//-------------------------------------------------------------------------------------------------//
void GLXWindow::setVSyncEnabled(bool vsync)
{
mVSync = vsync;
// we need to make our context current to set vsync
// store previous context to restore when finished.
::GLXDrawable oldDrawable = glXGetCurrentDrawable();
::GLXContext oldContext = glXGetCurrentContext();
mContext->setCurrent();
if (! mIsExternalGLControl)
{
if (GLXEW_MESA_swap_control)
glXSwapIntervalMESA (vsync ? mVSyncInterval : 0);
else if (GLXEW_EXT_swap_control)
glXSwapIntervalEXT (mGLSupport->getGLDisplay(), glXGetCurrentDrawable(),
vsync ? mVSyncInterval : 0);
else if (GLXEW_SGI_swap_control)
if (vsync && mVSyncInterval)
glXSwapIntervalSGI (mVSyncInterval);
}
mContext->endCurrent();
glXMakeCurrent (mGLSupport->getGLDisplay(), oldDrawable, oldContext);
}
void CL_OpenGLWindowProvider_GLX::create(CL_DisplayWindowSite *new_site, const CL_DisplayWindowDescription &desc)
{
site = new_site;
bool create_provider_flag = false;
Display *disp = x11_window.get_display();
if (!opengl_context)
{
// FBConfigs were added in GLX version 1.3.
int glx_major, glx_minor;
if ( !glx.glXQueryVersion( disp, &glx_major, &glx_minor ) ||
( ( glx_major == 1 ) && ( glx_minor < 3 ) ) || ( glx_major < 1 ) )
{
glx_1_3 = false;
}
else
{
glx_1_3 = true;
}
create_provider_flag = true;
if (glx_1_3)
{
create_glx_1_3(new_site, desc, disp);
}
else
{
create_glx_1_2(new_site, desc, disp);
}
if (!glx.glXIsDirect(disp, opengl_context))
printf("No hardware acceleration available. I hope you got a really fast machine.\n");
}
x11_window.create(opengl_visual_info, site, desc);
if (create_provider_flag)
{
CL_OpenGLWindowDescription gldesc(desc);
gc = CL_GraphicContext(new CL_OpenGLGraphicContextProvider(new CL_GL_RenderWindowProvider_GLX(*this, opengl_context, false), gldesc));
std::vector<CL_GraphicContextProvider*> &gc_providers = CL_SharedGCData::get_gc_providers();
gc_providers.push_back(gc.get_provider());
}
setup_swap_interval_pointers();
swap_interval = desc.get_swap_interval();
if (swap_interval != -1)
{
if (glXSwapIntervalSGI)
{
glXSwapIntervalSGI(swap_interval);
}
else if (glXSwapIntervalMESA)
{
glXSwapIntervalMESA(swap_interval);
}
}
}
void cInterfaceGLX::SwapInterval(int Interval)
{
if (glXSwapIntervalSGI)
glXSwapIntervalSGI(Interval);
else
ERROR_LOG(VIDEO, "No support for SwapInterval (framerate clamped to monitor refresh rate).");
}
EXTERN_C_ENTER
JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_GLXSGISwapControl_nglXSwapIntervalSGI(JNIEnv *__env, jclass clazz, jint interval, jlong __functionAddress) {
glXSwapIntervalSGIPROC glXSwapIntervalSGI = (glXSwapIntervalSGIPROC)(intptr_t)__functionAddress;
UNUSED_PARAMS(__env, clazz)
return (jint)glXSwapIntervalSGI(interval);
}
// Initialize GL
//*****************************************************************************
void InitGL(int* argc, char **argv)
{
// initialize GLUT
glutInit(argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowPosition (glutGet(GLUT_SCREEN_WIDTH)/2 - iGraphicsWinWidth/2,
glutGet(GLUT_SCREEN_HEIGHT)/2 - iGraphicsWinHeight/2);
glutInitWindowSize(iGraphicsWinWidth, iGraphicsWinHeight);
iGLUTWindowHandle = glutCreateWindow("OpenCL for GPU RGB Sobel Filter Demo");
#if !(defined (__APPLE__) || defined(MACOSX))
glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
#endif
// register glut callbacks
glutKeyboardFunc(KeyboardGL);
glutDisplayFunc(DisplayGL);
glutReshapeFunc(Reshape);
glutIdleFunc(Idle);
glutTimerFunc(REFRESH_DELAY, timerEvent,0);
// create GLUT menu
iGLUTMenuHandle = glutCreateMenu(MenuGL);
glutAddMenuEntry("Toggle Filter On/Off <spacebar>", ' ');
glutAddMenuEntry("Toggle Processing between GPU and CPU [p]", 'p');
glutAddMenuEntry("Toggle between Full Screen and Windowed [f]", 'f');
glutAddMenuEntry("Increase Threshold [+]", '+');
glutAddMenuEntry("Decrease Threshold [-]", '-');
glutAddMenuEntry("Quit <esc>", '\033');
glutAttachMenu(GLUT_RIGHT_BUTTON);
// Set clear color
glClearColor(0.f, 0.f, 0.f, 0.f);
// Zoom with fixed aspect ratio
float fAspects[2] = {(float)glutGet(GLUT_WINDOW_WIDTH)/(float)uiImageWidth , (float)glutGet(GLUT_WINDOW_HEIGHT)/(float)uiImageHeight};
fZoom = fAspects[0] > fAspects[1] ? fAspects[1] : fAspects[0];
glPixelZoom(fZoom, fZoom);
glewInit();
// Disable vertical sync, if supported
#ifdef _WIN32
if (wglewIsSupported("WGL_EXT_swap_control"))
{
iVsyncState = wglGetSwapIntervalEXT();
wglSwapIntervalEXT(0);
}
#else
#if defined (__APPLE__) || defined(MACOSX)
