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gecko-dev/gfx/thebes/gfxPlatformGtk.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#define PANGO_ENABLE_BACKEND
#define PANGO_ENABLE_ENGINE
#include "gfxPlatformGtk.h"
#include "prenv.h"
#include "nsUnicharUtils.h"
#include "nsUnicodeProperties.h"
#include "gfx2DGlue.h"
#include "gfxFcPlatformFontList.h"
#include "gfxConfig.h"
#include "gfxContext.h"
#include "gfxUserFontSet.h"
#include "gfxUtils.h"
#include "gfxFT2FontBase.h"
#include "gfxPrefs.h"
#include "gfxTextRun.h"
#include "VsyncSource.h"
#include "mozilla/Atomics.h"
#include "mozilla/Monitor.h"
#include "base/task.h"
#include "base/thread.h"
#include "base/message_loop.h"
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/gfx/2D.h"
#include "cairo.h"
#include <gtk/gtk.h>
#include "gfxImageSurface.h"
#ifdef MOZ_X11
#include <gdk/gdkx.h>
#include "gfxXlibSurface.h"
#include "cairo-xlib.h"
#include "mozilla/Preferences.h"
#include "mozilla/X11Util.h"
#include "GLContextProvider.h"
#include "GLContextGLX.h"
#include "GLXLibrary.h"
/* Undefine the Status from Xlib since it will conflict with system headers on
* OSX */
#if defined(__APPLE__) && defined(Status)
#undef Status
#endif
#ifdef MOZ_WAYLAND
#include <gdk/gdkwayland.h>
#endif
#endif /* MOZ_X11 */
#include <fontconfig/fontconfig.h>
#include "nsMathUtils.h"
#define GDK_PIXMAP_SIZE_MAX 32767
#define GFX_PREF_MAX_GENERIC_SUBSTITUTIONS \
"gfx.font_rendering.fontconfig.max_generic_substitutions"
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::unicode;
using mozilla::dom::SystemFontListEntry;
gfxPlatformGtk::gfxPlatformGtk() {
if (!gfxPlatform::IsHeadless()) {
gtk_init(nullptr, nullptr);
}
mMaxGenericSubstitutions = UNINITIALIZED_VALUE;
#ifdef MOZ_X11
if (!gfxPlatform::IsHeadless() && XRE_IsParentProcess()) {
if (GDK_IS_X11_DISPLAY(gdk_display_get_default()) &&
mozilla::Preferences::GetBool("gfx.xrender.enabled")) {
gfxVars::SetUseXRender(true);
}
}
#endif
InitBackendPrefs(GetBackendPrefs());
#ifdef MOZ_X11
if (gfxPlatform::IsHeadless() &&
GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
mCompositorDisplay = XOpenDisplay(nullptr);
MOZ_ASSERT(mCompositorDisplay, "Failed to create compositor display!");
} else {
mCompositorDisplay = nullptr;
}
#endif // MOZ_X11
#ifdef MOZ_WAYLAND
// Wayland compositors use g_get_monotonic_time() to get timestamps.
mWaylandLastVsyncTimestamp = (g_get_monotonic_time() / 1000);
// Set default display fps to 60
mWaylandFrameDelay = 1000 / 60;
#endif
}
gfxPlatformGtk::~gfxPlatformGtk() {
#ifdef MOZ_X11
if (mCompositorDisplay) {
XCloseDisplay(mCompositorDisplay);
}
#endif // MOZ_X11
}
void gfxPlatformGtk::FlushContentDrawing() {
if (gfxVars::UseXRender()) {
XFlush(DefaultXDisplay());
}
}
already_AddRefed<gfxASurface> gfxPlatformGtk::CreateOffscreenSurface(
const IntSize& aSize, gfxImageFormat aFormat) {
if (!Factory::AllowedSurfaceSize(aSize)) {
return nullptr;
}
RefPtr<gfxASurface> newSurface;
bool needsClear = true;
#ifdef MOZ_X11
// XXX we really need a different interface here, something that passes
// in more context, including the display and/or target surface type that
// we should try to match
GdkScreen* gdkScreen = gdk_screen_get_default();
if (gdkScreen) {
// When forcing PaintedLayers to use image surfaces for content,
// force creation of gfxImageSurface surfaces.
if (gfxVars::UseXRender() && !UseImageOffscreenSurfaces()) {
Screen* screen = gdk_x11_screen_get_xscreen(gdkScreen);
XRenderPictFormat* xrenderFormat =
gfxXlibSurface::FindRenderFormat(DisplayOfScreen(screen), aFormat);
if (xrenderFormat) {
newSurface = gfxXlibSurface::Create(screen, xrenderFormat, aSize);
}
} else {
// We're not going to use XRender, so we don't need to
// search for a render format
newSurface = new gfxImageSurface(aSize, aFormat);
// The gfxImageSurface ctor zeroes this for us, no need to
// waste time clearing again
needsClear = false;
}
}
#endif
if (!newSurface) {
// We couldn't create a native surface for whatever reason;
// e.g., no display, no RENDER, bad size, etc.
