900 lines
27 KiB
C++
900 lines
27 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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#define PANGO_ENABLE_BACKEND
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#define PANGO_ENABLE_ENGINE
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#include "gfxPlatformGtk.h"
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#include "prenv.h"
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#include "nsUnicharUtils.h"
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#include "nsUnicodeProperties.h"
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#include "gfx2DGlue.h"
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#include "gfxFcPlatformFontList.h"
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#include "gfxFontconfigUtils.h"
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#include "gfxFontconfigFonts.h"
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#include "gfxConfig.h"
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#include "gfxContext.h"
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#include "gfxUserFontSet.h"
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#include "gfxUtils.h"
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#include "gfxFT2FontBase.h"
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#include "gfxPrefs.h"
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#include "VsyncSource.h"
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#include "mozilla/Atomics.h"
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#include "mozilla/Monitor.h"
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#include "base/task.h"
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#include "base/thread.h"
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#include "base/message_loop.h"
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#include "mozilla/gfx/Logging.h"
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#include "mozilla/gfx/2D.h"
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#include "cairo.h"
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#include <gtk/gtk.h>
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#include "gfxImageSurface.h"
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#ifdef MOZ_X11
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#include <gdk/gdkx.h>
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#include "gfxXlibSurface.h"
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#include "cairo-xlib.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/X11Util.h"
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#ifdef GL_PROVIDER_GLX
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#include "GLContextProvider.h"
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#include "GLContextGLX.h"
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#include "GLXLibrary.h"
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#endif
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/* Undefine the Status from Xlib since it will conflict with system headers on OSX */
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#if defined(__APPLE__) && defined(Status)
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#undef Status
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#endif
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#endif /* MOZ_X11 */
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#include <fontconfig/fontconfig.h>
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#include "nsMathUtils.h"
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#define GDK_PIXMAP_SIZE_MAX 32767
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#define GFX_PREF_MAX_GENERIC_SUBSTITUTIONS "gfx.font_rendering.fontconfig.max_generic_substitutions"
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using namespace mozilla;
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using namespace mozilla::gfx;
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using namespace mozilla::unicode;
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gfxFontconfigUtils *gfxPlatformGtk::sFontconfigUtils = nullptr;
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#if (MOZ_WIDGET_GTK == 2)
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static cairo_user_data_key_t cairo_gdk_drawable_key;
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#endif
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bool gfxPlatformGtk::sUseFcFontList = false;
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gfxPlatformGtk::gfxPlatformGtk()
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{
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gtk_init(nullptr, nullptr);
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sUseFcFontList = mozilla::Preferences::GetBool("gfx.font_rendering.fontconfig.fontlist.enabled");
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if (!sUseFcFontList && !sFontconfigUtils) {
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sFontconfigUtils = gfxFontconfigUtils::GetFontconfigUtils();
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}
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mMaxGenericSubstitutions = UNINITIALIZED_VALUE;
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#ifdef MOZ_X11
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if (XRE_IsParentProcess()) {
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if (GDK_IS_X11_DISPLAY(gdk_display_get_default()) &&
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mozilla::Preferences::GetBool("gfx.xrender.enabled"))
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{
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gfxVars::SetUseXRender(true);
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}
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}
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#endif
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uint32_t canvasMask = BackendTypeBit(BackendType::CAIRO);
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uint32_t contentMask = BackendTypeBit(BackendType::CAIRO);
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#ifdef USE_SKIA
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canvasMask |= BackendTypeBit(BackendType::SKIA);
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contentMask |= BackendTypeBit(BackendType::SKIA);
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#endif
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InitBackendPrefs(canvasMask, BackendType::CAIRO,
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contentMask, BackendType::CAIRO);
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#ifdef MOZ_X11
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if (GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
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mCompositorDisplay = XOpenDisplay(nullptr);
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MOZ_ASSERT(mCompositorDisplay, "Failed to create compositor display!");
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} else {
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mCompositorDisplay = nullptr;
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}
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#endif // MOZ_X11
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}
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gfxPlatformGtk::~gfxPlatformGtk()
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{
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if (!sUseFcFontList) {
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gfxFontconfigUtils::Shutdown();
