forgot to add file

desmume/src/windows/ogl.cpp

@@ -0,0 +1,69 @@
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <gl/gl.h>
+#include <gl/glext.h>
+#include "console.h"
+
+extern HWND		hwnd;
+
+int CheckHardwareSupport(HDC hdc)
+{
+   int PixelFormat = GetPixelFormat(hdc);
+   PIXELFORMATDESCRIPTOR pfd;
+
+   DescribePixelFormat(hdc,PixelFormat,sizeof(PIXELFORMATDESCRIPTOR),&pfd);
+   if ((pfd.dwFlags & PFD_GENERIC_FORMAT) && !(pfd.dwFlags & PFD_GENERIC_ACCELERATED))
+      return 0; // Software acceleration OpenGL
+
+   else if ((pfd.dwFlags & PFD_GENERIC_FORMAT) && (pfd.dwFlags & PFD_GENERIC_ACCELERATED))
+      return 1; // Half hardware acceleration OpenGL (MCD driver)
+
+   else if ( !(pfd.dwFlags & PFD_GENERIC_FORMAT) && !(pfd.dwFlags & PFD_GENERIC_ACCELERATED))
+      return 2; // Full hardware acceleration OpenGL
+   return -1; // check error
+}
+
+bool windows_opengl_init()
+{
+	HDC						oglDC = NULL;
+	HGLRC					hRC = NULL;
+	int						pixelFormat;
+	PIXELFORMATDESCRIPTOR	pfd;
+	int						res;
+	char					*opengl_modes[3]={"software","half hardware (MCD driver)","hardware"};
+
+	oglDC = GetDC (hwnd);
+
+	memset(&pfd,0, sizeof(PIXELFORMATDESCRIPTOR));
+	pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
+	pfd.nVersion = 1;
+	pfd.dwFlags =  PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+	pfd.iPixelType = PFD_TYPE_RGBA;
+	pfd.cColorBits = 24;
+	pfd.cDepthBits = 24;
+	pfd.cAlphaBits = 8;
+	pfd.cStencilBits = 8;
+	pfd.iLayerType = PFD_MAIN_PLANE ;
+
+	pixelFormat = ChoosePixelFormat(oglDC, &pfd);
+	if (pixelFormat == 0)
+		return false;
+
+	if(!SetPixelFormat(oglDC, pixelFormat, &pfd))
+		return false;
+
+	hRC = wglCreateContext(oglDC);
+	if (!hRC)
+		return false;
+
+	if(!wglMakeCurrent(oglDC, hRC))
+		return false;
+
+	res=CheckHardwareSupport(oglDC);
+	if (res>=0&&res<=2) 
+			printlog("OpenGL mode: %s\n",opengl_modes[res]); 
+		else 
+			printlog("OpenGL mode: uknown\n");
+
+	return true;
+}