// Fall back to image surface for the data.
newSurface = new gfxImageSurface(aSize, aFormat);
}
if (newSurface->CairoStatus()) {
newSurface = nullptr; // surface isn't valid for some reason
}
if (newSurface && needsClear) {
gfxUtils::ClearThebesSurface(newSurface);
}
return newSurface.forget();
}
nsresult gfxPlatformGtk::GetFontList(nsAtom* aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts) {
gfxPlatformFontList::PlatformFontList()->GetFontList(
aLangGroup, aGenericFamily, aListOfFonts);
return NS_OK;
}
nsresult gfxPlatformGtk::UpdateFontList() {
gfxPlatformFontList::PlatformFontList()->UpdateFontList();
return NS_OK;
}
// xxx - this is ubuntu centric, need to go through other distros and flesh
// out a more general list
static const char kFontDejaVuSans[] = "DejaVu Sans";
static const char kFontDejaVuSerif[] = "DejaVu Serif";
static const char kFontFreeSans[] = "FreeSans";
static const char kFontFreeSerif[] = "FreeSerif";
static const char kFontTakaoPGothic[] = "TakaoPGothic";
static const char kFontTwemojiMozilla[] = "Twemoji Mozilla";
static const char kFontDroidSansFallback[] = "Droid Sans Fallback";
static const char kFontWenQuanYiMicroHei[] = "WenQuanYi Micro Hei";
static const char kFontNanumGothic[] = "NanumGothic";
static const char kFontSymbola[] = "Symbola";
void gfxPlatformGtk::GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
Script aRunScript,
nsTArray<const char*>& aFontList) {
EmojiPresentation emoji = GetEmojiPresentation(aCh);
if (emoji != EmojiPresentation::TextOnly) {
if (aNextCh == kVariationSelector16 ||
(aNextCh != kVariationSelector15 &&
emoji == EmojiPresentation::EmojiDefault)) {
// if char is followed by VS16, try for a color emoji glyph
aFontList.AppendElement(kFontTwemojiMozilla);
}
}
aFontList.AppendElement(kFontDejaVuSerif);
aFontList.AppendElement(kFontFreeSerif);
aFontList.AppendElement(kFontDejaVuSans);
aFontList.AppendElement(kFontFreeSans);
aFontList.AppendElement(kFontSymbola);
// add fonts for CJK ranges
// xxx - this isn't really correct, should use the same CJK font ordering
// as the pref font code
if (aCh >= 0x3000 && ((aCh < 0xe000) || (aCh >= 0xf900 && aCh < 0xfff0) ||
((aCh >> 16) == 2))) {
aFontList.AppendElement(kFontTakaoPGothic);
aFontList.AppendElement(kFontDroidSansFallback);
aFontList.AppendElement(kFontWenQuanYiMicroHei);
aFontList.AppendElement(kFontNanumGothic);
}
}
void gfxPlatformGtk::ReadSystemFontList(
InfallibleTArray<SystemFontListEntry>* retValue) {
gfxFcPlatformFontList::PlatformFontList()->ReadSystemFontList(retValue);
}
gfxPlatformFontList* gfxPlatformGtk::CreatePlatformFontList() {
gfxPlatformFontList* list = new gfxFcPlatformFontList();
if (NS_SUCCEEDED(list->InitFontList())) {
return list;
}
gfxPlatformFontList::Shutdown();
return nullptr;
}
gfxFontGroup* gfxPlatformGtk::CreateFontGroup(
const FontFamilyList& aFontFamilyList, const gfxFontStyle* aStyle,
gfxTextPerfMetrics* aTextPerf, gfxUserFontSet* aUserFontSet,
gfxFloat aDevToCssSize) {
return new gfxFontGroup(aFontFamilyList, aStyle, aTextPerf, aUserFontSet,
aDevToCssSize);
}
FT_Library gfxPlatformGtk::GetFTLibrary() {
return gfxFcPlatformFontList::GetFTLibrary();
}
static int32_t sDPI = 0;
int32_t gfxPlatformGtk::GetFontScaleDPI() {
if (!sDPI) {
// Make sure init is run so we have a resolution
GdkScreen* screen = gdk_screen_get_default();
gtk_settings_get_for_screen(screen);
sDPI = int32_t(round(gdk_screen_get_resolution(screen)));
if (sDPI <= 0) {
// Fall back to something sane
sDPI = 96;
}
}
return sDPI;
}
double gfxPlatformGtk::GetFontScaleFactor() {
// Integer scale factors work well with GTK window scaling, image scaling,
// and pixel alignment, but there is a range where 1 is too small and 2 is
// too big. An additional step of 1.5 is added because this is common
// scale on WINNT and at this ratio the advantages of larger rendering
// outweigh the disadvantages from scaling and pixel mis-alignment.
