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| 1 /* | |
| 2 * Copyright 2012 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 GrFakeRefObj_DEFINED | |
| 9 #define GrFakeRefObj_DEFINED | |
| 10 | |
| 11 #include "SkTypes.h" | |
| 12 #include "gl/GrGLInterface.h" | |
| 13 | |
| 14 //////////////////////////////////////////////////////////////////////////////// | |
| 15 // This object is used to track the OpenGL objects. We don't use real | |
| 16 // reference counting (i.e., we don't free the objects when their ref count | |
| 17 // goes to 0) so that we can detect invalid memory accesses. The refs we | |
| 18 // are tracking in this class are actually OpenGL's references to the objects | |
| 19 // not "ours" | |
| 20 // Each object also gets a unique globally identifying ID | |
| 21 class GrFakeRefObj : SkNoncopyable { | |
| 22 public: | |
| 23 GrFakeRefObj() | |
| 24 : fRef(0) | |
| 25 , fMarkedForDeletion(false) | |
| 26 , fDeleted(false) { | |
| 27 | |
| 28 // source for globally unique IDs - 0 is reserved! | |
| 29 static int fNextID = 0; | |
| 30 | |
| 31 fID = ++fNextID; | |
| 32 } | |
| 33 virtual ~GrFakeRefObj() {}; | |
| 34 | |
| 35 void ref() { | |
| 36 fRef++; | |
| 37 } | |
| 38 void unref() { | |
| 39 fRef--; | |
| 40 GrAlwaysAssert(fRef >= 0); | |
| 41 | |
| 42 // often in OpenGL a given object may still be in use when the | |
| 43 // delete call is made. In these cases the object is marked | |
| 44 // for deletion and then freed when it is no longer in use | |
| 45 if (0 == fRef && fMarkedForDeletion) { | |
| 46 this->deleteAction(); | |
| 47 } | |
| 48 } | |
| 49 int getRefCount() const { return fRef; } | |
| 50 | |
| 51 GrGLuint getID() const { return fID; } | |
| 52 | |
| 53 void setMarkedForDeletion() { fMarkedForDeletion = true; } | |
| 54 bool getMarkedForDeletion() const { return fMarkedForDeletion; } | |
| 55 | |
| 56 bool getDeleted() const { return fDeleted; } | |
| 57 | |
| 58 // The deleteAction fires if the object has been marked for deletion but | |
| 59 // couldn't be deleted earlier due to refs | |
| 60 virtual void deleteAction() { | |
| 61 this->setDeleted(); | |
| 62 } | |
| 63 | |
| 64 protected: | |
| 65 private: | |
| 66 int fRef; // ref count | |
| 67 GrGLuint fID; // globally unique ID | |
| 68 bool fMarkedForDeletion; | |
| 69 // The deleted flag is only set when OpenGL thinks the object is deleted | |
| 70 // It is obviously still allocated w/in this framework | |
| 71 bool fDeleted; | |
| 72 | |
| 73 // setDeleted should only ever appear in the deleteAction method! | |
| 74 void setDeleted() { fDeleted = true; } | |
| 75 }; | |
| 76 | |
| 77 //////////////////////////////////////////////////////////////////////////////// | |
| 78 // Each class derived from GrFakeRefObj should use this macro to add a | |
| 79 // factory creation entry point. This entry point is used by the GrGLDebug | |
| 80 // object to instantiate the various objects | |
| 81 // all globally unique IDs | |
| 82 #define GR_DEFINE_CREATOR(className) \ | |
| 83 public: \ | |
| 84 static GrFakeRefObj *create##className() { return new className; } | |
| 85 | |
| 86 #endif // GrFakeRefObj_DEFINED | |
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Chromium Code Reviews
Issue 1815823002:
Move SkGLContext and some GrGLInterface implementations to skgputest module (Closed)
Base URL: https://chromium.googlesource.com/skia.git@debugobject