Support GL_SAMPLES queries in null contexts

tools/gpu/gl/debug/GrFBBindableObj.h

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrFBBindableObj_DEFINED
 #define GrFBBindableObj_DEFINED
 
 #include "SkTDArray.h"
 #include "GrFakeRefObj.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 // A common base class for render buffers and textures
 class GrFBBindableObj : public GrFakeRefObj {
 
 public:
     GrFBBindableObj()
-        : GrFakeRefObj() {
+        : GrFakeRefObj()
+        , fNumSamples(1) {
     }
 
     virtual ~GrFBBindableObj() {
         GrAlwaysAssert(0 == fColorReferees.count());
         GrAlwaysAssert(0 == fDepthReferees.count());
         GrAlwaysAssert(0 == fStencilReferees.count());
     }
 
     void setColorBound(GrFakeRefObj *referee) {
         fColorReferees.append(1, &referee);
@@ skipping 36 matching lines @@
         fStencilReferees.removeShuffle(index);
     }
     bool getStencilBound(GrFakeRefObj *referee) const {
         int index = fStencilReferees.find(referee);
         return 0 <= index;
     }
     bool getStencilBound() const {
         return 0 != fStencilReferees.count();
     }
 
+    int numSamples() { return fNumSamples; }
 
 protected:
+    int fNumSamples;
+
 private:
     SkTDArray<GrFakeRefObj *> fColorReferees;   // frame buffers that use this as a color buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
     SkTDArray<GrFakeRefObj *> fDepthReferees;   // frame buffers that use this as a depth buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
     SkTDArray<GrFakeRefObj *> fStencilReferees; // frame buffers that use this as a stencil buffer (via "glFramebufferRenderbuffer" or "glFramebufferTexture2D")
 
     typedef GrFakeRefObj INHERITED;
 };
 
 #endif // GrFBBindableObj_DEFINED