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sFontconfigUtils = nullptr;
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gfxPangoFontGroup::Shutdown();
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}
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#ifdef MOZ_X11
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if (mCompositorDisplay) {
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XCloseDisplay(mCompositorDisplay);
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}
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#endif // MOZ_X11
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}
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void
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gfxPlatformGtk::FlushContentDrawing()
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{
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if (gfxVars::UseXRender()) {
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XFlush(DefaultXDisplay());
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}
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}
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already_AddRefed<gfxASurface>
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gfxPlatformGtk::CreateOffscreenSurface(const IntSize& aSize,
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gfxImageFormat aFormat)
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{
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if (!Factory::AllowedSurfaceSize(aSize)) {
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return nullptr;
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}
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RefPtr<gfxASurface> newSurface;
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bool needsClear = true;
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#ifdef MOZ_X11
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// XXX we really need a different interface here, something that passes
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// in more context, including the display and/or target surface type that
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// we should try to match
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GdkScreen *gdkScreen = gdk_screen_get_default();
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if (gdkScreen) {
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// When forcing PaintedLayers to use image surfaces for content,
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// force creation of gfxImageSurface surfaces.
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if (gfxVars::UseXRender()) {
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Screen *screen = gdk_x11_screen_get_xscreen(gdkScreen);
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XRenderPictFormat* xrenderFormat =
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gfxXlibSurface::FindRenderFormat(DisplayOfScreen(screen),
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aFormat);
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if (xrenderFormat) {
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newSurface = gfxXlibSurface::Create(screen, xrenderFormat,
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aSize);
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}
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}
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}
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#endif
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if (!newSurface) {
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// We couldn't create a native surface for whatever reason;
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// e.g., no display, no RENDER, bad size, etc.
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// Fall back to image surface for the data.
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newSurface = new gfxImageSurface(aSize, aFormat);
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// The gfxImageSurface ctor zeroes this for us, no need to
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// waste time clearing again
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needsClear = false;
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}
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if (newSurface->CairoStatus()) {
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newSurface = nullptr; // surface isn't valid for some reason
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}
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if (newSurface && needsClear) {
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gfxUtils::ClearThebesSurface(newSurface);
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}
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return newSurface.forget();
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}
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nsresult
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gfxPlatformGtk::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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if (sUseFcFontList) {
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gfxPlatformFontList::PlatformFontList()->GetFontList(aLangGroup,
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aGenericFamily,
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aListOfFonts);
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return NS_OK;
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}
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return sFontconfigUtils->GetFontList(aLangGroup,
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aGenericFamily,
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aListOfFonts);
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}
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nsresult
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gfxPlatformGtk::UpdateFontList()
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{
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if (sUseFcFontList) {
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gfxPlatformFontList::PlatformFontList()->UpdateFontList();
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return NS_OK;
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}
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return sFontconfigUtils->UpdateFontList();
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}
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// xxx - this is ubuntu centric, need to go through other distros and flesh
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// out a more general list
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static const char kFontDejaVuSans[] = "DejaVu Sans";
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static const char kFontDejaVuSerif[] = "DejaVu Serif";
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static const char kFontFreeSans[] = "FreeSans";
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static const char kFontFreeSerif[] = "FreeSerif";
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static const char kFontTakaoPGothic[] = "TakaoPGothic";
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static const char kFontTwemojiMozilla[] = "Twemoji Mozilla";
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static const char kFontDroidSansFallback[] = "Droid Sans Fallback";
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static const char kFontWenQuanYiMicroHei[] = "WenQuanYi Micro Hei";
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static const char kFontNanumGothic[] = "NanumGothic";
