summaryrefslogtreecommitdiffstats
path: root/src/core/hle/service/nvflinger/nvflinger.cpp
blob: 3996c24feab2aa94d7bc3cfd9ab4b6c93a42b9b9 (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
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <algorithm>
#include <boost/optional.hpp>

#include "common/alignment.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/hle/service/nvdrv/devices/nvdisp_disp0.h"
#include "core/hle/service/nvdrv/nvdrv.h"
#include "core/hle/service/nvflinger/buffer_queue.h"
#include "core/hle/service/nvflinger/nvflinger.h"
#include "video_core/renderer_base.h"
#include "video_core/video_core.h"

namespace Service::NVFlinger {

constexpr size_t SCREEN_REFRESH_RATE = 60;
constexpr u64 frame_ticks = static_cast<u64>(CoreTiming::BASE_CLOCK_RATE / SCREEN_REFRESH_RATE);

NVFlinger::NVFlinger() {
    // Add the different displays to the list of displays.
    displays.emplace_back(0, "Default");
    displays.emplace_back(1, "External");
    displays.emplace_back(2, "Edid");
    displays.emplace_back(3, "Internal");

    // Schedule the screen composition events
    composition_event =
        CoreTiming::RegisterEvent("ScreenComposition", [this](u64 userdata, int cycles_late) {
            Compose();
            CoreTiming::ScheduleEvent(frame_ticks - cycles_late, composition_event);
        });

    CoreTiming::ScheduleEvent(frame_ticks, composition_event);
}

NVFlinger::~NVFlinger() {
    CoreTiming::UnscheduleEvent(composition_event, 0);
}

void NVFlinger::SetNVDrvInstance(std::shared_ptr<Nvidia::Module> instance) {
    nvdrv = std::move(instance);
}

u64 NVFlinger::OpenDisplay(std::string_view name) {
    LOG_WARNING(Service, "Opening display {}", name);

    // TODO(Subv): Currently we only support the Default display.
    ASSERT(name == "Default");

    auto itr = std::find_if(displays.begin(), displays.end(),
                            [&](const Display& display) { return display.name == name; });

    ASSERT(itr != displays.end());

    return itr->id;
}

u64 NVFlinger::CreateLayer(u64 display_id) {
    auto& display = GetDisplay(display_id);

    ASSERT_MSG(display.layers.empty(), "Only one layer is supported per display at the moment");

    u64 layer_id = next_layer_id++;
    u32 buffer_queue_id = next_buffer_queue_id++;
    auto buffer_queue = std::make_shared<BufferQueue>(buffer_queue_id, layer_id);
    display.layers.emplace_back(layer_id, buffer_queue);
    buffer_queues.emplace_back(std::move(buffer_queue));
    return layer_id;
}

u32 NVFlinger::GetBufferQueueId(u64 display_id, u64 layer_id) {
    const auto& layer = GetLayer(display_id, layer_id);
    return layer.buffer_queue->GetId();
}

Kernel::SharedPtr<Kernel::Event> NVFlinger::GetVsyncEvent(u64 display_id) {
    const auto& display = GetDisplay(display_id);
    return display.vsync_event;
}

std::shared_ptr<BufferQueue> NVFlinger::GetBufferQueue(u32 id) const {
    auto itr = std::find_if(buffer_queues.begin(), buffer_queues.end(),
                            [&](const auto& queue) { return queue->GetId() == id; });

    ASSERT(itr != buffer_queues.end());
    return *itr;
}

Display& NVFlinger::GetDisplay(u64 display_id) {
    auto itr = std::find_if(displays.begin(), displays.end(),
                            [&](const Display& display) { return display.id == display_id; });

    ASSERT(itr != displays.end());
    return *itr;
}

Layer& NVFlinger::GetLayer(u64 display_id, u64 layer_id) {
    auto& display = GetDisplay(display_id);

    auto itr = std::find_if(display.layers.begin(), display.layers.end(),
                            [&](const Layer& layer) { return layer.id == layer_id; });

    ASSERT(itr != display.layers.end());
    return *itr;
}

void NVFlinger::Compose() {
    for (auto& display : displays) {
        // Trigger vsync for this display at the end of drawing
        SCOPE_EXIT({ display.vsync_event->Signal(); });

        // Don't do anything for displays without layers.
        if (display.layers.empty())
            continue;

        // TODO(Subv): Support more than 1 layer.
        ASSERT_MSG(display.layers.size() == 1, "Max 1 layer per display is supported");

        Layer& layer = display.layers[0];
        auto& buffer_queue = layer.buffer_queue;

        // Search for a queued buffer and acquire it
        auto buffer = buffer_queue->AcquireBuffer();

        MicroProfileFlip();

        if (buffer == boost::none) {
            auto& system_instance = Core::System::GetInstance();

            // There was no queued buffer to draw, render previous frame
            system_instance.perf_stats.EndGameFrame();
            system_instance.Renderer().SwapBuffers({});
            continue;
        }

        auto& igbp_buffer = buffer->igbp_buffer;

        // Now send the buffer to the GPU for drawing.
        // TODO(Subv): Support more than just disp0. The display device selection is probably based
        // on which display we're drawing (Default, Internal, External, etc)
        auto nvdisp = nvdrv->GetDevice<Nvidia::Devices::nvdisp_disp0>("/dev/nvdisp_disp0");
        ASSERT(nvdisp);

        nvdisp->flip(igbp_buffer.gpu_buffer_id, igbp_buffer.offset, igbp_buffer.format,
                     igbp_buffer.width, igbp_buffer.height, igbp_buffer.stride, buffer->transform,
                     buffer->crop_rect);

        buffer_queue->ReleaseBuffer(buffer->slot);
    }
}

Layer::Layer(u64 id, std::shared_ptr<BufferQueue> queue) : id(id), buffer_queue(std::move(queue)) {}

Display::Display(u64 id, std::string name) : id(id), name(std::move(name)) {
    auto& kernel = Core::System::GetInstance().Kernel();
    vsync_event = Kernel::Event::Create(kernel, Kernel::ResetType::Pulse, "Display VSync Event");
}

} // namespace Service::NVFlinger