Source code

Revision control

Other Tools

/* -*- 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/. */
#ifndef GFX_PLATFORM_H
#define GFX_PLATFORM_H
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/gfx/Types.h"
#include "nsTArray.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsUnicodeScriptCodes.h"
#include "gfxTelemetry.h"
#include "gfxTypes.h"
#include "gfxSkipChars.h"
#include "qcms.h"
#include "mozilla/RefPtr.h"
#include "GfxInfoCollector.h"
#include "mozilla/layers/CompositorTypes.h"
#include "mozilla/layers/LayersTypes.h"
#include "mozilla/layers/MemoryPressureObserver.h"
class gfxASurface;
class gfxFont;
class gfxFontGroup;
struct gfxFontStyle;
class gfxUserFontSet;
class gfxFontEntry;
class gfxPlatformFontList;
class gfxTextRun;
class nsIURI;
class nsAtom;
class nsIObserver;
class SRGBOverrideObserver;
class gfxTextPerfMetrics;
struct FontMatchingStats;
typedef struct FT_LibraryRec_* FT_Library;
namespace mozilla {
struct StyleFontFamilyList;
class LogModule;
namespace layers {
class FrameStats;
}
namespace gfx {
class DrawTarget;
class SourceSurface;
class DataSourceSurface;
class ScaledFont;
class DrawEventRecorder;
class VsyncSource;
class ContentDeviceData;
class GPUDeviceData;
class FeatureState;
inline uint32_t BackendTypeBit(BackendType b) { return 1 << uint8_t(b); }
} // namespace gfx
namespace dom {
class SystemFontListEntry;
class SystemFontList;
} // namespace dom
} // namespace mozilla
#define MOZ_PERFORMANCE_WARNING(module, ...) \
do { \
if (gfxPlatform::PerfWarnings()) { \
printf_stderr("[" module "] " __VA_ARGS__); \
} \
} while (0)
enum class CMSMode : int32_t {
Off = 0, // No color management
All = 1, // Color manage everything
TaggedOnly = 2, // Color manage tagged Images Only
AllCount = 3
};
enum eGfxLog {
// all font enumerations, localized names, fullname/psnames, cmap loads
eGfxLog_fontlist = 0,
// timing info on font initialization
eGfxLog_fontinit = 1,
// dump text runs, font matching, system fallback for content
eGfxLog_textrun = 2,
// dump text runs, font matching, system fallback for chrome
eGfxLog_textrunui = 3,
// dump cmap coverage data as they are loaded
eGfxLog_cmapdata = 4,
// text perf data
eGfxLog_textperf = 5
};
// Used during font matching to express a preference, if any, for whether
// to use a font that will present a color or monochrome glyph.
enum class eFontPresentation : uint8_t {
// Character does not have the emoji property, so no special heuristics
// apply during font selection.
Any = 0,
// Character is potentially emoji, but Text-style presentation has been
// explicitly requested using VS15.
Text = 1,
// Character has Emoji-style presentation by default (but an author-
// provided webfont will be used even if it is not color).
EmojiDefault = 2,
// Character explicitly requires Emoji-style presentation due to VS16 or
// skin-tone codepoint.
EmojiExplicit = 3
};
inline bool PrefersColor(eFontPresentation aPresentation) {
return aPresentation >= eFontPresentation::EmojiDefault;
}
// when searching through pref langs, max number of pref langs
const uint32_t kMaxLenPrefLangList = 32;
#define UNINITIALIZED_VALUE (-1)
inline const char* GetBackendName(mozilla::gfx::BackendType aBackend) {
switch (aBackend) {
case mozilla::gfx::BackendType::DIRECT2D:
return "direct2d";
case mozilla::gfx::BackendType::CAIRO:
return "cairo";
case mozilla::gfx::BackendType::SKIA:
return "skia";
case mozilla::gfx::BackendType::RECORDING:
return "recording";
case mozilla::gfx::BackendType::DIRECT2D1_1:
return "direct2d 1.1";
case mozilla::gfx::BackendType::WEBRENDER_TEXT:
return "webrender text";
case mozilla::gfx::BackendType::CAPTURE:
return "capture";
case mozilla::gfx::BackendType::NONE:
return "none";
case mozilla::gfx::BackendType::BACKEND_LAST:
return "invalid";
}
MOZ_CRASH("Incomplete switch");
}
enum class DeviceResetReason {
OK = 0, // No reset.
