| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrTextureProxy_DEFINED |
| #define GrTextureProxy_DEFINED |
| |
| #include "src/gpu/GrSamplerState.h" |
| #include "src/gpu/GrSurfaceProxy.h" |
| |
| class GrCaps; |
| class GrDeferredProxyUploader; |
| class GrProxyProvider; |
| class GrResourceProvider; |
| class GrTextureProxyPriv; |
| |
| // This class delays the acquisition of textures until they are actually required |
| class GrTextureProxy : virtual public GrSurfaceProxy { |
| public: |
| GrTextureProxy* asTextureProxy() override { return this; } |
| const GrTextureProxy* asTextureProxy() const override { return this; } |
| |
| // Actually instantiate the backing texture, if necessary |
| bool instantiate(GrResourceProvider*) override; |
| |
| GrSamplerState::Filter highestFilterMode() const; |
| |
| // If we are instantiated and have a target, return the mip state of that target. Otherwise |
| // returns the proxy's mip state from creation time. This is useful for lazy proxies which may |
| // claim to not need mips at creation time, but the instantiation happens to give us a mipped |
| // target. In that case we should use that for our benefit to avoid possible copies/mip |
| // generation later. |
| GrMipMapped mipMapped() const; |
| |
| bool mipMapsAreDirty() const { |
| SkASSERT((GrMipMapped::kNo == fMipMapped) == |
| (GrMipMapsStatus::kNotAllocated == fMipMapsStatus)); |
| return GrMipMapped::kYes == fMipMapped && GrMipMapsStatus::kValid != fMipMapsStatus; |
| } |
| void markMipMapsDirty() { |
| SkASSERT(GrMipMapped::kYes == fMipMapped); |
| fMipMapsStatus = GrMipMapsStatus::kDirty; |
| } |
| void markMipMapsClean() { |
| SkASSERT(GrMipMapped::kYes == fMipMapped); |
| fMipMapsStatus = GrMipMapsStatus::kValid; |
| } |
| |
| // Returns the GrMipMapped value of the proxy from creation time regardless of whether it has |
| // been instantiated or not. |
| GrMipMapped proxyMipMapped() const { return fMipMapped; } |
| |
| GrTextureType textureType() const { return this->backendFormat().textureType(); } |
| |
| /** If true then the texture does not support MIP maps and only supports clamp wrap mode. */ |
| bool hasRestrictedSampling() const { |
| return GrTextureTypeHasRestrictedSampling(this->textureType()); |
| } |
| |
| // Returns true if the passed in proxies can be used as dynamic state together when flushing |
| // draws to the gpu. This accepts GrSurfaceProxy since the information needed is defined on |
| // that type, but this function exists in GrTextureProxy because it's only relevant when the |
| // proxies are being used as textures. |
| static bool ProxiesAreCompatibleAsDynamicState(const GrSurfaceProxy* first, |
| const GrSurfaceProxy* second); |
| |
| /** |
| * Return the texture proxy's unique key. It will be invalid if the proxy doesn't have one. |
| */ |
| const GrUniqueKey& getUniqueKey() const { |
| #ifdef SK_DEBUG |
| if (this->isInstantiated() && fUniqueKey.isValid() && fSyncTargetKey) { |
| GrSurface* surface = this->peekSurface(); |
| SkASSERT(surface); |
| |
| SkASSERT(surface->getUniqueKey().isValid()); |
| // It is possible for a non-keyed proxy to have a uniquely keyed resource assigned to |
| // it. This just means that a future user of the resource will be filling it with unique |
| // data. However, if the proxy has a unique key its attached resource should also |
| // have that key. |
| SkASSERT(fUniqueKey == surface->getUniqueKey()); |
| } |
| #endif |
| |
| return fUniqueKey; |
| } |
| |
| /** |
| * Internal-only helper class used for manipulations of the resource by the cache. |
| */ |
| class CacheAccess; |
| inline CacheAccess cacheAccess(); |
| inline const CacheAccess cacheAccess() const; |
| |
| // Provides access to special purpose functions. |
| GrTextureProxyPriv texPriv(); |
| const GrTextureProxyPriv texPriv() const; |
| |
| protected: |
| // DDL TODO: rm the GrSurfaceProxy friending |
| friend class GrSurfaceProxy; // for ctors |
| friend class GrProxyProvider; // for ctors |
