GLXContext
CreateContext(Display *dpy, int screen, FBCONFIG config)
{
int pbSupport = QueryPbuffers(dpy, screen);
#if defined(GLX_VERSION_1_3)
if (pbSupport == 1) {
/* GLX 1.3 */
GLXContext c;
c = glXCreateNewContext(dpy, config, GLX_RGBA_TYPE, NULL, True);
if (!c) {
/* try indirect */
c = glXCreateNewContext(dpy, config, GLX_RGBA_TYPE, NULL, False);
}
return c;
}
#endif
#if defined(GLX_SGIX_fbconfig) && defined(GLX_SGIX_pbuffer)
if (pbSupport == 2) {
GLXContext c;
c = glXCreateContextWithConfigSGIX(dpy, config, GLX_RGBA_TYPE_SGIX, NULL, True);
if (!c) {
c = glXCreateContextWithConfigSGIX(dpy, config, GLX_RGBA_TYPE_SGIX, NULL, False);
}
return c;
}
#endif
return 0;
}
/**
* Tests for existence of the GLX_SGIX_pbuffer extension,
* and creates an appropriate GLX pbuffer
*/
GLXPBuffer::GLXPBuffer(const int shadowMapSize, const bool sharedcontext, const bool shareobjects): m_pDisplay(0), m_glxPbuffer(0), m_glxContext(0), m_pOldDisplay(0), m_glxOldDrawable(0), m_glxOldContext(0), shadowMapSize(shadowMapSize), m_bSharedContext(sharedcontext), m_bShareObjects(shareobjects)
{
if (!GLX_SGIX_pbuffer)
return;
Display *pDisplay = glXGetCurrentDisplay();
int iScreen = DefaultScreen(pDisplay);
GLXContext glxContext = glXGetCurrentContext();
int iConfigCount;
GLXFBConfig *glxConfig;
if (m_bSharedContext)
glxConfig = glXGetFBConfigs(pDisplay, iScreen, &iConfigCount);
else {
int pf_attr[16] = {
GLX_DRAWABLE_TYPE,
GLX_PBUFFER_BIT,
GLX_RENDER_TYPE,
GLX_RGBA_BIT,
0
};
glxConfig = glXChooseFBConfigSGIX(pDisplay, iScreen, pf_attr, &iConfigCount);
}
if (!glxConfig)
return;
int pb_attr[16] = {
GLX_LARGEST_PBUFFER, false,
GLX_PRESERVED_CONTENTS, true,
0
};
m_glxPbuffer = glXCreateGLXPbufferSGIX(pDisplay, glxConfig[0], shadowMapSize, shadowMapSize, pb_attr);
if (!m_glxPbuffer)
return;
if (m_bSharedContext)
m_glxContext = glxContext;
else {
m_glxContext = glXCreateContextWithConfigSGIX(pDisplay, glxConfig[0], GLX_RGBA_TYPE, (m_bShareObjects?glxContext:NULL), true);
if (!glxConfig)
return;
}
m_pDisplay = pDisplay;
}
/*
* constructor (linux specific)
*/
PBuffer::PBuffer(int width,int height,int flags) : width(width), height(height), data(NULL)
{
Display *display = glXGetCurrentDisplay();
int screen = DefaultScreen(display);
GLXContext old_context = glXGetCurrentContext();
std::vector<int> attrib;
attrib.push_back(GLX_RENDER_TYPE);
attrib.push_back(GLX_RGBA_BIT);
attrib.push_back(GLX_DRAWABLE_TYPE);
attrib.push_back(GLX_PBUFFER_BIT);
if(flags & GEM_PBUFLAG_RGB || flags & GEM_PBUFLAG_RGBA) {
attrib.push_back(GLX_RED_SIZE);
attrib.push_back(flags & GEM_PBUFLAG_FLOAT ? 32 : 8);
attrib.push_back(GLX_GREEN_SIZE);
attrib.push_back(flags & GEM_PBUFLAG_FLOAT ? 32 : 8);
attrib.push_back(GLX_BLUE_SIZE);
attrib.push_back(flags & GEM_PBUFLAG_FLOAT ? 32 : 8);
if(flags & GEM_PBUFLAG_RGBA) {
attrib.push_back(GLX_ALPHA_SIZE);
attrib.push_back(flags & GEM_PBUFLAG_FLOAT ? 32 : 8);
}
}
if(flags & GEM_PBUFLAG_DEPTH) {
attrib.push_back(GLX_DEPTH_SIZE);
attrib.push_back(24);
}
if(flags & GEM_PBUFLAG_STENCIL) {
attrib.push_back(GLX_STENCIL_SIZE);
attrib.push_back(8);
}
if(flags & GEM_PBUFLAG_FLOAT) {
attrib.push_back(GLX_FLOAT_COMPONENTS_NV);
attrib.push_back(true);
}
if(flags & GEM_PBUFLAG_MULTISAMPLE_2 || flags & GEM_PBUFLAG_MULTISAMPLE_4) {
attrib.push_back(GLX_SAMPLE_BUFFERS_ARB);
attrib.push_back(true);
attrib.push_back(GLX_SAMPLES_ARB);
attrib.push_back(flags & GEM_PBUFLAG_MULTISAMPLE_2 ? 2 : 4);
}
attrib.push_back(0);
std::vector<int> pattrib;
pattrib.push_back(GLX_LARGEST_PBUFFER);
pattrib.push_back(true);
pattrib.push_back(GLX_PRESERVED_CONTENTS);
pattrib.push_back(true);
GLXPbuffer pbuffer;