HUNG, // Windows specific, guilty device reset.
REMOVED, // Windows specific, device removed or driver upgraded.
RESET, // Guilty device reset.
DRIVER_ERROR, // Innocent device reset.
INVALID_CALL, // Windows specific, guilty device reset.
OUT_OF_MEMORY,
FORCED_RESET, // Simulated device reset.
OTHER, // Unrecognized reason for device reset.
D3D9_RESET, // Windows specific, not used.
NVIDIA_VIDEO, // Linux specific, NVIDIA video memory was reset.
UNKNOWN, // GL specific, unknown if guilty or innocent.
};
enum class ForcedDeviceResetReason {
OPENSHAREDHANDLE = 0,
COMPOSITOR_UPDATED,
};
struct BackendPrefsData {
uint32_t mCanvasBitmask = 0;
mozilla::gfx::BackendType mCanvasDefault = mozilla::gfx::BackendType::NONE;
uint32_t mContentBitmask = 0;
mozilla::gfx::BackendType mContentDefault = mozilla::gfx::BackendType::NONE;
};
class gfxPlatform : public mozilla::layers::MemoryPressureListener {
friend class SRGBOverrideObserver;
public:
typedef mozilla::StretchRange StretchRange;
typedef mozilla::SlantStyleRange SlantStyleRange;
typedef mozilla::WeightRange WeightRange;
typedef mozilla::gfx::sRGBColor sRGBColor;
typedef mozilla::gfx::DeviceColor DeviceColor;
typedef mozilla::gfx::DataSourceSurface DataSourceSurface;
typedef mozilla::gfx::DrawTarget DrawTarget;
typedef mozilla::gfx::IntSize IntSize;
typedef mozilla::gfx::SourceSurface SourceSurface;
typedef mozilla::unicode::Script Script;
/**
* Return a pointer to the current active platform.
* This is a singleton; it contains mostly convenience
* functions to obtain platform-specific objects.
*/
static gfxPlatform* GetPlatform();
/**
* Returns whether or not graphics has been initialized yet. This is
* intended for Telemetry where we don't necessarily want to initialize
* graphics just to observe its state.
*/
static bool Initialized();
/**
* Shut down Thebes.
* Init() arranges for this to be called at an appropriate time.
*/
static void Shutdown();
/**
* Initialize gfxPlatform (if not already done) in a child process, with
* the provided ContentDeviceData.
*/
static void InitChild(const mozilla::gfx::ContentDeviceData& aData);
static void InitLayersIPC();
static void ShutdownLayersIPC();
/**
* Initialize ScrollMetadata statics. Does not depend on gfxPlatform.
*/
static void InitNullMetadata();
static int32_t MaxTextureSize();
static int32_t MaxAllocSize();
static void InitMoz2DLogging();
static bool IsHeadless();
static bool UseWebRender();
static bool DoesFissionForceWebRender();
static bool UseRemoteCanvas();
static bool IsBackendAccelerated(
const mozilla::gfx::BackendType aBackendType);
static bool CanMigrateMacGPUs();
/**
* Create an offscreen surface of the given dimensions
* and image format.
*/
virtual already_AddRefed<gfxASurface> CreateOffscreenSurface(
const IntSize& aSize, gfxImageFormat aFormat) = 0;
/**
* Beware that this method may return DrawTargets which are not fully
* supported on the current platform and might fail silently in subtle ways.
* This is a massive potential footgun. You should only use these methods for
* canvas drawing really. Use extreme caution if you use them for content
* where you are not 100% sure we support the DrawTarget we get back. See
* SupportsAzureContentForDrawTarget.
*/
static already_AddRefed<DrawTarget> CreateDrawTargetForSurface(
gfxASurface* aSurface, const mozilla::gfx::IntSize& aSize);
/*
* Creates a SourceSurface for a gfxASurface. This function does no caching,
* so the caller should cache the gfxASurface if it will be used frequently.
* The returned surface keeps a reference to aTarget, so it is OK to keep the
* surface, even if aTarget changes.
* aTarget should not keep a reference to the returned surface because that
* will cause a cycle.
*
* This function is static so that it can be accessed from outside the main
* process.
*
* aIsPlugin is used to tell the backend that they can optimize this surface
* specifically because it's used for a plugin. This is mostly for Skia.