int32_t dpi = GetFontScaleDPI();
if (dpi < 132) {
return 1.0;
}
if (dpi < 168) {
return 1.5;
}
return round(dpi / 96.0);
}
bool gfxPlatformGtk::UseImageOffscreenSurfaces() {
return GetDefaultContentBackend() != mozilla::gfx::BackendType::CAIRO ||
gfxPrefs::UseImageOffscreenSurfaces();
}
gfxImageFormat gfxPlatformGtk::GetOffscreenFormat() {
// Make sure there is a screen
GdkScreen* screen = gdk_screen_get_default();
if (screen && gdk_visual_get_depth(gdk_visual_get_system()) == 16) {
return SurfaceFormat::R5G6B5_UINT16;
}
return SurfaceFormat::X8R8G8B8_UINT32;
}
void gfxPlatformGtk::FontsPrefsChanged(const char* aPref) {
// only checking for generic substitions, pass other changes up
if (strcmp(GFX_PREF_MAX_GENERIC_SUBSTITUTIONS, aPref)) {
gfxPlatform::FontsPrefsChanged(aPref);
return;
}
mMaxGenericSubstitutions = UNINITIALIZED_VALUE;
gfxFcPlatformFontList* pfl = gfxFcPlatformFontList::PlatformFontList();
pfl->ClearGenericMappings();
FlushFontAndWordCaches();
}
uint32_t gfxPlatformGtk::MaxGenericSubstitions() {
if (mMaxGenericSubstitutions == UNINITIALIZED_VALUE) {
mMaxGenericSubstitutions =
Preferences::GetInt(GFX_PREF_MAX_GENERIC_SUBSTITUTIONS, 3);
if (mMaxGenericSubstitutions < 0) {
mMaxGenericSubstitutions = 3;
}
}
return uint32_t(mMaxGenericSubstitutions);
}
bool gfxPlatformGtk::AccelerateLayersByDefault() {
return gfxPrefs::WebRenderAll();
}
void gfxPlatformGtk::GetPlatformCMSOutputProfile(void*& mem, size_t& size) {
mem = nullptr;
size = 0;
#ifdef MOZ_X11
GdkDisplay* display = gdk_display_get_default();
if (!GDK_IS_X11_DISPLAY(display)) return;
const char EDID1_ATOM_NAME[] = "XFree86_DDC_EDID1_RAWDATA";
const char ICC_PROFILE_ATOM_NAME[] = "_ICC_PROFILE";
Atom edidAtom, iccAtom;
Display* dpy = GDK_DISPLAY_XDISPLAY(display);
// In xpcshell tests, we never initialize X and hence don't have a Display.
// In this case, there's no output colour management to be done, so we just
// return with nullptr.
