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bullet3/examples/OpenGLWindow/X11OpenGLWindow.cpp

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#include "X11OpenGLWindow.h"
#include "OpenGLInclude.h"
#include<stdio.h>
#include<stdlib.h>
#ifdef GLEW_STATIC
#include "CustomGL/glew.h"
#else
#include <GL/glew.h>
#endif//GLEW_STATIC
#ifdef GLEW_DYNAMIC_LOAD_ALL_GLX_FUNCTIONS
#include "CustomGL/glxew.h"
#else
#include<GL/glx.h>
#endif // GLEW_DYNAMIC_LOAD_ALL_GLX_FUNCTIONS
#include <assert.h>
//#define DYNAMIC_LOAD_X11_FUNCTIONS
#ifdef DYNAMIC_LOAD_X11_FUNCTIONS
#include <dlfcn.h>
#endif //DYNAMIC_LOAD_X11_FUNCTIONS
//#include<X11/X.h>
//#include<X11/Xlib.h>
//#include<GL/gl.h>
//defined in GL/glxew.h
//#include<GL/glu.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
GLint att[] = { GLX_RGBA,
GLX_DEPTH_SIZE, 24,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_ALPHA_SIZE , 8,
GLX_STENCIL_SIZE , 8,
GLX_DOUBLEBUFFER,
None };
/*
static int att[] =
{
GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
GLX_RENDER_TYPE , GLX_RGBA_BIT,
GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_ALPHA_SIZE , 8,
GLX_DEPTH_SIZE , 24,
GLX_STENCIL_SIZE , 8,
GLX_DOUBLEBUFFER , True,
None
};
*/
static bool forceOpenGL3 = true;
#ifdef DYNAMIC_LOAD_X11_FUNCTIONS
///our X11 function typedefs
typedef int (*PFNXFREE)(void*);
typedef XErrorHandler (* PFNXSETERRORHANDLER) (XErrorHandler);
typedef int (* PFNXSYNC) (Display* a,Bool b);
typedef Display* (* PFNXOPENDISPLAY) (_Xconst char* a);
typedef Colormap (*PFNXCREATECOLORMAP) (Display* a,Window b,Visual* c,int d);
typedef Window (*PFNXCREATEWINDOW) (Display* a,Window b,int c,int d,unsigned int e,unsigned int f,unsigned int g,int h,unsigned int i,Visual* j,unsigned long k,XSetWindowAttributes* l);
typedef int (*PFNXMAPWINDOW) (Display*, Window);
typedef int (*PFNXSTORENAME) (Display* a,Window b,_Xconst char* c);
typedef int (*PFNXCLOSEDISPLAY) (Display* a);
typedef int (*PFNXDESTROYWINDOW) (Display* a,Window b);
typedef int (*PFNXRAISEWINDOW) (Display* a, Window b);
#if NeedWidePrototypes
typedef KeySym* (*PFNXGETKEYBOARDMAPPING) (Display*,unsigned int,int,int*);
typedef KeySym (*PFNXKEYCODETOKEYSYM) (Display* a,unsigned int b,int c);
#else
typedef KeySym* (*PFNXGETKEYBOARDMAPPING) (Display*,KeyCode,int,int*);
typedef KeySym (*PFNXKEYCODETOKEYSYM) (Display* a,KeyCode b,int c);
#endif
typedef void (*PFNXCONVERTCASE) (KeySym /* sym */,KeySym * /* lower */,KeySym * /* upper */);
typedef int (*PFNXPENDING) (Display* a);
typedef int (*PFNXNEXTEVENT) (Display* a,XEvent* b);
typedef int (*PFNXEVENTSQUEUED) (Display* a,int b);
typedef int (*PFNXPEEKEVENT) (Display* a,XEvent* b);
typedef KeySym (*PFNXLOOKUPKEYSYM) (XKeyEvent* a,int b);
typedef Status (*PFNXGETWINDOWATTRIBUTES) (Display* a,Window b,XWindowAttributes* c);
#define X11_LIBRARY "libX11.so.6"
#define MyXSync m_data->m_x11_XSync
#define MyXGetKeyboardMapping m_data->m_x11_XGetKeyboardMapping
#define MyXSetErrorHandler m_data->m_x11_XSetErrorHandler
#define MyXOpenDisplay m_data->m_x11_XOpenDisplay
#define MyXCreateColormap m_data->m_x11_XCreateColormap
#define MyXCreateWindow m_data->m_x11_XCreateWindow
#define MyXMapWindow m_data->m_x11_XMapWindow
#define MyXStoreName m_data->m_x11_XStoreName
#define MyXDestroyWindow m_data->m_x11_XDestroyWindow
#define MyXRaiseWindow m_data->m_x11_XRaiseWindow
