src/glx/x11/dri2.c

   1 /* -*- mode: c; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3; coding: utf-8-unix -*- */
   2 /*
   3  * Copyright © 2008 Red Hat, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Soft-
   7  * ware"), to deal in the Software without restriction, including without
   8  * limitation the rights to use, copy, modify, merge, publish, distribute,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, provided that the above copyright
  11  * notice(s) and this permission notice appear in all copies of the Soft-
  12  * ware and that both the above copyright notice(s) and this permission
  13  * notice appear in supporting documentation.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
  17  * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
  18  * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
  19  * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
  20  * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  21  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  22  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
  23  * MANCE OF THIS SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of a copyright holder shall
  26  * not be used in advertising or otherwise to promote the sale, use or
  27  * other dealings in this Software without prior written authorization of
  28  * the copyright holder.
  29  *
  30  * Authors:
  31  *   Kristian Høgsberg (krh@redhat.com)
  32  */
  33
  34
  35 #define NEED_REPLIES
  36 #include <X11/Xlibint.h>
  37 #include <X11/extensions/Xext.h>
  38 #include <X11/extensions/extutil.h>
  39 #include <X11/extensions/dri2proto.h>
  40 #include "xf86drm.h"
  41 #include "dri2.h"
  42
  43 static char dri2ExtensionName[] = DRI2_NAME;
  44 static XExtensionInfo *dri2Info;
  45 static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
  46 static /* const */ XExtensionHooks dri2ExtensionHooks = {
  47     NULL,                               /* create_gc */
  48     NULL,                               /* copy_gc */
  49     NULL,                               /* flush_gc */
  50     NULL,                               /* free_gc */
  51     NULL,                               /* create_font */
  52     NULL,                               /* free_font */
  53     DRI2CloseDisplay,                   /* close_display */
  54     NULL,                               /* wire_to_event */
  55     NULL,                               /* event_to_wire */
  56     NULL,                               /* error */
  57     NULL,                               /* error_string */
  58 };
  59
  60 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay, dri2Info,
  61                                    dri2ExtensionName,
  62                                    &dri2ExtensionHooks,
  63                                    0, NULL)
  64
  65 Bool DRI2QueryExtension(Display *dpy, int *eventBase, int *errorBase)
  66 {
  67     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  68
  69     if (XextHasExtension(info)) {
  70         *eventBase = info->codes->first_event;
  71         *errorBase = info->codes->first_error;
  72         return True;
  73     }
  74
  75     return False;
  76 }
  77
  78 Bool DRI2QueryVersion(Display *dpy, int *major, int *minor)
  79 {
  80     XExtDisplayInfo *info = DRI2FindDisplay (dpy);
  81     xDRI2QueryVersionReply rep;
  82     xDRI2QueryVersionReq *req;
  83
  84     XextCheckExtension (dpy, info, dri2ExtensionName, False);
  85
  86     LockDisplay(dpy);
  87     GetReq(DRI2QueryVersion, req);
  88     req->reqType = info->codes->major_opcode;
  89     req->dri2ReqType = X_DRI2QueryVersion;
  90     req->majorVersion = DRI2_MAJOR;
  91     req->minorVersion = DRI2_MINOR;
  92     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
  93         UnlockDisplay(dpy);
  94         SyncHandle();
  95         return False;
  96     }
  97     *major = rep.majorVersion;
  98     *minor = rep.minorVersion;
  99     UnlockDisplay(dpy);
 100     SyncHandle();
 101
 102     return True;
 103 }
 104
 105 Bool DRI2Connect(Display *dpy, XID window,
 106                  char **driverName, char **deviceName)
 107 {
 108     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 109     xDRI2ConnectReply rep;
 110     xDRI2ConnectReq *req;
 111
 112     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 113
 114     LockDisplay(dpy);
 115     GetReq(DRI2Connect, req);
 116     req->reqType = info->codes->major_opcode;
 117     req->dri2ReqType = X_DRI2Connect;
 118     req->window = window;
 119     req->driverType = DRI2DriverDRI;
 120     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 121         UnlockDisplay(dpy);
 122         SyncHandle();
 123         return False;
 124     }
 125
 126     if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 127         UnlockDisplay(dpy);
 128         SyncHandle();
 129         return False;
 130     }
 131
 132     *driverName = Xmalloc(rep.driverNameLength + 1);
 133     if (*driverName == NULL) {
 134         _XEatData(dpy,
 135                   ((rep.driverNameLength + 3) & ~3) +
 136                   ((rep.deviceNameLength + 3) & ~3));
