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
|
#include "graphics/opengl/gropenglquery.h"
#include "graphics/opengl/gropengl.h"
namespace {
struct query_object_slot {
bool used = false;
GLuint name = 0;
};
SCP_vector<query_object_slot> query_objects;
int get_new_query_slot() {
auto end = query_objects.end();
for (auto iter = query_objects.begin(); iter != end; ++iter) {
if (!iter->used) {
return (int) std::distance(query_objects.begin(), iter);
}
}
query_objects.emplace_back();
return (int) (query_objects.size() - 1);
}
query_object_slot& get_query_slot(int handle) {
Assertion(handle >= 0 && handle < (int)query_objects.size(), "Query object index %d is invalid!", handle);
return query_objects[handle];
}
}
int gr_opengl_create_query_object() {
auto idx = get_new_query_slot();
auto& slot = query_objects[idx];
slot.used = true;
glGenQueries(1, &slot.name);
return idx;
}
void gr_opengl_query_value(int obj, QueryType type) {
auto& slot = get_query_slot(obj);
switch(type) {
case QueryType::Timestamp:
Assertion(GLAD_GL_ARB_timer_query, "Timestamp queries are not available! Availability must be checked before calling this function!");
glQueryCounter(slot.name, GL_TIMESTAMP);
break;
default:
UNREACHABLE("Unhandled enum value!");
break;
}
}
bool gr_opengl_query_value_available(int obj) {
auto& slot = get_query_slot(obj);
GLuint available;
glGetQueryObjectuiv(slot.name, GL_QUERY_RESULT_AVAILABLE, &available);
return available == GL_TRUE;
}
std::uint64_t gr_opengl_get_query_value(int obj) {
auto& slot = get_query_slot(obj);
GLuint64 available;
glGetQueryObjectui64v(slot.name, GL_QUERY_RESULT, &available);
return available;
}
void gr_opengl_delete_query_object(int obj) {
auto& slot = get_query_slot(obj);
glDeleteQueries(1, &slot.name);
slot.name = 0;
slot.used = false;
}
|
