summaryrefslogtreecommitdiffstats
path: root/src/video_core/shader_cache.cpp
blob: a109f9cbe9427c30c612abd2f7b90b71fc99a99e (plain) (blame)
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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#include <algorithm>
#include <array>
#include <vector>

#include "common/assert.h"
#include "shader_recompiler/frontend/maxwell/control_flow.h"
#include "shader_recompiler/object_pool.h"
#include "video_core/control/channel_state.h"
#include "video_core/dirty_flags.h"
#include "video_core/engines/kepler_compute.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/memory_manager.h"
#include "video_core/shader_cache.h"
#include "video_core/shader_environment.h"

namespace VideoCommon {

void ShaderCache::InvalidateRegion(VAddr addr, size_t size) {
    std::scoped_lock lock{invalidation_mutex};
    InvalidatePagesInRegion(addr, size);
    RemovePendingShaders();
}

void ShaderCache::OnCacheInvalidation(VAddr addr, size_t size) {
    std::scoped_lock lock{invalidation_mutex};
    InvalidatePagesInRegion(addr, size);
}

void ShaderCache::SyncGuestHost() {
    std::scoped_lock lock{invalidation_mutex};
    RemovePendingShaders();
}

ShaderCache::ShaderCache(VideoCore::RasterizerInterface& rasterizer_) : rasterizer{rasterizer_} {}

bool ShaderCache::RefreshStages(std::array<u64, 6>& unique_hashes) {
    auto& dirty{maxwell3d->dirty.flags};
    if (!dirty[VideoCommon::Dirty::Shaders]) {
        return last_shaders_valid;
    }
    dirty[VideoCommon::Dirty::Shaders] = false;

    const GPUVAddr base_addr{maxwell3d->regs.program_region.Address()};
    for (size_t index = 0; index < Tegra::Engines::Maxwell3D::Regs::MaxShaderProgram; ++index) {
        if (!maxwell3d->regs.IsShaderConfigEnabled(index)) {
            unique_hashes[index] = 0;
            continue;
        }
        const auto& shader_config{maxwell3d->regs.pipelines[index]};
        const auto program{static_cast<Tegra::Engines::Maxwell3D::Regs::ShaderType>(index)};
        if (program == Tegra::Engines::Maxwell3D::Regs::ShaderType::Pixel &&
            !maxwell3d->regs.rasterize_enable) {
            unique_hashes[index] = 0;
            continue;
        }
        const GPUVAddr shader_addr{base_addr + shader_config.offset};
        const std::optional<VAddr> cpu_shader_addr{gpu_memory->GpuToCpuAddress(shader_addr)};
        if (!cpu_shader_addr) {
            LOG_ERROR(HW_GPU, "Invalid GPU address for shader 0x{:016x}", shader_addr);
            last_shaders_valid = false;
            return false;
        }
        const ShaderInfo* shader_info{TryGet(*cpu_shader_addr)};
        if (!shader_info) {
            const u32 start_address{shader_config.offset};
            GraphicsEnvironment env{*maxwell3d, *gpu_memory, program, base_addr, start_address};
            shader_info = MakeShaderInfo(env, *cpu_shader_addr);
        }
        shader_infos[index] = shader_info;
        unique_hashes[index] = shader_info->unique_hash;
    }
    last_shaders_valid = true;
    return true;
}

const ShaderInfo* ShaderCache::ComputeShader() {
    const GPUVAddr program_base{kepler_compute->regs.code_loc.Address()};
    const auto& qmd{kepler_compute->launch_description};
    const GPUVAddr shader_addr{program_base + qmd.program_start};
    const std::optional<VAddr> cpu_shader_addr{gpu_memory->GpuToCpuAddress(shader_addr)};
    if (!cpu_shader_addr) {
        LOG_ERROR(HW_GPU, "Invalid GPU address for shader 0x{:016x}", shader_addr);
        return nullptr;
    }
    if (const ShaderInfo* const shader = TryGet(*cpu_shader_addr)) {
        return shader;
    }
    ComputeEnvironment env{*kepler_compute, *gpu_memory, program_base, qmd.program_start};
    return MakeShaderInfo(env, *cpu_shader_addr);
}

void ShaderCache::GetGraphicsEnvironments(GraphicsEnvironments& result,
                                          const std::array<u64, NUM_PROGRAMS>& unique_hashes) {
    size_t env_index{};
    const GPUVAddr base_addr{maxwell3d->regs.program_region.Address()};
    for (size_t index = 0; index < NUM_PROGRAMS; ++index) {
        if (unique_hashes[index] == 0) {
            continue;
        }
        const auto program{static_cast<Tegra::Engines::Maxwell3D::Regs::ShaderType>(index)};
        auto& env{result.envs[index]};
        const u32 start_address{maxwell3d->regs.pipelines[index].offset};
        env = GraphicsEnvironment{*maxwell3d, *gpu_memory, program, base_addr, start_address};
        env.SetCachedSize(shader_infos[index]->size_bytes);
        result.env_ptrs[env_index++] = &env;
    }
}

