skgpu::graphite::SamplerDesc Struct Reference

#include <ResourceTypes.h>

Public Member Functions
	SamplerDesc (const SkSamplingOptions &samplingOptions, const SkTileMode tileModes[2])
	SamplerDesc (const SamplerDesc &)=default
bool	operator== (const SamplerDesc &o) const
bool	operator!= (const SamplerDesc &o) const
SkTileMode	tileModeX () const
SkTileMode	tileModeY () const
uint32_t	desc () const
SkSamplingOptions	samplingOptions () const

Detailed Description

Struct used to describe how a Texture/TextureProxy/TextureProxyView is sampled.

Definition at line 201 of file ResourceTypes.h.

Constructor & Destructor Documentation

SamplerDesc() [1/2]

skgpu::graphite::SamplerDesc::SamplerDesc ( const SkSamplingOptions &  samplingOptions, const SkTileMode  tileModes[2]  )

inline

Definition at line 203 of file ResourceTypes.h.

            : fDesc((static_cast<int>(tileModes[0])           << kTileModeXShift)  |
                    (static_cast<int>(tileModes[1])           << kTileModeYShift)  |
                    (static_cast<int>(samplingOptions.filter) << kFilterModeShift) |
                    (static_cast<int>(samplingOptions.mipmap) << kMipmapModeShift) ) {
        // Cubic sampling is handled in a shader, with the actual texture sampled by with NN,
        // but that is what a cubic SkSamplingOptions is set to if you ignore 'cubic', which let's
        // us simplify how we construct SamplerDec's from the options passed to high-level draws.
        SkASSERT(!samplingOptions.useCubic || (samplingOptions.filter == SkFilterMode::kNearest &&
                                               samplingOptions.mipmap == SkMipmapMode::kNone));
        static_assert(kMipmapModeShift + kNumMipmapModeBits <= 32);
        // Backend-agnostic sampler information can fit within one uint32_t.
        // TODO: Add aniso value when used.
        static_assert(sizeof(uint32_t) == 4);
    }

SamplerDesc() [2/2]

skgpu::graphite::SamplerDesc::SamplerDesc ( const SamplerDesc &  )

default

Member Function Documentation

desc()

uint32_t skgpu::graphite::SamplerDesc::desc ( ) const

inline

Definition at line 226 of file ResourceTypes.h.

{ return fDesc; }

operator!=()

bool skgpu::graphite::SamplerDesc::operator!= ( const SamplerDesc &  o ) const

inline

Definition at line 222 of file ResourceTypes.h.

{ return o.fDesc != fDesc; }

operator==()

bool skgpu::graphite::SamplerDesc::operator== ( const SamplerDesc &  o ) const

inline

Definition at line 221 of file ResourceTypes.h.

{ return o.fDesc == fDesc; }

samplingOptions()

SkSamplingOptions skgpu::graphite::SamplerDesc::samplingOptions ( ) const

inline

Definition at line 230 of file ResourceTypes.h.

                                              {
        // TODO: Add support for anisotropic filtering
        SkFilterMode filter = static_cast<SkFilterMode>((fDesc >> 4) & 0b01);
        SkMipmapMode mipmap = static_cast<SkMipmapMode>((fDesc >> 5) & 0b11);
        return SkSamplingOptions(filter, mipmap);
    }

tileModeX()

SkTileMode skgpu::graphite::SamplerDesc::tileModeX ( ) const

inline

Definition at line 224 of file ResourceTypes.h.

{ return static_cast<SkTileMode>((fDesc >> 0) & 0b11); }

tileModeY()

SkTileMode skgpu::graphite::SamplerDesc::tileModeY ( ) const

inline

Definition at line 225 of file ResourceTypes.h.

{ return static_cast<SkTileMode>((fDesc >> 2) & 0b11); }

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The documentation for this struct was generated from the following file:

• third_party/skia/src/gpu/graphite/ResourceTypes.h