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authorKristian Høgsberg <krh@bitplanet.net>2010-02-09 09:58:36 -0500
committerKristian Høgsberg <krh@bitplanet.net>2010-02-09 09:58:36 -0500
commit6e8897ff9f90601ebf6eed500ad942c11b54d1f7 (patch)
tree5a90891cfbccbf5c03f792abb2a2407c82872778 /src/glx/dri_glx.c
parent538539d8791e5b3b1ea2e95473b589934d94497e (diff)
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Retire miniglx and move the actual glx code up to src/glx
Diffstat (limited to 'src/glx/dri_glx.c')
-rw-r--r--src/glx/dri_glx.c751
1 files changed, 751 insertions, 0 deletions
diff --git a/src/glx/dri_glx.c b/src/glx/dri_glx.c
new file mode 100644
index 0000000..0ff53c3
--- /dev/null
+++ b/src/glx/dri_glx.c
@@ -0,0 +1,751 @@
+/**************************************************************************
+
+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.
+
+**************************************************************************/
+
+/*
+ * Authors:
+ * Kevin E. Martin <kevin@precisioninsight.com>
+ * Brian Paul <brian@precisioninsight.com>
+ *
+ */
+
+#ifdef GLX_DIRECT_RENDERING
+
+#include <X11/Xlib.h>
+#include <X11/extensions/Xfixes.h>
+#include <X11/extensions/Xdamage.h>
+#include "glxclient.h"
+#include "xf86dri.h"
+#include "dri2.h"
+#include "sarea.h"
+#include <dlfcn.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;
+};
+
+/*
+ * 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)
+{
+ int directCapable;
+ Bool b;
+ int event, error;
+ int driverMajor, driverMinor, driverPatch;
+
+ *driverName = NULL;
+
+ if (XF86DRIQueryExtension(dpy, &event, &error)) { /* DRI1 */
+ 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;
+ }
+ else if (DRI2QueryExtension(dpy, &event, &error)) { /* DRI2 */
+ char *dev;
+ Bool ret = DRI2Connect(dpy, RootWindow(dpy, scrNum), driverName, &dev);
+
+ if (ret)
+ Xfree(dev);
+
+ return ret;
+ }
+
+ return False;
+}
+
+/*
+ * 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.
+ */
+PUBLIC const char *
+glXGetScreenDriver(Display * dpy, int scrNum)
+{
+ static char ret[32];
+ char *driverName;
+ if (driGetDriverName(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.
+ */
+PUBLIC const char *
+glXGetDriverConfig(const char *driverName)
+{
+ void *handle = driOpenDriver(driverName);
+ if (handle)
+ return dlsym(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
+};
+
+/**
+ * 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 __DRIscreen structure returned by
+ * the client-side driver on success, or \c NULL on failure.
+ */
+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;
+ __GLcontextModes *visual;
+
+ /* 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)) {
+ ErrorMessageF("XF86DRIOpenConnection failed\n");
+ goto handle_error;
+ }
+
+ fd = drmOpenOnce(NULL, BusID, &newlyopened);
+
+ Xfree(BusID); /* No longer needed */
+
+ if (fd < 0) {
+ ErrorMessageF("drmOpenOnce failed (%s)\n", strerror(-fd));
+ goto handle_error;
+ }
+
+ if (drmGetMagic(fd, &magic)) {
+ ErrorMessageF("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)) {
+ ErrorMessageF("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)) {
+ ErrorMessageF("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)) {
+ ErrorMessageF("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) {
+ ErrorMessageF("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) {
+ ErrorMessageF("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) {
+ ErrorMessageF("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);
+
+ psc->driver_configs = driver_configs;
+
+ /* Visuals with depth != screen depth are subject to automatic compositing
+ * in the X server, so DRI1 can't render to them properly. Mark them as
+ * non-conformant to prevent apps from picking them up accidentally.
+ */
+ for (visual = psc->visuals; visual; visual = visual->next) {
+ XVisualInfo template;
+ XVisualInfo *visuals;
+ int num_visuals;
+ long mask;
+
+ template.visualid = visual->visualID;
+ mask = VisualIDMask;
+ visuals = XGetVisualInfo(dpy, mask, &template, &num_visuals);
+
+ if (visuals) {
+ if (num_visuals > 0 && visuals->depth != DefaultDepth(dpy, scrn))
+ visual->visualRating = GLX_NON_CONFORMANT_CONFIG;
+
+ XFree(visuals);
+ }
+ }
+
+ 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);
+
+ ErrorMessageF("reverting to software direct rendering\n");
+
+ return NULL;
+}
+
+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);
+ Xfree(pcp);
+}
+
+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;
+ }
+
+ 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)) {
+ Xfree(pdraw);
+ 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 int64_t
+driSwapBuffers(__GLXDRIdrawable * pdraw, int64_t unused1, int64_t unused2,
+ int64_t unused3)
+{
+ (*pdraw->psc->core->swapBuffers) (pdraw->driDrawable);
+ return 0;
+}
+
+static void
+driCopySubBuffer(__GLXDRIdrawable * pdraw,
+ int x, int y, int width, int height)
+{
+ (*pdraw->psc->driCopySubBuffer->copySubBuffer) (pdraw->driDrawable,
+ x, y, width, height);
+}
+
+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 = Xcalloc(1, 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);
+ driBindCommonExtensions(psc);
+
+ if (psc->driCopySubBuffer)
+ psp->copySubBuffer = driCopySubBuffer;
+
+ psp->destroyScreen = driDestroyScreen;
+ psp->createContext = driCreateContext;
+ psp->createDrawable = driCreateDrawable;
+ psp->swapBuffers = driSwapBuffers;
+ psp->waitX = NULL;
+ psp->waitGL = NULL;
+
+ 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)
+{
+ __GLXDRIdisplayPrivate *pdpyp;
+ int eventBase, errorBase;
+ int major, minor, patch;
+
+ if (!XF86DRIQueryExtension(dpy, &eventBase, &errorBase)) {
+ return NULL;
+ }
+
+ if (!XF86DRIQueryVersion(dpy, &major, &minor, &patch)) {
+ return NULL;
+ }
+
+ pdpyp = Xmalloc(sizeof *pdpyp);
+ if (!pdpyp) {
+ return NULL;
+ }
+
+ pdpyp->driMajor = major;
+ pdpyp->driMinor = minor;
+ pdpyp->driPatch = patch;
+
+ pdpyp->base.destroyDisplay = driDestroyDisplay;
+ pdpyp->base.createScreen = driCreateScreen;
+
+ return &pdpyp->base;
+}
+
+#endif /* GLX_DIRECT_RENDERING */