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63 lines
2.4 KiB
63 lines
2.4 KiB
4 months ago
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/*
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* Copyright 2017 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 SkPromiseImageTexture_DEFINED
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#define SkPromiseImageTexture_DEFINED
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#include "include/core/SkRefCnt.h"
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#include "include/gpu/GrBackendSurface.h"
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#include "include/private/GrResourceKey.h"
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#if SK_SUPPORT_GPU
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/**
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* This type is used to fulfill textures for PromiseImages. Once an instance is returned from a
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* PromiseImageTextureFulfillProc the GrBackendTexture it wraps must remain valid until the
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* corresponding PromiseImageTextureReleaseProc is called. For performance reasons it is
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* recommended that the client reuse a single PromiseImageTexture each time a given texture
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* is returned by the PromiseImageTextureFulfillProc rather than creating a new PromiseImageTexture
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* representing the same underlying backend API texture. If the underlying texture is deleted (after
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* PromiseImageTextureReleaseProc has been called if this was returned by a
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* PromiseImageTextureFulfillProc) then this object should be disposed as the texture it represented
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* cannot be used to fulfill again.
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*/
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class SK_API SkPromiseImageTexture : public SkNVRefCnt<SkPromiseImageTexture> {
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public:
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SkPromiseImageTexture() = delete;
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SkPromiseImageTexture(const SkPromiseImageTexture&) = delete;
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SkPromiseImageTexture(SkPromiseImageTexture&&) = delete;
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~SkPromiseImageTexture();
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SkPromiseImageTexture& operator=(const SkPromiseImageTexture&) = delete;
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SkPromiseImageTexture& operator=(SkPromiseImageTexture&&) = delete;
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static sk_sp<SkPromiseImageTexture> Make(const GrBackendTexture& backendTexture) {
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if (!backendTexture.isValid()) {
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return nullptr;
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}
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return sk_sp<SkPromiseImageTexture>(new SkPromiseImageTexture(backendTexture));
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}
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GrBackendTexture backendTexture() const { return fBackendTexture; }
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void addKeyToInvalidate(uint32_t contextID, const GrUniqueKey& key);
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uint32_t uniqueID() const { return fUniqueID; }
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#if GR_TEST_UTILS
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SkTArray<GrUniqueKey> testingOnly_uniqueKeysToInvalidate() const;
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#endif
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private:
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explicit SkPromiseImageTexture(const GrBackendTexture& backendTexture);
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SkSTArray<1, GrUniqueKeyInvalidatedMessage> fMessages;
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GrBackendTexture fBackendTexture;
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uint32_t fUniqueID = SK_InvalidUniqueID;
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static std::atomic<uint32_t> gUniqueID;
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};
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#endif
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#endif
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