GLXContext context;
try {
int count;
GLXFBConfig *config;
if(GLXEW_SGIX_fbconfig && GLXEW_SGIX_pbuffer) {
debug("using SGIX pbuffers\n");
pattrib.push_back(0);
config = glXChooseFBConfigSGIX(display,screen,&attrib[0],&count);
if(!config) throw("glXChooseFBConfigSGIX() failed");
pbuffer = glXCreateGLXPbufferSGIX(display,config[0],width,height,&pattrib[0]);
if(!pbuffer) throw("glXCreateGLXPbufferSGIX() failed");
context = glXCreateContextWithConfigSGIX(display,config[0],GLX_RGBA_TYPE,old_context,true);
if(!context) throw("glXCreateContextWithConfigSGIX() failed");
} else if (NULL!=glXChooseFBConfig) { /* LATER make a better check! */
debug("using GLX pbuffers");
pattrib.push_back(GLX_PBUFFER_WIDTH);
pattrib.push_back(width);
pattrib.push_back(GLX_PBUFFER_HEIGHT);
pattrib.push_back(height);
pattrib.push_back(0);
config = glXChooseFBConfig(display,screen,&attrib[0],&count);
if(!config) throw("glXChooseFBConfig() failed");
pbuffer = glXCreatePbuffer(display,config[0],&pattrib[0]);
if(!pbuffer) throw("glXCreatePbuffer() failed");
XVisualInfo *visual = glXGetVisualFromFBConfig(display,config[0]);
if(!visual) throw("glXGetVisualFromFBConfig() failed");
context = glXCreateContext(display,visual,old_context,true);
if(!context) throw("glXCreateContext() failed");
} else {
throw("your system lacks PBuffer support!");
}
}
catch(const char *err) {
error("PBuffer::PBuffer(): %s",err);
pbuffer = glXGetCurrentDrawable();
context = old_context;
}
data = new PBuffer_data;
data->display = display;
data->pbuffer = pbuffer;
data->context = context;
data->old_pbuffer = glXGetCurrentDrawable();
data->old_context = old_context;
}
/* ARGSUSED5 */ /* Only Win32 uses gameMode parameter. */
GLUTwindow *
__glutCreateWindow(GLUTwindow * parent,
int x, int y, int width, int height, int gameMode)
{
GLUTwindow *window;
XSetWindowAttributes wa;
unsigned long attribMask;
int winnum;
int i;
#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_fbconfig)
GLXFBConfigSGIX fbc;
#else
void *fbc;
#endif
#if defined(_WIN32)
WNDCLASS wc;
int style;
int pixelFormat;
if (!GetClassInfo(GetModuleHandle(NULL), "GLUT", &wc)) {
__glutOpenWin32Connection(NULL);
}
#else
if (!__glutDisplay) {
__glutOpenXConnection(NULL);
}
#endif
if (__glutGameModeWindow) {
__glutFatalError("cannot create windows in game mode.");
}
winnum = getUnusedWindowSlot();
window = (GLUTwindow *) malloc(sizeof(GLUTwindow));
if (!window) {
__glutFatalError("out of memory.");
}
window->num = winnum;
#if !defined(_WIN32)
window->vis = __glutDetermineWindowVisual(&window->treatAsSingle,
&window->visAlloced, (void**) &fbc);
if (!window->vis) {
__glutFatalError(
"visual with necessary capabilities not found.");
}
__glutSetupColormap(window->vis, &window->colormap, &window->cmap);
#endif
window->eventMask = StructureNotifyMask | ExposureMask;
attribMask = CWBackPixmap | CWBorderPixel | CWColormap | CWEventMask;
wa.background_pixmap = None;
wa.border_pixel = 0;
wa.colormap = window->cmap;
wa.event_mask = window->eventMask;
if (parent) {
if (parent->eventMask & GLUT_HACK_STOP_PROPAGATE_MASK) {
wa.event_mask |= GLUT_HACK_STOP_PROPAGATE_MASK;
}
attribMask |= CWDontPropagate;
wa.do_not_propagate_mask = parent->eventMask & GLUT_DONT_PROPAGATE_FILTER_MASK;
} else {
wa.do_not_propagate_mask = 0;
}
/* Stash width and height before Win32's __glutAdjustCoords
possibly overwrites the values. */
window->width = width;
window->height = height;
window->forceReshape = True;
window->ignoreKeyRepeat = False;
#if defined(_WIN32)
__glutAdjustCoords(parent ? parent->win : NULL,
&x, &y, &width, &height);
if (parent) {
style = WS_CHILD;
} else {
if (gameMode) {
