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-rw-r--r--src/glx/x11/dri2.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/src/glx/x11/dri2.c b/src/glx/x11/dri2.c
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+++ b/src/glx/x11/dri2.c
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+/*
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Soft-
+ * ware"), to deal in the Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge, publish, distribute,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, provided that the above copyright
+ * notice(s) and this permission notice appear in all copies of the Soft-
+ * ware and that both the above copyright notice(s) and this permission
+ * notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
+ * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
+ * MANCE OF THIS SOFTWARE.
+ *
+ * Except as contained in this notice, the name of a copyright holder shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization of
+ * the copyright holder.
+ *
+ * Authors:
+ * Kristian Høgsberg ([email protected])
+ */
+
+
+#define NEED_REPLIES
+#include <X11/Xlibint.h>
+#include <X11/extensions/Xext.h>
+#include <X11/extensions/extutil.h>
+#include <X11/extensions/dri2proto.h>
+#include "glheader.h"
+#include "xf86drm.h"
+#include "dri2.h"
+
+static char dri2ExtensionName[] = DRI2_NAME;
+static XExtensionInfo *dri2Info;
+static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
+static /* const */ XExtensionHooks dri2ExtensionHooks = {
+ NULL, /* create_gc */
+ NULL, /* copy_gc */
+ NULL, /* flush_gc */
+ NULL, /* free_gc */
+ NULL, /* create_font */
+ NULL, /* free_font */
+ DRI2CloseDisplay, /* close_display */
+ NULL, /* wire_to_event */
+ NULL, /* event_to_wire */
+ NULL, /* error */
+ NULL, /* error_string */
+};
+
+static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay, dri2Info,
+ dri2ExtensionName,
+ &dri2ExtensionHooks,
+ 0, NULL)
+
+Bool DRI2QueryExtension(Display *dpy, int *eventBase, int *errorBase)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+
+ if (XextHasExtension(info)) {
+ *eventBase = info->codes->first_event;
+ *errorBase = info->codes->first_error;
+ return True;
+ }
+
+ return False;
+}
+
+Bool DRI2QueryVersion(Display *dpy, int *major, int *minor)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay (dpy);
+ xDRI2QueryVersionReply rep;
+ xDRI2QueryVersionReq *req;
+
+ XextCheckExtension (dpy, info, dri2ExtensionName, False);
+
+ LockDisplay(dpy);
+ GetReq(DRI2QueryVersion, req);
+ req->reqType = info->codes->major_opcode;
+ req->dri2ReqType = X_DRI2QueryVersion;
+ req->majorVersion = DRI2_MAJOR;
+ req->minorVersion = DRI2_MINOR;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ *major = rep.majorVersion;
+ *minor = rep.minorVersion;
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return True;
+}
+
+Bool DRI2Connect(Display *dpy, int screen,
+ char **driverName, char **busId, unsigned int *sareaHandle)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+ xDRI2ConnectReply rep;
+ xDRI2ConnectReq *req;
+
+ XextCheckExtension (dpy, info, dri2ExtensionName, False);
+
+ LockDisplay(dpy);
+ GetReq(DRI2Connect, req);
+ req->reqType = info->codes->major_opcode;
+ req->dri2ReqType = X_DRI2Connect;
+ req->screen = screen;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+
+ *sareaHandle = rep.sareaHandle;
+
+ *driverName = Xmalloc(rep.driverNameLength + 1);
+ if (*driverName == NULL) {
+ _XEatData(dpy,
+ ((rep.driverNameLength + 3) & ~3) +
+ ((rep.busIdLength + 3) & ~3));
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ _XReadPad(dpy, *driverName, rep.driverNameLength);
+ (*driverName)[rep.driverNameLength] = '\0';
+
+ *busId = Xmalloc(rep.busIdLength + 1);
+ if (*busId == NULL) {
+ Xfree(*driverName);
+ _XEatData(dpy, ((rep.busIdLength + 3) & ~3));
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ _XReadPad(dpy, *busId, rep.busIdLength);
+ (*busId)[rep.busIdLength] = '\0';
+
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return rep.sareaHandle != 0;
+}
+
+Bool DRI2AuthConnection(Display *dpy, int screen, drm_magic_t magic)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+ xDRI2AuthConnectionReq *req;
+ xDRI2AuthConnectionReply rep;
+
+ XextCheckExtension (dpy, info, dri2ExtensionName, False);
+
+ LockDisplay(dpy);
+ GetReq(DRI2AuthConnection, req);
+ req->reqType = info->codes->major_opcode;
+ req->dri2ReqType = X_DRI2AuthConnection;
+ req->screen = screen;
+ req->magic = magic;
+ rep.authenticated = 0;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ return rep.authenticated;
+}
+
+Bool DRI2CreateDrawable(Display *dpy, XID drawable,
+ unsigned int *handle, unsigned int *head)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+ xDRI2CreateDrawableReply rep;
+ xDRI2CreateDrawableReq *req;
+
+ XextCheckExtension (dpy, info, dri2ExtensionName, False);
+
+ LockDisplay(dpy);
+ GetReq(DRI2CreateDrawable, req);
+ req->reqType = info->codes->major_opcode;
+ req->dri2ReqType = X_DRI2CreateDrawable;
+ req->drawable = drawable;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ *handle = rep.handle;
+ *head = rep.head;
+
+ return True;
+}
+
+void DRI2DestroyDrawable(Display *dpy, XID drawable)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+ xDRI2DestroyDrawableReq *req;
+
+ XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
+
+ XSync(dpy, GL_FALSE);
+
+ LockDisplay(dpy);
+ GetReq(DRI2DestroyDrawable, req);
+ req->reqType = info->codes->major_opcode;
+ req->dri2ReqType = X_DRI2DestroyDrawable;
+ req->drawable = drawable;
+ UnlockDisplay(dpy);
+ SyncHandle();
+}
+
+Bool DRI2ReemitDrawableInfo(Display *dpy, XID drawable, unsigned int *head)
+{
+ XExtDisplayInfo *info = DRI2FindDisplay(dpy);
+ xDRI2ReemitDrawableInfoReply rep;
+ xDRI2ReemitDrawableInfoReq *req;
+
+ XextCheckExtension (dpy, info, dri2ExtensionName, False);
+
+ LockDisplay(dpy);
+ GetReq(DRI2ReemitDrawableInfo, req);
+ req->reqType = info->codes->major_opcode;
+ req->dri2ReqType = X_DRI2ReemitDrawableInfo;
+ req->drawable = drawable;
+ if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return False;
+ }
+ UnlockDisplay(dpy);
+ SyncHandle();
+
+ *head = rep.head;
+
+ return True;
+}
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