| friend class GrTextureProxyPriv; |
| friend class GrSurfaceProxyPriv; // ability to change key sync state after lazy instantiation. |
| |
| // Deferred version - no data. |
| GrTextureProxy(const GrBackendFormat&, |
| const GrSurfaceDesc&, |
| GrSurfaceOrigin, |
| GrMipMapped, |
| GrMipMapsStatus, |
| const GrSwizzle& textureSwizzle, |
| SkBackingFit, |
| SkBudgeted, |
| GrProtected, |
| GrInternalSurfaceFlags, |
| UseAllocator); |
| |
| // Lazy-callback version |
| // There are two main use cases for lazily-instantiated proxies: |
| // basic knowledge - width, height, config, origin are known |
| // minimal knowledge - only config is known. |
| // |
| // The basic knowledge version is used for DDL where we know the type of proxy we are going to |
| // use, but we don't have access to the GPU yet to instantiate it. |
| // |
| // The minimal knowledge version is used for CCPR where we are generating an atlas but we do not |
| // know the final size until flush time. |
| GrTextureProxy(LazyInstantiateCallback&&, |
| const GrBackendFormat&, |
| const GrSurfaceDesc& desc, |
| GrSurfaceOrigin, |
| GrMipMapped, |
| GrMipMapsStatus, |
| const GrSwizzle& textureSwizzle, |
| SkBackingFit, |
| SkBudgeted, |
| GrProtected, |
| GrInternalSurfaceFlags, |
| UseAllocator); |
| |
| // Wrapped version |
| GrTextureProxy(sk_sp<GrSurface>, GrSurfaceOrigin, const GrSwizzle&, UseAllocator); |
| |
| ~GrTextureProxy() override; |
| |
| sk_sp<GrSurface> createSurface(GrResourceProvider*) const override; |
| |
| void setTargetKeySync(bool sync) { fSyncTargetKey = sync; } |
| |
| private: |
| // WARNING: Be careful when adding or removing fields here. ASAN is likely to trigger warnings |
| // when instantiating GrTextureRenderTargetProxy. The std::function in GrSurfaceProxy makes |
| // each class in the diamond require 16 byte alignment. Clang appears to layout the fields for |
| // each class to achieve the necessary alignment. However, ASAN checks the alignment of 'this' |
| // in the constructors, and always looks for the full 16 byte alignment, even if the fields in |
| // that particular class don't require it. Changing the size of this object can move the start |
| // address of other types, leading to this problem. |
| |
| GrMipMapped fMipMapped; |
| |
| // This tracks the mipmap status at the proxy level and is thus somewhat distinct from the |
| // backing GrTexture's mipmap status. In particular, this status is used to determine when |
| // mipmap levels need to be explicitly regenerated during the execution of a DAG of opsTasks. |
| GrMipMapsStatus fMipMapsStatus; |
| // TEMPORARY: We are in the process of moving GrMipMapsStatus from the texture to the proxy. |
| // We track the fInitialMipMapsStatus here so we can assert that the proxy did indeed expect |
| // the correct mipmap status immediately after instantiation. |
| // |
| // NOTE: fMipMapsStatus may no longer be equal to fInitialMipMapsStatus by the time the texture |
| // is instantiated, since it tracks mipmaps in the time frame in which the DAG is being built. |
| SkDEBUGCODE(const GrMipMapsStatus fInitialMipMapsStatus;) |
| |
| bool fSyncTargetKey = true; // Should target's unique key be sync'ed with ours. |
| |
| GrUniqueKey fUniqueKey; |
| GrProxyProvider* fProxyProvider; // only set when fUniqueKey is valid |
| |
| // Only used for proxies whose contents are being prepared on a worker thread. This object |
| // stores the texture data, allowing the proxy to remain uninstantiated until flush. At that |
| // point, the proxy is instantiated, and this data is used to perform an ASAP upload. |
| std::unique_ptr<GrDeferredProxyUploader> fDeferredUploader; |
| |
| size_t onUninstantiatedGpuMemorySize(const GrCaps&) const override; |
| |
| // Methods made available via GrTextureProxy::CacheAccess |
| void setUniqueKey(GrProxyProvider*, const GrUniqueKey&); |
| void clearUniqueKey(); |
| |
| SkDEBUGCODE(void onValidateSurface(const GrSurface*) override;) |
| |
| typedef GrSurfaceProxy INHERITED; |
| }; |
| |
| #endif |