f6f7b67ac2
original: https://skia-review.googlesource.com/106966 Bug: skia: Change-Id: I779985cef2d3c4f36a0129d8ecedd12e510bec7e Reviewed-on: https://skia-review.googlesource.com/107781 Reviewed-by: Robert Phillips <robertphillips@google.com> Commit-Queue: Greg Daniel <egdaniel@google.com>
125 lines
4.6 KiB
C++
125 lines
4.6 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrTextureProxy_DEFINED
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#define GrTextureProxy_DEFINED
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#include "GrSamplerState.h"
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#include "GrSurfaceProxy.h"
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class GrCaps;
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class GrDeferredProxyUploader;
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class GrProxyProvider;
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class GrResourceProvider;
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class GrTextureOpList;
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class GrTextureProxyPriv;
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// This class delays the acquisition of textures until they are actually required
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class GrTextureProxy : virtual public GrSurfaceProxy {
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public:
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GrTextureProxy* asTextureProxy() override { return this; }
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const GrTextureProxy* asTextureProxy() const override { return this; }
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// Actually instantiate the backing texture, if necessary
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bool instantiate(GrResourceProvider*) override;
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GrSamplerState::Filter highestFilterMode() const;
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// If we are instantiated and have a target, return the mip state of that target. Otherwise
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// returns the proxy's mip state from creation time. This is useful for lazy proxies which may
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// claim to not need mips at creation time, but the instantiation happens to give us a mipped
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// target. In that case we should use that for our benefit to avoid possible copies/mip
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// generation later.
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GrMipMapped mipMapped() const;
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/**
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* Return the texture proxy's unique key. It will be invalid if the proxy doesn't have one.
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*/
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const GrUniqueKey& getUniqueKey() const {
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#ifdef SK_DEBUG
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if (fTarget && fUniqueKey.isValid()) {
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SkASSERT(fTarget->getUniqueKey().isValid());
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// It is possible for a non-keyed proxy to have a uniquely keyed resource assigned to
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// it. This just means that a future user of the resource will be filling it with unique
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// data. However, if the proxy has a unique key its attached resource should also
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// have that key.
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SkASSERT(fUniqueKey == fTarget->getUniqueKey());
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}
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#endif
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return fUniqueKey;
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}
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/**
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* Internal-only helper class used for manipulations of the resource by the cache.
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*/
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class CacheAccess;
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inline CacheAccess cacheAccess();
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inline const CacheAccess cacheAccess() const;
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// Provides access to special purpose functions.
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GrTextureProxyPriv texPriv();
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const GrTextureProxyPriv texPriv() const;
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protected:
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// DDL TODO: rm the GrSurfaceProxy friending
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friend class GrSurfaceProxy; // for ctors
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friend class GrProxyProvider; // for ctors
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friend class GrTextureProxyPriv;
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// Deferred version
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GrTextureProxy(const GrSurfaceDesc& srcDesc, GrMipMapped, SkBackingFit, SkBudgeted,
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const void* srcData, size_t srcRowBytes, uint32_t flags);
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// Lazy-callback version
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// There are two main use cases for lazily-instantiated proxies:
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// basic knowledge - width, height, config, origin are known
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// minimal knowledge - only config is known.
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//
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// The basic knowledge version is used for DDL where we know the type of proxy we are going to
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// use, but we don't have access to the GPU yet to instantiate it.
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//
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// The minimal knowledge version is used for CCPR where we are generating an atlas but we do not
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// know the final size until flush time.
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GrTextureProxy(LazyInstantiateCallback&&, LazyInstantiationType, const GrSurfaceDesc& desc,
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GrMipMapped, SkBackingFit fit, SkBudgeted budgeted, uint32_t flags);
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// Wrapped version
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GrTextureProxy(sk_sp<GrSurface>, GrSurfaceOrigin);
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~GrTextureProxy() override;
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sk_sp<GrSurface> createSurface(GrResourceProvider*) const override;
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private:
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GrMipMapped fMipMapped;
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GrUniqueKey fUniqueKey;
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GrProxyProvider* fProxyProvider; // only set when fUniqueKey is valid
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// Only used for proxies whose contents are being prepared on a worker thread. This object
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// stores the texture data, allowing the proxy to remain uninstantiated until flush. At that
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// point, the proxy is instantiated, and this data is used to perform an ASAP upload.
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std::unique_ptr<GrDeferredProxyUploader> fDeferredUploader;
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size_t onUninstantiatedGpuMemorySize() const override;
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// Methods made available via GrTextureProxy::CacheAccess
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void setUniqueKey(GrProxyProvider*, const GrUniqueKey&);
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void clearUniqueKey();
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SkDEBUGCODE(void validateLazySurface(const GrSurface*) override;)
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// For wrapped proxies the GrTexture pointer is stored in GrIORefProxy.
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// For deferred proxies that pointer will be filled in when we need to instantiate
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// the deferred resource
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typedef GrSurfaceProxy INHERITED;
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};
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#endif
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