#define MyXCloseDisplay m_data->m_x11_XCloseDisplay
#define MyXKeycodeToKeysym m_data->m_x11_XKeycodeToKeysym
#define MyXConvertCase m_data->m_x11_XConvertCase
#define MyXPending m_data->m_x11_XPending
#define MyXNextEvent m_data->m_x11_XNextEvent
#define MyXEventsQueued m_data->m_x11_XEventsQueued
#define MyXPeekEvent m_data->m_x11_XPeekEvent
#define MyXNextEvent m_data->m_x11_XNextEvent
#define MyXGetWindowAttributes m_data->m_x11_XGetWindowAttributes
#define MyXStoreName m_data->m_x11_XStoreName
#define MyXFree m_data->m_x11_XFree
#define MyXMapWindow m_data->m_x11_XMapWindow
#define MyXStoreName m_data->m_x11_XStoreName
#define MyXLookupKeysym m_data->m_x11_XLookupKeysym
#else
#define MyXSync XSync
#define MyXGetKeyboardMapping XGetKeyboardMapping
#define MyXSetErrorHandler XSetErrorHandler
#define MyXOpenDisplay XOpenDisplay
#define MyXCreateColormap XCreateColormap
#define MyXCreateWindow XCreateWindow
#define MyXMapWindow XMapWindow
#define MyXStoreName XStoreName
#define MyXDestroyWindow XDestroyWindow
#define MyXRaiseWindow XRaiseWindow
#define MyXCloseDisplay XCloseDisplay
#define MyXKeycodeToKeysym XKeycodeToKeysym
#define MyXConvertCase XConvertCase
#define MyXPending XPending
#define MyXNextEvent XNextEvent
#define MyXEventsQueued XEventsQueued
#define MyXPeekEvent XPeekEvent
#define MyXNextEvent XNextEvent
#define MyXGetWindowAttributes XGetWindowAttributes
#define MyXStoreName XStoreName
#define MyXFree XFree
#define MyXMapWindow XMapWindow
#define MyXStoreName XStoreName
#define MyXLookupKeysym XLookupKeysym
#endif//DYNAMIC_LOAD_X11_FUNCTIONS
enum
{
MY_X11_ALT_KEY = 1,
MY_X11_SHIFT_KEY = 2,
MY_X11_CONTROL_KEY = 4
};
struct InternalData2
{
Display* m_dpy;
Window m_root;
XVisualInfo* m_vi;
Colormap m_cmap;
XSetWindowAttributes m_swa;
Window m_win;
GLXContext m_glc;
XWindowAttributes m_gwa;
XEvent m_xev;
GLXFBConfig m_bestFbc;
int m_modifierFlags;
int m_glWidth;
int m_glHeight;
#ifdef DYNAMIC_LOAD_X11_FUNCTIONS
//dynamically load stuff
void* m_x11_library;
PFNXFREE m_x11_XFree;
PFNXSETERRORHANDLER m_x11_XSetErrorHandler;
PFNXSYNC m_x11_XSync;
PFNXOPENDISPLAY m_x11_XOpenDisplay;
PFNXCREATECOLORMAP m_x11_XCreateColormap;
PFNXCREATEWINDOW m_x11_XCreateWindow;
PFNXMAPWINDOW m_x11_XMapWindow;
PFNXSTORENAME m_x11_XStoreName;
PFNXCLOSEDISPLAY m_x11_XCloseDisplay;
PFNXDESTROYWINDOW m_x11_XDestroyWindow;
PFNXRAISEWINDOW m_x11_XRaiseWindow;
PFNXKEYCODETOKEYSYM m_x11_XKeycodeToKeysym;
PFNXGETKEYBOARDMAPPING m_x11_XGetKeyboardMapping;
PFNXCONVERTCASE m_x11_XConvertCase;
PFNXPENDING m_x11_XPending;
PFNXNEXTEVENT m_x11_XNextEvent;
PFNXEVENTSQUEUED m_x11_XEventsQueued;
PFNXPEEKEVENT m_x11_XPeekEvent;
PFNXLOOKUPKEYSYM m_x11_XLookupKeysym;
PFNXGETWINDOWATTRIBUTES m_x11_XGetWindowAttributes;
#endif //DYNAMIC_LOAD_X11_FUNCTIONS
b3WheelCallback m_wheelCallback;
b3MouseMoveCallback m_mouseMoveCallback;
b3MouseButtonCallback m_mouseButtonCallback;
b3ResizeCallback m_resizeCallback;
b3KeyboardCallback m_keyboardCallback;
InternalData2()
:m_dpy(0),
m_vi(0),
m_modifierFlags(0),
m_glWidth(-1),
m_glHeight(-1),
m_wheelCallback(0),
m_mouseMoveCallback(0),
m_mouseButtonCallback(0),
m_resizeCallback(0),
m_keyboardCallback(0)
{
#ifdef DYNAMIC_LOAD_X11_FUNCTIONS
m_x11_library = dlopen(X11_LIBRARY, RTLD_LOCAL | RTLD_NOW);
if (!m_x11_library)
{
// TODO: Properly handle this error.
