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boinc/api/graphics2_unix.cpp

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2019 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// unix-specific graphics stuff
//
#include "config.h"
#include <cstdlib>
#include <cstdio>
#include <csetjmp>
#include <unistd.h>
#include <pthread.h>
#include <csignal>
#include <cstring>
#include "x_opengl.h"
#include "app_ipc.h"
#include "filesys.h"
#include "str_replace.h"
#include "util.h"
#include "boinc_gl.h"
#include "boinc_glut.h"
#include "boinc_api.h"
#include "graphics2.h"
#include "diagnostics.h"
#define TIMER_INTERVAL_MSEC 30
static int xpos = 100, ypos = 100, width = 600, height = 400;
static int clicked_button;
static int win=0;
static int checkparentcounter=0;
#ifdef __APPLE__
static bool need_show = false;
// Set to true to draw both directly to window and also to offscreen buffer
bool debugSharedOffscreenBuffer = false;
#endif
bool fullscreen;
void boinc_close_window_and_quit(const char* p) {
char buf[256];
fprintf(stderr, "%s Quitting: %s\n", boinc_msg_prefix(buf, sizeof(buf)), p);
exit(0);
}
void boinc_close_window_and_quit_aux() {
boinc_close_window_and_quit("GLUT close");
}
// This callback is invoked when a user presses a key.
//
void keyboardD(unsigned char key, int /*x*/, int /*y*/) {
if (fullscreen) {
boinc_close_window_and_quit("key down");
} else {
boinc_app_key_press((int) key, 0);
}
}
void keyboardU(unsigned char key, int /*x*/, int /*y*/) {
if (fullscreen) {
boinc_close_window_and_quit("key up");
} else {
boinc_app_key_release((int) key, 0);
}
}
void mouse_click(int button, int state, int x, int y){
clicked_button = button;
if (fullscreen) {
boinc_close_window_and_quit("mouse click");
} else {
if (state) {
boinc_app_mouse_button(x, y, button, false);
} else {
boinc_app_mouse_button(x, y, button, true);
}
}
}
void mouse_click_move(int x, int y){
if (fullscreen) {
boinc_close_window_and_quit("mouse move");
} else if (clicked_button == 2){
boinc_app_mouse_move(x, y, false, false, true);
} else if (clicked_button == 1){
boinc_app_mouse_move(x, y, false, true, false);
} else if (clicked_button == 0){
boinc_app_mouse_move(x, y, true, false, false);
} else{
boinc_app_mouse_move(x, y, false, false, false);
}
}
static void maybe_render() {
int new_xpos, new_ypos, new_width, new_height;
static int size_changed = 0;
new_xpos = glutGet(GLUT_WINDOW_X);
new_ypos = glutGet(GLUT_WINDOW_Y);
new_width = glutGet(GLUT_WINDOW_WIDTH);
new_height = glutGet(GLUT_WINDOW_HEIGHT);
if (throttled_app_render(new_width, new_height, dtime())) {
#ifdef __APPLE__
if (UseSharedOffscreenBuffer() && !debugSharedOffscreenBuffer) {
return; // Don't waste cycles drawing to hidden window on screen
}
#endif
glutSwapBuffers();
if (! fullscreen) {
// If user has changed window size, wait until it stops
// changing and then write the new dimensions to file
if ((new_xpos != xpos) || (new_ypos != ypos) ||
(new_width != width) || (new_height != height)
) {
size_changed = 1;
xpos = new_xpos;
ypos = new_ypos;
width = new_width;
height = new_height;
} else {
if (size_changed && (++size_changed > 10)) {
size_changed = 0;
FILE *f = boinc_fopen("gfx_info", "w");
if (f) {
// ToDo: change this to XML
fprintf(f, "%d %d %d %d\n", xpos, ypos, width, height);
fclose(f);
}
}
} // End if (new size != previous size) else
} // End if (! fullscreen)
#ifdef __APPLE__
MacGLUTFix(fullscreen);
if (need_show) {
glutShowWindow();
need_show = false;
}
#endif
}
}
static void make_window(const char* title) {
char window_title[256];
if (title) {
strlcpy(window_title, title, sizeof(window_title));
} else {
get_window_title(window_title, 256);
}
win = glutCreateWindow(window_title);
glutReshapeFunc(app_graphics_resize);
glutKeyboardFunc(keyboardD);
glutKeyboardUpFunc(keyboardU);
glutMouseFunc(mouse_click);
glutMotionFunc(mouse_click_move);
glutDisplayFunc(maybe_render);
glEnable(GL_DEPTH_TEST);
app_graphics_init();
#ifdef __APPLE__
glutWMCloseFunc(boinc_close_window_and_quit_aux); // Enable the window's close box
BringAppToFront();
// Show window only after a successful call to throttled_app_render();
// this avoids momentary display of old image when screensaver restarts
// which made image appear to "jump."
