847 lines
28 KiB
C++
847 lines
28 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_PLATFORM_H
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#define GFX_PLATFORM_H
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#include "mozilla/Logging.h"
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#include "mozilla/gfx/Types.h"
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#include "nsTArray.h"
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#include "nsString.h"
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#include "nsCOMPtr.h"
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#include "nsUnicodeScriptCodes.h"
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#include "gfxTypes.h"
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#include "gfxFontFamilyList.h"
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#include "gfxBlur.h"
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#include "gfxSkipChars.h"
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#include "nsRect.h"
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#include "qcms.h"
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#include "mozilla/RefPtr.h"
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#include "GfxInfoCollector.h"
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#include "mozilla/layers/CompositorTypes.h"
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class gfxASurface;
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class gfxFont;
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class gfxFontGroup;
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struct gfxFontStyle;
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class gfxUserFontSet;
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class gfxFontEntry;
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class gfxPlatformFontList;
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class gfxTextRun;
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class nsIURI;
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class nsIAtom;
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class nsIObserver;
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class SRGBOverrideObserver;
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class gfxTextPerfMetrics;
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namespace mozilla {
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namespace gl {
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class SkiaGLGlue;
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} // namespace gl
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namespace gfx {
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class DrawTarget;
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class SourceSurface;
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class DataSourceSurface;
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class ScaledFont;
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class DrawEventRecorder;
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class VsyncSource;
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class ContentDeviceData;
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class GPUDeviceData;
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class FeatureState;
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inline uint32_t
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BackendTypeBit(BackendType b)
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{
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return 1 << uint8_t(b);
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}
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} // namespace gfx
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} // namespace mozilla
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#define MOZ_PERFORMANCE_WARNING(module, ...) \
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do { \
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if (gfxPlatform::PerfWarnings()) { \
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printf_stderr("[" module "] " __VA_ARGS__); \
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} \
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} while (0)
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enum eCMSMode {
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eCMSMode_Off = 0, // No color management
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eCMSMode_All = 1, // Color manage everything
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eCMSMode_TaggedOnly = 2, // Color manage tagged Images Only
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eCMSMode_AllCount = 3
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};
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enum eGfxLog {
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// all font enumerations, localized names, fullname/psnames, cmap loads
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eGfxLog_fontlist = 0,
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// timing info on font initialization
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eGfxLog_fontinit = 1,
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// dump text runs, font matching, system fallback for content
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eGfxLog_textrun = 2,
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// dump text runs, font matching, system fallback for chrome
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eGfxLog_textrunui = 3,
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// dump cmap coverage data as they are loaded
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eGfxLog_cmapdata = 4,
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// text perf data
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eGfxLog_textperf = 5
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};
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// when searching through pref langs, max number of pref langs
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const uint32_t kMaxLenPrefLangList = 32;
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#define UNINITIALIZED_VALUE (-1)
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inline const char*
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GetBackendName(mozilla::gfx::BackendType aBackend)
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{
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switch (aBackend) {
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case mozilla::gfx::BackendType::DIRECT2D:
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return "direct2d";
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case mozilla::gfx::BackendType::CAIRO:
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return "cairo";
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case mozilla::gfx::BackendType::SKIA:
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return "skia";
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case mozilla::gfx::BackendType::RECORDING:
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return "recording";
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case mozilla::gfx::BackendType::DIRECT2D1_1:
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return "direct2d 1.1";
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case mozilla::gfx::BackendType::NONE:
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return "none";
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case mozilla::gfx::BackendType::BACKEND_LAST:
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return "invalid";
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}
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MOZ_CRASH("Incomplete switch");
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}
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enum class DeviceResetReason
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{
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OK = 0,
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HUNG,
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REMOVED,
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RESET,
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DRIVER_ERROR,
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INVALID_CALL,
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OUT_OF_MEMORY,
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FORCED_RESET,
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UNKNOWN,
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D3D9_RESET
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};
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enum class ForcedDeviceResetReason
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{
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OPENSHAREDHANDLE = 0,
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COMPOSITOR_UPDATED,
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};
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class gfxPlatform {
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friend class SRGBOverrideObserver;
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public:
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typedef mozilla::gfx::Color Color;
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typedef mozilla::gfx::DataSourceSurface DataSourceSurface;
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typedef mozilla::gfx::DrawTarget DrawTarget;
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typedef mozilla::gfx::IntSize IntSize;
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typedef mozilla::gfx::SourceSurface SourceSurface;
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typedef mozilla::unicode::Script Script;
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/**
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* Return a pointer to the current active platform.
