Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / skqp / 49f085dddff10473b6ebf832a974288300224e60 / . / src / gpu / GrProgramResource.cpp
blob: 482caff7ee0b3257c04f827029abb2bcf40414a3 [file] [log] [blame]
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]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
11GrProgramResource::GrProgramResource() {
12 fResource = NULL;
13 fOwnRef = false;
14 fPendingIO = false;
15 fIOType = kNone_IOType;
16}
17
18GrProgramResource::GrProgramResource(GrGpuResource* resource, IOType ioType) {
19 fResource = NULL;
20 fOwnRef = false;
21 fPendingIO = false;
22 this->setResource(resource, ioType);
23}
24
25GrProgramResource::~GrProgramResource() {
26 if (fOwnRef) {
bsalomon49f085d2014-09-05 13:34:00 -0700[diff] [blame^]27 SkASSERT(fResource);
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]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
49void GrProgramResource::reset() {
50 SkASSERT(!fPendingIO);
bsalomon49f085d2014-09-05 13:34:00 -0700[diff] [blame^]51 SkASSERT(SkToBool(fResource) == fOwnRef);
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]52 if (fOwnRef) {
53 fResource->unref();
54 fOwnRef = false;
55 fResource = NULL;
56 fIOType = kNone_IOType;
57 }
58}
59
60void GrProgramResource::setResource(GrGpuResource* resource, IOType ioType) {
61 SkASSERT(!fPendingIO);
bsalomon49f085d2014-09-05 13:34:00 -0700[diff] [blame^]62 SkASSERT(SkToBool(fResource) == fOwnRef);
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]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
76void GrProgramResource::markPendingIO() const {
bsalomonac8d6192014-09-04 14:13:44 -0700[diff] [blame]77 // This should only be called when the owning GrProgramElement gets its first
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]78 // pendingExecution ref.
79 SkASSERT(!fPendingIO);
bsalomon49f085d2014-09-05 13:34:00 -0700[diff] [blame^]80 SkASSERT(fResource);
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]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
bsalomonac8d6192014-09-04 14:13:44 -0700[diff] [blame]100void GrProgramResource::pendingIOComplete() const {
101 // This should only be called when the owner's pending executions have ocurred but it is still
102 // reffed.
103 SkASSERT(fOwnRef);
104 SkASSERT(fPendingIO);
105 switch (fIOType) {
106 case kNone_IOType:
107 SkFAIL("GrProgramResource with neither reads nor writes?");
108 break;
109 case kRead_IOType:
110 fResource->completedRead();
111 break;
112 case kWrite_IOType:
113 fResource->completedWrite();
114 break;
115 case kRW_IOType:
116 fResource->completedRead();
117 fResource->completedWrite();
118 break;
119
120 }
121 fPendingIO = false;
122}
123
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]124void GrProgramResource::removeRef() const {
125 // This should only be called once, when the owners last ref goes away and
126 // there is a pending execution.
127 SkASSERT(fOwnRef);
128 SkASSERT(fPendingIO);
129 SkASSERT(kNone_IOType != fIOType);
bsalomon49f085d2014-09-05 13:34:00 -0700[diff] [blame^]130 SkASSERT(fResource);
bsalomon95740982014-09-04 13:12:37 -0700[diff] [blame]131 fResource->unref();
132 fOwnRef = false;
133}