joey pedroza
2014-09-26 18:10:06 UTC
Hi Team,
It was decided that it is a priority to get this project to run on windows. So I went down the path of trying to get it to work. That is my life right now.
Unfortunately they don't want to use SDL 2.
Here is where I'm at currently, I have been able to successfully compile the latest OSG with OpenGLES2.0 by removing the two files suggested GraphicsWindowWin32 and PixelBufferWin32. I am using PowerVR open gl libraries. This is an emulator. It currently works for the overlay project so I know this will work here.
Now I need to pass a graphic context to my code but the samples I saw do this. and I no longer have GraphicsWindowWin32? how else can I get a gc?
osg::ref_ptr<osg::Referenced> windata = new osgViewer::GraphicsWindowWin32::WindowData( hwnd );
/** WindowData is used to pass in the Win32 window handle attached the GraphicsContext::Traits structure.*/
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = 800;
traits->height = 600;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->inheritedWindowData = windata;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext( traits.get() );
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext( gc );
camera->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
camera->setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
camera->setClearColor( osg::Vec4f(0.2f, 0.2f, 0.4f, 1.0f) );
camera->setProjectionMatrixAsPerspective( 30.0f,(double)traits->width/(double)traits->height,1.0,1000.0 );
g_viewer = new osgViewer::Viewer;
g_viewer->setCamera( camera.get() );
g_viewer->setSceneData( osgDB::readNodeFile("cessna.osg") );
g_viewer->setKeyEventSetsDone( 0 );
g_viewer->setCameraManipulator( new osgGA::TrackballManipulator );
In our overlay project which is where we get the graphic context that we want to pass on to osg the code is like so
case WM_CREATE:
egl_window = hWnd;
//Store the device context.
hDC = GetDC(hWnd);
//Get the default display.
egl_display = eglGetDisplay(hDC);
//eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
//Initialize EGL.
eglInitialize(egl_display, &egl_major_version, &egl_minor_version);
//Make OpenGL ES the current API.
eglBindAPI(EGL_OPENGL_ES_API);
//Find a configuration that matches all requirements.
eglChooseConfig(egl_display, egl_config_attributes, &egl_config, 1, &configs);
//Create a drawing surface.
egl_surface = eglCreateWindowSurface(egl_display, egl_config, egl_window, NULL);
//Create a context.
egl_context = eglCreateContext(egl_display, egl_config, NULL, egl_context_attributes);
//Bind the context to the current thread and use window surface for drawing.
eglMakeCurrent(egl_display, egl_surface, egl_surface, egl_context);
//Specify the minimum number of video frame periods per buffer swap.
//If interval is set to a value of 0, buffer swaps are not synchronized to a video frame,
//and the swap happens as soon as the render is complete.
eglSwapInterval(egl_display, 1);
//eglSwapInterval(egl_display, 0);
//Get the version of OpenGL ES and GL Shading Language.
opengl_es_version = glGetString(GL_VERSION);
glsl_version = glGetString(GL_SHADING_LANGUAGE_VERSION);
//Set the clear values for the color buffer.
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
//Set the OpenGL display settings.
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glDepthFunc(GL_LEQUAL);
glClearDepthf(1.0f);
glDepthRangef(0.0f, 1.0f);
//Load the default shader program.
shader.load_default_shader();
default_shader_program = shader.get_default_shader_program();
//Generate texture names.
generate_texture_names(texture_id);
Thank you!
Cheers,
joey
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=61182#61182
It was decided that it is a priority to get this project to run on windows. So I went down the path of trying to get it to work. That is my life right now.
Unfortunately they don't want to use SDL 2.
Here is where I'm at currently, I have been able to successfully compile the latest OSG with OpenGLES2.0 by removing the two files suggested GraphicsWindowWin32 and PixelBufferWin32. I am using PowerVR open gl libraries. This is an emulator. It currently works for the overlay project so I know this will work here.
Now I need to pass a graphic context to my code but the samples I saw do this. and I no longer have GraphicsWindowWin32? how else can I get a gc?
osg::ref_ptr<osg::Referenced> windata = new osgViewer::GraphicsWindowWin32::WindowData( hwnd );
/** WindowData is used to pass in the Win32 window handle attached the GraphicsContext::Traits structure.*/
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = 800;
traits->height = 600;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->inheritedWindowData = windata;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext( traits.get() );
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext( gc );
camera->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
camera->setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
camera->setClearColor( osg::Vec4f(0.2f, 0.2f, 0.4f, 1.0f) );
camera->setProjectionMatrixAsPerspective( 30.0f,(double)traits->width/(double)traits->height,1.0,1000.0 );
g_viewer = new osgViewer::Viewer;
g_viewer->setCamera( camera.get() );
g_viewer->setSceneData( osgDB::readNodeFile("cessna.osg") );
g_viewer->setKeyEventSetsDone( 0 );
g_viewer->setCameraManipulator( new osgGA::TrackballManipulator );
In our overlay project which is where we get the graphic context that we want to pass on to osg the code is like so
case WM_CREATE:
egl_window = hWnd;
//Store the device context.
hDC = GetDC(hWnd);
//Get the default display.
egl_display = eglGetDisplay(hDC);
//eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
//Initialize EGL.
eglInitialize(egl_display, &egl_major_version, &egl_minor_version);
//Make OpenGL ES the current API.
eglBindAPI(EGL_OPENGL_ES_API);
//Find a configuration that matches all requirements.
eglChooseConfig(egl_display, egl_config_attributes, &egl_config, 1, &configs);
//Create a drawing surface.
egl_surface = eglCreateWindowSurface(egl_display, egl_config, egl_window, NULL);
//Create a context.
egl_context = eglCreateContext(egl_display, egl_config, NULL, egl_context_attributes);
//Bind the context to the current thread and use window surface for drawing.
eglMakeCurrent(egl_display, egl_surface, egl_surface, egl_context);
//Specify the minimum number of video frame periods per buffer swap.
//If interval is set to a value of 0, buffer swaps are not synchronized to a video frame,
//and the swap happens as soon as the render is complete.
eglSwapInterval(egl_display, 1);
//eglSwapInterval(egl_display, 0);
//Get the version of OpenGL ES and GL Shading Language.
opengl_es_version = glGetString(GL_VERSION);
glsl_version = glGetString(GL_SHADING_LANGUAGE_VERSION);
//Set the clear values for the color buffer.
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
//Set the OpenGL display settings.
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glDepthFunc(GL_LEQUAL);
glClearDepthf(1.0f);
glDepthRangef(0.0f, 1.0f);
//Load the default shader program.
shader.load_default_shader();
default_shader_program = shader.get_default_shader_program();
//Generate texture names.
generate_texture_names(texture_id);
Thank you!
Cheers,
joey
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=61182#61182
