already_AddRefed<GLContext>
GLContextProviderGLX::CreateOffscreen(const gfxIntSize& aSize,
const ContextFormat& aFormat)
{
nsRefPtr<GLContextGLX> glContext =
CreateOffscreenPixmapContext(aSize, aFormat, PR_TRUE);
if (!glContext) {
return nsnull;
}
if (!glContext->GetSharedContext()) {
// no point in returning anything if sharing failed, we can't
// render from this
return nsnull;
}
if (!glContext->ResizeOffscreenFBO(aSize)) {
// we weren't able to create the initial
// offscreen FBO, so this is dead
return nsnull;
}
return glContext.forget();
}
GLContext *
GLContextProviderGLX::GetGlobalContext()
{
static bool triedToCreateContext = false;
if (!triedToCreateContext && !gGlobalContext) {
triedToCreateContext = true;
gGlobalContext = CreateOffscreenPixmapContext(gfxIntSize(1, 1),
ContextFormat(ContextFormat::BasicRGB24),
PR_FALSE);
if (gGlobalContext)
gGlobalContext->SetIsGlobalSharedContext(PR_TRUE);
}
return gGlobalContext;
}
already_AddRefed<GLContext>
GLContextProviderGLX::CreateOffscreen(const gfxIntSize& size,
const SurfaceCaps& caps,
ContextFlags flags)
{
LibType libType = GLXLibrary::SelectLibrary(flags);
gCurrLib = libType;
gfxIntSize dummySize = gfxIntSize(16, 16);
nsRefPtr<GLContextGLX> glContext =
CreateOffscreenPixmapContext(dummySize, libType);
if (!glContext)
return nullptr;
if (!glContext->InitOffscreen(size, caps))
return nullptr;
return glContext.forget();
}
GLContext*
GLContextProviderGLX::GetGlobalContext(const ContextFlags aFlag)
{
// TODO: get GLX context sharing to work well with multiple threads
if (!gUseContextSharing) {
return nullptr;
}
LibType libType = GLXLibrary::SelectLibrary(aFlag);
static bool triedToCreateContext[GLXLibrary::LIBS_MAX] = {false, false};
if (!triedToCreateContext[libType] && !gGlobalContext[libType]) {
triedToCreateContext[libType] = true;
gfxIntSize dummySize = gfxIntSize(16, 16);
gGlobalContext[libType] = CreateOffscreenPixmapContext(dummySize, libType);
if (gGlobalContext[libType])
gGlobalContext[libType]->SetIsGlobalSharedContext(true);
}
return gGlobalContext[libType];
}
