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 GrRenderTargetPriv_DEFINED 9 #define GrRenderTargetPriv_DEFINED 10 11 #include "GrRenderTarget.h" 12 #include "GrGpu.h" 13 14 class GrStencilSettings; 15 16 /** Class that adds methods to GrRenderTarget that are only intended for use internal to Skia. 17 This class is purely a privileged window into GrRenderTarget. It should never have additional 18 data members or virtual methods. */ 19 class GrRenderTargetPriv { 20 public: 21 /** 22 * GrStencilAttachment is not part of the public API. 23 */ 24 GrStencilAttachment* getStencilAttachment() const { return fRenderTarget->fStencilAttachment; } 25 26 /** 27 * Attaches the GrStencilAttachment onto the render target. If stencil is a nullptr then the 28 * currently attached GrStencilAttachment will be removed if one was previously attached. This 29 * function returns false if there were any failure in attaching the GrStencilAttachment. 30 */ 31 bool attachStencilAttachment(GrStencilAttachment* stencil); 32 33 int numStencilBits() const; 34 35 // Finds a render target's multisample specs. The pipeline is only needed in case the info isn't 36 // cached and we need to flush the draw state in order to query it. The pipeline is not expected 37 // to affect the multisample information itself. 38 const GrGpu::MultisampleSpecs& getMultisampleSpecs(const GrPipeline&) const; 39 40 typedef GrRenderTarget::Flags Flags; 41 42 Flags flags() const { return fRenderTarget->fFlags; } 43 44 private: 45 explicit GrRenderTargetPriv(GrRenderTarget* renderTarget) : fRenderTarget(renderTarget) {} 46 GrRenderTargetPriv(const GrRenderTargetPriv&) {} // unimpl 47 GrRenderTargetPriv& operator=(const GrRenderTargetPriv&); // unimpl 48 49 // No taking addresses of this type. 50 const GrRenderTargetPriv* operator&() const; 51 GrRenderTargetPriv* operator&(); 52 53 GrRenderTarget* fRenderTarget; 54 55 friend class GrRenderTarget; // to construct/copy this type. 56 }; 57 58 inline GrRenderTargetPriv GrRenderTarget::renderTargetPriv() { return GrRenderTargetPriv(this); } 59 60 inline const GrRenderTargetPriv GrRenderTarget::renderTargetPriv () const { 61 return GrRenderTargetPriv(const_cast<GrRenderTarget*>(this)); 62 } 63 64 #endif 65