fprintf(stderr, "Error opening X11 library %s\n", X11_LIBRARY);
exit(EXIT_FAILURE);
}
bool missingFunc = false;
missingFunc = ((m_x11_XFree = (PFNXFREE) dlsym(m_x11_library, "XFree"))==NULL) | missingFunc;
assert(!missingFunc);
if (missingFunc) { fprintf(stderr, "Error: missing func XFree in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XSetErrorHandler = (PFNXSETERRORHANDLER) dlsym(m_x11_library,"XSetErrorHandler"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XSetErrorHandler in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XSetErrorHandler = (PFNXSETERRORHANDLER) dlsym(m_x11_library,"XSetErrorHandler"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XSetErrorHandler in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XSync = (PFNXSYNC) dlsym(m_x11_library,"XSync"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XSync in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XOpenDisplay = (PFNXOPENDISPLAY) dlsym(m_x11_library,"XOpenDisplay"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XOpenDisplay in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XCreateColormap = (PFNXCREATECOLORMAP) dlsym(m_x11_library,"XCreateColormap"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XCreateColormap in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XCreateWindow = (PFNXCREATEWINDOW) dlsym(m_x11_library,"XCreateWindow"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XCreateWindow in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XMapWindow = (PFNXMAPWINDOW) dlsym(m_x11_library,"XMapWindow"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XMapWindow in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XStoreName = (PFNXSTORENAME) dlsym(m_x11_library,"XStoreName"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XStoreName in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XCloseDisplay = (PFNXCLOSEDISPLAY) dlsym(m_x11_library,"XCloseDisplay"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XCloseDisplay in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XDestroyWindow = (PFNXDESTROYWINDOW) dlsym(m_x11_library,"XDestroyWindow"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XDestroyWindow in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XRaiseWindow = (PFNXRAISEWINDOW) dlsym(m_x11_library,"XRaiseWindow"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XRaiseWindow in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XGetKeyboardMapping = (PFNXGETKEYBOARDMAPPING) dlsym(m_x11_library,"XGetKeyboardMapping"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XGetKeyboardMapping in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XKeycodeToKeysym = (PFNXKEYCODETOKEYSYM) dlsym(m_x11_library,"XKeycodeToKeysym"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XKeycodeToKeysym in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XConvertCase = (PFNXCONVERTCASE) dlsym(m_x11_library,"XConvertCase"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XConvertCase in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XPending = (PFNXPENDING) dlsym(m_x11_library,"XPending"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XPending in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XNextEvent = (PFNXNEXTEVENT) dlsym(m_x11_library,"XNextEvent"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XNextEvent in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XEventsQueued = (PFNXEVENTSQUEUED) dlsym(m_x11_library,"XEventsQueued"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XEventsQueued in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XPeekEvent = (PFNXPEEKEVENT) dlsym(m_x11_library,"XPeekEvent"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XPeekEvent in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XLookupKeysym = (PFNXLOOKUPKEYSYM) dlsym(m_x11_library,"XLookupKeysym"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XLookupKeysym in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
missingFunc = ((m_x11_XGetWindowAttributes = (PFNXGETWINDOWATTRIBUTES) dlsym(m_x11_library,"XGetWindowAttributes"))==NULL) | missingFunc;
