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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WebGLTimerQueryEXT_h
#define WebGLTimerQueryEXT_h
#include "modules/webgl/WebGLContextObject.h"
#include "public/platform/WebThread.h"
namespace blink {
class WebGLTimerQueryEXT : public WebGLContextObject, public WebThread::TaskObserver {
DEFINE_WRAPPERTYPEINFO();
public:
static WebGLTimerQueryEXT* create(WebGLRenderingContextBase*);
~WebGLTimerQueryEXT() override;
void setTarget(GLenum target) { m_target = target; }
GLuint object() const { return m_queryId; }
bool hasTarget() const { return m_target != 0; }
GLenum target() const { return m_target; }
void resetCachedResult();
void updateCachedResult(WebGraphicsContext3D*);
bool isQueryResultAvailable();
GLuint64 getQueryResult();
protected:
WebGLTimerQueryEXT(WebGLRenderingContextBase*);
private:
bool hasObject() const override { return m_queryId != 0; }
void deleteObjectImpl(WebGraphicsContext3D*) override;
void registerTaskObserver();
void unregisterTaskObserver();
// TaskObserver implementation.
void didProcessTask() override;
void willProcessTask() override { }
GLenum m_target;
GLuint m_queryId;
bool m_taskObserverRegistered;
bool m_canUpdateAvailability;
bool m_queryResultAvailable;
GLuint64 m_queryResult;
};
} // namespace blink
#endif // WebGLTimerQueryEXT_h
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