- Added OsgGraphicsWindowSDL2 in OsgGraph

git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@6128 30fe4595-0a0c-4342-8851-515496e4dcbd

Former-commit-id: a814cdbe2e8a62fb9d6969dc5496b7a29d2d6d57
Former-commit-id: 78cc40b4cca90e7ec0ba9b11743c060e26585d42

src/modules/graphic/osggraph/CMakeLists.txt

@@ -25,6 +25,7 @@ SET(OSGGRAPH_HEADERS Utils/OsgVectorArrayAdapter.h
                      Render/OsgReflectionMapping.h
                      Render/OsgShader.h
                        
+					 Viewer/OsgGraphicsWindow.h
 					 Viewer/OsgView.h  	
                      Viewer/OsgScreens.h 
                      Viewer/OsgCamera.h
@@ -64,6 +65,7 @@ SET(OSGGRAPH_SOURCES Utils/OsgMath.cpp
                      Render/OsgReflectionMapping.cpp
                      Render/OsgShader.cpp
 
+					 Viewer/OsgGraphicsWindow.cpp
 					 Viewer/OsgView.cpp 
                      Viewer/OsgScreens.cpp
                      Viewer/OsgCamera.cpp

src/modules/graphic/osggraph/Viewer/OsgGraphicsWindow.cpp

@@ -0,0 +1,227 @@
+/***************************************************************************
+
+    file                 : OsgGraphicsWindows.cpp
+    created              : Thu Sep 15 15:23:49 CEST 2015
+    copyright            : (C)2015 by Xavier Bertaux
+    email                : bertauxx@yahoo.fr
+    version              : $Id: OsgGraphicsWindows.cpp 6125 2015-09-15 06:02:49Z torcs-ng $
+
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   Based on OpenMW code                                                  *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "OsgGraphicsWindow.h"
+
+#include <SDL_video.h>
+
+#include <osg/DeleteHandler>
+#include <osg/Version>
+
+namespace OSGUtil
+{
+
+OsgGraphicsWindowSDL2::~OsgGraphicsWindowSDL2()
+{
+    close(true);
+}
+
+OsgGraphicsWindowSDL2::OsgGraphicsWindowSDL2(osg::GraphicsContext::Traits *traits)
+    : m_Window(0)
+    , m_Context(0)
+    , m_Valid(false)
+    , m_Realized(false)
+    , m_OwnsWindow(false)
+{
+    _traits = traits;
+
+    init();
+    if(valid())
+    {
+        setState(new osg::State);
+        getState()->setGraphicsContext(this);
+
+        if(_traits.valid() && _traits->sharedContext.valid())
+        {
+            getState()->setContextID(_traits->sharedContext->getState()->getContextID());
+            incrementContextIDUsageCount(getState()->getContextID());
+        }
+        else
+        {
+            getState()->setContextID(osg::GraphicsContext::createNewContextID());
+        }
+    }
+}
+
+
+bool OsgGraphicsWindowSDL2::setWindowDecorationImplementation(bool flag)
+{
+    if(!m_Window) return false;
+
+    SDL_SetWindowBordered(m_Window, flag ? SDL_TRUE : SDL_FALSE);
+    return true;
+}
+
+bool OsgGraphicsWindowSDL2::setWindowRectangleImplementation(int x, int y, int width, int height)
+{
+    if(!m_Window) return false;
+
+    SDL_SetWindowPosition(m_Window, x, y);
+    SDL_SetWindowSize(m_Window, width, height);
+
+    return true;
+}
+
+void OsgGraphicsWindowSDL2::setWindowName(const std::string &name)
+{
+    if(!m_Window) return;
+
+    SDL_SetWindowTitle(m_Window, name.c_str());
+    _traits->windowName = name;
+}
+
+void OsgGraphicsWindowSDL2::setCursor(MouseCursor mouseCursor)
