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
169
170
171
172
173
174
175
|
#include "config.h"
#include "gskglprofilerprivate.h"
#include <epoxy/gl.h>
#define N_QUERIES 4
struct _GskGLProfiler
{
GObject parent_instance;
GdkGLContext *gl_context;
/* Creating GL queries is kind of expensive, so we pay the
* price upfront and create a circular buffer of queries
*/
GLuint gl_queries[N_QUERIES];
GLuint active_query;
gboolean has_timer : 1;
gboolean first_frame : 1;
};
enum {
PROP_GL_CONTEXT = 1,
N_PROPERTIES
};
static GParamSpec *gsk_gl_profiler_properties[N_PROPERTIES];
G_DEFINE_TYPE (GskGLProfiler, gsk_gl_profiler, G_TYPE_OBJECT)
static void
gsk_gl_profiler_finalize (GObject *gobject)
{
GskGLProfiler *self = GSK_GL_PROFILER (gobject);
glDeleteQueries (N_QUERIES, self->gl_queries);
g_clear_object (&self->gl_context);
G_OBJECT_CLASS (gsk_gl_profiler_parent_class)->finalize (gobject);
}
static void
gsk_gl_profiler_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GskGLProfiler *self = GSK_GL_PROFILER (gobject);
switch (prop_id)
{
case PROP_GL_CONTEXT:
self->gl_context = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
}
static void
gsk_gl_profiler_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GskGLProfiler *self = GSK_GL_PROFILER (gobject);
switch (prop_id)
{
case PROP_GL_CONTEXT:
g_value_set_object (value, self->gl_context);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
}
}
static void
gsk_gl_profiler_class_init (GskGLProfilerClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = gsk_gl_profiler_set_property;
gobject_class->get_property = gsk_gl_profiler_get_property;
gobject_class->finalize = gsk_gl_profiler_finalize;
gsk_gl_profiler_properties[PROP_GL_CONTEXT] =
g_param_spec_object ("gl-context",
"GL Context",
"The GdkGLContext used by the GL profiler",
GDK_TYPE_GL_CONTEXT,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, N_PROPERTIES, gsk_gl_profiler_properties);
}
static void
gsk_gl_profiler_init (GskGLProfiler *self)
{
glGenQueries (N_QUERIES, self->gl_queries);
self->first_frame = TRUE;
self->has_timer = epoxy_has_gl_extension ("GL_ARB_timer_query");
}
GskGLProfiler *
gsk_gl_profiler_new (GdkGLContext *context)
{
g_return_val_if_fail (GDK_IS_GL_CONTEXT (context), NULL);
return g_object_new (GSK_TYPE_GL_PROFILER, "gl-context", context, NULL);
}
void
gsk_gl_profiler_begin_gpu_region (GskGLProfiler *profiler)
{
GLuint query_id;
g_return_if_fail (GSK_IS_GL_PROFILER (profiler));
if (!profiler->has_timer)
return;
query_id = profiler->gl_queries[profiler->active_query];
glBeginQuery (GL_TIME_ELAPSED, query_id);
}
guint64
gsk_gl_profiler_end_gpu_region (GskGLProfiler *profiler)
{
GLuint last_query_id;
GLint res;
GLuint64 elapsed;
g_return_val_if_fail (GSK_IS_GL_PROFILER (profiler), 0);
if (!profiler->has_timer)
return 0;
glEndQuery (GL_TIME_ELAPSED);
if (profiler->active_query == 0)
last_query_id = N_QUERIES - 1;
else
last_query_id = profiler->active_query - 1;
/* Advance iterator */
profiler->active_query += 1;
if (profiler->active_query == N_QUERIES)
profiler->active_query = 0;
/* If this is the first frame we already have a result */
if (profiler->first_frame)
{
profiler->first_frame = FALSE;
return 0;
}
glGetQueryObjectiv (profiler->gl_queries[last_query_id], GL_QUERY_RESULT_AVAILABLE, &res);
if (res == 1)
glGetQueryObjectui64v (profiler->gl_queries[last_query_id], GL_QUERY_RESULT, &elapsed);
else
elapsed = 0;
return elapsed;
}
|
