yuzu/src/core/hle/service/vi/vi.cpp

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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
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#include <algorithm>
#include "common/alignment.h"
#include "common/scope_exit.h"
#include "core/core_timing.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/service/nvdrv/devices/nvdisp_disp0.h"
#include "core/hle/service/nvdrv/nvdrv.h"
#include "core/hle/service/vi/vi.h"
#include "core/hle/service/vi/vi_m.h"
#include "video_core/renderer_base.h"
#include "video_core/video_core.h"
namespace Service {
namespace VI {
constexpr size_t SCREEN_REFRESH_RATE = 60;
constexpr u64 frame_ticks = static_cast<u64>(BASE_CLOCK_RATE / SCREEN_REFRESH_RATE);
class Parcel {
public:
// This default size was chosen arbitrarily.
static constexpr size_t DefaultBufferSize = 0x40;
Parcel() : buffer(DefaultBufferSize) {}
explicit Parcel(std::vector<u8> data) : buffer(std::move(data)) {}
virtual ~Parcel() = default;
template <typename T>
T Read() {
T val;
std::memcpy(&val, buffer.data() + read_index, sizeof(T));
read_index += sizeof(T);
read_index = Common::AlignUp(read_index, 4);
return val;
}
template <typename T>
T ReadUnaligned() {
T val;
std::memcpy(&val, buffer.data() + read_index, sizeof(T));
read_index += sizeof(T);
return val;
}
std::vector<u8> ReadBlock(size_t length) {
std::vector<u8> data(length);
std::memcpy(data.data(), buffer.data() + read_index, length);
read_index += length;
read_index = Common::AlignUp(read_index, 4);
return data;
}
std::u16string ReadInterfaceToken() {
u32 unknown = Read<u32_le>();
u32 length = Read<u32_le>();
std::u16string token{};
for (u32 ch = 0; ch < length + 1; ++ch) {
token.push_back(ReadUnaligned<u16_le>());
}
read_index = Common::AlignUp(read_index, 4);
return token;
}
template <typename T>
void Write(const T& val) {
if (buffer.size() < write_index + sizeof(T))
buffer.resize(buffer.size() + sizeof(T) + DefaultBufferSize);
std::memcpy(buffer.data() + write_index, &val, sizeof(T));
write_index += sizeof(T);
write_index = Common::AlignUp(write_index, 4);
}
void Deserialize() {
Header header{};
std::memcpy(&header, buffer.data(), sizeof(Header));
read_index = header.data_offset;
DeserializeData();
}
std::vector<u8> Serialize() {
ASSERT(read_index == 0);
write_index = sizeof(Header);
SerializeData();
Header header{};
header.data_offset = sizeof(Header);
header.data_size = write_index - sizeof(Header);
std::memcpy(buffer.data(), &header, sizeof(Header));
return buffer;
}
protected:
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virtual void SerializeData() {}
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virtual void DeserializeData() {}
private:
struct Header {
u32_le data_size;
u32_le data_offset;
u32_le objects_size;
u32_le objects_offset;
};
static_assert(sizeof(Header) == 16, "ParcelHeader has wrong size");
std::vector<u8> buffer;
size_t read_index = 0;
size_t write_index = 0;
};
class NativeWindow : public Parcel {
public:
explicit NativeWindow(u32 id) : Parcel() {
