diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index 2bf8d68ce..cf1885f92 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -93,6 +93,7 @@ add_library(video_core STATIC
renderer_opengl/utils.h
sampler_cache.cpp
sampler_cache.h
+ shader_cache.h
shader/decode/arithmetic.cpp
shader/decode/arithmetic_immediate.cpp
shader/decode/bfe.cpp
diff --git a/src/video_core/shader_cache.h b/src/video_core/shader_cache.h
new file mode 100644
index 000000000..a23c23886
--- /dev/null
+++ b/src/video_core/shader_cache.h
@@ -0,0 +1,228 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <algorithm>
+#include <memory>
+#include <mutex>
+#include <unordered_map>
+#include <utility>
+#include <vector>
+
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "video_core/rasterizer_interface.h"
+
+namespace VideoCommon {
+
+template <class T>
+class ShaderCache {
+ static constexpr u64 PAGE_SHIFT = 14;
+
+ struct Entry {
+ VAddr addr_start;
+ VAddr addr_end;
+ T* data;
+
+ bool is_memory_marked = true;
+
+ constexpr bool Overlaps(VAddr start, VAddr end) const noexcept {
+ return start < addr_end && addr_start < end;
+ }
+ };
+
+public:
+ virtual ~ShaderCache() = default;
+
+ /// @brief Removes shaders inside a given region
+ /// @note Checks for ranges
+ /// @param addr Start address of the invalidation
+ /// @param size Number of bytes of the invalidation
+ void InvalidateRegion(VAddr addr, std::size_t size) {
+ std::scoped_lock lock{invalidation_mutex};
+ InvalidatePagesInRegion(addr, size);
+ RemovePendingShaders();
+ }
+
+ /// @brief Unmarks a memory region as cached and marks it for removal
+ /// @param addr Start address of the CPU write operation
+ /// @param size Number of bytes of the CPU write operation
+ void OnCPUWrite(VAddr addr, std::size_t size) {
+ std::lock_guard lock{invalidation_mutex};
+ InvalidatePagesInRegion(addr, size);
+ }
+
+ /// @brief Flushes delayed removal operations
+ void SyncGuestHost() {
+ std::scoped_lock lock{invalidation_mutex};
+ RemovePendingShaders();
+ }
+
+ /// @brief Tries to obtain a cached shader starting in a given address
+ /// @note Doesn't check for ranges, the given address has to be the start of the shader
+ /// @param addr Start address of the shader, this doesn't cache for region
+ /// @return Pointer to a valid shader, nullptr when nothing is found
+ T* TryGet(VAddr addr) const {
+ std::scoped_lock lock{lookup_mutex};
+
+ const auto it = lookup_cache.find(addr);
+ if (it == lookup_cache.end()) {
+ return nullptr;
+ }
+ return it->second->data;
+ }
+
+protected:
+ explicit ShaderCache(VideoCore::RasterizerInterface& rasterizer_) : rasterizer{rasterizer_} {}
+
+ /// @brief Register in the cache a given entry
+ /// @param data Shader to store in the cache
+ /// @param addr Start address of the shader that will be registered
+ /// @param size Size in bytes of the shader
+ void Register(std::unique_ptr<T> data, VAddr addr, std::size_t size) {
+ std::scoped_lock lock{invalidation_mutex, lookup_mutex};
+
+ const VAddr addr_end = addr + size;
+ Entry* const entry = NewEntry(addr, addr_end, data.get());
+
+ const u64 page_end = addr_end >> PAGE_SHIFT;
+ for (u64 page = addr >> PAGE_SHIFT; page <= page_end; ++page) {
+ invalidation_cache[page].push_back(entry);
+ }
+
+ storage.push_back(std::move(data));
+
+ rasterizer.UpdatePagesCachedCount(addr, size, 1);
+ }
+
+ /// @brief Called when a shader is going to be removed
+ /// @param shader Shader that will be removed
+ /// @pre invalidation_cache is locked
+ /// @pre lookup_mutex is locked
+ virtual void OnShaderRemoval([[maybe_unused]] T* shader) {}
+
+private:
+ /// @brief Invalidate pages in a given region
+ /// @pre invalidation_mutex is locked
+ void InvalidatePagesInRegion(VAddr addr, std::size_t size) {
+ const VAddr addr_end = addr + size;
+ const u64 page_end = addr_end >> PAGE_SHIFT;
+ for (u64 page = addr >> PAGE_SHIFT; page <= page_end; ++page) {
+ const auto it = invalidation_cache.find(page);
+ if (it == invalidation_cache.end()) {
+ continue;
+ }
+
+ std::vector<Entry*>& entries = it->second;
+ InvalidatePageEntries(entries, addr, addr_end);
+
+ // If there's nothing else in this page, remove it to avoid overpopulating the hash map.
