| Flutter Impeller |

sampler_library.h
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef FLUTTER_IMPELLER_RENDERER_SAMPLER_LIBRARY_H_
6 #define FLUTTER_IMPELLER_RENDERER_SAMPLER_LIBRARY_H_
7
8 #include "impeller/core/sampler.h"
9 #include "impeller/core/sampler_descriptor.h"
10
11 namespace impeller {
12
13 class SamplerLibrary {
14 public:
15 virtual ~SamplerLibrary();
16
17 /// @brief Retrieve a backend specific sampler object for the given sampler
18 /// descriptor.
19 ///
20 /// If the descriptor is invalid or there is a loss of rendering
21 /// context, this method may return a nullptr.
22 ///
23 /// The sampler library implementations must cache this sampler object
24 /// and guarantee that the reference will continue to be valid
25 /// throughout the lifetime of the Impeller context.
26 virtual const std::unique_ptr<const Sampler>& GetSampler(
27 SamplerDescriptor descriptor) = 0;
28
29 protected:
30 SamplerLibrary();
31
32 private:
33 SamplerLibrary(const SamplerLibrary&) = delete;
34
35 SamplerLibrary& operator=(const SamplerLibrary&) = delete;
36 };
37
38 } // namespace impeller
39
40 #endif // FLUTTER_IMPELLER_RENDERER_SAMPLER_LIBRARY_H_
sampler.h
impeller::SamplerDescriptor
Definition: sampler_descriptor.h:15
sampler_descriptor.h
impeller::SamplerLibrary::~SamplerLibrary
virtual ~SamplerLibrary()
impeller::SamplerLibrary::SamplerLibrary
SamplerLibrary()
impeller::SamplerLibrary
Definition: sampler_library.h:13
impeller
Definition: aiks_blur_unittests.cc:20
impeller::SamplerLibrary::GetSampler
virtual const std::unique_ptr< const Sampler > & GetSampler(SamplerDescriptor descriptor)=0
Retrieve a backend specific sampler object for the given sampler descriptor.