if (missingFunc) { fprintf(stderr, "Error: missing func XGetWindowAttributes in %s, exiting!\n", X11_LIBRARY); exit(EXIT_FAILURE);}
if (missingFunc)
{
fprintf(stderr, "Error: a missing func in %s, exiting!\n", X11_LIBRARY);
exit(EXIT_FAILURE);
} else
{
printf("X11 functions dynamically loaded using dlopen/dlsym OK!\n");
}
#endif //DYNAMIC_LOAD_X11_FUNCTIONS
}
};
#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
// Helper to check for extension string presence. Adapted from:
// http://www.opengl.org/resources/features/OGLextensions/
static bool isExtensionSupported(const char *extList, const char *extension)
{
const char *start;
const char *where, *terminator;
/* Extension names should not have spaces. */
where = strchr(extension, ' ');
if (where || *extension == '\0')
return false;
/* It takes a bit of care to be fool-proof about parsing the
OpenGL extensions string. Don't be fooled by sub-strings,
etc. */
for (start=extList;;) {
where = strstr(start, extension);
if (!where)
break;
terminator = where + strlen(extension);
if ( where == start || *(where - 1) == ' ' )
if ( *terminator == ' ' || *terminator == '\0' )
return true;
start = terminator;
}
return false;
}
static bool ctxErrorOccurred = false;
static int ctxErrorHandler( Display *dpy, XErrorEvent *ev )
{
ctxErrorOccurred = true;
return 0;
}
X11OpenGLWindow::X11OpenGLWindow()
:m_OpenGLInitialized(false),
m_requestedExit(false)
{
m_data = new InternalData2;
}
X11OpenGLWindow::~X11OpenGLWindow()
{
if (m_OpenGLInitialized)
{
disableOpenGL();
}
delete m_data;
}
void X11OpenGLWindow::enableOpenGL()
{
if (forceOpenGL3)
{
// Get the default screen's GLX extension list
const char *glxExts = glXQueryExtensionsString( m_data->m_dpy,
DefaultScreen( m_data->m_dpy ) );
// NOTE: It is not necessary to create or make current to a context before
// calling glXGetProcAddressARB, unless we dynamically load OpenGL/GLX/X11
glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0;
glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
glXGetProcAddressARB( (const GLubyte *) "glXCreateContextAttribsARB" );
GLXContext ctx = 0;
// Install an X error handler so the application won't exit if GL 3.0
// context allocation fails.
//
// Note this error handler is global. All display connections in all threads
// of a process use the same error handler, so be sure to guard against other
// threads issuing X commands while this code is running.
ctxErrorOccurred = false;
int (*oldHandler)(Display*, XErrorEvent*) =
MyXSetErrorHandler(&ctxErrorHandler);
// Check for the GLX_ARB_create_context extension string and the function.
// If either is not present, use GLX 1.3 context creation method.
if ( !isExtensionSupported( glxExts, "GLX_ARB_create_context" ) ||
!glXCreateContextAttribsARB )
{
printf( "glXCreateContextAttribsARB() not found"
" ... using old-style GLX context\n" );
ctx = glXCreateNewContext( m_data->m_dpy, m_data->m_bestFbc, GLX_RGBA_TYPE, 0, True );
}
// If it does, try to get a GL 3.0 context!
else
{
int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB ,3,
GLX_CONTEXT_MINOR_VERSION_ARB, 2,
GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,None
};
/*
int context_attribs[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 2,
//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
None
};
*/
printf( "Creating context\n" );
ctx = glXCreateContextAttribsARB( m_data->m_dpy, m_data->m_bestFbc, 0,
True, context_attribs );
// Sync to ensure any errors generated are processed.
MyXSync( m_data->m_dpy, False );
if ( !ctxErrorOccurred && ctx )
printf( "Created GL 3.0 context\n" );
else
{
// Couldn't create GL 3.0 context. Fall back to old-style 2.x context.
// When a context version below 3.0 is requested, implementations will
// return the newest context version compatible with OpenGL versions less
// than version 3.0.
// GLX_CONTEXT_MAJOR_VERSION_ARB = 1
context_attribs[1] = 1;
// GLX_CONTEXT_MINOR_VERSION_ARB = 0
context_attribs[3] = 0;
ctxErrorOccurred = false;
printf( "Failed to create GL 3.0 context"
" ... using old-style GLX context\n" );
ctx = glXCreateContextAttribsARB( m_data->m_dpy, m_data->m_bestFbc, 0,
True, context_attribs );
}
}
// Sync to ensure any errors generated are processed.