 137         UnlockDisplay(dpy);
 138         SyncHandle();
 139         return False;
 140     }
 141     _XReadPad(dpy, *driverName, rep.driverNameLength);
 142     (*driverName)[rep.driverNameLength] = '\0';
 143
 144     *deviceName = Xmalloc(rep.deviceNameLength + 1);
 145     if (*deviceName == NULL) {
 146         Xfree(*driverName);
 147         _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 148         UnlockDisplay(dpy);
 149         SyncHandle();
 150         return False;
 151     }
 152     _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 153     (*deviceName)[rep.deviceNameLength] = '\0';
 154
 155     UnlockDisplay(dpy);
 156     SyncHandle();
 157
 158     return True;
 159 }
 160
 161 Bool DRI2Authenticate(Display *dpy, XID window, drm_magic_t magic)
 162 {
 163     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 164     xDRI2AuthenticateReq *req;
 165     xDRI2AuthenticateReply rep;
 166
 167     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 168
 169     LockDisplay(dpy);
 170     GetReq(DRI2Authenticate, req);
 171     req->reqType = info->codes->major_opcode;
 172     req->dri2ReqType = X_DRI2Authenticate;
 173     req->window = window;
 174     req->magic = magic;
 175
 176     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 177         UnlockDisplay(dpy);
 178         SyncHandle();
 179         return False;
 180     }
 181
 182     UnlockDisplay(dpy);
 183     SyncHandle();
 184
 185     return rep.authenticated;
 186 }
 187
 188 void DRI2CreateDrawable(Display *dpy, XID drawable)
 189 {
 190     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 191     xDRI2CreateDrawableReq *req;
 192
 193     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 194
 195     LockDisplay(dpy);
 196     GetReq(DRI2CreateDrawable, req);
 197     req->reqType = info->codes->major_opcode;
 198     req->dri2ReqType = X_DRI2CreateDrawable;
 199     req->drawable = drawable;
 200     UnlockDisplay(dpy);
 201     SyncHandle();
 202 }
 203
 204 void DRI2DestroyDrawable(Display *dpy, XID drawable)
 205 {
 206     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 207     xDRI2DestroyDrawableReq *req;
 208
 209     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 210
 211     XSync(dpy, False);
 212
 213     LockDisplay(dpy);
 214     GetReq(DRI2DestroyDrawable, req);
 215     req->reqType = info->codes->major_opcode;
 216     req->dri2ReqType = X_DRI2DestroyDrawable;
 217     req->drawable = drawable;
 218     UnlockDisplay(dpy);
 219     SyncHandle();
 220 }
 221
 222 DRI2Buffer *DRI2GetBuffers(Display *dpy, XID drawable,
 223                            int *width, int *height,
 224                            unsigned int *attachments, int count,
 225                            int *outCount)
 226 {
 227     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 228     xDRI2GetBuffersReply rep;
 229     xDRI2GetBuffersReq *req;
 230     DRI2Buffer *buffers;
 231     xDRI2Buffer repBuffer;
 232     CARD32 *p;
 233     int i;
 234
 235     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 236
 237     LockDisplay(dpy);
 238     GetReqExtra(DRI2GetBuffers, count * 4, req);
 239     req->reqType = info->codes->major_opcode;
 240     req->dri2ReqType = X_DRI2GetBuffers;
 241     req->drawable = drawable;
 242     req->count = count;
 243     p = (CARD32 *) &req[1];
 244     for (i = 0; i < count; i++)
 245         p[i] = attachments[i];
 246
 247     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 248         UnlockDisplay(dpy);
 249         SyncHandle();
 250         return NULL;
 251     }
 252
 253     *width = rep.width;
 254     *height = rep.height;
 255     *outCount = rep.count;
 256
 257     buffers = Xmalloc(count * sizeof buffers[0]);
 258     if (buffers == NULL) {
 259         _XEatData(dpy, rep.count * sizeof repBuffer);
 260         UnlockDisplay(dpy);
 261         SyncHandle();
 262         return NULL;
 263     }
 264
 265     for (i = 0; i < rep.count; i++) {
 266         _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 267         buffers[i].attachment = repBuffer.attachment;
 268         buffers[i].name = repBuffer.name;
 269         buffers[i].pitch = repBuffer.pitch;
 270         buffers[i].cpp = repBuffer.cpp;
 271         buffers[i].flags = repBuffer.flags;
 272     }
 273
 274     UnlockDisplay(dpy);
 275     SyncHandle();
 276
 277     return buffers;
 278 }
 279
 280 void DRI2CopyRegion(Display *dpy, XID drawable, XserverRegion region,
 281                     CARD32 dest, CARD32 src)
 282 {
 283     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 284     xDRI2CopyRegionReq *req;
 285     xDRI2CopyRegionReply rep;
 286
 287     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 288
 289     LockDisplay(dpy);
 290     GetReq(DRI2CopyRegion, req);
 291     req->reqType = info->codes->major_opcode;
 292     req->dri2ReqType = X_DRI2CopyRegion;
 293     req->drawable = drawable;
 294     req->region = region;
 295     req->dest = dest;
 296     req->src = src;
 297     req->bitmask = 0;
 298
 299     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 300
 301     UnlockDisplay(dpy);
 302     SyncHandle();
 303 }