impeller::AllocatorMTL Class Reference

#include <allocator_mtl.h>

Inheritance diagram for impeller::AllocatorMTL:

Public Member Functions
	AllocatorMTL ()
	~AllocatorMTL () override
Public Member Functions inherited from impeller::Allocator
virtual	~Allocator ()
bool	IsValid () const
std::shared_ptr< DeviceBuffer >	CreateBuffer (const DeviceBufferDescriptor &desc)
std::shared_ptr< Texture >	CreateTexture (const TextureDescriptor &desc)
std::shared_ptr< DeviceBuffer >	CreateBufferWithCopy (const uint8_t *buffer, size_t length)
std::shared_ptr< DeviceBuffer >	CreateBufferWithCopy (const fml::Mapping &mapping)
virtual void	DebugTraceMemoryStatistics () const
	Write debug memory usage information to the dart timeline in debug and profile modes.

Private Member Functions
std::shared_ptr< DeviceBuffer >	OnCreateBuffer (const DeviceBufferDescriptor &desc) override
std::shared_ptr< Texture >	OnCreateTexture (const TextureDescriptor &desc) override
uint16_t	MinimumBytesPerRow (PixelFormat format) const override
	Minimum value for row_bytes on a Texture. The row bytes parameter of that method must be aligned to this value.
ISize	GetMaxTextureSizeSupported () const override

Friends
class	ContextMTL

Additional Inherited Members
Protected Member Functions inherited from impeller::Allocator
	Allocator ()

Detailed Description

Definition at line 15 of file allocator_mtl.h.

Constructor & Destructor Documentation

AllocatorMTL()

impeller::AllocatorMTL::AllocatorMTL

(

)

~AllocatorMTL()

impeller::AllocatorMTL::~AllocatorMTL ( )

overridedefault

Member Function Documentation

GetMaxTextureSizeSupported()

ISize impeller::AllocatorMTL::GetMaxTextureSizeSupported ( ) const

overrideprivatevirtual

Implements impeller::Allocator.

Definition at line 227 of file allocator_mtl.mm.

                                                     {
  return max_texture_supported_;
}

MinimumBytesPerRow()

uint16_t impeller::AllocatorMTL::MinimumBytesPerRow ( PixelFormat  format ) const

overrideprivatevirtual

Minimum value for row_bytes on a Texture. The row bytes parameter of that method must be aligned to this value.

Reimplemented from impeller::Allocator.

Definition at line 222 of file allocator_mtl.mm.

                                                                  {
  return static_cast<uint16_t>([device_
      minimumLinearTextureAlignmentForPixelFormat:ToMTLPixelFormat(format)]);
}

OnCreateBuffer()

std::shared_ptr< DeviceBuffer > impeller::AllocatorMTL::OnCreateBuffer ( const DeviceBufferDescriptor &  desc )

overrideprivatevirtual

Implements impeller::Allocator.

Definition at line 174 of file allocator_mtl.mm.

                                        {
  const auto resource_options = ToMTLResourceOptions(
      desc.storage_mode, supports_memoryless_targets_, supports_uma_);
  const auto storage_mode = ToMTLStorageMode(
      desc.storage_mode, supports_memoryless_targets_, supports_uma_);
 
  auto buffer = [device_ newBufferWithLength:desc.size
                                     options:resource_options];
  if (!buffer) {
    return nullptr;
  }
  return std::shared_ptr<DeviceBufferMTL>(new DeviceBufferMTL(desc,         //
                                                              buffer,       //
                                                              storage_mode  //
                                                              ));
}

OnCreateTexture()

std::shared_ptr< Texture > impeller::AllocatorMTL::OnCreateTexture ( const TextureDescriptor &  desc )

overrideprivatevirtual

Implements impeller::Allocator.

Definition at line 192 of file allocator_mtl.mm.

                                   {
  if (!IsValid()) {
    return nullptr;
  }
 
  auto mtl_texture_desc = ToMTLTextureDescriptor(desc);
 
  if (!mtl_texture_desc) {
    VALIDATION_LOG << "Texture descriptor was invalid.";
    return nullptr;
  }
 
  mtl_texture_desc.storageMode = ToMTLStorageMode(
      desc.storage_mode, supports_memoryless_targets_, supports_uma_);
 
  if (@available(macOS 12.5, ios 15.0, *)) {
    if (desc.compression_type == CompressionType::kLossy &&
        SupportsLossyTextureCompression(device_)) {
      mtl_texture_desc.compressionType = MTLTextureCompressionTypeLossy;
    }
  }
 
  auto texture = [device_ newTextureWithDescriptor:mtl_texture_desc];
  if (!texture) {
    return nullptr;
  }
  return TextureMTL::Create(desc, texture);
}

Friends And Related Symbol Documentation

ContextMTL

friend class ContextMTL

friend

Definition at line 23 of file allocator_mtl.h.

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

• impeller/renderer/backend/metal/allocator_mtl.h
• impeller/renderer/backend/metal/allocator_mtl.mm