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tenfourfox/gfx/thebes/gfxPlatform.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/. */
#include "mozilla/layers/AsyncTransactionTracker.h" // for AsyncTransactionTracker
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/CompositorParent.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/SharedBufferManagerChild.h"
#include "mozilla/layers/ISurfaceAllocator.h" // for GfxMemoryImageReporter
#include "mozilla/Telemetry.h"
#include "mozilla/Logging.h"
#include "mozilla/Services.h"
#include "prprf.h"
#include "gfxPlatform.h"
#include "gfxPrefs.h"
#include "gfxEnv.h"
#include "gfxTextRun.h"
#include "gfxVR.h"
#ifdef XP_WIN
#include <process.h>
#define getpid _getpid
#else
#include <unistd.h>
#endif
#include "nsXULAppAPI.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#if defined(XP_WIN)
#include "gfxWindowsPlatform.h"
#elif defined(XP_MACOSX)
#include "gfxPlatformMac.h"
#include "gfxQuartzSurface.h"
#elif defined(MOZ_WIDGET_GTK)
#include "gfxPlatformGtk.h"
#elif defined(MOZ_WIDGET_QT)
#include "gfxQtPlatform.h"
#elif defined(ANDROID)
#include "gfxAndroidPlatform.h"
#endif
#ifdef XP_WIN
#include "mozilla/WindowsVersion.h"
#endif
#include "nsGkAtoms.h"
#include "gfxPlatformFontList.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "nsUnicodeProperties.h"
#include "harfbuzz/hb.h"
#include "gfxGraphiteShaper.h"
#include "gfx2DGlue.h"
#include "gfxGradientCache.h"
#include "gfxUtils.h" // for NextPowerOfTwo
#include "nsUnicodeRange.h"
#include "nsServiceManagerUtils.h"
#include "nsTArray.h"
#include "nsILocaleService.h"
#include "nsIObserverService.h"
#include "nsIScreenManager.h"
#include "MainThreadUtils.h"
#ifdef MOZ_CRASHREPORTER
#include "nsExceptionHandler.h"
#endif
#include "nsWeakReference.h"
#include "cairo.h"
#include "qcms.h"
#include "imgITools.h"
#include "plstr.h"
#include "nsCRT.h"
#include "GLContext.h"
#include "GLContextProvider.h"
#include "mozilla/gfx/Logging.h"
#if defined(MOZ_WIDGET_GTK)
#include "gfxPlatformGtk.h" // xxx - for UseFcFontList
#endif
#ifdef MOZ_WIDGET_ANDROID
#include "TexturePoolOGL.h"
#endif
#ifdef MOZ_WIDGET_GONK
#include "mozilla/layers/GrallocTextureHost.h"
#endif
#include "mozilla/Hal.h"
#ifdef USE_SKIA
# ifdef __GNUC__
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wshadow"
# endif
# include "skia/include/core/SkGraphics.h"
# ifdef USE_SKIA_GPU
# include "skia/include/gpu/GrContext.h"
# include "skia/include/gpu/gl/GrGLInterface.h"
# include "SkiaGLGlue.h"
# endif
# ifdef __GNUC__
# pragma GCC diagnostic pop // -Wshadow
# endif
#endif
#if !defined(USE_SKIA) || !defined(USE_SKIA_GPU)
class mozilla::gl::SkiaGLGlue : public GenericAtomicRefCounted {
};
#endif
#include "mozilla/Preferences.h"
#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include "mozilla/Mutex.h"
#include "nsAlgorithm.h"
#include "nsIGfxInfo.h"
#include "nsIXULRuntime.h"
#include "VsyncSource.h"
#include "SoftwareVsyncSource.h"
#include "nscore.h" // for NS_FREE_PERMANENT_DATA
#include "mozilla/dom/ContentChild.h"
namespace mozilla {
namespace layers {
#ifdef MOZ_WIDGET_GONK
void InitGralloc();
#endif
void ShutdownTileCache();
} // namespace layers
} // namespace mozilla
using namespace mozilla;
using namespace mozilla::layers;
using namespace mozilla::gl;
gfxPlatform *gPlatform = nullptr;
static bool gEverInitialized = false;
static Mutex* gGfxPlatformPrefsLock = nullptr;
// These two may point to the same profile
static qcms_profile *gCMSOutputProfile = nullptr;
static qcms_profile *gCMSsRGBProfile = nullptr;
static qcms_transform *gCMSRGBTransform = nullptr;
static qcms_transform *gCMSInverseRGBTransform = nullptr;
static qcms_transform *gCMSRGBATransform = nullptr;
static bool gCMSInitialized = false;
static eCMSMode gCMSMode = eCMSMode_Off;
static void ShutdownCMS();
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/SourceSurfaceCairo.h"
using namespace mozilla::gfx;
void InitLayersAccelerationPrefs();
/* Class to listen for pref changes so that chrome code can dynamically
force sRGB as an output profile. See Bug #452125. */
class SRGBOverrideObserver final : public nsIObserver,
public nsSupportsWeakReference
{
~SRGBOverrideObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
/// This override of the LogForwarder, initially used for the critical graphics
/// errors, is sending the log to the crash annotations as well, but only
/// if the capacity set with the method below is >= 2. We always retain the
/// very first critical message, and the latest capacity-1 messages are
/// rotated through. Note that we don't expect the total number of times
/// this gets called to be large - it is meant for critical errors only.
class CrashStatsLogForwarder: public mozilla::gfx::LogForwarder
{
public:
explicit CrashStatsLogForwarder(const char* aKey);
virtual void Log(const std::string& aString) override;
virtual void CrashAction(LogReason aReason) override;
virtual std::vector<std::pair<int32_t,std::string> > StringsVectorCopy() override;
void SetCircularBufferSize(uint32_t aCapacity);
private:
// Helpers for the Log()
bool UpdateStringsVector(const std::string& aString);
void UpdateCrashReport();
private:
std::vector<std::pair<int32_t,std::string> > mBuffer;
nsCString mCrashCriticalKey;
uint32_t mMaxCapacity;
int32_t mIndex;
Mutex mMutex;
};
CrashStatsLogForwarder::CrashStatsLogForwarder(const char* aKey)
: mBuffer()
, mCrashCriticalKey(aKey)
, mMaxCapacity(0)
, mIndex(-1)
, mMutex("CrashStatsLogForwarder")
{
}
void CrashStatsLogForwarder::SetCircularBufferSize(uint32_t aCapacity)
{
MutexAutoLock lock(mMutex);
mMaxCapacity = aCapacity;
mBuffer.reserve(static_cast<size_t>(aCapacity));
}
std::vector<std::pair<int32_t,std::string> >
CrashStatsLogForwarder::StringsVectorCopy()
{
MutexAutoLock lock(mMutex);
return mBuffer;
}
bool
CrashStatsLogForwarder::UpdateStringsVector(const std::string& aString)
{
// We want at least the first one and the last one. Otherwise, no point.
if (mMaxCapacity < 2) {
return false;
}
mIndex += 1;
MOZ_ASSERT(mIndex >= 0);
// index will count 0, 1, 2, ..., max-1, 1, 2, ..., max-1, 1, 2, ...
int32_t index = mIndex ? (mIndex-1) % (mMaxCapacity-1) + 1 : 0;
MOZ_ASSERT(index >= 0 && index < (int32_t)mMaxCapacity);
MOZ_ASSERT(index <= mIndex && index <= (int32_t)mBuffer.size());
// Checking for index >= mBuffer.size(), rather than index == mBuffer.size()
// just out of paranoia, but we know index <= mBuffer.size().
std::pair<int32_t,std::string> newEntry(mIndex,aString);
if (index >= static_cast<int32_t>(mBuffer.size())) {
mBuffer.push_back(newEntry);
} else {
mBuffer[index] = newEntry;
}
return true;
}
void CrashStatsLogForwarder::UpdateCrashReport()
{
std::stringstream message;
for(std::vector<std::pair<int32_t, std::string> >::iterator it = mBuffer.begin(); it != mBuffer.end(); ++it) {
message << "|[" << (*it).first << "]" << (*it).second;
}
#ifdef MOZ_CRASHREPORTER
nsCString reportString(message.str().c_str());
nsresult annotated = CrashReporter::AnnotateCrashReport(mCrashCriticalKey, reportString);
#else
nsresult annotated = NS_ERROR_NOT_IMPLEMENTED;
#endif
if (annotated != NS_OK) {
printf("Crash Annotation %s: %s",
mCrashCriticalKey.get(), message.str().c_str());
}
}
void CrashStatsLogForwarder::Log(const std::string& aString)
{
MutexAutoLock lock(mMutex);
if (UpdateStringsVector(aString)) {
UpdateCrashReport();
}
}
class CrashTelemetryEvent : public nsRunnable
{
virtual ~CrashTelemetryEvent() {}
NS_DECL_ISUPPORTS_INHERITED
explicit CrashTelemetryEvent(uint32_t aReason) : mReason(aReason) {}
NS_IMETHOD Run() override {
MOZ_ASSERT(NS_IsMainThread());
Telemetry::Accumulate(Telemetry::GFX_CRASH, mReason);
return NS_OK;
}
protected:
uint32_t mReason;
};
NS_IMPL_ISUPPORTS_INHERITED0(CrashTelemetryEvent, nsRunnable);
void
CrashStatsLogForwarder::CrashAction(LogReason aReason)
{
#ifndef RELEASE_BUILD
// Non-release builds crash by default, but will use telemetry
// if this environment variable is present.