*/
static already_AddRefed<SourceSurface> GetSourceSurfaceForSurface(
RefPtr<mozilla::gfx::DrawTarget> aTarget, gfxASurface* aSurface,
bool aIsPlugin = false);
static void ClearSourceSurfaceForSurface(gfxASurface* aSurface);
static already_AddRefed<DataSourceSurface> GetWrappedDataSourceSurface(
gfxASurface* aSurface);
already_AddRefed<DrawTarget> CreateOffscreenContentDrawTarget(
const mozilla::gfx::IntSize& aSize, mozilla::gfx::SurfaceFormat aFormat,
bool aFallback = false);
already_AddRefed<DrawTarget> CreateOffscreenCanvasDrawTarget(
const mozilla::gfx::IntSize& aSize, mozilla::gfx::SurfaceFormat aFormat);
already_AddRefed<DrawTarget> CreateSimilarSoftwareDrawTarget(
DrawTarget* aDT, const IntSize& aSize,
mozilla::gfx::SurfaceFormat aFormat);
static already_AddRefed<DrawTarget> CreateDrawTargetForData(
unsigned char* aData, const mozilla::gfx::IntSize& aSize, int32_t aStride,
mozilla::gfx::SurfaceFormat aFormat, bool aUninitialized = false);
/**
* Returns true if we should use Azure to render content with aTarget. For
* example, it is possible that we are using Direct2D for rendering and thus
* using Azure. But we want to render to a CairoDrawTarget, in which case
* SupportsAzureContent will return true but SupportsAzureContentForDrawTarget
* will return false.
*/
bool SupportsAzureContentForDrawTarget(mozilla::gfx::DrawTarget* aTarget);
bool SupportsAzureContentForType(mozilla::gfx::BackendType aType) {
return BackendTypeBit(aType) & mContentBackendBitmask;
}
static bool AsyncPanZoomEnabled();
const char* GetAzureCanvasBackend() const;
const char* GetAzureContentBackend() const;
virtual void GetAzureBackendInfo(mozilla::widget::InfoObject& aObj);
void GetApzSupportInfo(mozilla::widget::InfoObject& aObj);
void GetTilesSupportInfo(mozilla::widget::InfoObject& aObj);
void GetFrameStats(mozilla::widget::InfoObject& aObj);
void GetCMSSupportInfo(mozilla::widget::InfoObject& aObj);
void GetDisplayInfo(mozilla::widget::InfoObject& aObj);
// Get the default content backend that will be used with the default
// compositor. If the compositor is known when calling this function,
// GetContentBackendFor() should be called instead.
mozilla::gfx::BackendType GetDefaultContentBackend() const {
return mContentBackend;
}
/// Return the software backend to use by default.
mozilla::gfx::BackendType GetSoftwareBackend() { return mSoftwareBackend; }
// Return the best content backend available that is compatible with the
// given layers backend.
virtual mozilla::gfx::BackendType GetContentBackendFor(
mozilla::layers::LayersBackend aLayers) {
return mContentBackend;
}
virtual mozilla::gfx::BackendType GetPreferredCanvasBackend() {
return mPreferredCanvasBackend;
}
mozilla::gfx::BackendType GetFallbackCanvasBackend() {
return mFallbackCanvasBackend;
}
/*
* Font bits
*/
/**
* Fill aListOfFonts with the results of querying the list of font names
* that correspond to the given language group or generic font family
* (or both, or neither).
*/
virtual nsresult GetFontList(nsAtom* aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts);
/**
* Fill aFontList with a list of SystemFontListEntry records for the
* available fonts on the platform; used to pass the list from chrome to
* content process. Currently implemented only on MacOSX and Linux.
*/
virtual void ReadSystemFontList(mozilla::dom::SystemFontList*){};
/**
* Rebuilds the system font lists (if aFullRebuild is true), or just notifies
* content that the list has changed but existing memory mappings are still
* valid (aFullRebuild is false).
*/
nsresult UpdateFontList(bool aFullRebuild = true);
/**
* Create the platform font-list object (gfxPlatformFontList concrete
* subclass). This function is responsible to create the appropriate subclass
* of gfxPlatformFontList *and* to call its InitFontList() method.