if (!dpy) return;
Window root = gdk_x11_get_default_root_xwindow();
Atom retAtom;
int retFormat;
unsigned long retLength, retAfter;
unsigned char* retProperty;
iccAtom = XInternAtom(dpy, ICC_PROFILE_ATOM_NAME, TRUE);
if (iccAtom) {
// read once to get size, once for the data
if (Success == XGetWindowProperty(dpy, root, iccAtom, 0,
INT_MAX /* length */, False,
AnyPropertyType, &retAtom, &retFormat,
&retLength, &retAfter, &retProperty)) {
if (retLength > 0) {
void* buffer = malloc(retLength);
if (buffer) {
memcpy(buffer, retProperty, retLength);
mem = buffer;
size = retLength;
}
}
XFree(retProperty);
if (size > 0) {
#ifdef DEBUG_tor
fprintf(stderr, "ICM profile read from %s successfully\n",
ICC_PROFILE_ATOM_NAME);
#endif
return;
}
}
}
edidAtom = XInternAtom(dpy, EDID1_ATOM_NAME, TRUE);
if (edidAtom) {
if (Success == XGetWindowProperty(dpy, root, edidAtom, 0, 32, False,
AnyPropertyType, &retAtom, &retFormat,
&retLength, &retAfter, &retProperty)) {
double gamma;
qcms_CIE_xyY whitePoint;
qcms_CIE_xyYTRIPLE primaries;
if (retLength != 128) {
#ifdef DEBUG_tor
fprintf(stderr, "Short EDID data\n");
#endif
return;
}
// Format documented in "VESA E-EDID Implementation Guide"
gamma = (100 + retProperty[0x17]) / 100.0;
whitePoint.x =
((retProperty[0x21] << 2) | (retProperty[0x1a] >> 2 & 3)) / 1024.0;
whitePoint.y =
((retProperty[0x22] << 2) | (retProperty[0x1a] >> 0 & 3)) / 1024.0;
whitePoint.Y = 1.0;
primaries.red.x =
((retProperty[0x1b] << 2) | (retProperty[0x19] >> 6 & 3)) / 1024.0;
primaries.red.y =
((retProperty[0x1c] << 2) | (retProperty[0x19] >> 4 & 3)) / 1024.0;
primaries.red.Y = 1.0;
primaries.green.x =
((retProperty[0x1d] << 2) | (retProperty[0x19] >> 2 & 3)) / 1024.0;
primaries.green.y =
((retProperty[0x1e] << 2) | (retProperty[0x19] >> 0 & 3)) / 1024.0;
primaries.green.Y = 1.0;
primaries.blue.x =
((retProperty[0x1f] << 2) | (retProperty[0x1a] >> 6 & 3)) / 1024.0;
primaries.blue.y =
((retProperty[0x20] << 2) | (retProperty[0x1a] >> 4 & 3)) / 1024.0;
primaries.blue.Y = 1.0;
XFree(retProperty);
#ifdef DEBUG_tor
fprintf(stderr, "EDID gamma: %f\n", gamma);
fprintf(stderr, "EDID whitepoint: %f %f %f\n", whitePoint.x, whitePoint.y,
whitePoint.Y);
fprintf(stderr, "EDID primaries: [%f %f %f] [%f %f %f] [%f %f %f]\n",
primaries.Red.x, primaries.Red.y, primaries.Red.Y,
primaries.Green.x, primaries.Green.y, primaries.Green.Y,
primaries.Blue.x, primaries.Blue.y, primaries.Blue.Y);
#endif
qcms_data_create_rgb_with_gamma(whitePoint, primaries, gamma, &mem,
&size);
#ifdef DEBUG_tor
if (size > 0) {
fprintf(stderr, "ICM profile read from %s successfully\n",
EDID1_ATOM_NAME);
}
#endif
}
}
#endif
}
bool gfxPlatformGtk::CheckVariationFontSupport() {
// Although there was some variation/multiple-master support in FreeType
// in older versions, it seems too incomplete/unstable for us to use
// until at least 2.7.1.
FT_Int major, minor, patch;
FT_Library_Version(GetFTLibrary(), &major, &minor, &patch);
return major * 1000000 + minor * 1000 + patch >= 2007001;
}
#ifdef MOZ_X11
class GtkVsyncSource final : public VsyncSource {
public:
GtkVsyncSource() {
MOZ_ASSERT(NS_IsMainThread());
mGlobalDisplay = new GLXDisplay();
}
virtual ~GtkVsyncSource() { MOZ_ASSERT(NS_IsMainThread()); }
virtual Display& GetGlobalDisplay() override { return *mGlobalDisplay; }
class GLXDisplay final : public VsyncSource::Display {
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GLXDisplay)
public:
GLXDisplay()
: mGLContext(nullptr),
mXDisplay(nullptr),
mSetupLock("GLXVsyncSetupLock"),
mVsyncThread("GLXVsyncThread"),
mVsyncTask(nullptr),
mVsyncEnabledLock("GLXVsyncEnabledLock"),
mVsyncEnabled(false)
#ifdef MOZ_WAYLAND
,
mIsWaylandDisplay(false)
#endif
{
}
// Sets up the display's GL context on a worker thread.