static bool useTelemetry = gfxEnv::GfxDevCrashTelemetry();
#else
// Release builds use telemetry by default, but will crash instead
// if this environment variable is present.
static bool useTelemetry = !gfxEnv::GfxDevCrashMozCrash();
#endif
if (useTelemetry) {
// The callers need to assure that aReason is in the range
// that the telemetry call below supports.
if (NS_IsMainThread()) {
Telemetry::Accumulate(Telemetry::GFX_CRASH, (uint32_t)aReason);
} else {
nsCOMPtr<nsIRunnable> r1 = new CrashTelemetryEvent((uint32_t)aReason);
NS_DispatchToMainThread(r1);
}
} else {
// ignoring aReason, we can get the information we need from the stack
MOZ_CRASH("GFX_CRASH");
}
}
NS_IMPL_ISUPPORTS(SRGBOverrideObserver, nsIObserver, nsISupportsWeakReference)
#define GFX_DOWNLOADABLE_FONTS_ENABLED "gfx.downloadable_fonts.enabled"
#define GFX_PREF_FALLBACK_USE_CMAPS "gfx.font_rendering.fallback.always_use_cmaps"
#define GFX_PREF_OPENTYPE_SVG "gfx.font_rendering.opentype_svg.enabled"
#define GFX_PREF_WORD_CACHE_CHARLIMIT "gfx.font_rendering.wordcache.charlimit"
#define GFX_PREF_WORD_CACHE_MAXENTRIES "gfx.font_rendering.wordcache.maxentries"
#define GFX_PREF_GRAPHITE_SHAPING "gfx.font_rendering.graphite.enabled"
#define BIDI_NUMERAL_PREF "bidi.numeral"
#define GFX_PREF_CMS_FORCE_SRGB "gfx.color_management.force_srgb"
NS_IMETHODIMP
SRGBOverrideObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t* someData)
{
NS_ASSERTION(NS_strcmp(someData,
MOZ_UTF16(GFX_PREF_CMS_FORCE_SRGB)) == 0,
"Restarting CMS on wrong pref!");
ShutdownCMS();
// Update current cms profile.
gfxPlatform::CreateCMSOutputProfile();
return NS_OK;
}
static const char* kObservedPrefs[] = {
"gfx.downloadable_fonts.",
"gfx.font_rendering.",
BIDI_NUMERAL_PREF,
nullptr
};
class FontPrefsObserver final : public nsIObserver
{
~FontPrefsObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS(FontPrefsObserver, nsIObserver)
NS_IMETHODIMP
FontPrefsObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *someData)
{
if (!someData) {
NS_ERROR("font pref observer code broken");
return NS_ERROR_UNEXPECTED;
}
NS_ASSERTION(gfxPlatform::GetPlatform(), "the singleton instance has gone");
gfxPlatform::GetPlatform()->FontsPrefsChanged(NS_ConvertUTF16toUTF8(someData).get());
return NS_OK;
}
class MemoryPressureObserver final : public nsIObserver
{
~MemoryPressureObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS(MemoryPressureObserver, nsIObserver)
NS_IMETHODIMP
MemoryPressureObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *someData)
{
NS_ASSERTION(strcmp(aTopic, "memory-pressure") == 0, "unexpected event topic");
Factory::PurgeAllCaches();
gfxGradientCache::PurgeAllCaches();
gfxPlatform::GetPlatform()->PurgeSkiaCache();
return NS_OK;
}
gfxPlatform::gfxPlatform()
: mTileWidth(-1)
, mTileHeight(-1)
, mAzureCanvasBackendCollector(this, &gfxPlatform::GetAzureBackendInfo)
, mApzSupportCollector(this, &gfxPlatform::GetApzSupportInfo)
, mCompositorBackend(layers::LayersBackend::LAYERS_NONE)
, mScreenDepth(0)
{
mAllowDownloadableFonts = UNINITIALIZED_VALUE;
mFallbackUsesCmaps = UNINITIALIZED_VALUE;
mWordCacheCharLimit = UNINITIALIZED_VALUE;
mWordCacheMaxEntries = UNINITIALIZED_VALUE;
mGraphiteShapingEnabled = UNINITIALIZED_VALUE;
mOpenTypeSVGEnabled = UNINITIALIZED_VALUE;
mBidiNumeralOption = UNINITIALIZED_VALUE;
mSkiaGlue = nullptr;
uint32_t canvasMask = BackendTypeBit(BackendType::CAIRO) | BackendTypeBit(BackendType::SKIA);
uint32_t contentMask = BackendTypeBit(BackendType::CAIRO);
InitBackendPrefs(canvasMask, BackendType::CAIRO,
contentMask, BackendType::CAIRO);
mTotalSystemMemory = mozilla::hal::GetTotalSystemMemory();
// give HMDs a chance to be initialized very early on
VRHMDManager::ManagerInit();
}
gfxPlatform*
gfxPlatform::GetPlatform()
{
if (!gPlatform) {
Init();
}
return gPlatform;
}
bool
gfxPlatform::Initialized()
{
return !!gPlatform;
}
void RecordingPrefChanged(const char *aPrefName, void *aClosure)
{
if (Preferences::GetBool("gfx.2d.recording", false)) {
nsAutoCString fileName;
nsAdoptingString prefFileName = Preferences::GetString("gfx.2d.recordingfile");
if (prefFileName) {
fileName.Append(NS_ConvertUTF16toUTF8(prefFileName));
} else {
nsCOMPtr<nsIFile> tmpFile;
if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tmpFile)))) {
return;
}
fileName.AppendPrintf("moz2drec_%i_%i.aer", XRE_GetProcessType(), getpid());
nsresult rv = tmpFile->AppendNative(fileName);
if (NS_FAILED(rv))
return;
rv = tmpFile->GetNativePath(fileName);
if (NS_FAILED(rv))
return;
}
gPlatform->mRecorder = Factory::CreateEventRecorderForFile(fileName.BeginReading());
printf_stderr("Recording to %s\n", fileName.get());
Factory::SetGlobalEventRecorder(gPlatform->mRecorder);
} else {
Factory::SetGlobalEventRecorder(nullptr);
}
}
void
gfxPlatform::Init()
{
MOZ_RELEASE_ASSERT(NS_IsMainThread());
if (gEverInitialized) {
NS_RUNTIMEABORT("Already started???");
}
gEverInitialized = true;
// Initialize the preferences by creating the singleton.
gfxPrefs::GetSingleton();
auto fwd = new CrashStatsLogForwarder("GraphicsCriticalError");
fwd->SetCircularBufferSize(gfxPrefs::GfxLoggingCrashLength());
mozilla::gfx::Config cfg;
cfg.mLogForwarder = fwd;
cfg.mMaxTextureSize = gfxPrefs::MaxTextureSize();
cfg.mMaxAllocSize = gfxPrefs::MaxAllocSize();
gfx::Factory::Init(cfg);
gGfxPlatformPrefsLock = new Mutex("gfxPlatform::gGfxPlatformPrefsLock");
/* Initialize the GfxInfo service.
* Note: we can't call functions on GfxInfo that depend
* on gPlatform until after it has been initialized
* below. GfxInfo initialization annotates our
* crash reports so we want to do it before
* we try to load any drivers and do device detection
* incase that code crashes. See bug #591561. */
nsCOMPtr<nsIGfxInfo> gfxInfo;
/* this currently will only succeed on Windows */
gfxInfo = services::GetGfxInfo();
#if defined(XP_WIN)
gPlatform = new gfxWindowsPlatform;
#elif defined(XP_MACOSX)
gPlatform = new gfxPlatformMac;
#elif defined(MOZ_WIDGET_GTK)
gPlatform = new gfxPlatformGtk;
#elif defined(MOZ_WIDGET_QT)
gPlatform = new gfxQtPlatform;
#elif defined(ANDROID)
gPlatform = new gfxAndroidPlatform;
#else
#error "No gfxPlatform implementation available"
#endif
#ifdef MOZ_GL_DEBUG
GLContext::StaticInit();
#endif
InitLayersAccelerationPrefs();
InitLayersIPC();
gPlatform->PopulateScreenInfo();
gPlatform->ComputeTileSize();
nsresult rv;
bool usePlatformFontList = true;
#if defined(MOZ_WIDGET_GTK)
usePlatformFontList = gfxPlatformGtk::UseFcFontList();
#elif defined(MOZ_WIDGET_QT)
usePlatformFontList = false;
#endif
if (usePlatformFontList) {
rv = gfxPlatformFontList::Init();
if (NS_FAILED(rv)) {
NS_RUNTIMEABORT("Could not initialize gfxPlatformFontList");
}
}
gPlatform->mScreenReferenceSurface =
gPlatform->CreateOffscreenSurface(IntSize(1, 1),
gfxImageFormat::ARGB32);
if (!gPlatform->mScreenReferenceSurface) {
NS_RUNTIMEABORT("Could not initialize mScreenReferenceSurface");
}
gPlatform->mScreenReferenceDrawTarget =
gPlatform->CreateOffscreenContentDrawTarget(IntSize(1, 1),
SurfaceFormat::B8G8R8A8);
if (!gPlatform->mScreenReferenceDrawTarget) {
NS_RUNTIMEABORT("Could not initialize mScreenReferenceDrawTarget");
}
rv = gfxFontCache::Init();
if (NS_FAILED(rv)) {
NS_RUNTIMEABORT("Could not initialize gfxFontCache");
}
/* Create and register our CMS Override observer. */
gPlatform->mSRGBOverrideObserver = new SRGBOverrideObserver();
Preferences::AddWeakObserver(gPlatform->mSRGBOverrideObserver, GFX_PREF_CMS_FORCE_SRGB);
gPlatform->mFontPrefsObserver = new FontPrefsObserver();
Preferences::AddStrongObservers(gPlatform->mFontPrefsObserver, kObservedPrefs);
GLContext::PlatformStartup();
#ifdef MOZ_WIDGET_ANDROID
// Texture pool init
TexturePoolOGL::Init();
#endif
#ifdef MOZ_WIDGET_GONK
mozilla::layers::InitGralloc();
#endif
Preferences::RegisterCallbackAndCall(RecordingPrefChanged, "gfx.2d.recording", nullptr);
CreateCMSOutputProfile();
// Listen to memory pressure event so we can purge DrawTarget caches
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
gPlatform->mMemoryPressureObserver = new MemoryPressureObserver();
obs->AddObserver(gPlatform->mMemoryPressureObserver, "memory-pressure", false);
}
// Request the imgITools service, implicitly initializing ImageLib.
