initial check-in

progs/xdemos/glxheads.c

@@ -0,0 +1,286 @@
+/* $Id: glxheads.c,v 1.1 2000/06/13 19:41:30 brianp Exp $ */
+
+/*
+ * Exercise multiple GLX connections on multiple X displays.
+ * Direct GLX contexts are attempted first, then indirect.
+ * Each window will display a spinning green triangle.
+ *
+ * Copyright (C) 2000  Brian Paul   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
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+
+/*
+ * Each display/window/context:
+ */
+struct head {
+   char DisplayName[1000];
+   Display *Dpy;
+   Window Win;
+   GLXContext Context;
+   float Angle;
+   char Renderer[1000];
+   char Vendor[1000];
+   char Version[1000];
+};
+
+
+#define MAX_HEADS 20
+static struct head Heads[MAX_HEADS];
+static int NumHeads = 0;
+
+
+static void
+Error(const char *display, const char *msg)
+{
+   fprintf(stderr, "Error on display %s - %s\n", display, msg);
+   exit(1);
+}
+
+
+static struct head *
+AddHead(const char *displayName)
+{
+   Display *dpy;
+   Window win;
+   GLXContext ctx;
+   int attrib[] = { GLX_RGBA,
+		    GLX_RED_SIZE, 1,
+		    GLX_GREEN_SIZE, 1,
+		    GLX_BLUE_SIZE, 1,
+		    GLX_DOUBLEBUFFER,
+		    None };
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   XVisualInfo *visinfo;
+   int width = 300, height = 300;
+   int xpos = 10, ypos = 10;
+
+   if (NumHeads >= MAX_HEADS)
+      return NULL;
+
+   dpy = XOpenDisplay(displayName);
+   if (!dpy) {
+      Error(displayName, "Unable to open display");
+      return NULL;
+   }
+
+   scrnum = DefaultScreen(dpy);
+   root = RootWindow(dpy, scrnum);
+
+   visinfo = glXChooseVisual(dpy, scrnum, attrib);
+   if (!visinfo) {
+      Error(displayName, "Unable to find RGB, double-buffered visual");
+      return NULL;
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow(dpy, root, 0, 0, width, height,
+		        0, visinfo->depth, InputOutput,
+		        visinfo->visual, mask, &attr);
+   if (!win) {
+      Error(displayName, "Couldn't create window");
+      return NULL;
+   }
+
+   {
+      XSizeHints sizehints;
+      sizehints.x = xpos;
+      sizehints.y = ypos;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(dpy, win, &sizehints);
+      XSetStandardProperties(dpy, win, displayName, displayName,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+
+   ctx = glXCreateContext(dpy, visinfo, NULL, True);
+   if (!ctx) {
+      Error(displayName, "Couldn't create GLX context");
+      return NULL;
+   }
+
+   XMapWindow(dpy, win);
+
+   if (!glXMakeCurrent(dpy, win, ctx)) {
+      Error(displayName, "glXMakeCurrent failed");
+      printf("glXMakeCurrent failed in Redraw()\n");
+      return;
+   }
+
+   /* save the info for this head */
+   {
+      struct head *h = &Heads[NumHeads];
+      strcpy(h->DisplayName, displayName);
+      h->Dpy = dpy;
+      h->Win = win;
+      h->Context = ctx;
+      h->Angle = 0.0;
+      strcpy(h->Version, (char *) glGetString(GL_VERSION));
+      strcpy(h->Vendor, (char *) glGetString(GL_VENDOR));
+      strcpy(h->Renderer, (char *) glGetString(GL_RENDERER));
+      NumHeads++;
+      return &Heads[NumHeads-1];
+   }
+
+}
+
+
+static void
+Redraw(struct head *h)
+{
+   if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
+      Error(h->DisplayName, "glXMakeCurrent failed");
+      printf("glXMakeCurrent failed in Redraw()\n");
+      return;
+   }
+
+   h->Angle += 1.0;
+
+   glShadeModel(GL_FLAT);
+   glClearColor(0.5, 0.5, 0.5, 1.0);
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   /* draw green triangle */
+   glColor3f(0.0, 1.0, 0.0);
+   glPushMatrix();
+   glRotatef(h->Angle, 0, 0, 1);
+   glBegin(GL_TRIANGLES);
+   glVertex2f(0, 0.8);
+   glVertex2f(-0.8, -0.7);
+   glVertex2f(0.8, -0.7);
+   glEnd();
+   glPopMatrix();
+
+   glXSwapBuffers(h->Dpy, h->Win);
+}
+
+
+
+static void
+Resize(const struct head *h, unsigned int width, unsigned int height)
+{
+   if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
+      Error(h->DisplayName, "glXMakeCurrent failed in Resize()");
+      return;
+   }