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void
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gfxPlatformGtk::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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EmojiPresentation emoji = GetEmojiPresentation(aCh);
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if (emoji != EmojiPresentation::TextOnly) {
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if (aNextCh == kVariationSelector16 ||
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(aNextCh != kVariationSelector15 &&
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emoji == EmojiPresentation::EmojiDefault)) {
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// if char is followed by VS16, try for a color emoji glyph
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aFontList.AppendElement(kFontTwemojiMozilla);
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}
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}
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aFontList.AppendElement(kFontDejaVuSerif);
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aFontList.AppendElement(kFontFreeSerif);
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aFontList.AppendElement(kFontDejaVuSans);
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aFontList.AppendElement(kFontFreeSans);
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// add fonts for CJK ranges
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// xxx - this isn't really correct, should use the same CJK font ordering
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// as the pref font code
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if (aCh >= 0x3000 &&
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((aCh < 0xe000) ||
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(aCh >= 0xf900 && aCh < 0xfff0) ||
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((aCh >> 16) == 2))) {
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aFontList.AppendElement(kFontTakaoPGothic);
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aFontList.AppendElement(kFontDroidSansFallback);
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aFontList.AppendElement(kFontWenQuanYiMicroHei);
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aFontList.AppendElement(kFontNanumGothic);
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}
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}
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gfxPlatformFontList*
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gfxPlatformGtk::CreatePlatformFontList()
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{
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gfxPlatformFontList* list = new gfxFcPlatformFontList();
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if (NS_SUCCEEDED(list->InitFontList())) {
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return list;
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}
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gfxPlatformFontList::Shutdown();
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return nullptr;
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}
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nsresult
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gfxPlatformGtk::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
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{
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if (sUseFcFontList) {
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gfxPlatformFontList::PlatformFontList()->
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GetStandardFamilyName(aFontName, aFamilyName);
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return NS_OK;
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}
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return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
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}
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gfxFontGroup *
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gfxPlatformGtk::CreateFontGroup(const 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)
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{
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if (sUseFcFontList) {
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return new gfxFontGroup(aFontFamilyList, aStyle, aTextPerf,
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aUserFontSet, aDevToCssSize);
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}
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return new gfxPangoFontGroup(aFontFamilyList, aStyle,
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aUserFontSet, aDevToCssSize);
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}
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gfxFontEntry*
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gfxPlatformGtk::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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if (sUseFcFontList) {
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gfxPlatformFontList* pfl = gfxPlatformFontList::PlatformFontList();
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return pfl->LookupLocalFont(aFontName, aWeight, aStretch,
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aStyle);
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}
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return gfxPangoFontGroup::NewFontEntry(aFontName, aWeight,
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aStretch, aStyle);
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}
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gfxFontEntry*
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gfxPlatformGtk::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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if (sUseFcFontList) {
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gfxPlatformFontList* pfl = gfxPlatformFontList::PlatformFontList();
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return pfl->MakePlatformFont(aFontName, aWeight, aStretch,
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aStyle, aFontData, aLength);
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}
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// passing ownership of the font data to the new font entry
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return gfxPangoFontGroup::NewFontEntry(aFontName, aWeight,
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aStretch, aStyle,
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aFontData, aLength);
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}
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bool
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gfxPlatformGtk::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
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{
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// check for strange format flags
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NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
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"strange font format hint set");
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// accept supported formats
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// Pango doesn't apply features from AAT TrueType extensions.
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// Assume that if this is the only SFNT format specified,
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// then AAT extensions are required for complex script support.
