[deb_xorg-server.git] / hw / dmx / examples / dmxwininfo.c

/*
 * Copyright (c) 2003 by the XFree86 Project, Inc.
 *
 * All Rights Reserved.
 *
 * 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 on 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
 * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
 * 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.
 */

/*
 * Create a window and use the DMX extension to query the window's
 * back-end properties.  Display the info inside the window itself.
 *
 * Brian Paul
 * 23 Jan 2003
 */

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/dmxext.h>

static const char *FontName = "fixed";

static void
EventLoop(Display * dpy, Window win, GC gc)
{
    XEvent ev;

    while (1) {
        XNextEvent(dpy, &ev);
        switch (ev.type) {
        case ReparentNotify:
            break;
        case MapNotify:
            break;
        case ConfigureNotify:
        case Expose:
        {
            int numScreens, count, i;
            DMXWindowAttributes *winInfo;
            int x, y;
            const char *msg = "DMX window info:";

            DMXGetScreenCount(dpy, &numScreens);
            winInfo = (DMXWindowAttributes *)
                malloc(numScreens * sizeof(DMXWindowAttributes));
            assert(winInfo);
            if (!DMXGetWindowAttributes(dpy, win, &count, numScreens, winInfo)) {
                printf("Could not get window information for 0x%08lx\n",
                       (long unsigned) win);
            }
            x = y = 50;
            XClearWindow(dpy, win);
            XDrawString(dpy, win, gc, x, y, msg, strlen(msg));
            y += 20;
            for (i = 0; i < count; i++) {
                char str[500];

                snprintf(str, sizeof(str),
                         "screen %d:  pos: %dx%d+%d+%d  visible: %dx%d+%d+%d",
                         winInfo[i].screen,
                         winInfo[i].pos.width, winInfo[i].pos.height,
                         winInfo[i].pos.x, winInfo[i].pos.y,
                         winInfo[i].vis.width, winInfo[i].vis.height,
                         winInfo[i].vis.x, winInfo[i].vis.y);
                XDrawString(dpy, win, gc, x, y, str, strlen(str));
                y += 20;
            }
            free(winInfo);
        }
            break;
        default:
            printf("Event type 0x%x\n", ev.type);
        }
    }
}

int
main(int argc, char *argv[])
{
    const char *displayName = NULL;
    Display *dpy;
    int event_base, error_base;
    int scr, n;
    long vinfoMask, attrMask;
    XVisualInfo vinfoTemp, *visInfo;
    Visual *vis;
    Window win, root;
    XSetWindowAttributes attr;
    XFontStruct *fontInfo;
    GC gc;

    if (argc > 1) {
        displayName = argv[1];
    }

    dpy = XOpenDisplay(displayName);
    if (!dpy) {
        fprintf(stderr, "Unable to open display %s\n", displayName);
        return -1;
    }

    if (!DMXQueryExtension(dpy, &event_base, &error_base)) {
        fprintf(stderr, "DMX extension not available on this display.\n");
        return -1;
    }

    scr = DefaultScreen(dpy);
    root = RootWindow(dpy, scr);
    vis = DefaultVisual(dpy, scr);

    vinfoMask = VisualIDMask;
    vinfoTemp.visualid = vis->visualid;
    visInfo = XGetVisualInfo(dpy, vinfoMask, &vinfoTemp, &n);
    if (!visInfo || n != 1) {
        fprintf(stderr, "Unable to get visual!\n");
        XCloseDisplay(dpy);
        return -1;
    }

    attr.background_pixel = 0;
    attr.border_pixel = 0;
    attr.colormap = XCreateColormap(dpy, root, visInfo->visual, AllocNone);
    attr.event_mask = StructureNotifyMask | ExposureMask;
    attrMask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;

    win = XCreateWindow(dpy, root, 500, 500, 600, 400,  /* x, y, w, h */
                        0,      /* border_width */
                        visInfo->depth, InputOutput,
                        visInfo->visual, attrMask, &attr);

    if (!win) {
        fprintf(stderr, "Unable to create window!\n");
        XCloseDisplay(dpy);
        return -1;
    }

    fontInfo = XLoadQueryFont(dpy, FontName);
    if (!fontInfo) {
        fprintf(stderr, "Error: font %s not found\n", FontName);
        exit(0);
    }

    gc = XCreateGC(dpy, win, 0, NULL);
    XSetBackground(dpy, gc, BlackPixel(dpy, scr));
    XSetForeground(dpy, gc, WhitePixel(dpy, scr));
    XSetFont(dpy, gc, fontInfo->fid);