+   glFlush();
+   glViewport(0, 0, width, height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
+}
+
+
+
+static void
+EventLoop(void)
+{
+   while (1) {
+      int i;
+      for (i = 0; i < NumHeads; i++) {
+         struct head *h = &Heads[i];
+         while (XPending(h->Dpy) > 0) {
+            XEvent event;
+            XNextEvent(h->Dpy, &event);
+            if (event.xany.window == h->Win) {
+               switch (event.type) {
+                  case Expose:
+                     Redraw(h);
+                     break;
+                  case ConfigureNotify:
+                     Resize(h, event.xconfigure.width, event.xconfigure.height);
+                     break;
+                  case KeyPress:
+                     return;
+                  default:
+                     /*no-op*/ ;
+               }
+            }
+            else {
+               printf("window mismatch\n");
+            }
+         }
+         Redraw(h);
+      }
+      usleep(1);
+   }
+}
+
+
+
+static void
+PrintInfo(const struct head *h)
+{
+   printf("Name: %s\n", h->DisplayName);
+   printf("  Display:     0x%x\n", h->Dpy);
+   printf("  Window:      0x%x\n", h->Win);
+   printf("  Context:     0x%x\n", h->Context);
+   printf("  GL_VERSION:  %s\n", h->Version);
+   printf("  GL_VENDOR:   %s\n", h->Vendor);
+   printf("  GL_RENDERER: %s\n", h->Renderer);
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   int i;
+   if (argc == 1) {
+      struct head *h;
+      printf("glxheads: exercise multiple GLX connections (any key = exit)\n");
+      printf("Usage:\n");
+      printf("  glxheads xdisplayname ...\n");
+      printf("Example:\n");
+      printf("  glxheads :0 mars:0 venus:1\n");
+      h = AddHead(":0");
+      if (h)
+         PrintInfo(h);
+   }
+   else {
+      for (i = 1; i < argc; i++) {
+         const char *name = argv[i];
+         struct head *h = AddHead(name);
+         if (h) {
+            PrintInfo(h);
+         }
+      }
+   }
+
+   EventLoop();
+   return 0;
+}

progs/xdemos/manywin.c

@@ -0,0 +1,289 @@
+/* $Id: manywin.c,v 1.1 2000/06/13 19:41:30 brianp Exp $ */
+
+/*
+ * Create N GLX windows/contexts and render to them in round-robin
+ * order.
+ *
+ * Copyright (C) 2000  Brian Paul   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
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+/*
+ * Each display/window/context:
+ */
+struct head {
+   char DisplayName[1000];
+   Display *Dpy;
+   Window Win;
+   GLXContext Context;
+   float Angle;
+   char Renderer[1000];
+   char Vendor[1000];
+   char Version[1000];
+};
+
+
+#define MAX_HEADS 200
+static struct head Heads[MAX_HEADS];
+static int NumHeads = 0;
+
+
+static void
+Error(const char *display, const char *msg)
+{
+   fprintf(stderr, "Error on display %s - %s\n", display, msg);
+   exit(1);
+}
+
+
+static struct head *
+AddHead(const char *displayName, const char *name)
+{
+   Display *dpy;
+   Window win;
+   GLXContext ctx;
+   int attrib[] = { GLX_RGBA,
+		    GLX_RED_SIZE, 1,
+		    GLX_GREEN_SIZE, 1,
+		    GLX_BLUE_SIZE, 1,
+		    GLX_DOUBLEBUFFER,
+		    None };
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   XVisualInfo *visinfo;
+   int width = 90, height = 90;
+   int xpos = 0, ypos = 0;
+
+   if (NumHeads >= MAX_HEADS)
+      return NULL;
+
+   dpy = XOpenDisplay(displayName);
+   if (!dpy) {
+      Error(displayName, "Unable to open display");
+      return NULL;
+   }
+
+   scrnum = DefaultScreen(dpy);
+   root = RootWindow(dpy, scrnum);
+
+   visinfo = glXChooseVisual(dpy, scrnum, attrib);
+   if (!visinfo) {
+      Error(displayName, "Unable to find RGB, double-buffered visual");
+      return NULL;
+   }
+
+   /* window attributes */
+   xpos = (NumHeads % 10) * 100;
+   ypos = (NumHeads / 10) * 100;
+   printf("%d, %d\n", xpos, ypos);
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow(dpy, root, xpos, ypos, width, height,
+		        0, visinfo->depth, InputOutput,
+		        visinfo->visual, mask, &attr);
+   if (!win) {
+      Error(displayName, "Couldn't create window");