MyXSync( m_data->m_dpy, False );
// Restore the original error handler
MyXSetErrorHandler( oldHandler );
if ( ctxErrorOccurred || !ctx )
{
fprintf(stderr, "Failed to create an OpenGL context\n" );
exit(1);
}
// Verifying that context is a direct context
if ( ! glXIsDirect ( m_data->m_dpy, ctx ) )
{
printf( "Indirect GLX rendering context obtained\n" );
}
else
{
printf( "Direct GLX rendering context obtained\n" );
}
printf( "Making context current\n" );
glXMakeCurrent( m_data->m_dpy, m_data->m_win, ctx );
m_data->m_glc = ctx;
} else
{
m_data->m_glc = glXCreateContext(m_data->m_dpy, m_data->m_vi, NULL, GL_TRUE);
glXMakeCurrent(m_data->m_dpy, m_data->m_win, m_data->m_glc);
}
#ifdef GLEW_INIT_OPENGL11_FUNCTIONS
{
GLboolean res = glewOpenGL11Init();
if (res==0)
{
printf("glewOpenGL11Init OK!\n");
} else
{
fprintf(stderr, "ERROR: glewOpenGL11Init failed, exiting!\n");
exit(EXIT_FAILURE);
}
}
#endif //GLEW_INIT_OPENGL11_FUNCTIONS
const GLubyte* ven = glGetString(GL_VENDOR);
printf("GL_VENDOR=%s\n", ven);
const GLubyte* ren = glGetString(GL_RENDERER);
printf("GL_RENDERER=%s\n",ren);
const GLubyte* ver = glGetString(GL_VERSION);
printf("GL_VERSION=%s\n", ver);
const GLubyte* sl = glGetString(GL_SHADING_LANGUAGE_VERSION);
printf("GL_SHADING_LANGUAGE_VERSION=%s\n", sl);
//Access pthreads as a workaround for a bug in Linux/Ubuntu
//See https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1248642
int i=pthread_getconcurrency();
printf("pthread_getconcurrency()=%d\n",i);
// const GLubyte* ext = glGetString(GL_EXTENSIONS);
// printf("GL_EXTENSIONS=%s\n", ext);
}
void X11OpenGLWindow::disableOpenGL()
{
glXMakeCurrent(m_data->m_dpy, None, NULL);
glXDestroyContext(m_data->m_dpy, m_data->m_glc);
}
void X11OpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
{
m_data->m_dpy = MyXOpenDisplay(NULL);
m_data->m_glWidth = ci.m_width;
m_data->m_glHeight = ci.m_height;
if(m_data->m_dpy == NULL) {
fprintf(stderr, "\n\tcannot connect to X server\n\n");
exit(EXIT_FAILURE);
}
m_data->m_root = DefaultRootWindow(m_data->m_dpy);
#ifdef GLEW_DYNAMIC_LOAD_ALL_GLX_FUNCTIONS
GLboolean res = glewXInit();
if (res==0)
{
printf("glewXInit OK\n");
} else
{
fprintf(stderr, "glewXInit failed, exit\n");
exit(EXIT_FAILURE);
}
#endif //GLEW_DYNAMIC_LOAD_ALL_GLX_FUNCTIONS
if (ci.m_openglVersion < 3)
{
forceOpenGL3 = false;
}
if (forceOpenGL3)
{
int glxMinor, glxMajor;
if (!glXQueryVersion(m_data->m_dpy,&glxMajor,&glxMinor) || (((glxMajor==1)&&(glxMinor<3)) || (glxMajor<1)))
{
fprintf(stderr, "Invalid GLX version: major %d, minor %d\n",glxMajor,glxMinor);
exit(EXIT_FAILURE);
}
static int visual_attribs[] =
{
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
GLX_RENDER_TYPE , GLX_RGBA_BIT,
GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_ALPHA_SIZE , 8,
GLX_DEPTH_SIZE , 24,
GLX_STENCIL_SIZE , 8,
GLX_DOUBLEBUFFER , True,
None
};
int fbcount;
GLXFBConfig* fbc = glXChooseFBConfig(m_data->m_dpy, DefaultScreen(m_data->m_dpy), visual_attribs, &fbcount);
if (!fbc)
{
fprintf(stderr, "Failed to retrieve a framebuffer config\n" );
exit(1);
}
///don't use highest samples, it is really slow on some NVIDIA Quadro cards
#ifdef USE_HIGHEST_SAMPLES
int best_fbc = -1, worst_fbc = -1, best_num_samp = -1, worst_num_samp = 999;
int i;
for (i=0; i<fbcount; ++i)
{
XVisualInfo *vi = glXGetVisualFromFBConfig( m_data->m_dpy, fbc[i] );
if ( vi )
{
int samp_buf, samples;
glXGetFBConfigAttrib( m_data->m_dpy, fbc[i], GLX_SAMPLE_BUFFERS, &samp_buf );
glXGetFBConfigAttrib( m_data->m_dpy, fbc[i], GLX_SAMPLES , &samples );
//printf( " Matching fbconfig %d, visual ID 0x%2x: SAMPLE_BUFFERS = %d,"
// " SAMPLES = %d\n",
// i, vi -> visualid, samp_buf, samples );
if ( best_fbc < 0 || (samp_buf && (samples > best_num_samp)) )
best_fbc = i, best_num_samp = samples;
