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 GrTextureMaker_DEFINED 9 #define GrTextureMaker_DEFINED 10 11 #include "src/gpu/GrTextureProducer.h" 12 13 /** 14 * Base class for sources that start out as something other than a texture (encoded image, 15 * picture, ...). 16 */ 17 class GrTextureMaker : public GrTextureProducer { 18 public: 19 enum class AllowedTexGenType : bool { kCheap, kAny }; 20 21 std::unique_ptr<GrFragmentProcessor> createFragmentProcessor( 22 const SkMatrix& textureMatrix, 23 const SkRect& constraintRect, 24 FilterConstraint filterConstraint, 25 bool coordsLimitedToConstraintRect, 26 const GrSamplerState::Filter* filterOrNullForBicubic) override; 27 28 protected: GrTextureMaker(GrRecordingContext * context,int width,int height,const GrColorSpaceInfo & info,bool domainNeedsLocal)29 GrTextureMaker(GrRecordingContext* context, int width, int height, const GrColorSpaceInfo& info, 30 bool domainNeedsLocal) 31 : INHERITED(context, width, height, info, domainNeedsLocal) {} 32 33 /** 34 * Return the maker's "original" texture. It is the responsibility of the maker to handle any 35 * caching of the original if desired. 36 * If "genType" argument equals AllowedTexGenType::kCheap and the texture is not trivial to 37 * construct then refOriginalTextureProxy should return nullptr (for example if texture is made 38 * by drawing into a render target). 39 */ 40 virtual sk_sp<GrTextureProxy> refOriginalTextureProxy(bool willBeMipped, 41 AllowedTexGenType genType) = 0; 42 43 private: 44 sk_sp<GrTextureProxy> onRefTextureProxyForParams(const GrSamplerState&, 45 bool willBeMipped, 46 SkScalar scaleAdjust[2]) override; 47 48 typedef GrTextureProducer INHERITED; 49 }; 50 51 #endif 52