*/
virtual bool CreatePlatformFontList() = 0;
/**
* Resolving a font name to family name. The result MUST be in the result of
* GetFontList(). If the name doesn't in the system, aFamilyName will be empty
* string, but not failed.
*/
void GetStandardFamilyName(const nsCString& aFontName,
nsACString& aFamilyName);
/**
* Returns default font name (localized family name) for aLangGroup and
* aGenericFamily. The result is typically the first font in
* font.name-list.<aGenericFamily>.<aLangGroup>. However, if it's not
* available in the system, this may return second or later font in the
* pref. If there are no available fonts in the pref, returns empty string.
*/
nsAutoCString GetDefaultFontName(const nsACString& aLangGroup,
const nsACString& aGenericFamily);
/**
* Create a gfxFontGroup based on the given family list and style.
*/
gfxFontGroup* CreateFontGroup(
const mozilla::StyleFontFamilyList& aFontFamilyList,
const gfxFontStyle* aStyle, nsAtom* aLanguage, bool aExplicitLanguage,
gfxTextPerfMetrics* aTextPerf, FontMatchingStats* aFontMatchingStats,
gfxUserFontSet* aUserFontSet, gfxFloat aDevToCssSize) const;
/**
* Look up a local platform font using the full font face name.
* (Needed to support @font-face src local().)
* Ownership of the returned gfxFontEntry is passed to the caller,
* who must either AddRef() or delete.
*/
gfxFontEntry* LookupLocalFont(const nsACString& aFontName,
WeightRange aWeightForEntry,
StretchRange aStretchForEntry,
SlantStyleRange aStyleForEntry);
/**
* Activate a platform font. (Needed to support @font-face src url().)
* aFontData is a NS_Malloc'ed block that must be freed by this function
* (or responsibility passed on) when it is no longer needed; the caller
* will NOT free it.
* Ownership of the returned gfxFontEntry is passed to the caller,
* who must either AddRef() or delete.
*/
gfxFontEntry* MakePlatformFont(const nsACString& aFontName,
WeightRange aWeightForEntry,
StretchRange aStretchForEntry,
SlantStyleRange aStyleForEntry,
const uint8_t* aFontData, uint32_t aLength);
/**
* Whether to allow downloadable fonts via @font-face rules
*/
bool DownloadableFontsEnabled();
/**
* True when hinting should be enabled. This setting shouldn't
* change per gecko process, while the process is live. If so the
* results are not defined.
*
* NB: this bit is only honored by the FT2 backend, currently.
*/
virtual bool FontHintingEnabled() { return true; }
/**
* True when zooming should not require reflow, so glyph metrics and
* positioning should not be adjusted for device pixels.
* If this is TRUE, then FontHintingEnabled() should be FALSE,
* but the converse is not necessarily required;
*
* Like FontHintingEnabled (above), this setting shouldn't
* change per gecko process, while the process is live. If so the
* results are not defined.
*
* NB: this bit is only honored by the FT2 backend, currently.
*/
virtual bool RequiresLinearZoom() { return false; }
/**
* Whether the frame->StyleFont().mFont.smoothing field is respected by
* text rendering on this platform.
*/
virtual bool RespectsFontStyleSmoothing() const { return false; }
/**
* Whether to check all font cmaps during system font fallback
*/
bool UseCmapsDuringSystemFallback();
/**
* Whether to render SVG glyphs within an OpenType font wrapper
*/
bool OpenTypeSVGEnabled();
/**
* Max character length of words in the word cache
*/
uint32_t WordCacheCharLimit();
/**
* Max number of entries in word cache
*/
uint32_t WordCacheMaxEntries();
/**
* Whether to use the SIL Graphite rendering engine
* (for fonts that include Graphite tables)
*/
bool UseGraphiteShaping();
// Check whether format is supported on a platform (if unclear, returns true).
// Default implementation checks for "common" formats that we support across
// all platforms, but individual platform implementations may override.
virtual bool IsFontFormatSupported(uint32_t aFormatFlags);
virtual bool DidRenderingDeviceReset(
DeviceResetReason* aResetReason = nullptr) {
return false;
}
// returns a list of commonly used fonts for a given character
// these are *possible* matches, no cmap-checking is done at this level
virtual void GetCommonFallbackFonts(uint32_t /*aCh*/, Script /*aRunScript*/,
eFontPresentation /*aPresentation*/,
nsTArray<const char*>& /*aFontList*/) {
// platform-specific override, by default do nothing
}
// Are we in safe mode?
static bool InSafeMode();
static bool OffMainThreadCompositingEnabled();
void UpdateCanUseHardwareVideoDecoding();
// Returns a prioritized list of all available compositor backends.
void GetCompositorBackends(
bool useAcceleration,
nsTArray<mozilla::layers::LayersBackend>& aBackends);
/**
* Is it possible to use buffer rotation. Note that these
* check the preference, but also allow for the override to
* disable it using DisableBufferRotation.