GLint VBL = 0;
CGLGetParameter(CGLGetCurrentContext(), kCGLCPSwapInterval, &iVsyncState);
CGLSetParameter(CGLGetCurrentContext(), kCGLCPSwapInterval, &VBL);
#else
if(glxewIsSupported("GLX_SGI_swap_control"))
{
glXSwapIntervalSGI(0);
}
#endif
#endif
}
void QGLBlitter::SubWidget::initializeGL() {
// void *libHandle = dlopen("libgl.so", RTLD_LAZY);
// glXGetVideoSyncSGI_ptr = (glXGetVideoSyncSGI_Func) dlsym(libHandle, "glXGetVideoSyncSGI");
// glXWaitVideoSyncSGI_ptr = (glXWaitVideoSyncSGI_Func) dlsym(libHandle, "glXWaitVideoSyncSGI");
glEnable(GL_CULL_FACE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, bf ? GL_LINEAR : GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, bf ? GL_LINEAR : GL_NEAREST);
glShadeModel(GL_FLAT);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DITHER);
#ifdef PLATFORM_UNIX
if (swapInterval) {
static void (*const glXSwapIntervalSGI)(int) = reinterpret_cast<void (*)(int)>(x11GetProcAddress("glXSwapIntervalSGI"));
if (glXSwapIntervalSGI) {
glXSwapIntervalSGI(swapInterval);
} else
swapInterval = 0;
}
#endif
initialized = true;
}
extern void device_present(gs_device_t *device)
{
static bool initialized = false;
static enum swap_type swap_type = SWAP_TYPE_NORMAL;
Display *display = device->plat->display;
XID window = device->cur_swap->wi->window;
if (!initialized) {
if (GLAD_GLX_EXT_swap_control)
swap_type = SWAP_TYPE_EXT;
else if (GLAD_GLX_MESA_swap_control)
swap_type = SWAP_TYPE_MESA;
else if (GLAD_GLX_SGI_swap_control)
swap_type = SWAP_TYPE_SGI;
initialized = true;
}
/* TODO: Handle XCB events. */
switch (swap_type) {
case SWAP_TYPE_EXT: glXSwapIntervalEXT(display, window, 0); break;
case SWAP_TYPE_MESA: glXSwapIntervalMESA(0); break;
case SWAP_TYPE_SGI: glXSwapIntervalSGI(0); break;
case SWAP_TYPE_NORMAL:;
}
glXSwapBuffers(display, window);
}
static int xdpy_swap_control(ALLEGRO_DISPLAY *display, int vsync_setting)
{
/* We set the swap interval to 0 if vsync is forced off, and to 1
* if it is forced on.
* http://www.opengl.org/registry/specs/SGI/swap_control.txt
* If the option is set to 0, we simply use the system default. The
* above extension specifies vsync on as default though, so in the
* end with GLX we can't force vsync on, just off.
*/
ALLEGRO_DEBUG("requested vsync=%d.\n", vsync_setting);
if (vsync_setting) {
if (display->ogl_extras->extension_list->ALLEGRO_GLX_SGI_swap_control) {
int x = (vsync_setting == 2) ? 0 : 1;
if (glXSwapIntervalSGI(x)) {
ALLEGRO_WARN("glXSwapIntervalSGI(%d) failed.\n", x);
}
}
else {
ALLEGRO_WARN("no vsync, GLX_SGI_swap_control missing.\n");
/* According to the specification that means it's on, but
* the driver might have disabled it. So we do not know.
*/
vsync_setting = 0;
}
}
return vsync_setting;
}
void iface::set_vsync_interval(int interval)
{
typedef void (*glXSwapIntervalEXT_fun)(Display*,GLXDrawable,int);
typedef int(*glXSwapIntervalSGI_fun)(int);
glXSwapIntervalEXT_fun glXSwapIntervalEXT = (glXSwapIntervalEXT_fun)glXGetProcAddress((GLubyte const*)"glXSwapIntervalEXT");
if (glXSwapIntervalEXT)
{
glXSwapIntervalEXT(gui::g_display, window_, interval);
return;
}
glXSwapIntervalSGI_fun glXSwapIntervalMESA = (glXSwapIntervalSGI_fun)glXGetProcAddress((GLubyte const*)"glXSwapIntervalMESA");
if (glXSwapIntervalMESA)
{
glXSwapIntervalMESA(interval);
return;
}
glXSwapIntervalSGI_fun glXSwapIntervalSGI = (glXSwapIntervalSGI_fun)glXGetProcAddress((GLubyte const*)"glXSwapIntervalSGI");
if (glXSwapIntervalSGI)
{
glXSwapIntervalSGI(interval);
return;
}
}
//--------------------------------------
void ofSetVerticalSync(bool bSync){
//----------------------------
#ifdef TARGET_WIN32
//----------------------------
if (bSync) {
if (GLEE_WGL_EXT_swap_control) wglSwapIntervalEXT (1);
} else {
if (GLEE_WGL_EXT_swap_control) wglSwapIntervalEXT (0);
}
//----------------------------
#endif
//----------------------------
//--------------------------------------
#ifdef TARGET_OSX
//--------------------------------------
GLint sync = bSync == true ? 1 : 0;
CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &sync);
//--------------------------------------
#endif
//--------------------------------------
//--------------------------------------
#ifdef TARGET_LINUX
//--------------------------------------
if (GLEE_GLX_SGI_swap_control) glXSwapIntervalSGI(bSync ? 1 : 0);
//--------------------------------------
#endif
//--------------------------------------
}
void GLXEnableVSync(Display* disp, GLXWindow drawable) {
if (GLXEW_EXT_swap_control)
