#include <GrMtlSampler.h>

Inheritance diagram for GrMtlSampler:

Public Types
typedef uint32_t	Key

Public Member Functions
	~GrMtlSampler () override

id< MTLSamplerState >	mtlSampler () const

void	freeGPUData () const override

Public Member Functions inherited from GrManagedResource
	GrManagedResource ()

virtual	~GrManagedResource ()

bool	unique () const

void	ref () const

void	unref () const

Static Public Member Functions
static GrMtlSampler *	Create (const GrMtlGpu *gpu, GrSamplerState)

static Key	GenerateKey (GrSamplerState)

static const Key &	GetKey (const GrMtlSampler &sampler)

static uint32_t	Hash (const Key &key)

Detailed Description

Definition at line 21 of file GrMtlSampler.h.

Member Typedef Documentation

◆ Key

typedef uint32_t GrMtlSampler::Key

Definition at line 28 of file GrMtlSampler.h.

Constructor & Destructor Documentation

◆ ~GrMtlSampler()

GrMtlSampler::~GrMtlSampler ( )

inlineoverride

Definition at line 24 of file GrMtlSampler.h.

24{ fMtlSamplerState = nil; }

Member Function Documentation

◆ Create()

GrMtlSampler * GrMtlSampler::Create	(	const GrMtlGpu *	gpu,
		GrSamplerState	samplerState
	)

static

Definition at line 45 of file GrMtlSampler.mm.

                                                                                   {
    MTLSamplerMinMagFilter minMagFilter = [&] {
        switch (samplerState.filter()) {
            case GrSamplerState::Filter::kNearest: return MTLSamplerMinMagFilterNearest;
            case GrSamplerState::Filter::kLinear:  return MTLSamplerMinMagFilterLinear;
        }
        SkUNREACHABLE;
    }();
 
    MTLSamplerMipFilter mipFilter = [&] {
      switch (samplerState.mipmapMode()) {
          case GrSamplerState::MipmapMode::kNone:    return MTLSamplerMipFilterNotMipmapped;
          case GrSamplerState::MipmapMode::kNearest: return MTLSamplerMipFilterNearest;
          case GrSamplerState::MipmapMode::kLinear:  return MTLSamplerMipFilterLinear;
      }
      SkUNREACHABLE;
    }();
 
    auto samplerDesc = [[MTLSamplerDescriptor alloc] init];
    samplerDesc.rAddressMode = MTLSamplerAddressModeClampToEdge;
    samplerDesc.sAddressMode = wrap_mode_to_mtl_sampler_address(samplerState.wrapModeX(),
                                                                gpu->mtlCaps());
    samplerDesc.tAddressMode = wrap_mode_to_mtl_sampler_address(samplerState.wrapModeY(),
                                                                gpu->mtlCaps());
    samplerDesc.magFilter = minMagFilter;
    samplerDesc.minFilter = minMagFilter;
    samplerDesc.mipFilter = mipFilter;
    samplerDesc.lodMinClamp = 0.0f;
    samplerDesc.lodMaxClamp = FLT_MAX;  // default value according to docs.
    // Metal documents that maxAnisotropy must be between 1 and 16 inclusive.
    samplerDesc.maxAnisotropy = std::min(samplerState.maxAniso(), 16);
    samplerDesc.normalizedCoordinates = true;
    if (@available(macOS 10.11, iOS 9.0, tvOS 9.0, *)) {
        samplerDesc.compareFunction = MTLCompareFunctionNever;
    }
 
    return new GrMtlSampler([gpu->device() newSamplerStateWithDescriptor: samplerDesc],
                            GenerateKey(samplerState));
}

◆ freeGPUData()

void GrMtlSampler::freeGPUData ( ) const

inlineoverridevirtual

Must be implemented by any subclasses. Deletes any GPU data associated with this resource

Implements GrManagedResource.

Definition at line 47 of file GrMtlSampler.h.

                                      {
        fMtlSamplerState = nil;
    }

◆ GenerateKey()

GrMtlSampler::Key GrMtlSampler::GenerateKey ( GrSamplerState samplerState )

static

Definition at line 85 of file GrMtlSampler.mm.

                                                                     {
    // We haven't found any documentation on how anisotropy interacts with other filter settings
    // so assume they are all considered.
    return samplerState.asKey(/*anisoIsOrthogonal=*/true);
}

◆ GetKey()

static const Key & GrMtlSampler::GetKey ( const GrMtlSampler & sampler )

inlinestatic

Definition at line 33 of file GrMtlSampler.h.

33{ return sampler.fKey; }

◆ Hash()

static uint32_t GrMtlSampler::Hash ( const Key & key )

inlinestatic

Definition at line 34 of file GrMtlSampler.h.

                                         {
        return SkChecksum::Hash32(&key, sizeof(Key));
    }

◆ mtlSampler()

id< MTLSamplerState > GrMtlSampler::mtlSampler ( ) const

inline

Definition at line 26 of file GrMtlSampler.h.

26{ return fMtlSamplerState; }

The documentation for this class was generated from the following files:

third_party/skia/src/gpu/ganesh/mtl/GrMtlSampler.h
third_party/skia/src/gpu/ganesh/mtl/GrMtlSampler.mm

Public Types

Public Member Functions

Static Public Member Functions