src/glx/x11/dri2.c

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