ShaderInfo* ShaderCache::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;
}

void ShaderCache::Register(std::unique_ptr<ShaderInfo> data, VAddr addr, 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 + YUZU_PAGESIZE - 1) >> YUZU_PAGEBITS;
    for (u64 page = addr >> YUZU_PAGEBITS; page < page_end; ++page) {
        invalidation_cache[page].push_back(entry);
    }

    storage.push_back(std::move(data));

    rasterizer.UpdatePagesCachedCount(addr, size, true);
}

void ShaderCache::InvalidatePagesInRegion(VAddr addr, size_t size) {
    const VAddr addr_end = addr + size;
    const u64 page_end = (addr_end + YUZU_PAGESIZE - 1) >> YUZU_PAGEBITS;
    for (u64 page = addr >> YUZU_PAGEBITS; page < page_end; ++page) {
        auto it = invalidation_cache.find(page);
        if (it == invalidation_cache.end()) {
            continue;
        }
        InvalidatePageEntries(it->second, addr, addr_end);
    }
}

void ShaderCache::RemovePendingShaders() {
    if (marked_for_removal.empty()) {
        return;
    }
    // Remove duplicates
    std::ranges::sort(marked_for_removal);
    marked_for_removal.erase(std::unique(marked_for_removal.begin(), marked_for_removal.end()),
                             marked_for_removal.end());

    boost::container::small_vector<ShaderInfo*, 16> removed_shaders;

    std::scoped_lock lock{lookup_mutex};
    for (Entry* const entry : marked_for_removal) {
        removed_shaders.push_back(entry->data);

        const auto it = lookup_cache.find(entry->addr_start);
        ASSERT(it != lookup_cache.end());
        lookup_cache.erase(it);
    }
    marked_for_removal.clear();

    if (!removed_shaders.empty()) {
        RemoveShadersFromStorage(removed_shaders);
    }
}

void ShaderCache::InvalidatePageEntries(std::vector<Entry*>& entries, VAddr addr, VAddr addr_end) {
    size_t index = 0;
    while (index < entries.size()) {
        Entry* const entry = entries[index];
        if (!entry->Overlaps(addr, addr_end)) {
            ++index;
            continue;
        }

        UnmarkMemory(entry);
        RemoveEntryFromInvalidationCache(entry);
        marked_for_removal.push_back(entry);
    }
}

void ShaderCache::RemoveEntryFromInvalidationCache(const Entry* entry) {
    const u64 page_end = (entry->addr_end + YUZU_PAGESIZE - 1) >> YUZU_PAGEBITS;
    for (u64 page = entry->addr_start >> YUZU_PAGEBITS; page < page_end; ++page) {
        const auto entries_it = invalidation_cache.find(page);
        ASSERT(entries_it != invalidation_cache.end());
        std::vector<Entry*>& entries = entries_it->second;

        const auto entry_it = std::ranges::find(entries, entry);
        ASSERT(entry_it != entries.end());
        entries.erase(entry_it);
    }
}

void ShaderCache::UnmarkMemory(Entry* entry) {
    if (!entry->is_memory_marked) {
        return;
    }
    entry->is_memory_marked = false;

    const VAddr addr = entry->addr_start;
    const size_t size = entry->addr_end - addr;
    rasterizer.UpdatePagesCachedCount(addr, size, false);
}

void ShaderCache::RemoveShadersFromStorage(std::span<ShaderInfo*> removed_shaders) {
    // Remove them from the cache
    std::erase_if(storage, [&removed_shaders](const std::unique_ptr<ShaderInfo>& shader) {
        return std::ranges::find(removed_shaders, shader.get()) != removed_shaders.end();
    });
}

ShaderCache::Entry* ShaderCache::NewEntry(VAddr addr, VAddr addr_end, ShaderInfo* 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;
}

const ShaderInfo* ShaderCache::MakeShaderInfo(GenericEnvironment& env, VAddr cpu_addr) {
    auto info = std::make_unique<ShaderInfo>();
    if (const std::optional<u64> cached_hash{env.Analyze()}) {
        info->unique_hash = *cached_hash;
        info->size_bytes = env.CachedSizeBytes();
    } else {
        // Slow path, not really hit on commercial games
        // Build a control flow graph to get the real shader size
        Shader::ObjectPool<Shader::Maxwell::Flow::Block> flow_block;
        Shader::Maxwell::Flow::CFG cfg{env, flow_block, env.StartAddress()};
        info->unique_hash = env.CalculateHash();
        info->size_bytes = env.ReadSizeBytes();
    }
    const size_t size_bytes{info->size_bytes};
    const ShaderInfo* const result{info.get()};
    Register(std::move(info), cpu_addr, size_bytes);
    return result;
}

} // namespace VideoCommon