    XMapWindow(dpy, win);

    EventLoop(dpy, win, gc);

    XDestroyWindow(dpy, win);
    XCloseDisplay(dpy);
    return 0;
}

#if 00

static void
make_window(char *title, int color_flag)
{
    int x = 10, y = 10, width = 400, height = 300;
    Display *dpy;
    int scr;
    Window root, win;
    Colormap cmap;
    XColor xcolor;
    int attr_flags;
    XVisualInfo *visinfo;
    XSetWindowAttributes attr;
    XTextProperty tp;
    XSizeHints sh;
    XEvent e;
    XMesaContext context;
    XMesaVisual visual;
    XMesaBuffer buffer;

    /*
     * Do the usual X things to make a window.
     */

    dpy = XOpenDisplay(NULL);
    if (!dpy) {
        printf("Couldn't open default display!\n");
        exit(1);
    }

    scr = DefaultScreen(dpy);
    root = RootWindow(dpy, scr);

    /* alloc visinfo struct */
    visinfo = (XVisualInfo *) malloc(sizeof(XVisualInfo));

    /* Get a visual and colormap */
    if (color_flag) {
        /* Open TrueColor window */

/*
      if (!XMatchVisualInfo( dpy, scr, 24, TrueColor, visinfo )) {
	 printf("Couldn't get 24-bit TrueColor visual!\n");
	 exit(1);
      }
*/
        if (!XMatchVisualInfo(dpy, scr, 8, PseudoColor, visinfo)) {
            printf("Couldn't get 8-bit PseudoColor visual!\n");
            exit(1);
        }

        cmap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
        Black = Red = Green = Blue = 0;
    }
    else {
        /* Open color index window */

        if (!XMatchVisualInfo(dpy, scr, 8, PseudoColor, visinfo)) {
            printf("Couldn't get 8-bit PseudoColor visual\n");
            exit(1);
        }

        cmap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);

        /* Allocate colors */
        xcolor.red = 0x0;
        xcolor.green = 0x0;
        xcolor.blue = 0x0;
        xcolor.flags = DoRed | DoGreen | DoBlue;
        if (!XAllocColor(dpy, cmap, &xcolor)) {
            printf("Couldn't allocate black!\n");
            exit(1);
        }
        Black = xcolor.pixel;

        xcolor.red = 0xffff;
        xcolor.green = 0x0;
        xcolor.blue = 0x0;
        xcolor.flags = DoRed | DoGreen | DoBlue;
        if (!XAllocColor(dpy, cmap, &xcolor)) {
            printf("Couldn't allocate red!\n");
            exit(1);
        }
        Red = xcolor.pixel;

        xcolor.red = 0x0;
        xcolor.green = 0xffff;
        xcolor.blue = 0x0;
        xcolor.flags = DoRed | DoGreen | DoBlue;
        if (!XAllocColor(dpy, cmap, &xcolor)) {
            printf("Couldn't allocate green!\n");
            exit(1);
        }
        Green = xcolor.pixel;

        xcolor.red = 0x0;
        xcolor.green = 0x0;
        xcolor.blue = 0xffff;
        xcolor.flags = DoRed | DoGreen | DoBlue;
        if (!XAllocColor(dpy, cmap, &xcolor)) {
            printf("Couldn't allocate blue!\n");
            exit(1);
        }
        Blue = xcolor.pixel;
    }

    /* set window attributes */
    attr.colormap = cmap;
    attr.event_mask = ExposureMask | StructureNotifyMask;
    attr.border_pixel = BlackPixel(dpy, scr);
    attr.background_pixel = BlackPixel(dpy, scr);
    attr_flags = CWColormap | CWEventMask | CWBorderPixel | CWBackPixel;

    /* Create the window */
    win = XCreateWindow(dpy, root, x, y, width, height, 0,
                        visinfo->depth, InputOutput,
                        visinfo->visual, attr_flags, &attr);
    if (!win) {
        printf("Couldn't open window!\n");
        exit(1);
    }

