Brian Paul | 0852d0b | 2000-06-13 19:41:30 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Exercise multiple GLX connections on multiple X displays. |
| 4 | * Direct GLX contexts are attempted first, then indirect. |
| 5 | * Each window will display a spinning green triangle. |
| 6 | * |
| 7 | * Copyright (C) 2000 Brian Paul All Rights Reserved. |
| 8 | * |
| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 10 | * copy of this software and associated documentation files (the "Software"), |
| 11 | * to deal in the Software without restriction, including without limitation |
| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
| 14 | * Software is furnished to do so, subject to the following conditions: |
| 15 | * |
| 16 | * The above copyright notice and this permission notice shall be included |
| 17 | * in all copies or substantial portions of the Software. |
| 18 | * |
| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 23 | * AN 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 SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | |
| 28 | #include <GL/gl.h> |
| 29 | #include <GL/glx.h> |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
Brian Paul | a3e44f4 | 2002-03-08 19:44:28 +0000 | [diff] [blame] | 32 | #include <string.h> |
Brian Paul | 0852d0b | 2000-06-13 19:41:30 +0000 | [diff] [blame] | 33 | #include <unistd.h> |
| 34 | |
| 35 | |
| 36 | |
| 37 | /* |
| 38 | * Each display/window/context: |
| 39 | */ |
| 40 | struct head { |
| 41 | char DisplayName[1000]; |
| 42 | Display *Dpy; |
| 43 | Window Win; |
| 44 | GLXContext Context; |
| 45 | float Angle; |
| 46 | char Renderer[1000]; |
| 47 | char Vendor[1000]; |
| 48 | char Version[1000]; |
| 49 | }; |
| 50 | |
| 51 | |
| 52 | #define MAX_HEADS 20 |
| 53 | static struct head Heads[MAX_HEADS]; |
| 54 | static int NumHeads = 0; |
| 55 | |
| 56 | |
| 57 | static void |
| 58 | Error(const char *display, const char *msg) |
| 59 | { |
Brian | 73eee24 | 2006-12-13 08:30:26 -0700 | [diff] [blame] | 60 | fprintf(stderr, "Error on display %s - %s\n", XDisplayName(display), msg); |
Brian Paul | 0852d0b | 2000-06-13 19:41:30 +0000 | [diff] [blame] | 61 | exit(1); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | static struct head * |
| 66 | AddHead(const char *displayName) |
| 67 | { |
| 68 | Display *dpy; |
| 69 | Window win; |
| 70 | GLXContext ctx; |
| 71 | int attrib[] = { GLX_RGBA, |
| 72 | GLX_RED_SIZE, 1, |
| 73 | GLX_GREEN_SIZE, 1, |
| 74 | GLX_BLUE_SIZE, 1, |
| 75 | GLX_DOUBLEBUFFER, |
| 76 | None }; |
| 77 | int scrnum; |
| 78 | XSetWindowAttributes attr; |
| 79 | unsigned long mask; |
| 80 | Window root; |
| 81 | XVisualInfo *visinfo; |
| 82 | int width = 300, height = 300; |
| 83 | int xpos = 10, ypos = 10; |
| 84 | |
| 85 | if (NumHeads >= MAX_HEADS) |
| 86 | return NULL; |
| 87 | |
| 88 | dpy = XOpenDisplay(displayName); |
| 89 | if (!dpy) { |
| 90 | Error(displayName, "Unable to open display"); |
| 91 | return NULL; |
| 92 | } |
| 93 | |
| 94 | scrnum = DefaultScreen(dpy); |
| 95 | root = RootWindow(dpy, scrnum); |
| 96 | |
