xdemos: add OML sync test

Add program to test glXSwapBuffersMscOML behavior.  Based on glsync.c.

progs/xdemos/.gitignore

@@ -27,3 +27,4 @@ xfont
 xrotfontdemo
 yuvrect_client
 msctest
+omlsync

progs/xdemos/Makefile

@@ -32,6 +32,7 @@ PROGS = \
 	msctest \
 	multictx \
 	offset \
+	omlsync \
 	overlay \
 	pbinfo \
 	pbdemo \

progs/xdemos/omlsync.c

@@ -0,0 +1,250 @@
+/*
+ * Copyright © 2007-2010 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Jesse Barnes <jesse.barnes@intel.com>
+ *
+ */
+
+/** @file omlsync.c
+ * The program is simple:  it paints a window alternating colors (red &
+ * white) either as fast as possible or synchronized to vblank events
+ *
+ * If run normally, the program should display a window that exhibits
+ * significant tearing between red and white colors (e.g. you might get
+ * a "waterfall" effect of red and white horizontal bars).
+ *
+ * If run with the '-s b' option, the program should synchronize the
+ * window color changes with the vertical blank period, resulting in a
+ * window that looks orangish with a high frequency flicker (which may
+ * be invisible).  If the window is moved to another screen, this
+ * property should be preserved.  If the window spans two screens, it
+ * shouldn't tear on whichever screen most of the window is on; the
+ * portion on the other screen may show some tearing (like the
+ * waterfall effect above).
+ *
+ * Other options include '-w <width>' and '-h <height>' to set the
+ * window size.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+#include <GL/glx.h>
+#include <GL/glxext.h>
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+Bool (*glXGetSyncValuesOML)(Display *dpy, GLXDrawable drawable,
+			    int64_t *ust, int64_t *msc, int64_t *sbc);
+Bool (*glXGetMscRateOML)(Display *dpy, GLXDrawable drawable, int32_t *numerator,
+			 int32_t *denominator);
+int64_t (*glXSwapBuffersMscOML)(Display *dpy, GLXDrawable drawable,
+				int64_t target_msc, int64_t divisor,
+				int64_t remainder);
+Bool (*glXWaitForMscOML)(Display *dpy, GLXDrawable drawable, int64_t target_msc,
+			 int64_t divisor, int64_t remainder, int64_t *ust,
+			 int64_t *msc, int64_t *sbc);
+Bool (*glXWaitForSbcOML)(Display *dpy, GLXDrawable drawable, int64_t target_sbc,
+			 int64_t *ust, int64_t *msc, int64_t *sbc);
+
+static int GLXExtensionSupported(Display *dpy, const char *extension)
+{
+	const char *extensionsString, *client_extensions, *pos;
+
+	extensionsString = glXQueryExtensionsString(dpy, DefaultScreen(dpy));
+	client_extensions = glXGetClientString(dpy, GLX_EXTENSIONS);
+
+	pos = strstr(extensionsString, extension);
+
+	if (pos != NULL && (pos == extensionsString || pos[-1] == ' ') &&
+	    (pos[strlen(extension)] == ' ' || pos[strlen(extension)] == '\0'))
+		return 1;
+
+	pos = strstr(client_extensions, extension);
+
+	if (pos != NULL && (pos == extensionsString || pos[-1] == ' ') &&
+	    (pos[strlen(extension)] == ' ' || pos[strlen(extension)] == '\0'))
+		return 1;
+
+	return 0;
+}
+
+extern char *optarg;
+extern int optind, opterr, optopt;
+static char optstr[] = "w:h:vd:r:n:";
+
+static void usage(char *name)
+{