    XStringListToTextProperty(&title, 1, &tp);
    sh.flags = USPosition | USSize;
    XSetWMProperties(dpy, win, &tp, &tp, 0, 0, &sh, 0, 0);
    XMapWindow(dpy, win);
    while (1) {
        XNextEvent(dpy, &e);
        if (e.type == MapNotify && e.xmap.window == win) {
            break;
        }
    }

    /*
     * Now do the special Mesa/Xlib stuff!
     */

    visual = XMesaCreateVisual(dpy, visinfo, (GLboolean) color_flag, GL_FALSE,  /* alpha_flag */
                               GL_FALSE,        /* db_flag */
                               GL_FALSE,        /* stereo flag */
                               GL_FALSE,        /* ximage_flag */
                               0,       /* depth size */
                               0,       /* stencil size */
                               0, 0, 0, 0,      /* accum_size */
                               0,       /* num samples */
                               0,       /* level */
                               0        /* caveat */
        );
    if (!visual) {
        printf("Couldn't create Mesa/X visual!\n");
        exit(1);
    }

    /* Create a Mesa rendering context */
    context = XMesaCreateContext(visual, NULL   /* share_list */
        );
    if (!context) {
        printf("Couldn't create Mesa/X context!\n");
        exit(1);
    }

    buffer = XMesaCreateWindowBuffer(visual, win);
    if (!buffer) {
        printf("Couldn't create Mesa/X buffer!\n");
        exit(1);
    }

    XMesaMakeCurrent(context, buffer);

    /* Ready to render! */
}

static void
draw_cube(void)
{
    /* X faces */
    glIndexi(Red);
    glColor3f(1.0, 0.0, 0.0);
    glBegin(GL_POLYGON);
    glVertex3f(1.0, 1.0, 1.0);
    glVertex3f(1.0, -1.0, 1.0);
    glVertex3f(1.0, -1.0, -1.0);
    glVertex3f(1.0, 1.0, -1.0);
    glEnd();

    glBegin(GL_POLYGON);
    glVertex3f(-1.0, 1.0, 1.0);
    glVertex3f(-1.0, 1.0, -1.0);
    glVertex3f(-1.0, -1.0, -1.0);
    glVertex3f(-1.0, -1.0, 1.0);
    glEnd();

    /* Y faces */
    glIndexi(Green);
    glColor3f(0.0, 1.0, 0.0);
    glBegin(GL_POLYGON);
    glVertex3f(1.0, 1.0, 1.0);
    glVertex3f(1.0, 1.0, -1.0);
    glVertex3f(-1.0, 1.0, -1.0);
    glVertex3f(-1.0, 1.0, 1.0);
    glEnd();

    glBegin(GL_POLYGON);
    glVertex3f(1.0, -1.0, 1.0);
    glVertex3f(-1.0, -1.0, 1.0);
    glVertex3f(-1.0, -1.0, -1.0);
    glVertex3f(1.0, -1.0, -1.0);
    glEnd();

    /* Z faces */
    glIndexi(Blue);
    glColor3f(0.0, 0.0, 1.0);
    glBegin(GL_POLYGON);
    glVertex3f(1.0, 1.0, 1.0);
    glVertex3f(-1.0, 1.0, 1.0);
    glVertex3f(-1.0, -1.0, 1.0);
    glVertex3f(1.0, -1.0, 1.0);
    glEnd();

    glBegin(GL_POLYGON);
    glVertex3f(1.0, 1.0, -1.0);
    glVertex3f(1.0, -1.0, -1.0);
    glVertex3f(-1.0, -1.0, -1.0);
    glVertex3f(-1.0, 1.0, -1.0);
    glEnd();
}

static void
display_loop(void)
{
    GLfloat xrot, yrot, zrot;

    xrot = yrot = zrot = 0.0;

    glClearColor(0.0, 0.0, 0.0, 0.0);
    glClearIndex(Black);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-1.0, 1.0, -1.0, 1.0, 1.0, 10.0);
    glTranslatef(0.0, 0.0, -5.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

    glCullFace(GL_BACK);
    glEnable(GL_CULL_FACE);

    glShadeModel(GL_FLAT);

    while (1) {
        glClear(GL_COLOR_BUFFER_BIT);
        glPushMatrix();
        glRotatef(xrot, 1.0, 0.0, 0.0);
        glRotatef(yrot, 0.0, 1.0, 0.0);
        glRotatef(zrot, 0.0, 0.0, 1.0);

