already_AddRefed<GLContextGLX>
GLContextGLX::CreateGLContext(
const SurfaceCaps& caps,
GLContextGLX* shareContext,
bool isOffscreen,
Display* display,
GLXDrawable drawable,
GLXFBConfig cfg,
bool deleteDrawable,
gfxXlibSurface* pixmap)
{
GLXLibrary& glx = sGLXLibrary;
int db = 0;
int err = glx.xGetFBConfigAttrib(display, cfg,
LOCAL_GLX_DOUBLEBUFFER, &db);
if (LOCAL_GLX_BAD_ATTRIBUTE != err) {
#ifdef DEBUG
if (DebugMode()) {
printf("[GLX] FBConfig is %sdouble-buffered\n", db ? "" : "not ");
}
#endif
}
GLXContext context;
nsRefPtr<GLContextGLX> glContext;
bool error;
ScopedXErrorHandler xErrorHandler;
TRY_AGAIN_NO_SHARING:
error = false;
GLXContext glxContext = shareContext ? shareContext->mContext : nullptr;
if (glx.HasRobustness()) {
int attrib_list[] = {
LOCAL_GL_CONTEXT_FLAGS_ARB, LOCAL_GL_CONTEXT_ROBUST_ACCESS_BIT_ARB,
LOCAL_GL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, LOCAL_GL_LOSE_CONTEXT_ON_RESET_ARB,
0,
};
context = glx.xCreateContextAttribs(
display,
cfg,
glxContext,
True,
attrib_list);
} else {
context = glx.xCreateNewContext(
display,
cfg,
LOCAL_GLX_RGBA_TYPE,
glxContext,
True);
}
if (context) {
glContext = new GLContextGLX(caps,
shareContext,
isOffscreen,
display,
drawable,
context,
deleteDrawable,
db,
pixmap);
if (!glContext->Init())
error = true;
} else {
error = true;
}
error |= xErrorHandler.SyncAndGetError(display);
if (error) {
if (shareContext) {
shareContext = nullptr;
goto TRY_AGAIN_NO_SHARING;
}
NS_WARNING("Failed to create GLXContext!");
glContext = nullptr; // note: this must be done while the graceful X error handler is set,
// because glxMakeCurrent can give a GLXBadDrawable error
}
return glContext.forget();
}
already_AddRefed<GLContextGLX>
GLContextGLX::CreateGLContext(CreateContextFlags flags, const SurfaceCaps& caps,
GLContextGLX* shareContext, bool isOffscreen,
Display* display, GLXDrawable drawable, GLXFBConfig cfg,
bool deleteDrawable, gfxXlibSurface* pixmap,
ContextProfile profile)
{
GLXLibrary& glx = sGLXLibrary;
int db = 0;
int err = glx.xGetFBConfigAttrib(display, cfg,
LOCAL_GLX_DOUBLEBUFFER, &db);
if (LOCAL_GLX_BAD_ATTRIBUTE != err) {
if (ShouldSpew()) {
printf("[GLX] FBConfig is %sdouble-buffered\n", db ? "" : "not ");
}
}
GLXContext context;
RefPtr<GLContextGLX> glContext;
bool error;
ScopedXErrorHandler xErrorHandler;
TRY_AGAIN_NO_SHARING:
error = false;
GLXContext glxContext = shareContext ? shareContext->mContext : nullptr;
if (glx.HasCreateContextAttribs()) {
AutoTArray<int, 11> attrib_list;
if (glx.HasRobustness()) {
int robust_attribs[] = {
LOCAL_GL_CONTEXT_FLAGS_ARB, LOCAL_GL_CONTEXT_ROBUST_ACCESS_BIT_ARB,
LOCAL_GL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, LOCAL_GL_LOSE_CONTEXT_ON_RESET_ARB,
};
attrib_list.AppendElements(robust_attribs, MOZ_ARRAY_LENGTH(robust_attribs));
}
if (profile == ContextProfile::OpenGLCore) {
int core_attribs[] = {
LOCAL_GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
LOCAL_GLX_CONTEXT_MINOR_VERSION_ARB, 2,
LOCAL_GLX_CONTEXT_FLAGS_ARB, LOCAL_GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
};
attrib_list.AppendElements(core_attribs, MOZ_ARRAY_LENGTH(core_attribs));
};
attrib_list.AppendElement(0);
context = glx.xCreateContextAttribs(
display,
cfg,
glxContext,
True,
attrib_list.Elements());
} else {
context = glx.xCreateNewContext(
display,
cfg,
LOCAL_GLX_RGBA_TYPE,
glxContext,
True);
}
if (context) {
glContext = new GLContextGLX(flags, caps, shareContext, isOffscreen, display,
drawable, context, deleteDrawable, db, pixmap,
profile);
if (!glContext->Init())
error = true;
} else {
error = true;
}
error |= xErrorHandler.SyncAndGetError(display);
if (error) {
if (shareContext) {
shareContext = nullptr;
goto TRY_AGAIN_NO_SHARING;
}
NS_WARNING("Failed to create GLXContext!");
glContext = nullptr; // note: this must be done while the graceful X error handler is set,
// because glxMakeCurrent can give a GLXBadDrawable error
}
return glContext.forget();
}
static already_AddRefed<GLContextGLX>
CreateOffscreenPixmapContext(const gfxIntSize& size)
{
