1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <set>
#include <boost/icl/interval_map.hpp>
#include <boost/range/iterator_range_core.hpp>
#include "common/common_types.h"
#include "core/core.h"
#include "core/settings.h"
#include "video_core/rasterizer_interface.h"
#include "video_core/renderer_base.h"
class RasterizerCacheObject {
public:
/// Gets the address of the shader in guest memory, required for cache management
virtual VAddr GetAddr() const = 0;
/// Gets the size of the shader in guest memory, required for cache management
virtual std::size_t GetSizeInBytes() const = 0;
/// Wriets any cached resources back to memory
virtual void Flush() = 0;
/// Sets whether the cached object should be considered registered
void SetIsRegistered(bool registered) {
is_registered = registered;
}
/// Returns true if the cached object is registered
bool IsRegistered() const {
return is_registered;
}
/// Returns true if the cached object is dirty
bool IsDirty() const {
return is_dirty;
}
/// Returns ticks from when this cached object was last modified
u64 GetLastModifiedTicks() const {
return last_modified_ticks;
}
/// Marks an object as recently modified, used to specify whether it is clean or dirty
template <class T>
void MarkAsModified(bool dirty, T& cache) {
is_dirty = dirty;
last_modified_ticks = cache.GetModifiedTicks();
}
private:
bool is_registered{}; ///< Whether the object is currently registered with the cache
bool is_dirty{}; ///< Whether the object is dirty (out of sync with guest memory)
u64 last_modified_ticks{}; ///< When the object was last modified, used for in-order flushing
};
template <class T>
class RasterizerCache : NonCopyable {
friend class RasterizerCacheObject;
public:
/// Write any cached resources overlapping the specified region back to memory
void FlushRegion(Tegra::GPUVAddr addr, size_t size) {
const auto& objects{GetSortedObjectsFromRegion(addr, size)};
for (auto& object : objects) {
FlushObject(object);
}
}
/// Mark the specified region as being invalidated
void InvalidateRegion(VAddr addr, u64 size) {
const auto& objects{GetSortedObjectsFromRegion(addr, size)};
for (auto& object : objects) {
if (!object->IsRegistered()) {
// Skip duplicates
continue;
}
Unregister(object);
}
}
/// Invalidates everything in the cache
void InvalidateAll() {
while (object_cache.begin() != object_cache.end()) {
Unregister(*object_cache.begin()->second.begin());
}
}
protected:
/// Tries to get an object from the cache with the specified address
T TryGet(VAddr addr) const {
const ObjectInterval interval{addr};
for (auto& pair : boost::make_iterator_range(object_cache.equal_range(interval))) {
for (auto& cached_object : pair.second) {
if (cached_object->GetAddr() == addr) {
return cached_object;
}
}
}
return nullptr;
}
/// Register an object into the cache
void Register(const T& object) {
object->SetIsRegistered(true);
object_cache.add({GetInterval(object), ObjectSet{object}});
auto& rasterizer = Core::System::GetInstance().Renderer().Rasterizer();
rasterizer.UpdatePagesCachedCount(object->GetAddr(), object->GetSizeInBytes(), 1);
}
/// Unregisters an object from the cache
void Unregister(const T& object) {
object->SetIsRegistered(false);
auto& rasterizer = Core::System::GetInstance().Renderer().Rasterizer();
rasterizer.UpdatePagesCachedCount(object->GetAddr(), object->GetSizeInBytes(), -1);
// Only flush if use_accurate_gpu_emulation is enabled, as it incurs a performance hit
if (Settings::values.use_accurate_gpu_emulation) {
FlushObject(object);
}
object_cache.subtract({GetInterval(object), ObjectSet{object}});
}
/// Returns a ticks counter used for tracking when cached objects were last modified
u64 GetModifiedTicks() {
return ++modified_ticks;
}
private:
/// Returns a list of cached objects from the specified memory region, ordered by access time
std::vector<T> GetSortedObjectsFromRegion(VAddr addr, u64 size) {
if (size == 0) {
return {};
}
std::vector<T> objects;
const ObjectInterval interval{addr, addr + size};
for (auto& pair : boost::make_iterator_range(object_cache.equal_range(interval))) {
for (auto& cached_object : pair.second) {
if (!cached_object) {
continue;
}
objects.push_back(cached_object);
}
}
std::sort(objects.begin(), objects.end(), [](const T& a, const T& b) -> bool {
return a->GetLastModifiedTicks() < b->GetLastModifiedTicks();
});
return objects;
}
/// Flushes the specified object, updating appropriate cache state as needed
void FlushObject(const T& object) {
if (!object->IsDirty()) {
return;
}
object->Flush();
object->MarkAsModified(false, *this);
}
using ObjectSet = std::set<T>;
using ObjectCache = boost::icl::interval_map<VAddr, ObjectSet>;
using ObjectInterval = typename ObjectCache::interval_type;
static auto GetInterval(const T& object) {
return ObjectInterval::right_open(object->GetAddr(),
object->GetAddr() + object->GetSizeInBytes());
}
ObjectCache object_cache; ///< Cache of objects
u64 modified_ticks{}; ///< Counter of cache state ticks, used for in-order flushing
};
|
