diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/glx/x11/dri_glx.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/glx/x11/dri_glx.c | 461 |
1 files changed, 0 insertions, 461 deletions
diff --git a/nx-X11/extras/Mesa/src/glx/x11/dri_glx.c b/nx-X11/extras/Mesa/src/glx/x11/dri_glx.c deleted file mode 100644 index 516ca508c..000000000 --- a/nx-X11/extras/Mesa/src/glx/x11/dri_glx.c +++ /dev/null @@ -1,461 +0,0 @@ -/************************************************************************** - -Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. -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, sub license, 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 NON-INFRINGEMENT. -IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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. - -**************************************************************************/ -/* $XFree86: xc/lib/GL/dri/dri_glx.c,v 1.14 2003/07/16 00:54:00 dawes Exp $ */ - -/* - * Authors: - * Kevin E. Martin <kevin@precisioninsight.com> - * Brian Paul <brian@precisioninsight.com> - * - */ - -#ifdef GLX_DIRECT_RENDERING - -#include <unistd.h> -#include <X11/Xlibint.h> -#include <X11/extensions/Xext.h> -#include <X11/extensions/extutil.h> -#include "glxclient.h" -#include "xf86dri.h" -#include "sarea.h" -#include <stdio.h> -#include <dlfcn.h> -#include "dri_glx.h" -#include <sys/types.h> -#include <stdarg.h> - -#ifndef RTLD_NOW -#define RTLD_NOW 0 -#endif -#ifndef RTLD_GLOBAL -#define RTLD_GLOBAL 0 -#endif - - -#ifndef DEFAULT_DRIVER_DIR -/* this is normally defined in the Imakefile */ -#define DEFAULT_DRIVER_DIR "/usr/X11R6/lib/modules/dri" -#endif - -static __DRIdriver *Drivers = NULL; - - -/* - * printf wrappers - */ - -static void InfoMessageF(const char *f, ...) -{ - va_list args; - const char *env; - - if ((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) { - fprintf(stderr, "libGL: "); - va_start(args, f); - vfprintf(stderr, f, args); - va_end(args); - } -} - -static void ErrorMessageF(const char *f, ...) -{ - va_list args; - - if (getenv("LIBGL_DEBUG")) { - fprintf(stderr, "libGL error: "); - va_start(args, f); - vfprintf(stderr, f, args); - va_end(args); - } -} - - -/** - * Extract the ith directory path out of a colon-separated list of paths. No - * more than \c dirLen characters, including the terminating \c NUL, will be - * written to \c dir. - * - * \param index Index of path to extract (starting at zero) - * \param paths The colon-separated list of paths - * \param dirLen Maximum length of result to store in \c dir - * \param dir Buffer to hold the extracted directory path - * - * \returns - * The number of characters that would have been written to \c dir had there - * been enough room. This does not include the terminating \c NUL. When - * extraction fails, zero will be returned. - * - * \todo - * It seems like this function could be rewritten to use \c strchr. - */ -static size_t -ExtractDir(int index, const char *paths, int dirLen, char *dir) -{ - int i, len; - const char *start, *end; - - /* find ith colon */ - start = paths; - i = 0; - while (i < index) { - if (*start == ':') { - i++; - start++; - } - else if (*start == 0) { - /* end of string and couldn't find ith colon */ - dir[0] = 0; - return 0; - } - else { - start++; - } - } - - while (*start == ':') - start++; - - /* find next colon, or end of string */ - end = start + 1; - while (*end != ':' && *end != 0) { - end++; - } - - /* copy string between <start> and <end> into result string */ - len = end - start; - if (len > dirLen - 1) - len = dirLen - 1; - strncpy(dir, start, len); - dir[len] = 0; - - return( end - start ); -} - - -/** - * Versioned name of the expected \c __driCreateNewScreen function. - * - * The version of the last incompatible loader/driver inteface change is - * appended to the name of the \c __driCreateNewScreen function. This - * prevents loaders from trying to load drivers that