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      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:
     20     GrFBBindableObj()
     21         : GrFakeRefObj() {
     22     }
     23 
     24     virtual ~GrFBBindableObj() {
     25         GrAlwaysAssert(0 == fColorReferees.count());
     26         GrAlwaysAssert(0 == fDepthReferees.count());
     27         GrAlwaysAssert(0 == fStencilReferees.count());
     28     }
     29 
     30     void setColorBound(GrFakeRefObj *referee) {
     31         fColorReferees.append(1, &referee);
     32     }
     33     void resetColorBound(GrFakeRefObj *referee) {
     34         int index = fColorReferees.find(referee);
     35         GrAlwaysAssert(0 <= index);
     36         fColorReferees.removeShuffle(index);
     37     }
     38     bool getColorBound(GrFakeRefObj *referee) const {
     39         int index = fColorReferees.find(referee);
     40         return 0 <= index;
     41     }
     42     bool getColorBound() const {
     43         return 0 != fColorReferees.count();
     44     }
     45 
     46     void setDepthBound(GrFakeRefObj *referee) {
     47         fDepthReferees.append(1, &referee);
     48     }
     49     void resetDepthBound(GrFakeRefObj *referee) {
     50         int index = fDepthReferees.find(referee);
     51         GrAlwaysAssert(0 <= index);
     52         fDepthReferees.removeShuffle(index);
     53     }
     54     bool getDepthBound(GrFakeRefObj *referee) const {
     55         int index = fDepthReferees.find(referee);
     56         return 0 <= index;
     57     }
     58     bool getDepthBound() const {
     59         return 0 != fDepthReferees.count();
     60     }
     61 
     62     void setStencilBound(GrFakeRefObj *referee) {
     63         fStencilReferees.append(1, &referee);
     64     }
     65     void resetStencilBound(GrFakeRefObj *referee) {
     66         int index = fStencilReferees.find(referee);
     67         GrAlwaysAssert(0 <= index);
     68         fStencilReferees.removeShuffle(index);
     69     }
     70     bool getStencilBound(GrFakeRefObj *referee) const {
     71         int index = fStencilReferees.find(referee);
     72         return 0 <= index;
     73     }
     74     bool getStencilBound() const {
     75         return 0 != fStencilReferees.count();
     76     }
     77 
     78 
     79 protected:
     80 private:
     81     SkTDArray<GrFakeRefObj *> fColorReferees;   // frame buffers that use this as a color buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
     82     SkTDArray<GrFakeRefObj *> fDepthReferees;   // frame buffers that use this as a depth buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
     83     SkTDArray<GrFakeRefObj *> fStencilReferees; // frame buffers that use this as a stencil buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
     84 
     85     typedef GrFakeRefObj INHERITED;
     86 };
     87 
     88 #endif // GrFBBindableObj_DEFINED
     89