data.id = id;
}
~NativeWindow() override = default;
protected:
void SerializeData() override {
Write(data);
}
private:
struct Data {
u32_le magic = 2;
u32_le process_id;
u32_le id;
INSERT_PADDING_BYTES(0xC);
std::array<u8, 8> dspdrv = {'d', 's', 'p', 'd', 'r', 'v'};
INSERT_PADDING_BYTES(8);
};
static_assert(sizeof(Data) == 0x28, "ParcelData has wrong size");
Data data{};
};
class IGBPConnectRequestParcel : public Parcel {
public:
explicit IGBPConnectRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
Deserialize();
}
~IGBPConnectRequestParcel() override = default;
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void DeserializeData() override {
std::u16string token = ReadInterfaceToken();
data = Read<Data>();
}
struct Data {
u32_le unk;
u32_le api;
u32_le producer_controlled_by_app;
};
Data data;
};
class IGBPConnectResponseParcel : public Parcel {
public:
explicit IGBPConnectResponseParcel(u32 width, u32 height) : Parcel() {
data.width = width;
data.height = height;
}
~IGBPConnectResponseParcel() override = default;
protected:
void SerializeData() override {
Write(data);
}
private:
struct Data {
u32_le width;
u32_le height;
u32_le transform_hint;
u32_le num_pending_buffers;
u32_le status;
};
static_assert(sizeof(Data) == 20, "ParcelData has wrong size");
Data data{};
};
class IGBPSetPreallocatedBufferRequestParcel : public Parcel {
public:
explicit IGBPSetPreallocatedBufferRequestParcel(const std::vector<u8>& buffer)
: Parcel(buffer) {
Deserialize();
}
~IGBPSetPreallocatedBufferRequestParcel() override = default;
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void DeserializeData() override {
std::u16string token = ReadInterfaceToken();
data = Read<Data>();
ASSERT(data.graphic_buffer_length == sizeof(IGBPBuffer));
buffer = Read<IGBPBuffer>();
}
struct Data {
u32_le slot;
INSERT_PADDING_WORDS(1);
u32_le graphic_buffer_length;
INSERT_PADDING_WORDS(1);
};
Data data;
IGBPBuffer buffer;
};
class IGBPSetPreallocatedBufferResponseParcel : public Parcel {
public:
IGBPSetPreallocatedBufferResponseParcel() : Parcel() {}
~IGBPSetPreallocatedBufferResponseParcel() override = default;
protected:
void SerializeData() override {
// TODO(Subv): Find out what this means
Write<u32>(0);
}
};
class IGBPDequeueBufferRequestParcel : public Parcel {
public:
explicit IGBPDequeueBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
Deserialize();
}
~IGBPDequeueBufferRequestParcel() override = default;
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void DeserializeData() override {
std::u16string token = ReadInterfaceToken();
data = Read<Data>();
}
struct Data {
u32_le pixel_format;
u32_le width;
u32_le height;
u32_le get_frame_timestamps;
u32_le usage;
};
Data data;
};
class IGBPDequeueBufferResponseParcel : public Parcel {
public:
explicit IGBPDequeueBufferResponseParcel(u32 slot) : Parcel(), slot(slot) {}
~IGBPDequeueBufferResponseParcel() override = default;
protected:
void SerializeData() override {
Write(slot);
// TODO(Subv): Find out how this Fence is used.
