_rate, bpp));
-        }
-
-        if(resolutionList.empty())
-        {
-            OSG_NOTICE<< "SDL2WindowingSystemInterface::enumerateScreenSettings() not supported." <<std::endl;
-        }
-    }
-
-    virtual osg::GraphicsContext* createGraphicsContext(osg::GraphicsContext::Traits *traits)
-    {
-        // No PBuffer support (you should use FBOs anyway)
-        if(traits->pbuffer)
-            return NULL;
-
-        osg::ref_ptr<GraphicsWindowSDL2> window = new GraphicsWindowSDL2(traits);
-        if(window->valid()) return window.release();
-        return NULL;
-    }
-};
-
-void setupWindowingSystemInterface()
-{
-    osg::GraphicsContext::setWindowingSystemInterface(new SDL2WindowingSystemInterface);
-}
-
 }
diff --git a/components/sdlutil/sdlgraphicswindow.hpp b/components/sdlutil/sdlgraphicswindow.hpp
index cfe40d98e9..45cf470028 100644
--- a/components/sdlutil/sdlgraphicswindow.hpp
+++ b/components/sdlutil/sdlgraphicswindow.hpp
@@ -101,8 +101,6 @@ public:
     };
 };
 
-void setupWindowingSystemInterface();
-
 }
 
 #endif /* OSGGRAPHICSWINDOW_H */