| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright 2014 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 GrProgramElementRef_DEFINED | |
| 9 #define GrProgramElementRef_DEFINED | |
| 10 | |
| 11 #include "SkRefCnt.h" | |
| 12 #include "GrTypes.h" | |
| 13 | |
| 14 /** | |
| 15 * Helper for owning a GrProgramElement subclass and being able to convert a ref
to pending | |
| 16 * execution. It is like an SkAutoTUnref for program elements whose execution ca
n be deferred. Once | |
| 17 * in the pending execution state it is illegal to change the object that is own
ed by the | |
| 18 * GrProgramElementRef. Its destructor will either unref the GrProgramElement or
signal that | |
| 19 * the pending execution has completed, depending on whether convertToPendingExe
c() was called. | |
| 20 */ | |
| 21 template <typename T> class GrProgramElementRef : SkNoncopyable { | |
| 22 public: | |
| 23 GrProgramElementRef() : fOwnPendingExec(false), fObj(NULL) {}; | |
| 24 | |
| 25 // Adopts a ref from the caller. | |
| 26 explicit GrProgramElementRef(T* obj) : fOwnPendingExec(false), fObj(obj) {} | |
| 27 | |
| 28 // Adopts a ref from the caller. Do not call after convertToPendingExec. | |
| 29 void reset(T* obj) { | |
| 30 SkASSERT(!fOwnPendingExec); | |
| 31 SkSafeUnref(fObj); | |
| 32 fObj = obj; | |
| 33 } | |
| 34 | |
| 35 void convertToPendingExec() { | |
| 36 SkASSERT(!fOwnPendingExec); | |
| 37 fObj->convertRefToPendingExecution(); | |
| 38 fOwnPendingExec = true; | |
| 39 } | |
| 40 | |
| 41 // In the short term we need to support copying a GrProcessorStage and makin
g the copy own | |
| 42 // the same type of ref as the source. This function exists to support this.
TODO: Once | |
| 43 // GrDrawState and GrOptDrawState no longer share a base class they won't ha
ve to share | |
| 44 // GrProcessorStage and we can have GrOptDrawState always own pending execut
ions rather than | |
| 45 // refs on GrProgramElements. At that point we should be able to delete this
function. | |
| 46 // This function makes assumptions that are valid in the GrProcessorStage us
e case and should | |
| 47 // not be used elsewhere. | |
| 48 void initAndRef(const GrProgramElementRef& that) { | |
| 49 SkASSERT(!fObj); | |
| 50 SkASSERT(that.fObj); | |
| 51 if (that.fOwnPendingExec) { | |
| 52 SkASSERT(that.fObj->fPendingExecutions > 0); | |
| 53 that.fObj->fPendingExecutions++; | |
| 54 } else { | |
| 55 that.fObj->ref(); | |
| 56 } | |
| 57 this->fOwnPendingExec = that.fOwnPendingExec; | |
| 58 this->fObj = that.fObj; | |
| 59 } | |
| 60 | |
| 61 T* get() const { return fObj; } | |
| 62 operator T*() { return fObj; } | |
| 63 | |
| 64 /** If T is const, the type returned from operator-> will also be const. */ | |
| 65 typedef typename SkTConstType<typename SkAutoTUnref<T>::template BlockRef<T>
, | |
| 66 SkTIsConst<T>::value>::type BlockRefType; | |
| 67 | |
| 68 /** | |
| 69 * GrProgramElementRef assumes ownership of the ref and manages converting t
he ref to a | |
| 70 * pending execution. As a result, it is an error for the user to ref or unr
ef through | |
| 71 * GrProgramElementRef. Therefore operator-> returns BlockRef<T>*. | |
| 72 */ | |
| 73 BlockRefType *operator->() const { | |
| 74 return static_cast<BlockRefType*>(fObj); | |
| 75 } | |
| 76 | |
| 77 ~GrProgramElementRef() { | |
| 78 if (fObj) { | |
| 79 if (fOwnPendingExec) { | |
| 80 fObj->completedExecution(); | |
| 81 } else { | |
| 82 fObj->unref(); | |
| 83 } | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 private: | |
| 88 bool fOwnPendingExec; | |
| 89 T* fObj; | |
| 90 | |
| 91 typedef SkNoncopyable INHERITED; | |
| 92 }; | |
| 93 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 739673002:
Create GrOptDrawState before recording draw in GrInOrderDrawBuffer (Closed)
Base URL: https://skia.googlesource.com/skia.git@master