nsCOMPtr<imgITools> imgTools = do_GetService("@mozilla.org/image/tools;1");
if (!imgTools) {
NS_RUNTIMEABORT("Could not initialize ImageLib");
}
RegisterStrongMemoryReporter(new GfxMemoryImageReporter());
if (XRE_IsParentProcess()) {
if (gfxPlatform::ForceSoftwareVsync()) {
gPlatform->mVsyncSource = (gPlatform)->gfxPlatform::CreateHardwareVsyncSource();
} else {
gPlatform->mVsyncSource = gPlatform->CreateHardwareVsyncSource();
}
}
}
static bool sLayersIPCIsUp = false;
void
gfxPlatform::Shutdown()
{
if (!gPlatform) {
return;
}
MOZ_ASSERT(!sLayersIPCIsUp);
// These may be called before the corresponding subsystems have actually
// started up. That's OK, they can handle it.
gfxFontCache::Shutdown();
gfxFontGroup::Shutdown();
gfxGradientCache::Shutdown();
gfxAlphaBoxBlur::ShutdownBlurCache();
gfxGraphiteShaper::Shutdown();
gfxPlatformFontList::Shutdown();
ShutdownTileCache();
// Free the various non-null transforms and loaded profiles
ShutdownCMS();
// In some cases, gPlatform may not be created but Shutdown() called,
// e.g., during xpcshell tests.
if (gPlatform) {
/* Unregister our CMS Override callback. */
NS_ASSERTION(gPlatform->mSRGBOverrideObserver, "mSRGBOverrideObserver has alreay gone");
Preferences::RemoveObserver(gPlatform->mSRGBOverrideObserver, GFX_PREF_CMS_FORCE_SRGB);
gPlatform->mSRGBOverrideObserver = nullptr;
NS_ASSERTION(gPlatform->mFontPrefsObserver, "mFontPrefsObserver has alreay gone");
Preferences::RemoveObservers(gPlatform->mFontPrefsObserver, kObservedPrefs);
gPlatform->mFontPrefsObserver = nullptr;
NS_ASSERTION(gPlatform->mMemoryPressureObserver, "mMemoryPressureObserver has already gone");
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->RemoveObserver(gPlatform->mMemoryPressureObserver, "memory-pressure");
}
gPlatform->mMemoryPressureObserver = nullptr;
gPlatform->mSkiaGlue = nullptr;
gPlatform->mVsyncSource = nullptr;
}
#ifdef MOZ_WIDGET_ANDROID
// Shut down the texture pool
TexturePoolOGL::Shutdown();
#endif
// Shut down the default GL context provider.
GLContextProvider::Shutdown();
#if defined(XP_WIN)
// The above shutdown calls operate on the available context providers on
// most platforms. Windows is a "special snowflake", though, and has three
// context providers available, so we have to shut all of them down.
// We should only support the default GL provider on Windows; then, this
// could go away. Unfortunately, we currently support WGL (the default) for
// WebGL on Optimus.
GLContextProviderEGL::Shutdown();
#endif
// This is a bit iffy - we're assuming that we were the ones that set the
// log forwarder in the Factory, so that it's our responsibility to
// delete it.
delete mozilla::gfx::Factory::GetLogForwarder();
mozilla::gfx::Factory::SetLogForwarder(nullptr);
gfx::Factory::ShutDown();
delete gGfxPlatformPrefsLock;
gfxPrefs::DestroySingleton();
gfxFont::DestroySingletons();
delete gPlatform;
gPlatform = nullptr;
}
/* static */ void
gfxPlatform::InitLayersIPC()
{
if (sLayersIPCIsUp) {
return;
}
sLayersIPCIsUp = true;
AsyncTransactionTrackersHolder::Initialize();
if (XRE_IsParentProcess())
{
mozilla::layers::CompositorParent::StartUp();
#ifdef MOZ_WIDGET_GONK
SharedBufferManagerChild::StartUp();
#endif
mozilla::layers::ImageBridgeChild::StartUp();
}
}
/* static */ void
gfxPlatform::ShutdownLayersIPC()
{
if (!sLayersIPCIsUp) {
return;
}
sLayersIPCIsUp = false;
if (XRE_IsParentProcess())
{
// This must happen after the shutdown of media and widgets, which
// are triggered by the NS_XPCOM_SHUTDOWN_OBSERVER_ID notification.
layers::ImageBridgeChild::ShutDown();
#ifdef MOZ_WIDGET_GONK
layers::SharedBufferManagerChild::ShutDown();
#endif
layers::CompositorParent::ShutDown();
}
}
gfxPlatform::~gfxPlatform()
{
mScreenReferenceSurface = nullptr;
mScreenReferenceDrawTarget = nullptr;
// Clean up any VR stuff
VRHMDManager::ManagerDestroy();
// The cairo folks think we should only clean up in debug builds,
// but we're generally in the habit of trying to shut down as
// cleanly as possible even in production code, so call this
// cairo_debug_* function unconditionally.
//
// because cairo can assert and thus crash on shutdown, don't do this in release builds
#ifdef NS_FREE_PERMANENT_DATA
#ifdef USE_SKIA
// must do Skia cleanup before Cairo cleanup, because Skia may be referencing
// Cairo objects e.g. through SkCairoFTTypeface
SkGraphics::Term();
#endif
#if MOZ_TREE_CAIRO
cairo_debug_reset_static_data();
#endif
#endif
}
cairo_user_data_key_t kDrawTarget;
already_AddRefed<DrawTarget>
gfxPlatform::CreateDrawTargetForSurface(gfxASurface *aSurface, const IntSize& aSize)
{
SurfaceFormat format = aSurface->GetSurfaceFormat();
RefPtr<DrawTarget> drawTarget = Factory::CreateDrawTargetForCairoSurface(aSurface->CairoSurface(), aSize, &format);
if (!drawTarget) {
gfxWarning() << "gfxPlatform::CreateDrawTargetForSurface failed in CreateDrawTargetForCairoSurface";
return nullptr;
}
aSurface->SetData(&kDrawTarget, drawTarget, nullptr);
return drawTarget.forget();
}
// This is a temporary function used by ContentClient to build a DrawTarget
// around the gfxASurface. This should eventually be replaced by plumbing
// the DrawTarget through directly
already_AddRefed<DrawTarget>
gfxPlatform::CreateDrawTargetForUpdateSurface(gfxASurface *aSurface, const IntSize& aSize)
{
#ifdef XP_MACOSX
// this is a bit of a hack that assumes that the buffer associated with the CGContext
// will live around long enough that nothing bad will happen.
if (aSurface->GetType() == gfxSurfaceType::Quartz) {
return Factory::CreateDrawTargetForCairoCGContext(static_cast<gfxQuartzSurface*>(aSurface)->GetCGContext(), aSize);
}
#endif
MOZ_CRASH("GFX: unused function");
return nullptr;
}
cairo_user_data_key_t kSourceSurface;
/**
* Record the backend that was used to construct the SourceSurface.
* When getting the cached SourceSurface for a gfxASurface/DrawTarget pair,
* we check to make sure the DrawTarget's backend matches the backend
* for the cached SourceSurface, and only use it if they match. This
* can avoid expensive and unnecessary readbacks.
*/
struct SourceSurfaceUserData
{
RefPtr<SourceSurface> mSrcSurface;
BackendType mBackendType;
};
void SourceBufferDestroy(void *srcSurfUD)
{
delete static_cast<SourceSurfaceUserData*>(srcSurfUD);
}
UserDataKey kThebesSurface;
struct DependentSourceSurfaceUserData
{
RefPtr<gfxASurface> mSurface;
};
void SourceSurfaceDestroyed(void *aData)
{
delete static_cast<DependentSourceSurfaceUserData*>(aData);
}
void
gfxPlatform::ClearSourceSurfaceForSurface(gfxASurface *aSurface)
{
aSurface->SetData(&kSourceSurface, nullptr, nullptr);
}
/* static */ already_AddRefed<SourceSurface>
gfxPlatform::GetSourceSurfaceForSurface(DrawTarget *aTarget, gfxASurface *aSurface)
{
if (!aSurface->CairoSurface() || aSurface->CairoStatus()) {
return nullptr;
}
if (!aTarget) {
aTarget = gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget();
if (!aTarget) {
return nullptr;
}
}
void *userData = aSurface->GetData(&kSourceSurface);
if (userData) {
SourceSurfaceUserData *surf = static_cast<SourceSurfaceUserData*>(userData);
if (surf->mSrcSurface->IsValid() && surf->mBackendType == aTarget->GetBackendType()) {
RefPtr<SourceSurface> srcSurface(surf->mSrcSurface);
return srcSurface.forget();
}
// We can just continue here as when setting new user data the destroy
// function will be called for the old user data.