glXSwapIntervalEXT(disp, drawable, 1);
else if (GLXEW_MESA_swap_control)
glXSwapIntervalMESA(1);
else if (GLXEW_SGI_swap_control)
glXSwapIntervalSGI(1);
}
boolean BaseOSDevice::setSyncInterval(uint synk)
{
if(glXSwapIntervalSGI){
glXSwapIntervalSGI(synk);
return true;
}
return false;
}
bool LinuxGLContext::SetSwapInterval(int interval)
{
/* Load GL extension "glXSwapIntervalSGI" to set v-sync interval */
if (glXSwapIntervalSGI || LoadSwapIntervalProcs())
return (glXSwapIntervalSGI(interval) == 0);
else
return false;
}
void GlxBackend::setSwapInterval(int interval)
{
if (glXSwapIntervalEXT)
glXSwapIntervalEXT(display(), glxWindow, interval);
else if (glXSwapIntervalMESA)
glXSwapIntervalMESA(interval);
else if (glXSwapIntervalSGI)
glXSwapIntervalSGI(interval);
}
void GlxBackend::setSwapInterval(int interval)
{
if (m_haveEXTSwapControl)
glXSwapIntervalEXT(display(), glxWindow, interval);
else if (m_haveMESASwapControl)
glXSwapIntervalMESA(interval);
else if (m_haveSGISwapControl)
glXSwapIntervalSGI(interval);
}
void toggle_vsync( bool use_vsync )
{
#ifdef WIN32
initWin32Vsync();
wglSwapIntervalEXT( use_vsync );
#endif
#if defined(__LINUX__) || defined(__LINUX)|| defined(__linux__)
glXSwapIntervalSGI( use_vsync );
#endif
return ;
}
void Window::_initSwapSync()
{
if( GLXEW_SGI_swap_control )
{
// set vsync on/off
const GLint vsync =
( getIAttribute( eq::Window::IATTR_HINT_SWAPSYNC )==OFF ) ? 0 : 1;
glXSwapIntervalSGI( vsync );
}
else
EQWARN << "GLX_SGI_swap_control not supported, ignoring window "
<< "swapsync hint" << std::endl;
}
void WindowData::SetVSync(bool sync)
{
const char *glx_extentions = glXQueryExtensionsString(GetDisplay(), DefaultScreen(GetDisplay()));
if (!glXSwapIntervalSGI)
{
glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC) glXGetProcAddressARB( (const GLubyte *) "glXSwapIntervalSGI");
}
if (IsExtensionSupported(glx_extentions, "GLX_SGI_swap_control") && glXSwapIntervalSGI)
{
glXSwapIntervalSGI(sync ? 1 : 0);
}
}
void MaxGLCanvas::SetSwapInterval(int sync) {
#ifdef __WXMAC__
// WXGLContext context = WXGLGetCurrentContext();
// aglSetInteger(context, AGL_SWAP_INTERVAL, &sync);
#elif __WXMSW__
WGLSWAPINTERVALEXT wglSwapIntervalEXT=(WGLSWAPINTERVALEXT)wglGetProcAddress("wglSwapIntervalEXT");
if( wglSwapIntervalEXT ) wglSwapIntervalEXT( sync );
#elif __WXGTK__
typedef int (*GLXSWAPINTERVALEXT)(int);
GLXSWAPINTERVALEXT glXSwapIntervalSGI=(GLXSWAPINTERVALEXT)glXGetProcAddress((const GLubyte*)"glXSwapIntervalSGI");
if ( glXSwapIntervalSGI ) {
glXSwapIntervalSGI ( sync );
}
#endif
}
void Window::_initSwapSync()
{
if( getIAttribute( IATTR_HINT_DRAWABLE ) != WINDOW )
return;
const int32_t swapSync = getIAttribute(WindowSettings::IATTR_HINT_SWAPSYNC);
if( swapSync == AUTO || swapSync == UNDEFINED ) // leave it alone
return;
if( GLXEW_SGI_swap_control )
glXSwapIntervalSGI( (swapSync < 0) ? 1 : swapSync );
else
LBWARN << "GLX_SGI_swap_control not supported, ignoring window "
<< "swapsync hint " << IAttribute( swapSync ) << std::endl;
}
void CL_DisplayWindow_OpenGL::flip(int interval)
{
CL_GLStateChecker::from_gc(get_gc())->flush();
if (interval != -1)
{
typedef int (*ptr_glXSwapIntervalSGI)(int interval);
ptr_glXSwapIntervalSGI glXSwapIntervalSGI = (ptr_glXSwapIntervalSGI) CL_OpenGL::get_proc_address("glXSwapIntervalSGI");
if (glXSwapIntervalSGI)
{
glXSwapIntervalSGI(interval);
}
}
XSync(disp,False);
glXSwapBuffers(disp, window);
}
void zl_glx_vsync(zl_glx *x, bool sync) {
#ifdef TARGET_WIN32
if (sync) {
if (GLEE_WGL_EXT_swap_control) wglSwapIntervalEXT (1);
} else {
if (GLEE_WGL_EXT_swap_control) wglSwapIntervalEXT (0);
}
#endif
#ifdef TARGET_OSX
long sync = sync ? 1 : 0;
CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &sync);
#endif
#ifdef TARGET_LINUX
int interval = sync ? 2 : 0;
glXSwapIntervalSGIFunc glXSwapIntervalSGI = 0;
glXSwapIntervalMESAFunc glXSwapIntervalMESA = 0;
if (GLXExtensionSupported(x->xdpy->dpy, "GLX_MESA_swap_control")) {
glXSwapIntervalMESA = (glXSwapIntervalMESAFunc)
glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalMESA");
if (glXSwapIntervalMESA) {
ZL_LOG("glXSwapIntervalMESA(%d)", interval);
glXSwapIntervalMESA (interval);
}
else {
ZL_LOG("Could not get glXSwapIntervalMESA()\n");
}
}
else if (GLXExtensionSupported(x->xdpy->dpy, "GLX_SGI_swap_control")) {
glXSwapIntervalSGI = (glXSwapIntervalSGIFunc)
glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalSGI");
if (glXSwapIntervalSGI) {
ZL_LOG("glXSwapIntervalSGI(%d)", interval, glXSwapIntervalSGI);
