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      1 /*
      2  * Copyright 2014 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 GrTexturePriv_DEFINED
      9 #define GrTexturePriv_DEFINED
     10 
     11 #include "GrTexture.h"
     12 
     13 /** Class that adds methods to GrTexture that are only intended for use internal to Skia.
     14     This class is purely a privileged window into GrTexture. It should never have additional data
     15     members or virtual methods.
     16     Non-static methods that are not trivial inlines should be spring-boarded (e.g. declared and
     17     implemented privately in GrTexture with a inline public method here). */
     18 class GrTexturePriv {
     19 public:
     20     void markMipMapsDirty() {
     21         fTexture->markMipMapsDirty();
     22     }
     23 
     24     void markMipMapsClean() {
     25         fTexture->markMipMapsClean();
     26     }
     27 
     28     bool mipMapsAreDirty() const {
     29         return GrMipMapsStatus::kValid != fTexture->fMipMapsStatus;
     30     }
     31 
     32     GrMipMapped mipMapped() const {
     33         if (GrMipMapsStatus::kNotAllocated != fTexture->fMipMapsStatus) {
     34             return GrMipMapped::kYes;
     35         }
     36         return GrMipMapped::kNo;
     37     }
     38 
     39     void setMaxMipMapLevel(int maxMipMapLevel) const {
     40         fTexture->fMaxMipMapLevel = maxMipMapLevel;
     41     }
     42 
     43     int maxMipMapLevel() const {
     44         return fTexture->fMaxMipMapLevel;
     45     }
     46 
     47     GrSLType samplerType() const { return fTexture->fSamplerType; }
     48 
     49     /** The filter used is clamped to this value in GrProcessor::TextureSampler. */
     50     GrSamplerState::Filter highestFilterMode() const { return fTexture->fHighestFilterMode; }
     51 
     52     void setMipColorMode(SkDestinationSurfaceColorMode colorMode) const {
     53         fTexture->fMipColorMode = colorMode;
     54     }
     55     SkDestinationSurfaceColorMode mipColorMode() const { return fTexture->fMipColorMode; }
     56 
     57     static void ComputeScratchKey(const GrSurfaceDesc&, GrScratchKey*);
     58     static void ComputeScratchKey(GrPixelConfig config, int width, int height,
     59                                   bool isRenderTarget, int sampleCnt,
     60                                   GrMipMapped, GrScratchKey* key);
     61 
     62 
     63 private:
     64     GrTexturePriv(GrTexture* texture) : fTexture(texture) { }
     65     GrTexturePriv(const GrTexturePriv& that) : fTexture(that.fTexture) { }
     66     GrTexturePriv& operator=(const GrTexturePriv&); // unimpl
     67 
     68     // No taking addresses of this type.
     69     const GrTexturePriv* operator&() const;
     70     GrTexturePriv* operator&();
     71 
     72     GrTexture* fTexture;
     73 
     74     friend class GrTexture; // to construct/copy this type.
     75 };
     76 
     77 inline GrTexturePriv GrTexture::texturePriv() { return GrTexturePriv(this); }
     78 
     79 inline const GrTexturePriv GrTexture::texturePriv () const {
     80     return GrTexturePriv(const_cast<GrTexture*>(this));
     81 }
     82 
     83 #endif
     84