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if (aFormatFlags & gfxUserFontSet::FLAG_FORMATS_COMMON) {
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return true;
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}
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// reject all other formats, known and unknown
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if (aFormatFlags != 0) {
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return false;
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}
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// no format hint set, need to look at data
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return true;
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}
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static int32_t sDPI = 0;
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int32_t
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gfxPlatformGtk::GetDPI()
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{
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if (!sDPI) {
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// Make sure init is run so we have a resolution
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GdkScreen *screen = gdk_screen_get_default();
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gtk_settings_get_for_screen(screen);
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sDPI = int32_t(round(gdk_screen_get_resolution(screen)));
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if (sDPI <= 0) {
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// Fall back to something sane
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sDPI = 96;
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}
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}
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return sDPI;
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}
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double
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gfxPlatformGtk::GetDPIScale()
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{
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// Integer scale factors work well with GTK window scaling, image scaling,
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// and pixel alignment, but there is a range where 1 is too small and 2 is
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// too big. An additional step of 1.5 is added because this is common
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// scale on WINNT and at this ratio the advantages of larger rendering
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// outweigh the disadvantages from scaling and pixel mis-alignment.
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int32_t dpi = GetDPI();
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if (dpi < 144) {
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return 1.0;
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} else if (dpi < 168) {
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return 1.5;
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} else {
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return round(dpi/96.0);
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}
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}
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bool
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gfxPlatformGtk::UseImageOffscreenSurfaces()
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{
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return GetDefaultContentBackend() != mozilla::gfx::BackendType::CAIRO ||
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gfxPrefs::UseImageOffscreenSurfaces();
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}
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gfxImageFormat
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gfxPlatformGtk::GetOffscreenFormat()
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{
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// Make sure there is a screen
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GdkScreen *screen = gdk_screen_get_default();
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if (screen && gdk_visual_get_depth(gdk_visual_get_system()) == 16) {
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return SurfaceFormat::R5G6B5_UINT16;
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}
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return SurfaceFormat::X8R8G8B8_UINT32;
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}
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void gfxPlatformGtk::FontsPrefsChanged(const char *aPref)
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{
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// only checking for generic substitions, pass other changes up
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if (strcmp(GFX_PREF_MAX_GENERIC_SUBSTITUTIONS, aPref)) {
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gfxPlatform::FontsPrefsChanged(aPref);
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return;
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}
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mMaxGenericSubstitutions = UNINITIALIZED_VALUE;
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if (sUseFcFontList) {
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gfxFcPlatformFontList* pfl = gfxFcPlatformFontList::PlatformFontList();
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pfl->ClearGenericMappings();
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FlushFontAndWordCaches();
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}
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}
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uint32_t gfxPlatformGtk::MaxGenericSubstitions()
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{
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if (mMaxGenericSubstitutions == UNINITIALIZED_VALUE) {
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mMaxGenericSubstitutions =
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Preferences::GetInt(GFX_PREF_MAX_GENERIC_SUBSTITUTIONS, 3);
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if (mMaxGenericSubstitutions < 0) {
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mMaxGenericSubstitutions = 3;
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}
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}
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return uint32_t(mMaxGenericSubstitutions);
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}
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void
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gfxPlatformGtk::GetPlatformCMSOutputProfile(void *&mem, size_t &size)
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{
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mem = nullptr;
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size = 0;
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#ifdef MOZ_X11
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GdkDisplay *display = gdk_display_get_default();
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if (!GDK_IS_X11_DISPLAY(display))
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return;
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const char EDID1_ATOM_NAME[] = "XFree86_DDC_EDID1_RAWDATA";
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const char ICC_PROFILE_ATOM_NAME[] = "_ICC_PROFILE";
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Atom edidAtom, iccAtom;
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Display *dpy = GDK_DISPLAY_XDISPLAY(display);
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// In xpcshell tests, we never initialize X and hence don't have a Display.
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// In this case, there's no output colour management to be done, so we just
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// return with nullptr.