std::array<u32_le, 11> fence = {};
Write(fence);
Write<u32_le>(0);
}
u32_le slot;
};
class IGBPRequestBufferRequestParcel : public Parcel {
public:
explicit IGBPRequestBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
Deserialize();
}
~IGBPRequestBufferRequestParcel() override = default;
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void DeserializeData() override {
std::u16string token = ReadInterfaceToken();
slot = Read<u32_le>();
}
u32_le slot;
};
class IGBPRequestBufferResponseParcel : public Parcel {
public:
explicit IGBPRequestBufferResponseParcel(IGBPBuffer buffer) : Parcel(), buffer(buffer) {}
~IGBPRequestBufferResponseParcel() override = default;
protected:
void SerializeData() override {
// TODO(Subv): Find out what this all means
Write<u32_le>(1);
Write<u32_le>(sizeof(IGBPBuffer));
Write<u32_le>(0); // Unknown
Write(buffer);
Write<u32_le>(0);
}
IGBPBuffer buffer;
};
class IGBPQueueBufferRequestParcel : public Parcel {
public:
explicit IGBPQueueBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
Deserialize();
}
~IGBPQueueBufferRequestParcel() override = default;
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void DeserializeData() override {
std::u16string token = ReadInterfaceToken();
data = Read<Data>();
}
struct Data {
u32_le slot;
INSERT_PADDING_WORDS(2);
u32_le timestamp;
INSERT_PADDING_WORDS(20);
};
static_assert(sizeof(Data) == 96, "ParcelData has wrong size");
Data data;
};
class IGBPQueueBufferResponseParcel : public Parcel {
public:
explicit IGBPQueueBufferResponseParcel(u32 width, u32 height) : Parcel() {
data.width = width;
data.height = height;
}
~IGBPQueueBufferResponseParcel() override = default;
protected:
void SerializeData() override {
Write(data);
}
private:
struct Data {
u32_le width;
u32_le height;
u32_le transform_hint;
u32_le num_pending_buffers;
u32_le status;
};
static_assert(sizeof(Data) == 20, "ParcelData has wrong size");
Data data{};
};
class IHOSBinderDriver final : public ServiceFramework<IHOSBinderDriver> {
public:
explicit IHOSBinderDriver(std::shared_ptr<NVFlinger> nv_flinger)
: ServiceFramework("IHOSBinderDriver"), nv_flinger(std::move(nv_flinger)) {
static const FunctionInfo functions[] = {
{0, &IHOSBinderDriver::TransactParcel, "TransactParcel"},
{1, &IHOSBinderDriver::AdjustRefcount, "AdjustRefcount"},
{2, &IHOSBinderDriver::GetNativeHandle, "GetNativeHandle"},
{3, nullptr, "TransactParcelAuto"},
};
RegisterHandlers(functions);
}
~IHOSBinderDriver() = default;
private:
enum class TransactionId {
RequestBuffer = 1,
SetBufferCount = 2,
DequeueBuffer = 3,
DetachBuffer = 4,
DetachNextBuffer = 5,
AttachBuffer = 6,
QueueBuffer = 7,
CancelBuffer = 8,
Query = 9,
Connect = 10,
Disconnect = 11,
AllocateBuffers = 13,
SetPreallocatedBuffer = 14
};
void TransactParcel(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
u32 id = rp.Pop<u32>();
auto transaction = static_cast<TransactionId>(rp.Pop<u32>());
u32 flags = rp.Pop<u32>();
auto& input_buffer = ctx.BufferDescriptorA()[0];
std::vector<u8> input_data(input_buffer.Size());
Memory::ReadBlock(input_buffer.Address(), input_data.data(), input_buffer.Size());
auto& output_buffer = ctx.BufferDescriptorB()[0];
auto buffer_queue = nv_flinger->GetBufferQueue(id);
if (transaction == TransactionId::Connect) {
IGBPConnectRequestParcel request{input_data};
IGBPConnectResponseParcel response{1280, 720};
auto response_buffer = response.Serialize();
Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
output_buffer.Size());
} else if (transaction == TransactionId::SetPreallocatedBuffer) {
IGBPSetPreallocatedBufferRequestParcel request{input_data};
buffer_queue->SetPreallocatedBuffer(request.data.slot, request.buffer);
IGBPSetPreallocatedBufferResponseParcel response{};
auto response_buffer = response.Serialize();
Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
output_buffer.Size());
} else if (transaction == TransactionId::DequeueBuffer) {
IGBPDequeueBufferRequestParcel request{input_data};
u32 slot = buffer_queue->DequeueBuffer(request.data.pixel_format, request.data.width,
request.data.height);
IGBPDequeueBufferResponseParcel response{slot};
auto response_buffer = response.Serialize();
Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
output_buffer.Size());
} else if (transaction == TransactionId::RequestBuffer) {
IGBPRequestBufferRequestParcel request{input_data};
auto& buffer = buffer_queue->RequestBuffer(request.slot);
IGBPRequestBufferResponseParcel response{buffer};
auto response_buffer = response.Serialize();
Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
output_buffer.Size());
} else if (transaction == TransactionId::QueueBuffer) {
IGBPQueueBufferRequestParcel request{input_data};
buffer_queue->QueueBuffer(request.data.slot);
IGBPQueueBufferResponseParcel response{1280, 720};
auto response_buffer = response.Serialize();
Memory::WriteBlock(output_buffer.Address(), response_buffer.data(),
output_buffer.Size());
} else {
ASSERT_MSG(false, "Unimplemented");
}
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void AdjustRefcount(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
u32 id = rp.Pop<u32>();
s32 addval = rp.PopRaw<s32>();
u32 type = rp.Pop<u32>();
LOG_WARNING(Service, "(STUBBED) called id=%u, addval=%08X, type=%08X", id, addval, type);
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void GetNativeHandle(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
u32 id = rp.Pop<u32>();
u32 unknown = rp.Pop<u32>();
auto buffer_queue = nv_flinger->GetBufferQueue(id);
// TODO(Subv): Find out what this actually is.
