1 | /* |
---|---|
2 | * Copyright 2017 Google Inc. |
3 | * |
4 | * Use of this source code is governed by a BSD-style license that can be |
5 | * found in the LICENSE file. |
6 | */ |
7 | |
8 | #ifndef SkPromiseImageTexture_DEFINED |
9 | #define SkPromiseImageTexture_DEFINED |
10 | |
11 | #include "include/core/SkRefCnt.h" |
12 | #include "include/gpu/GrBackendSurface.h" |
13 | #include "include/private/GrResourceKey.h" |
14 | |
15 | #if SK_SUPPORT_GPU |
16 | /** |
17 | * This type is used to fulfill textures for PromiseImages. Once an instance is returned from a |
18 | * PromiseImageTextureFulfillProc it must remain valid until the corresponding |
19 | * PromiseImageTextureReleaseProc is called. For performance reasons it is recommended that the |
20 | * the client reuse a single PromiseImageTexture every time a given texture is returned by |
21 | * the PromiseImageTextureFulfillProc rather than recreating PromiseImageTextures representing |
22 | * the same underlying backend API texture. |
23 | */ |
24 | class SK_API SkPromiseImageTexture : public SkNVRefCnt<SkPromiseImageTexture> { |
25 | public: |
26 | SkPromiseImageTexture() = delete; |
27 | SkPromiseImageTexture(const SkPromiseImageTexture&) = delete; |
28 | SkPromiseImageTexture(SkPromiseImageTexture&&) = delete; |
29 | ~SkPromiseImageTexture(); |
30 | SkPromiseImageTexture& operator=(const SkPromiseImageTexture&) = delete; |
31 | SkPromiseImageTexture& operator=(SkPromiseImageTexture&&) = delete; |
32 | |
33 | static sk_sp<SkPromiseImageTexture> Make(const GrBackendTexture& backendTexture) { |
34 | if (!backendTexture.isValid()) { |
35 | return nullptr; |
36 | } |
37 | return sk_sp<SkPromiseImageTexture>(new SkPromiseImageTexture(backendTexture)); |
38 | } |
39 | |
40 | const GrBackendTexture& backendTexture() const { return fBackendTexture; } |
41 | |
42 | void addKeyToInvalidate(uint32_t contextID, const GrUniqueKey& key); |
43 | uint32_t uniqueID() const { return fUniqueID; } |
44 | |
45 | #if GR_TEST_UTILS |
46 | SkTArray<GrUniqueKey> testingOnly_uniqueKeysToInvalidate() const; |
47 | #endif |
48 | |
49 | private: |
50 | explicit SkPromiseImageTexture(const GrBackendTexture& backendTexture); |
51 | |
52 | SkSTArray<1, GrUniqueKeyInvalidatedMessage> fMessages; |
53 | GrBackendTexture fBackendTexture; |
54 | uint32_t fUniqueID = SK_InvalidUniqueID; |
55 | static std::atomic<uint32_t> gUniqueID; |
56 | }; |
57 | #endif |
58 | |
59 | #endif |
60 |