glXSwapIntervalSGI (interval);
}
else {
ZL_LOG("Could not get glXSwapIntervalSGI()\n");
}
}
else {
ZL_LOG("can't change vblank settings");
}
#endif
}
void CL_OpenGLWindowProvider_GLX::flip(int interval)
{
CL_GraphicContext gc = get_gc();
CL_OpenGL::set_active(gc);
glFlush();
if (interval != -1 && interval != swap_interval)
{
swap_interval = interval;
if (glXSwapIntervalSGI)
{
glXSwapIntervalSGI(swap_interval);
}
else if (glXSwapIntervalMESA)
{
glXSwapIntervalMESA(swap_interval);
}
}
glx.glXSwapBuffers(x11_window.get_display(), x11_window.get_window());
}
void GlxContext::setVerticalSyncEnabled(bool enabled)
{
// Make sure that extensions are initialized
ensureExtensionsInit(m_display, DefaultScreen(m_display));
int result = 0;
// Prioritize the EXT variant and fall back to MESA or SGI if needed
// We use the direct pointer to the MESA entry point instead of the alias
// because glx.h declares the entry point as an external function
// which would require us to link in an additional library
if (sfglx_ext_EXT_swap_control == sfglx_LOAD_SUCCEEDED)
{
glXSwapIntervalEXT(m_display, m_pbuffer ? m_pbuffer : m_window, enabled ? 1 : 0);
}
else if (sfglx_ext_MESA_swap_control == sfglx_LOAD_SUCCEEDED)
{
result = sf_ptrc_glXSwapIntervalMESA(enabled ? 1 : 0);
}
else if (sfglx_ext_SGI_swap_control == sfglx_LOAD_SUCCEEDED)
{
result = glXSwapIntervalSGI(enabled ? 1 : 0);
}
else
{
static bool warned = false;
if (!warned)
{
err() << "Setting vertical sync not supported" << std::endl;
warned = true;
}
}
if (result != 0)
err() << "Setting vertical sync failed" << std::endl;
}
// Setup function for GLUT parameters and loop
//*****************************************************************************
void InitGL(int* argc, char **argv)
{
// init GLUT
glutInit(argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
glutInitWindowPosition (glutGet(GLUT_SCREEN_WIDTH)/2 - iGraphicsWinWidth/2,
glutGet(GLUT_SCREEN_HEIGHT)/2 - iGraphicsWinHeight/2);
glutInitWindowSize(iGraphicsWinWidth, iGraphicsWinHeight);
iGLUTWindowHandle = glutCreateWindow("OpenCL for GPU Nbody Demo");
#if !(defined (__APPLE__) || defined(MACOSX) || defined(__EMSCRIPTEN__))
glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
#endif
// init GLEW
#ifndef __EMSCRIPTEN__
glewInit();
GLboolean bGlew = glewIsSupported("GL_VERSION_2_0 "
"GL_VERSION_1_5 "
"GL_ARB_multitexture "
"GL_ARB_vertex_buffer_object");
oclCheckErrorEX(bGlew, shrTRUE, pCleanup);
#endif
glEnable(GL_DEPTH_TEST);
glClearColor(0.0, 0.0, 0.0, 1.0);
renderer = new ParticleRenderer();
// check GL errors
GLenum error;
while ((error = glGetError()) != GL_NO_ERROR)
{
#ifdef __EMSCRIPTEN__
shrLog("InitGL: error - %d\n", error);
#else
shrLog("InitGL: error - %s\n", (char *)gluErrorString(error));
#endif
}
// Disable vertical sync, if supported
#ifdef _WIN32
if (wglewIsSupported("WGL_EXT_swap_control"))
{
iVsyncState = wglGetSwapIntervalEXT();
wglSwapIntervalEXT(0);
}
#else
#if defined (__APPLE__) || defined(MACOSX)
GLint VBL = 0;
CGLGetParameter(CGLGetCurrentContext(), kCGLCPSwapInterval, &iVsyncState);
CGLSetParameter(CGLGetCurrentContext(), kCGLCPSwapInterval, &VBL);
#elif __EMSCRIPTEN__
#else
if(glxewIsSupported("GLX_SGI_swap_control"))
{
glXSwapIntervalSGI(0);
}
#endif
#endif
// create a new parameter list
paramlist = new ParamListGL("sliders");
paramlist->bar_col_outer[0] = 0.8f;
paramlist->bar_col_outer[1] = 0.8f;
paramlist->bar_col_outer[2] = 0.0f;
paramlist->bar_col_inner[0] = 0.8f;
paramlist->bar_col_inner[1] = 0.8f;
paramlist->bar_col_inner[2] = 0.0f;
// add parameters to the list
// Point Size
paramlist->AddParam(new Param<float>("Point Size", activeParams.m_pointSize,
0.0f, 10.0f, 0.01f, &activeParams.m_pointSize));
// Velocity Damping
paramlist->AddParam(new Param<float>("Velocity Damping", activeParams.m_damping,
0.5f, 1.0f, .0001f, &(activeParams.m_damping)));
// Softening Factor
paramlist->AddParam(new Param<float>("Softening Factor", activeParams.m_softening,
0.001f, 1.0f, .0001f, &(activeParams.m_softening)));
// Time step size
paramlist->AddParam(new Param<float>("Time Step", activeParams.m_timestep,
0.0f, 1.0f, .0001f, &(activeParams.m_timestep)));
// Cluster scale (only affects starting configuration
paramlist->AddParam(new Param<float>("Cluster Scale", activeParams.m_clusterScale,
0.0f, 10.0f, 0.01f, &(activeParams.m_clusterScale)));
// Velocity scale (only affects starting configuration)
paramlist->AddParam(new Param<float>("Velocity Scale", activeParams.m_velocityScale,
