bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2015 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 GrGpuResourcePriv_DEFINED |
| 10 | #define GrGpuResourcePriv_DEFINED |
| 11 | |
| 12 | #include "GrGpuResource.h" |
| 13 | |
| 14 | /** |
| 15 | * This class allows code internal to Skia privileged access to manage the cache keys and budget |
| 16 | * status of a GrGpuResource object. |
| 17 | */ |
| 18 | class GrGpuResource::ResourcePriv { |
| 19 | public: |
| 20 | /** |
bsalomon | 8718aaf | 2015-02-19 07:24:21 -0800 | [diff] [blame] | 21 | * Sets a unique key for the resource. If the resource was previously cached as scratch it will |
bsalomon | f99e961 | 2015-02-19 08:24:16 -0800 | [diff] [blame] | 22 | * be converted to a uniquely-keyed resource. If the key is invalid then this is equivalent to |
| 23 | * removeUniqueKey(). If another resource is using the key then its unique key is removed and |
| 24 | * this resource takes over the key. |
bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 25 | */ |
bsalomon | f99e961 | 2015-02-19 08:24:16 -0800 | [diff] [blame] | 26 | void setUniqueKey(const GrUniqueKey& key) { fResource->setUniqueKey(key); } |
bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 27 | |
bsalomon | f99e961 | 2015-02-19 08:24:16 -0800 | [diff] [blame] | 28 | /** Removes the unique key from a resource. If the resource has a scratch key, it may be |
| 29 | preserved for recycling as scratch. */ |
| 30 | void removeUniqueKey() { fResource->removeUniqueKey(); } |
bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 31 | |
| 32 | /** |
| 33 | * If the resource is uncached make it cached. Has no effect on resources that are wrapped or |
| 34 | * already cached. |
| 35 | */ |
| 36 | void makeBudgeted() { fResource->makeBudgeted(); } |
| 37 | |
| 38 | /** |
| 39 | * If the resource is cached make it uncached. Has no effect on resources that are wrapped or |
bsalomon | 8718aaf | 2015-02-19 07:24:21 -0800 | [diff] [blame] | 40 | * already uncached. Furthermore, resources with unique keys cannot be made unbudgeted. |
bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 41 | */ |
| 42 | void makeUnbudgeted() { fResource->makeUnbudgeted(); } |
| 43 | |
| 44 | /** |
| 45 | * Does the resource count against the resource budget? |
| 46 | */ |
| 47 | bool isBudgeted() const { |
| 48 | bool ret = GrGpuResource::kCached_LifeCycle == fResource->fLifeCycle; |
bsalomon | 8718aaf | 2015-02-19 07:24:21 -0800 | [diff] [blame] | 49 | SkASSERT(ret || !fResource->getUniqueKey().isValid()); |
bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 50 | return ret; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * If this resource can be used as a scratch resource this returns a valid scratch key. |
| 55 | * Otherwise it returns a key for which isNullScratch is true. The resource may currently be |
bsalomon | 8718aaf | 2015-02-19 07:24:21 -0800 | [diff] [blame] | 56 | * used as a uniquely keyed resource rather than scratch. Check isScratch(). |
bsalomon | 3582d3e | 2015-02-13 14:20:05 -0800 | [diff] [blame] | 57 | */ |
| 58 | const GrScratchKey& getScratchKey() const { return fResource->fScratchKey; } |
| 59 | |
| 60 | /** |
| 61 | * If the resource has a scratch key, the key will be removed. Since scratch keys are installed |
| 62 | * at resource creation time, this means the resource will never again be used as scratch. |
| 63 | */ |
| 64 | void removeScratchKey() const { fResource->removeScratchKey(); } |
| 65 | |
| 66 | protected: |
| 67 | ResourcePriv(GrGpuResource* resource) : fResource(resource) { } |
| 68 | ResourcePriv(const ResourcePriv& that) : fResource(that.fResource) {} |
| 69 | ResourcePriv& operator=(const CacheAccess&); // unimpl |
| 70 | |
| 71 | // No taking addresses of this type. |
| 72 | const ResourcePriv* operator&() const; |
| 73 | ResourcePriv* operator&(); |
| 74 | |
| 75 | GrGpuResource* fResource; |
| 76 | |
| 77 | friend class GrGpuResource; // to construct/copy this type. |
| 78 | }; |
| 79 | |
| 80 | inline GrGpuResource::ResourcePriv GrGpuResource::resourcePriv() { return ResourcePriv(this); } |
| 81 | |
| 82 | inline const GrGpuResource::ResourcePriv GrGpuResource::resourcePriv() const { |
| 83 | return ResourcePriv(const_cast<GrGpuResource*>(this)); |
| 84 | } |
| 85 | |
| 86 | #endif |