if ( worst_fbc < 0 || (!samp_buf || (samples < worst_num_samp)) )
worst_fbc = i, worst_num_samp = samples;
}
MyXFree( vi );
}
m_data->m_bestFbc = fbc[ best_fbc ];
#else
m_data->m_bestFbc = *fbc;
#endif
// Be sure to free the FBConfig list allocated by glXChooseFBConfig()
MyXFree( fbc );
m_data->m_vi = glXGetVisualFromFBConfig( m_data->m_dpy, m_data->m_bestFbc );
m_data->m_swa.colormap = m_data->m_cmap = MyXCreateColormap( m_data->m_dpy,
RootWindow( m_data->m_dpy, m_data->m_vi->screen ),
m_data->m_vi->visual, AllocNone );
m_data->m_swa.background_pixmap = None ;
m_data->m_swa.border_pixel = 0;
m_data->m_swa.event_mask = ExposureMask | KeyReleaseMask | KeyPressMask |ButtonPressMask | ButtonReleaseMask |PointerMotionMask|StructureNotifyMask;
;
m_data->m_root = RootWindow( m_data->m_dpy, m_data->m_vi->screen );
m_data->m_win = MyXCreateWindow( m_data->m_dpy, m_data->m_root,
0, 0, ci.m_width, ci.m_height, 0, m_data->m_vi->depth, InputOutput,
m_data->m_vi->visual,
CWBorderPixel|CWColormap|CWEventMask, &m_data->m_swa );
//m_data->m_win = m_data->m_x11_XCreateWindow(m_data->m_dpy, m_data->m_root, 0, 0, ci.m_width, ci.m_height, 0, m_data->m_vi->depth, InputOutput, m_data->m_vi->visual, CWColormap | CWEventMask, &m_data->m_swa);
if (!m_data->m_win)
{
fprintf(stderr, "Cannot create window\n");
exit(EXIT_FAILURE);
}
MyXMapWindow(m_data->m_dpy, m_data->m_win);
MyXStoreName(m_data->m_dpy, m_data->m_win, "OpenGL3 Window");
} else
{
m_data->m_vi = glXChooseVisual(m_data->m_dpy, 0, att);
printf("4\n");
if(m_data->m_vi == NULL) {
fprintf(stderr, "\n\tno appropriate visual found\n\n");
exit(EXIT_FAILURE);
}
else {
printf("\n\tvisual %p selected\n", (void *)m_data->m_vi->visualid); /* %p creates hexadecimal output like in glxinfo */
}
m_data->m_cmap = MyXCreateColormap(m_data->m_dpy, m_data->m_root, m_data->m_vi->visual, AllocNone);
m_data->m_swa.colormap = m_data->m_cmap;
m_data->m_swa.event_mask = ExposureMask | KeyReleaseMask | KeyPressMask |ButtonPressMask | ButtonReleaseMask |PointerMotionMask|StructureNotifyMask;
m_data->m_win = MyXCreateWindow(m_data->m_dpy, m_data->m_root, 0, 0, ci.m_width, ci.m_height, 0, m_data->m_vi->depth, InputOutput, m_data->m_vi->visual, CWColormap | CWEventMask, &m_data->m_swa);
MyXMapWindow(m_data->m_dpy, m_data->m_win);
MyXStoreName(m_data->m_dpy, m_data->m_win, "OpenGL2 Window");
}
enableOpenGL();
}
void X11OpenGLWindow::closeWindow()
{
disableOpenGL();
MyXDestroyWindow(m_data->m_dpy, m_data->m_win);
MyXCloseDisplay(m_data->m_dpy);
}
int X11OpenGLWindow::getAsciiCodeFromVirtualKeycode(int keycode)
{
int result = 0;
KeySym key, key_lc, key_uc;
int keysyms_per_keycode_return;
KeySym *keysym = MyXGetKeyboardMapping(m_data->m_dpy,
keycode,
1,
&keysyms_per_keycode_return);
key = keysym[0];
//key = MyXKeycodeToKeysym( m_data->m_dpy, keycode, 0 );
switch( key )
{
case XK_Escape: return B3G_ESCAPE;
case XK_Return: return B3G_RETURN;
case XK_Control_L:
case XK_Control_R: {
return B3G_CONTROL;
}
case XK_Left: return B3G_LEFT_ARROW;
case XK_Right: return B3G_RIGHT_ARROW;
case XK_Up: return B3G_UP_ARROW;
case XK_Down: return B3G_DOWN_ARROW;
case XK_Alt_L:
case XK_Alt_R:
{
return B3G_ALT;
}
case XK_Shift_L:
case XK_Shift_R: return B3G_SHIFT;
case XK_F1: return B3G_F1;
case XK_F2: return B3G_F2;
case XK_F3: return B3G_F3;
case XK_F4: return B3G_F4;
case XK_F5: return B3G_F5;
case XK_F6: return B3G_F6;
case XK_F7: return B3G_F7;
case XK_F8: return B3G_F8;
case XK_F9: return B3G_F9;
case XK_F10: return B3G_F10;
case XK_F11: return B3G_F11;
case XK_F12: return B3G_F12;
case XK_F13: return B3G_F13;
case XK_F14: return B3G_F14;
case XK_F15: return B3G_F15;
default:
// Make lowercase
MyXConvertCase( key, &key_lc, &key_uc );
key = key_lc;
// Valid ISO 8859-1 character?