LOG_WARNING(Service, "(STUBBED) called id=%u, unknown=%08X", id, unknown);
IPC::RequestBuilder rb{ctx, 2, 1};
rb.Push(RESULT_SUCCESS);
rb.PushCopyObjects(buffer_queue->GetNativeHandle());
}
std::shared_ptr<NVFlinger> nv_flinger;
};
class ISystemDisplayService final : public ServiceFramework<ISystemDisplayService> {
public:
ISystemDisplayService() : ServiceFramework("ISystemDisplayService") {
static const FunctionInfo functions[] = {
{1200, nullptr, "GetZOrderCountMin"},
{2205, &ISystemDisplayService::SetLayerZ, "SetLayerZ"},
};
RegisterHandlers(functions);
}
~ISystemDisplayService() = default;
private:
void SetLayerZ(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u64 layer_id = rp.Pop<u64>();
u64 z_value = rp.Pop<u64>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
}
};
class IManagerDisplayService final : public ServiceFramework<IManagerDisplayService> {
public:
explicit IManagerDisplayService(std::shared_ptr<NVFlinger> nv_flinger)
: ServiceFramework("IManagerDisplayService"), nv_flinger(std::move(nv_flinger)) {
static const FunctionInfo functions[] = {
{1020, &IManagerDisplayService::CloseDisplay, "CloseDisplay"},
{1102, nullptr, "GetDisplayResolution"},
{2010, &IManagerDisplayService::CreateManagedLayer, "CreateManagedLayer"},
{6000, &IManagerDisplayService::AddToLayerStack, "AddToLayerStack"},
};
RegisterHandlers(functions);
}
~IManagerDisplayService() = default;
private:
void CloseDisplay(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u64 display = rp.Pop<u64>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
}
void CreateManagedLayer(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u32 unknown = rp.Pop<u32>();
rp.Skip(1, false);
u64 display = rp.Pop<u64>();
u64 aruid = rp.Pop<u64>();
u64 layer_id = nv_flinger->CreateLayer(display);
IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
rb.Push(layer_id);
}
void AddToLayerStack(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u32 stack = rp.Pop<u32>();
u64 layer_id = rp.Pop<u64>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
}
std::shared_ptr<NVFlinger> nv_flinger;
};
void IApplicationDisplayService::GetRelayService(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IHOSBinderDriver>(nv_flinger);
}
void IApplicationDisplayService::GetSystemDisplayService(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<ISystemDisplayService>();
}
void IApplicationDisplayService::GetManagerDisplayService(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IManagerDisplayService>(nv_flinger);
}
void IApplicationDisplayService::GetIndirectDisplayTransactionService(
Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IHOSBinderDriver>(nv_flinger);
}
void IApplicationDisplayService::OpenDisplay(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
auto name_buf = rp.PopRaw<std::array<u8, 0x40>>();
auto end = std::find(name_buf.begin(), name_buf.end(), '\0');
std::string name(name_buf.begin(), end);
ASSERT_MSG(name == "Default", "Non-default displays aren't supported yet");
IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
rb.Push<u64>(nv_flinger->OpenDisplay(name));
}
void IApplicationDisplayService::CloseDisplay(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u64 display_id = rp.Pop<u64>();
IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
}
void IApplicationDisplayService::OpenLayer(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
auto name_buf = rp.PopRaw<std::array<u8, 0x40>>();
