impeller::SamplerLibraryGLES Class Reference

#include <sampler_library_gles.h>

Inheritance diagram for impeller::SamplerLibraryGLES:

Public Member Functions
	SamplerLibraryGLES (bool supports_decal_sampler_address_mode)
	~SamplerLibraryGLES () override
Public Member Functions inherited from impeller::SamplerLibrary
virtual	~SamplerLibrary ()

Private Member Functions
const std::unique_ptr< const Sampler > &	GetSampler (SamplerDescriptor descriptor) override
	Retrieve a backend specific sampler object for the given sampler descriptor.

Friends
class	ContextGLES

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

Detailed Description

Definition at line 14 of file sampler_library_gles.h.

Constructor & Destructor Documentation

SamplerLibraryGLES()

impeller::SamplerLibraryGLES::SamplerLibraryGLES ( bool  supports_decal_sampler_address_mode )

explicit

Definition at line 16 of file sampler_library_gles.cc.

    : supports_decal_sampler_address_mode_(
          supports_decal_sampler_address_mode) {}

~SamplerLibraryGLES()

impeller::SamplerLibraryGLES::~SamplerLibraryGLES ( )

overridedefault

Member Function Documentation

GetSampler()

const std::unique_ptr< const Sampler > & impeller::SamplerLibraryGLES::GetSampler ( SamplerDescriptor  descriptor )

overrideprivatevirtual

Retrieve a backend specific sampler object for the given sampler descriptor.

If the descriptor is invalid or there is a loss of rendering context, this method may return a nullptr.

The sampler library implementations must cache this sampler object and guarantee that the reference will continue to be valid throughout the lifetime of the Impeller context.

Implements impeller::SamplerLibrary.

Definition at line 24 of file sampler_library_gles.cc.

                                  {
  if (!supports_decal_sampler_address_mode_ &&
      (descriptor.width_address_mode == SamplerAddressMode::kDecal ||
       descriptor.height_address_mode == SamplerAddressMode::kDecal ||
       descriptor.depth_address_mode == SamplerAddressMode::kDecal)) {
    VALIDATION_LOG << "SamplerAddressMode::kDecal is not supported by the "
                      "current OpenGLES backend.";
    return kNullSampler;
  }
 
  auto found = samplers_.find(descriptor);
  if (found != samplers_.end()) {
    return found->second;
  }
  return (samplers_[descriptor] =
              std::unique_ptr<SamplerGLES>(new SamplerGLES(descriptor)));
}

Friends And Related Symbol Documentation

ContextGLES

friend class ContextGLES

friend

Definition at line 21 of file sampler_library_gles.h.

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

• impeller/renderer/backend/gles/sampler_library_gles.h
• impeller/renderer/backend/gles/sampler_library_gles.cc