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| 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 #include "GrProgramResource.h" |
| 9 #include "GrGpuResource.h" |
| 10 |
| 11 GrProgramResource::GrProgramResource() { |
| 12 fResource = NULL; |
| 13 fOwnRef = false; |
| 14 fPendingIO = false; |
| 15 fIOType = kNone_IOType; |
| 16 } |
| 17 |
| 18 GrProgramResource::GrProgramResource(GrGpuResource* resource, IOType ioType) { |
| 19 fResource = NULL; |
| 20 fOwnRef = false; |
| 21 fPendingIO = false; |
| 22 this->setResource(resource, ioType); |
| 23 } |
| 24 |
| 25 GrProgramResource::~GrProgramResource() { |
| 26 if (fOwnRef) { |
| 27 SkASSERT(NULL != fResource); |
| 28 fResource->unref(); |
| 29 } |
| 30 if (fPendingIO) { |
| 31 switch (fIOType) { |
| 32 case kNone_IOType: |
| 33 SkFAIL("Shouldn't get here if fIOType is kNone."); |
| 34 break; |
| 35 case kRead_IOType: |
| 36 fResource->completedRead(); |
| 37 break; |
| 38 case kWrite_IOType: |
| 39 fResource->completedWrite(); |
| 40 break; |
| 41 case kRW_IOType: |
| 42 fResource->completedRead(); |
| 43 fResource->completedWrite(); |
| 44 break; |
| 45 } |
| 46 } |
| 47 } |
| 48 |
| 49 void GrProgramResource::reset() { |
| 50 SkASSERT(!fPendingIO); |
| 51 SkASSERT((NULL != fResource) == fOwnRef); |
| 52 if (fOwnRef) { |
| 53 fResource->unref(); |
| 54 fOwnRef = false; |
| 55 fResource = NULL; |
| 56 fIOType = kNone_IOType; |
| 57 } |
| 58 } |
| 59 |
| 60 void GrProgramResource::setResource(GrGpuResource* resource, IOType ioType) { |
| 61 SkASSERT(!fPendingIO); |
| 62 SkASSERT((NULL != fResource) == fOwnRef); |
| 63 SkSafeUnref(fResource); |
| 64 if (NULL == resource) { |
| 65 fResource = NULL; |
| 66 fOwnRef = false; |
| 67 fIOType = kNone_IOType; |
| 68 } else { |
| 69 SkASSERT(kNone_IOType != ioType); |
| 70 fResource = resource; |
| 71 fOwnRef = true; |
| 72 fIOType = ioType; |
| 73 } |
| 74 } |
| 75 |
| 76 void GrProgramResource::markPendingIO() const { |
| 77 // This should only be called once, when the owning GrProgramElement gets it
s first |
| 78 // pendingExecution ref. |
| 79 SkASSERT(!fPendingIO); |
| 80 SkASSERT(NULL != fResource); |
| 81 fPendingIO = true; |
| 82 switch (fIOType) { |
| 83 case kNone_IOType: |
| 84 SkFAIL("GrProgramResource with neither reads nor writes?"); |
| 85 break; |
| 86 case kRead_IOType: |
| 87 fResource->addPendingRead(); |
| 88 break; |
| 89 case kWrite_IOType: |
| 90 fResource->addPendingWrite(); |
| 91 break; |
| 92 case kRW_IOType: |
| 93 fResource->addPendingRead(); |
| 94 fResource->addPendingWrite(); |
| 95 break; |
| 96 |
| 97 } |
| 98 } |
| 99 |
| 100 void GrProgramResource::removeRef() const { |
| 101 // This should only be called once, when the owners last ref goes away and |
| 102 // there is a pending execution. |
| 103 SkASSERT(fOwnRef); |
| 104 SkASSERT(fPendingIO); |
| 105 SkASSERT(kNone_IOType != fIOType); |
| 106 SkASSERT(NULL != fResource); |
| 107 fResource->unref(); |
| 108 fOwnRef = false; |
| 109 } |
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