}
SurfaceFormat format = aSurface->GetSurfaceFormat();
if (aTarget->GetBackendType() == BackendType::CAIRO) {
// If we're going to be used with a CAIRO DrawTarget, then just create a
// SourceSurfaceCairo since we don't know the underlying type of the CAIRO
// DrawTarget and can't pick a better surface type. Doing this also avoids
// readback of aSurface's surface into memory if, for example, aSurface
// wraps an xlib cairo surface (which can be important to avoid a major
// slowdown).
NativeSurface surf;
surf.mFormat = format;
surf.mType = NativeSurfaceType::CAIRO_SURFACE;
surf.mSurface = aSurface->CairoSurface();
surf.mSize = aSurface->GetSize();
// We return here regardless of whether CreateSourceSurfaceFromNativeSurface
// succeeds or not since we don't expect to be able to do any better below
// if it fails.
//
// Note that the returned SourceSurfaceCairo holds a strong reference to
// the cairo_surface_t* that it wraps, which essencially means it holds a
// strong reference to aSurface since aSurface shares its
// cairo_surface_t*'s reference count variable. As a result we can't cache
// srcBuffer on aSurface (see below) since aSurface would then hold a
// strong reference back to srcBuffer, creating a reference loop and a
// memory leak. Not caching is fine since wrapping is cheap enough (no
// copying) so we can just wrap again next time we're called.
return aTarget->CreateSourceSurfaceFromNativeSurface(surf);
}
RefPtr<SourceSurface> srcBuffer;
// Currently no other DrawTarget types implement CreateSourceSurfaceFromNativeSurface
if (!srcBuffer) {
// If aSurface wraps data, we can create a SourceSurfaceRawData that wraps
// the same data, then optimize it for aTarget:
RefPtr<DataSourceSurface> surf = GetWrappedDataSourceSurface(aSurface);
if (surf) {
srcBuffer = aTarget->OptimizeSourceSurface(surf);
if (srcBuffer == surf) {
// GetWrappedDataSourceSurface returns a SourceSurface that holds a
// strong reference to aSurface since it wraps aSurface's data and
// needs it to stay alive. As a result we can't cache srcBuffer on
// aSurface (below) since aSurface would then hold a strong reference
// back to srcBuffer, creating a reference loop and a memory leak. Not
// caching is fine since wrapping is cheap enough (no copying) so we
// can just wrap again next time we're called.
//
// Note that the check below doesn't catch this since srcBuffer will be a
// SourceSurfaceRawData object (even if aSurface is not a gfxImageSurface
// object), which is why we need this separate check.
return srcBuffer.forget();
}
}
}
if (!srcBuffer) {
MOZ_ASSERT(aTarget->GetBackendType() != BackendType::CAIRO,
"We already tried CreateSourceSurfaceFromNativeSurface with a "
"DrawTargetCairo above");
// We've run out of performant options. We now try creating a SourceSurface
// using a temporary DrawTargetCairo and then optimizing it to aTarget's
// actual type. The CreateSourceSurfaceFromNativeSurface() call will
// likely create a DataSourceSurface (possibly involving copying and/or
// readback), and the OptimizeSourceSurface may well copy again and upload
// to the GPU. So, while this code path is rarely hit, hitting it may be
// very slow.
NativeSurface surf;
surf.mFormat = format;
surf.mType = NativeSurfaceType::CAIRO_SURFACE;
surf.mSurface = aSurface->CairoSurface();
surf.mSize = aSurface->GetSize();
RefPtr<DrawTarget> drawTarget =
Factory::CreateDrawTarget(BackendType::CAIRO, IntSize(1, 1), format);
if (!drawTarget) {
gfxWarning() << "gfxPlatform::GetSourceSurfaceForSurface failed in CreateDrawTarget";
return nullptr;
}
srcBuffer = drawTarget->CreateSourceSurfaceFromNativeSurface(surf);
if (srcBuffer) {
srcBuffer = aTarget->OptimizeSourceSurface(srcBuffer);
}
}
if (!srcBuffer) {
return nullptr;
}
if ((srcBuffer->GetType() == SurfaceType::CAIRO &&
static_cast<SourceSurfaceCairo*>(srcBuffer.get())->GetSurface() ==
aSurface->CairoSurface()) ||
(srcBuffer->GetType() == SurfaceType::CAIRO_IMAGE &&
static_cast<DataSourceSurfaceCairo*>(srcBuffer.get())->GetSurface() ==
aSurface->CairoSurface())) {
// See the "Note that the returned SourceSurfaceCairo..." comment above.
return srcBuffer.forget();
}
// Add user data to aSurface so we can cache lookups in the future.
SourceSurfaceUserData *srcSurfUD = new SourceSurfaceUserData;
srcSurfUD->mBackendType = aTarget->GetBackendType();
srcSurfUD->mSrcSurface = srcBuffer;
aSurface->SetData(&kSourceSurface, srcSurfUD, SourceBufferDestroy);
return srcBuffer.forget();
}
already_AddRefed<DataSourceSurface>
gfxPlatform::GetWrappedDataSourceSurface(gfxASurface* aSurface)
{
RefPtr<gfxImageSurface> image = aSurface->GetAsImageSurface();
if (!image) {
return nullptr;
}
RefPtr<DataSourceSurface> result =
Factory::CreateWrappingDataSourceSurface(image->Data(),
image->Stride(),
image->GetSize(),
ImageFormatToSurfaceFormat(image->Format()));
if (!result) {
return nullptr;
}
// If we wrapped the underlying data of aSurface, then we need to add user data
// to make sure aSurface stays alive until we are done with the data.
DependentSourceSurfaceUserData *srcSurfUD = new DependentSourceSurfaceUserData;
srcSurfUD->mSurface = aSurface;
result->AddUserData(&kThebesSurface, srcSurfUD, SourceSurfaceDestroyed);
return result.forget();
}
already_AddRefed<ScaledFont>
gfxPlatform::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
{
NativeFont nativeFont;
nativeFont.mType = NativeFontType::CAIRO_FONT_FACE;
nativeFont.mFont = aFont->GetCairoScaledFont();
return Factory::CreateScaledFontForNativeFont(nativeFont,
aFont->GetAdjustedSize());
}
int
gfxPlatform::GetTileWidth()
{
MOZ_ASSERT(mTileWidth != -1);
return mTileWidth;
}
int
gfxPlatform::GetTileHeight()
{
MOZ_ASSERT(mTileHeight != -1);
return mTileHeight;
}
void
gfxPlatform::SetTileSize(int aWidth, int aHeight)
{
// Don't allow changing the tile size after we've set it.
// Right now the code assumes that the tile size doesn't change.
MOZ_ASSERT((mTileWidth == -1 && mTileHeight == -1) ||
(mTileWidth == aWidth && mTileHeight == aHeight));
mTileWidth = aWidth;
mTileHeight = aHeight;
}
void
gfxPlatform::ComputeTileSize()
{
// The tile size should be picked in the parent processes
// and sent to the child processes over IPDL GetTileSize.
if (!XRE_IsParentProcess()) {
return;
}
int32_t w = gfxPrefs::LayersTileWidth();
int32_t h = gfxPrefs::LayersTileHeight();
if (gfxPrefs::LayersTilesAdjust()) {
gfx::IntSize screenSize = GetScreenSize();
if (screenSize.width > 0) {
// Choose a size so that there are between 2 and 4 tiles per screen width.
// FIXME: we should probably make sure this is within the max texture size,
// but I think everything should at least support 1024
w = h = clamped(NextPowerOfTwo(screenSize.width) / 4, 256, 1024);
}
#ifdef MOZ_WIDGET_GONK
android::sp<android::GraphicBuffer> alloc =
new android::GraphicBuffer(w, h, android::PIXEL_FORMAT_RGBA_8888,
android::GraphicBuffer::USAGE_SW_READ_OFTEN |
android::GraphicBuffer::USAGE_SW_WRITE_OFTEN |
android::GraphicBuffer::USAGE_HW_TEXTURE);
if (alloc.get()) {
w = alloc->getStride(); // We want the tiles to be gralloc stride aligned.
}
#endif
}
SetTileSize(w, h);
}
void
gfxPlatform::PopulateScreenInfo()
{
nsCOMPtr<nsIScreenManager> manager = do_GetService("@mozilla.org/gfx/screenmanager;1");
MOZ_ASSERT(manager, "failed to get nsIScreenManager");
nsCOMPtr<nsIScreen> screen;
manager->GetPrimaryScreen(getter_AddRefs(screen));
if (!screen) {
// This can happen in xpcshell, for instance
return;
}
screen->GetColorDepth(&mScreenDepth);
int left, top;
screen->GetRect(&left, &top, &mScreenSize.width, &mScreenSize.height);
}
bool
gfxPlatform::SupportsAzureContentForDrawTarget(DrawTarget* aTarget)
{
if (!aTarget) {
return false;
}
#ifdef USE_SKIA_GPU
// Skia content rendering doesn't support GPU acceleration, so we can't
// use the same backend if the current backend is accelerated.
if ((aTarget->GetType() == DrawTargetType::HARDWARE_RASTER)
&& (aTarget->GetBackendType() == BackendType::SKIA))
{
return false;
}
#endif
return SupportsAzureContentForType(aTarget->GetBackendType());
}
bool
gfxPlatform::UseAcceleratedSkiaCanvas()
{
#if(0)
return gfxPrefs::CanvasAzureAccelerated() &&
mPreferredCanvasBackend == BackendType::SKIA;
#endif
return false;
}
bool gfxPlatform::HaveChoiceOfHWAndSWCanvas()
{
#if(0)
return mPreferredCanvasBackend == BackendType::SKIA;
#endif
return false;
}
void
gfxPlatform::InitializeSkiaCacheLimits()
{
if (UseAcceleratedSkiaCanvas()) {
#ifdef USE_SKIA_GPU
bool usingDynamicCache = gfxPrefs::CanvasSkiaGLDynamicCache();
int cacheItemLimit = gfxPrefs::CanvasSkiaGLCacheItems();
int cacheSizeLimit = gfxPrefs::CanvasSkiaGLCacheSize();
// Prefs are in megabytes, but we want the sizes in bytes
cacheSizeLimit *= 1024*1024;
if (usingDynamicCache) {
if (mTotalSystemMemory < 512*1024*1024) {
// We need a very minimal cache on anything smaller than 512mb.
