diff options
Diffstat (limited to 'src/glx/x11/dri_glx.c')
| -rw-r--r-- | src/glx/x11/dri_glx.c | 885 |
1 files changed, 344 insertions, 541 deletions
diff --git a/src/glx/x11/dri_glx.c b/src/glx/x11/dri_glx.c index 1cb3204d4c..21e07c1935 100644 --- a/src/glx/x11/dri_glx.c +++ b/src/glx/x11/dri_glx.c @@ -34,47 +34,260 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #ifdef GLX_DIRECT_RENDERING -#include <X11/Xlib.h> -#include <X11/extensions/Xfixes.h> -#include <X11/extensions/Xdamage.h> +#include <unistd.h> +#include <X11/Xlibint.h> +#include <X11/extensions/Xext.h> +#include <X11/extensions/extutil.h> #include "glheader.h" #include "glxclient.h" -#include "glcontextmodes.h" #include "xf86dri.h" #include "sarea.h" +#include <stdio.h> #include <dlfcn.h> +#include "dri_glx.h" #include <sys/types.h> -#include <sys/mman.h> -#include "xf86drm.h" -#include "dri_common.h" - -typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate; -typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate; - -struct __GLXDRIdisplayPrivateRec { - __GLXDRIdisplay base; - - /* - ** XFree86-DRI version information - */ - int driMajor; - int driMinor; - int driPatch; -}; - -struct __GLXDRIcontextPrivateRec { - __GLXDRIcontext base; - __DRIcontext *driContext; - XID hwContextID; - __GLXscreenConfigs *psc; -}; +#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 Mesa/configs/default with DRI_DRIVER_SEARCH_PATH */ +#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); + } +} + +/** + * Print error to stderr, unless LIBGL_DEBUG=="quiet". + */ +static void ErrorMessageF(const char *f, ...) +{ + va_list args; + const char *env; + + if ((env = getenv("LIBGL_DEBUG")) && !strstr(env, "quiet")) { + 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) +{ + void *glhandle = NULL; + 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; + } + } + + /* Attempt to make sure libGL symbols will be visible to the driver */ + glhandle = dlopen("libGL.so.1", RTLD_NOW | RTLD_GLOBAL); + + 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) + break; /* out of memory! */ + /* init the struct */ + driver->name = __glXstrdup(driverName); + if (!driver->name) { + Xfree(driver); + driver = NULL; + break; /* 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); + driver = NULL; + dlclose(handle); + continue; + } + driver->handle = handle; + /* put at head of linked list */ + driver->next = Drivers; + Drivers = driver; + break; + } + else { + ErrorMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror()); + } + } + + if (!driver) + ErrorMessageF("unable to load driver: %s_dri.so\n", driverName); + + if (glhandle) + dlclose(glhandle); + + return driver; +} + /* * 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 driGetDriverName(Display *dpy, int scrNum, char **driverName) +static Bool GetDriverName(Display *dpy, int scrNum, char **driverName) { int directCapable; Bool b; @@ -104,6 +317,25 @@ static Bool driGetDriverName(Display *dpy, int scrNum, char **driverName) 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. * @@ -113,7 +345,7 @@ static Bool driGetDriverName(Display *dpy, int scrNum, char **driverName) PUBLIC const char *glXGetScreenDriver (Display *dpy, int scrNum) { static char ret[32]; char *driverName; - if (driGetDriverName(dpy, scrNum, &driverName)) { + if (GetDriverName(dpy, scrNum, &driverName)) { int len; if (!driverName) return NULL; @@ -127,6 +359,7 @@ PUBLIC const char *glXGetScreenDriver (Display *dpy, int scrNum) { return NULL; } + /* * Exported function for obtaining a driver's option list (UTF-8 encoded XML). * @@ -138,532 +371,71 @@ PUBLIC const char *glXGetScreenDriver (Display *dpy, int scrNum) { * * Note: The driver remains opened after this function returns. */ -PUBLIC const char *glXGetDriverConfig (const char *driverName) -{ - void *handle = driOpenDriver (driverName); - if (handle) - return dlsym (handle, "__driConfigOptions"); +PUBLIC const char *glXGetDriverConfig (const char *driverName) { + __DRIdriver *driver = OpenDriver (driverName); + if (driver) + return dlsym (driver->handle, "__driConfigOptions"); else return NULL; } -#ifdef XDAMAGE_1_1_INTERFACE - -static GLboolean has_damage_post(Display *dpy) -{ - static GLboolean inited = GL_FALSE; - static GLboolean has_damage; - - if (!inited) { - int major, minor; - - if (XDamageQueryVersion(dpy, &major, &minor) && - major == 1 && minor >= 1) - { - has_damage = GL_TRUE; - } else { - has_damage = GL_FALSE; - } - inited = GL_TRUE; - } - - return has_damage; -} - -static void __glXReportDamage(__DRIdrawable *driDraw, - int x, int y, - drm_clip_rect_t *rects, int num_rects, - GLboolean front_buffer, - void *loaderPrivate) -{ - XRectangle *xrects; - XserverRegion region; - int i; - int x_off, y_off; - __GLXDRIdrawable *glxDraw = loaderPrivate; - __GLXscreenConfigs *psc = glxDraw->psc; - Display *dpy = psc->dpy; - Drawable drawable; - - if (!has_damage_post(dpy)) - return; - - if (front_buffer) { - x_off = x; - y_off = y; - drawable = RootWindow(dpy, psc->scr); - } else{ - x_off = 0; - y_off = 0; - drawable = glxDraw->xDrawable; - } - - xrects = malloc(sizeof(XRectangle) * num_rects); - if (xrects == NULL) - return; - - for (i = 0; i < num_rects; i++) { - xrects[i].x = rects[i].x1 + x_off; - xrects[i].y = rects[i].y1 + y_off; - xrects[i].width = rects[i].x2 - rects[i].x1; - xrects[i].height = rects[i].y2 - rects[i].y1; - } - region = XFixesCreateRegion(dpy, xrects, num_rects); - free(xrects); - XDamageAdd(dpy, drawable, region); - XFixesDestroyRegion(dpy, region); -} - -static const __DRIdamageExtension damageExtension = { - { __DRI_DAMAGE, __DRI_DAMAGE_VERSION }, - __glXReportDamage, -}; - -#endif - -static GLboolean -__glXDRIGetDrawableInfo(__DRIdrawable *drawable, - unsigned int *index, unsigned int *stamp, - int *X, int *Y, int *W, int *H, - int *numClipRects, drm_clip_rect_t ** pClipRects, - int *backX, int *backY, - int *numBackClipRects, drm_clip_rect_t **pBackClipRects, - void *loaderPrivate) -{ - __GLXDRIdrawable *glxDraw = loaderPrivate; - __GLXscreenConfigs *psc = glxDraw->psc; - Display *dpy = psc->dpy; - - return XF86DRIGetDrawableInfo(dpy, psc->scr, glxDraw->drawable, - index, stamp, X, Y, W, H, - numClipRects, pClipRects, - backX, backY, - numBackClipRects, pBackClipRects); -} - -static const __DRIgetDrawableInfoExtension getDrawableInfoExtension = { - { __DRI_GET_DRAWABLE_INFO, __DRI_GET_DRAWABLE_INFO_VERSION }, - __glXDRIGetDrawableInfo -}; - -static const __DRIextension *loader_extensions[] = { - &systemTimeExtension.base, - &getDrawableInfoExtension.base, -#ifdef XDAMAGE_1_1_INTERFACE - &damageExtension.base, -#endif - NULL -}; -#ifndef GLX_USE_APPLEGL - -/** - * Perform the required libGL-side initialization and call the client-side - * driver's \c __driCreateNewScreen function. - * - * \param dpy Display pointer. - * \param scrn Screen number on the display. - * \param psc DRI screen information. - * \param driDpy DRI display information. - * \param createNewScreen Pointer to the client-side driver's - * \c __driCreateNewScreen function. - * \returns A pointer to the \c __DRIscreenPrivate structure returned by - * the client-side driver on success, or \c NULL on failure. +/* Called from __glXFreeDisplayPrivate. */ -static void * -CallCreateNewScreen(Display *dpy, int scrn, __GLXscreenConfigs *psc, - __GLXDRIdisplayPrivate * driDpy) -{ - void *psp = NULL; - drm_handle_t hSAREA; - drmAddress pSAREA = MAP_FAILED; - char *BusID; - __DRIversion ddx_version; - __DRIversion dri_version; - __DRIversion drm_version; - __DRIframebuffer framebuffer; - int fd = -1; - int status; - - drm_magic_t magic; - drmVersionPtr version; - int newlyopened; - char *driverName; - drm_handle_t hFB; - int junk; - const __DRIconfig **driver_configs; - - /* DRI protocol version. */ - dri_version.major = driDpy->driMajor; - dri_version.minor = driDpy->driMinor; - dri_version.patch = driDpy->driPatch; - - framebuffer.base = MAP_FAILED; - framebuffer.dev_priv = NULL; - - if (!XF86DRIOpenConnection(dpy, scrn, &hSAREA, &BusID)) { - fprintf(stderr, "libGL error: XF86DRIOpenConnection failed\n"); - goto handle_error; - } - - fd = drmOpenOnce(NULL, BusID, &newlyopened); - - Xfree(BusID); /* No longer needed */ - - if (fd < 0) { - fprintf(stderr, "libGL error: drmOpenOnce failed (%s)\n", - strerror(-fd)); - goto handle_error; - } - - if (drmGetMagic(fd, &magic)) { - fprintf(stderr, "libGL error: drmGetMagic failed\n"); - goto handle_error; - } - - version = drmGetVersion(fd); - if (version) { - drm_version.major = version->version_major; - drm_version.minor = version->version_minor; - drm_version.patch = version->version_patchlevel; - drmFreeVersion(version); - } - else { - drm_version.major = -1; - drm_version.minor = -1; - drm_version.patch = -1; - } - - if (newlyopened && !XF86DRIAuthConnection(dpy, scrn, magic)) { - fprintf(stderr, "libGL error: XF86DRIAuthConnection failed\n"); - goto handle_error; - } - - /* Get device name (like "tdfx") and the ddx version numbers. - * We'll check the version in each DRI driver's "createNewScreen" - * function. */ - if (!XF86DRIGetClientDriverName(dpy, scrn, - &ddx_version.major, - &ddx_version.minor, - &ddx_version.patch, - &driverName)) { - fprintf(stderr, "libGL error: XF86DRIGetClientDriverName failed\n"); - goto handle_error; - } - - Xfree(driverName); /* No longer needed. */ - - /* - * Get device-specific info. pDevPriv will point to a struct - * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) that - * has information about the screen size, depth, pitch, ancilliary - * buffers, DRM mmap handles, etc. - */ - if (!XF86DRIGetDeviceInfo(dpy, scrn, &hFB, &junk, - &framebuffer.size, &framebuffer.stride, - &framebuffer.dev_priv_size, &framebuffer.dev_priv)) { - fprintf(stderr, "libGL error: XF86DRIGetDeviceInfo failed"); - goto handle_error; - } - - framebuffer.width = DisplayWidth(dpy, scrn); - framebuffer.height = DisplayHeight(dpy, scrn); - - /* Map the framebuffer region. */ - status = drmMap(fd, hFB, framebuffer.size, - (drmAddressPtr)&framebuffer.base); - if (status != 0) { - fprintf(stderr, "libGL error: drmMap of framebuffer failed (%s)", - strerror(-status)); - goto handle_error; - } - - /* Map the SAREA region. Further mmap regions may be setup in - * each DRI driver's "createNewScreen" function. - */ - status = drmMap(fd, hSAREA, SAREA_MAX, &pSAREA); - if (status != 0) { - fprintf(stderr, "libGL error: drmMap of SAREA failed (%s)", - strerror(-status)); - goto handle_error; - } - - psp = (*psc->legacy->createNewScreen)(scrn, - &ddx_version, - &dri_version, - &drm_version, - &framebuffer, - pSAREA, - fd, - loader_extensions, - &driver_configs, - psc); - - if (psp == NULL) { - fprintf(stderr, "libGL error: Calling driver entry point failed"); - goto handle_error; - } - - psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs); - psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs); - - return psp; - - handle_error: - if (pSAREA != MAP_FAILED) - drmUnmap(pSAREA, SAREA_MAX); - - if (framebuffer.base != MAP_FAILED) - drmUnmap((drmAddress)framebuffer.base, framebuffer.size); - - if (framebuffer.dev_priv != NULL) - Xfree(framebuffer.dev_priv); - - if (fd >= 0) - drmCloseOnce(fd); - - XF86DRICloseConnection(dpy, scrn); - - fprintf(stderr, "libGL error: reverting to (slow) indirect rendering\n"); - - return NULL; -} - -#else /* !GLX_USE_APPLEGL */ - -static void * -CallCreateNewScreen(Display *dpy, int scrn, __GLXscreenConfigs *psc, - __GLXDRIdisplayPrivate * driDpy) +static void driDestroyDisplay(Display *dpy, void *private) { - return NULL; -} - -#endif /* !GLX_USE_APPLEGL */ - -static void driDestroyContext(__GLXDRIcontext *context, - __GLXscreenConfigs *psc, Display *dpy) -{ - __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context; - - (*psc->core->destroyContext)(pcp->driContext); - - XF86DRIDestroyContext(psc->dpy, psc->scr, pcp->hwContextID); -} - -static Bool driBindContext(__GLXDRIcontext *context, - __GLXDRIdrawable *draw, __GLXDRIdrawable *read) -{ - __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context; - const __DRIcoreExtension *core = pcp->psc->core; - - return (*core->bindContext)(pcp->driContext, - draw->driDrawable, - read->driDrawable); -} - -static void driUnbindContext(__GLXDRIcontext *context) -{ - __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context; - const __DRIcoreExtension *core = pcp->psc->core; - - (*core->unbindContext)(pcp->driContext); -} - -static __GLXDRIcontext *driCreateContext(__GLXscreenConfigs *psc, - const __GLcontextModes *mode, - GLXContext gc, - GLXContext shareList, int renderType) -{ - __GLXDRIcontextPrivate *pcp, *pcp_shared; - drm_context_t hwContext; - __DRIcontext *shared = NULL; - __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode; - - if (!psc || !psc->driScreen) - return NULL; - - if (shareList) { - pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext; - shared = pcp_shared->driContext; - } - - pcp = Xmalloc(sizeof *pcp); - if (pcp == NULL) - return NULL; - - pcp->psc = psc; - if (!XF86DRICreateContextWithConfig(psc->dpy, psc->scr, - mode->visualID, - &pcp->hwContextID, &hwContext)) { - Xfree(pcp); - return NULL; + __DRIdisplayPrivate *pdpyp = (__DRIdisplayPrivate *)private; + + if (pdpyp) { + const int numScreens = ScreenCount(dpy); + int i; + for (i = 0; i < numScreens; i++) { + if (pdpyp->libraryHandles[i]) { + __DRIdriver *driver, *prev; + + /* Remove driver from Drivers list */ + for (prev = NULL, driver = Drivers; driver; + prev = driver, driver = driver->next) { + if (driver->handle == pdpyp->libraryHandles[i]) { + if (prev) + prev->next = driver->next; + else + Drivers = driver->next; + + Xfree(driver->name); + Xfree(driver); + break; + } + } + + dlclose(pdpyp->libraryHandles[i]); + } + } + Xfree(pdpyp->libraryHandles); + Xfree(pdpyp); } - - pcp->driContext = - (*psc->legacy->createNewContext)(psc->__driScreen, - config->driConfig, - renderType, - shared, - hwContext, - pcp); - if (pcp->driContext == NULL) { - XF86DRIDestroyContext(psc->dpy, psc->scr, pcp->hwContextID); - Xfree(pcp); - return NULL; - } - - pcp->base.destroyContext = driDestroyContext; - pcp->base.bindContext = driBindContext; - pcp->base.unbindContext = driUnbindContext; - - return &pcp->base; } -static void driDestroyDrawable(__GLXDRIdrawable *pdraw) -{ - __GLXscreenConfigs *psc = pdraw->psc; - - (*psc->core->destroyDrawable)(pdraw->driDrawable); - XF86DRIDestroyDrawable(psc->dpy, psc->scr, pdraw->drawable); - Xfree(pdraw); -} - -static __GLXDRIdrawable *driCreateDrawable(__GLXscreenConfigs *psc, - XID xDrawable, - GLXDrawable drawable, - const __GLcontextModes *modes) -{ - __GLXDRIdrawable *pdraw; - drm_drawable_t hwDrawable; - void *empty_attribute_list = NULL; - __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes; - - /* Old dri can't handle GLX 1.3+ drawable constructors. */ - if (xDrawable != drawable) - return NULL; - - pdraw = Xmalloc(sizeof(*pdraw)); - if (!pdraw) - return NULL; - - pdraw->drawable = drawable; - pdraw->psc = psc; - - if (!XF86DRICreateDrawable(psc->dpy, psc->scr, drawable, &hwDrawable)) - return NULL; - - /* Create a new drawable */ - pdraw->driDrawable = - (*psc->legacy->createNewDrawable)(psc->__driScreen, - config->driConfig, - hwDrawable, - GLX_WINDOW_BIT, - empty_attribute_list, - pdraw); - - if (!pdraw->driDrawable) { - XF86DRIDestroyDrawable(psc->dpy, psc->scr, drawable); - Xfree(pdraw); - return NULL; - } - - pdraw->destroyDrawable = driDestroyDrawable; - - return pdraw; -} - -static void driDestroyScreen(__GLXscreenConfigs *psc) -{ - /* Free the direct rendering per screen data */ - if (psc->__driScreen) - (*psc->core->destroyScreen)(psc->__driScreen); - psc->__driScreen = NULL; - if (psc->driver) - dlclose(psc->driver); -} - -static __GLXDRIscreen *driCreateScreen(__GLXscreenConfigs *psc, int screen, - __GLXdisplayPrivate *priv) -{ - __GLXDRIdisplayPrivate *pdp; - __GLXDRIscreen *psp; - const __DRIextension **extensions; - char *driverName; - int i; - - psp = Xmalloc(sizeof *psp); - if (psp == NULL) - return NULL; - - /* Initialize per screen dynamic client GLX extensions */ - psc->ext_list_first_time = GL_TRUE; - - if (!driGetDriverName(priv->dpy, screen, &driverName)) { - Xfree(psp); - return NULL; - } - - psc->driver = driOpenDriver(driverName); - Xfree(driverName); - if (psc->driver == NULL) { - Xfree(psp); - return NULL; - } - - extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS); - if (extensions == NULL) { - ErrorMessageF("driver exports no extensions (%s)\n", dlerror()); - Xfree(psp); - return NULL; - } - - for (i = 0; extensions[i]; i++) { - if (strcmp(extensions[i]->name, __DRI_CORE) == 0) - psc->core = (__DRIcoreExtension *) extensions[i]; - if (strcmp(extensions[i]->name, __DRI_LEGACY) == 0) - psc->legacy = (__DRIlegacyExtension *) extensions[i]; - } - - if (psc->core == NULL || psc->legacy == NULL) { - Xfree(psp); - return NULL; - } - - pdp = (__GLXDRIdisplayPrivate *) priv->driDisplay; - psc->__driScreen = - CallCreateNewScreen(psc->dpy, screen, psc, pdp); - if (psc->__driScreen == NULL) { - dlclose(psc->driver); - Xfree(psp); - return NULL; - } - - driBindExtensions(psc); - - psp->destroyScreen = driDestroyScreen; - psp->createContext = driCreateContext; - psp->createDrawable = driCreateDrawable; - - return psp; -} - -/* Called from __glXFreeDisplayPrivate. - */ -static void driDestroyDisplay(__GLXDRIdisplay *dpy) -{ - Xfree(dpy); -} /* * Allocate, initialize and return a __DRIdisplayPrivate object. * This is called from __glXInitialize() when we are given a new * display pointer. */ -_X_HIDDEN __GLXDRIdisplay *driCreateDisplay(Display *dpy) +void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp) { - __GLXDRIdisplayPrivate *pdpyp; + 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; @@ -673,7 +445,7 @@ _X_HIDDEN __GLXDRIdisplay *driCreateDisplay(Display *dpy) return NULL; } - pdpyp = Xmalloc(sizeof *pdpyp); + pdpyp = (__DRIdisplayPrivate *)Xmalloc(sizeof(__DRIdisplayPrivate)); if (!pdpyp) { return NULL; } @@ -682,10 +454,41 @@ _X_HIDDEN __GLXDRIdisplay *driCreateDisplay(Display *dpy) pdpyp->driMinor = minor; pdpyp->driPatch = patch; - pdpyp->base.destroyDisplay = driDestroyDisplay; - pdpyp->base.createScreen = driCreateScreen; + 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 &pdpyp->base; + return (void *)pdpyp; } #endif /* GLX_DIRECT_RENDERING */ |