+      return NULL;
+   }
+
+   {
+      XSizeHints sizehints;
+      sizehints.x = xpos;
+      sizehints.y = ypos;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(dpy, win, &sizehints);
+      XSetStandardProperties(dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+
+   ctx = glXCreateContext(dpy, visinfo, NULL, True);
+   if (!ctx) {
+      Error(displayName, "Couldn't create GLX context");
+      return NULL;
+   }
+
+   XMapWindow(dpy, win);
+
+   if (!glXMakeCurrent(dpy, win, ctx)) {
+      Error(displayName, "glXMakeCurrent failed");
+      printf("glXMakeCurrent failed in Redraw()\n");
+      return;
+   }
+
+   /* save the info for this head */
+   {
+      struct head *h = &Heads[NumHeads];
+      strcpy(h->DisplayName, name);
+      h->Dpy = dpy;
+      h->Win = win;
+      h->Context = ctx;
+      h->Angle = 0.0;
+      strcpy(h->Version, (char *) glGetString(GL_VERSION));
+      strcpy(h->Vendor, (char *) glGetString(GL_VENDOR));
+      strcpy(h->Renderer, (char *) glGetString(GL_RENDERER));
+      NumHeads++;
+      return &Heads[NumHeads-1];
+   }
+
+}
+
+
+static void
+Redraw(struct head *h)
+{
+   if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
+      Error(h->DisplayName, "glXMakeCurrent failed");
+      printf("glXMakeCurrent failed in Redraw()\n");
+      return;
+   }
+
+   h->Angle += 1.0;
+
+   glShadeModel(GL_FLAT);
+   glClearColor(0.5, 0.5, 0.5, 1.0);
+   glClear(GL_COLOR_BUFFER_BIT);
+
+   /* draw green triangle */
+   glColor3f(0.0, 1.0, 0.0);
+   glPushMatrix();
+   glRotatef(h->Angle, 0, 0, 1);
+   glBegin(GL_TRIANGLES);
+   glVertex2f(0, 0.8);
+   glVertex2f(-0.8, -0.7);
+   glVertex2f(0.8, -0.7);
+   glEnd();
+   glPopMatrix();
+
+   glXSwapBuffers(h->Dpy, h->Win);
+}
+
+
+
+static void
+Resize(const struct head *h, unsigned int width, unsigned int height)
+{
+   if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
+      Error(h->DisplayName, "glXMakeCurrent failed in Resize()");
+      return;
+   }
+   glFlush();
+   glViewport(0, 0, width, height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
+}
+
+
+
+static void
+EventLoop(void)
+{
+   while (1) {
+      int i;
+      for (i = 0; i < NumHeads; i++) {
+         struct head *h = &Heads[i];
+         while (XPending(h->Dpy) > 0) {
+            XEvent event;
+            XNextEvent(h->Dpy, &event);
+            if (event.xany.window == h->Win) {
+               switch (event.type) {
+                  case Expose:
+                     Redraw(h);
+                     break;
+                  case ConfigureNotify:
+                     Resize(h, event.xconfigure.width, event.xconfigure.height);
+                     break;
+                  case KeyPress:
+                     return;
+                  default:
+                     /*no-op*/ ;
+               }
+            }
+            else {
+               printf("window mismatch\n");
+            }
+         }
+         Redraw(h);
+      }
+      usleep(1);
+   }
+}
+
+
+
+static void
+PrintInfo(const struct head *h)
+{
+   printf("Name: %s\n", h->DisplayName);
+   printf("  Display:     0x%x\n", h->Dpy);
+   printf("  Window:      0x%x\n", h->Win);
+   printf("  Context:     0x%x\n", h->Context);
+   printf("  GL_VERSION:  %s\n", h->Version);
+   printf("  GL_VENDOR:   %s\n", h->Vendor);
+   printf("  GL_RENDERER: %s\n", h->Renderer);
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   int i;
+   if (argc == 1) {
+      struct head *h;
+      printf("manywin: open N simultaneous glx windows\n");
+      printf("Usage:\n");
+      printf("  manywin numWindows\n");
+      printf("Example:\n");
+      printf("  manywin 10\n");
+      return 0;
+   }
+   else {
+      int n = atoi(argv[1]);
+      printf("%d windows\n", n);
+      for (i = 0; i < n; i++) {
+         char name[100];
+         struct head *h;
+         sprintf(name, "%d", i);
+         h = AddHead(":0", name);
+         if (h) {
+            PrintInfo(h);
+         }
+      }
+   }
+
+   EventLoop();
+   return 0;
+}