*/
static bool BufferRotationEnabled();
static void DisableBufferRotation();
/**
* Are we going to try color management?
*/
static CMSMode GetCMSMode() {
EnsureCMSInitialized();
return gCMSMode;
}
/**
* Used only for testing. Override the pref setting.
*/
static void SetCMSModeOverride(CMSMode aMode);
/**
* Determines the rendering intent for color management.
*
* If the value in the pref gfx.color_management.rendering_intent is a
* valid rendering intent as defined in gfx/qcms/qcms.h, that
* value is returned. Otherwise, -1 is returned and the embedded intent
* should be used.
*
* See bug 444014 for details.
*/
static int GetRenderingIntent();
/**
* Convert a pixel using a cms transform in an endian-aware manner.
*/
static DeviceColor TransformPixel(const sRGBColor& in,
qcms_transform* transform);
/**
* Return the output device ICC profile.
*/
static qcms_profile* GetCMSOutputProfile() {
EnsureCMSInitialized();
return gCMSOutputProfile;
}
/**
* Return the sRGB ICC profile.
*/
static qcms_profile* GetCMSsRGBProfile() {
EnsureCMSInitialized();
return gCMSsRGBProfile;
}
/**
* Return sRGB -> output device transform.
*/
static qcms_transform* GetCMSRGBTransform() {
EnsureCMSInitialized();
return gCMSRGBTransform;
}
/**
* Return output -> sRGB device transform.
*/
static qcms_transform* GetCMSInverseRGBTransform() {
MOZ_ASSERT(gCMSInitialized);
return gCMSInverseRGBTransform;
}
/**
* Return sRGBA -> output device transform.
*/
static qcms_transform* GetCMSRGBATransform() {
MOZ_ASSERT(gCMSInitialized);
return gCMSRGBATransform;
}
/**
* Return sBGRA -> output device transform.
*/
static qcms_transform* GetCMSBGRATransform() {
MOZ_ASSERT(gCMSInitialized);
return gCMSBGRATransform;
}
/**
* Return OS RGBA -> output device transform.
*/
static qcms_transform* GetCMSOSRGBATransform();
/**
* Return OS RGBA QCMS type.
*/
static qcms_data_type GetCMSOSRGBAType();
virtual void FontsPrefsChanged(const char* aPref);
int32_t GetBidiNumeralOption();
/**
* This is a bit ugly, but useful... force all presContexts to reflow,
* by toggling a preference that they observe. This is used when
* something about platform settings changes that might have an effect
* on layout, such as font rendering settings that influence metrics.
*/
static void ForceGlobalReflow();
static void FlushFontAndWordCaches();
/**
* Returns a 1x1 surface that can be used to create graphics contexts
* for measuring text etc as if they will be rendered to the screen
*/
gfxASurface* ScreenReferenceSurface() { return mScreenReferenceSurface; }
/**
* Returns a 1x1 DrawTarget that can be used for measuring text etc. as
* it would measure if rendered on-screen. Guaranteed to return a
* non-null and valid DrawTarget.
*/
RefPtr<mozilla::gfx::DrawTarget> ScreenReferenceDrawTarget();
virtual mozilla::gfx::SurfaceFormat Optimal2DFormatForContent(
gfxContentType aContent);
virtual gfxImageFormat OptimalFormatForContent(gfxContentType aContent);
virtual gfxImageFormat GetOffscreenFormat() {
return mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32;
}
/**
* Returns whether the current process should use tiling for layers.
*/
virtual bool UsesTiling() const;
/**
* Returns whether the content process will use tiling for layers. This is
* only used by about:support.
*/
virtual bool ContentUsesTiling() const;
/**
* Returns a logger if one is available and logging is enabled
*/
static mozilla::LogModule* GetLog(eGfxLog aWhichLog);
int GetScreenDepth() const { return mScreenDepth; }
mozilla::gfx::IntSize GetScreenSize() const { return mScreenSize; }
/**
* Return the layer debugging options to use browser-wide.
