1 /* 2 * Copyright 2021 Google LLC 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 GrDstProxyView_DEFINED 9 #define GrDstProxyView_DEFINED 10 11 #include "include/core/SkPoint.h" 12 #include "include/private/base/SkTypeTraits.h" 13 #include "include/private/gpu/ganesh/GrTypesPriv.h" 14 #include "src/gpu/ganesh/GrSurfaceProxyView.h" 15 16 #include <type_traits> 17 #include <utility> 18 19 class GrSurfaceProxy; 20 21 /** 22 * GrDstProxyView holds a texture containing the destination pixel values, and an integer-coordinate 23 * offset from device-space to the space of the texture. When framebuffer fetch is not available, a 24 * GrDstProxyView may be used to support blending in the fragment shader/xfer processor. 25 */ 26 class GrDstProxyView { 27 public: GrDstProxyView()28 GrDstProxyView() {} 29 GrDstProxyView(const GrDstProxyView & other)30 GrDstProxyView(const GrDstProxyView& other) { 31 *this = other; 32 } 33 34 GrDstProxyView& operator=(const GrDstProxyView& other) { 35 fProxyView = other.fProxyView; 36 fOffset = other.fOffset; 37 fDstSampleFlags = other.fDstSampleFlags; 38 return *this; 39 } 40 41 bool operator==(const GrDstProxyView& that) const { 42 return fProxyView == that.fProxyView && 43 fOffset == that.fOffset && 44 fDstSampleFlags == that.fDstSampleFlags; 45 } 46 bool operator!=(const GrDstProxyView& that) const { return !(*this == that); } 47 offset()48 const SkIPoint& offset() const { return fOffset; } 49 setOffset(const SkIPoint & offset)50 void setOffset(const SkIPoint& offset) { fOffset = offset; } setOffset(int ox,int oy)51 void setOffset(int ox, int oy) { fOffset.set(ox, oy); } 52 proxy()53 GrSurfaceProxy* proxy() const { return fProxyView.proxy(); } proxyView()54 const GrSurfaceProxyView& proxyView() const { return fProxyView; } 55 setProxyView(GrSurfaceProxyView view)56 void setProxyView(GrSurfaceProxyView view) { 57 fProxyView = std::move(view); 58 if (!fProxyView.proxy()) { 59 fOffset = {0, 0}; 60 } 61 } 62 dstSampleFlags()63 GrDstSampleFlags dstSampleFlags() const { return fDstSampleFlags; } 64 setDstSampleFlags(GrDstSampleFlags dstSampleFlags)65 void setDstSampleFlags(GrDstSampleFlags dstSampleFlags) { fDstSampleFlags = dstSampleFlags; } 66 67 using sk_is_trivially_relocatable = std::true_type; 68 69 private: 70 GrSurfaceProxyView fProxyView; 71 SkIPoint fOffset = {0, 0}; 72 GrDstSampleFlags fDstSampleFlags = GrDstSampleFlags::kNone; 73 74 static_assert(::sk_is_trivially_relocatable<decltype(fProxyView)>::value); 75 static_assert(::sk_is_trivially_relocatable<decltype(fOffset)>::value); 76 static_assert(::sk_is_trivially_relocatable<decltype(fDstSampleFlags)>::value); 77 }; 78 79 #endif 80