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if (!dpy)
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return;
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Window root = gdk_x11_get_default_root_xwindow();
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Atom retAtom;
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int retFormat;
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unsigned long retLength, retAfter;
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unsigned char *retProperty ;
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iccAtom = XInternAtom(dpy, ICC_PROFILE_ATOM_NAME, TRUE);
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if (iccAtom) {
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// read once to get size, once for the data
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if (Success == XGetWindowProperty(dpy, root, iccAtom,
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0, INT_MAX /* length */,
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False, AnyPropertyType,
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&retAtom, &retFormat, &retLength,
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&retAfter, &retProperty)) {
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if (retLength > 0) {
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void *buffer = malloc(retLength);
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if (buffer) {
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memcpy(buffer, retProperty, retLength);
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mem = buffer;
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size = retLength;
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}
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}
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XFree(retProperty);
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if (size > 0) {
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#ifdef DEBUG_tor
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fprintf(stderr,
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"ICM profile read from %s successfully\n",
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ICC_PROFILE_ATOM_NAME);
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#endif
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return;
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}
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}
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}
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edidAtom = XInternAtom(dpy, EDID1_ATOM_NAME, TRUE);
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if (edidAtom) {
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if (Success == XGetWindowProperty(dpy, root, edidAtom, 0, 32,
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False, AnyPropertyType,
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&retAtom, &retFormat, &retLength,
|
|
&retAfter, &retProperty)) {
|
|
double gamma;
|
|
qcms_CIE_xyY whitePoint;
|
|
qcms_CIE_xyYTRIPLE primaries;
|
|
|
|
if (retLength != 128) {
|
|
#ifdef DEBUG_tor
|
|
fprintf(stderr, "Short EDID data\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
// Format documented in "VESA E-EDID Implementation Guide"
|
|
|
|
gamma = (100 + retProperty[0x17]) / 100.0;
|
|
whitePoint.x = ((retProperty[0x21] << 2) |
|
|
(retProperty[0x1a] >> 2 & 3)) / 1024.0;
|
|
whitePoint.y = ((retProperty[0x22] << 2) |
|
|
(retProperty[0x1a] >> 0 & 3)) / 1024.0;
|
|
whitePoint.Y = 1.0;
|
|
|
|
primaries.red.x = ((retProperty[0x1b] << 2) |
|
|
(retProperty[0x19] >> 6 & 3)) / 1024.0;
|
|
primaries.red.y = ((retProperty[0x1c] << 2) |
|
|
(retProperty[0x19] >> 4 & 3)) / 1024.0;
|
|
primaries.red.Y = 1.0;
|
|
|
|
primaries.green.x = ((retProperty[0x1d] << 2) |
|
|
(retProperty[0x19] >> 2 & 3)) / 1024.0;
|
|
primaries.green.y = ((retProperty[0x1e] << 2) |