*/
mozilla::layers::DiagnosticTypes GetLayerDiagnosticTypes();
static void PurgeSkiaFontCache();
static bool UsesOffMainThreadCompositing();
/**
* Get the hardware vsync source for each platform.
* Should only exist and be valid on the parent process
*/
virtual mozilla::gfx::VsyncSource* GetHardwareVsync() {
MOZ_ASSERT(mVsyncSource != nullptr);
MOZ_ASSERT(XRE_IsParentProcess());
return mVsyncSource;
}
/**
* True if layout rendering should use ASAP mode, which means
* the refresh driver and compositor should render ASAP.
* Used for talos testing purposes
*/
static bool IsInLayoutAsapMode();
/**
* Returns whether or not a custom vsync rate is set.
*/
static bool ForceSoftwareVsync();
/**
* Returns the software vsync rate to use.
*/
static int GetSoftwareVsyncRate();
/**
* Returns the default frame rate for the refresh driver / software vsync.
*/
static int GetDefaultFrameRate();
/**
* Update the frame rate (called e.g. after pref changes).
*/
static void ReInitFrameRate();
/**
* Update force subpixel AA quality setting (called after pref
* changes).
*/
void UpdateForceSubpixelAAWherePossible();
/**
* Used to test which input types are handled via APZ.
*/
virtual bool SupportsApzWheelInput() const { return false; }
bool SupportsApzTouchInput() const;
bool SupportsApzDragInput() const;
bool SupportsApzKeyboardInput() const;
bool SupportsApzAutoscrolling() const;
bool SupportsApzZooming() const;
// If a device reset has occurred, schedule any necessary paints in the
// widget. This should only be used within nsRefreshDriver.
virtual void SchedulePaintIfDeviceReset() {}
/**
* Helper method, creates a draw target for a specific Azure backend.
* Used by CreateOffscreenDrawTarget.
*/
already_AddRefed<DrawTarget> CreateDrawTargetForBackend(
mozilla::gfx::BackendType aBackend, const mozilla::gfx::IntSize& aSize,
mozilla::gfx::SurfaceFormat aFormat);
/**
* Wrapper around StaticPrefs::gfx_perf_warnings_enabled().
* Extracted into a function to avoid including StaticPrefs_gfx.h from this
* file.
*/
static bool PerfWarnings();
static void DisableGPUProcess();
void NotifyCompositorCreated(mozilla::layers::LayersBackend aBackend);
mozilla::layers::LayersBackend GetCompositorBackend() const {
return mCompositorBackend;
}
virtual void CompositorUpdated() {}
// Plugin async drawing support.
virtual bool SupportsPluginDirectBitmapDrawing() { return false; }
// Some platforms don't support CompositorOGL in an unaccelerated OpenGL
// context. These platforms should return true here.
virtual bool RequiresAcceleratedGLContextForCompositorOGL() const {
return false;
}
/**
* Check the blocklist for a feature. Returns false if the feature is blocked
* with an appropriate message and failure ID.
* */
static bool IsGfxInfoStatusOkay(int32_t aFeature, nsCString* aOutMessage,
nsCString& aFailureId);
const gfxSkipChars& EmptySkipChars() const { return kEmptySkipChars; }
/**
* Returns a buffer containing the CMS output profile data. The way this
* is obtained is platform-specific.
*/
virtual nsTArray<uint8_t> GetPlatformCMSOutputProfileData();
/**
* Return information on how child processes should initialize graphics
* devices.
*/
virtual void BuildContentDeviceData(mozilla::gfx::ContentDeviceData* aOut);
/**
* Imports settings from the GPU process. This should only be called through
* GPUProcessManager, in the UI process.
