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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         , fNumSamples(1) {
     23     }
     24 
     25     virtual ~GrFBBindableObj() {
     26         GrAlwaysAssert(0 == fColorReferees.count());
     27         GrAlwaysAssert(0 == fDepthReferees.count());
     28         GrAlwaysAssert(0 == fStencilReferees.count());
     29     }
     30 
     31     void setColorBound(GrFakeRefObj *referee) {
     32         fColorReferees.append(1, &referee);
     33     }
     34     void resetColorBound(GrFakeRefObj *referee) {
     35         int index = fColorReferees.find(referee);
     36         GrAlwaysAssert(0 <= index);
     37         fColorReferees.removeShuffle(index);
     38     }
     39     bool getColorBound(GrFakeRefObj *referee) const {
     40         int index = fColorReferees.find(referee);
     41         return 0 <= index;
     42     }
     43     bool getColorBound() const {
     44         return 0 != fColorReferees.count();
     45     }
     46 
     47     void setDepthBound(GrFakeRefObj *referee) {
     48         fDepthReferees.append(1, &referee);
     49     }
     50     void resetDepthBound(GrFakeRefObj *referee) {
     51         int index = fDepthReferees.find(referee);
     52         GrAlwaysAssert(0 <= index);
     53         fDepthReferees.removeShuffle(index);
     54     }
     55     bool getDepthBound(GrFakeRefObj *referee) const {
     56         int index = fDepthReferees.find(referee);
     57         return 0 <= index;
     58     }
     59     bool getDepthBound() const {
     60         return 0 != fDepthReferees.count();
     61     }
     62 
     63     void setStencilBound(GrFakeRefObj *referee) {
     64         fStencilReferees.append(1, &referee);
     65     }
     66     void resetStencilBound(GrFakeRefObj *referee) {
     67         int index = fStencilReferees.find(referee);
     68         GrAlwaysAssert(0 <= index);
     69         fStencilReferees.removeShuffle(index);
     70     }
     71     bool getStencilBound(GrFakeRefObj *referee) const {
     72         int index = fStencilReferees.find(referee);
     73         return 0 <= index;
     74     }
     75     bool getStencilBound() const {
     76         return 0 != fStencilReferees.count();
     77     }
     78 
     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