// Note the large jump as we cross 512mb (from 2mb to 32mb).
cacheSizeLimit = 2*1024*1024;
} else if (mTotalSystemMemory > 0) {
cacheSizeLimit = mTotalSystemMemory / 16;
}
}
#ifdef DEBUG
printf_stderr("Determined SkiaGL cache limits: Size %i, Items: %i\n", cacheSizeLimit, cacheItemLimit);
#endif
mSkiaGlue->GetGrContext()->setResourceCacheLimits(cacheItemLimit, cacheSizeLimit);
#endif
}
}
SkiaGLGlue*
gfxPlatform::GetSkiaGLGlue()
{
#ifdef USE_SKIA_GPU
if (!gfxPlatform::GetPlatform()->UseAcceleratedSkiaCanvas()) {
gfxCriticalNote << "Accelerated Skia canvas is disabled";
return nullptr;
}
if (!mSkiaGlue) {
/* Dummy context. We always draw into a FBO.
*
* FIXME: This should be stored in TLS or something, since there needs to be one for each thread using it. As it
* stands, this only works on the main thread.
*/
RefPtr<GLContext> glContext;
glContext = GLContextProvider::CreateHeadless(CreateContextFlags::REQUIRE_COMPAT_PROFILE |
CreateContextFlags::ALLOW_OFFLINE_RENDERER);
if (!glContext) {
printf_stderr("Failed to create GLContext for SkiaGL!\n");
return nullptr;
}
mSkiaGlue = new SkiaGLGlue(glContext);
MOZ_ASSERT(mSkiaGlue->GetGrContext(), "No GrContext");
InitializeSkiaCacheLimits();
}
#endif
return mSkiaGlue;
}
void
gfxPlatform::PurgeSkiaCache()
{
#ifdef USE_SKIA_GPU
if (!mSkiaGlue)
return;
mSkiaGlue->GetGrContext()->freeGpuResources();
// GrContext::flush() doesn't call glFlush. Call it here.
mSkiaGlue->GetGLContext()->MakeCurrent();
mSkiaGlue->GetGLContext()->fFlush();
#endif
}
bool
gfxPlatform::HasEnoughTotalSystemMemoryForSkiaGL()
{
#ifdef MOZ_WIDGET_GONK
if (mTotalSystemMemory < 250*1024*1024) {
return false;
}
#endif
return true;
}
already_AddRefed<DrawTarget>
gfxPlatform::CreateDrawTargetForBackend(BackendType aBackend, const IntSize& aSize, SurfaceFormat aFormat)
{
// There is a bunch of knowledge in the gfxPlatform heirarchy about how to
// create the best offscreen surface for the current system and situation. We
// can easily take advantage of this for the Cairo backend, so that's what we
// do.
// mozilla::gfx::Factory can get away without having all this knowledge for
// now, but this might need to change in the future (using
// CreateOffscreenSurface() and CreateDrawTargetForSurface() for all
// backends).
if (aBackend == BackendType::CAIRO) {
RefPtr<gfxASurface> surf = CreateOffscreenSurface(aSize, SurfaceFormatToImageFormat(aFormat));
if (!surf || surf->CairoStatus()) {
return nullptr;
}
return CreateDrawTargetForSurface(surf, aSize);
} else {
return Factory::CreateDrawTarget(aBackend, aSize, aFormat);
}
}
already_AddRefed<DrawTarget>
gfxPlatform::CreateOffscreenCanvasDrawTarget(const IntSize& aSize, SurfaceFormat aFormat)
{
NS_ASSERTION(mPreferredCanvasBackend != BackendType::NONE, "No backend.");
RefPtr<DrawTarget> target = CreateDrawTargetForBackend(mPreferredCanvasBackend, aSize, aFormat);
if (target ||
mFallbackCanvasBackend == BackendType::NONE) {
return target.forget();
}
#ifdef XP_WIN
// On Windows, the fallback backend (Cairo) should use its image backend.
return Factory::CreateDrawTarget(mFallbackCanvasBackend, aSize, aFormat);
#else
return CreateDrawTargetForBackend(mFallbackCanvasBackend, aSize, aFormat);
#endif
}
already_AddRefed<DrawTarget>
gfxPlatform::CreateOffscreenContentDrawTarget(const IntSize& aSize, SurfaceFormat aFormat)
{
NS_ASSERTION(mPreferredCanvasBackend != BackendType::NONE, "No backend.");
return CreateDrawTargetForBackend(mContentBackend, aSize, aFormat);
}
already_AddRefed<DrawTarget>
gfxPlatform::CreateDrawTargetForData(unsigned char* aData, const IntSize& aSize, int32_t aStride, SurfaceFormat aFormat)
{
NS_ASSERTION(mContentBackend != BackendType::NONE, "No backend.");
BackendType backendType = mContentBackend;
if (!Factory::DoesBackendSupportDataDrawtarget(mContentBackend)) {
backendType = BackendType::CAIRO;
}
RefPtr<DrawTarget> dt = Factory::CreateDrawTargetForData(backendType,
aData, aSize,
aStride, aFormat);
return dt.forget();
}
/* static */ BackendType
gfxPlatform::BackendTypeForName(const nsCString& aName)
{
if (aName.EqualsLiteral("cairo"))
return BackendType::CAIRO;
if (aName.EqualsLiteral("skia"))
return BackendType::SKIA;
if (aName.EqualsLiteral("direct2d"))
return BackendType::DIRECT2D;
if (aName.EqualsLiteral("direct2d1.1"))
return BackendType::DIRECT2D1_1;
if (aName.EqualsLiteral("cg"))
return BackendType::COREGRAPHICS;
return BackendType::NONE;
}
nsresult
gfxPlatform::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult
gfxPlatform::UpdateFontList()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
bool
gfxPlatform::DownloadableFontsEnabled()
{
if (mAllowDownloadableFonts == UNINITIALIZED_VALUE) {
mAllowDownloadableFonts =
Preferences::GetBool(GFX_DOWNLOADABLE_FONTS_ENABLED, false);
}
return mAllowDownloadableFonts;
}
bool
gfxPlatform::UseCmapsDuringSystemFallback()
{
if (mFallbackUsesCmaps == UNINITIALIZED_VALUE) {
mFallbackUsesCmaps =
Preferences::GetBool(GFX_PREF_FALLBACK_USE_CMAPS, false);
}
return mFallbackUsesCmaps;
}
bool
gfxPlatform::OpenTypeSVGEnabled()
{
if (mOpenTypeSVGEnabled == UNINITIALIZED_VALUE) {
mOpenTypeSVGEnabled =
Preferences::GetBool(GFX_PREF_OPENTYPE_SVG, false);
}
return mOpenTypeSVGEnabled > 0;
}
uint32_t
gfxPlatform::WordCacheCharLimit()
{
if (mWordCacheCharLimit == UNINITIALIZED_VALUE) {
mWordCacheCharLimit =
Preferences::GetInt(GFX_PREF_WORD_CACHE_CHARLIMIT, 32);
if (mWordCacheCharLimit < 0) {
mWordCacheCharLimit = 32;
}
}
return uint32_t(mWordCacheCharLimit);
}
uint32_t
gfxPlatform::WordCacheMaxEntries()
{
if (mWordCacheMaxEntries == UNINITIALIZED_VALUE) {
mWordCacheMaxEntries =
Preferences::GetInt(GFX_PREF_WORD_CACHE_MAXENTRIES, 10000);
if (mWordCacheMaxEntries < 0) {
mWordCacheMaxEntries = 10000;
}
}
return uint32_t(mWordCacheMaxEntries);
}
bool
gfxPlatform::UseGraphiteShaping()
{
if (mGraphiteShapingEnabled == UNINITIALIZED_VALUE) {
mGraphiteShapingEnabled =
Preferences::GetBool(GFX_PREF_GRAPHITE_SHAPING, false);
}
return mGraphiteShapingEnabled;
}
gfxFontEntry*
gfxPlatform::MakePlatformFont(const nsAString& aFontName,
uint16_t aWeight,
int16_t aStretch,
uint8_t aStyle,
const uint8_t* aFontData,
uint32_t aLength)
{
// Default implementation does not handle activating downloaded fonts;
// just free the data and return.
