diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/progs/xdemos/glthreads.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.1/progs/xdemos/glthreads.c | 416 |
1 files changed, 0 insertions, 416 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/progs/xdemos/glthreads.c b/nx-X11/extras/Mesa_6.4.1/progs/xdemos/glthreads.c deleted file mode 100644 index e3d71ed0a..000000000 --- a/nx-X11/extras/Mesa_6.4.1/progs/xdemos/glthreads.c +++ /dev/null @@ -1,416 +0,0 @@ -/* - * 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. - */ - - -/* - * This program tests GLX thread safety. - * Command line options: - * -n <num threads> Number of threads to create (default is 2) - * -display <display name> Specify X display (default is :0.0) - * - * Brian Paul 20 July 2000 - */ - - -#if defined(PTHREADS) /* defined by Mesa on Linux and other platforms */ - -#include <GL/gl.h> -#include <GL/glx.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <pthread.h> - - -/* - * Each window/thread/context: - */ -struct winthread { - Display *Dpy; - int Index; - pthread_t Thread; - Window Win; - GLXContext Context; - float Angle; - int WinWidth, WinHeight; - GLboolean NewSize; -}; - - -#define MAX_WINTHREADS 100 -static struct winthread WinThreads[MAX_WINTHREADS]; -static int NumWinThreads = 0; -static volatile GLboolean ExitFlag = GL_FALSE; - - - -static void -Error(const char *msg) -{ - fprintf(stderr, "Error: %s\n", msg); - exit(1); -} - - -/* draw a colored cube */ -static void -draw_object(void) -{ - glPushMatrix(); - glScalef(0.75, 0.75, 0.75); - - glColor3f(1, 0, 0); - glBegin(GL_POLYGON); - glVertex3f(1, -1, -1); - glVertex3f(1, 1, -1); - glVertex3f(1, 1, 1); - glVertex3f(1, -1, 1); - glEnd(); - - glColor3f(0, 1, 1); - glBegin(GL_POLYGON); - glVertex3f(-1, -1, -1); - glVertex3f(-1, 1, -1); - glVertex3f(-1, 1, 1); - glVertex3f(-1, -1, 1); - glEnd(); - - glColor3f(0, 1, 0); - glBegin(GL_POLYGON); - glVertex3f(-1, 1, -1); - glVertex3f( 1, 1, -1); - glVertex3f( 1, 1, 1); - glVertex3f(-1, 1, 1); - glEnd(); - - glColor3f(1, 0, 1); - glBegin(GL_POLYGON); - glVertex3f(-1, -1, -1); - glVertex3f( 1, -1, -1); - glVertex3f( 1, -1, 1); - glVertex3f(-1, -1, 1); - glEnd(); - - glColor3f(0, 0, 1); - glBegin(GL_POLYGON); - glVertex3f(-1, -1, 1); - glVertex3f( 1, -1, 1); - glVertex3f( 1, 1, 1); - glVertex3f(-1, 1, 1); - glEnd(); - - glColor3f(1, 1, 0); - glBegin(GL_POLYGON); - glVertex3f(-1, -1, -1); - glVertex3f( 1, -1, -1); - glVertex3f( 1, 1, -1); - glVertex3f(-1, 1, -1); - glEnd(); - glPopMatrix(); -} - - -/* signal resize of given window */ -static void -resize(struct winthread *wt, int w, int h) -{ - wt->NewSize = GL_TRUE; - wt->WinWidth = w; - wt->WinHeight = h; -} - - -/* - * We have an instance of this for each thread. - */ -static void -draw_loop(struct winthread *wt) -{ - while (!ExitFlag) { - - glXMakeCurrent(wt->Dpy, wt->Win, wt->Context); - - glEnable(GL_DEPTH_TEST); - - if (wt->NewSize) { - GLfloat w = (float) wt->WinWidth / (float) wt->WinHeight; - glViewport(0, 0, wt->WinWidth, wt->WinHeight); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum(-w, w, -1.0, 1.0, 1.5, 10); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0, 0, -2.5); - wt->NewSize = GL_FALSE; - } - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix(); - glRotatef(wt->Angle, 0, 0, 1); - glRotatef(wt->Angle, 1, 0, 0); - glScalef(0.7, 0.7, 0.7); - draw_object(); - glPopMatrix(); - - glXSwapBuffers(wt->Dpy, wt->Win); - - wt->Angle += 1.0; - } -} - - -/* - * The main process thread runs this loop. - */ -static void -event_loop(Display *dpy) -{ - XEvent event; - int i; - - while (!ExitFlag) { - XNextEvent(dpy, &event); - switch (event.type) { - case ConfigureNotify: - /* Find winthread for this event's window */ - for (i = 0; i < NumWinThreads; i++) { - struct winthread *wt = &WinThreads[i]; - if (event.xconfigure.window == wt->Win) { - resize(wt, event.xconfigure.width, - event.xconfigure.height); - break; - } - } - break; - case KeyPress: - /* tell all threads to exit */ - ExitFlag = GL_TRUE; - /*printf("exit draw_loop %d\n", wt->Index);*/ - return; - default: - /*no-op*/ ; - } - } -} - - -/* - * we'll call this once for each thread, before the threads are