Part 8 of cc/ directory shuffles: resources

cc/prioritized_resource.cc

-// 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.
-
-#include "cc/prioritized_resource.h"
-
-#include <algorithm>
-
-#include "cc/platform_color.h"
-#include "cc/prioritized_resource_manager.h"
-#include "cc/priority_calculator.h"
-#include "cc/trees/proxy.h"
-
-namespace cc {
-
-PrioritizedResource::PrioritizedResource(PrioritizedResourceManager* manager, gfx::Size size, GLenum format)
-    : m_size(size)
-    , m_format(format)
-    , m_bytes(0)
-    , m_contentsSwizzled(false)
-    , m_priority(PriorityCalculator::LowestPriority())
-    , m_isAbovePriorityCutoff(false)
-    , m_isSelfManaged(false)
-    , m_backing(0)
-    , m_manager(0)
-{
-    // m_manager is set in registerTexture() so validity can be checked.
-    DCHECK(format || size.IsEmpty());
-    if (format)
-        m_bytes = Resource::MemorySizeBytes(size, format);
-    if (manager)
-        manager->registerTexture(this);
-}
-
-PrioritizedResource::~PrioritizedResource()
-{
-    if (m_manager)
-        m_manager->unregisterTexture(this);
-}
-
-void PrioritizedResource::setTextureManager(PrioritizedResourceManager* manager)
-{
-    if (m_manager == manager)
-        return;
-    if (m_manager)
-        m_manager->unregisterTexture(this);
-    if (manager)
-        manager->registerTexture(this);
-}
-
-void PrioritizedResource::setDimensions(gfx::Size size, GLenum format)
-{
-    if (m_format != format || m_size != size) {
-        m_isAbovePriorityCutoff = false;
-        m_format = format;
-        m_size = size;
-        m_bytes = Resource::MemorySizeBytes(size, format);
-        DCHECK(m_manager || !m_backing);
-        if (m_manager)
-            m_manager->returnBackingTexture(this);
-    }
-}
-
-bool PrioritizedResource::requestLate()
-{
-    if (!m_manager)
-        return false;
-    return m_manager->requestLate(this);
-}
-
-bool PrioritizedResource::backingResourceWasEvicted() const
-{
-    return m_backing ? m_backing->resourceHasBeenDeleted() : false;
-}
-
-void PrioritizedResource::acquireBackingTexture(ResourceProvider* resourceProvider)
-{
-    DCHECK(m_isAbovePriorityCutoff);
-    if (m_isAbovePriorityCutoff)
-        m_manager->acquireBackingTextureIfNeeded(this, resourceProvider);
-}
-
-ResourceProvider::ResourceId PrioritizedResource::resourceId() const
-{
-    if (m_backing)
-        return m_backing->id();
-    return 0;
-}
-
-void PrioritizedResource::setPixels(ResourceProvider* resourceProvider,
-                                   const uint8_t* image, const gfx::Rect& imageRect,
-                                   const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset)
-{
-    DCHECK(m_isAbovePriorityCutoff);
-    if (m_isAbovePriorityCutoff)
-        acquireBackingTexture(resourceProvider);
-    DCHECK(m_backing);
-    resourceProvider->SetPixels(resourceId(), image, imageRect, sourceRect, destOffset);
-
-    // The component order may be bgra if we uploaded bgra pixels to rgba
-    // texture. Mark contents as swizzled if image component order is
-    // different than texture format.
-    m_contentsSwizzled = !PlatformColor::SameComponentOrder(m_format);
-}
-
-void PrioritizedResource::link(Backing* backing)
-{
-    DCHECK(backing);
-    DCHECK(!backing->m_owner);
-    DCHECK(!m_backing);
-
-    m_backing = backing;
-    m_backing->m_owner = this;
-}
-
-void PrioritizedResource::unlink()
-{
-    DCHECK(m_backing);
-    DCHECK(m_backing->m_owner == this);
-
-    m_backing->m_owner = 0;
-    m_backing = 0;
-}
-
-void PrioritizedResource::setToSelfManagedMemoryPlaceholder(size_t bytes)
-{
-    setDimensions(gfx::Size(), GL_RGBA);
-    setIsSelfManaged(true);
-    m_bytes = bytes;
-}
-
-PrioritizedResource::Backing::Backing(unsigned id, ResourceProvider* resourceProvider, gfx::Size size, GLenum format)
-    : Resource(id, size, format)
-    , m_owner(0)
-    , m_priorityAtLastPriorityUpdate(PriorityCalculator::LowestPriority())
-    , m_wasAbovePriorityCutoffAtLastPriorityUpdate(false)
-    , m_inDrawingImplTree(false)
-    , m_resourceHasBeenDeleted(false)
-#ifndef NDEBUG
-    , m_resourceProvider(resourceProvider)
-#endif
-{
-}
-
-PrioritizedResource::Backing::~Backing()
-{
-    DCHECK(!m_owner);
-    DCHECK(m_resourceHasBeenDeleted);
-}
-
-void PrioritizedResource::Backing::deleteResource(ResourceProvider* resourceProvider)
-{
-    DCHECK(!proxy() || proxy()->IsImplThread());
-    DCHECK(!m_resourceHasBeenDeleted);
-#ifndef NDEBUG
-    DCHECK(resourceProvider == m_resourceProvider);
-#endif
-
-    resourceProvider->DeleteResource(id());
-    set_id(0);
-    m_resourceHasBeenDeleted = true;
-}
-
-bool PrioritizedResource::Backing::resourceHasBeenDeleted() const
-{
-    DCHECK(!proxy() || proxy()->IsImplThread());
-    return m_resourceHasBeenDeleted;
-}
-
-bool PrioritizedResource::Backing::canBeRecycled() const
-{
-    DCHECK(!proxy() || proxy()->IsImplThread());
-    return !m_wasAbovePriorityCutoffAtLastPriorityUpdate && !m_inDrawingImplTree;
-}
-
-void PrioritizedResource::Backing::updatePriority()
-{
-    DCHECK(!proxy() || proxy()->IsImplThread() && proxy()->IsMainThreadBlocked());
-    if (m_owner) {
-        m_priorityAtLastPriorityUpdate = m_owner->requestPriority();
-        m_wasAbovePriorityCutoffAtLastPriorityUpdate = m_owner->isAbovePriorityCutoff();
-    } else {
-        m_priorityAtLastPriorityUpdate = PriorityCalculator::LowestPriority();
-        m_wasAbovePriorityCutoffAtLastPriorityUpdate = false;
-    }
-}
-
-void PrioritizedResource::Backing::updateInDrawingImplTree()
-{
-    DCHECK(!proxy() || proxy()->IsImplThread() && proxy()->IsMainThreadBlocked());
-    m_inDrawingImplTree = !!owner();
-    if (!m_inDrawingImplTree)
-        DCHECK_EQ(m_priorityAtLastPriorityUpdate, PriorityCalculator::LowestPriority());
-}
-
-void PrioritizedResource::returnBackingTexture()
-{
-    DCHECK(m_manager || !m_backing);
-    if (m_manager)
-        m_manager->returnBackingTexture(this);
-}
-
-const Proxy* PrioritizedResource::Backing::proxy() const
-{
-    if (!m_owner || !m_owner->resourceManager())
-        return 0;
-    return m_owner->resourceManager()->proxyForDebug();
-}
-
-}  // namespace cc