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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_TIMER_QUERY_EXT_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_TIMER_QUERY_EXT_H_
#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/renderer/modules/webgl/webgl_object.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cancellable_task.h"
namespace blink {
class WebGLTimerQueryEXT : public WebGLObject {
DEFINE_WRAPPERTYPEINFO();
public:
WebGLTimerQueryEXT(WebGLContextObjectSupport*);
~WebGLTimerQueryEXT() override;
void SetTarget(GLenum target) { target_ = target; }
bool HasTarget() const { return target_ != 0; }
GLenum Target() const { return target_; }
void ResetCachedResult();
void UpdateCachedResult(gpu::gles2::GLES2Interface*);
bool IsQueryResultAvailable();
GLuint64 GetQueryResult();
private:
void DeleteObjectImpl(gpu::gles2::GLES2Interface*) override;
void ScheduleAllowAvailabilityUpdate();
void AllowAvailabilityUpdate();
GLenum target_;
bool can_update_availability_;
bool query_result_available_;
GLuint64 query_result_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
TaskHandle task_handle_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_WEBGL_TIMER_QUERY_EXT_H_
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