// Required as GLContexts may only be used by the creating thread.
// Returns true if setup was a success.
bool Setup() {
MonitorAutoLock lock(mSetupLock);
MOZ_ASSERT(NS_IsMainThread());
if (!mVsyncThread.Start()) return false;
RefPtr<Runnable> vsyncSetup =
NewRunnableMethod("GtkVsyncSource::GLXDisplay::SetupGLContext", this,
&GLXDisplay::SetupGLContext);
mVsyncThread.message_loop()->PostTask(vsyncSetup.forget());
// Wait until the setup has completed.
lock.Wait();
return mGLContext != nullptr;
}
#ifdef MOZ_WAYLAND
bool SetupWayland() {
MonitorAutoLock lock(mSetupLock);
MOZ_ASSERT(NS_IsMainThread());
mIsWaylandDisplay = true;
return mVsyncThread.Start();
}
#endif
// Called on the Vsync thread to setup the GL context.
void SetupGLContext() {
MonitorAutoLock lock(mSetupLock);
MOZ_ASSERT(!NS_IsMainThread());
MOZ_ASSERT(!mGLContext, "GLContext already setup!");
// Create video sync timer on a separate Display to prevent locking the
// main thread X display.
mXDisplay = XOpenDisplay(nullptr);
if (!mXDisplay) {
lock.NotifyAll();
return;
}
// Most compositors wait for vsync events on the root window.
Window root = DefaultRootWindow(mXDisplay);
int screen = DefaultScreen(mXDisplay);
ScopedXFree<GLXFBConfig> cfgs;
GLXFBConfig config;
int visid;
bool forWebRender = false;
if (!gl::GLContextGLX::FindFBConfigForWindow(
mXDisplay, screen, root, &cfgs, &config, &visid, forWebRender)) {
lock.NotifyAll();
return;
}
mGLContext = gl::GLContextGLX::CreateGLContext(
gl::CreateContextFlags::NONE, gl::SurfaceCaps::Any(), false,
mXDisplay, root, config, false, nullptr);
if (!mGLContext) {
lock.NotifyAll();
return;
}
mGLContext->MakeCurrent();
// Test that SGI_video_sync lets us get the counter.
unsigned int syncCounter = 0;
if (gl::sGLXLibrary.fGetVideoSync(&syncCounter) != 0) {
mGLContext = nullptr;
}
lock.NotifyAll();
}
virtual void EnableVsync() override {
MOZ_ASSERT(NS_IsMainThread());
#if !defined(MOZ_WAYLAND)
MOZ_ASSERT(mGLContext, "GLContext not setup!");
#endif
MonitorAutoLock lock(mVsyncEnabledLock);
if (mVsyncEnabled) {
return;
}
mVsyncEnabled = true;
// If the task has not nulled itself out, it hasn't yet realized
// that vsync was disabled earlier, so continue its execution.
if (!mVsyncTask) {
mVsyncTask =
NewRunnableMethod("GtkVsyncSource::GLXDisplay::RunVsync", this,
#if defined(MOZ_WAYLAND)
mIsWaylandDisplay ? &GLXDisplay::RunVsyncWayland :
#endif
&GLXDisplay::RunVsync);
RefPtr<Runnable> addrefedTask = mVsyncTask;
mVsyncThread.message_loop()->PostTask(addrefedTask.forget());
}
}
virtual void DisableVsync() override {
MonitorAutoLock lock(mVsyncEnabledLock);
mVsyncEnabled = false;
}
virtual bool IsVsyncEnabled() override {
MonitorAutoLock lock(mVsyncEnabledLock);
return mVsyncEnabled;
}
virtual void Shutdown() override {
MOZ_ASSERT(NS_IsMainThread());
DisableVsync();
// Cleanup thread-specific resources before shutting down.