        draw_cube();

        glPopMatrix();
        glFinish();

        xrot += 10.0;
        yrot += 7.0;
        zrot -= 3.0;
    }

}

int
main(int argc, char *argv[])
{
    int mode = 0;

    if (argc >= 2) {
        if (strcmp(argv[1], "-ci") == 0)
            mode = 0;
        else if (strcmp(argv[1], "-rgb") == 0)
            mode = 1;
        else {
            printf("Bad flag: %s\n", argv[1]);
            printf("Specify -ci for 8-bit color index or -rgb for RGB mode\n");
            exit(1);
        }
    }
    else {
        printf("Specify -ci for 8-bit color index or -rgb for RGB mode\n");
        printf("Defaulting to  8-bit color index\n");
    }

    make_window(argv[0], mode);

    display_loop();
    return 0;
}

#endif
Commit	Line	Data
a09e091a JB	1	/*
	2	* Copyright (c) 2003 by the XFree86 Project, Inc.
	3	*
	4	* All Rights Reserved.
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining
	7	* a copy of this software and associated documentation files (the
	8	* "Software"), to deal in the Software without restriction, including
	9	* without limitation on the rights to use, copy, modify, merge,
	10	* publish, distribute, sublicense, and/or sell copies of the Software,
	11	* and to permit persons to whom the Software is furnished to do so,
	12	* subject to the following conditions:
	13	*
	14	* The above copyright notice and this permission notice (including the
	15	* next paragraph) shall be included in all copies or substantial
	16	* portions of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	19	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	20	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	21	* NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
	22	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	23	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	24	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	25	* SOFTWARE.
	26	*/
	27
	28	/*
	29	* Create a window and use the DMX extension to query the window's
	30	* back-end properties. Display the info inside the window itself.
	31	*
	32	* Brian Paul
	33	* 23 Jan 2003
	34	*/
	35
	36	#include <assert.h>
	37	#include <stdio.h>
	38	#include <stdlib.h>
	39	#include <string.h>
	40	#include <X11/Xlib.h>
	41	#include <X11/Xutil.h>
	42	#include <X11/extensions/dmxext.h>
	43
	44	static const char *FontName = "fixed";
	45
	46	static void
	47	EventLoop(Display * dpy, Window win, GC gc)
	48	{
	49	XEvent ev;
	50
	51	while (1) {
	52	XNextEvent(dpy, &ev);
	53	switch (ev.type) {
	54	case ReparentNotify:
	55	break;
	56	case MapNotify:
	57	break;
	58	case ConfigureNotify:
	59	case Expose:
	60	{
	61	int numScreens, count, i;
	62	DMXWindowAttributes *winInfo;
	63	int x, y;
	64	const char *msg = "DMX window info:";
65
66	DMXGetScreenCount(dpy, &numScreens);
67	winInfo = (DMXWindowAttributes *)
68	malloc(numScreens * sizeof(DMXWindowAttributes));
69	assert(winInfo);
70	if (!DMXGetWindowAttributes(dpy, win, &count, numScreens, winInfo)) {
71	printf("Could not get window information for 0x%08lx\n",
72	(long unsigned) win);
73	}
74	x = y = 50;
75	XClearWindow(dpy, win);
76	XDrawString(dpy, win, gc, x, y, msg, strlen(msg));
77	y += 20;