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* This is a singleton; it contains mostly convenience
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* functions to obtain platform-specific objects.
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*/
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static gfxPlatform *GetPlatform();
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/**
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* Returns whether or not graphics has been initialized yet. This is
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* intended for Telemetry where we don't necessarily want to initialize
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* graphics just to observe its state.
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*/
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static bool Initialized();
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/**
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* Shut down Thebes.
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* Init() arranges for this to be called at an appropriate time.
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*/
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static void Shutdown();
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static void InitLayersIPC();
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static void ShutdownLayersIPC();
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/**
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* Initialize ScrollMetadata statics. Does not depend on gfxPlatform.
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*/
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static void InitNullMetadata();
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static void InitMoz2DLogging();
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/**
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* Create an offscreen surface of the given dimensions
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* and image format.
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*/
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virtual already_AddRefed<gfxASurface>
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CreateOffscreenSurface(const IntSize& aSize,
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gfxImageFormat aFormat) = 0;
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/**
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* Beware that this method may return DrawTargets which are not fully supported
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* on the current platform and might fail silently in subtle ways. This is a massive
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* potential footgun. You should only use these methods for canvas drawing really.
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* Use extreme caution if you use them for content where you are not 100% sure we
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* support the DrawTarget we get back.
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* See SupportsAzureContentForDrawTarget.
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*/
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static already_AddRefed<DrawTarget>
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CreateDrawTargetForSurface(gfxASurface *aSurface, const mozilla::gfx::IntSize& aSize);
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/*
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* Creates a SourceSurface for a gfxASurface. This function does no caching,
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* so the caller should cache the gfxASurface if it will be used frequently.
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* The returned surface keeps a reference to aTarget, so it is OK to keep the
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* surface, even if aTarget changes.
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* aTarget should not keep a reference to the returned surface because that
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* will cause a cycle.
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*
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* This function is static so that it can be accessed from
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* PluginInstanceChild (where we can't call gfxPlatform::GetPlatform()
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* because the prefs service can only be accessed from the main process).
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*
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* aIsPlugin is used to tell the backend that they can optimize this surface
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* specifically because it's used for a plugin. This is mostly for Skia.
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*/
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static already_AddRefed<SourceSurface>
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GetSourceSurfaceForSurface(mozilla::gfx::DrawTarget *aTarget,
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gfxASurface *aSurface,
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bool aIsPlugin = false);
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static void ClearSourceSurfaceForSurface(gfxASurface *aSurface);
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static already_AddRefed<DataSourceSurface>
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GetWrappedDataSourceSurface(gfxASurface *aSurface);
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virtual already_AddRefed<mozilla::gfx::ScaledFont>
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GetScaledFontForFont(mozilla::gfx::DrawTarget* aTarget, gfxFont *aFont);
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already_AddRefed<DrawTarget>
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CreateOffscreenContentDrawTarget(const mozilla::gfx::IntSize& aSize, mozilla::gfx::SurfaceFormat aFormat);
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already_AddRefed<DrawTarget>
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CreateOffscreenCanvasDrawTarget(const mozilla::gfx::IntSize& aSize, mozilla::gfx::SurfaceFormat aFormat);
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already_AddRefed<DrawTarget>
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CreateSimilarSoftwareDrawTarget(DrawTarget* aDT, const IntSize &aSize, mozilla::gfx::SurfaceFormat aFormat);
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static already_AddRefed<DrawTarget>
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CreateDrawTargetForData(unsigned char* aData, const mozilla::gfx::IntSize& aSize,
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int32_t aStride, mozilla::gfx::SurfaceFormat aFormat);
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/**
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* Returns true if rendering to data surfaces produces the same results as
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* rendering to offscreen surfaces on this platform, making it safe to
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* render content to data surfaces. This is generally false on platforms
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* which use different backends for each type of DrawTarget.
