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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef GrTextureAdjuster_DEFINED
- #define GrTextureAdjuster_DEFINED
- #include "src/core/SkTLazy.h"
- #include "src/gpu/GrTextureProducer.h"
- #include "src/gpu/GrTextureProxy.h"
- class GrRecordingContext;
- /**
- * Base class for sources that start out as textures. Optionally allows for a content area subrect.
- * The intent is not to use content area for subrect rendering. Rather, the pixels outside the
- * content area have undefined values and shouldn't be read *regardless* of filtering mode or
- * the SkCanvas::SrcRectConstraint used for subrect draws.
- */
- class GrTextureAdjuster : public GrTextureProducer {
- public:
- std::unique_ptr<GrFragmentProcessor> createFragmentProcessor(
- const SkMatrix& textureMatrix,
- const SkRect& constraintRect,
- FilterConstraint,
- bool coordsLimitedToConstraintRect,
- const GrSamplerState::Filter* filterOrNullForBicubic) override;
- // We do not ref the texture nor the colorspace, so the caller must keep them in scope while
- // this Adjuster is alive.
- GrTextureAdjuster(GrRecordingContext*, sk_sp<GrTextureProxy>, GrColorType, SkAlphaType,
- uint32_t uniqueID, SkColorSpace*, bool useDecal = false);
- protected:
- void makeCopyKey(const CopyParams& params, GrUniqueKey* copyKey) override;
- void didCacheCopy(const GrUniqueKey& copyKey, uint32_t contextUniqueID) override;
- GrTextureProxy* originalProxy() const { return fOriginal.get(); }
- sk_sp<GrTextureProxy> originalProxyRef() const { return fOriginal; }
- private:
- sk_sp<GrTextureProxy> onRefTextureProxyForParams(const GrSamplerState&,
- bool willBeMipped,
- SkScalar scaleAdjust[2]) override;
- sk_sp<GrTextureProxy> refTextureProxyCopy(const CopyParams& copyParams, bool willBeMipped);
- sk_sp<GrTextureProxy> fOriginal;
- uint32_t fUniqueID;
- typedef GrTextureProducer INHERITED;
- };
- #endif
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