| 97 | visinfo = glXChooseVisual(dpy, scrnum, attrib); |
| 98 | if (!visinfo) { |
| 99 | Error(displayName, "Unable to find RGB, double-buffered visual"); |
| 100 | return NULL; |
| 101 | } |
| 102 | |
| 103 | /* window attributes */ |
| 104 | attr.background_pixel = 0; |
| 105 | attr.border_pixel = 0; |
| 106 | attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone); |
| 107 | attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; |
| 108 | mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; |
| 109 | |
| 110 | win = XCreateWindow(dpy, root, 0, 0, width, height, |
| 111 | 0, visinfo->depth, InputOutput, |
| 112 | visinfo->visual, mask, &attr); |
| 113 | if (!win) { |
| 114 | Error(displayName, "Couldn't create window"); |
| 115 | return NULL; |
| 116 | } |
| 117 | |
| 118 | { |
| 119 | XSizeHints sizehints; |
| 120 | sizehints.x = xpos; |
| 121 | sizehints.y = ypos; |
| 122 | sizehints.width = width; |
| 123 | sizehints.height = height; |
| 124 | sizehints.flags = USSize | USPosition; |
| 125 | XSetNormalHints(dpy, win, &sizehints); |
| 126 | XSetStandardProperties(dpy, win, displayName, displayName, |
| 127 | None, (char **)NULL, 0, &sizehints); |
| 128 | } |
| 129 | |
| 130 | |
| 131 | ctx = glXCreateContext(dpy, visinfo, NULL, True); |
| 132 | if (!ctx) { |
| 133 | Error(displayName, "Couldn't create GLX context"); |
| 134 | return NULL; |
| 135 | } |
| 136 | |
| 137 | XMapWindow(dpy, win); |
| 138 | |
| 139 | if (!glXMakeCurrent(dpy, win, ctx)) { |
| 140 | Error(displayName, "glXMakeCurrent failed"); |
| 141 | printf("glXMakeCurrent failed in Redraw()\n"); |
Brian Paul | db6aa58 | 2000-11-10 17:23:02 +0000 | [diff] [blame] | 142 | return NULL; |
Brian Paul | 0852d0b | 2000-06-13 19:41:30 +0000 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | /* save the info for this head */ |
| 146 | { |
| 147 | struct head *h = &Heads[NumHeads]; |
| 148 | strcpy(h->DisplayName, displayName); |
| 149 | h->Dpy = dpy; |
| 150 | h->Win = win; |
| 151 | h->Context = ctx; |
| 152 | h->Angle = 0.0; |
| 153 | strcpy(h->Version, (char *) glGetString(GL_VERSION)); |
| 154 | strcpy(h->Vendor, (char *) glGetString(GL_VENDOR)); |
| 155 | strcpy(h->Renderer, (char *) glGetString(GL_RENDERER)); |
| 156 | NumHeads++; |
| 157 | return &Heads[NumHeads-1]; |
| 158 | } |
| 159 | |
| 160 | } |
| 161 | |
| 162 | |
| 163 | static void |
| 164 | Redraw(struct head *h) |
| 165 | { |
| 166 | if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) { |
| 167 | Error(h->DisplayName, "glXMakeCurrent failed"); |
| 168 | printf("glXMakeCurrent failed in Redraw()\n"); |
| 169 | return; |
| 170 | } |
| 171 | |
| 172 | h->Angle += 1.0; |
| 173 | |
| 174 | glShadeModel(GL_FLAT); |
| 175 | glClearColor(0.5, 0.5, 0.5, 1.0); |
| 176 | glClear(GL_COLOR_BUFFER_BIT); |
| 177 | |
| 178 | /* draw green triangle */ |
| 179 | glColor3f(0.0, 1.0, 0.0); |
| 180 | glPushMatrix(); |
| 181 | glRotatef(h->Angle, 0, 0, 1); |
| 182 | glBegin(GL_TRIANGLES); |
| 183 | glVertex2f(0, 0.8); |
| 184 | glVertex2f(-0.8, -0.7); |
| 185 | glVertex2f(0.8, -0.7); |
| 186 | glEnd(); |
| 187 | glPopMatrix(); |
| 188 | |