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*/
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virtual bool CanRenderContentToDataSurface() const {
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return false;
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}
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/**
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* Returns true if we should use Azure to render content with aTarget. For
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* example, it is possible that we are using Direct2D for rendering and thus
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* using Azure. But we want to render to a CairoDrawTarget, in which case
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* SupportsAzureContent will return true but SupportsAzureContentForDrawTarget
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* will return false.
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*/
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bool SupportsAzureContentForDrawTarget(mozilla::gfx::DrawTarget* aTarget);
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bool SupportsAzureContentForType(mozilla::gfx::BackendType aType) {
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return BackendTypeBit(aType) & mContentBackendBitmask;
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}
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/// This function also lets us know if the current preferences/platform
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/// combination allows for both accelerated and not accelerated canvas
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/// implementations. If it does, and other relevant preferences are
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/// asking for it, we will examine the commands in the first few seconds
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/// of the canvas usage, and potentially change to accelerated or
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/// non-accelerated canvas.
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bool AllowOpenGLCanvas();
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virtual void InitializeSkiaCacheLimits();
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static bool AsyncPanZoomEnabled();
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virtual void GetAzureBackendInfo(mozilla::widget::InfoObject &aObj) {
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aObj.DefineProperty("AzureCanvasBackend", GetBackendName(mPreferredCanvasBackend));
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aObj.DefineProperty("AzureCanvasAccelerated", AllowOpenGLCanvas());
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aObj.DefineProperty("AzureFallbackCanvasBackend", GetBackendName(mFallbackCanvasBackend));
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aObj.DefineProperty("AzureContentBackend", GetBackendName(mContentBackend));
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}
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void GetApzSupportInfo(mozilla::widget::InfoObject& aObj);
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void GetTilesSupportInfo(mozilla::widget::InfoObject& aObj);
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// Get the default content backend that will be used with the default
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// compositor. If the compositor is known when calling this function,
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// GetContentBackendFor() should be called instead.
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mozilla::gfx::BackendType GetDefaultContentBackend() {
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return mContentBackend;
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}
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// Return the best content backend available that is compatible with the
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// given layers backend.
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virtual mozilla::gfx::BackendType GetContentBackendFor(mozilla::layers::LayersBackend aLayers) {
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return mContentBackend;
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}
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mozilla::gfx::BackendType GetPreferredCanvasBackend() {
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return mPreferredCanvasBackend;
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}
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mozilla::gfx::BackendType GetFallbackCanvasBackend() {
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return mFallbackCanvasBackend;
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}
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/*
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* Font bits
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*/
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virtual void SetupClusterBoundaries(gfxTextRun *aTextRun, const char16_t *aString);
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/**
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* Fill aListOfFonts with the results of querying the list of font names
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* that correspond to the given language group or generic font family
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* (or both, or neither).
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*/
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virtual nsresult GetFontList(nsIAtom *aLangGroup,
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const nsACString& aGenericFamily,
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nsTArray<nsString>& aListOfFonts);
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/**
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* Rebuilds the any cached system font lists
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*/
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virtual nsresult UpdateFontList();
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/**
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* Create the platform font-list object (gfxPlatformFontList concrete subclass).
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* This function is responsible to create the appropriate subclass of
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* gfxPlatformFontList *and* to call its InitFontList() method.
