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Diffstat (limited to 'progs/xdemos/opencloseopen.c')
| -rw-r--r-- | progs/xdemos/opencloseopen.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/progs/xdemos/opencloseopen.c b/progs/xdemos/opencloseopen.c new file mode 100644 index 000000000..2e4de24c7 --- /dev/null +++ b/progs/xdemos/opencloseopen.c @@ -0,0 +1,189 @@ +/* + * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. + * (C) Copyright IBM Corporation 2003 + * + * 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 <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <X11/Xlib.h> +#include <GL/gl.h> +#include <GL/glx.h> + +/** \file opencloseopen.c + * Simple test for Mesa bug #508473. Create a window and rendering context. + * Draw a single frame. Close the window, destroy the context, and close + * the display. Re-open the display, create a new window and context. This + * should work, but, at least as of Mesa 5.1, it segfaults. See the bug + * report for more details. + * + * Most of the code here was lifed from various other Mesa xdemos. + */ + +static void +draw(void) +{ + glViewport(0, 0, 300, 300); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0); + glMatrixMode(GL_MODELVIEW); + + glShadeModel(GL_FLAT); + glClearColor(0.5, 0.5, 0.5, 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + /* draw blue quad */ + glLoadIdentity(); + glColor3f(0.3, 0.3, 1.0); + glPushMatrix(); + glRotatef(0, 0, 0, 1); + glBegin(GL_POLYGON); + glVertex2f(-0.5, -0.25); + glVertex2f( 0.5, -0.25); + glVertex2f( 0.5, 0.25); + glVertex2f(-0.5, 0.25); + glEnd(); + glPopMatrix();} + + +/* + * Create an RGB, double-buffered window. + * Return the window and context handles. + */ +static void +make_window( const char * dpyName, const char *name, + int x, int y, int width, int height, + Display **dpyRet, Window *winRet, GLXContext *ctxRet) +{ + 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; + Window win; + GLXContext ctx; + XVisualInfo *visinfo; + Display *dpy; + + dpy = XOpenDisplay(dpyName); + if (!dpy) { + printf("Error: couldn't open display %s\n", dpyName); + exit(1); + } + + *dpyRet = dpy; + scrnum = DefaultScreen( dpy ); + root = RootWindow( dpy, scrnum ); + + visinfo = glXChooseVisual( dpy, scrnum, attrib ); + if (!visinfo) { + printf("Error: couldn't get an RGB, Double-buffered visual\n"); + exit(1); + } + + /* 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 ); + + /* set hints and properties */ + { + XSizeHints sizehints; + sizehints.x = x; + sizehints.y = y; + 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) { + printf("Error: glXCreateContext failed\n"); + exit(1); + } + + XFree(visinfo); + + *winRet = win; + *ctxRet = ctx; +} + + +static void +destroy_window( Display *dpy, Window win, GLXContext ctx ) +{ + glXMakeCurrent(dpy, None, NULL); + glXDestroyContext(dpy, ctx); + XDestroyWindow(dpy, win); + XCloseDisplay(dpy); +} + + +int +main(int argc, char *argv[]) +{ + Display *dpy; + Window win; + GLXContext ctx; + char *dpyName = ":0"; + int i; + + for (i = 1; i < argc; i++) { + if (strcmp(argv[i], "-display") == 0) { + dpyName = argv[i+1]; + i++; + } + } + + printf("If this program segfaults, then Mesa bug #508473 is probably " + "back.\n"); + make_window(dpyName, "Open-close-open", 0, 0, 300, 300, &dpy, &win, &ctx); + XMapWindow(dpy, win); + glXMakeCurrent(dpy, win, ctx); + + draw(); + glXSwapBuffers(dpy, win); + sleep(2); + + destroy_window(dpy, win, ctx); + + make_window(dpyName, "Open-close-open", 0, 0, 300, 300, &dpy, &win, &ctx); + XMapWindow(dpy, win); + glXMakeCurrent(dpy, win, ctx); + destroy_window(dpy, win, ctx); + + return 0; +} |