| 189 | glXSwapBuffers(h->Dpy, h->Win); |
| 190 | } |
| 191 | |
| 192 | |
| 193 | |
| 194 | static void |
| 195 | Resize(const struct head *h, unsigned int width, unsigned int height) |
| 196 | { |
| 197 | if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) { |
| 198 | Error(h->DisplayName, "glXMakeCurrent failed in Resize()"); |
| 199 | return; |
| 200 | } |
| 201 | glFlush(); |
| 202 | glViewport(0, 0, width, height); |
| 203 | glMatrixMode(GL_PROJECTION); |
| 204 | glLoadIdentity(); |
| 205 | glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0); |
| 206 | } |
| 207 | |
| 208 | |
| 209 | |
| 210 | static void |
| 211 | EventLoop(void) |
| 212 | { |
| 213 | while (1) { |
| 214 | int i; |
| 215 | for (i = 0; i < NumHeads; i++) { |
| 216 | struct head *h = &Heads[i]; |
| 217 | while (XPending(h->Dpy) > 0) { |
| 218 | XEvent event; |
| 219 | XNextEvent(h->Dpy, &event); |
| 220 | if (event.xany.window == h->Win) { |
| 221 | switch (event.type) { |
| 222 | case Expose: |
| 223 | Redraw(h); |
| 224 | break; |
| 225 | case ConfigureNotify: |
| 226 | Resize(h, event.xconfigure.width, event.xconfigure.height); |
| 227 | break; |
| 228 | case KeyPress: |
| 229 | return; |
| 230 | default: |
| 231 | /*no-op*/ ; |
| 232 | } |
| 233 | } |
| 234 | else { |
| 235 | printf("window mismatch\n"); |
| 236 | } |
| 237 | } |
| 238 | Redraw(h); |
| 239 | } |
| 240 | usleep(1); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | |
| 245 | |
| 246 | static void |
| 247 | PrintInfo(const struct head *h) |
| 248 | { |
| 249 | printf("Name: %s\n", h->DisplayName); |
Brian Paul | a511b70 | 2004-09-16 19:40:22 +0000 | [diff] [blame] | 250 | printf(" Display: %p\n", (void *) h->Dpy); |
Brian Paul | a3e44f4 | 2002-03-08 19:44:28 +0000 | [diff] [blame] | 251 | printf(" Window: 0x%x\n", (int) h->Win); |
Brian Paul | d93b68f | 2003-04-21 14:51:16 +0000 | [diff] [blame] | 252 | printf(" Context: 0x%lx\n", (long) h->Context); |
Brian Paul | 0852d0b | 2000-06-13 19:41:30 +0000 | [diff] [blame] | 253 | printf(" GL_VERSION: %s\n", h->Version); |
| 254 | printf(" GL_VENDOR: %s\n", h->Vendor); |
| 255 | printf(" GL_RENDERER: %s\n", h->Renderer); |
| 256 | } |
| 257 | |
| 258 | |
| 259 | int |
| 260 | main(int argc, char *argv[]) |
| 261 | { |
| 262 | int i; |
| 263 | if (argc == 1) { |
| 264 | struct head *h; |
| 265 | printf("glxheads: exercise multiple GLX connections (any key = exit)\n"); |
| 266 | printf("Usage:\n"); |
| 267 | printf(" glxheads xdisplayname ...\n"); |
| 268 | printf("Example:\n"); |
| 269 | printf(" glxheads :0 mars:0 venus:1\n"); |
Jon TURNEY | 5795545 | 2009-06-21 11:58:25 +0100 | [diff] [blame] | 270 | |
| 271 | h = AddHead(XDisplayName(NULL)); |
Brian Paul | 0852d0b | 2000-06-13 19:41:30 +0000 | [diff] [blame] | 272 | if (h) |
| 273 | PrintInfo(h); |
| 274 | } |
| 275 | else { |
| 276 | for (i = 1; i < argc; i++) { |
| 277 | const char *name = argv[i]; |
| 278 | struct head *h = AddHead(name); |
| 279 | if (h) { |
| 280 | PrintInfo(h); |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | EventLoop(); |
| 286 | return 0; |
| 287 | } |