+{
+    _traits->useCursor = false;
+}
+
+
+void OsgGraphicsWindowSDL2::init()
+{
+    if(m_Valid) return;
+
+    if(!_traits.valid())
+        return;
+
+    WindowData *inheritedWindowData = dynamic_cast<WindowData*>(_traits->inheritedWindowData.get());
+    m_Window = inheritedWindowData ? inheritedWindowData->m_Window : NULL;
+
+    m_OwnsWindow = (m_Window == 0);
+
+    if(m_OwnsWindow)
+    {
+        OSG_NOTICE<<"Error: No SDL window provided."<<std::endl;
+        return;
+    }
+
+    // SDL will change the current context when it creates a new one, so we
+    // have to get the current one to be able to restore it afterward.
+    SDL_Window *oldWin = SDL_GL_GetCurrentWindow();
+    SDL_GLContext oldCtx = SDL_GL_GetCurrentContext();
+
+    m_Context = SDL_GL_CreateContext(m_Window);
+    if(!m_Context)
+    {
+        OSG_NOTICE<< "Error: Unable to create OpenGL graphics context: "<<SDL_GetError() <<std::endl;
+        return;
+    }
+
+    SDL_GL_SetSwapInterval(_traits->vsync ? 1 : 0);
+
+    SDL_GL_MakeCurrent(oldWin, oldCtx);
+
+    m_Valid = true;
+
+#if OSG_MIN_VERSION_REQUIRED(3,3,4)
+    getEventQueue()->syncWindowRectangleWithGraphicsContext();
+#else
+    getEventQueue()->syncWindowRectangleWithGraphcisContext();
+#endif
+}
+
+bool OsgGraphicsWindowSDL2::realizeImplementation()
+{
+    if(m_Realized)
+    {
+        OSG_NOTICE<< "GraphicsWindowSDL2::realizeImplementation() Already realized" <<std::endl;
+        return true;
+    }
+
+    if(!m_Valid) init();
+    if(!m_Valid) return false;
+
+    SDL_ShowWindow(m_Window);
+
+#if OSG_MIN_VERSION_REQUIRED(3,3,4)
+    getEventQueue()->syncWindowRectangleWithGraphicsContext();
+#else
+    getEventQueue()->syncWindowRectangleWithGraphcisContext();
+#endif
+
+    m_Realized = true;
+
+    return true;
+}
+
+bool OsgGraphicsWindowSDL2::makeCurrentImplementation()
+{
+    if(!m_Realized)
+    {
+        OSG_NOTICE<<"Warning: GraphicsWindow not realized, cannot do makeCurrent."<<std::endl;
+        return false;
+    }
+
+    return SDL_GL_MakeCurrent(m_Window, m_Context)==0;
+}
+
+bool OsgGraphicsWindowSDL2::releaseContextImplementation()
+{
+    if(!m_Realized)
+    {
+        OSG_NOTICE<< "Warning: GraphicsWindow not realized, cannot do releaseContext." <<std::endl;
+        return false;
+    }
+
+    return SDL_GL_MakeCurrent(NULL, NULL) == 0;
+}
+
+
+void OsgGraphicsWindowSDL2::closeImplementation()
+{
+    if(m_Context)
+        SDL_GL_DeleteContext(m_Context);
+
+    m_Context = NULL;
+
+    if(m_Window && m_OwnsWindow)
+        SDL_DestroyWindow(m_Window);
+
+    m_Window = NULL;
+
+    m_Valid = false;
+    m_Realized = false;
+}
+
+void OsgGraphicsWindowSDL2::swapBuffersImplementation()
+{
+    if(!m_Realized) return;
+
+    SDL_GL_SwapWindow(m_Window);
+}
+
+void OsgGraphicsWindowSDL2::setSyncToVBlank(bool on)
+{
+    SDL_Window *oldWin = SDL_GL_GetCurrentWindow();
+    SDL_GLContext oldCtx = SDL_GL_GetCurrentContext();
+
+    SDL_GL_MakeCurrent(m_Window, m_Context);
+
+    SDL_GL_SetSwapInterval(on ? 1 : 0);
+
+    SDL_GL_MakeCurrent(oldWin, oldCtx);
+}
+
+void OsgGraphicsWindowSDL2::raiseWindow()
+{
+    SDL_RaiseWindow(m_Window);
+}
+
+}