|
|
(retProperty[0x19] >> 0 & 3)) / 1024.0;
|
|
primaries.green.Y = 1.0;
|
|
|
|
primaries.blue.x = ((retProperty[0x1f] << 2) |
|
|
(retProperty[0x1a] >> 6 & 3)) / 1024.0;
|
|
primaries.blue.y = ((retProperty[0x20] << 2) |
|
|
(retProperty[0x1a] >> 4 & 3)) / 1024.0;
|
|
primaries.blue.Y = 1.0;
|
|
|
|
XFree(retProperty);
|
|
|
|
#ifdef DEBUG_tor
|
|
fprintf(stderr, "EDID gamma: %f\n", gamma);
|
|
fprintf(stderr, "EDID whitepoint: %f %f %f\n",
|
|
whitePoint.x, whitePoint.y, whitePoint.Y);
|
|
fprintf(stderr, "EDID primaries: [%f %f %f] [%f %f %f] [%f %f %f]\n",
|
|
primaries.Red.x, primaries.Red.y, primaries.Red.Y,
|
|
primaries.Green.x, primaries.Green.y, primaries.Green.Y,
|
|
primaries.Blue.x, primaries.Blue.y, primaries.Blue.Y);
|
|
#endif
|
|
|
|
qcms_data_create_rgb_with_gamma(whitePoint, primaries, gamma, &mem, &size);
|
|
|
|
#ifdef DEBUG_tor
|
|
if (size > 0) {
|
|
fprintf(stderr,
|
|
"ICM profile read from %s successfully\n",
|
|
EDID1_ATOM_NAME);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
#if (MOZ_WIDGET_GTK == 2)
|
|
void
|
|
gfxPlatformGtk::SetGdkDrawable(cairo_surface_t *target,
|
|
GdkDrawable *drawable)
|
|
{
|
|
if (cairo_surface_status(target))
|
|
return;
|
|
|
|
g_object_ref(drawable);
|
|
|
|
cairo_surface_set_user_data (target,
|
|
&cairo_gdk_drawable_key,
|
|
drawable,
|
|
g_object_unref);
|
|
}
|
|
|
|
GdkDrawable *
|
|
gfxPlatformGtk::GetGdkDrawable(cairo_surface_t *target)
|
|
{
|
|
if (cairo_surface_status(target))
|
|
return nullptr;
|
|
|
|
GdkDrawable *result;
|
|
|
|
result = (GdkDrawable*) cairo_surface_get_user_data (target,
|
|
&cairo_gdk_drawable_key);
|
|
if (result)
|
|
return result;
|
|
|
|
#ifdef MOZ_X11
|
|
if (cairo_surface_get_type(target) != CAIRO_SURFACE_TYPE_XLIB)
|
|
return nullptr;
|
|
|
|
// try looking it up in gdk's table
|
|
result = (GdkDrawable*) gdk_xid_table_lookup(cairo_xlib_surface_get_drawable(target));
|
|
if (result) {
|
|
SetGdkDrawable(target, result);
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<ScaledFont>
|
|
gfxPlatformGtk::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
|
|
{
|
|
switch (aTarget->GetBackendType()) {
|
|
case BackendType::CAIRO:
|
|
case BackendType::SKIA:
|
|
if (aFont->GetType() == gfxFont::FONT_TYPE_FONTCONFIG) {
|
|
gfxFontconfigFontBase* fcFont = static_cast<gfxFontconfigFontBase*>(aFont);
|
|
return Factory::CreateScaledFontForFontconfigFont(
|
|
fcFont->GetCairoScaledFont(),
|
|
fcFont->GetPattern(),
|
|
fcFont->GetAdjustedSize());
|
|
}
|
|
MOZ_FALLTHROUGH;
|
|
default:
|
|
return GetScaledFontForFontWithCairoSkia(aTarget, aFont);
|
|
}
|
|
}
|
|
|
|
#ifdef GL_PROVIDER_GLX
|
|
|
|
class GLXVsyncSource final : public VsyncSource
|
|
{
|
|
public:
|
|
GLXVsyncSource()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
mGlobalDisplay = new GLXDisplay();
|
|
}
|
|
|
|
virtual ~GLXVsyncSource()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
}
|
|
|
|
virtual Display& GetGlobalDisplay() override
|
|
{
|
|
return *mGlobalDisplay;
|
|
}
|
|
|
|
class GLXDisplay final : public VsyncSource::Display
|
|
{
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GLXDisplay)
|
|
|
|
public:
|
|
GLXDisplay() : mGLContext(nullptr)
|
|
, mXDisplay(nullptr)
|
|
, mSetupLock("GLXVsyncSetupLock")
|
|
, mVsyncThread("GLXVsyncThread")
|
|
, mVsyncTask(nullptr)
|
|
, mVsyncEnabledLock("GLXVsyncEnabledLock")
|
|
, mVsyncEnabled(false)
|
|
{
|
|
}
|
|
|
|
// Sets up the display's GL context on a worker thread.
|
|
// Required as GLContexts may only be used by the creating thread.
|
|
// Returns true if setup was a success.
|
|
bool Setup()
|
|
{
|
|
MonitorAutoLock lock(mSetupLock);
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
if (!mVsyncThread.Start())
|
|
return false;
|
|
|
|
RefPtr<Runnable> vsyncSetup = NewRunnableMethod(this, &GLXDisplay::SetupGLContext);
|
|
mVsyncThread.message_loop()->PostTask(vsyncSetup.forget());
|
|
// Wait until the setup has completed.
