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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 "include/gpu/GrRenderTarget.h"
- #include "src/gpu/GrGpu.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 {
- public:
- /**
- * 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);
- }
- private:
- 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));
- }
- #endif
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