blob: 468f146f038c8b8641827a7fd346d9b5aa3f9dbf (
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
|
#ifndef HELPER_HH_
#define HELPER_HH_
#include <vulkan/vk_layer.h>
#include <vulkan/vulkan.h>
#include <cstdint>
namespace low_latency {
// Small templates which allow us to SFINAE find pNext structs.
template <typename T>
static T* find_next(void* const head, const VkStructureType& stype) {
for (auto i = reinterpret_cast<VkBaseOutStructure*>(head)->pNext; i;
i = i->pNext) {
if (i->sType == stype) {
return reinterpret_cast<T*>(i);
}
}
return nullptr;
}
template <typename T>
static const T* find_next(const void* const head,
const VkStructureType& stype) {
for (auto i = reinterpret_cast<const VkBaseInStructure*>(head)->pNext; i;
i = i->pNext) {
if (i->sType == stype) {
return reinterpret_cast<const T*>(i);
}
}
return nullptr;
}
template <typename T>
static const T* find_link(const void* const head,
const VkStructureType& stype) {
for (auto info = find_next<T>(head, stype); info;
info = find_next<T>(info, stype)) {
if (info->function == VK_LAYER_LINK_INFO) {
return reinterpret_cast<const T*>(info);
}
}
return nullptr;
}
template <typename T> std::uint64_t extract_present_id(const T& submit) {
const auto lspi = find_next<VkLatencySubmissionPresentIdNV>(
&submit, VK_STRUCTURE_TYPE_LATENCY_SUBMISSION_PRESENT_ID_NV);
return lspi ? lspi->presentID : 0;
}
} // namespace low_latency
#endif
|