created. - */ -static void -create_window(struct winthread *wt) -{ - Window win; - GLXContext ctx; - int attrib[] = { GLX_RGBA, - GLX_RED_SIZE, 1, - GLX_GREEN_SIZE, 1, - GLX_BLUE_SIZE, 1, - GLX_DEPTH_SIZE, 1, - GLX_DOUBLEBUFFER, - None }; - int scrnum; - XSetWindowAttributes attr; - unsigned long mask; - Window root; - XVisualInfo *visinfo; - int width = 80, height = 80; - int xpos = (wt->Index % 10) * 90; - int ypos = (wt->Index / 10) * 100; - - scrnum = DefaultScreen(wt->Dpy); - root = RootWindow(wt->Dpy, scrnum); - - visinfo = glXChooseVisual(wt->Dpy, scrnum, attrib); - if (!visinfo) { - Error("Unable to find RGB, Z, double-buffered visual"); - } - - /* window attributes */ - attr.background_pixel = 0; - attr.border_pixel = 0; - attr.colormap = XCreateColormap(wt->Dpy, root, visinfo->visual, AllocNone); - attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; - mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; - - win = XCreateWindow(wt->Dpy, root, xpos, ypos, width, height, - 0, visinfo->depth, InputOutput, - visinfo->visual, mask, &attr); - if (!win) { - Error("Couldn't create window"); - } - - { - XSizeHints sizehints; - sizehints.x = xpos; - sizehints.y = ypos; - sizehints.width = width; - sizehints.height = height; - sizehints.flags = USSize | USPosition; - XSetNormalHints(wt->Dpy, win, &sizehints); - XSetStandardProperties(wt->Dpy, win, "glthreads", "glthreads", - None, (char **)NULL, 0, &sizehints); - } - - - ctx = glXCreateContext(wt->Dpy, visinfo, NULL, True); - if (!ctx) { - Error("Couldn't create GLX context"); - } - - XMapWindow(wt->Dpy, win); - XSync(wt->Dpy, 0); - - /* save the info for this window/context */ - wt->Win = win; - wt->Context = ctx; - wt->Angle = 0.0; - wt->WinWidth = width; - wt->WinHeight = height; - wt->NewSize = GL_TRUE; -} - - -/* - * Called by pthread_create() - */ -static void * -thread_function(void *p) -{ - struct winthread *wt = (struct winthread *) p; - draw_loop(wt); - return NULL; -} - - -/* - * called before exit to wait for all threads to finish - */ -static void -clean_up(void) -{ - int i; - - /* wait for threads to finish */ - for (i = 0; i < NumWinThreads; i++) { - pthread_join(WinThreads[i].Thread, NULL); - } - - for (i = 0; i < NumWinThreads; i++) { - glXDestroyContext(WinThreads[i].Dpy, WinThreads[i].Context); - XDestroyWindow(WinThreads[i].Dpy, WinThreads[i].Win); - } -} - - - -int -main(int argc, char *argv[]) -{ - char *displayName = ":0.0"; - int numThreads = 2; - Display *dpy; - int i; - Status threadStat; - - if (argc == 1) { - printf("threadgl: test of GL thread safety (any key = exit)\n"); - printf("Usage:\n"); - printf(" threadgl [-display dpyName] [-n numthreads]\n"); - } - else { - int i; - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-display") == 0 && i + 1 < argc) { - displayName = argv[i + 1]; - i++; - } - else if (strcmp(argv[i], "-n") == 0 && i + 1 < argc) { - numThreads = atoi(argv[i + 1]); - if (numThreads < 1) - numThreads = 1; - else if (numThreads > MAX_WINTHREADS) - numThreads = MAX_WINTHREADS; - i++; - } - } - } - - /* - * VERY IMPORTANT: call XInitThreads() before any other Xlib functions. - */ - threadStat = XInitThreads(); - if (threadStat) { - printf("XInitThreads() returned %d (success)\n", (int) threadStat); - } - else { - printf("XInitThreads() returned 0 (failure- this program may fail)\n"); - } - - - dpy = XOpenDisplay(displayName); - if (!dpy) { - fprintf(stderr, "Unable to open display %s\n", displayName); - return -1; - } - - NumWinThreads = numThreads; - - /* Create the GLX windows and contexts */ - for (i = 0; i < numThreads; i++) { - WinThreads[i].Dpy = dpy; - WinThreads[i].Index = i; - create_window(&WinThreads[i]); - } - - /* Create the threads */ - for (i = 0; i < numThreads; i++) { - pthread_create(&WinThreads[i].Thread, NULL, thread_function, - (void*) &WinThreads[i]); - printf("Created Thread %d\n", (int) WinThreads[i].Thread); - } - - event_loop(dpy); - - clean_up(); - - XCloseDisplay(dpy); - - return 0; -} - - -#else /* PTHREADS */ - - -#include <stdio.h> - -int -main(int argc, char *argv[]) -{ - printf("Sorry, this program wasn't compiled with PTHREADS defined.\n"); - return 0; -} - - -#endif /* PTHREADS */ |