0.0f, 1000.0f, 0.1f, &activeParams.m_velocityScale));
}
void geWaitVsync(int enabled){
void (*glXSwapIntervalSGI)(int) = (void(*)(int))glXGetProcAddressARB((GLubyte*)"glXSwapIntervalSGI");
if(glXSwapIntervalSGI){
glXSwapIntervalSGI(enabled);
}
}
void
schro_opengl_draw_texture (SchroOpenGL * display, GLuint texture,
int width, int height, int sync)
{
//g_return_if_fail (width > 0);
//g_return_if_fail (height > 0);
//g_return_if_fail (texture != None);
schro_opengl_lock (display);
//g_assert (display->window != None);
//g_assert (display->context != NULL);
//schro_opengl_update_attributes (display);
#if 0
/* Doesn't work */
{
int64_t ust = 1234;
int64_t mst = 1234;
int64_t sbc = 1234;
int ret;
ret = glXGetSyncValuesOML (display->display, display->window,
&ust, &mst, &sbc);
SCHRO_ERROR ("sync values %d %lld %lld %lld", ret, ust, mst, sbc);
}
#endif
if (sync) {
glXSwapIntervalSGI (1);
} else {
glXSwapIntervalSGI (0);
}
glViewport (0, 0, display->win_width, display->win_height);
glClearColor (0.3, 0.3, 0.3, 1.0);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
glDisable (GL_CULL_FACE);
glEnableClientState (GL_TEXTURE_COORD_ARRAY);
glColor4f (1, 1, 1, 1);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glColor4f (1, 0, 1, 1);
schro_opengl_check_error (display, __LINE__);
glBegin (GL_QUADS);
glNormal3f (0, 0, -1);
glTexCoord2f (width, 0);
glVertex3f (1.0, 1.0, 0);
glTexCoord2f (0, 0);
glVertex3f (-1.0, 1.0, 0);
glTexCoord2f (0, height);
glVertex3f (-1.0, -1.0, 0);
glTexCoord2f (width, height);
glVertex3f (1.0, -1.0, 0);
glEnd ();
schro_opengl_check_error (display, __LINE__);
glXSwapBuffers (display->display, display->window);
schro_opengl_unlock (display);
}
//-------------------------------------------------------------------------------------------------//
void GLXWindow::create(const String& name, uint width, uint height,
bool fullScreen, const NameValuePairList *miscParams)
{
Display *xDisplay = mGLSupport->getXDisplay();
String title = name;
uint samples = 0;
short frequency = 0;
bool vsync = false;
unsigned int vsyncInterval = 1;
int gamma = 0;
::GLXContext glxContext = 0;
::GLXDrawable glxDrawable = 0;
Window externalWindow = 0;
Window parentWindow = DefaultRootWindow(xDisplay);
int left = DisplayWidth(xDisplay, DefaultScreen(xDisplay))/2 - width/2;
int top = DisplayHeight(xDisplay, DefaultScreen(xDisplay))/2 - height/2;
mIsFullScreen = fullScreen;
if(miscParams)
{
NameValuePairList::const_iterator opt;
NameValuePairList::const_iterator end = miscParams->end();
// NB: Do not try to implement the externalGLContext option.
//
// Accepting a non-current context would expose us to the
// risk of segfaults when we made it current. Since the
// application programmers would be responsible for these
// segfaults, they are better discovering them in their code.
if ((opt = miscParams->find("currentGLContext")) != end &&
StringConverter::parseBool(opt->second))
{
if (! glXGetCurrentContext())
{
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "currentGLContext was specified with no current GL context", "GLXWindow::create");
}
glxContext = glXGetCurrentContext();
glxDrawable = glXGetCurrentDrawable();
}
// Note: Some platforms support AA inside ordinary windows
if((opt = miscParams->find("FSAA")) != end)
samples = StringConverter::parseUnsignedInt(opt->second);
if((opt = miscParams->find("displayFrequency")) != end)
frequency = (short)StringConverter::parseInt(opt->second);
if((opt = miscParams->find("vsync")) != end)
vsync = StringConverter::parseBool(opt->second);
if((opt = miscParams->find("vsyncInterval")) != end)
vsyncInterval = StringConverter::parseUnsignedInt(opt->second);
if ((opt = miscParams->find("gamma")) != end)
gamma = StringConverter::parseBool(opt->second);
if((opt = miscParams->find("left")) != end)
left = StringConverter::parseInt(opt->second);
if((opt = miscParams->find("top")) != end)
top = StringConverter::parseInt(opt->second);
if((opt = miscParams->find("title")) != end)
title = opt->second;
if ((opt = miscParams->find("externalGLControl")) != end)
mIsExternalGLControl = StringConverter::parseBool(opt->second);
if((opt = miscParams->find("parentWindowHandle")) != end)
{
vector<String>::type tokens = StringUtil::split(opt->second, " :");
if (tokens.size() == 3)
{
// deprecated display:screen:xid format
parentWindow = StringConverter::parseUnsignedLong(tokens[2]);
}
else
{
// xid format
parentWindow = StringConverter::parseUnsignedLong(tokens[0]);
}
}
