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// Copyright 2012 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 ThrottledTextureUploader_h
#define ThrottledTextureUploader_h
#include "TextureUploader.h"
#include <deque>
#include <wtf/Deque.h>
namespace WebKit {
class WebGraphicsContext3D;
}
namespace cc {
class ThrottledTextureUploader : public TextureUploader {
WTF_MAKE_NONCOPYABLE(ThrottledTextureUploader);
public:
static PassOwnPtr<ThrottledTextureUploader> create(WebKit::WebGraphicsContext3D* context)
{
return adoptPtr(new ThrottledTextureUploader(context));
}
static PassOwnPtr<ThrottledTextureUploader> create(WebKit::WebGraphicsContext3D* context, size_t pendingUploadLimit)
{
return adoptPtr(new ThrottledTextureUploader(context, pendingUploadLimit));
}
virtual ~ThrottledTextureUploader();
virtual bool isBusy() OVERRIDE;
virtual double estimatedTexturesPerSecond() OVERRIDE;
virtual void beginUploads() OVERRIDE;
virtual void endUploads() OVERRIDE;
virtual void uploadTexture(CCResourceProvider*, Parameters) OVERRIDE;
private:
class Query {
public:
static PassOwnPtr<Query> create(WebKit::WebGraphicsContext3D* context) { return adoptPtr(new Query(context)); }
virtual ~Query();
void begin();
void end(double texturesUploaded);
bool isPending();
void wait();
unsigned value();
double texturesUploaded();
private:
explicit Query(WebKit::WebGraphicsContext3D*);
WebKit::WebGraphicsContext3D* m_context;
unsigned m_queryId;
unsigned m_value;
bool m_hasValue;
double m_texturesUploaded;
};
ThrottledTextureUploader(WebKit::WebGraphicsContext3D*);
ThrottledTextureUploader(WebKit::WebGraphicsContext3D*, size_t pendingUploadLimit);
void processQueries();
WebKit::WebGraphicsContext3D* m_context;
size_t m_maxPendingQueries;
Deque<OwnPtr<Query> > m_pendingQueries;
Deque<OwnPtr<Query> > m_availableQueries;
std::deque<double> m_texturesPerSecondHistory;
double m_texturesUploaded;
};
}
#endif
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