1 
2 /*
3  * Copyright 2012 Google Inc.
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 
9 #ifndef GrFBBindableObj_DEFINED
10 #define GrFBBindableObj_DEFINED
11 
12 #include "SkTDArray.h"
13 #include "GrFakeRefObj.h"
14 
15 ////////////////////////////////////////////////////////////////////////////////
16 // A common base class for render buffers and textures
17 class GrFBBindableObj : public GrFakeRefObj {
18 
19 public:
GrFBBindableObj()20     GrFBBindableObj()
21         : GrFakeRefObj()
22         , fNumSamples(1) {
23     }
24 
~GrFBBindableObj()25     virtual ~GrFBBindableObj() {
26         GrAlwaysAssert(0 == fColorReferees.count());
27         GrAlwaysAssert(0 == fDepthReferees.count());
28         GrAlwaysAssert(0 == fStencilReferees.count());
29     }
30 
setColorBound(GrFakeRefObj * referee)31     void setColorBound(GrFakeRefObj *referee) {
32         fColorReferees.append(1, &referee);
33     }
resetColorBound(GrFakeRefObj * referee)34     void resetColorBound(GrFakeRefObj *referee) {
35         int index = fColorReferees.find(referee);
36         GrAlwaysAssert(0 <= index);
37         fColorReferees.removeShuffle(index);
38     }
getColorBound(GrFakeRefObj * referee)39     bool getColorBound(GrFakeRefObj *referee) const {
40         int index = fColorReferees.find(referee);
41         return 0 <= index;
42     }
getColorBound()43     bool getColorBound() const {
44         return 0 != fColorReferees.count();
45     }
46 
setDepthBound(GrFakeRefObj * referee)47     void setDepthBound(GrFakeRefObj *referee) {
48         fDepthReferees.append(1, &referee);
49     }
resetDepthBound(GrFakeRefObj * referee)50     void resetDepthBound(GrFakeRefObj *referee) {
51         int index = fDepthReferees.find(referee);
52         GrAlwaysAssert(0 <= index);
53         fDepthReferees.removeShuffle(index);
54     }
getDepthBound(GrFakeRefObj * referee)55     bool getDepthBound(GrFakeRefObj *referee) const {
56         int index = fDepthReferees.find(referee);
57         return 0 <= index;
58     }
getDepthBound()59     bool getDepthBound() const {
60         return 0 != fDepthReferees.count();
61     }
62 
setStencilBound(GrFakeRefObj * referee)63     void setStencilBound(GrFakeRefObj *referee) {
64         fStencilReferees.append(1, &referee);
65     }
resetStencilBound(GrFakeRefObj * referee)66     void resetStencilBound(GrFakeRefObj *referee) {
67         int index = fStencilReferees.find(referee);
68         GrAlwaysAssert(0 <= index);
69         fStencilReferees.removeShuffle(index);
70     }
getStencilBound(GrFakeRefObj * referee)71     bool getStencilBound(GrFakeRefObj *referee) const {
72         int index = fStencilReferees.find(referee);
73         return 0 <= index;
74     }
getStencilBound()75     bool getStencilBound() const {
76         return 0 != fStencilReferees.count();
77     }
78 
numSamples()79     int numSamples() { return fNumSamples; }
80 
81 protected:
82     int fNumSamples;
83 
84 private:
85     SkTDArray<GrFakeRefObj *> fColorReferees;   // frame buffers that use this as a color buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
86     SkTDArray<GrFakeRefObj *> fDepthReferees;   // frame buffers that use this as a depth buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
87     SkTDArray<GrFakeRefObj *> fStencilReferees; // frame buffers that use this as a stencil buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
88 
89     typedef GrFakeRefObj INHERITED;
90 };
91 
92 #endif // GrFBBindableObj_DEFINED
93