GraphicsContext3DManager.h [plain text]
#pragma once
#include "Timer.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#if PLATFORM(MAC)
#include <CoreGraphics/CGDisplayConfiguration.h>
#include <OpenGL/CGLTypes.h>
#endif
namespace WebCore {
const unsigned MaxContexts = 16;
class GraphicsContext3D;
class HostWindow;
using PlatformDisplayID = uint32_t;
#if HAVE(APPLE_GRAPHICS_CONTROL)
WEBCORE_EXPORT bool hasLowAndHighPowerGPUs();
#endif
class GraphicsContext3DManager {
friend NeverDestroyed<GraphicsContext3DManager>;
public:
static GraphicsContext3DManager& sharedManager();
void addContext(GraphicsContext3D*, HostWindow*);
void removeContext(GraphicsContext3D*);
HostWindow* hostWindowForContext(GraphicsContext3D*) const;
void addContextRequiringHighPerformance(GraphicsContext3D*);
void removeContextRequiringHighPerformance(GraphicsContext3D*);
void recycleContextIfNecessary();
bool hasTooManyContexts() const { return m_contexts.size() >= MaxContexts; }
void updateAllContexts();
#if PLATFORM(MAC)
void screenDidChange(PlatformDisplayID, const HostWindow*);
WEBCORE_EXPORT static void displayWasReconfigured(CGDirectDisplayID, CGDisplayChangeSummaryFlags, void*);
#endif
private:
GraphicsContext3DManager()
: m_disableHighPerformanceGPUTimer(*this, &GraphicsContext3DManager::disableHighPerformanceGPUTimerFired)
{
}
void updateHighPerformanceState();
void disableHighPerformanceGPUTimerFired();
Vector<GraphicsContext3D*> m_contexts;
HashMap<GraphicsContext3D*, HostWindow*> m_contextWindowMap;
HashSet<GraphicsContext3D*> m_contextsRequiringHighPerformance;
Timer m_disableHighPerformanceGPUTimer;
bool m_requestingHighPerformance { false };
};
}