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Unified Diff: cc/prioritized_texture.h

Issue 11122003: [cc] Rename all cc/ filenames to Chromium style (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years, 2 months ago
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Index: cc/prioritized_texture.h
diff --git a/cc/prioritized_texture.h b/cc/prioritized_texture.h
index 638cbb270ce9b24689d5095baf174ade4f4d1a13..3196867064abce966502f6cf012896d3e9770025 100644
--- a/cc/prioritized_texture.h
+++ b/cc/prioritized_texture.h
@@ -1,3 +1,142 @@
// 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 CCPrioritizedTexture_h
+#define CCPrioritizedTexture_h
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "CCPriorityCalculator.h"
+#include "CCResourceProvider.h"
+#include "CCTexture.h"
+#include "GraphicsContext3D.h"
+#include "IntRect.h"
+#include "IntSize.h"
+
+namespace cc {
+
+class CCPrioritizedTextureManager;
+
+class CCPrioritizedTexture {
+public:
+ static scoped_ptr<CCPrioritizedTexture> create(CCPrioritizedTextureManager* manager, IntSize size, GC3Denum format)
+ {
+ return make_scoped_ptr(new CCPrioritizedTexture(manager, size, format));
+ }
+ static scoped_ptr<CCPrioritizedTexture> create(CCPrioritizedTextureManager* manager)
+ {
+ return make_scoped_ptr(new CCPrioritizedTexture(manager, IntSize(), 0));
+ }
+ ~CCPrioritizedTexture();
+
+ // Texture properties. Changing these causes the backing texture to be lost.
+ // Setting these to the same value is a no-op.
+ void setTextureManager(CCPrioritizedTextureManager*);
+ CCPrioritizedTextureManager* textureManager() { return m_manager; }
+ void setDimensions(IntSize, GC3Denum format);
+ GC3Denum format() const { return m_format; }
+ IntSize size() const { return m_size; }
+ size_t bytes() const { return m_bytes; }
+
+ // Set priority for the requested texture.
+ void setRequestPriority(int priority) { m_priority = priority; }
+ int requestPriority() const { return m_priority; }
+
+ // After CCPrioritizedTexture::prioritizeTextures() is called, this returns
+ // if the the request succeeded and this texture can be acquired for use.
+ bool canAcquireBackingTexture() const { return m_isAbovePriorityCutoff; }
+
+ // This returns whether we still have a backing texture. This can continue
+ // to be true even after canAcquireBackingTexture() becomes false. In this
+ // case the texture can be used but shouldn't be updated since it will get
+ // taken away "soon".
+ bool haveBackingTexture() const { return !!backing(); }
+
+ bool backingResourceWasEvicted() const;
+
+ // If canAcquireBackingTexture() is true acquireBackingTexture() will acquire
+ // a backing texture for use. Call this whenever the texture is actually needed.
+ void acquireBackingTexture(CCResourceProvider*);
+
+ // FIXME: Request late is really a hack for when we are totally out of memory
+ // (all textures are visible) but we can still squeeze into the limit
+ // by not painting occluded textures. In this case the manager
+ // refuses all visible textures and requestLate() will enable
+ // canAcquireBackingTexture() on a call-order basis. We might want to
+ // just remove this in the future (carefully) and just make sure we don't
+ // regress OOMs situations.
+ bool requestLate();
+
+ // Uploads pixels into the backing resource. This functions will aquire the backing if needed.
+ void upload(CCResourceProvider*, const uint8_t* image, const IntRect& imageRect, const IntRect& sourceRect, const IntSize& destOffset);
+
+ CCResourceProvider::ResourceId resourceId() const;
+
+ // Self-managed textures are accounted for when prioritizing other textures,
+ // but they are not allocated/recycled/deleted, so this needs to be done
+ // externally. canAcquireBackingTexture() indicates if the texture would have
+ // been allowed given its priority.
+ void setIsSelfManaged(bool isSelfManaged) { m_isSelfManaged = isSelfManaged; }
+ bool isSelfManaged() { return m_isSelfManaged; }
+ void setToSelfManagedMemoryPlaceholder(size_t bytes);
+
+private:
+ friend class CCPrioritizedTextureManager;
+ friend class CCPrioritizedTextureTest;
+
+ class Backing : public CCTexture {
+ public:
+ Backing(unsigned id, CCResourceProvider*, IntSize, GC3Denum format);
+ ~Backing();
+ void updatePriority();
+
+ CCPrioritizedTexture* owner() { return m_owner; }
+ bool hadOwnerAtLastPriorityUpdate() const { return m_ownerExistedAtLastPriorityUpdate; }
+ int requestPriorityAtLastPriorityUpdate() const { return m_priorityAtLastPriorityUpdate; }
+ bool wasAbovePriorityCutoffAtLastPriorityUpdate() const { return m_wasAbovePriorityCutoffAtLastPriorityUpdate; }
+
+ void deleteResource(CCResourceProvider*);
+ bool resourceHasBeenDeleted() const;
+
+ private:
+ friend class CCPrioritizedTexture;
+ CCPrioritizedTexture* m_owner;
+ int m_priorityAtLastPriorityUpdate;
+ bool m_ownerExistedAtLastPriorityUpdate;
+ bool m_wasAbovePriorityCutoffAtLastPriorityUpdate;
+ bool m_resourceHasBeenDeleted;
+#ifndef NDEBUG
+ CCResourceProvider* m_resourceProvider;
+#endif
+
+ DISALLOW_COPY_AND_ASSIGN(Backing);
+ };
+
+ CCPrioritizedTexture(CCPrioritizedTextureManager*, IntSize, GC3Denum format);
+
+ bool isAbovePriorityCutoff() { return m_isAbovePriorityCutoff; }
+ void setAbovePriorityCutoff(bool isAbovePriorityCutoff) { m_isAbovePriorityCutoff = isAbovePriorityCutoff; }
+ void setManagerInternal(CCPrioritizedTextureManager* manager) { m_manager = manager; }
+
+ Backing* backing() const { return m_backing; }
+ void link(Backing*);
+ void unlink();
+
+ IntSize m_size;
+ GC3Denum m_format;
+ size_t m_bytes;
+
+ int m_priority;
+ bool m_isAbovePriorityCutoff;
+ bool m_isSelfManaged;
+
+ Backing* m_backing;
+ CCPrioritizedTextureManager* m_manager;
+
+ DISALLOW_COPY_AND_ASSIGN(CCPrioritizedTexture);
+};
+
+} // namespace cc
+
+#endif
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