if( (key >= 32 && key <= 126) ||(key >= 160 && key <= 255) )
{
return (int) key;
}
result = -1;
}
MyXFree(keysym);
return result;
}
bool X11OpenGLWindow::isModifierKeyPressed(int key)
{
bool isPressed = false;
switch (key)
{
case B3G_ALT:
{
isPressed = ((m_data->m_modifierFlags & MY_X11_ALT_KEY)!=0);
break;
};
case B3G_SHIFT:
{
isPressed = ((m_data->m_modifierFlags & MY_X11_SHIFT_KEY)!=0);
break;
};
case B3G_CONTROL:
{
isPressed = ((m_data->m_modifierFlags & MY_X11_CONTROL_KEY )!=0);
break;
};
default:
{
}
};
return isPressed;
}
void X11OpenGLWindow::pumpMessage()
{
int buttonState = 1;
// Process all pending events
while( MyXPending( m_data->m_dpy ) )
{
MyXNextEvent(m_data->m_dpy, &m_data->m_xev);
// printf("#");
// fflush(stdout);
switch( m_data->m_xev.type )
{
case KeyPress:
{
int keycode = getAsciiCodeFromVirtualKeycode(m_data->m_xev.xkey.keycode);
switch (keycode)
{
case B3G_ALT:
m_data->m_modifierFlags |= MY_X11_ALT_KEY;
break;
case B3G_SHIFT:
m_data->m_modifierFlags |= MY_X11_SHIFT_KEY;
break;
case B3G_CONTROL:
m_data->m_modifierFlags |= MY_X11_CONTROL_KEY;
break;
default:
{}
};
if (m_data->m_keyboardCallback)
{
int state = 1;
(*m_data->m_keyboardCallback)(keycode,state);
// printf("keycode %d",keycode);
// fflush(stdout);
}
break;
}
case KeyRelease:
{
// fflush(stdout);
int keycode = getAsciiCodeFromVirtualKeycode( m_data->m_xev.xkey.keycode);
switch (keycode)
{
case B3G_ALT:
m_data->m_modifierFlags &= ~MY_X11_ALT_KEY;
break;
case B3G_SHIFT:
m_data->m_modifierFlags &= ~MY_X11_SHIFT_KEY;
break;
case B3G_CONTROL:
m_data->m_modifierFlags &= ~MY_X11_CONTROL_KEY;
break;
default:
{}
};
if (m_data->m_keyboardCallback)
{
#if 1
unsigned short is_retriggered = 0;
///filter out keyboard repeat
//see http://stackoverflow.com/questions/2100654/ignore-auto-repeat-in-x11-applications
if (MyXEventsQueued(m_data->m_dpy, QueuedAfterReading))
{
XEvent nev;
MyXPeekEvent(m_data->m_dpy, &nev);
if (nev.type == KeyPress && nev.xkey.time == m_data->m_xev.xkey.time &&
nev.xkey.keycode == m_data->m_xev.xkey.keycode)
{
//fprintf (stdout, "key #%ld was retriggered.\n",
// (long) MyXLookupKeysym(&nev.xkey, 0));
// delete retriggered KeyPress event
MyXNextEvent(m_data->m_dpy, & m_data->m_xev);
is_retriggered = 1;
}
}
#endif
int state = 0;
if (!is_retriggered)
(*m_data->m_keyboardCallback)(keycode,state);
}
break;
}
case ButtonRelease:
buttonState = 0;
//continue with ButtonPress code
case ButtonPress:
{
// printf("!");
// fflush(stdout);
int button=-1;
switch (m_data->m_xev.xbutton.button)
{
case Button1:
{
button=0;
break;
}
case Button2:
{
button=1;
break;
}
case Button3:
{
button=2;
break;
}
case Button4:
{
if (m_data->m_wheelCallback)
{
(*m_data->m_wheelCallback)(0,10);
}
break;
}
case Button5:
{
if (m_data->m_wheelCallback)
{
(*m_data->m_wheelCallback)(0,-10);
}
break;
}
}
int xpos = m_data->m_xev.xmotion.x;
int ypos = m_data->m_xev.xmotion.y;
if (button>=0 && m_data->m_mouseButtonCallback)
{
// printf("xpos = %d, ypos = %d\n",xpos,ypos);
(*m_data->m_mouseButtonCallback)(button,buttonState,xpos,ypos);
}
break;
}
case MotionNotify:
{
// printf("!");
// fflush(0);
if (m_data->m_mouseMoveCallback)
{
int xpos = m_data->m_xev.xmotion.x;
int ypos = m_data->m_xev.xmotion.y;
(*m_data->m_mouseMoveCallback)(xpos,ypos);
}
break;
}
case ConfigureNotify:
{
// printf("@");
// fflush(0);
m_data->m_glWidth = m_data->m_xev.xconfigure.width;
