src/image/SkImage_Gpu.h

   1 /*
   2  * Copyright 2015 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 SkImage_Gpu_DEFINED
   9 #define SkImage_Gpu_DEFINED
  10
  11 #include "SkAtomics.h"
  12 #include "GrTexture.h"
  13 #include "GrGpuResourcePriv.h"
  14 #include "SkBitmap.h"
  15 #include "SkGr.h"
  16 #include "SkImage_Base.h"
  17 #include "SkImagePriv.h"
  18 #include "SkSurface.h"
  19
  20 class SkImage_Gpu : public SkImage_Base {
  21 public:
  22     /**
  23      *  An "image" can be a subset/window into a larger texture, so we explicit take the
  24      *  width and height.
  25      */
  26     SkImage_Gpu(int w, int h, uint32_t uniqueID, SkAlphaType, sk_sp<GrTexture>, sk_sp<SkColorSpace>,
  27                 SkBudgeted);
  28     ~SkImage_Gpu() override;
  29
  30     SkImageInfo onImageInfo() const override;
  31     SkAlphaType onAlphaType() const override { return fAlphaType; }
  32
  33     void applyBudgetDecision() const {
  34         if (SkBudgeted::kYes == fBudgeted) {
  35             fTexture->resourcePriv().makeBudgeted();
  36         } else {
  37             fTexture->resourcePriv().makeUnbudgeted();
  38         }
  39     }
  40
  41     bool getROPixels(SkBitmap*, SkColorSpace* dstColorSpace, CachingHint) const override;
  42     GrTexture* asTextureRef(GrContext* ctx, const GrSamplerParams& params, SkColorSpace*,
  43                             sk_sp<SkColorSpace>*) const override;
  44     sk_sp<SkImage> onMakeSubset(const SkIRect&) const override;
  45
  46     GrTexture* peekTexture() const override { return fTexture.get(); }
  47     sk_sp<GrTexture> refPinnedTexture(uint32_t* uniqueID) const override {
  48         *uniqueID = this->uniqueID();
  49         return fTexture;
  50     }
  51     bool onReadPixels(const SkImageInfo&, void* dstPixels, size_t dstRowBytes,
  52                       int srcX, int srcY, CachingHint) const override;
  53
  54 private:
  55     sk_sp<GrTexture>       fTexture;
  56     const SkAlphaType      fAlphaType;
  57     const SkBudgeted       fBudgeted;
  58     sk_sp<SkColorSpace>    fColorSpace;
  59     mutable SkAtomic<bool> fAddedRasterVersionToCache;
  60
  61
  62     typedef SkImage_Base INHERITED;
  63 };
  64
  65 #endif