else if((opt = miscParams->find("externalWindowHandle")) != end)
{
vector<String>::type tokens = StringUtil::split(opt->second, " :");
LogManager::getSingleton().logMessage(
"GLXWindow::create: The externalWindowHandle parameter is deprecated.\n"
"Use the parentWindowHandle or currentGLContext parameter instead.");
if (tokens.size() == 3)
{
// Old display:screen:xid format
// The old GLX code always created a "parent" window in this case:
parentWindow = StringConverter::parseUnsignedLong(tokens[2]);
}
else if (tokens.size() == 4)
{
// Old display:screen:xid:visualinfo format
externalWindow = StringConverter::parseUnsignedLong(tokens[2]);
}
else
{
// xid format
externalWindow = StringConverter::parseUnsignedLong(tokens[0]);
}
}
}
// Ignore fatal XErrorEvents during parameter validation:
oldXErrorHandler = XSetErrorHandler(safeXErrorHandler);
// Validate parentWindowHandle
if (parentWindow != DefaultRootWindow(xDisplay))
{
XWindowAttributes windowAttrib;
if (! XGetWindowAttributes(xDisplay, parentWindow, &windowAttrib) ||
windowAttrib.root != DefaultRootWindow(xDisplay))
{
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "Invalid parentWindowHandle (wrong server or screen)", "GLXWindow::create");
}
}
// Validate externalWindowHandle
if (externalWindow != 0)
{
XWindowAttributes windowAttrib;
if (! XGetWindowAttributes(xDisplay, externalWindow, &windowAttrib) ||
windowAttrib.root != DefaultRootWindow(xDisplay))
{
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "Invalid externalWindowHandle (wrong server or screen)", "GLXWindow::create");
}
glxDrawable = externalWindow;
}
// Derive fbConfig
::GLXFBConfig fbConfig = 0;
if (glxDrawable)
{
fbConfig = mGLSupport->getFBConfigFromDrawable (glxDrawable, &width, &height);
}
if (! fbConfig && glxContext)
{
fbConfig = mGLSupport->getFBConfigFromContext (glxContext);
}
mIsExternal = (glxDrawable != 0);
XSetErrorHandler(oldXErrorHandler);
if (! fbConfig)
{
int minAttribs[] = {
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_RED_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_GREEN_SIZE, 1,
None
};
int maxAttribs[] = {
GLX_SAMPLES, samples,
GLX_DOUBLEBUFFER, 1,
GLX_STENCIL_SIZE, INT_MAX,
GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT, 1,
None
};
fbConfig = mGLSupport->selectFBConfig(minAttribs, maxAttribs);
if (gamma != 0)
{
mGLSupport->getFBConfigAttrib(fbConfig, GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, &gamma);
}
mHwGamma = (gamma != 0);
}
if (! fbConfig)
{
// This should never happen.
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "Unexpected failure to determine a GLXFBConfig","GLXWindow::create");
}
mIsTopLevel = (! mIsExternal && parentWindow == DefaultRootWindow(xDisplay));
if (! mIsTopLevel)
{
mIsFullScreen = false;
left = top = 0;
}
if (mIsFullScreen)
{
mGLSupport->switchMode (width, height, frequency);
}
if (! mIsExternal)
{
XSetWindowAttributes attr;
ulong mask;
XVisualInfo *visualInfo = mGLSupport->getVisualFromFBConfig (fbConfig);
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap(xDisplay, DefaultRootWindow(xDisplay), visualInfo->visual, AllocNone);
attr.event_mask = StructureNotifyMask | VisibilityChangeMask | FocusChangeMask;
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
if(mIsFullScreen && mGLSupport->mAtomFullScreen == None)
{
LogManager::getSingleton().logMessage("GLXWindow::switchFullScreen: Your WM has no fullscreen support");
// A second best approach for outdated window managers
attr.backing_store = NotUseful;
attr.save_under = False;
attr.override_redirect = True;
mask |= CWSaveUnder | CWBackingStore | CWOverrideRedirect;
left = top = 0;
}
// Create window on server
mWindow = XCreateWindow(xDisplay, parentWindow, left, top, width, height, 0, visualInfo->depth, InputOutput, visualInfo->visual, mask, &attr);
XFree(visualInfo);
if(!mWindow)
{
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "Unable to create an X Window", "GLXWindow::create");
}
if (mIsTopLevel)
{
XWMHints *wmHints;
XSizeHints *sizeHints;
if ((wmHints = XAllocWMHints()) != NULL)
{
wmHints->initial_state = NormalState;
wmHints->input = True;
wmHints->flags = StateHint | InputHint;
int depth = DisplayPlanes(xDisplay, DefaultScreen(xDisplay));
// Check if we can give it an icon
if(depth == 24 || depth == 32)
{
if(mGLSupport->loadIcon("GLX_icon.png", &wmHints->icon_pixmap, &wmHints->icon_mask))
{
wmHints->flags |= IconPixmapHint | IconMaskHint;
}
}
}
// Is this really necessary ? Which broken WM might need it?
