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77 lines1.6 KBC
1/*
2app.c: start-up and the frame.
3*/
4#include <stdlib.h>
5#include "plat.h"
6#include "gfx.h"
7#include "font.h"
8#include "jobs.h"
9#include "ui.h"
10#include "version.h"
11#include "app.h"
12
13static uint32_t *canvas;
14
15int app_start(void)
16{
17 plat_log(APP_NAME " " APP_VERSION " starting");
18 canvas = plat_canvas_next(); // (none when the GPU draws)
19 if (!canvas && !gfx_gpu()) {
20 plat_log("FATAL: no canvas");
21 return 0;
22 }
23 gfx_init(canvas, SCREEN_W, SCREEN_H);
24 if (!gfx_gpu()) gfx_clear(0xff05070d);
25 if (!font_init())
26 plat_log("WARNING: fonts missing from %s/fonts", plat_data_dir());
27 http_init();
28 jobs_init();
29 ui_init();
30 return 1;
31}
32
33static uint64_t t_render, t_frames, t_window;
34
35uint32_t *app_frame(int *drawn)
36{
37 ui_update();
38 *drawn = 0;
39 if (gfx_wants_redraw()) ui_force_redraw(); // (the GPU's list ran out of room last time)
40 if (ui_needs_redraw()) {
41 uint64_t t0 = plat_time_us();
42 canvas = plat_canvas_next(); // the one not being shown (NULL when the GPU draws)
43 gfx_frame_begin();
44 gfx_init(canvas, SCREEN_W, SCREEN_H);
45 ui_render();
46 gfx_frame_end();
47 t_render += plat_time_us() - t0;
48 t_frames++;
49 *drawn = 1;
50 }
51 // how long drawing takes, every 10 s (for the log)
52 uint64_t now = plat_time_us();
53 if (!t_window) t_window = now;
54 if (now - t_window > 10000000) {
55 if (t_frames)
56 plat_log("frames: redrawn %llu times in 10 s (only on changes), %.1f ms to draw each",
57 (unsigned long long)t_frames, t_render / 1000.0 / t_frames);
58 t_render = t_frames = 0;
59 t_window = now;
60 }
61 return canvas;
62}
63
64void app_background(void)
65{
66}
67
68void app_redraw(void)
69{
70 ui_force_redraw();
71}
72
73void app_shutdown(void)
74{
75 ui_shutdown();
76 plat_log("bye");
77}