// Platforms that support @font-face must override this,
// using the data to instantiate the font, and taking responsibility
// for freeing it when no longer required.
if (aFontData) {
free((void*)aFontData);
}
return nullptr;
}
mozilla::layers::DiagnosticTypes
gfxPlatform::GetLayerDiagnosticTypes()
{
mozilla::layers::DiagnosticTypes type = DiagnosticTypes::NO_DIAGNOSTIC;
if (gfxPrefs::DrawLayerBorders()) {
type |= mozilla::layers::DiagnosticTypes::LAYER_BORDERS;
}
if (gfxPrefs::DrawTileBorders()) {
type |= mozilla::layers::DiagnosticTypes::TILE_BORDERS;
}
if (gfxPrefs::DrawBigImageBorders()) {
type |= mozilla::layers::DiagnosticTypes::BIGIMAGE_BORDERS;
}
if (gfxPrefs::FlashLayerBorders()) {
type |= mozilla::layers::DiagnosticTypes::FLASH_BORDERS;
}
return type;
}
void
gfxPlatform::InitBackendPrefs(uint32_t aCanvasBitmask, BackendType aCanvasDefault,
uint32_t aContentBitmask, BackendType aContentDefault)
{
mPreferredCanvasBackend = GetCanvasBackendPref(aCanvasBitmask);
if (mPreferredCanvasBackend == BackendType::NONE) {
mPreferredCanvasBackend = aCanvasDefault;
}
if (mPreferredCanvasBackend == BackendType::DIRECT2D1_1) {
// Falling back to D2D 1.0 won't help us here. When D2D 1.1 DT creation
// fails it means the surface was too big or there's something wrong with
// the device. D2D 1.0 will encounter a similar situation.
mFallbackCanvasBackend =
GetCanvasBackendPref(aCanvasBitmask &
~(BackendTypeBit(mPreferredCanvasBackend) | BackendTypeBit(BackendType::DIRECT2D)));
} else {
mFallbackCanvasBackend =
GetCanvasBackendPref(aCanvasBitmask & ~BackendTypeBit(mPreferredCanvasBackend));
}
mContentBackendBitmask = aContentBitmask;
mContentBackend = GetContentBackendPref(mContentBackendBitmask);
if (mContentBackend == BackendType::NONE) {
mContentBackend = aContentDefault;
// mContentBackendBitmask is our canonical reference for supported
// backends so we need to add the default if we are using it and
// overriding the prefs.
mContentBackendBitmask |= BackendTypeBit(aContentDefault);
}
}
/* static */ BackendType
gfxPlatform::GetCanvasBackendPref(uint32_t aBackendBitmask)
{
return GetBackendPref("gfx.canvas.azure.backends", aBackendBitmask);
}
/* static */ BackendType
gfxPlatform::GetContentBackendPref(uint32_t &aBackendBitmask)
{
return GetBackendPref("gfx.content.azure.backends", aBackendBitmask);
}
/* static */ BackendType
gfxPlatform::GetBackendPref(const char* aBackendPrefName, uint32_t &aBackendBitmask)
{
nsTArray<nsCString> backendList;
nsCString prefString;
if (NS_SUCCEEDED(Preferences::GetCString(aBackendPrefName, &prefString))) {
ParseString(prefString, ',', backendList);
}
uint32_t allowedBackends = 0;
BackendType result = BackendType::NONE;
for (uint32_t i = 0; i < backendList.Length(); ++i) {
BackendType type = BackendTypeForName(backendList[i]);
if (BackendTypeBit(type) & aBackendBitmask) {
allowedBackends |= BackendTypeBit(type);
if (result == BackendType::NONE) {
result = type;
}
}
}
aBackendBitmask = allowedBackends;
return result;
}
bool
gfxPlatform::InSafeMode()
{
static bool sSafeModeInitialized = false;
static bool sInSafeMode = false;
if (!sSafeModeInitialized) {
sSafeModeInitialized = true;
nsCOMPtr<nsIXULRuntime> xr = do_GetService("@mozilla.org/xre/runtime;1");
if (xr) {
xr->GetInSafeMode(&sInSafeMode);
}
}
return sInSafeMode;
}
bool
gfxPlatform::OffMainThreadCompositingEnabled()
{
return UsesOffMainThreadCompositing();
}
eCMSMode
gfxPlatform::GetCMSMode()
{
if (!gCMSInitialized) {
int32_t mode = gfxPrefs::CMSMode();
if (mode >= 0 && mode < eCMSMode_AllCount) {
gCMSMode = static_cast<eCMSMode>(mode);
}
bool enableV4 = gfxPrefs::CMSEnableV4();
if (enableV4) {
qcms_enable_iccv4();
}
gCMSInitialized = true;
}
return gCMSMode;
}
int
gfxPlatform::GetRenderingIntent()
{
// gfxPrefs.h is using 0 as the default for the rendering
// intent preference, based on that being the value for
// QCMS_INTENT_DEFAULT. Assert here to catch if that ever
// changes and we can then figure out what to do about it.
MOZ_ASSERT(QCMS_INTENT_DEFAULT == 0);
/* Try to query the pref system for a rendering intent. */
int32_t pIntent = gfxPrefs::CMSRenderingIntent();
if ((pIntent < QCMS_INTENT_MIN) || (pIntent > QCMS_INTENT_MAX)) {
/* If the pref is out of range, use embedded profile. */
pIntent = -1;
}
return pIntent;
}
void
gfxPlatform::TransformPixel(const Color& in, Color& out, qcms_transform *transform)
{
if (transform) {
/* we want the bytes in RGB order */
#ifdef IS_LITTLE_ENDIAN
/* ABGR puts the bytes in |RGBA| order on little endian */
uint32_t packed = in.ToABGR();
qcms_transform_data(transform,
(uint8_t *)&packed, (uint8_t *)&packed,
1);
out = Color::FromABGR(packed);
#else
/* ARGB puts the bytes in |ARGB| order on big endian */
uint32_t packed = in.UnusualToARGB();
/* add one to move past the alpha byte */
qcms_transform_data(transform,
(uint8_t *)&packed + 1, (uint8_t *)&packed + 1,
1);
out = Color::UnusualFromARGB(packed);
#endif
}
else if (&out != &in)
out = in;
}
void
gfxPlatform::GetPlatformCMSOutputProfile(void *&mem, size_t &size)
{
mem = nullptr;
size = 0;
}
void
gfxPlatform::GetCMSOutputProfileData(void *&mem, size_t &size)
{
nsAdoptingCString fname = Preferences::GetCString("gfx.color_management.display_profile");
if (!fname.IsEmpty()) {
qcms_data_from_path(fname, &mem, &size);
}
else {
gfxPlatform::GetPlatform()->GetPlatformCMSOutputProfile(mem, size);
}
}
void
gfxPlatform::CreateCMSOutputProfile()
{
if (!gCMSOutputProfile) {
/* Determine if we're using the internal override to force sRGB as
an output profile for reftests. See Bug 452125.
Note that we don't normally (outside of tests) set a
default value of this preference, which means nsIPrefBranch::GetBoolPref
will typically throw (and leave its out-param untouched).
*/
if (Preferences::GetBool(GFX_PREF_CMS_FORCE_SRGB, false)) {
gCMSOutputProfile = GetCMSsRGBProfile();
}
if (!gCMSOutputProfile) {
void* mem = nullptr;
size_t size = 0;
GetCMSOutputProfileData(mem, size);
if ((mem != nullptr) && (size > 0)) {
gCMSOutputProfile = qcms_profile_from_memory(mem, size);
free(mem);
}
}
/* Determine if the profile looks bogus. If so, close the profile
* and use sRGB instead. See bug 460629, */
if (gCMSOutputProfile && qcms_profile_is_bogus(gCMSOutputProfile)) {
NS_ASSERTION(gCMSOutputProfile != GetCMSsRGBProfile(),
"Builtin sRGB profile tagged as bogus!!!");
qcms_profile_release(gCMSOutputProfile);
gCMSOutputProfile = nullptr;
}
if (!gCMSOutputProfile) {
gCMSOutputProfile = GetCMSsRGBProfile();
}
/* Precache the LUT16 Interpolations for the output profile. See
bug 444661 for details. */
qcms_profile_precache_output_transform(gCMSOutputProfile);
}
}
qcms_profile *
gfxPlatform::GetCMSOutputProfile()
{
return gCMSOutputProfile;
}
qcms_profile *
gfxPlatform::GetCMSsRGBProfile()
{
if (!gCMSsRGBProfile) {
/* Create the profile using qcms. */
gCMSsRGBProfile = qcms_profile_sRGB();
}
return gCMSsRGBProfile;
}
qcms_transform *
gfxPlatform::GetCMSRGBTransform()
{
if (!gCMSRGBTransform) {
qcms_profile *inProfile, *outProfile;
outProfile = GetCMSOutputProfile();
inProfile = GetCMSsRGBProfile();
if (!inProfile || !outProfile)
return nullptr;
gCMSRGBTransform = qcms_transform_create(inProfile, QCMS_DATA_RGB_8,
outProfile, QCMS_DATA_RGB_8,
QCMS_INTENT_PERCEPTUAL);
}
return gCMSRGBTransform;
}
qcms_transform *
gfxPlatform::GetCMSInverseRGBTransform()
{
if (!gCMSInverseRGBTransform) {
qcms_profile *inProfile, *outProfile;
inProfile = GetCMSOutputProfile();
outProfile = GetCMSsRGBProfile();
if (!inProfile || !outProfile)
return nullptr;
gCMSInverseRGBTransform = qcms_transform_create(inProfile, QCMS_DATA_RGB_8,
outProfile, QCMS_DATA_RGB_8,
QCMS_INTENT_PERCEPTUAL);
}
return gCMSInverseRGBTransform;
}
qcms_transform *
gfxPlatform::GetCMSRGBATransform()
{
if (!gCMSRGBATransform) {
qcms_profile *inProfile, *outProfile;
outProfile = GetCMSOutputProfile();
inProfile = GetCMSsRGBProfile();
if (!inProfile || !outProfile)
return nullptr;
gCMSRGBATransform = qcms_transform_create(inProfile, QCMS_DATA_RGBA_8,
outProfile, QCMS_DATA_RGBA_8,
QCMS_INTENT_PERCEPTUAL);
}
return gCMSRGBATransform;
}
/* Shuts down various transforms and profiles for CMS. */
static void ShutdownCMS()
{
if (gCMSRGBTransform) {
qcms_transform_release(gCMSRGBTransform);
gCMSRGBTransform = nullptr;
}
if (gCMSInverseRGBTransform) {
qcms_transform_release(gCMSInverseRGBTransform);
gCMSInverseRGBTransform = nullptr;
}
if (gCMSRGBATransform) {
qcms_transform_release(gCMSRGBATransform);
gCMSRGBATransform = nullptr;
}
if (gCMSOutputProfile) {
qcms_profile_release(gCMSOutputProfile);
// handle the aliased case
if (gCMSsRGBProfile == gCMSOutputProfile)
gCMSsRGBProfile = nullptr;
gCMSOutputProfile = nullptr;
}
if (gCMSsRGBProfile) {
qcms_profile_release(gCMSsRGBProfile);
gCMSsRGBProfile = nullptr;
}
// Reset the state variables
gCMSMode = eCMSMode_Off;
gCMSInitialized = false;
}
// default SetupClusterBoundaries, based on Unicode properties;
// platform subclasses may override if they wish
void
gfxPlatform::SetupClusterBoundaries(gfxTextRun *aTextRun, const char16_t *aString)
{
if (aTextRun->GetFlags() & gfxTextRunFactory::TEXT_IS_8BIT) {
// 8-bit text doesn't have clusters.