78	for (i = 0; i < count; i++) {
79	char str[500];
80
81	snprintf(str, sizeof(str),
82	"screen %d: pos: %dx%d+%d+%d visible: %dx%d+%d+%d",
83	winInfo[i].screen,
84	winInfo[i].pos.width, winInfo[i].pos.height,
85	winInfo[i].pos.x, winInfo[i].pos.y,
86	winInfo[i].vis.width, winInfo[i].vis.height,
87	winInfo[i].vis.x, winInfo[i].vis.y);
88	XDrawString(dpy, win, gc, x, y, str, strlen(str));
89	y += 20;
90	}
91	free(winInfo);
92	}
93	break;
94	default:
95	printf("Event type 0x%x\n", ev.type);
96	}
97	}
98	}
99
100	int
101	main(int argc, char *argv[])
102	{
103	const char *displayName = NULL;
104	Display *dpy;
105	int event_base, error_base;
106	int scr, n;
107	long vinfoMask, attrMask;
108	XVisualInfo vinfoTemp, *visInfo;
109	Visual *vis;
110	Window win, root;
111	XSetWindowAttributes attr;
112	XFontStruct *fontInfo;
113	GC gc;
114
115	if (argc > 1) {
116	displayName = argv[1];
117	}
118
119	dpy = XOpenDisplay(displayName);
120	if (!dpy) {
121	fprintf(stderr, "Unable to open display %s\n", displayName);
122	return -1;
123	}
124
125	if (!DMXQueryExtension(dpy, &event_base, &error_base)) {
126	fprintf(stderr, "DMX extension not available on this display.\n");
127	return -1;
128	}
129
130	scr = DefaultScreen(dpy);
131	root = RootWindow(dpy, scr);
132	vis = DefaultVisual(dpy, scr);
133
134	vinfoMask = VisualIDMask;
135	vinfoTemp.visualid = vis->visualid;
136	visInfo = XGetVisualInfo(dpy, vinfoMask, &vinfoTemp, &n);
137	if (!visInfo \|\| n != 1) {
138	fprintf(stderr, "Unable to get visual!\n");
139	XCloseDisplay(dpy);
140	return -1;
141	}
142
143	attr.background_pixel = 0;
144	attr.border_pixel = 0;
145	attr.colormap = XCreateColormap(dpy, root, visInfo->visual, AllocNone);
146	attr.event_mask = StructureNotifyMask \| ExposureMask;
147	attrMask = CWBackPixel \| CWBorderPixel \| CWColormap \| CWEventMask;
148
149	win = XCreateWindow(dpy, root, 500, 500, 600, 400, /* x, y, w, h */
150	0, /* border_width */
151	visInfo->depth, InputOutput,
152	visInfo->visual, attrMask, &attr);
153
154	if (!win) {
155	fprintf(stderr, "Unable to create window!\n");
156	XCloseDisplay(dpy);
157	return -1;
158	}
159
160	fontInfo = XLoadQueryFont(dpy, FontName);
161	if (!fontInfo) {
162	fprintf(stderr, "Error: font %s not found\n", FontName);
163	exit(0);
164	}
165
166	gc = XCreateGC(dpy, win, 0, NULL);
167	XSetBackground(dpy, gc, BlackPixel(dpy, scr));
168	XSetForeground(dpy, gc, WhitePixel(dpy, scr));
169	XSetFont(dpy, gc, fontInfo->fid);
170
171	XMapWindow(dpy, win);
172
173	EventLoop(dpy, win, gc);
174
175	XDestroyWindow(dpy, win);
176	XCloseDisplay(dpy);
177	return 0;
178	}
179
180	#if 00
181
182	static void
183	make_window(char *title, int color_flag)
184	{
185	int x = 10, y = 10, width = 400, height = 300;
186	Display *dpy;
187	int scr;
188	Window root, win;
189	Colormap cmap;
190	XColor xcolor;
191	int attr_flags;
192	XVisualInfo *visinfo;
193	XSetWindowAttributes attr;
194	XTextProperty tp;
195	XSizeHints sh;
196	XEvent e;
197	XMesaContext context;
198	XMesaVisual visual;
199	XMesaBuffer buffer;
200
201	/*
202	* Do the usual X things to make a window.
203	*/
204
205	dpy = XOpenDisplay(NULL);
206	if (!dpy) {
207	printf("Couldn't open default display!\n");