+	printf("usage: %s [-w <width>] [-h <height>] [-i<swap interval>] "
+	       "[-n<wait interval>] [-v]\n", name);
+	printf("\t-i<swap interval> - swap at most once every n frames\n");
+	printf("\t-n<wait interval> - wait n frames between swaps\n");
+	printf("\t-v: verbose (print count)\n");
+	exit(-1);
+}
+
+int main(int argc, char *argv[])
+{
+	Display *disp;
+	XVisualInfo *pvi;
+	XSetWindowAttributes swa;
+	Window winGL;
+	GLXContext context;
+	int dummy;
+	Atom wmDelete;
+	int width = 500, height = 500, verbose = 0, divisor = 0, remainder = 0,
+	   wait_interval = 0;
+	int c, i = 1;
+	int ret;
+	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) {
+		switch (c) {
+		case 'w':
+			width = atoi(optarg);
+			break;
+		case 'h':
+			height = atoi(optarg);
+			break;
+		case 'v':
+			verbose = 1;
+			break;
+		case 'd':
+			divisor = atoi(optarg);
+			break;
+		case 'r':
+			remainder = atoi(optarg);
+			break;
+		case 'n':
+			wait_interval = atoi(optarg);
+			break;
+		default:
+			usage(argv[0]);
+			break;
+		}
+	}
+
+	disp = XOpenDisplay(NULL);
+	if (!disp) {
+		fprintf(stderr, "failed to open display\n");
+		return -1;
+	}
+
+	if (!glXQueryExtension(disp, &dummy, &dummy)) {
+		fprintf(stderr, "glXQueryExtension failed\n");
+		return -1;
+	}
+
+	if (!GLXExtensionSupported(disp, "GLX_OML_sync_control")) {
+		fprintf(stderr, "GLX_OML_sync_control not supported\n");
+		return -1;
+	}
+
+	pvi = glXChooseVisual(disp, DefaultScreen(disp), db_attribs);
+
+	if (!pvi) {
+		fprintf(stderr, "failed to choose visual, exiting\n");
+		return -1;
+	}
+
+	pvi->screen = DefaultScreen(disp);
+
+	swa.colormap = XCreateColormap(disp, RootWindow(disp, pvi->screen),
+				       pvi->visual, AllocNone);
+	swa.border_pixel = 0;
+	swa.event_mask = ExposureMask | KeyPressMask | ButtonPressMask |
+		StructureNotifyMask;
+	winGL = XCreateWindow(disp, RootWindow(disp, pvi->screen),
+			      0, 0,
+			      width, height,
+			      0, pvi->depth, InputOutput, pvi->visual,
+			      CWBorderPixel | CWColormap | CWEventMask, &swa);
+	if (!winGL) {
+		fprintf(stderr, "window creation failed\n");
+		return -1;
+	}
+        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, &sizehints);
+
+	context = glXCreateContext(disp, pvi, NULL, GL_TRUE);
+	if (!context) {
+		fprintf(stderr, "failed to create glx context\n");
+		return -1;
+	}
+
+	XMapWindow(disp, winGL);
+	ret = glXMakeCurrent(disp, winGL, context);
+	if (!ret) {
+		fprintf(stderr, "failed to make context current: %d\n", ret);
+	}
+
+	glXGetSyncValuesOML = (void *)glXGetProcAddress((unsigned char *)"glXGetSyncValuesOML");
+	glXGetMscRateOML = (void *)glXGetProcAddress((unsigned char *)"glXGetMscRateOML");
+	glXSwapBuffersMscOML = (void *)glXGetProcAddress((unsigned char *)"glXSwapBuffersMscOML");
+	glXWaitForMscOML = (void *)glXGetProcAddress((unsigned char *)"glXWaitForMscOML");
+	glXWaitForSbcOML = (void *)glXGetProcAddress((unsigned char *)"glXWaitForSbcOML");
+
+	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);
+
+		glXSwapBuffersMscOML(disp, winGL, 0, divisor, remainder);
+	}
+
+	XDestroyWindow(disp, winGL);
+	glXDestroyContext(disp, context);
+	XCloseDisplay(disp);
+
+	return 0;
+}