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*/
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virtual gfxPlatformFontList *CreatePlatformFontList() {
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NS_NOTREACHED("oops, this platform doesn't have a gfxPlatformFontList implementation");
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return nullptr;
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}
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/**
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* Resolving a font name to family name. The result MUST be in the result of GetFontList().
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* If the name doesn't in the system, aFamilyName will be empty string, but not failed.
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*/
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virtual nsresult GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);
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/**
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* Create the appropriate platform font group
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*/
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virtual gfxFontGroup*
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CreateFontGroup(const mozilla::FontFamilyList& aFontFamilyList,
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const gfxFontStyle *aStyle,
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gfxTextPerfMetrics* aTextPerf,
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gfxUserFontSet *aUserFontSet,
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gfxFloat aDevToCssSize) = 0;
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/**
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* Look up a local platform font using the full font face name.
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* (Needed to support @font-face src local().)
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* Ownership of the returned gfxFontEntry is passed to the caller,
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* who must either AddRef() or delete.
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*/
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virtual gfxFontEntry* LookupLocalFont(const nsAString& aFontName,
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uint16_t aWeight,
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int16_t aStretch,
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uint8_t aStyle);
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/**
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* Activate a platform font. (Needed to support @font-face src url().)
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* aFontData is a NS_Malloc'ed block that must be freed by this function
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* (or responsibility passed on) when it is no longer needed; the caller
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* will NOT free it.
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* Ownership of the returned gfxFontEntry is passed to the caller,
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* who must either AddRef() or delete.
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*/
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virtual gfxFontEntry* MakePlatformFont(const nsAString& aFontName,
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uint16_t aWeight,
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int16_t aStretch,
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uint8_t aStyle,
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const uint8_t* aFontData,
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uint32_t aLength);
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/**
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* Whether to allow downloadable fonts via @font-face rules
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*/
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bool DownloadableFontsEnabled();
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/**
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* True when hinting should be enabled. This setting shouldn't
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* change per gecko process, while the process is live. If so the
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* results are not defined.
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*
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* NB: this bit is only honored by the FT2 backend, currently.
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*/
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virtual bool FontHintingEnabled() { return true; }
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/**
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* True when zooming should not require reflow, so glyph metrics and
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* positioning should not be adjusted for device pixels.
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* If this is TRUE, then FontHintingEnabled() should be FALSE,
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* but the converse is not necessarily required; in particular,
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* B2G always has FontHintingEnabled FALSE, but RequiresLinearZoom
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* is only true for the browser process, not Gaia or other apps.
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*
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* Like FontHintingEnabled (above), this setting shouldn't
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* change per gecko process, while the process is live. If so the
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* results are not defined.
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*
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* NB: this bit is only honored by the FT2 backend, currently.
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*/
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virtual bool RequiresLinearZoom() { return false; }
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/**
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* Whether the frame->StyleFont().mFont.smoothing field is respected by
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* text rendering on this platform.
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*/
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virtual bool RespectsFontStyleSmoothing() const { return false; }
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/**
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* Whether to check all font cmaps during system font fallback
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*/
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bool UseCmapsDuringSystemFallback();
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/**
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* Whether to render SVG glyphs within an OpenType font wrapper
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*/
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bool OpenTypeSVGEnabled();
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/**
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* Max character length of words in the word cache
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*/
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uint32_t WordCacheCharLimit();
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/**
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* Max number of entries in word cache
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*/
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uint32_t WordCacheMaxEntries();
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/**
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* Whether to use the SIL Graphite rendering engine
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* (for fonts that include Graphite tables)
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*/
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bool UseGraphiteShaping();
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// check whether format is supported on a platform or not (if unclear, returns true)
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virtual bool IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags) { return false; }
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virtual bool DidRenderingDeviceReset(DeviceResetReason* aResetReason = nullptr) { return false; }
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// returns a list of commonly used fonts for a given character
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// these are *possible* matches, no cmap-checking is done at this level
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virtual void GetCommonFallbackFonts(uint32_t /*aCh*/, uint32_t /*aNextCh*/,
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Script /*aRunScript*/,
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nsTArray<const char*>& /*aFontList*/)
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{
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// platform-specific override, by default do nothing
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}
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// Are we in safe mode?
