1/*
2 * Copyright (C) 2017 Igalia S.L.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "HardwareAccelerationManager.h"
28
29#include "WaylandCompositor.h"
30#include <WebCore/NotImplemented.h>
31#include <WebCore/PlatformDisplay.h>
32
33#if USE(REDIRECTED_XCOMPOSITE_WINDOW)
34#include <WebCore/PlatformDisplayX11.h>
35#endif
36
37namespace WebKit {
38using namespace WebCore;
39
40HardwareAccelerationManager& HardwareAccelerationManager::singleton()
41{
42 static NeverDestroyed<HardwareAccelerationManager> manager;
43 return manager;
44}
45
46HardwareAccelerationManager::HardwareAccelerationManager()
47 : m_canUseHardwareAcceleration(true)
48 , m_forceHardwareAcceleration(false)
49{
50#if !ENABLE(OPENGL)
51 m_canUseHardwareAcceleration = false;
52 return;
53#endif
54
55 const char* disableCompositing = getenv("WEBKIT_DISABLE_COMPOSITING_MODE");
56 if (disableCompositing && strcmp(disableCompositing, "0")) {
57 m_canUseHardwareAcceleration = false;
58 return;
59 }
60
61#if USE(REDIRECTED_XCOMPOSITE_WINDOW)
62 if (PlatformDisplay::sharedDisplay().type() == PlatformDisplay::Type::X11) {
63 auto& display = downcast<PlatformDisplayX11>(PlatformDisplay::sharedDisplay());
64 Optional<int> damageBase, errorBase;
65 if (!display.supportsXComposite() || !display.supportsXDamage(damageBase, errorBase)) {
66 m_canUseHardwareAcceleration = false;
67 return;
68 }
69 }
70#endif
71
72#if PLATFORM(WAYLAND) && USE(EGL)
73 if (PlatformDisplay::sharedDisplay().type() == PlatformDisplay::Type::Wayland) {
74 if (!WaylandCompositor::singleton().isRunning()) {
75 m_canUseHardwareAcceleration = false;
76 return;
77 }
78 }
79#endif
80
81 const char* forceCompositing = getenv("WEBKIT_FORCE_COMPOSITING_MODE");
82 if (forceCompositing && strcmp(forceCompositing, "0"))
83 m_forceHardwareAcceleration = true;
84}
85
86} // namespace WebKit
87