From fe8485966cffc0cfb05d2bb336f17746f77a91e1 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Fri, 19 Oct 2012 14:29:04 -0700 Subject: glx: Sanity check the various GLX extension strings that an app can query Signed-off-by: Ian Romanick Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=56057 --- tests/glx/CMakeLists.gl.txt | 2 + tests/glx/glx-string-sanity.c | 187 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 189 insertions(+) create mode 100644 tests/glx/glx-string-sanity.c (limited to 'tests/glx') diff --git a/tests/glx/CMakeLists.gl.txt b/tests/glx/CMakeLists.gl.txt index 0eac8ce8..e75e4929 100644 --- a/tests/glx/CMakeLists.gl.txt +++ b/tests/glx/CMakeLists.gl.txt @@ -66,6 +66,8 @@ IF(PIGLIT_BUILD_GLX_TESTS) piglit_add_executable (glx-copy-sub-buffer glx-copy-sub-buffer.c) piglit_add_executable (glx-query-drawable glx-query-drawable.c) + + piglit_add_executable (glx-string-sanity glx-string-sanity.c) ENDIF(PIGLIT_BUILD_GLX_TESTS) # vim: ft=cmake: diff --git a/tests/glx/glx-string-sanity.c b/tests/glx/glx-string-sanity.c new file mode 100644 index 00000000..bc666653 --- /dev/null +++ b/tests/glx/glx-string-sanity.c @@ -0,0 +1,187 @@ +/* + * Copyright © 2011 Intel Corporation + * + * 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + */ + + +/** @file glx-string-sanity.c + * Sanity check the various GLX extension strings that application can query. + * + * This test reproduces Mesa bug #56057. + */ + +#include +#include "piglit-util-gl-common.h" +#include "piglit-glx-util.h" + +static const char * +eat_whitespace(const char *s) +{ + /* Page 17 of the GLX 1.4 spec says: + * + * "The string is zero-terminated and contains a space-seperated + * list of extension names." + * + * It doesn't say whitespace. It just says space. + */ + while (*s == ' ' && *s != '\0') + s++; + + return s; +} + +static const char * +eat_characters(const char *s) +{ + while (*s != ' ' && *s != '\0') + s++; + + return s; +} + +static const char * +find_extension(const char *haystack, const char *needle, size_t needle_length) +{ + while ((haystack = strstr(haystack, needle)) != NULL) { + if (haystack[needle_length] == '\0' + || haystack[needle_length] == ' ') + break; + } + + return haystack; +} + +static bool +validate_string(const char *string, const char *name) +{ + bool pass = true; + + while (*string != '\0') { + string = eat_whitespace(string); + if (*string == '\0') + break; + + if (strncmp("GLX_", string, 4) != 0) { + char junk[15]; + + /* Since the extension string may be very long, just + * log a few characters. + */ + strncpy(junk, string, sizeof(junk)); + junk[sizeof(junk) - 1] = '\0'; + fprintf(stderr, "%s contains junk: %s\n", name, junk); + pass = false; + } + + string = eat_characters(string); + } + + return pass; +} + +int +main(int argc, char **argv) +{ + bool pass = true; + const char *client_string; + const char *server_string; + const char *unified_string; + char *buf; + + Display *dpy = XOpenDisplay(NULL); + if (dpy == NULL) { + fprintf(stderr, "couldn't open display\n"); + piglit_report_result(PIGLIT_FAIL); + } + + /* First, make sure that all the strings have the correct format. + */ + server_string = glXQueryServerString(dpy, 0, GLX_EXTENSIONS); + pass = validate_string(server_string, "server extensions string") + && pass; + + client_string = glXGetClientString(dpy, GLX_EXTENSIONS); + pass = validate_string(client_string, "client extensions string") + && pass; + + unified_string = glXQueryExtensionsString(dpy, 0); + pass = validate_string(unified_string, "unified extensions string") + && pass; + + /* Now make sure that any string listed in both the server string and + * the client string is listed in the unified string. + * + * Also make sure that any string *not* listed in the client string is + * *not* listed in the unified string. Since there are several + * "client only" extensions (e.g., GLX_ARB_get_proc_address), it is + * valid for a string to not be in the server string when it is listed + * in the unified string. + */ + buf = malloc(strlen(server_string + 1)); + while (*server_string != '\0') { + const char *client; + const char *end; + size_t bytes; + + + server_string = eat_whitespace(server_string); + if (*server_string == '\0') + break; + + end = eat_characters(server_string); + + bytes = (size_t)(end - server_string); + memcpy(buf, server_string, bytes); + buf[bytes] = '\0'; + + /* Try to find the extension in the client extension list. + */ + client = find_extension(client_string, buf, bytes); + if (client != NULL) { + if (find_extension(unified_string, buf, bytes) == NULL) { + fprintf(stderr, + "%s found in both client and server " + "extension strings, but missing from " + "unified string.\n", + buf); + pass = false; + } + } else { + if (find_extension(unified_string, buf, bytes) != NULL) { + fprintf(stderr, + "%s not found in client extension " + "string, but found in unified " + "string.\n", + buf); + pass = false; + } + } + + server_string = end; + } + + free(buf); + + XCloseDisplay(dpy); + + piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL); + return 0; +} -- cgit v1.2.3