blob: 6b5f000952e9740f75bb129c65dfd73a909cf1c1 (
plain)
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
|
#ifndef DEVICE_CONTEXT_HH_
#define DEVICE_CONTEXT_HH_
#include <chrono>
#include <memory>
#include <unordered_map>
#include <vulkan/utility/vk_dispatch_table.h>
#include <vulkan/vk_layer.h>
#include <vulkan/vulkan.hpp>
#include <vulkan/vulkan_core.h>
#include "context.hh"
#include "instance_context.hh"
#include "physical_device_context.hh"
namespace low_latency {
class QueueContext;
struct DeviceContext final : public Context {
public:
InstanceContext& instance;
PhysicalDeviceContext& physical_device;
const bool was_antilag_requested;
const VkDevice device;
const VkuDeviceDispatchTable vtable;
// Tiny struct to represent any swapchain's low latency state.
struct SwapchainInfo {
std::chrono::milliseconds present_delay = std::chrono::milliseconds{0};
bool was_low_latency_requested = false;
};
std::unordered_map<VkSwapchainKHR, SwapchainInfo> swapchain_infos{};
std::unordered_map<VkQueue, std::shared_ptr<QueueContext>> queues;
struct Clock {
public:
using time_point_t = std::chrono::time_point<std::chrono::steady_clock,
std::chrono::nanoseconds>;
const DeviceContext& device;
public:
std::uint64_t host_ns;
std::uint64_t error_bound;
std::uint64_t device_ticks;
public:
Clock(const DeviceContext& device);
~Clock();
public:
// WARNING: This *MUST* be used over std::chrono::steady_clock::now if
// you're planning on comparing it to a device's clock. If it isn't, the
// timestamps might from different domains and will be completely
// nonsensical.
static time_point_t now();
public:
void calibrate();
time_point_t ticks_to_time(const std::uint64_t& ticks) const;
};
std::unique_ptr<Clock> clock;
public:
DeviceContext(InstanceContext& parent_instance,
PhysicalDeviceContext& parent_physical,
const VkDevice& device, const bool was_antilag_requested,
VkuDeviceDispatchTable&& vtable);
virtual ~DeviceContext();
public:
void sleep_in_input();
// Updates the settings associated with that swapchain. If none is provided
// all swapchains are set to this value.
void update_swapchain_infos(const std::optional<VkSwapchainKHR> target,
const std::chrono::milliseconds& present_delay,
const bool was_low_latency_requested);
};
}; // namespace low_latency
#endif
|