208	exit(1);
209	}
210
211	scr = DefaultScreen(dpy);
212	root = RootWindow(dpy, scr);
213
214	/* alloc visinfo struct */
215	visinfo = (XVisualInfo *) malloc(sizeof(XVisualInfo));
216
217	/* Get a visual and colormap */
218	if (color_flag) {
219	/* Open TrueColor window */
220
221	/*
222	if (!XMatchVisualInfo( dpy, scr, 24, TrueColor, visinfo )) {
223	printf("Couldn't get 24-bit TrueColor visual!\n");
224	exit(1);
225	}
226	*/
227	if (!XMatchVisualInfo(dpy, scr, 8, PseudoColor, visinfo)) {
228	printf("Couldn't get 8-bit PseudoColor visual!\n");
229	exit(1);
230	}
231
232	cmap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
233	Black = Red = Green = Blue = 0;
234	}
235	else {
236	/* Open color index window */
237
238	if (!XMatchVisualInfo(dpy, scr, 8, PseudoColor, visinfo)) {
239	printf("Couldn't get 8-bit PseudoColor visual\n");
240	exit(1);
241	}
242
243	cmap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
244
245	/* Allocate colors */
246	xcolor.red = 0x0;
247	xcolor.green = 0x0;
248	xcolor.blue = 0x0;
249	xcolor.flags = DoRed \| DoGreen \| DoBlue;
250	if (!XAllocColor(dpy, cmap, &xcolor)) {
251	printf("Couldn't allocate black!\n");
252	exit(1);
253	}
254	Black = xcolor.pixel;
255
256	xcolor.red = 0xffff;
257	xcolor.green = 0x0;
258	xcolor.blue = 0x0;
259	xcolor.flags = DoRed \| DoGreen \| DoBlue;
260	if (!XAllocColor(dpy, cmap, &xcolor)) {
261	printf("Couldn't allocate red!\n");
262	exit(1);
263	}
264	Red = xcolor.pixel;
265
266	xcolor.red = 0x0;
267	xcolor.green = 0xffff;
268	xcolor.blue = 0x0;
269	xcolor.flags = DoRed \| DoGreen \| DoBlue;
270	if (!XAllocColor(dpy, cmap, &xcolor)) {
271	printf("Couldn't allocate green!\n");
272	exit(1);
273	}
274	Green = xcolor.pixel;
275
276	xcolor.red = 0x0;
277	xcolor.green = 0x0;
278	xcolor.blue = 0xffff;
279	xcolor.flags = DoRed \| DoGreen \| DoBlue;
280	if (!XAllocColor(dpy, cmap, &xcolor)) {
281	printf("Couldn't allocate blue!\n");
282	exit(1);
283	}
284	Blue = xcolor.pixel;
285	}
286
287	/* set window attributes */
288	attr.colormap = cmap;
289	attr.event_mask = ExposureMask \| StructureNotifyMask;
290	attr.border_pixel = BlackPixel(dpy, scr);
291	attr.background_pixel = BlackPixel(dpy, scr);
292	attr_flags = CWColormap \| CWEventMask \| CWBorderPixel \| CWBackPixel;
293
294	/* Create the window */
295	win = XCreateWindow(dpy, root, x, y, width, height, 0,
296	visinfo->depth, InputOutput,
297	visinfo->visual, attr_flags, &attr);
298	if (!win) {
299	printf("Couldn't open window!\n");
300	exit(1);
301	}
302
303	XStringListToTextProperty(&title, 1, &tp);
304	sh.flags = USPosition \| USSize;
305	XSetWMProperties(dpy, win, &tp, &tp, 0, 0, &sh, 0, 0);
306	XMapWindow(dpy, win);
307	while (1) {
308	XNextEvent(dpy, &e);
309	if (e.type == MapNotify && e.xmap.window == win) {
310	break;
311	}
312	}
313
314	/*
315	* Now do the special Mesa/Xlib stuff!
316	*/
317
318	visual = XMesaCreateVisual(dpy, visinfo, (GLboolean) color_flag, GL_FALSE, /* alpha_flag */
319	GL_FALSE, /* db_flag */
320	GL_FALSE, /* stereo flag */
321	GL_FALSE, /* ximage_flag */
322	0, /* depth size */
323	0, /* stencil size */
324	0, 0, 0, 0, /* accum_size */
325	0, /* num samples */
326	0, /* level */