m_data->m_glHeight = m_data->m_xev.xconfigure.height;
if (m_data->m_resizeCallback)
{
(*m_data->m_resizeCallback)(m_data->m_xev.xconfigure.width,m_data->m_xev.xconfigure.height);
}
break;
}
case ClientMessage:
{
// printf("?");
// fflush(stdout);
break;
}
case Expose:
{
break;
}
case DestroyNotify:
{
break;
}
default:
{
//XRRUpdateConfiguration( &event );
}
};
}
}
void X11OpenGLWindow::startRendering()
{
pumpMessage();
MyXGetWindowAttributes(m_data->m_dpy, m_data->m_win, &m_data->m_gwa);
glViewport(0, 0, m_data->m_gwa.width, m_data->m_gwa.height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); //clear buffers
//glCullFace(GL_BACK);
//glFrontFace(GL_CCW);
glEnable(GL_DEPTH_TEST);
}
void X11OpenGLWindow::renderAllObjects()
{
}
void X11OpenGLWindow::endRendering()
{
glXSwapBuffers(m_data->m_dpy, m_data->m_win);
}
void X11OpenGLWindow::runMainLoop()
{
}
float X11OpenGLWindow::getTimeInSeconds()
{
return 0.f;
}
bool X11OpenGLWindow::requestedExit() const
{
return m_requestedExit;
}
void X11OpenGLWindow::setRequestExit()
{
m_requestedExit=true;
}
void X11OpenGLWindow::setRenderCallback( b3RenderCallback renderCallback)
{
}
void X11OpenGLWindow::setWindowTitle(const char* title)
{
MyXStoreName(m_data->m_dpy, m_data->m_win, title);
}
void X11OpenGLWindow::setWheelCallback(b3WheelCallback wheelCallback)
{
m_data->m_wheelCallback = wheelCallback;
}
void X11OpenGLWindow::setMouseMoveCallback(b3MouseMoveCallback mouseCallback)
{
m_data->m_mouseMoveCallback = mouseCallback;
}
void X11OpenGLWindow::setMouseButtonCallback(b3MouseButtonCallback mouseCallback)
{
m_data->m_mouseButtonCallback = mouseCallback;
}
void X11OpenGLWindow::setResizeCallback(b3ResizeCallback resizeCallback)
{
if (resizeCallback && m_data->m_glWidth>0 && m_data->m_glHeight > 0)
{
resizeCallback(m_data->m_glWidth, m_data->m_glHeight);
}
m_data->m_resizeCallback = resizeCallback;
}
void X11OpenGLWindow::setKeyboardCallback( b3KeyboardCallback keyboardCallback)
{
m_data->m_keyboardCallback = keyboardCallback;
}
b3MouseMoveCallback X11OpenGLWindow::getMouseMoveCallback()
{
return m_data->m_mouseMoveCallback;
}
b3MouseButtonCallback X11OpenGLWindow::getMouseButtonCallback()
{
return m_data->m_mouseButtonCallback;
}
b3ResizeCallback X11OpenGLWindow::getResizeCallback()
{
return m_data->m_resizeCallback;
}
b3WheelCallback X11OpenGLWindow::getWheelCallback()
{
return m_data->m_wheelCallback;
}
b3KeyboardCallback X11OpenGLWindow::getKeyboardCallback()
{
return m_data->m_keyboardCallback;
}
int X11OpenGLWindow::getWidth() const
{
if (m_data)
return m_data->m_glWidth;
return 0;
}
int X11OpenGLWindow::getHeight() const
{
if (m_data)
return m_data->m_glHeight;
return 0;
}
#include <stdio.h>
int X11OpenGLWindow::fileOpenDialog(char* filename, int maxNameLength)
{
int len = 0;
FILE * output = popen("zenity --file-selection --file-filter=\"*.urdf\" --file-filter=\"*.sdf\" --file-filter=\"*.obj\" --file-filter=\"*.*\"","r");
if (output)
{
while( fgets(filename, maxNameLength-1, output) != NULL )
{
len=strlen(filename);
if (len>0)
{
filename[len-1]=0;
printf("file open (length=%d) = %s\n", len,filename);
}
}
pclose(output);
} else
{
printf("Error: fileOpenDialog no popen output, perhaps install zenity?\n");
}
MyXRaiseWindow(m_data->m_dpy, m_data->m_win);
return len;
}
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