|
|
lock.Wait();
|
|
return mGLContext != nullptr;
|
|
}
|
|
|
|
// Called on the Vsync thread to setup the GL context.
|
|
void SetupGLContext()
|
|
{
|
|
MonitorAutoLock lock(mSetupLock);
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
MOZ_ASSERT(!mGLContext, "GLContext already setup!");
|
|
|
|
// Create video sync timer on a separate Display to prevent locking the
|
|
// main thread X display.
|
|
mXDisplay = XOpenDisplay(nullptr);
|
|
if (!mXDisplay) {
|
|
lock.NotifyAll();
|
|
return;
|
|
}
|
|
|
|
// Most compositors wait for vsync events on the root window.
|
|
Window root = DefaultRootWindow(mXDisplay);
|
|
int screen = DefaultScreen(mXDisplay);
|
|
|
|
ScopedXFree<GLXFBConfig> cfgs;
|
|
GLXFBConfig config;
|
|
int visid;
|
|
if (!gl::GLContextGLX::FindFBConfigForWindow(mXDisplay, screen, root,
|
|
&cfgs, &config, &visid)) {
|
|
lock.NotifyAll();
|
|
return;
|
|
}
|
|
|
|
mGLContext = gl::GLContextGLX::CreateGLContext(
|
|
gl::CreateContextFlags::NONE,
|
|
gl::SurfaceCaps::Any(),
|
|
nullptr,
|
|
false,
|
|
mXDisplay,
|
|
root,
|
|
config,
|
|
false);
|
|
|
|
if (!mGLContext) {
|
|
lock.NotifyAll();
|
|
return;
|
|
}
|
|
|
|
mGLContext->MakeCurrent();
|
|
|
|
// Test that SGI_video_sync lets us get the counter.
|
|
unsigned int syncCounter = 0;
|
|
if (gl::sGLXLibrary.xGetVideoSync(&syncCounter) != 0) {
|
|
mGLContext = nullptr;
|
|
}
|
|
|
|
lock.NotifyAll();
|
|
}
|
|
|
|
virtual void EnableVsync() override
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mGLContext, "GLContext not setup!");
|
|
|
|
MonitorAutoLock lock(mVsyncEnabledLock);
|
|
if (mVsyncEnabled) {
|
|
return;
|
|
}
|
|
mVsyncEnabled = true;
|
|
|
|
// If the task has not nulled itself out, it hasn't yet realized
|
|
// that vsync was disabled earlier, so continue its execution.
|
|
if (!mVsyncTask) {
|
|
mVsyncTask = NewRunnableMethod(this, &GLXDisplay::RunVsync);
|
|
RefPtr<Runnable> addrefedTask = mVsyncTask;
|
|
mVsyncThread.message_loop()->PostTask(addrefedTask.forget());
|
|
}
|
|
}
|
|
|
|
virtual void DisableVsync() override
|
|
{
|
|
MonitorAutoLock lock(mVsyncEnabledLock);
|
|
mVsyncEnabled = false;
|
|
}
|
|
|
|
virtual bool IsVsyncEnabled() override
|
|
{
|
|
MonitorAutoLock lock(mVsyncEnabledLock);
|
|
return mVsyncEnabled;
|
|
}
|
|
|
|
virtual void Shutdown() override
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
DisableVsync();
|
|
|
|
// Cleanup thread-specific resources before shutting down.
|
|
RefPtr<Runnable> shutdownTask = NewRunnableMethod(this, &GLXDisplay::Cleanup);
|
|
mVsyncThread.message_loop()->PostTask(shutdownTask.forget());
|
|
|
|
// Stop, waiting for the cleanup task to finish execution.