src/modules/graphic/osggraph/Viewer/OsgGraphicsWindow.h

@@ -0,0 +1,106 @@
+/***************************************************************************
+
+    file                 : OsgGraphicsWindows.h
+    created              : Thu Sep 15 15:23:49 CEST 2015
+    copyright            : (C)2015 by Xavier Bertaux
+    email                : bertauxx@yahoo.fr
+    version              : $Id: OsgGraphicsWindows.h 6125 2015-09-15 06:02:49Z torcs-ng $
+
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *	 Based on OpenMW code                                                  *
+ *                                                                         *
+ ***************************************************************************/
+#ifndef OSGGRAPHICSWINDOW_H
+#define OSGGRAPHICSWINDOW_H
+
+#include <SDL_video.h>
+
+#include <osgViewer/GraphicsWindow>
+
+namespace OSGUtil
+{
+class OsgGraphicsWindowSDL2 : public osgViewer::GraphicsWindow
+{
+    SDL_Window*     m_Window;
+    SDL_GLContext   m_Context;
+
+    bool            m_Valid;
+    bool            m_Realized;
+    bool            m_OwnsWindow;
+
+    void init();
+
+    virtual ~OsgGraphicsWindowSDL2();
+
+public:
+    OsgGraphicsWindowSDL2(osg::GraphicsContext::Traits *traits);
+
+    virtual bool isSameKindAs(const Object* object) const { return dynamic_cast<const OsgGraphicsWindowSDL2*>(object)!=0; }
+    virtual const char* libraryName() const { return "osgViewer"; }
+    virtual const char* className() const { return "OsgGraphicsWindowSDL2"; }
+
+    virtual bool valid() const { return m_Valid; }
+
+    /** Realise the GraphicsContext.*/
+    virtual bool realizeImplementation();
+
+    /** Return true if the graphics context has been realised and is ready to use.*/
+    virtual bool isRealizedImplementation() const { return m_Realized; }
+
+    /** Close the graphics context.*/
+    virtual void closeImplementation();
+
+    /** Make this graphics context current.*/
+    virtual bool makeCurrentImplementation();
+
+    /** Release the graphics context.*/
+    virtual bool releaseContextImplementation();
+
+    /** Swap the front and back buffers.*/
+    virtual void swapBuffersImplementation();
+
+    /** Set sync-to-vblank. */
+    virtual void setSyncToVBlank(bool on);
+
+    /** Set Window decoration.*/
+    virtual bool setWindowDecorationImplementation(bool flag);
+
+    /** Raise specified window */
+    virtual void raiseWindow();
+
+    /** Set the window's position and size.*/
+    virtual bool setWindowRectangleImplementation(int x, int y, int width, int height);
+
+    /** Set the name of the window */
+    virtual void setWindowName(const std::string &name);
+
+    /** Set mouse cursor to a specific shape.*/
+    virtual void setCursor(MouseCursor cursor);
+
+    /** Get focus.*/
+    virtual void grabFocus() {}
+
+    /** Get focus on if the pointer is in this window.*/
+    virtual void grabFocusIfPointerInWindow() {}
+
+    /** WindowData is used to pass in the SDL2 window handle attached to the GraphicsContext::Traits structure. */
+    struct WindowData : public osg::Referenced
+    {
+        WindowData(SDL_Window *window) : m_Window(window)
+        { }
+
+        SDL_Window *m_Window;
+    };
+};
+
+}
+
+#endif /* OSGGRAPHICSWINDOW_H */

src/modules/graphic/osggraph/Viewer/OsgScreens.cpp

@@ -26,11 +26,16 @@
 #include <osg/FrontFace>
 
 #include "OsgScreens.h"
+#include "OsgGraphicsWindow.h"
 #include "OsgDebugHUD.h"
 #include "OsgReflectionMapping.h"
 #include "OsgMain.h"
 #include "OsgCar.h"
 
+#if SDL_MAJOR_VERSION >= 2
+extern SDL_Window* 	GfuiWindow;
+#endif
+
 SDScreens::SDScreens() :
     root(NULL),
     mirrorScene(NULL),
@@ -61,6 +66,7 @@ void SDScreens::Init(int x,int y, int width, int height, osg::ref_ptr<osg::Node>
     //intialising main screen
 
     viewer = new osgViewer::Viewer;
+#if 1 //SDL_MAJOR_VERSION < 2
     //viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
     //SDView * view = new SDView(viewer->getCamera(),0,0, m_Winw, m_Winh, mirrorCam.get());
     //osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> gw = viewer->setUpViewerAsEmbeddedInWindow(0, 0, m_Winw, m_Winh);
@@ -69,7 +75,25 @@ void SDScreens::Init(int x,int y, int width, int height, osg::ref_ptr<osg::Node>
     osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> gw = viewer->setUpViewerAsEmbeddedInWindow(0, 0, width, height);
     viewer->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
     viewer->getCamera()->setPreDrawCallback(new CameraDrawnCallback);
-    //viewer->realize();
+#else
+	viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
+	osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
+    SDL_GetWindowPosition(GfuiWindow, &traits->x, &traits->y);
+    SDL_GetWindowSize(GfuiWindow, &traits->width, &traits->height);
+	traits->windowName = SDL_GetWindowTitle(GfuiWindow);
+    traits->windowDecoration = !(SDL_GetWindowFlags(GfuiWindow)&SDL_WINDOW_BORDERLESS);
+    traits->screenNum = SDL_GetWindowDisplayIndex(GfuiWindow);
+    traits->vsync = true;
+    traits->doubleBuffer = true;
+    traits->inheritedWindowData = new OSGUtil::OsgGraphicsWindowSDL2::WindowData(GfuiWindow);
+
+	osg::ref_ptr<OSGUtil::OsgGraphicsWindowSDL2> gw = new OSGUtil::OsgGraphicsWindowSDL2(traits);
+	viewer->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
+    viewer->getCamera()->setPreDrawCallback(new CameraDrawnCallback);
+
+    if(!gw->valid()) throw 
+		std::runtime_error("Failed to create GraphicsContext");
+#endif
 
     osg::ref_ptr<osg::Camera> mirrorCam = new osg::Camera;
     mirrorCam->setGraphicsContext(gw);