are too old. - * - * \todo - * Create a macro or something so that this is automatically updated. - */ -static const char createNewScreenName[] = "__driCreateNewScreen_20050727"; - - -/** - * Try to \c dlopen the named driver. - * - * This function adds the "_dri.so" suffix to the driver name and searches the - * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in - * order to find the driver. - * - * \param driverName - a name like "tdfx", "i810", "mga", etc. - * - * \returns - * A handle from \c dlopen, or \c NULL if driver file not found. - */ -static __DRIdriver *OpenDriver(const char *driverName) -{ - char *libPaths = NULL; - char libDir[1000]; - int i; - __DRIdriver *driver; - - /* First, search Drivers list to see if we've already opened this driver */ - for (driver = Drivers; driver; driver = driver->next) { - if (strcmp(driver->name, driverName) == 0) { - /* found it */ - return driver; - } - } - - if (geteuid() == getuid()) { - /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */ - libPaths = getenv("LIBGL_DRIVERS_PATH"); - if (!libPaths) - libPaths = getenv("LIBGL_DRIVERS_DIR"); /* deprecated */ - } - if (!libPaths) - libPaths = DEFAULT_DRIVER_DIR; - - for ( i = 0 ; ExtractDir(i, libPaths, 1000, libDir) != 0 ; i++ ) { - char realDriverName[200]; - void *handle = NULL; - - - /* If TLS support is enabled, try to open the TLS version of the driver - * binary first. If that fails, try the non-TLS version. - */ -#ifdef GLX_USE_TLS - snprintf(realDriverName, 200, "%s/tls/%s_dri.so", libDir, driverName); - InfoMessageF("OpenDriver: trying %s\n", realDriverName); - handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL); -#endif - - if ( handle == NULL ) { - snprintf(realDriverName, 200, "%s/%s_dri.so", libDir, driverName); - InfoMessageF("OpenDriver: trying %s\n", realDriverName); - handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL); - } - - if ( handle != NULL ) { - /* allocate __DRIdriver struct */ - driver = (__DRIdriver *) Xmalloc(sizeof(__DRIdriver)); - if (!driver) - return NULL; /* out of memory! */ - /* init the struct */ - driver->name = __glXstrdup(driverName); - if (!driver->name) { - Xfree(driver); - return NULL; /* out of memory! */ - } - - driver->createNewScreenFunc = (PFNCREATENEWSCREENFUNC) - dlsym(handle, createNewScreenName); - - if ( driver->createNewScreenFunc == NULL ) { - /* If the driver doesn't have this symbol then something's - * really, really wrong. - */ - ErrorMessageF("%s not defined in %s_dri.so!\n" - "Your driver may be too old for this libGL.\n", - createNewScreenName, driverName); - Xfree(driver); - dlclose(handle); - continue; - } - driver->handle = handle; - /* put at head of linked list */ - driver->next = Drivers; - Drivers = driver; - return driver; - } - else { - ErrorMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror()); - } - } - - ErrorMessageF("unable to find driver: %s_dri.so\n", driverName); - return NULL; -} - - -/* - * Given a display pointer and screen number, determine the name of - * the DRI driver for the screen. (I.e. "r128", "tdfx", etc). - * Return True for success, False for failure. - */ -static Bool GetDriverName(Display *dpy, int scrNum, char **driverName) -{ - int directCapable; - Bool b; - int driverMajor, driverMinor, driverPatch; - - *driverName = NULL; - - if (!XF86DRIQueryDirectRenderingCapable(dpy, scrNum, &directCapable)) { - ErrorMessageF("XF86DRIQueryDirectRenderingCapable failed\n"); - return False; - } - if (!directCapable) { - ErrorMessageF("XF86DRIQueryDirectRenderingCapable returned false\n"); - return False; - } - - b = XF86DRIGetClientDriverName(dpy, scrNum, &driverMajor, &driverMinor, - &driverPatch, driverName); - if (!b) { - ErrorMessageF("Cannot determine driver name for screen %d\n", scrNum); - return False; - } - - InfoMessageF("XF86DRIGetClientDriverName: %d.%d.