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
|
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/microprofile.h"
#include "core/frontend/scope_acquire_window_context.h"
#include "core/settings.h"
#include "video_core/dma_pusher.h"
#include "video_core/gpu.h"
#include "video_core/gpu_thread.h"
#include "video_core/renderer_base.h"
namespace VideoCommon::GPUThread {
/// Executes a single GPU thread command
static void ExecuteCommand(CommandData* command, VideoCore::RendererBase& renderer,
Tegra::DmaPusher& dma_pusher) {
if (const auto submit_list = std::get_if<SubmitListCommand>(command)) {
dma_pusher.Push(std::move(submit_list->entries));
dma_pusher.DispatchCalls();
} else if (const auto data = std::get_if<SwapBuffersCommand>(command)) {
renderer.SwapBuffers(data->framebuffer);
} else if (const auto data = std::get_if<FlushRegionCommand>(command)) {
renderer.Rasterizer().FlushRegion(data->addr, data->size);
} else if (const auto data = std::get_if<InvalidateRegionCommand>(command)) {
renderer.Rasterizer().InvalidateRegion(data->addr, data->size);
} else if (const auto data = std::get_if<FlushAndInvalidateRegionCommand>(command)) {
renderer.Rasterizer().FlushAndInvalidateRegion(data->addr, data->size);
} else {
UNREACHABLE();
}
}
/// Runs the GPU thread
static void RunThread(VideoCore::RendererBase& renderer, Tegra::DmaPusher& dma_pusher,
SynchState& state) {
MicroProfileOnThreadCreate("GpuThread");
auto WaitForWakeup = [&]() {
std::unique_lock<std::mutex> lock{state.signal_mutex};
state.signal_condition.wait(lock, [&] { return !state.is_idle || !state.is_running; });
};
// Wait for first GPU command before acquiring the window context
WaitForWakeup();
// If emulation was stopped during disk shader loading, abort before trying to acquire context
if (!state.is_running) {
return;
}
Core::Frontend::ScopeAcquireWindowContext acquire_context{renderer.GetRenderWindow()};
while (state.is_running) {
if (!state.is_running) {
return;
}
{
// Thread has been woken up, so make the previous write queue the next read queue
std::lock_guard<std::mutex> lock{state.signal_mutex};
std::swap(state.push_queue, state.pop_queue);
}
// Execute all of the GPU commands
while (!state.pop_queue->empty()) {
ExecuteCommand(&state.pop_queue->front(), renderer, dma_pusher);
state.pop_queue->pop();
}
state.UpdateIdleState();
// Signal that the GPU thread has finished processing commands
if (state.is_idle) {
state.idle_condition.notify_one();
}
// Wait for CPU thread to send more GPU commands
WaitForWakeup();
}
}
ThreadManager::ThreadManager(VideoCore::RendererBase& renderer, Tegra::DmaPusher& dma_pusher)
: renderer{renderer}, dma_pusher{dma_pusher}, thread{RunThread, std::ref(renderer),
std::ref(dma_pusher), std::ref(state)},
thread_id{thread.get_id()} {}
ThreadManager::~ThreadManager() {
{
// Notify GPU thread that a shutdown is pending
std::lock_guard<std::mutex> lock{state.signal_mutex};
state.is_running = false;
}
state.signal_condition.notify_one();
thread.join();
}
void ThreadManager::SubmitList(Tegra::CommandList&& entries) {
if (entries.empty()) {
return;
}
PushCommand(SubmitListCommand(std::move(entries)), false, false);
}
void ThreadManager::SwapBuffers(
std::optional<std::reference_wrapper<const Tegra::FramebufferConfig>> framebuffer) {
PushCommand(SwapBuffersCommand(std::move(framebuffer)), true, false);
}
void ThreadManager::FlushRegion(VAddr addr, u64 size) {
// Block the CPU when using accurate emulation
PushCommand(FlushRegionCommand(addr, size), Settings::values.use_accurate_gpu_emulation, false);
}
void ThreadManager::InvalidateRegion(VAddr addr, u64 size) {
PushCommand(InvalidateRegionCommand(addr, size), true, true);
}
void ThreadManager::FlushAndInvalidateRegion(VAddr addr, u64 size) {
InvalidateRegion(addr, size);
}
void ThreadManager::PushCommand(CommandData&& command_data, bool wait_for_idle, bool allow_on_cpu) {
{
std::lock_guard<std::mutex> lock{state.signal_mutex};
if ((allow_on_cpu && state.is_idle) || IsGpuThread()) {
// Execute the command synchronously on the current thread
ExecuteCommand(&command_data, renderer, dma_pusher);
return;
}
// Push the command to the GPU thread
state.UpdateIdleState();
state.push_queue->emplace(command_data);
}
// Signal the GPU thread that commands are pending
state.signal_condition.notify_one();
if (wait_for_idle) {
// Wait for the GPU to be idle (all commands to be executed)
std::unique_lock<std::mutex> lock{state.idle_mutex};
state.idle_condition.wait(lock, [this] { return static_cast<bool>(state.is_idle); });
}
}
} // namespace VideoCommon::GPUThread
|
