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-rw-r--r-- | src/video_core/sampler_cache.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/video_core/sampler_cache.h b/src/video_core/sampler_cache.h new file mode 100644 index 000000000..cbe3ad071 --- /dev/null +++ b/src/video_core/sampler_cache.h @@ -0,0 +1,60 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <cstddef> +#include <unordered_map> + +#include "video_core/textures/texture.h" + +namespace VideoCommon { + +struct SamplerCacheKey final : public Tegra::Texture::TSCEntry { + std::size_t Hash() const; + + bool operator==(const SamplerCacheKey& rhs) const; + + bool operator!=(const SamplerCacheKey& rhs) const { + return !operator==(rhs); + } +}; + +} // namespace VideoCommon + +namespace std { + +template <> +struct hash<VideoCommon::SamplerCacheKey> { + std::size_t operator()(const VideoCommon::SamplerCacheKey& k) const noexcept { + return k.Hash(); + } +}; + +} // namespace std + +namespace VideoCommon { + +template <typename SamplerType, typename SamplerStorageType> +class SamplerCache { +public: + SamplerType GetSampler(const Tegra::Texture::TSCEntry& tsc) { + const auto [entry, is_cache_miss] = cache.try_emplace(SamplerCacheKey{tsc}); + auto& sampler = entry->second; + if (is_cache_miss) { + sampler = CreateSampler(tsc); + } + return ToSamplerType(sampler); + } + +protected: + virtual SamplerStorageType CreateSampler(const Tegra::Texture::TSCEntry& tsc) const = 0; + + virtual SamplerType ToSamplerType(const SamplerStorageType& sampler) const = 0; + +private: + std::unordered_map<SamplerCacheKey, SamplerStorageType> cache; +}; + +} // namespace VideoCommon
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