%d %s (screen %d)\n", - driverMajor, driverMinor, driverPatch, *driverName, scrNum); - - return True; -} - - -/* - * Given a display pointer and screen number, return a __DRIdriver handle. - * Return NULL if anything goes wrong. - */ -__DRIdriver *driGetDriver(Display *dpy, int scrNum) -{ - char *driverName; - if (GetDriverName(dpy, scrNum, &driverName)) { - __DRIdriver *ret; - ret = OpenDriver(driverName); - if (driverName) - Xfree(driverName); - return ret; - } - return NULL; -} - - -/* - * Exported function for querying the DRI driver for a given screen. - * - * The returned char pointer points to a static array that will be - * overwritten by subsequent calls. - */ -const char *glXGetScreenDriver (Display *dpy, int scrNum) { - static char ret[32]; - char *driverName; - if (GetDriverName(dpy, scrNum, &driverName)) { - int len; - if (!driverName) - return NULL; - len = strlen (driverName); - if (len >= 31) - return NULL; - memcpy (ret, driverName, len+1); - Xfree(driverName); - return ret; - } - return NULL; -} - - -/* - * Exported function for obtaining a driver's option list (UTF-8 encoded XML). - * - * The returned char pointer points directly into the driver. Therefore - * it should be treated as a constant. - * - * If the driver was not found or does not support configuration NULL is - * returned. - * - * Note: The driver remains opened after this function returns. - */ -const char *glXGetDriverConfig (const char *driverName) { - __DRIdriver *driver = OpenDriver (driverName); - if (driver) - return dlsym (driver->handle, "__driConfigOptions"); - else - return NULL; -} - - -/* This function isn't currently used. - */ -static void driDestroyDisplay(Display *dpy, void *private) -{ - __DRIdisplayPrivate *pdpyp = (__DRIdisplayPrivate *)private; - - if (pdpyp) { - const int numScreens = ScreenCount(dpy); - int i; - for (i = 0; i < numScreens; i++) { - if (pdpyp->libraryHandles[i]) - dlclose(pdpyp->libraryHandles[i]); - } - Xfree(pdpyp->libraryHandles); - Xfree(pdpyp); - } -} - - -/* - * Allocate, initialize and return a __DRIdisplayPrivate object. - * This is called from __glXInitialize() when we are given a new - * display pointer. - */ -void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp) -{ - const int numScreens = ScreenCount(dpy); - __DRIdisplayPrivate *pdpyp; - int eventBase, errorBase; - int major, minor, patch; - int scrn; - - /* Initialize these fields to NULL in case we fail. - * If we don't do this we may later get segfaults trying to free random - * addresses when the display is closed. - */ - pdisp->private = NULL; - pdisp->destroyDisplay = NULL; - - if (!XF86DRIQueryExtension(dpy, &eventBase, &errorBase)) { - return NULL; - } - - if (!XF86DRIQueryVersion(dpy, &major, &minor, &patch)) { - return NULL; - } - - pdpyp = (__DRIdisplayPrivate *)Xmalloc(sizeof(__DRIdisplayPrivate)); - if (!pdpyp) { - return NULL; - } - - pdpyp->driMajor = major; - pdpyp->driMinor = minor; - pdpyp->driPatch = patch; - - pdisp->destroyDisplay = driDestroyDisplay; - - /* allocate array of pointers to createNewScreen funcs */ - pdisp->createNewScreen = (PFNCREATENEWSCREENFUNC *) - Xmalloc(numScreens * sizeof(void *)); - if (!pdisp->createNewScreen) { - Xfree(pdpyp); - return NULL; - } - - /* allocate array of library handles */ - pdpyp->libraryHandles = (void **) Xmalloc(numScreens * sizeof(void*)); - if (!pdpyp->libraryHandles) { - Xfree(pdisp->createNewScreen); - Xfree(pdpyp); - return NULL; - } - - /* dynamically discover DRI drivers for all screens, saving each - * driver's "__driCreateScreen" function pointer. That's the bootstrap - * entrypoint for all DRI drivers. - */ - for (scrn = 0; scrn < numScreens; scrn++) { - __DRIdriver *driver = driGetDriver(dpy, scrn); - if (driver) { - pdisp->createNewScreen[scrn] = driver->createNewScreenFunc; - pdpyp->libraryHandles[scrn] = driver->handle; - } - else { - pdisp->createNewScreen[scrn] = NULL; - pdpyp->libraryHandles[scrn] = NULL; - } - } - - return (void *)pdpyp; -} - -#endif /* GLX_DIRECT_RENDERING */ |