// XXX is this true in all languages???
// behdad: don't think so. Czech for example IIRC has a
// 'ch' grapheme.
// jfkthame: but that's not expected to behave as a grapheme cluster
// for selection/editing/etc.
return;
}
aTextRun->SetupClusterBoundaries(0, aString, aTextRun->GetLength());
}
int32_t
gfxPlatform::GetBidiNumeralOption()
{
if (mBidiNumeralOption == UNINITIALIZED_VALUE) {
mBidiNumeralOption = Preferences::GetInt(BIDI_NUMERAL_PREF, 0);
}
return mBidiNumeralOption;
}
/* static */ void
gfxPlatform::FlushFontAndWordCaches()
{
gfxFontCache *fontCache = gfxFontCache::GetCache();
if (fontCache) {
fontCache->AgeAllGenerations();
fontCache->FlushShapedWordCaches();
}
}
void
gfxPlatform::FontsPrefsChanged(const char *aPref)
{
NS_ASSERTION(aPref != nullptr, "null preference");
if (!strcmp(GFX_DOWNLOADABLE_FONTS_ENABLED, aPref)) {
mAllowDownloadableFonts = UNINITIALIZED_VALUE;
} else if (!strcmp(GFX_PREF_FALLBACK_USE_CMAPS, aPref)) {
mFallbackUsesCmaps = UNINITIALIZED_VALUE;
} else if (!strcmp(GFX_PREF_WORD_CACHE_CHARLIMIT, aPref)) {
mWordCacheCharLimit = UNINITIALIZED_VALUE;
FlushFontAndWordCaches();
} else if (!strcmp(GFX_PREF_WORD_CACHE_MAXENTRIES, aPref)) {
mWordCacheMaxEntries = UNINITIALIZED_VALUE;
FlushFontAndWordCaches();
} else if (!strcmp(GFX_PREF_GRAPHITE_SHAPING, aPref)) {
mGraphiteShapingEnabled = UNINITIALIZED_VALUE;
FlushFontAndWordCaches();
} else if (!strcmp(BIDI_NUMERAL_PREF, aPref)) {
mBidiNumeralOption = UNINITIALIZED_VALUE;
} else if (!strcmp(GFX_PREF_OPENTYPE_SVG, aPref)) {
mOpenTypeSVGEnabled = UNINITIALIZED_VALUE;
gfxFontCache::GetCache()->AgeAllGenerations();
}
}
mozilla::LogModule*
gfxPlatform::GetLog(eGfxLog aWhichLog)
{
// logs shared across gfx
static LazyLogModule sFontlistLog("fontlist");
static LazyLogModule sFontInitLog("fontinit");
static LazyLogModule sTextrunLog("textrun");
static LazyLogModule sTextrunuiLog("textrunui");
static LazyLogModule sCmapDataLog("cmapdata");
static LazyLogModule sTextPerfLog("textperf");
switch (aWhichLog) {
case eGfxLog_fontlist:
return sFontlistLog;
case eGfxLog_fontinit:
return sFontInitLog;
case eGfxLog_textrun:
return sTextrunLog;
case eGfxLog_textrunui:
return sTextrunuiLog;
case eGfxLog_cmapdata:
return sCmapDataLog;
case eGfxLog_textperf:
return sTextPerfLog;
}
MOZ_ASSERT_UNREACHABLE("Unexpected log type");
return nullptr;
}
mozilla::gfx::SurfaceFormat
gfxPlatform::Optimal2DFormatForContent(gfxContentType aContent)
{
switch (aContent) {
case gfxContentType::COLOR:
switch (GetOffscreenFormat()) {
case gfxImageFormat::ARGB32:
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
case gfxImageFormat::RGB24:
return mozilla::gfx::SurfaceFormat::B8G8R8X8;
case gfxImageFormat::RGB16_565:
return mozilla::gfx::SurfaceFormat::R5G6B5_UINT16;
default:
NS_NOTREACHED("unknown gfxImageFormat for gfxContentType::COLOR");
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
}
case gfxContentType::ALPHA:
return mozilla::gfx::SurfaceFormat::A8;
case gfxContentType::COLOR_ALPHA:
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
default:
NS_NOTREACHED("unknown gfxContentType");
return mozilla::gfx::SurfaceFormat::B8G8R8A8;
}
}
gfxImageFormat
gfxPlatform::OptimalFormatForContent(gfxContentType aContent)
{
switch (aContent) {
case gfxContentType::COLOR:
return GetOffscreenFormat();
case gfxContentType::ALPHA:
return gfxImageFormat::A8;
case gfxContentType::COLOR_ALPHA:
return gfxImageFormat::ARGB32;
default:
NS_NOTREACHED("unknown gfxContentType");
return gfxImageFormat::ARGB32;
}
}
/**
* There are a number of layers acceleration (or layers in general) preferences
* that should be consistent for the lifetime of the application (bug 840967).
* As such, we will evaluate them all as soon as one of them is evaluated
* and remember the values. Changing these preferences during the run will
* not have any effect until we restart.
*/
static bool sLayersSupportsD3D9 = false;
static bool sLayersSupportsD3D11 = false;
bool gANGLESupportsD3D11 = false;
static bool sLayersSupportsHardwareVideoDecoding = false;
static bool sLayersHardwareVideoDecodingFailed = false;
static bool sBufferRotationCheckPref = true;
static bool sPrefBrowserTabsRemoteAutostart = false;
static bool sLayersAccelerationPrefsInitialized = false;
void
InitLayersAccelerationPrefs()
{
if (!sLayersAccelerationPrefsInitialized)
{
// If this is called for the first time on a non-main thread, we're screwed.
// At the moment there's no explicit guarantee that the main thread calls
// this before the compositor thread, but let's at least make the assumption
// explicit.
MOZ_ASSERT(NS_IsMainThread(), "can only initialize prefs on the main thread");
gfxPrefs::GetSingleton();
sPrefBrowserTabsRemoteAutostart = BrowserTabsRemoteAutostart();
nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
int32_t status;
#ifdef XP_WIN
if (gfxPrefs::LayersAccelerationForceEnabled()) {
sLayersSupportsD3D9 = true;
sLayersSupportsD3D11 = true;
} else if (gfxInfo) {
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
if (sPrefBrowserTabsRemoteAutostart && !IsVistaOrLater()) {
gfxWarning() << "Disallowing D3D9 on Windows XP with E10S - see bug 1237770";
} else {
sLayersSupportsD3D9 = true;
}
}
}
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
sLayersSupportsD3D11 = true;
}
}
if (!gfxPrefs::LayersD3D11DisableWARP()) {
// Always support D3D11 when WARP is allowed.
sLayersSupportsD3D11 = true;
}
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
gANGLESupportsD3D11 = true;
}
}
}
#endif
if (Preferences::GetBool("media.hardware-video-decoding.enabled", false) &&
#ifdef XP_WIN
Preferences::GetBool("media.windows-media-foundation.use-dxva", true) &&
#endif
NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING,
&status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
sLayersSupportsHardwareVideoDecoding = true;
}
}
Preferences::AddBoolVarCache(&sLayersHardwareVideoDecodingFailed,
"media.hardware-video-decoding.failed",
false);
sLayersAccelerationPrefsInitialized = true;
}
}
bool
gfxPlatform::CanUseDirect3D9()
{
// this function is called from the compositor thread, so it is not
// safe to init the prefs etc. from here.