if ((sizeHints = XAllocSizeHints()) != NULL)
{
sizeHints->flags = USPosition;
}
XTextProperty titleprop;
char *lst = (char*)title.c_str();
XStringListToTextProperty((char **)&lst, 1, &titleprop);
XSetWMProperties(xDisplay, mWindow, &titleprop, NULL, NULL, 0, sizeHints, wmHints, NULL);
XFree(titleprop.value);
XFree(wmHints);
XFree(sizeHints);
XSetWMProtocols(xDisplay, mWindow, &mGLSupport->mAtomDeleteWindow, 1);
XWindowAttributes windowAttrib;
XGetWindowAttributes(xDisplay, mWindow, &windowAttrib);
left = windowAttrib.x;
top = windowAttrib.y;
width = windowAttrib.width;
height = windowAttrib.height;
}
glxDrawable = mWindow;
XMapWindow(xDisplay, mWindow);
if (mIsFullScreen)
{
switchFullScreen (true);
}
XFlush(xDisplay);
WindowEventUtilities::_addRenderWindow(this);
}
mContext = new GLXContext(mGLSupport, fbConfig, glxDrawable, glxContext);
::GLXDrawable oldDrawable = glXGetCurrentDrawable();
::GLXContext oldContext = glXGetCurrentContext();
mContext->setCurrent();
if (! mIsExternalGLControl && GLXEW_SGI_swap_control)
{
glXSwapIntervalSGI (vsync ? vsyncInterval : 0);
}
mContext->endCurrent();
glXMakeCurrent (mGLSupport->getGLDisplay(), oldDrawable, oldContext);
int fbConfigID;
mGLSupport->getFBConfigAttrib(fbConfig, GLX_FBCONFIG_ID, &fbConfigID);
LogManager::getSingleton().logMessage("GLXWindow::create used FBConfigID = " + StringConverter::toString(fbConfigID));
mName = name;
mWidth = width;
mHeight = height;
mLeft = left;
mTop = top;
mActive = true;
mClosed = false;
}
MyWindow::MyWindow(const std::string &title,int width,int height)
: initError(false),clientWidth(0),clientHeight(0),iconified(false),focused(true),sized(false),
justCreated(true),mouseMoveCallback(0),inputCallback(0),lockCursor(false),foreground(true)
{
#ifdef WIN32
hglrc=0;
hdc=0;
//
HINSTANCE hInstance=GetModuleHandle(0);
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance,MAKEINTRESOURCE(IDI_APPLICATION));
wcex.hCursor = LoadCursor(NULL,IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
#ifdef UNICODE
wcex.lpszClassName = L"win32app";
#else
wcex.lpszClassName = "win32app";
#endif
wcex.hIconSm = LoadIcon(wcex.hInstance,MAKEINTRESOURCE(IDI_APPLICATION));
if(!RegisterClassEx(&wcex)) {
std::cout << "MyWindow : Call to RegisterClassEx failed!\n";
}
#ifdef UNICODE
wchar_t title2[256];
MultiByteToWideChar(CP_ACP,0,title.c_str(),-1,title2,256);
#else
const char *title2=title.c_str();
#endif
hWnd = CreateWindow(wcex.lpszClassName,title2,WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,CW_USEDEFAULT,width,height,NULL,NULL,hInstance,NULL);
SetWindowLongPtr(hWnd,GWL_USERDATA,(LONG_PTR)this);
ShowWindow(hWnd,SW_SHOW);
//
hdc= GetDC(hWnd);
PIXELFORMATDESCRIPTOR pfd;
ZeroMemory(&pfd,sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_GENERIC_ACCELERATED | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.cRedBits = pfd.cGreenBits = pfd.cBlueBits = 8;
pfd.cDepthBits = 32;
int iPixelFormat = ChoosePixelFormat(hdc,&pfd);
if(iPixelFormat == 0) {
std::cout << "MyWindow : ChoosePixelFormat failed.\n";
initError=true;
return;
}
if(SetPixelFormat(hdc,iPixelFormat,&pfd) != TRUE) {
std::cout << "MyWindow : SetPixelFormat failed.\n";
initError=true;
return;
}
//
HGLRC tempContext = wglCreateContext(hdc);
wglMakeCurrent(hdc,tempContext);
//
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB=
(PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
PFNWGLSWAPINTERVALEXTPROC wglSwapInterval=
(PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
//
wglMakeCurrent(0,0);
wglDeleteContext(tempContext);
//
int attribs[] ={
WGL_CONTEXT_MAJOR_VERSION_ARB,3,
WGL_CONTEXT_MINOR_VERSION_ARB,3,
WGL_CONTEXT_FLAGS_ARB,0,
0
};
hglrc=wglCreateContextAttribsARB(hdc,0,attribs);
for(int i=2;i>=0;i--) {
if(!hglrc) {
attribs[3]=i;
hglrc=wglCreateContextAttribsARB(hdc,0,attribs);
}
}
if(!hglrc) {
std::cout << "OpenGL 3+ not supported.\n";
initError=true;
return;
}
wglMakeCurrent(hdc,hglrc);
wglSwapInterval(1);
//
RAWINPUTDEVICE Rid[2];
Rid[0].usUsagePage = (USHORT)0x01;//HID_USAGE_PAGE_GENERIC;
Rid[0].usUsage = (USHORT)0x02;//HID_USAGE_GENERIC_MOUSE;
Rid[0].dwFlags = RIDEV_INPUTSINK;
Rid[0].hwndTarget = hWnd;
Rid[1].usUsagePage = (USHORT)0x01;//HID_USAGE_PAGE_GENERIC;
Rid[1].usUsage = (USHORT)0x06;//HID_USAGE_GENERIC_KEYBOARD;
Rid[1].dwFlags = RIDEV_INPUTSINK;
Rid[1].hwndTarget = hWnd;
RegisterRawInputDevices(Rid,2,sizeof(RAWINPUTDEVICE));
//
//inputCodeMap[65]=keyA;
//inputCodeMap[68]=keyD;
//inputCodeMap[83]=keyS;
//inputCodeMap[87]=keyW;
#endif
#ifdef LINUX
// bool ctxErrorOccurred=false;
display = XOpenDisplay(NULL);
if(!display) {
std::cout << "Window : Failed to open X display.\n";
