add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/OpenGLWindow/Win32OpenGLWindow.cpp

@@ -0,0 +1,182 @@
+/*
+Copyright (c) 2012 Advanced Micro Devices, Inc.  
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+//Originally written by Erwin Coumans
+
+
+#include "Win32OpenGLWindow.h"
+
+#include "OpenGLInclude.h"
+
+//#include "Bullet3Common/b3Vector3.h"
+
+#include "Win32InternalWindowData.h"
+#include <stdio.h>
+
+static void printGLString(const char *name, GLenum s) {
+    const char *v = (const char *) glGetString(s);
+  printf("%s = %s\n",name, v);
+}
+
+bool sOpenGLVerbose = true;
+
+void Win32OpenGLWindow::enableOpenGL()
+{
+
+	PIXELFORMATDESCRIPTOR pfd;
+	int format;
+	
+	// get the device context (DC)
+	m_data->m_hDC = GetDC( m_data->m_hWnd );
+	
+	// set the pixel format for the DC
+	ZeroMemory( &pfd, sizeof( pfd ) );
+	pfd.nSize = sizeof( pfd );
+	pfd.nVersion = 1;
+	pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+	pfd.iPixelType = PFD_TYPE_RGBA;
+	pfd.cColorBits = 32;
+	pfd.cRedBits = 8;
+    pfd.cGreenBits = 8;
+    pfd.cBlueBits = 8;
+    pfd.cAlphaBits = 8;
+
+	pfd.cDepthBits = 24;
+	pfd.cStencilBits = 8;//1;
+	pfd.iLayerType = PFD_MAIN_PLANE;
+	format = ChoosePixelFormat( m_data->m_hDC, &pfd );
+	SetPixelFormat( m_data->m_hDC, format, &pfd );
+	
+	// create and enable the render context (RC)
+	m_data->m_hRC = wglCreateContext( m_data->m_hDC );
+	wglMakeCurrent( m_data->m_hDC, m_data->m_hRC );
+
+	if (sOpenGLVerbose)
+	{
+		 printGLString("Version", GL_VERSION);
+		printGLString("Vendor", GL_VENDOR);
+		printGLString("Renderer", GL_RENDERER);
+	}
+    //printGLString("Extensions", GL_EXTENSIONS);
+
+}
+
+
+
+void Win32OpenGLWindow::disableOpenGL()
+{
+	wglMakeCurrent( NULL, NULL );
+	wglDeleteContext( m_data->m_hRC );
+//	ReleaseDC( m_data->m_hWnd, m_data->m_hDC );
+
+}
+
+
+
+
+
+void	Win32OpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
+{
+	Win32Window::createWindow(ci);
+
+	//VideoDriver = video::createOpenGLDriver(CreationParams, FileSystem, this);
+	enableOpenGL();
+
+}
+
+
+
+
+Win32OpenGLWindow::Win32OpenGLWindow()
+{
+	
+	
+}
+
+Win32OpenGLWindow::~Win32OpenGLWindow()
+{
+	
+}
+
+
+void	Win32OpenGLWindow::closeWindow()
+{
+	disableOpenGL();
+
+	Win32Window::closeWindow();
+}
+
+
+
+void	Win32OpenGLWindow::startRendering()
+{
+		pumpMessage();
+		//don't clear all 3 buffers because some AMD drivers are buggy
+		//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT|GL_STENCIL_BUFFER_BIT);
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+		
+
+		//glCullFace(GL_BACK);
+		//glFrontFace(GL_CCW);
+		glEnable(GL_DEPTH_TEST);
+
+}
+
+
+void	Win32OpenGLWindow::renderAllObjects()
+{
+}
+
+void	Win32OpenGLWindow::endRendering()
+ {
+	SwapBuffers( m_data->m_hDC );
+
+}
+
+int Win32OpenGLWindow::fileOpenDialog(char* fileName, int maxFileNameLength)
+{
+	//wchar_t wideChars[1024];
+
+		OPENFILENAME ofn ;
+	ZeroMemory( &ofn , sizeof( ofn));
+	ofn.lStructSize = sizeof ( ofn );
+	ofn.hwndOwner = NULL  ;
+
+#ifdef UNICODE
+	WCHAR bla[1024];
+	ofn.lpstrFile = bla;
+	ofn.lpstrFile[0] = '\0';
+	ofn.nMaxFile = 1023;
+	ofn.lpstrFilter = L"URDF\0*.urdf\0";
+#else
+	ofn.lpstrFile = fileName;
+	ofn.lpstrFile[0] = '\0';
+	ofn.nMaxFile = 1023;
+	//ofn.lpstrFilter = "All\0*.*\0Text\0*.TXT\0";
+	ofn.lpstrFilter = "URDF\0*.urdf\0";
+	
+#endif
+
+	ofn.nFilterIndex =1;
+	ofn.lpstrFileTitle = NULL ;
+	ofn.nMaxFileTitle = 0 ;
+	ofn.lpstrInitialDir=NULL ;
+	ofn.Flags = OFN_PATHMUSTEXIST|OFN_FILEMUSTEXIST ;
+	GetOpenFileName( &ofn );
+	return strlen(fileName);
+
+
+	//return 0;
+}
+
+