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Diffstat (limited to 'progs/xdemos/glsync.c')
-rw-r--r--progs/xdemos/glsync.c113
1 files changed, 71 insertions, 42 deletions
diff --git a/progs/xdemos/glsync.c b/progs/xdemos/glsync.c
index da87306cf2..c00ba9e468 100644
--- a/progs/xdemos/glsync.c
+++ b/progs/xdemos/glsync.c
@@ -59,6 +59,7 @@
void (*video_sync_get)();
void (*video_sync)();
+void (*swap_interval)();
static int GLXExtensionSupported(Display *dpy, const char *extension)
{
@@ -84,12 +85,12 @@ static int GLXExtensionSupported(Display *dpy, const char *extension)
extern char *optarg;
extern int optind, opterr, optopt;
-static char optstr[] = "w:h:s:v";
+static char optstr[] = "w:h:s:vi:";
enum sync_type {
none = 0,
sgi_video_sync,
- buffer_swap,
+ buffer_swap
};
static void usage(char *name)
@@ -100,6 +101,7 @@ static void usage(char *name)
printf("\t\tn: none\n");
printf("\t\ts: SGI video sync extension\n");
printf("\t\tb: buffer swap\n");
+ printf("\t-i<swap interval>\n");
printf("\t-v: verbose (print count)\n");
exit(-1);
}
@@ -109,16 +111,28 @@ int main(int argc, char *argv[])
Display *disp;
XVisualInfo *pvi;
XSetWindowAttributes swa;
- int attrib[14];
GLint last_val = -1, count = 0;
Window winGL;
GLXContext context;
int dummy;
Atom wmDelete;
enum sync_type waitforsync = none;
- int width = 500, height = 500, verbose = 0,
- countonly = 0;
+ int width = 500, height = 500, verbose = 0, interval = 1;
int c, i = 1;
+ int ret;
+ int attribs[] = { GLX_RGBA,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ None };
+ int db_attribs[] = { GLX_RGBA,
+ GLX_RED_SIZE, 1,
+ GLX_GREEN_SIZE, 1,
+ GLX_BLUE_SIZE, 1,
+ GLX_DOUBLEBUFFER,
+ GLX_DEPTH_SIZE, 1,
+ None };
+ XSizeHints sizehints;
opterr = 0;
while ((c = getopt(argc, argv, optstr)) != -1) {
@@ -148,6 +162,9 @@ int main(int argc, char *argv[])
case 'v':
verbose = 1;
break;
+ case 'i':
+ interval = atoi(optarg);
+ break;
default:
usage(argv[0]);
break;
@@ -170,34 +187,17 @@ int main(int argc, char *argv[])
return -1;
}
- attrib[0] = GLX_RGBA;
- attrib[1] = 1;
- attrib[2] = GLX_RED_SIZE;
- attrib[3] = 1;
- attrib[4] = GLX_GREEN_SIZE;
- attrib[5] = 1;
- attrib[6] = GLX_BLUE_SIZE;
- attrib[7] = 1;
- if (waitforsync != buffer_swap)
- attrib[8] = None;
- else {
- attrib[8] = GLX_DOUBLEBUFFER;
- attrib[9] = 1;
- attrib[10] = None;
+ if (waitforsync != buffer_swap) {
+ pvi = glXChooseVisual(disp, DefaultScreen(disp), attribs);
+ } else {
+ pvi = glXChooseVisual(disp, DefaultScreen(disp), db_attribs);
}
- pvi = glXChooseVisual(disp, DefaultScreen(disp), attrib);
if (!pvi) {
fprintf(stderr, "failed to choose visual, exiting\n");
return -1;
}
- context = glXCreateContext(disp, pvi, None, GL_TRUE);
- if (!context) {
- fprintf(stderr, "failed to create glx context\n");
- return -1;
- }
-
pvi->screen = DefaultScreen(disp);
swa.colormap = XCreateColormap(disp, RootWindow(disp, pvi->screen),
@@ -217,24 +217,58 @@ int main(int argc, char *argv[])
wmDelete = XInternAtom(disp, "WM_DELETE_WINDOW", True);
XSetWMProtocols(disp, winGL, &wmDelete, 1);
+ sizehints.x = 0;
+ sizehints.y = 0;
+ sizehints.width = width;
+ sizehints.height = height;
+ sizehints.flags = USSize | USPosition;
+
+ XSetNormalHints(disp, winGL, &sizehints);
XSetStandardProperties(disp, winGL, "glsync test", "glsync text",
- None, NULL, 0, NULL);
+ None, NULL, 0, &sizehints);
- XMapRaised(disp, winGL);
+ context = glXCreateContext(disp, pvi, NULL, GL_TRUE);
+ if (!context) {
+ fprintf(stderr, "failed to create glx context\n");
+ return -1;
+ }
- glXMakeCurrent(disp, winGL, context);
+ XMapWindow(disp, winGL);
+ ret = glXMakeCurrent(disp, winGL, context);
+ if (ret) {
+ fprintf(stderr, "failed to make context current: %d\n", ret);
+ }
video_sync_get = glXGetProcAddress((unsigned char *)"glXGetVideoSyncSGI");
video_sync = glXGetProcAddress((unsigned char *)"glXWaitVideoSyncSGI");
- if (!video_sync_get || !video_sync) {
+ swap_interval = glXGetProcAddress((unsigned char *)"glXSwapIntervalSGI");
+
+ if (!video_sync_get || !video_sync || !swap_interval) {
fprintf(stderr, "failed to get sync functions\n");
return -1;
}
+ if (waitforsync == buffer_swap) {
+ swap_interval(interval);
+ fprintf(stderr, "set swap interval to %d\n", interval);
+ }
video_sync_get(&count);
count++;
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
while (i++) {
+ /* Alternate colors to make tearing obvious */
+ if (i & 1) {
+ glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+ glColor3f(1.0f, 1.0f, 1.0f);
+ } else {
+ glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
+ glColor3f(1.0f, 0.0f, 0.0f);
+ }
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glRectf(0, 0, width, height);
+
/* Wait for vsync */
if (waitforsync == sgi_video_sync) {
if (verbose)
@@ -245,24 +279,19 @@ int main(int argc, char *argv[])
if (count == last_val)
fprintf(stderr, "error: count didn't change: %d\n", count);
last_val = count;
+ glFlush();
} else if (waitforsync == buffer_swap) {
glXSwapBuffers(disp, winGL);
+ } else {
+ video_sync_get(&count);
+ sleep(1);
+ glFinish();
}
- if (countonly) {
- video_sync(2, 1, &count);
+ if (verbose) {
+ video_sync_get(&count);
fprintf(stderr, "current count: %d\n", count);
- sleep(1);
- continue;
}
-
- /* Alternate colors to make tearing obvious */
- if (i & 1)
- glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
- else
- glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
- glClear(GL_COLOR_BUFFER_BIT);
- glFlush();
}
XDestroyWindow(disp, winGL);
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-05 15:51:07 +0000