Fix unref order in SkGpuDevice

src/gpu/SkGpuDevice.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGpuDevice_DEFINED
 #define SkGpuDevice_DEFINED
 
 #include "SkGr.h"
 #include "SkBitmap.h"
 #include "SkDevice.h"
 #include "SkPicture.h"
 #include "SkRegion.h"
 #include "SkSurface.h"
+#include "GrDrawContext.h"
 #include "GrContext.h"
 #include "GrSurfacePriv.h"
 
 class GrAccelData;
 class GrTextureProducer;
 struct GrCachedLayer;
 
 /**
  *  Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the
  *  canvas.
@@ skipping 18 matching lines @@
                                const SkSurfaceProps*, InitContents);
 
     /**
      * New device that will create an offscreen renderTarget based on the ImageInfo and
      * sampleCount. The Budgeted param controls whether the device's backing store counts against
      * the resource cache budget. On failure, returns nullptr.
      */
     static SkGpuDevice* Create(GrContext*, SkSurface::Budgeted, const SkImageInfo&,
                                int sampleCount, const SkSurfaceProps*, InitContents);
 
-    virtual ~SkGpuDevice();
+    ~SkGpuDevice() override {}
 
     SkGpuDevice* cloneDevice(const SkSurfaceProps& props) {
         SkBaseDevice* dev = this->onCreateDevice(CreateInfo(this->imageInfo(), kPossible_TileUsage,
                                                             props.pixelGeometry()),
                                                  nullptr);
         return static_cast<SkGpuDevice*>(dev);
     }
 
     GrContext* context() const { return fContext; }
 
@@ skipping 79 matching lines @@
 protected:
     bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) override;
     bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) override;
     bool onShouldDisableLCD(const SkPaint&) const final;
 
     /**  PRIVATE / EXPERIMENTAL -- do not call */
     virtual bool EXPERIMENTAL_drawPicture(SkCanvas* canvas, const SkPicture* picture,
                                           const SkMatrix*, const SkPaint*) override;
 
 private:
-    GrContext*                      fContext;
+    // We want these unreffed in DrawContext, RenderTarget, GrContext order.
+    SkAutoTUnref<GrContext>         fContext;
+    SkAutoTUnref<GrRenderTarget>    fRenderTarget;
+    SkAutoTUnref<GrDrawContext>     fDrawContext;
+
     SkAutoTUnref<const SkClipStack> fClipStack;
     SkIPoint                        fClipOrigin;
-    GrClip                          fClip;
-    SkAutoTUnref<GrDrawContext>     fDrawContext;
-    GrRenderTarget*                 fRenderTarget;
+    GrClip                          fClip;;
     // remove when our clients don't rely on accessBitmap()
     SkBitmap                        fLegacyBitmap;
     bool                            fNeedClear;
     bool                            fOpaque;
 
     enum Flags {
         kNeedClear_Flag = 1 << 0,  //!< Surface requires an initial clear
         kIsOpaque_Flag  = 1 << 1,  //!< Hint from client that rendering to this device will be
                                    //   opaque even if the config supports alpha.
     };
@@ skipping 82 matching lines @@
 
     static GrRenderTarget* CreateRenderTarget(GrContext*, SkSurface::Budgeted, const SkImageInfo&,
                                               int sampleCount);
 
     friend class GrAtlasTextContext;
     friend class SkSurface_Gpu;      // for access to surfaceProps
     typedef SkBaseDevice INHERITED;
 };
 
 #endif