|
|
mVsyncThread.Stop();
|
|
}
|
|
|
|
private:
|
|
virtual ~GLXDisplay()
|
|
{
|
|
}
|
|
|
|
void RunVsync()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
mGLContext->MakeCurrent();
|
|
|
|
unsigned int syncCounter = 0;
|
|
gl::sGLXLibrary.xGetVideoSync(&syncCounter);
|
|
for (;;) {
|
|
{
|
|
MonitorAutoLock lock(mVsyncEnabledLock);
|
|
if (!mVsyncEnabled) {
|
|
mVsyncTask = nullptr;
|
|
return;
|
|
}
|
|
}
|
|
|
|
TimeStamp lastVsync = TimeStamp::Now();
|
|
bool useSoftware = false;
|
|
|
|
// Wait until the video sync counter reaches the next value by waiting
|
|
// until the parity of the counter value changes.
|
|
unsigned int nextSync = syncCounter + 1;
|
|
int status;
|
|
if ((status = gl::sGLXLibrary.xWaitVideoSync(2, nextSync % 2, &syncCounter)) != 0) {
|
|
gfxWarningOnce() << "glXWaitVideoSync returned " << status;
|
|
useSoftware = true;
|
|
}
|
|
|
|
if (syncCounter == (nextSync - 1)) {
|
|
gfxWarningOnce() << "glXWaitVideoSync failed to increment the sync counter.";
|
|
useSoftware = true;
|
|
}
|
|
|
|
if (useSoftware) {
|
|
double remaining = (1000.f / 60.f) -
|
|
(TimeStamp::Now() - lastVsync).ToMilliseconds();
|
|
if (remaining > 0) {
|
|
PlatformThread::Sleep(remaining);
|
|
}
|
|
}
|
|
|
|
lastVsync = TimeStamp::Now();
|
|
NotifyVsync(lastVsync);
|
|
}
|
|
}
|
|
|
|
void Cleanup() {
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
|
|
mGLContext = nullptr;
|
|
XCloseDisplay(mXDisplay);
|
|
}
|
|
|
|
// Owned by the vsync thread.
|
|
RefPtr<gl::GLContextGLX> mGLContext;
|
|
_XDisplay* mXDisplay;
|
|
Monitor mSetupLock;
|
|
base::Thread mVsyncThread;
|
|
RefPtr<Runnable> mVsyncTask;
|
|
Monitor mVsyncEnabledLock;
|
|
bool mVsyncEnabled;
|
|
};
|
|
private:
|
|
// We need a refcounted VsyncSource::Display to use chromium IPC runnables.
|
|
RefPtr<GLXDisplay> mGlobalDisplay;
|
|
};
|
|
|
|
already_AddRefed<gfx::VsyncSource>
|
|
gfxPlatformGtk::CreateHardwareVsyncSource()
|
|
{
|
|
// Only use GLX vsync when the OpenGL compositor is being used.
|
|
// The extra cost of initializing a GLX context while blocking the main
|
|
// thread is not worth it when using basic composition.
|
|
if (gfxConfig::IsEnabled(Feature::HW_COMPOSITING)) {
|
|
if (gl::sGLXLibrary.SupportsVideoSync()) {
|
|
RefPtr<VsyncSource> vsyncSource = new GLXVsyncSource();
|
|
VsyncSource::Display& display = vsyncSource->GetGlobalDisplay();
|
|
if (!static_cast<GLXVsyncSource::GLXDisplay&>(display).Setup()) {
|
|
NS_WARNING("Failed to setup GLContext, falling back to software vsync.");
|
|
return gfxPlatform::CreateHardwareVsyncSource();
|
|
}
|
|
return vsyncSource.forget();
|
|
}
|
|
NS_WARNING("SGI_video_sync unsupported. Falling back to software vsync.");
|
|
}
|
|
return gfxPlatform::CreateHardwareVsyncSource();
|
|
}
|
|
|
|
bool
|
|
gfxPlatformGtk::SupportsApzTouchInput() const
|
|
{
|
|
int value = gfxPrefs::TouchEventsEnabled();
|
|
return value == 1 || value == 2;
|
|
}
|
|
|
|
#endif
|