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
|
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/kernel/k_writable_event.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/service/nvflinger/buffer_queue.h"
namespace Service::NVFlinger {
BufferQueue::BufferQueue(Kernel::KernelCore& kernel, u32 id, u64 layer_id)
: id(id), layer_id(layer_id), buffer_wait_event{kernel} {
Kernel::KAutoObject::Create(std::addressof(buffer_wait_event));
buffer_wait_event.Initialize("BufferQueue:WaitEvent");
}
BufferQueue::~BufferQueue() = default;
void BufferQueue::SetPreallocatedBuffer(u32 slot, const IGBPBuffer& igbp_buffer) {
ASSERT(slot < buffer_slots);
LOG_WARNING(Service, "Adding graphics buffer {}", slot);
{
std::unique_lock lock{free_buffers_mutex};
free_buffers.push_back(slot);
}
free_buffers_condition.notify_one();
buffers[slot] = {
.slot = slot,
.status = Buffer::Status::Free,
.igbp_buffer = igbp_buffer,
.transform = {},
.crop_rect = {},
.swap_interval = 0,
.multi_fence = {},
};
buffer_wait_event.GetWritableEvent()->Signal();
}
std::optional<std::pair<u32, Service::Nvidia::MultiFence*>> BufferQueue::DequeueBuffer(u32 width,
u32 height) {
// Wait for first request before trying to dequeue
{
std::unique_lock lock{free_buffers_mutex};
free_buffers_condition.wait(lock, [this] { return !free_buffers.empty() || !is_connect; });
}
if (!is_connect) {
// Buffer was disconnected while the thread was blocked, this is most likely due to
// emulation being stopped
return std::nullopt;
}
std::unique_lock lock{free_buffers_mutex};
auto f_itr = free_buffers.begin();
auto slot = buffers.size();
while (f_itr != free_buffers.end()) {
const Buffer& buffer = buffers[*f_itr];
if (buffer.status == Buffer::Status::Free && buffer.igbp_buffer.width == width &&
buffer.igbp_buffer.height == height) {
slot = *f_itr;
free_buffers.erase(f_itr);
break;
}
++f_itr;
}
if (slot == buffers.size()) {
return std::nullopt;
}
buffers[slot].status = Buffer::Status::Dequeued;
return {{buffers[slot].slot, &buffers[slot].multi_fence}};
}
const IGBPBuffer& BufferQueue::RequestBuffer(u32 slot) const {
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status == Buffer::Status::Dequeued);
ASSERT(buffers[slot].slot == slot);
return buffers[slot].igbp_buffer;
}
void BufferQueue::QueueBuffer(u32 slot, BufferTransformFlags transform,
const Common::Rectangle<int>& crop_rect, u32 swap_interval,
Service::Nvidia::MultiFence& multi_fence) {
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status == Buffer::Status::Dequeued);
ASSERT(buffers[slot].slot == slot);
buffers[slot].status = Buffer::Status::Queued;
buffers[slot].transform = transform;
buffers[slot].crop_rect = crop_rect;
buffers[slot].swap_interval = swap_interval;
buffers[slot].multi_fence = multi_fence;
std::unique_lock lock{queue_sequence_mutex};
queue_sequence.push_back(slot);
}
void BufferQueue::CancelBuffer(u32 slot, const Service::Nvidia::MultiFence& multi_fence) {
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status != Buffer::Status::Free);
ASSERT(buffers[slot].slot == slot);
buffers[slot].status = Buffer::Status::Free;
buffers[slot].multi_fence = multi_fence;
buffers[slot].swap_interval = 0;
{
std::unique_lock lock{free_buffers_mutex};
free_buffers.push_back(slot);
}
free_buffers_condition.notify_one();
buffer_wait_event.GetWritableEvent()->Signal();
}
std::optional<std::reference_wrapper<const BufferQueue::Buffer>> BufferQueue::AcquireBuffer() {
std::unique_lock lock{queue_sequence_mutex};
std::size_t buffer_slot = buffers.size();
// Iterate to find a queued buffer matching the requested slot.
while (buffer_slot == buffers.size() && !queue_sequence.empty()) {
const auto slot = static_cast<std::size_t>(queue_sequence.front());
ASSERT(slot < buffers.size());
if (buffers[slot].status == Buffer::Status::Queued) {
ASSERT(buffers[slot].slot == slot);
buffer_slot = slot;
}
queue_sequence.pop_front();
}
if (buffer_slot == buffers.size()) {
return std::nullopt;
}
buffers[buffer_slot].status = Buffer::Status::Acquired;
return {{buffers[buffer_slot]}};
}
void BufferQueue::ReleaseBuffer(u32 slot) {
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status == Buffer::Status::Acquired);
ASSERT(buffers[slot].slot == slot);
buffers[slot].status = Buffer::Status::Free;
{
std::unique_lock lock{free_buffers_mutex};
free_buffers.push_back(slot);
}
free_buffers_condition.notify_one();
buffer_wait_event.GetWritableEvent()->Signal();
}
void BufferQueue::Connect() {
std::unique_lock lock{queue_sequence_mutex};
queue_sequence.clear();
is_connect = true;
}
void BufferQueue::Disconnect() {
buffers.fill({});
{
std::unique_lock lock{queue_sequence_mutex};
queue_sequence.clear();
}
buffer_wait_event.GetWritableEvent()->Signal();
is_connect = false;
free_buffers_condition.notify_one();
}
u32 BufferQueue::Query(QueryType type) {
LOG_WARNING(Service, "(STUBBED) called type={}", type);
switch (type) {
case QueryType::NativeWindowFormat:
return static_cast<u32>(PixelFormat::RGBA8888);
case QueryType::NativeWindowWidth:
case QueryType::NativeWindowHeight:
break;
}
UNIMPLEMENTED_MSG("Unimplemented query type={}", type);
return 0;
}
std::shared_ptr<Kernel::KWritableEvent> BufferQueue::GetWritableBufferWaitEvent() const {
return buffer_wait_event.GetWritableEvent();
}
std::shared_ptr<Kernel::KReadableEvent> BufferQueue::GetBufferWaitEvent() const {
return buffer_wait_event.GetReadableEvent();
}
} // namespace Service::NVFlinger
|