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static bool InSafeMode();
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static bool OffMainThreadCompositingEnabled();
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void UpdateCanUseHardwareVideoDecoding();
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// Returns a prioritized list of all available compositor backends.
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void GetCompositorBackends(bool useAcceleration, nsTArray<mozilla::layers::LayersBackend>& aBackends);
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/**
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* Is it possible to use buffer rotation. Note that these
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* check the preference, but also allow for the override to
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* disable it using DisableBufferRotation.
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*/
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static bool BufferRotationEnabled();
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static void DisableBufferRotation();
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/**
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* Are we going to try color management?
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*/
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static eCMSMode GetCMSMode();
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/**
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* Determines the rendering intent for color management.
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*
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* If the value in the pref gfx.color_management.rendering_intent is a
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* valid rendering intent as defined in gfx/qcms/qcms.h, that
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* value is returned. Otherwise, -1 is returned and the embedded intent
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* should be used.
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*
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* See bug 444014 for details.
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*/
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static int GetRenderingIntent();
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/**
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* Convert a pixel using a cms transform in an endian-aware manner.
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*
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* Sets 'out' to 'in' if transform is nullptr.
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*/
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static void TransformPixel(const Color& in, Color& out, qcms_transform *transform);
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/**
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* Return the output device ICC profile.
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*/
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static qcms_profile* GetCMSOutputProfile();
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/**
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* Return the sRGB ICC profile.
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*/
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static qcms_profile* GetCMSsRGBProfile();
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/**
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* Return sRGB -> output device transform.
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*/
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static qcms_transform* GetCMSRGBTransform();
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/**
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* Return output -> sRGB device transform.
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*/
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static qcms_transform* GetCMSInverseRGBTransform();
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/**
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* Return sRGBA -> output device transform.
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*/
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static qcms_transform* GetCMSRGBATransform();
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virtual void FontsPrefsChanged(const char *aPref);
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int32_t GetBidiNumeralOption();
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static void
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FlushFontAndWordCaches();
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/**
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* Returns a 1x1 surface that can be used to create graphics contexts
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* 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.
|
|
*/
|
|
mozilla::gfx::DrawTarget* ScreenReferenceDrawTarget() { return mScreenReferenceDrawTarget; }
|
|
|
|
virtual mozilla::gfx::SurfaceFormat Optimal2DFormatForContent(gfxContentType aContent);
|
|
|
|
virtual gfxImageFormat OptimalFormatForContent(gfxContentType aContent);
|
|
|
|
virtual gfxImageFormat GetOffscreenFormat()
|
|
{ return mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32; }
|
|
|
|
/**
|
|
* 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 mozilla::gfx::IntRect FrameCounterBounds() {
|
|
int bits = 16;
|
|
int sizeOfBit = 3;
|
|
return mozilla::gfx::IntRect(0, 0, bits * sizeOfBit, sizeOfBit);
|
|
}
|
|
|
|
mozilla::gl::SkiaGLGlue* GetSkiaGLGlue();
|
|
void PurgeSkiaGPUCache();
|
|
static void PurgeSkiaFontCache();
|
|
|
|
virtual bool IsInGonkEmulator() const { return false; }
|
|
|
|
static bool UsesOffMainThreadCompositing();
|
|
|
|
bool HasEnoughTotalSystemMemoryForSkiaGL();
|
|
|
|
/**
|
|
* 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 the software vsync rate to use.
|
|
*/
|
|
static int GetSoftwareVsyncRate();
|
|
|
|
/**
|
|
* Returns whether or not a custom vsync rate is set.
