1 /**************************************************************************
2 *
3 * Copyright 2013 Marek Olšák <maraeo@gmail.com>
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /* This file contains code for calculating framerate for displaying on the HUD.
29 */
30
31 #include "hud/hud_private.h"
32 #include "util/os_time.h"
33 #include "util/u_memory.h"
34
35 struct fps_info {
36 boolean frametime;
37 int frames;
38 uint64_t last_time;
39 };
40
41 static void
query_fps(struct hud_graph * gr,struct pipe_context * pipe)42 query_fps(struct hud_graph *gr, struct pipe_context *pipe)
43 {
44 struct fps_info *info = gr->query_data;
45 uint64_t now = os_time_get();
46
47 info->frames++;
48
49 if (info->last_time) {
50 if (info->frametime) {
51 double frametime = ((double)now - (double)info->last_time) / 1000.0;
52 hud_graph_add_value(gr, frametime);
53 info->last_time = now;
54 }
55 else if (info->last_time + gr->pane->period <= now) {
56 double fps = ((uint64_t)info->frames) * 1000000 /
57 (double)(now - info->last_time);
58 info->frames = 0;
59 info->last_time = now;
60
61 hud_graph_add_value(gr, fps);
62 }
63 }
64 else {
65 info->last_time = now;
66 }
67 }
68
69 static void
free_query_data(void * p,struct pipe_context * pipe)70 free_query_data(void *p, struct pipe_context *pipe)
71 {
72 FREE(p);
73 }
74
75 void
hud_fps_graph_install(struct hud_pane * pane)76 hud_fps_graph_install(struct hud_pane *pane)
77 {
78 struct hud_graph *gr = CALLOC_STRUCT(hud_graph);
79
80 if (!gr)
81 return;
82
83 strcpy(gr->name, "fps");
84 gr->query_data = CALLOC_STRUCT(fps_info);
85 if (!gr->query_data) {
86 FREE(gr);
87 return;
88 }
89 struct fps_info *info = gr->query_data;
90 info->frametime = false;
91
92 gr->query_new_value = query_fps;
93
94 /* Don't use free() as our callback as that messes up Gallium's
95 * memory debugger. Use simple free_query_data() wrapper.
96 */
97 gr->free_query_data = free_query_data;
98
99 hud_pane_add_graph(pane, gr);
100 }
101
102 void
hud_frametime_graph_install(struct hud_pane * pane)103 hud_frametime_graph_install(struct hud_pane *pane)
104 {
105 struct hud_graph *gr = CALLOC_STRUCT(hud_graph);
106
107 if (!gr)
108 return;
109
110 strcpy(gr->name, "frametime (ms)");
111 gr->query_data = CALLOC_STRUCT(fps_info);
112 if (!gr->query_data) {
113 FREE(gr);
114 return;
115 }
116 struct fps_info *info = gr->query_data;
117 info->frametime = true;
118
119 gr->query_new_value = query_fps;
120
121 gr->free_query_data = free_query_data;
122
123 hud_pane_add_graph(pane, gr);
124 }
125