327	0 /* caveat */
328	);
329	if (!visual) {
330	printf("Couldn't create Mesa/X visual!\n");
331	exit(1);
332	}
333
334	/* Create a Mesa rendering context */
335	context = XMesaCreateContext(visual, NULL /* share_list */
336	);
337	if (!context) {
338	printf("Couldn't create Mesa/X context!\n");
339	exit(1);
340	}
341
342	buffer = XMesaCreateWindowBuffer(visual, win);
343	if (!buffer) {
344	printf("Couldn't create Mesa/X buffer!\n");
345	exit(1);
346	}
347
348	XMesaMakeCurrent(context, buffer);
349
350	/* Ready to render! */
351	}
352
353	static void
354	draw_cube(void)
355	{
356	/* X faces */
357	glIndexi(Red);
358	glColor3f(1.0, 0.0, 0.0);
359	glBegin(GL_POLYGON);
360	glVertex3f(1.0, 1.0, 1.0);
361	glVertex3f(1.0, -1.0, 1.0);
362	glVertex3f(1.0, -1.0, -1.0);
363	glVertex3f(1.0, 1.0, -1.0);
364	glEnd();
365
366	glBegin(GL_POLYGON);
367	glVertex3f(-1.0, 1.0, 1.0);
368	glVertex3f(-1.0, 1.0, -1.0);
369	glVertex3f(-1.0, -1.0, -1.0);
370	glVertex3f(-1.0, -1.0, 1.0);
371	glEnd();
372
373	/* Y faces */
374	glIndexi(Green);
375	glColor3f(0.0, 1.0, 0.0);
376	glBegin(GL_POLYGON);
377	glVertex3f(1.0, 1.0, 1.0);
378	glVertex3f(1.0, 1.0, -1.0);
379	glVertex3f(-1.0, 1.0, -1.0);
380	glVertex3f(-1.0, 1.0, 1.0);
381	glEnd();
382
383	glBegin(GL_POLYGON);
384	glVertex3f(1.0, -1.0, 1.0);
385	glVertex3f(-1.0, -1.0, 1.0);
386	glVertex3f(-1.0, -1.0, -1.0);
387	glVertex3f(1.0, -1.0, -1.0);
388	glEnd();
389
390	/* Z faces */
391	glIndexi(Blue);
392	glColor3f(0.0, 0.0, 1.0);
393	glBegin(GL_POLYGON);
394	glVertex3f(1.0, 1.0, 1.0);
395	glVertex3f(-1.0, 1.0, 1.0);
396	glVertex3f(-1.0, -1.0, 1.0);
397	glVertex3f(1.0, -1.0, 1.0);
398	glEnd();
399
400	glBegin(GL_POLYGON);
401	glVertex3f(1.0, 1.0, -1.0);
402	glVertex3f(1.0, -1.0, -1.0);
403	glVertex3f(-1.0, -1.0, -1.0);
404	glVertex3f(-1.0, 1.0, -1.0);
405	glEnd();
406	}
407
408	static void
409	display_loop(void)
410	{
411	GLfloat xrot, yrot, zrot;
412
413	xrot = yrot = zrot = 0.0;
414
415	glClearColor(0.0, 0.0, 0.0, 0.0);
416	glClearIndex(Black);
417
418	glMatrixMode(GL_PROJECTION);
419	glLoadIdentity();
420	glFrustum(-1.0, 1.0, -1.0, 1.0, 1.0, 10.0);
421	glTranslatef(0.0, 0.0, -5.0);
422
423	glMatrixMode(GL_MODELVIEW);
424	glLoadIdentity();
425
426	glCullFace(GL_BACK);
427	glEnable(GL_CULL_FACE);
428
429	glShadeModel(GL_FLAT);
430
431	while (1) {
432	glClear(GL_COLOR_BUFFER_BIT);
433	glPushMatrix();
434	glRotatef(xrot, 1.0, 0.0, 0.0);
435	glRotatef(yrot, 0.0, 1.0, 0.0);
436	glRotatef(zrot, 0.0, 0.0, 1.0);
437
438	draw_cube();
439
440	glPopMatrix();
441	glFinish();
442
443	xrot += 10.0;
444	yrot += 7.0;
445	zrot -= 3.0;
446	}
447
448	}
449
450	int
451	main(int argc, char *argv[])
452	{
453	int mode = 0;
454
455	if (argc >= 2) {
456	if (strcmp(argv[1], "-ci") == 0)
457	mode = 0;
458	else if (strcmp(argv[1], "-rgb") == 0)
459	mode = 1;
460	else {
461	printf("Bad flag: %s\n", argv[1]);
462	printf("Specify -ci for 8-bit color index or -rgb for RGB mode\n");
463	exit(1);
464	}
465	}
466	else {
467	printf("Specify -ci for 8-bit color index or -rgb for RGB mode\n");
468	printf("Defaulting to 8-bit color index\n");
469	}
470
471	make_window(argv[0], mode);
472
473	display_loop();
474	return 0;
475	}
476
477	#endif