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* Copyright 2015 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrRenderTargetPriv_DEFINED
#define GrRenderTargetPriv_DEFINED
#include "src/gpu/GrGpu.h"
#include "src/gpu/GrRenderTarget.h"
class GrStencilSettings;
/** Class that adds methods to GrRenderTarget that are only intended for use internal to Skia.
This class is purely a privileged window into GrRenderTarget. It should never have additional
data members or virtual methods. */
class GrRenderTargetPriv {
* GrStencilAttachment is not part of the public API.
GrStencilAttachment* getStencilAttachment() const {
return fRenderTarget->fStencilAttachment.get();
* Attaches the GrStencilAttachment onto the render target. If stencil is a nullptr then the
* currently attached GrStencilAttachment will be removed if one was previously attached. This
* function returns false if there were any failure in attaching the GrStencilAttachment.
void attachStencilAttachment(sk_sp<GrStencilAttachment> stencil);
int numStencilBits() const;
* Returns a unique key that identifies this render target's sample pattern. (Must be
* multisampled.)
int getSamplePatternKey() const;
* Retrieves the per-pixel HW sample locations for this render target, and, as a by-product, the
* actual number of samples in use. (This may differ from fSampleCnt.) Sample locations are
* returned as 0..1 offsets relative to the top-left corner of the pixel.
const SkTArray<SkPoint>& getSampleLocations() const {
int samplePatternKey = this->getSamplePatternKey();
return fRenderTarget->getGpu()->retrieveSampleLocations(samplePatternKey);
explicit GrRenderTargetPriv(GrRenderTarget* renderTarget) : fRenderTarget(renderTarget) {}
GrRenderTargetPriv(const GrRenderTargetPriv&) {} // unimpl
GrRenderTargetPriv& operator=(const GrRenderTargetPriv&); // unimpl
// No taking addresses of this type.
const GrRenderTargetPriv* operator&() const;
GrRenderTargetPriv* operator&();
GrRenderTarget* fRenderTarget;
friend class GrRenderTarget; // to construct/copy this type.
inline GrRenderTargetPriv GrRenderTarget::renderTargetPriv() { return GrRenderTargetPriv(this); }
inline const GrRenderTargetPriv GrRenderTarget::renderTargetPriv () const {
return GrRenderTargetPriv(const_cast<GrRenderTarget*>(this));