Line data    Source code

       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           0 :     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           0 :     Flags flags() const { return fRenderTarget->fFlags; }
      43             : 
      44             : private:
      45           0 :     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           0 : 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