/* Game mode window should be a WS_POPUP window to
ensure that the taskbar is hidden by it. A standard
WS_OVERLAPPEDWINDOW does not hide the task bar. */
style = WS_POPUP | WS_MAXIMIZE;
} else {
/* A standard toplevel window with borders and such. */
style = WS_OVERLAPPEDWINDOW;
}
}
window->win = CreateWindow("GLUT", "GLUT",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | style,
x, y, width, height, parent ? parent->win : __glutRoot,
NULL, GetModuleHandle(NULL), 0);
window->hdc = GetDC(window->win);
/* Must set the XHDC for fake glXChooseVisual & fake
glXCreateContext & fake XAllocColorCells. */
XHDC = window->hdc;
window->vis = __glutDetermineWindowVisual(&window->treatAsSingle,
&window->visAlloced, &fbc);
if (!window->vis) {
__glutFatalError(
"pixel format with necessary capabilities not found.");
}
pixelFormat = window->vis->num;
if (pixelFormat == 0) {
__glutFatalError("ChoosePixelFormat failed during window create.");
}
if (!SetPixelFormat(window->hdc, pixelFormat, &window->vis->pfd)) {
__glutFatalError("SetPixelFormat failed during window create.");
}
__glutSetupColormap(window->vis, &window->colormap, &window->cmap);
/* Make sure subwindows get a windowStatus callback. */
if (parent) {
PostMessage(parent->win, WM_ACTIVATE, 0, 0);
}
window->renderDc = window->hdc;
#else /* X Window System */
window->win = XCreateWindow(__glutDisplay,
parent == NULL ? __glutRoot : parent->win,
x, y, width, height, 0,
window->vis->depth, InputOutput, window->vis->visual,
attribMask, &wa);
#endif
window->renderWin = window->win;
#if defined(GLX_VERSION_1_1) && defined(GLX_SGIX_fbconfig)
if (fbc) {
window->ctx = glXCreateContextWithConfigSGIX(__glutDisplay, fbc,
GLX_RGBA_TYPE_SGIX, None, __glutTryDirect);
} else
#endif
{
#ifdef _WIN32
window->ctx = wglCreateContext(window->hdc);
#else
window->ctx = glXCreateContext(__glutDisplay, window->vis,
None, __glutTryDirect);
#endif
}
if (!window->ctx) {
__glutFatalError(
"failed to create OpenGL rendering context.");
}
window->renderCtx = window->ctx;
#if !defined(_WIN32)
window->isDirect = glXIsDirect(__glutDisplay, window->ctx);
if (__glutForceDirect) {
if (!window->isDirect) {
__glutFatalError("direct rendering not possible.");
}
}
#endif
window->parent = parent;
if (parent) {
window->siblings = parent->children;
parent->children = window;
} else {
window->siblings = NULL;
}
window->overlay = NULL;
window->children = NULL;
window->display = defaultDisplay;
window->reshape = __glutDefaultReshape;
window->mouse = NULL;
window->motion = NULL;
window->passive = NULL;
window->entry = NULL;
window->keyboard = NULL;
window->keyboardUp = NULL;
window->windowStatus = NULL;
window->visibility = NULL;
window->special = NULL;
window->specialUp = NULL;
window->buttonBox = NULL;
window->dials = NULL;
window->spaceMotion = NULL;
window->spaceRotate = NULL;
window->spaceButton = NULL;
window->tabletMotion = NULL;
window->tabletButton = NULL;
#ifdef _WIN32
window->joystick = NULL;
window->joyPollInterval = 0;
#endif
window->tabletPos[0] = -1;
window->tabletPos[1] = -1;
window->shownState = 0;
window->visState = -1; /* not VisibilityUnobscured,
VisibilityPartiallyObscured, or
VisibilityFullyObscured */
window->entryState = -1; /* not EnterNotify or LeaveNotify */
window->desiredConfMask = 0;
window->buttonUses = 0;
window->cursor = GLUT_CURSOR_INHERIT;
/* Setup window to be mapped when glutMainLoop starts. */
window->workMask = GLUT_MAP_WORK;
#ifdef _WIN32
if (gameMode) {
/* When mapping a game mode window, just show
the window. We have already created the game
mode window with a maximize flag at creation
time. Doing a ShowWindow(window->win, SW_SHOWNORMAL)