|
|
*/
|
|
static bool ForceSoftwareVsync();
|
|
|
|
/**
|
|
* Returns the default frame rate for the refresh driver / software vsync.
|
|
*/
|
|
static int GetDefaultFrameRate();
|
|
|
|
/**
|
|
* Used to test which input types are handled via APZ.
|
|
*/
|
|
virtual bool SupportsApzWheelInput() const {
|
|
return false;
|
|
}
|
|
virtual bool SupportsApzTouchInput() const {
|
|
return false;
|
|
}
|
|
bool SupportsApzDragInput() const;
|
|
|
|
virtual void FlushContentDrawing() {}
|
|
|
|
// 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 gfxPrefs::PerfWarnings().
|
|
* Extracted into a function to avoid including gfxPrefs.h from this file.
|
|
*/
|
|
static bool PerfWarnings();
|
|
|
|
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;
|
|
}
|
|
|
|
uint64_t GetDeviceCounter() const {
|
|
return mDeviceCounter;
|
|
}
|
|
|
|
/**
|
|
* 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; }
|
|
|
|
/**
|
|
* 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);
|
|
|
|
protected:
|
|
gfxPlatform();
|
|
virtual ~gfxPlatform();
|
|
|
|
virtual void InitAcceleration();
|
|
|
|
/**
|
|
* 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.
|
|
bool AccelerateLayersByDefault();
|
|
|
|
// Returns a prioritized list of available compositor backends for acceleration.
|
|
virtual void GetAcceleratedCompositorBackends(nsTArray<mozilla::layers::LayersBackend>& aBackends);
|
|
|
|
/**
|
|
* 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(uint32_t aCanvasBitmask, mozilla::gfx::BackendType aCanvasDefault,
|
|
uint32_t aContentBitmask, mozilla::gfx::BackendType aContentDefault);
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* 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);
|
|
|
|
static already_AddRefed<mozilla::gfx::ScaledFont>
|
|
GetScaledFontForFontWithCairoSkia(mozilla::gfx::DrawTarget* aTarget, gfxFont* aFont);
|
|
|
|
virtual bool CanUseHardwareVideoDecoding();
|
|
|
|
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;
|
|
|
|
// max character limit for words in word cache
|
|
int32_t mWordCacheCharLimit;
|
|
|
|
// max number of entries in word cache
|
|
int32_t mWordCacheMaxEntries;
|
|
|
|
uint64_t mTotalSystemMemory;
|
|
|
|
// 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 void CreateCMSOutputProfile();
|
|
|
|
static void GetCMSOutputProfileData(void *&mem, size_t &size);
|
|
|
|
friend void RecordingPrefChanged(const char *aPrefName, void *aClosure);
|
|
|
|
virtual void GetPlatformCMSOutputProfile(void *&mem, size_t &size);
|
|
|
|
/**
|
|
* 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();
|
|
|
|
RefPtr<gfxASurface> mScreenReferenceSurface;
|
|
nsCOMPtr<nsIObserver> mSRGBOverrideObserver;
|
|
nsCOMPtr<nsIObserver> mFontPrefsObserver;
|
|
nsCOMPtr<nsIObserver> 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;
|
|
// 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;
|
|
|
|
RefPtr<mozilla::gfx::DrawEventRecorder> mRecorder;
|
|
RefPtr<mozilla::gl::SkiaGLGlue> mSkiaGlue;
|
|
|
|
// 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;
|
|
|
|
// Generation number for devices that ClientLayerManagers might depend on.
|
|
uint64_t mDeviceCounter;
|
|
|
|
// An instance of gfxSkipChars which is empty. It is used as the
|
|
// basis for error-case iterators.
|
|
const gfxSkipChars kEmptySkipChars;
|
|
};
|
|
|
|
#endif /* GFX_PLATFORM_H */
|