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
35struct fps_info {
36   boolean frametime;
37   int frames;
38   uint64_t last_time;
39};
40
41static void
42query_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
69static void
70free_query_data(void *p, struct pipe_context *pipe)
71{
72   FREE(p);
73}
74
75void
76hud_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
102void
103hud_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