GLXLibrary& glx = sGLXLibrary;
if (!glx.EnsureInitialized()) {
return nullptr;
}
Display *display = DefaultXDisplay();
int xscreen = DefaultScreen(display);
int attribs[] = {
LOCAL_GLX_DRAWABLE_TYPE, LOCAL_GLX_PIXMAP_BIT,
LOCAL_GLX_X_RENDERABLE, True,
0
};
int numConfigs = 0;
ScopedXFree<GLXFBConfig> cfgs;
cfgs = glx.xChooseFBConfig(display,
xscreen,
attribs,
&numConfigs);
if (!cfgs) {
return nullptr;
}
MOZ_ASSERT(numConfigs > 0,
"glXChooseFBConfig() failed to match our requested format and "
"violated its spec!");
int visid = None;
int chosenIndex = 0;
for (int i = 0; i < numConfigs; ++i) {
int dtype;
if (glx.xGetFBConfigAttrib(display, cfgs[i], LOCAL_GLX_DRAWABLE_TYPE, &dtype) != Success
|| !(dtype & LOCAL_GLX_PIXMAP_BIT))
{
continue;
}
if (glx.xGetFBConfigAttrib(display, cfgs[i], LOCAL_GLX_VISUAL_ID, &visid) != Success
|| visid == 0)
{
continue;
}
chosenIndex = i;
break;
}
if (!visid) {
NS_WARNING("glXChooseFBConfig() didn't give us any configs with visuals!");
return nullptr;
}
Visual *visual;
int depth;
FindVisualAndDepth(display, visid, &visual, &depth);
ScopedXErrorHandler xErrorHandler;
GLXPixmap glxpixmap = 0;
bool error = false;
gfxIntSize dummySize(16, 16);
nsRefPtr<gfxXlibSurface> xsurface = gfxXlibSurface::Create(DefaultScreenOfDisplay(display),
visual,
dummySize);
if (xsurface->CairoStatus() != 0) {
error = true;
goto DONE_CREATING_PIXMAP;
}
// Handle slightly different signature between glXCreatePixmap and
// its pre-GLX-1.3 extension equivalent (though given the ABI, we
// might not need to).
if (glx.GLXVersionCheck(1, 3)) {
glxpixmap = glx.xCreatePixmap(display,
cfgs[chosenIndex],
xsurface->XDrawable(),
nullptr);
} else {
glxpixmap = glx.xCreateGLXPixmapWithConfig(display,
cfgs[chosenIndex],
xsurface->
XDrawable());
}
if (glxpixmap == 0) {
error = true;
}
DONE_CREATING_PIXMAP:
nsRefPtr<GLContextGLX> glContext;
bool serverError = xErrorHandler.SyncAndGetError(display);
if (!error && // earlier recorded error
!serverError)
{
// We might have an alpha channel, but it doesn't matter.
SurfaceCaps dummyCaps = SurfaceCaps::Any();
GLContextGLX* shareContext = GetGlobalContextGLX();
glContext = GLContextGLX::CreateGLContext(dummyCaps,
shareContext,
true,
display,
glxpixmap,
cfgs[chosenIndex],
true,
xsurface);
}
return glContext.forget();
}
static already_AddRefed<GLContextGLX>
CreateOffscreenPixmapContext(CreateContextFlags flags, const IntSize& size,
const SurfaceCaps& minCaps, nsACString* const out_failureId,
ContextProfile profile = ContextProfile::OpenGLCompatibility)
{
GLXLibrary* glx = &sGLXLibrary;
if (!glx->EnsureInitialized())
return nullptr;
Display* display = DefaultXDisplay();
int screen = DefaultScreen(display);
ScopedXFree<GLXFBConfig> scopedConfigArr;
GLXFBConfig config;
int visid;
if (!ChooseConfig(glx, display, screen, minCaps, &scopedConfigArr, &config, &visid)) {
NS_WARNING("Failed to find a compatible config.");
return nullptr;
}
Visual* visual;
int depth;
FindVisualAndDepth(display, visid, &visual, &depth);
ScopedXErrorHandler xErrorHandler;
bool error = false;
// Must be declared before goto:
Drawable drawable;
GLXPixmap pixmap;
gfx::IntSize dummySize(16, 16);
RefPtr<gfxXlibSurface> surface = gfxXlibSurface::Create(DefaultScreenOfDisplay(display),
visual,
dummySize);
if (surface->CairoStatus() != 0) {
error = true;
goto DONE_CREATING_PIXMAP;
}
// Handle slightly different signature between glXCreatePixmap and
// its pre-GLX-1.3 extension equivalent (though given the ABI, we
// might not need to).
drawable = surface->XDrawable();
if (glx->GLXVersionCheck(1, 3)) {
pixmap = glx->xCreatePixmap(display, config, drawable, nullptr);
} else {
pixmap = glx->xCreateGLXPixmapWithConfig(display, config, drawable);
}
if (pixmap == 0) {
error = true;
}
DONE_CREATING_PIXMAP:
bool serverError = xErrorHandler.SyncAndGetError(display);
if (error || serverError)
return nullptr;
GLContextGLX* shareContext = GetGlobalContextGLX();
return GLContextGLX::CreateGLContext(flags, minCaps, shareContext, true, display,
pixmap, config, true, surface, profile);
}