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/*
* Copyright (C) 2012, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CCPrioritizedTextureManager_h
#define CCPrioritizedTextureManager_h
#include "CCPrioritizedTexture.h"
#include "CCPriorityCalculator.h"
#include "CCTexture.h"
#include "GraphicsContext3D.h"
#include "IntRect.h"
#include "IntSize.h"
namespace WebCore {
class CCPrioritizedTexture;
class CCPriorityCalculator;
class CCPrioritizedTextureManager {
WTF_MAKE_NONCOPYABLE(CCPrioritizedTextureManager);
public:
static PassOwnPtr<CCPrioritizedTextureManager> create(size_t maxMemoryLimitBytes, int maxTextureSize, int pool)
{
return adoptPtr(new CCPrioritizedTextureManager(maxMemoryLimitBytes, maxTextureSize, pool));
}
PassOwnPtr<CCPrioritizedTexture> createTexture(IntSize size, GC3Denum format)
{
return adoptPtr(new CCPrioritizedTexture(this, size, format));
}
~CCPrioritizedTextureManager();
// FIXME (http://crbug.com/137094): This 64MB default is a straggler from the
// old texture manager and is just to give us a default memory allocation before
// we get a callback from the GPU memory manager. We should probaby either:
// - wait for the callback before rendering anything instead
// - push this into the GPU memory manager somehow.
static size_t defaultMemoryAllocationLimit() { return 64 * 1024 * 1024; }
// memoryUseBytes() describes the number of bytes used by existing allocated textures.
// memoryAboveCutoffBytes() describes the number of bytes that would be used if all
// textures that are above the cutoff were allocated.
// memoryUseBytes() <= memoryAboveCutoffBytes() should always be true.
size_t memoryUseBytes() const { return m_memoryUseBytes; }
size_t memoryAboveCutoffBytes() const { return m_memoryAboveCutoffBytes; }
size_t memoryForSelfManagedTextures() const { return m_maxMemoryLimitBytes - m_memoryAvailableBytes; }
void setMaxMemoryLimitBytes(size_t bytes) { m_maxMemoryLimitBytes = bytes; }
size_t maxMemoryLimitBytes() const { return m_maxMemoryLimitBytes; }
void prioritizeTextures();
void clearPriorities();
bool requestLate(CCPrioritizedTexture*);
void reduceMemory(CCResourceProvider*);
void clearAllMemory(CCResourceProvider*);
void allBackingTexturesWereDeleted();
void acquireBackingTextureIfNeeded(CCPrioritizedTexture*, CCResourceProvider*);
void registerTexture(CCPrioritizedTexture*);
void unregisterTexture(CCPrioritizedTexture*);
void returnBackingTexture(CCPrioritizedTexture*);
#if !ASSERT_DISABLED
void assertInvariants();
#endif
private:
// Compare textures. Highest priority first.
static inline bool compareTextures(CCPrioritizedTexture* a, CCPrioritizedTexture* b)
{
if (a->requestPriority() == b->requestPriority())
return a < b;
return CCPriorityCalculator::priorityIsHigher(a->requestPriority(), b->requestPriority());
}
// Compare backings. Lowest priority first.
static inline bool compareBackings(CCPrioritizedTexture::Backing* a, CCPrioritizedTexture::Backing* b)
{
int priorityA = a->owner() ? a->owner()->requestPriority() : CCPriorityCalculator::lowestPriority();
int priorityB = b->owner() ? b->owner()->requestPriority() : CCPriorityCalculator::lowestPriority();
if (priorityA == priorityB)
return a < b;
return CCPriorityCalculator::priorityIsLower(priorityA, priorityB);
}
CCPrioritizedTextureManager(size_t maxMemoryLimitBytes, int maxTextureSize, int pool);
void reduceMemory(size_t limit, CCResourceProvider*);
CCPrioritizedTexture::Backing* createBacking(IntSize, GC3Denum format, CCResourceProvider*);
void destroyBacking(CCPrioritizedTexture::Backing*, CCResourceProvider*);
size_t m_maxMemoryLimitBytes;
unsigned m_priorityCutoff;
size_t m_memoryUseBytes;
size_t m_memoryAboveCutoffBytes;
size_t m_memoryAvailableBytes;
int m_pool;
typedef HashSet<CCPrioritizedTexture*> TextureSet;
typedef ListHashSet<CCPrioritizedTexture::Backing*> BackingSet;
typedef Vector<CCPrioritizedTexture*> TextureVector;
typedef Vector<CCPrioritizedTexture::Backing*> BackingVector;
TextureSet m_textures;
BackingSet m_backings;
TextureVector m_tempTextureVector;
BackingVector m_tempBackingVector;
};
} // WebCore
#endif
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