need_show = true;
#endif
if (fullscreen) {
glutFullScreen();
}
}
static void boinc_glut_init(int *argc, char** argv) {
win = 0;
FILE *f = boinc_fopen("gfx_info", "r");
if (f) {
// ToDo: change this to XML parsing
int n = fscanf(f, "%d %d %d %d\n", &xpos, &ypos, &width, &height);
fclose(f);
if (n != 4) {
fprintf(stderr, "failed to parse gfx_info");
}
}
glutInit (argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH | GLUT_ALPHA);
glutInitWindowPosition(xpos, ypos);
glutInitWindowSize(width, height);
}
static void timer_handler(int) {
maybe_render();
// When running under a V5 client, the worker app launches the graphics app
// so this code kills the graphics when the worker application exits.
// Under a V6 client, the Manager or Screensaver launched the graphics app
// so this code kills the graphics when the Manager or Screensaver exits.
if (--checkparentcounter < 0) {
// Check approximately twice per second if parent process still running
checkparentcounter = 500 / TIMER_INTERVAL_MSEC;
if (getppid() == 1) {
// Quit graphics application if parent process no longer running
boinc_close_window_and_quit("parent dead");
}
}
glutTimerFunc(TIMER_INTERVAL_MSEC, timer_handler, 0);
}
void boinc_graphics_loop(int argc, char** argv, const char* title) {
if (!diagnostics_is_initialized()) {
boinc_init_graphics_diagnostics(BOINC_DIAG_DEFAULTS);
}
#ifdef __APPLE__
char dir [MAXPATHLEN];
getcwd(dir, MAXPATHLEN);
#endif
for (int i=1; i<argc; i++) {
if (!strcmp(argv[i], "--fullscreen")) {
fullscreen = true;
}
}
boinc_glut_init(&argc, argv);
make_window(title);
glutTimerFunc(TIMER_INTERVAL_MSEC, timer_handler, 0);
#ifdef __APPLE__
// Apparently glut changed our working directory in OS 10.3.9
chdir(dir);
#endif
glutMainLoop();
}
#ifdef __APPLE__
bool UseSharedOffscreenBuffer() {
static bool alreadyTested = false;
static bool needSharedGfxBuffer = false;
//return true; // FOR TESTING ONLY
if (alreadyTested) {
return needSharedGfxBuffer;
}
alreadyTested = true;
if (fullscreen) {
SInt32 major = -1;
SInt32 minor = -1;
char vers[100], *p1 = NULL;
FILE *f;
vers[0] = '\0';
f = popen("sw_vers -productVersion", "r");
if (f) {
fscanf(f, "%s", vers);
pclose(f);
}
if (vers[0] == '\0') {
fprintf(stderr, "popen(\"sw_vers -productVersion\" failed\n");
fflush(stderr);
return false;
}
// Extract the major system version number
major = atoi(vers);
if (major > 10) { // OS 11.0 or later
needSharedGfxBuffer = true;
return true;
}
// Extract the minor system version number
p1 = strchr(vers, '.');
minor = atoi(p1+1);
if (minor > 12) { // OS 10.13 or later
needSharedGfxBuffer = true;
return true;
}
}
return false;
}
#endif
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