auto end = std::find(name_buf.begin(), name_buf.end(), '\0');
std::string display_name(name_buf.begin(), end);
u64 layer_id = rp.Pop<u64>();
u64 aruid = rp.Pop<u64>();
auto& buffer = ctx.BufferDescriptorB()[0];
u64 display_id = nv_flinger->OpenDisplay(display_name);
u32 buffer_queue_id = nv_flinger->GetBufferQueueId(display_id, layer_id);
NativeWindow native_window{buffer_queue_id};
auto data = native_window.Serialize();
Memory::WriteBlock(buffer.Address(), data.data(), data.size());
IPC::RequestBuilder rb = rp.MakeBuilder(4, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
rb.Push<u64>(data.size());
}
void IApplicationDisplayService::CreateStrayLayer(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u32 flags = rp.Pop<u32>();
u64 display_id = rp.Pop<u64>();
auto& buffer = ctx.BufferDescriptorB()[0];
// TODO(Subv): What's the difference between a Stray and a Managed layer?
u64 layer_id = nv_flinger->CreateLayer(display_id);
u32 buffer_queue_id = nv_flinger->GetBufferQueueId(display_id, layer_id);
NativeWindow native_window{buffer_queue_id};
auto data = native_window.Serialize();
Memory::WriteBlock(buffer.Address(), data.data(), data.size());
IPC::RequestBuilder rb = rp.MakeBuilder(6, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
rb.Push(layer_id);
rb.Push<u64>(data.size());
}
void IApplicationDisplayService::DestroyStrayLayer(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u64 layer_id = rp.Pop<u64>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
}
void IApplicationDisplayService::SetLayerScalingMode(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u32 scaling_mode = rp.Pop<u32>();
u64 unknown = rp.Pop<u64>();
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0, 0, 0);
rb.Push(RESULT_SUCCESS);
}
void IApplicationDisplayService::GetDisplayVsyncEvent(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service, "(STUBBED) called");
IPC::RequestParser rp{ctx};
u64 display_id = rp.Pop<u64>();
auto vsync_event = nv_flinger->GetVsyncEvent(display_id);
IPC::RequestBuilder rb = rp.MakeBuilder(2, 1, 0, 0);
rb.Push(RESULT_SUCCESS);
rb.PushCopyObjects(vsync_event);
}
IApplicationDisplayService::IApplicationDisplayService(std::shared_ptr<NVFlinger> nv_flinger)
: ServiceFramework("IApplicationDisplayService"), nv_flinger(std::move(nv_flinger)) {
static const FunctionInfo functions[] = {
{100, &IApplicationDisplayService::GetRelayService, "GetRelayService"},
{101, &IApplicationDisplayService::GetSystemDisplayService, "GetSystemDisplayService"},
{102, &IApplicationDisplayService::GetManagerDisplayService, "GetManagerDisplayService"},
{103, &IApplicationDisplayService::GetIndirectDisplayTransactionService,
"GetIndirectDisplayTransactionService"},
{1000, nullptr, "ListDisplays"},
{1010, &IApplicationDisplayService::OpenDisplay, "OpenDisplay"},
{1020, &IApplicationDisplayService::CloseDisplay, "CloseDisplay"},
{2101, &IApplicationDisplayService::SetLayerScalingMode, "SetLayerScalingMode"},
{2020, &IApplicationDisplayService::OpenLayer, "OpenLayer"},
{2030, &IApplicationDisplayService::CreateStrayLayer, "CreateStrayLayer"},
{2031, &IApplicationDisplayService::DestroyStrayLayer, "DestroyStrayLayer"},
{5202, &IApplicationDisplayService::GetDisplayVsyncEvent, "GetDisplayVsyncEvent"},
};
RegisterHandlers(functions);
}
void InstallInterfaces(SM::ServiceManager& service_manager) {
std::make_shared<VI_M>()->InstallAsService(service_manager);
}
NVFlinger::NVFlinger() {
// Add the different displays to the list of displays.