*/
virtual void ImportGPUDeviceData(const mozilla::gfx::GPUDeviceData& aData);
bool HasVariationFontSupport() const { return mHasVariationFontSupport; }
bool HasNativeColrFontSupport() const { return mHasNativeColrFontSupport; }
// you probably want to use gfxVars::UseWebRender() instead of this
static bool WebRenderPrefEnabled();
// you probably want to use gfxVars::UseWebRender() instead of this
static bool WebRenderEnvvarEnabled();
// you probably want to use gfxVars::UseWebRender() instead of this
static bool WebRenderEnvvarDisabled();
static const char* WebRenderResourcePathOverride();
// Returns true if we would like to keep the GPU process if possible.
static bool FallbackFromAcceleration(mozilla::gfx::FeatureStatus aStatus,
const char* aMessage,
const nsACString& aFailureId);
void NotifyFrameStats(nsTArray<mozilla::layers::FrameStats>&& aFrameStats);
virtual void OnMemoryPressure(
mozilla::layers::MemoryPressureReason aWhy) override;
virtual void EnsureDevicesInitialized(){};
virtual bool DevicesInitialized() { return true; };
virtual bool UseDMABufWebGL() { return false; }
virtual bool IsWaylandDisplay() { return false; }
static uint32_t TargetFrameRate();
static bool UseDesktopZoomingScrollbars();
protected:
gfxPlatform();
virtual ~gfxPlatform();
virtual void InitAcceleration();
virtual void InitWebRenderConfig();
virtual void InitWebGLConfig();
virtual void InitWebGPUConfig();
virtual void GetPlatformDisplayInfo(mozilla::widget::InfoObject& aObj) {}
/**
* Called immediately before deleting the gfxPlatform object.
*/
virtual void WillShutdown();
/**
* Initialized hardware vsync based on each platform.
*/
virtual already_AddRefed<mozilla::gfx::VsyncSource>
CreateHardwareVsyncSource();
// Returns whether or not layers should be accelerated by default on this
// platform.
virtual bool AccelerateLayersByDefault();
// Returns a prioritized list of available compositor backends for
// acceleration.
virtual void GetAcceleratedCompositorBackends(
nsTArray<mozilla::layers::LayersBackend>& aBackends);
// Returns preferences of canvas and content backends.
virtual BackendPrefsData GetBackendPrefs() const;
/**
* Initialise the preferred and fallback canvas backends
* aBackendBitmask specifies the backends which are acceptable to the caller.
* The backend used is determined by aBackendBitmask and the order specified
* by the gfx.canvas.azure.backends pref.
*/
void InitBackendPrefs(BackendPrefsData&& aPrefsData);
/**
* Content-process only. Requests device preferences from the parent process
* and updates any cached settings.
*/
void FetchAndImportContentDeviceData();
virtual void ImportContentDeviceData(
const mozilla::gfx::ContentDeviceData& aData);
/**
* Returns the contents of the file pointed to by the
* gfx.color_management.display_profile pref, if set.
* Returns an empty array if not set, or if an error occurs
*/
nsTArray<uint8_t> GetPrefCMSOutputProfileData();
/**
* If inside a child process and currently being initialized by the
* SetXPCOMProcessAttributes message, this can be used by subclasses to
* retrieve the ContentDeviceData passed by the message
*
* If not currently being initialized, will return nullptr. In this case,
* child should send a sync message to ask parent for color profile
*/
const mozilla::gfx::ContentDeviceData* GetInitContentDeviceData();
/**
* Increase the global device counter after a device has been removed/reset.
*/
void BumpDeviceCounter();
/**
* returns the first backend named in the pref gfx.canvas.azure.backends
* which is a component of aBackendBitmask, a bitmask of backend types
*/
static mozilla::gfx::BackendType GetCanvasBackendPref(
uint32_t aBackendBitmask);
/**
* returns the first backend named in the pref gfx.content.azure.backend
* which is a component of aBackendBitmask, a bitmask of backend types
*/
static mozilla::gfx::BackendType GetContentBackendPref(
uint32_t& aBackendBitmask);
/**
* Will return the first backend named in aBackendPrefName
* allowed by aBackendBitmask, a bitmask of backend types.
* It also modifies aBackendBitmask to only include backends that are
* allowed given the prefs.
*/
static mozilla::gfx::BackendType GetBackendPref(const char* aBackendPrefName,
uint32_t& aBackendBitmask);
/**
* Decode the backend enumberation from a string.
*/
static mozilla::gfx::BackendType BackendTypeForName(const nsCString& aName);
virtual bool CanUseHardwareVideoDecoding();
virtual bool CheckVariationFontSupport() = 0;
int8_t mAllowDownloadableFonts;
int8_t mGraphiteShapingEnabled;
int8_t mOpenTypeSVGEnabled;
int8_t mBidiNumeralOption;
// whether to always search font cmaps globally
// when doing system font fallback
int8_t mFallbackUsesCmaps;
// Whether the platform supports rendering OpenType font variations
bool mHasVariationFontSupport;
// Whether the platform font APIs have native support for COLR fonts.