MOZ_ASSERT(sLayersAccelerationPrefsInitialized);
return sLayersSupportsD3D9;
}
bool
gfxPlatform::CanUseDirect3D11()
{
// this function is called from the compositor thread, so it is not
// safe to init the prefs etc. from here.
MOZ_ASSERT(sLayersAccelerationPrefsInitialized);
return sLayersSupportsD3D11;
}
bool
gfxPlatform::CanUseHardwareVideoDecoding()
{
// this function is called from the compositor thread, so it is not
// safe to init the prefs etc. from here.
MOZ_ASSERT(sLayersAccelerationPrefsInitialized);
return sLayersSupportsHardwareVideoDecoding && !sLayersHardwareVideoDecodingFailed;
}
bool
gfxPlatform::CanUseDirect3D11ANGLE()
{
MOZ_ASSERT(sLayersAccelerationPrefsInitialized);
return gANGLESupportsD3D11;
}
bool
gfxPlatform::ShouldUseLayersAcceleration()
{
#if(0)
const char *acceleratedEnv = PR_GetEnv("MOZ_ACCELERATED");
if (gfxPrefs::LayersAccelerationDisabled() ||
InSafeMode() ||
(acceleratedEnv && *acceleratedEnv == '0'))
{
return false;
}
if (gfxPrefs::LayersAccelerationForceEnabled()) {
return true;
}
if (AccelerateLayersByDefault()) {
return true;
}
if (acceleratedEnv && *acceleratedEnv != '0') {
return true;
}
#endif // not supported
return false;
}
bool
gfxPlatform::AccelerateLayersByDefault()
{
#if defined(MOZ_GL_PROVIDER) || defined(MOZ_WIDGET_UIKIT)
return true;
#else
return false;
#endif
}
bool
gfxPlatform::BufferRotationEnabled()
{
MutexAutoLock autoLock(*gGfxPlatformPrefsLock);
return sBufferRotationCheckPref && gfxPrefs::BufferRotationEnabled();
}
void
gfxPlatform::DisableBufferRotation()
{
MutexAutoLock autoLock(*gGfxPlatformPrefsLock);
sBufferRotationCheckPref = false;
}
already_AddRefed<ScaledFont>
gfxPlatform::GetScaledFontForFontWithCairoSkia(DrawTarget* aTarget, gfxFont* aFont)
{
NativeFont nativeFont;
if (aTarget->GetBackendType() == BackendType::CAIRO || aTarget->GetBackendType() == BackendType::SKIA) {
nativeFont.mType = NativeFontType::CAIRO_FONT_FACE;
nativeFont.mFont = aFont->GetCairoScaledFont();
return Factory::CreateScaledFontForNativeFont(nativeFont, aFont->GetAdjustedSize());
}
return nullptr;
}
/* static */ bool
gfxPlatform::UsesOffMainThreadCompositing()
{
InitLayersAccelerationPrefs();
static bool firstTime = true;
static bool result = false;
if (firstTime) {
result =
sPrefBrowserTabsRemoteAutostart ||
gfxPrefs::LayersOffMainThreadCompositionEnabled() ||
gfxPrefs::LayersOffMainThreadCompositionForceEnabled() ||
gfxPrefs::LayersOffMainThreadCompositionTestingEnabled();
#if defined(MOZ_WIDGET_GTK)
// Linux users who chose OpenGL are being grandfathered in to OMTC
result |= gfxPrefs::LayersAccelerationForceEnabled();
#endif
firstTime = false;
}
return result;
}
/***
* The preference "layout.frame_rate" has 3 meanings depending on the value:
*
* -1 = Auto (default), use hardware vsync or software vsync @ 60 hz if hw vsync fails.
* 0 = ASAP mode - used during talos testing.
* X = Software vsync at a rate of X times per second.
*/
already_AddRefed<mozilla::gfx::VsyncSource>
gfxPlatform::CreateHardwareVsyncSource()
{
NS_WARNING("Hardware Vsync support not yet implemented. Falling back to software timers");
RefPtr<mozilla::gfx::VsyncSource> softwareVsync = new SoftwareVsyncSource();
return softwareVsync.forget();
}
/* static */ bool
gfxPlatform::IsInLayoutAsapMode()
{
// There are 2 modes of ASAP mode.
// 1 is that the refresh driver and compositor are in lock step
// the second is that the compositor goes ASAP and the refresh driver
// goes at whatever the configurated rate is. This only checks the version
// talos uses, which is the refresh driver and compositor are in lockstep.
return Preferences::GetInt("layout.frame_rate", -1) == 0;
}
/* static */ bool
gfxPlatform::ForceSoftwareVsync()
{
// TenFourFox issue 446
return true; // return Preferences::GetInt("layout.frame_rate", -1) > 0;
}
/* static */ int
gfxPlatform::GetSoftwareVsyncRate()
{
int preferenceRate = Preferences::GetInt("layout.frame_rate",
gfxPlatform::GetDefaultFrameRate());
if (preferenceRate <= 0) {
return gfxPlatform::GetDefaultFrameRate();
}
return preferenceRate;
}
/* static */ int
gfxPlatform::GetDefaultFrameRate()
{
return 30; // TenFourFox issue 446
}
void
gfxPlatform::GetApzSupportInfo(mozilla::widget::InfoObject& aObj)
{
return;
if (!gfxPlatform::AsyncPanZoomEnabled()) {
return;
}
if (SupportsApzWheelInput()) {
aObj.DefineProperty("ApzWheelInput", 1);
}
if (SupportsApzTouchInput()) {
aObj.DefineProperty("ApzTouchInput", 1);
}
if (SupportsApzDragInput()) {
aObj.DefineProperty("ApzDragInput", 1);
}
}
/*static*/ bool
gfxPlatform::AsyncPanZoomEnabled()
{
#if !defined(MOZ_B2G) && !defined(MOZ_WIDGET_ANDROID) && !defined(MOZ_WIDGET_UIKIT)
// For XUL applications (everything but B2G on mobile and desktop, and
// Firefox on Android) we only want to use APZ when E10S is enabled. If
// we ever get input events off the main thread we can consider relaxing
// this requirement.
if (!BrowserTabsRemoteAutostart()) {
return false;
}
#endif
return gfxPrefs::AsyncPanZoomEnabledDoNotUseDirectly();
}
/*virtual*/ bool
gfxPlatform::UseProgressivePaint()
{
return gfxPrefs::ProgressivePaintDoNotUseDirectly();
}
/*static*/ bool
gfxPlatform::PerfWarnings()
{
return gfxPrefs::PerfWarnings();
}
static inline bool
AllowOpenGL(bool* aWhitelisted)
{
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
if (gfxInfo) {
// bug 655578: on X11 at least, we must always call GetData (even if we don't need that information)
// as that's what causes GfxInfo initialization which kills the zombie 'glxtest' process.
// initially we relied on the fact that GetFeatureStatus calls GetData for us, but bug 681026 showed
// that assumption to be unsafe.
gfxInfo->GetData();
int32_t status;
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_OPENGL_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
*aWhitelisted = true;
return true;
}
}
}
return gfxPrefs::LayersAccelerationForceEnabled();
}
void
gfxPlatform::GetAcceleratedCompositorBackends(nsTArray<LayersBackend>& aBackends)
{
// Being whitelisted is not enough to accelerate, but not being whitelisted is
// enough not to:
bool whitelisted = false;
if (AllowOpenGL(&whitelisted)) {
aBackends.AppendElement(LayersBackend::LAYERS_OPENGL);
}
if (!whitelisted) {
static int tell_me_once = 0;
if (!tell_me_once) {
NS_WARNING("OpenGL-accelerated layers are not supported on this system");
tell_me_once = 1;
}
#ifdef MOZ_WIDGET_ANDROID
NS_RUNTIMEABORT("OpenGL-accelerated layers are a hard requirement on this platform. "
"Cannot continue without support for them");
#endif
}
}
void
gfxPlatform::GetCompositorBackends(bool useAcceleration, nsTArray<mozilla::layers::LayersBackend>& aBackends)
{
if (useAcceleration) {
GetAcceleratedCompositorBackends(aBackends);
}
aBackends.AppendElement(LayersBackend::LAYERS_BASIC);
}
void
gfxPlatform::NotifyCompositorCreated(LayersBackend aBackend)
{
if (mCompositorBackend == aBackend) {
return;
}
if (mCompositorBackend != LayersBackend::LAYERS_NONE) {
gfxCriticalNote << "Compositors might be mixed ("
<< int(mCompositorBackend) << "," << int(aBackend) << ")";
}
// Set the backend before we notify so it's available immediately.
mCompositorBackend = aBackend;
// Notify that we created a compositor, so telemetry can update.
NS_DispatchToMainThread(NS_NewRunnableFunction([] {
if (nsCOMPtr<nsIObserverService> obsvc = services::GetObserverService()) {
obsvc->NotifyObservers(nullptr, "compositor:created", nullptr);
}
}));
}
void
gfxPlatform::GetDeviceInitData(mozilla::gfx::DeviceInitData* aOut)
{
MOZ_ASSERT(XRE_IsParentProcess());
aOut->useAcceleration() = ShouldUseLayersAcceleration();
}
void
gfxPlatform::UpdateDeviceInitData()
{
if (XRE_IsParentProcess()) {
// The parent process figures out device initialization on its own.
return;
}
mozilla::gfx::DeviceInitData data;
mozilla::dom::ContentChild::GetSingleton()->SendGetGraphicsDeviceInitData(&data);
SetDeviceInitData(data);
}
bool
gfxPlatform::SupportsApzDragInput() const
{
return gfxPrefs::APZDragEnabled();
}
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