Display default_{0, "Default"};
Display external{1, "External"};
Display edid{2, "Edid"};
Display internal{3, "Internal"};
displays.emplace_back(default_);
displays.emplace_back(external);
displays.emplace_back(edid);
displays.emplace_back(internal);
// Schedule the screen composition events
composition_event =
CoreTiming::RegisterEvent("ScreenCompositioin", [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);
}
u64 NVFlinger::OpenDisplay(const std::string& name) {
LOG_WARNING(Service, "Opening display %s", name.c_str());
// 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();
if (buffer == boost::none) {
// There was no queued buffer to draw, render previous frame
VideoCore::g_renderer->SwapBuffers({});
continue;
}
auto& igbp_buffer = buffer->igbp_buffer;
// Now send the buffer to the GPU for drawing.
auto nvdrv = Nvidia::nvdrv.lock();
ASSERT(nvdrv);
// 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_queue->ReleaseBuffer(buffer->slot);
}
}
BufferQueue::BufferQueue(u32 id, u64 layer_id) : id(id), layer_id(layer_id) {
native_handle = Kernel::Event::Create(Kernel::ResetType::OneShot, "BufferQueue NativeHandle");
}
void BufferQueue::SetPreallocatedBuffer(u32 slot, IGBPBuffer& igbp_buffer) {
Buffer buffer{};
buffer.slot = slot;
buffer.igbp_buffer = igbp_buffer;
buffer.status = Buffer::Status::Free;
LOG_WARNING(Service, "Adding graphics buffer %u", slot);
queue.emplace_back(buffer);
}
u32 BufferQueue::DequeueBuffer(u32 pixel_format, u32 width, u32 height) {
auto itr = std::find_if(queue.begin(), queue.end(), [&](const Buffer& buffer) {
// Only consider free buffers. Buffers become free once again after they've been Acquired
// and Released by the compositor, see the NVFlinger::Compose method.
if (buffer.status != Buffer::Status::Free)
return false;
// Make sure that the parameters match.
auto& igbp_buffer = buffer.igbp_buffer;
return igbp_buffer.format == pixel_format && igbp_buffer.width == width &&
igbp_buffer.height == height;
});
ASSERT(itr != queue.end());
itr->status = Buffer::Status::Dequeued;
return itr->slot;
}
const IGBPBuffer& BufferQueue::RequestBuffer(u32 slot) const {
auto itr = std::find_if(queue.begin(), queue.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Dequeued);
return itr->igbp_buffer;
}
void BufferQueue::QueueBuffer(u32 slot) {
auto itr = std::find_if(queue.begin(), queue.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Dequeued);
itr->status = Buffer::Status::Queued;
}
boost::optional<const BufferQueue::Buffer&> BufferQueue::AcquireBuffer() {
auto itr = std::find_if(queue.begin(), queue.end(), [](const Buffer& buffer) {
return buffer.status == Buffer::Status::Queued;
});
if (itr == queue.end())
return boost::none;
itr->status = Buffer::Status::Acquired;
return *itr;
}
void BufferQueue::ReleaseBuffer(u32 slot) {
auto itr = std::find_if(queue.begin(), queue.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Acquired);
itr->status = Buffer::Status::Free;
}
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)) {
vsync_event = Kernel::Event::Create(Kernel::ResetType::Pulse, "Display VSync Event");
}
} // namespace VI
} // namespace Service