would be wrong for a game mode window since it
would unmaximize the window. */
window->desiredMapState = GameModeState;
} else {
window->desiredMapState = NormalState;
}
#else
window->desiredMapState = NormalState;
#endif
window->prevWorkWin = __glutWindowWorkList;
__glutWindowWorkList = window;
/* Initially, no menus attached. */
for (i = 0; i < GLUT_MAX_MENUS; i++) {
window->menu[i] = 0;
}
/* Add this new window to the window list. */
__glutWindowList[winnum] = window;
/* Make the new window the current window. */
__glutSetWindow(window);
__glutDetermineMesaSwapHackSupport();
if (window->treatAsSingle) {
/* We do this because either the window really is single
buffered (in which case this is redundant, but harmless,
because this is the initial single-buffered context
state); or we are treating a double buffered window as a
single-buffered window because the system does not appear
to export any suitable single- buffered visuals (in which
the following are necessary). */
glDrawBuffer(GL_FRONT);
glReadBuffer(GL_FRONT);
}
return window;
}
GLXContext Window::createGLXContext( GLXFBConfig* fbConfig )
{
if( !_impl->xDisplay )
{
sendError( ERROR_GLXWINDOW_NO_DISPLAY );
return 0;
}
if( !fbConfig )
{
sendError( ERROR_SYSTEMWINDOW_NO_PIXELFORMAT );
return 0;
}
GLXContext shCtx = 0;
const SystemWindow* shareWindow = getSharedContextWindow();
if( shareWindow )
{
const WindowIF* shareGLXWindow =
dynamic_cast< const WindowIF* >( shareWindow );
if( shareGLXWindow )
shCtx = shareGLXWindow->getGLXContext();
#ifdef EQUALIZER_USE_QT5WIDGETS
else if( dynamic_cast< const qt::WindowIF* >( shareWindow ))
{
// allows sharing with Qt window
shareWindow->makeCurrent();
shCtx = glXGetCurrentContext();
}
#endif
}
int type = GLX_RGBA_TYPE;
if( getIAttribute( IATTR_HINT_DRAWABLE ) == PBUFFER &&
( getIAttribute( IATTR_PLANES_COLOR ) == RGBA16F ||
getIAttribute( IATTR_PLANES_COLOR ) == RGBA32F ))
{
type = GLX_RGBA_FLOAT_TYPE;
}
GLXContext context = 0;
if( glXCreateContextAttribsARB &&
getIAttribute( IATTR_HINT_CORE_PROFILE ) == ON )
{
int attribList[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB,
getIAttribute( IATTR_HINT_OPENGL_MAJOR ),
GLX_CONTEXT_MINOR_VERSION_ARB,
getIAttribute( IATTR_HINT_OPENGL_MINOR ),
GLX_RENDER_TYPE, type,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
None
};
context = glXCreateContextAttribsARB( _impl->xDisplay, fbConfig[0],
shCtx, True, attribList );
}
else
{
if( GLXEW_VERSION_1_3 )
context = glXCreateNewContext( _impl->xDisplay, fbConfig[0], type,
shCtx, True );
else
context = glXCreateContextWithConfigSGIX( _impl->xDisplay,
fbConfig[0], type, shCtx, True );
}
#ifdef Darwin
// WAR http://xquartz.macosforge.org/trac/ticket/466
if( !context )
{
XVisualInfo* visInfo = GLXEW_VERSION_1_3 ?
glXGetVisualFromFBConfig( _impl->xDisplay, fbConfig[0] ) :
glXGetVisualFromFBConfigSGIX( _impl->xDisplay, fbConfig[0] );
if( !visInfo )
{
std::vector<int> attributes;
attributes.push_back( GLX_RGBA );
attributes.push_back( GLX_RED_SIZE );
attributes.push_back( 1 );
attributes.push_back( GLX_ALPHA_SIZE );
attributes.push_back( 1 );
attributes.push_back( GLX_DEPTH_SIZE );
attributes.push_back( 1 );
attributes.push_back( GLX_DOUBLEBUFFER );
attributes.push_back( None );
const int screen = DefaultScreen( _impl->xDisplay );
visInfo = glXChooseVisual( _impl->xDisplay, screen,
&attributes.front( ));
if( !visInfo )
{
sendError( ERROR_GLXWINDOW_NO_VISUAL );
return 0;
}
}
context = glXCreateContext( _impl->xDisplay, visInfo, shCtx, True );
XFree( visInfo );
}
#endif
if( !context )
{
sendError( ERROR_GLXWINDOW_CREATECONTEXT_FAILED );
return 0;
}
return context;
}
