1 /*
2  * Copyright 2016 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef GrSurfaceProxy_DEFINED
9 #define GrSurfaceProxy_DEFINED
10 
11 #include "GrGpuResource.h"
12 #include "SkRect.h"
13 
14 class GrTextureProxy;
15 class GrRenderTargetProxy;
16 
17 class GrSurfaceProxy : public GrIORef<GrSurfaceProxy> {
18 public:
desc()19     const GrSurfaceDesc& desc() const { return fDesc; }
20 
origin()21     GrSurfaceOrigin origin() const {
22         SkASSERT(kTopLeft_GrSurfaceOrigin == fDesc.fOrigin ||
23                  kBottomLeft_GrSurfaceOrigin == fDesc.fOrigin);
24         return fDesc.fOrigin;
25     }
width()26     int width() const { return fDesc.fWidth; }
height()27     int height() const { return fDesc.fWidth; }
config()28     GrPixelConfig config() const { return fDesc.fConfig; }
29 
uniqueID()30     uint32_t uniqueID() const { return fUniqueID; }
31 
32     /**
33      * Helper that gets the width and height of the surface as a bounding rectangle.
34      */
getBoundsRect()35     SkRect getBoundsRect() const { return SkRect::MakeIWH(this->width(), this->height()); }
36 
37     /**
38      * @return the texture proxy associated with the surface proxy, may be NULL.
39      */
asTextureProxy()40     virtual GrTextureProxy* asTextureProxy() { return nullptr; }
asTextureProxy()41     virtual const GrTextureProxy* asTextureProxy() const { return nullptr; }
42 
43     /**
44      * @return the render target proxy associated with the surface proxy, may be NULL.
45      */
asRenderTargetProxy()46     virtual GrRenderTargetProxy* asRenderTargetProxy() { return nullptr; }
asRenderTargetProxy()47     virtual const GrRenderTargetProxy* asRenderTargetProxy() const { return nullptr; }
48 
49     /**
50      * Does the resource count against the resource budget?
51      */
isBudgeted()52     SkBudgeted isBudgeted() const { return fBudgeted; }
53 
54 protected:
55     // Deferred version
GrSurfaceProxy(const GrSurfaceDesc & desc,SkBackingFit fit,SkBudgeted budgeted)56     GrSurfaceProxy(const GrSurfaceDesc& desc, SkBackingFit fit, SkBudgeted budgeted)
57         : fDesc(desc)
58         , fFit(fit)
59         , fBudgeted(budgeted)
60         , fUniqueID(GrGpuResource::CreateUniqueID()) {
61     }
62 
63     // Wrapped version
GrSurfaceProxy(const GrSurfaceDesc & desc,SkBackingFit fit,SkBudgeted budgeted,uint32_t uniqueID)64     GrSurfaceProxy(const GrSurfaceDesc& desc, SkBackingFit fit,
65                    SkBudgeted budgeted, uint32_t uniqueID)
66         : fDesc(desc)
67         , fFit(fit)
68         , fBudgeted(budgeted)
69         , fUniqueID(uniqueID) {
70     }
71 
~GrSurfaceProxy()72     virtual ~GrSurfaceProxy() {}
73 
74     // For wrapped resources, 'fDesc' will always be filled in from the wrapped resource.
75     const GrSurfaceDesc fDesc;
76     const SkBackingFit  fFit;      // always exact for wrapped resources
77     const SkBudgeted    fBudgeted; // set from the backing resource for wrapped resources
78     const uint32_t      fUniqueID; // set from the backing resource for wrapped resources
79 
80 private:
81 
82     // See comment in GrGpuResource.h.
notifyAllCntsAreZero(CntType)83     void notifyAllCntsAreZero(CntType) const { delete this; }
notifyRefCountIsZero()84     bool notifyRefCountIsZero() const { return true; }
85 
86     typedef GrIORef<GrSurfaceProxy> INHERITED;
87 
88     // to access notifyAllCntsAreZero and notifyRefCntIsZero.
89     friend class GrIORef<GrSurfaceProxy>;
90 };
91 
92 #endif
93