initError=true;
return;
}
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,
//GLX_SAMPLE_BUFFERS , 1,
//GLX_SAMPLES , 4,
None
};
int glx_major,glx_minor;
if(!glXQueryVersion(display,&glx_major,&glx_minor) ||
((glx_major == 1) && (glx_minor < 3)) || (glx_major < 1)) {
std::cout << "Window : Invalid GLX version.\n";
initError=true;
return;
}
int fbcount;
GLXFBConfig* fbc = glXChooseFBConfig(display,DefaultScreen(display),visual_attribs,&fbcount);
if(!fbc) {
std::cout << "Window :Failed to retrieve a framebuffer config.\n";
initError=true;
return;
}
int best_fbc = -1,worst_fbc = -1,best_num_samp = -1,worst_num_samp = 999;
for(int i=0; i<fbcount; ++i) {
XVisualInfo *vi = glXGetVisualFromFBConfig(display,fbc[i]);
if(vi) {
int samp_buf,samples;
glXGetFBConfigAttrib(display,fbc[i],GLX_SAMPLE_BUFFERS,&samp_buf);
glXGetFBConfigAttrib(display,fbc[i],GLX_SAMPLES,&samples);
std::cout << "Matching fbconfig " << i
<<", visual ID 0x" << vi->visualid
<< ": SAMPLE_BUFFERS = " << samp_buf
<<", SAMPLES = " << samples
<<"\n";
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;
}
}
XFree(vi);
}
GLXFBConfig bestFbc = fbc[best_fbc];
XFree(fbc);
XVisualInfo *vi = glXGetVisualFromFBConfig(display,bestFbc);
std::cout << "Chosen visual ID = 0x" << vi->visualid <<"\n";
XSetWindowAttributes swa;
swa.colormap = cmap = XCreateColormap(display,
RootWindow(display,vi->screen),
vi->visual,AllocNone);
swa.background_pixmap = None;
swa.border_pixel = 0;
swa.event_mask = ExposureMask | VisibilityChangeMask |KeyPressMask | PointerMotionMask |StructureNotifyMask;
swa.bit_gravity = StaticGravity;
win = XCreateWindow(display,RootWindow(display,vi->screen),
0,0,100,100,0,vi->depth,InputOutput,
vi->visual,
CWBorderPixel|CWColormap|CWEventMask,&swa);
if(!win) {
std::cout << "Window : Failed to create window.\n";
initError=true;
return;
}
XFree(vi);
XStoreName(display,win,title.c_str());
XMapWindow(display,win);
const char *glxExts = glXQueryExtensionsString(display,DefaultScreen(display));
glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0;
glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
glXGetProcAddressARB((const GLubyte *) "glXCreateContextAttribsARB");
ctx = 0;
ctxErrorOccurred = false;
int(*oldHandler)(Display*,XErrorEvent*) =
XSetErrorHandler(&ctxErrorHandler);
if(!isExtensionSupported(glxExts,"GLX_ARB_create_context") ||
!glXCreateContextAttribsARB) {
std::cout << "Window : glXCreateContextAttribsARB() not found.\n";
initError=true;
return;
} else {
int context_attribs[] ={
GLX_CONTEXT_MAJOR_VERSION_ARB,3,
GLX_CONTEXT_MINOR_VERSION_ARB,0,
GLX_CONTEXT_FLAGS_ARB,0,
None
};
ctx = glXCreateContextAttribsARB(display,bestFbc,0,
True,context_attribs);
XSync(display,False);
if(!ctxErrorOccurred && ctx) {
std::cout << "Created GL 3.0 context\n";
} else {
std::cout << "Window : Failed to create GL 3.0 context.\n";
initError=true;
return;
}
}
//
XSync(display,False);
XSetErrorHandler(oldHandler);
if(ctxErrorOccurred || !ctx) {
std::cout << "Window : Failed to create an OpenGL context.\n";
initError=true;
return;
}
// Verifying that context is a direct context
if(!glXIsDirect(display,ctx)) {
std::cout << "Indirect GLX rendering context obtained.\n";
} else {
std::cout << "Direct GLX rendering context obtained.\n";
}
//
glXMakeCurrent(display,win,ctx);
if(PFNGLXSWAPINTERVALMESAPROC glXSwapIntervalMESA=
(PFNGLXSWAPINTERVALMESAPROC)
glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalMESA")) {
glXSwapIntervalMESA(1);
} else if(PFNGLXSWAPINTERVALEXTPROC glXSwapIntervalEXT=
(PFNGLXSWAPINTERVALEXTPROC)
glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalEXT")) {
glXSwapIntervalEXT(display,glXGetCurrentDrawable(),1);
} else if(PFNGLXSWAPINTERVALSGIPROC glXSwapIntervalSGI=
(PFNGLXSWAPINTERVALSGIPROC)
glXGetProcAddressARB((const GLubyte *)"glXSwapIntervalSGI")) {
glXSwapIntervalSGI(1);
}
#endif
}
void DemoEntityManager::InitGraphicsSystem()
{
wxGLCanvas::SetCurrent(*m_context);
GLenum err = glewInit();
// if Glew doesn't initialize correctly.
if (err != GLEW_OK) {
//wxMessageBox(wxString(_("GLEW Error: ")) + wxString(_((char*)glewGetErrorString(err))), _("ERROR"), wxOK | wxICON_EXCLAMATION);
}
#if defined (_MSC_VER)
if (wglSwapIntervalEXT) {
wglSwapIntervalEXT(0);
}
#elif (defined (_POSIX_VER) || defined (_POSIX_VER_64))
if (glXSwapIntervalSGI) {
glXSwapIntervalSGI(0); //NOTE check for GLX_SGI_swap_control extension : http://www.opengl.org/wiki/Swap_Interval#In_Linux_.2F_GLXw
}
#elif defined(_MACOSX_VER)
//wglSwapIntervalEXT (GetContext()->GetWXGLContext());
wglSwapIntervalEXT (m_context->GetWXGLContext());
#endif
// initialize free type library
CreateOpenGlFont();
}