+ if (entries.empty()) {
+ invalidation_cache.erase(it);
+ }
+ }
+ }
+
+ /// @brief Remove shaders marked for deletion
+ /// @pre invalidation_mutex is locked
+ void RemovePendingShaders() {
+ if (marked_for_removal.empty()) {
+ return;
+ }
+ std::scoped_lock lock{lookup_mutex};
+
+ std::vector<T*> removed_shaders;
+ removed_shaders.reserve(marked_for_removal.size());
+
+ for (Entry* const entry : marked_for_removal) {
+ if (lookup_cache.erase(entry->addr_start) > 0) {
+ removed_shaders.push_back(entry->data);
+ }
+ }
+ marked_for_removal.clear();
+
+ if (!removed_shaders.empty()) {
+ RemoveShadersFromStorage(std::move(removed_shaders));
+ }
+ }
+
+ /// @brief Invalidates entries in a given range for the passed page
+ /// @param entries Vector of entries in the page, it will be modified on overlaps
+ /// @param addr Start address of the invalidation
+ /// @param addr_end Non-inclusive end address of the invalidation
+ /// @pre invalidation_mutex is locked
+ void InvalidatePageEntries(std::vector<Entry*>& entries, VAddr addr, VAddr addr_end) {
+ auto it = entries.begin();
+ while (it != entries.end()) {
+ Entry* const entry = *it;
+ if (!entry->Overlaps(addr, addr_end)) {
+ ++it;
+ continue;
+ }
+ UnmarkMemory(entry);
+ marked_for_removal.push_back(entry);
+
+ it = entries.erase(it);
+ }
+ }
+
+ /// @brief Unmarks an entry from the rasterizer cache
+ /// @param entry Entry to unmark from memory
+ void UnmarkMemory(Entry* entry) {
+ if (!entry->is_memory_marked) {
+ return;
+ }
+ entry->is_memory_marked = false;
+
+ const VAddr addr = entry->addr_start;
+ const std::size_t size = entry->addr_end - addr;
+ rasterizer.UpdatePagesCachedCount(addr, size, -1);
+ }
+
+ /// @brief Removes a vector of shaders from a list
+ /// @param removed_shaders Shaders to be removed from the storage, it can contain duplicates
+ /// @pre invalidation_mutex is locked
+ /// @pre lookup_mutex is locked
+ void RemoveShadersFromStorage(std::vector<T*> removed_shaders) {
+ // Remove duplicates
+ std::sort(removed_shaders.begin(), removed_shaders.end());
+ removed_shaders.erase(std::unique(removed_shaders.begin(), removed_shaders.end()),
+ removed_shaders.end());
+
+ // Now that there are no duplicates, we can notify removals
+ for (T* const shader : removed_shaders) {
+ OnShaderRemoval(shader);
+ }
+
+ // Remove them from the cache
+ const auto is_removed = [&removed_shaders](std::unique_ptr<T>& shader) {
+ return std::find(removed_shaders.begin(), removed_shaders.end(), shader.get()) !=
+ removed_shaders.end();
+ };
+ storage.erase(std::remove_if(storage.begin(), storage.end(), is_removed), storage.end());
+ }
+
+ /// @brief Creates a new entry in the lookup cache and returns its pointer
+ /// @pre lookup_mutex is locked
+ Entry* NewEntry(VAddr addr, VAddr addr_end, T* data) {
+ auto entry = std::make_unique<Entry>(Entry{addr, addr_end, data});
+ Entry* const entry_pointer = entry.get();
+
+ lookup_cache.emplace(addr, std::move(entry));
+ return entry_pointer;
+ }
+
+ VideoCore::RasterizerInterface& rasterizer;
+
+ mutable std::mutex lookup_mutex;
+ std::mutex invalidation_mutex;
+
+ std::unordered_map<u64, std::unique_ptr<Entry>> lookup_cache;
+ std::unordered_map<u64, std::vector<Entry*>> invalidation_cache;
+ std::vector<std::unique_ptr<T>> storage;
+ std::vector<Entry*> marked_for_removal;
+};
+
+} // namespace VideoCommon