/**************************************************************************
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*
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* Copyright 2013 Marek Olšák <maraeo@gmail.com>
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/* This file contains code for calculating framerate for displaying on the HUD.
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*/
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#include "hud/hud_private.h"
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#include "util/os_time.h"
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#include "util/u_memory.h"
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struct fps_info {
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int frames;
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uint64_t last_time;
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};
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static void
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query_fps(struct hud_graph *gr, struct pipe_context *pipe)
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{
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struct fps_info *info = gr->query_data;
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uint64_t now = os_time_get();
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info->frames++;
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if (info->last_time) {
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if (info->last_time + gr->pane->period <= now) {
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double fps = ((uint64_t)info->frames) * 1000000 /
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(double)(now - info->last_time);
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info->frames = 0;
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info->last_time = now;
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hud_graph_add_value(gr, fps);
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}
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}
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else {
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info->last_time = now;
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}
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}
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static void
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free_query_data(void *p, struct pipe_context *pipe)
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{
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FREE(p);
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}
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void
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hud_fps_graph_install(struct hud_pane *pane)
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{
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struct hud_graph *gr = CALLOC_STRUCT(hud_graph);
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if (!gr)
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return;
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strcpy(gr->name, "fps");
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gr->query_data = CALLOC_STRUCT(fps_info);
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if (!gr->query_data) {
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FREE(gr);
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return;
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}
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gr->query_new_value = query_fps;
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/* Don't use free() as our callback as that messes up Gallium's
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* memory debugger. Use simple free_query_data() wrapper.
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*/
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gr->free_query_data = free_query_data;
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hud_pane_add_graph(pane, gr);
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}
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