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examples/cogl-x11-tfp: Add a --gears option to run glxgears

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If --gears is passed on the command line, glxgears is run, and
is used for the source window rather than drawing solid rectangles
into a window we create outselves.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>
This commit is contained in:
Owen W. Taylor 2014-04-27 00:14:12 -04:00
parent 4d8771a8c2
commit 7f3960e94d
1 changed files with 152 additions and 27 deletions
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179
examples/cogl-x11-tfp.c
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@ -3,9 +3,14 @@
#include <cogl/winsys/cogl-texture-pixmap-x11.h>
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xcomposite.h>
@ -19,6 +24,84 @@
#define TFP_XWIN_WIDTH 200
#define TFP_XWIN_HEIGHT 200
static pid_t gears_pid = 0;
static void
spawn_gears (void)
{
pid_t pid = fork();
if (pid == 0)
execlp ("glxgears", "glxgears",
NULL);
gears_pid = pid;
}
static XID
find_gears_toplevel (Display *xdpy,
Window window)
{
Atom window_state = XInternAtom (xdpy, "WM_STATE", False);
Atom type;
int format;
unsigned long n_items;
unsigned long bytes_after;
unsigned char *data;
CoglBool result = FALSE;
if (window == None)
window = DefaultRootWindow (xdpy);
XGetWindowProperty (xdpy, window, window_state,
0, G_MAXLONG, False, window_state,
&type, &format, &n_items, &bytes_after, &data);
if (type == window_state)
{
XFree (data);
XGetWindowProperty (xdpy, window, XA_WM_NAME,
0, G_MAXLONG, False, XA_STRING,
&type, &format, &n_items, &bytes_after, &data);
if (type == XA_STRING)
{
if (format == 8 && strcmp ((char *)data, "glxgears") == 0)
result = window;
XFree (data);
}
}
else
{
Window root, parent;
Window *children;
unsigned int n_children;
unsigned int i;
XQueryTree (xdpy, window,
&root, &parent, &children, &n_children);
for (i = 0; i < n_children; i++)
{
result = find_gears_toplevel (xdpy, children[i]);
if (result != None)
break;
}
XFree (children);
}
return result;
}
static void
kill_gears (void)
{
kill (gears_pid, SIGTERM);
}
static void
update_cogl_x11_event_mask (CoglOnscreen *onscreen,
uint32_t event_mask,
@ -59,10 +142,24 @@ main (int argc, char **argv)
Atom atom_wm_protocols;
Atom atom_wm_delete_window;
int screen;
Window tfp_xwin;
CoglBool gears = FALSE;
Window tfp_xwin = None;
Pixmap pixmap;
CoglTexturePixmapX11 *tfp;
GC gc;
CoglTexture *right_texture;
GC gc = None;
int i;
for (i = 1; i < argc; i++)
{
if (strcmp (argv[i], "--gears") == 0)
gears = TRUE;
else
{
g_printerr ("Usage: cogl-x11-tfp [--gears]\n");
return 1;
}
}
g_print ("NB: Don't use this example as a benchmark since there is "
"no synchonization between X window updates and onscreen "
@ -89,6 +186,19 @@ main (int argc, char **argv)
}
}
if (gears)
{
spawn_gears ();
while (TRUE)
{
tfp_xwin = find_gears_toplevel (xdpy, None);
if (tfp_xwin != None)
break;
g_usleep (10000);
}
}
/* Conceptually choose a GPU... */
renderer = cogl_renderer_new ();
/* FIXME: This should conceptually be part of the configuration of
@ -101,7 +211,7 @@ main (int argc, char **argv)
}
chain = cogl_swap_chain_new ();
cogl_swap_chain_set_has_alpha (chain, TRUE);
cogl_swap_chain_set_has_alpha (chain, FALSE);
/* Conceptually declare upfront the kinds of windows we anticipate
* creating so that when we configure the display pipeline we can avoid
@ -173,27 +283,37 @@ main (int argc, char **argv)
xdpy);
XMapWindow (xdpy, xwin);
XCompositeRedirectSubwindows (xdpy, xwin, CompositeRedirectManual);
cogl_onscreen_show (onscreen);
screen = DefaultScreen (xdpy);
tfp_xwin = XCreateSimpleWindow (xdpy, xwin,
0, 0, TFP_XWIN_WIDTH, TFP_XWIN_HEIGHT,
0,
WhitePixel (xdpy, screen),
WhitePixel (xdpy, screen));
XMapWindow (xdpy, tfp_xwin);
gc = XCreateGC (xdpy, tfp_xwin, 0, NULL);
while (TRUE)
if (gears)
{
XCompositeRedirectWindow (xdpy, tfp_xwin, CompositeRedirectAutomatic);
}
else
{
XEvent xev;
XWindowEvent (xdpy, xwin, StructureNotifyMask, &xev);
XCompositeRedirectSubwindows (xdpy, xwin, CompositeRedirectManual);
if (xev.xany.type == MapNotify)
break;
tfp_xwin = XCreateSimpleWindow (xdpy, xwin,
0, 0, TFP_XWIN_WIDTH, TFP_XWIN_HEIGHT,
0,
WhitePixel (xdpy, screen),
WhitePixel (xdpy, screen));
XMapWindow (xdpy, tfp_xwin);
while (TRUE)
{
XWindowEvent (xdpy, xwin, StructureNotifyMask, &xev);
if (xev.xany.type == MapNotify)
break;
}
gc = XCreateGC (xdpy, tfp_xwin, 0, NULL);
}
pixmap = XCompositeNameWindowPixmap (xdpy, tfp_xwin);
@ -223,25 +343,28 @@ main (int argc, char **argv)
case KeyRelease:
keysym = XLookupKeysym (&event.xkey, 0);
if (keysym == XK_q || keysym == XK_Q || keysym == XK_Escape)
return 0;
goto out;
break;
case ClientMessage:
if (event.xclient.message_type == atom_wm_protocols &&
event.xclient.data.l[0] == atom_wm_delete_window)
return 0;
goto out;
break;
}
cogl_xlib_renderer_handle_event (renderer, &event);
}
pixel =
g_random_int_range (0, 255) << 24 |
g_random_int_range (0, 255) << 16 |
g_random_int_range (0, 255) << 8;
g_random_int_range (0, 255);
XSetForeground (xdpy, gc, pixel);
XFillRectangle (xdpy, tfp_xwin, gc, 0, 0, TFP_XWIN_WIDTH, TFP_XWIN_HEIGHT);
XFlush (xdpy);
if (!gears)
{
pixel =
g_random_int_range (0, 255) << 24 |
g_random_int_range (0, 255) << 16 |
g_random_int_range (0, 255) << 8;
g_random_int_range (0, 255);
XSetForeground (xdpy, gc, pixel);
XFillRectangle (xdpy, tfp_xwin, gc, 0, 0, TFP_XWIN_WIDTH, TFP_XWIN_HEIGHT);
XFlush (xdpy);
}
cogl_framebuffer_clear4f (fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
pipeline = cogl_pipeline_new (ctx);
@ -251,5 +374,7 @@ main (int argc, char **argv)
cogl_onscreen_swap_buffers (onscreen);
}
out:
kill_gears ();
return 0;
}