sampler_mtl.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#pragma once
 
#include <Metal/Metal.h>
 
#include "flutter/fml/macros.h"
#include "impeller/base/backend_cast.h"
#include "impeller/core/sampler.h"
 
namespace impeller {
 
class SamplerLibraryMTL;
 
class SamplerMTL final : public Sampler,
                         public BackendCast<SamplerMTL, Sampler> {
 public:
  SamplerMTL();
 
  // |Sampler|
  ~SamplerMTL() override;
 
  id<MTLSamplerState> GetMTLSamplerState() const;
 
 private:
  friend SamplerLibraryMTL;
 
  id<MTLSamplerState> state_ = nullptr;
 
  SamplerMTL(SamplerDescriptor desc, id<MTLSamplerState> state);
 
  // |Sampler|
  bool IsValid() const override;
 
  FML_DISALLOW_COPY_AND_ASSIGN(SamplerMTL);
};
 
}  // namespace impeller