1/*
2 * Copyright (C) 2018 Apple Inc. All rights reserved.
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 INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "Timer.h"
29#include <wtf/HashMap.h>
30#include <wtf/HashSet.h>
31
32#if PLATFORM(MAC)
33#include <CoreGraphics/CGDisplayConfiguration.h>
34#include <OpenGL/CGLTypes.h>
35#endif
36
37namespace WebCore {
38
39const unsigned MaxContexts = 16;
40
41class GraphicsContext3D;
42class HostWindow;
43
44using PlatformDisplayID = uint32_t;
45
46#if HAVE(APPLE_GRAPHICS_CONTROL)
47WEBCORE_EXPORT bool hasLowAndHighPowerGPUs();
48#endif
49
50class GraphicsContext3DManager {
51 friend NeverDestroyed<GraphicsContext3DManager>;
52public:
53 static GraphicsContext3DManager& sharedManager();
54
55 void addContext(GraphicsContext3D*, HostWindow*);
56 void removeContext(GraphicsContext3D*);
57
58 HostWindow* hostWindowForContext(GraphicsContext3D*) const;
59
60 void addContextRequiringHighPerformance(GraphicsContext3D*);
61 void removeContextRequiringHighPerformance(GraphicsContext3D*);
62
63 void recycleContextIfNecessary();
64 bool hasTooManyContexts() const { return m_contexts.size() >= MaxContexts; }
65
66 void updateAllContexts();
67
68#if PLATFORM(MAC)
69 void screenDidChange(PlatformDisplayID, const HostWindow*);
70 WEBCORE_EXPORT static void displayWasReconfigured(CGDirectDisplayID, CGDisplayChangeSummaryFlags, void*);
71#endif
72
73private:
74 GraphicsContext3DManager()
75 : m_disableHighPerformanceGPUTimer(*this, &GraphicsContext3DManager::disableHighPerformanceGPUTimerFired)
76 {
77 }
78
79 void updateHighPerformanceState();
80 void disableHighPerformanceGPUTimerFired();
81
82 Vector<GraphicsContext3D*> m_contexts;
83 HashMap<GraphicsContext3D*, HostWindow*> m_contextWindowMap;
84 HashSet<GraphicsContext3D*> m_contextsRequiringHighPerformance;
85
86 Timer m_disableHighPerformanceGPUTimer;
87 bool m_requestingHighPerformance { false };
88};
89
90}
91