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, int screen,
 105                  char **driverName, char **busId, unsigned int *sareaHandle)
 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->screen = screen;
 118     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 119         UnlockDisplay(dpy);
 120         SyncHandle();
 121         return False;
 122     }
 123
 124     if (rep.driverNameLength == 0 && rep.busIdLength == 0) {
 125         UnlockDisplay(dpy);
 126         SyncHandle();
 127         return False;
 128     }
 129
 130     *driverName = Xmalloc(rep.driverNameLength + 1);
 131     if (*driverName == NULL) {
 132         _XEatData(dpy,
 133                   ((rep.driverNameLength + 3) & ~3) +
 134                   ((rep.busIdLength + 3) & ~3));
 135         UnlockDisplay(dpy);
 136         SyncHandle();
 137         return False;
 138     }
 139     _XReadPad(dpy, *driverName, rep.driverNameLength);
 140     (*driverName)[rep.driverNameLength] = '\0';
 141
 142     *busId = Xmalloc(rep.busIdLength + 1);
 143     if (*busId == NULL) {
 144         Xfree(*driverName);
 145         _XEatData(dpy, ((rep.busIdLength + 3) & ~3));
 146         UnlockDisplay(dpy);
 147         SyncHandle();
 148         return False;
 149     }
 150     _XReadPad(dpy, *busId, rep.busIdLength);
 151     (*busId)[rep.busIdLength] = '\0';
 152
 153     UnlockDisplay(dpy);
 154     SyncHandle();
 155
 156     return True;
 157 }
 158
 159 Bool DRI2AuthConnection(Display *dpy, int screen, drm_magic_t magic)
 160 {
 161     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 162     xDRI2AuthConnectionReq *req;
 163     xDRI2AuthConnectionReply rep;
 164
 165     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 166
 167     LockDisplay(dpy);
 168     GetReq(DRI2AuthConnection, req);
 169     req->reqType = info->codes->major_opcode;
 170     req->dri2ReqType = X_DRI2AuthConnection;
 171     req->screen = screen;
 172     req->magic = magic;
 173     rep.authenticated = 0;
 174     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 175         UnlockDisplay(dpy);
 176         SyncHandle();
 177         return False;
 178     }
 179     UnlockDisplay(dpy);
 180     SyncHandle();
 181
 182     return rep.authenticated;
 183 }
 184
 185 void DRI2CreateDrawable(Display *dpy, XID drawable)
 186 {
 187     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 188     xDRI2CreateDrawableReq *req;
 189
 190     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 191
 192     LockDisplay(dpy);
 193     GetReq(DRI2CreateDrawable, req);
 194     req->reqType = info->codes->major_opcode;
 195     req->dri2ReqType = X_DRI2CreateDrawable;
 196     req->drawable = drawable;
 197     UnlockDisplay(dpy);
 198     SyncHandle();
 199 }
 200
 201 DRI2Buffer *DRI2GetBuffers(Display *dpy, XID drawable,
 202                            int *width, int *height,
 203                            unsigned int *attachments, int count,
 204                            int *outCount)
 205 {
 206     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 207     xDRI2GetBuffersReply rep;
 208     xDRI2GetBuffersReq *req;
 209     DRI2Buffer *buffers;
 210     xDRI2Buffer repBuffer;
 211     CARD32 *p;
 212     int i;
 213
 214     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 215
 216     LockDisplay(dpy);
 217     GetReqExtra(DRI2GetBuffers, count * 4, req);
 218     req->reqType = info->codes->major_opcode;
 219     req->dri2ReqType = X_DRI2GetBuffers;
 220     req->drawable = drawable;
 221     req->count = count;
 222     p = (CARD32 *) &req[1];
 223     for (i = 0; i < count; i++)
 224         p[i] = attachments[i];
 225
 226     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 227         UnlockDisplay(dpy);
 228         SyncHandle();
 229         return NULL;
 230     }
 231
 232     *width = rep.width;
 233     *height = rep.height;
 234     *outCount = rep.count;
 235
 236     buffers = Xmalloc(count * sizeof buffers[0]);
 237     if (buffers == NULL) {
 238         _XEatData(dpy, rep.count * sizeof repBuffer);
 239         UnlockDisplay(dpy);
 240         SyncHandle();
 241         return NULL;
 242     }
 243
 244     for (i = 0; i < rep.count; i++) {
 245         _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 246         buffers[i].attachment = repBuffer.attachment;
 247         buffers[i].name = repBuffer.name;
 248         buffers[i].pitch = repBuffer.pitch;
 249         buffers[i].cpp = repBuffer.cpp;
 250         buffers[i].flags = repBuffer.flags;
 251     }
 252
 253     UnlockDisplay(dpy);
 254     SyncHandle();
 255
 256     return buffers;
 257 }
 258
 259 void DRI2SwapBuffers(Display *dpy, XID drawable,
 260                      int x, int y, int width, int height)
 261 {
 262     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 263     xDRI2SwapBuffersReq *req;
 264     xDRI2SwapBuffersReply rep;
 265
 266     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 267
 268     LockDisplay(dpy);
 269     GetReq(DRI2SwapBuffers, req);
 270     req->reqType = info->codes->major_opcode;
 271     req->dri2ReqType = X_DRI2SwapBuffers;
 272     req->drawable = drawable;
 273     req->x = x;
 274     req->y = y;
 275     req->width = width;
 276     req->height = height;
 277
 278     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 279
 280     UnlockDisplay(dpy);
 281     SyncHandle();
 282 }
 283
 284 void DRI2DestroyDrawable(Display *dpy, XID drawable)
 285 {
 286     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 287     xDRI2DestroyDrawableReq *req;
 288
 289     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 290
 291     XSync(dpy, False);
 292
 293     LockDisplay(dpy);
 294     GetReq(DRI2DestroyDrawable, req);
 295     req->reqType = info->codes->major_opcode;
 296     req->dri2ReqType = X_DRI2DestroyDrawable;
 297     req->drawable = drawable;
 298     UnlockDisplay(dpy);
 299     SyncHandle();
 300 }