// Set to true during initialization on platforms that implement this.
bool mHasNativeColrFontSupport = false;
// max character limit for words in word cache
int32_t mWordCacheCharLimit;
// max number of entries in word cache
int32_t mWordCacheMaxEntries;
uint64_t mTotalPhysicalMemory;
uint64_t mTotalVirtualMemory;
// Hardware vsync source. Only valid on parent process
RefPtr<mozilla::gfx::VsyncSource> mVsyncSource;
RefPtr<mozilla::gfx::DrawTarget> mScreenReferenceDrawTarget;
private:
/**
* Start up Thebes.
*/
static void Init();
static void InitOpenGLConfig();
static mozilla::Atomic<bool, mozilla::MemoryOrdering::ReleaseAcquire>
gCMSInitialized;
static CMSMode gCMSMode;
// These two may point to the same profile
static qcms_profile* gCMSOutputProfile;
static qcms_profile* gCMSsRGBProfile;
static qcms_transform* gCMSRGBTransform;
static qcms_transform* gCMSInverseRGBTransform;
static qcms_transform* gCMSRGBATransform;
static qcms_transform* gCMSBGRATransform;
inline static void EnsureCMSInitialized() {
if (MOZ_UNLIKELY(!gCMSInitialized)) {
InitializeCMS();
}
}
static void InitializeCMS();
static void ShutdownCMS();
friend void RecordingPrefChanged(const char* aPrefName, void* aClosure);
/**
* Calling this function will compute and set the ideal tile size for the
* platform. This will only have an effect in the parent process; child
* processes should be updated via SetTileSize to match the value computed in
* the parent.
*/
void ComputeTileSize();
/**
* This uses nsIScreenManager to determine the screen size and color depth
*/
void PopulateScreenInfo();
void InitCompositorAccelerationPrefs();
void InitGPUProcessPrefs();
virtual void InitPlatformGPUProcessPrefs() {}
void InitOMTPConfig();
// Gather telemetry data about the Gfx Platform and send it
static void ReportTelemetry();
static bool IsDXInterop2Blocked();
static bool IsDXNV12Blocked();
static bool IsDXP010Blocked();
static bool IsDXP016Blocked();
RefPtr<gfxASurface> mScreenReferenceSurface;
RefPtr<mozilla::layers::MemoryPressureObserver> mMemoryPressureObserver;
// The preferred draw target backend to use for canvas
mozilla::gfx::BackendType mPreferredCanvasBackend;
// The fallback draw target backend to use for canvas, if the preferred
// backend fails
mozilla::gfx::BackendType mFallbackCanvasBackend;
// The backend to use for content
mozilla::gfx::BackendType mContentBackend;
// The backend to use when we need it not to be accelerated.
mozilla::gfx::BackendType mSoftwareBackend;
// Bitmask of backend types we can use to render content
uint32_t mContentBackendBitmask;
mozilla::widget::GfxInfoCollector<gfxPlatform> mAzureCanvasBackendCollector;
mozilla::widget::GfxInfoCollector<gfxPlatform> mApzSupportCollector;
mozilla::widget::GfxInfoCollector<gfxPlatform> mTilesInfoCollector;
mozilla::widget::GfxInfoCollector<gfxPlatform> mFrameStatsCollector;
mozilla::widget::GfxInfoCollector<gfxPlatform> mCMSInfoCollector;
mozilla::widget::GfxInfoCollector<gfxPlatform> mDisplayInfoCollector;
nsTArray<mozilla::layers::FrameStats> mFrameStats;
RefPtr<mozilla::gfx::DrawEventRecorder> mRecorder;
// Backend that we are compositing with. NONE, if no compositor has been
// created yet.
mozilla::layers::LayersBackend mCompositorBackend;
int32_t mScreenDepth;
mozilla::gfx::IntSize mScreenSize;
// Total number of screen pixels across all monitors.
int64_t mScreenPixels;
// An instance of gfxSkipChars which is empty. It is used as the
// basis for error-case iterators.
const gfxSkipChars kEmptySkipChars;
};
#endif /* GFX_PLATFORM_H */