RefPtr<Runnable> shutdownTask = NewRunnableMethod(
"GtkVsyncSource::GLXDisplay::Cleanup", this, &GLXDisplay::Cleanup);
mVsyncThread.message_loop()->PostTask(shutdownTask.forget());
// Stop, waiting for the cleanup task to finish execution.
mVsyncThread.Stop();
}
private:
virtual ~GLXDisplay() {}
void RunVsync() {
MOZ_ASSERT(!NS_IsMainThread());
mGLContext->MakeCurrent();
unsigned int syncCounter = 0;
gl::sGLXLibrary.fGetVideoSync(&syncCounter);
for (;;) {
{
MonitorAutoLock lock(mVsyncEnabledLock);
if (!mVsyncEnabled) {
mVsyncTask = nullptr;
return;
}
}
TimeStamp lastVsync = TimeStamp::Now();
bool useSoftware = false;
// Wait until the video sync counter reaches the next value by waiting
// until the parity of the counter value changes.
unsigned int nextSync = syncCounter + 1;
int status;
if ((status = gl::sGLXLibrary.fWaitVideoSync(2, nextSync % 2,
&syncCounter)) != 0) {
gfxWarningOnce() << "glXWaitVideoSync returned " << status;
useSoftware = true;
}
if (syncCounter == (nextSync - 1)) {
gfxWarningOnce()
<< "glXWaitVideoSync failed to increment the sync counter.";
useSoftware = true;
}
if (useSoftware) {
double remaining =
(1000.f / 60.f) - (TimeStamp::Now() - lastVsync).ToMilliseconds();
if (remaining > 0) {
PlatformThread::Sleep(remaining);
}
}
lastVsync = TimeStamp::Now();
NotifyVsync(lastVsync);
}
}
#ifdef MOZ_WAYLAND
/* VSync on Wayland is tricky as we can get only "last VSync" event signal.
* That means we should draw next frame at "last Vsync + frame delay" time.
*/
void RunVsyncWayland() {
MOZ_ASSERT(!NS_IsMainThread());
for (;;) {
{
MonitorAutoLock lock(mVsyncEnabledLock);
if (!mVsyncEnabled) {
mVsyncTask = nullptr;
return;
}
}
gint64 lastVsync = gfxPlatformGtk::GetPlatform()->GetWaylandLastVsync();
gint64 currTime = (g_get_monotonic_time() / 1000);
gint64 remaining =
gfxPlatformGtk::GetPlatform()->GetWaylandFrameDelay() -
(currTime - lastVsync);
if (remaining > 0) {
PlatformThread::Sleep(remaining);
} else {
// Time from last HW Vsync is longer than our frame delay,
// use our approximation then.
gfxPlatformGtk::GetPlatform()->SetWaylandLastVsync(currTime);
}
NotifyVsync(TimeStamp::Now());
}
}
#endif
void Cleanup() {
MOZ_ASSERT(!NS_IsMainThread());
mGLContext = nullptr;
if (mXDisplay) XCloseDisplay(mXDisplay);
}
// Owned by the vsync thread.
RefPtr<gl::GLContextGLX> mGLContext;
_XDisplay* mXDisplay;
Monitor mSetupLock;
base::Thread mVsyncThread;
RefPtr<Runnable> mVsyncTask;
Monitor mVsyncEnabledLock;
bool mVsyncEnabled;
#ifdef MOZ_WAYLAND
bool mIsWaylandDisplay;
#endif
};
private:
// We need a refcounted VsyncSource::Display to use chromium IPC runnables.
RefPtr<GLXDisplay> mGlobalDisplay;
};
already_AddRefed<gfx::VsyncSource> gfxPlatformGtk::CreateHardwareVsyncSource() {
#ifdef MOZ_WAYLAND
if (!GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
RefPtr<VsyncSource> vsyncSource = new GtkVsyncSource();
VsyncSource::Display& display = vsyncSource->GetGlobalDisplay();
static_cast<GtkVsyncSource::GLXDisplay&>(display).SetupWayland();
return vsyncSource.forget();
}
#endif
// Only use GLX vsync when the OpenGL compositor is being used.
// The extra cost of initializing a GLX context while blocking the main
// thread is not worth it when using basic composition.
if (gfxConfig::IsEnabled(Feature::HW_COMPOSITING)) {
if (gl::sGLXLibrary.SupportsVideoSync()) {
RefPtr<VsyncSource> vsyncSource = new GtkVsyncSource();
VsyncSource::Display& display = vsyncSource->GetGlobalDisplay();
if (!static_cast<GtkVsyncSource::GLXDisplay&>(display).Setup()) {
NS_WARNING(
"Failed to setup GLContext, falling back to software vsync.");
return gfxPlatform::CreateHardwareVsyncSource();
}
return vsyncSource.forget();
}
NS_WARNING("SGI_video_sync unsupported. Falling back to software vsync.");
}
return gfxPlatform::CreateHardwareVsyncSource();
}
#endif
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