hw/display/virtio-gpu-3d.c

   1 /*
   2  * Virtio GPU Device
   3  *
   4  * Copyright Red Hat, Inc. 2013-2014
   5  *
   6  * Authors:
   7  *     Dave Airlie <[email protected]>
   8  *     Gerd Hoffmann <[email protected]>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qemu-common.h"
  16 #include "qemu/iov.h"
  17 #include "trace.h"
  18 #include "hw/virtio/virtio.h"
  19 #include "hw/virtio/virtio-gpu.h"
  20
  21 #ifdef CONFIG_VIRGL
  22
  23 #include "virglrenderer.h"
  24
  25 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs;
  26
  27 static void virgl_cmd_create_resource_2d(VirtIOGPU *g,
  28                                          struct virtio_gpu_ctrl_command *cmd)
  29 {
  30     struct virtio_gpu_resource_create_2d c2d;
  31     struct virgl_renderer_resource_create_args args;
  32
  33     VIRTIO_GPU_FILL_CMD(c2d);
  34     trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
  35                                        c2d.width, c2d.height);
  36
  37     args.handle = c2d.resource_id;
  38     args.target = 2;
  39     args.format = c2d.format;
  40     args.bind = (1 << 1);
  41     args.width = c2d.width;
  42     args.height = c2d.height;
  43     args.depth = 1;
  44     args.array_size = 1;
  45     args.last_level = 0;
  46     args.nr_samples = 0;
  47     args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;
  48     virgl_renderer_resource_create(&args, NULL, 0);
  49 }
  50
  51 static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
  52                                          struct virtio_gpu_ctrl_command *cmd)
  53 {
  54     struct virtio_gpu_resource_create_3d c3d;
  55     struct virgl_renderer_resource_create_args args;
  56
  57     VIRTIO_GPU_FILL_CMD(c3d);
  58     trace_virtio_gpu_cmd_res_create_3d(c3d.resource_id, c3d.format,
  59                                        c3d.width, c3d.height, c3d.depth);
  60
  61     args.handle = c3d.resource_id;
  62     args.target = c3d.target;
  63     args.format = c3d.format;
  64     args.bind = c3d.bind;
  65     args.width = c3d.width;
  66     args.height = c3d.height;
  67     args.depth = c3d.depth;
  68     args.array_size = c3d.array_size;
  69     args.last_level = c3d.last_level;
  70     args.nr_samples = c3d.nr_samples;
  71     args.flags = c3d.flags;
  72     virgl_renderer_resource_create(&args, NULL, 0);
  73 }
  74
  75 static void virgl_cmd_resource_unref(VirtIOGPU *g,
  76                                      struct virtio_gpu_ctrl_command *cmd)
  77 {
  78     struct virtio_gpu_resource_unref unref;
  79
  80     VIRTIO_GPU_FILL_CMD(unref);
  81     trace_virtio_gpu_cmd_res_unref(unref.resource_id);
  82
  83     virgl_renderer_resource_unref(unref.resource_id);
  84 }
  85
  86 static void virgl_cmd_context_create(VirtIOGPU *g,
  87                                      struct virtio_gpu_ctrl_command *cmd)
  88 {
  89     struct virtio_gpu_ctx_create cc;
  90
  91     VIRTIO_GPU_FILL_CMD(cc);
  92     trace_virtio_gpu_cmd_ctx_create(cc.hdr.ctx_id,
  93                                     cc.debug_name);
  94
  95     virgl_renderer_context_create(cc.hdr.ctx_id, cc.nlen,
  96                                   cc.debug_name);
  97 }
  98
  99 static void virgl_cmd_context_destroy(VirtIOGPU *g,
 100                                       struct virtio_gpu_ctrl_command *cmd)
 101 {
 102     struct virtio_gpu_ctx_destroy cd;
 103
 104     VIRTIO_GPU_FILL_CMD(cd);
 105     trace_virtio_gpu_cmd_ctx_destroy(cd.hdr.ctx_id);
 106
 107     virgl_renderer_context_destroy(cd.hdr.ctx_id);
 108 }
 109
 110 static void virtio_gpu_rect_update(VirtIOGPU *g, int idx, int x, int y,
 111                                 int width, int height)
 112 {
 113     if (!g->scanout[idx].con) {
 114         return;
 115     }
 116
 117     dpy_gl_update(g->scanout[idx].con, x, y, width, height);
 118 }
 119
 120 static void virgl_cmd_resource_flush(VirtIOGPU *g,
 121                                      struct virtio_gpu_ctrl_command *cmd)
 122 {
 123     struct virtio_gpu_resource_flush rf;
 124     int i;
 125
 126     VIRTIO_GPU_FILL_CMD(rf);
 127     trace_virtio_gpu_cmd_res_flush(rf.resource_id,
 128                                    rf.r.width, rf.r.height, rf.r.x, rf.r.y);
 129
 130     for (i = 0; i < VIRTIO_GPU_MAX_SCANOUT; i++) {
 131         if (g->scanout[i].resource_id != rf.resource_id) {
 132             continue;
 133         }
 134         virtio_gpu_rect_update(g, i, rf.r.x, rf.r.y, rf.r.width, rf.r.height);
 135     }
 136 }
 137
 138 static void virgl_cmd_set_scanout(VirtIOGPU *g,
 139                                   struct virtio_gpu_ctrl_command *cmd)
 140 {
 141     struct virtio_gpu_set_scanout ss;
 142     struct virgl_renderer_resource_info info;
 143     int ret;
 144
 145     VIRTIO_GPU_FILL_CMD(ss);
 146     trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
 147                                      ss.r.width, ss.r.height, ss.r.x, ss.r.y);
 148
 149     if (ss.scanout_id >= VIRTIO_GPU_MAX_SCANOUT) {
 150         qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
 151                       __func__, ss.scanout_id);
 152         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
 153         return;
 154     }
 155     g->enable = 1;
 156
 157     memset(&info, 0, sizeof(info));
 158
 159     if (ss.resource_id && ss.r.width && ss.r.height) {
 160         ret = virgl_renderer_resource_get_info(ss.resource_id, &info);
 161         if (ret == -1) {
 162             qemu_log_mask(LOG_GUEST_ERROR,
 163                           "%s: illegal resource specified %d\n",
 164                           __func__, ss.resource_id);
 165             cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
 166             return;
 167         }
 168         qemu_console_resize(g->scanout[ss.scanout_id].con,
 169                             ss.r.width, ss.r.height);
 170         virgl_renderer_force_ctx_0();
 171         dpy_gl_scanout(g->scanout[ss.scanout_id].con, info.tex_id,
 172                        info.flags & 1 /* FIXME: Y_0_TOP */,
 173                        ss.r.x, ss.r.y, ss.r.width, ss.r.height);
 174     } else {
 175         if (ss.scanout_id != 0) {
 176             dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
 177         }
 178         dpy_gl_scanout(g->scanout[ss.scanout_id].con, 0, false,
 179                        0, 0, 0, 0);
 180     }
 181     g->scanout[ss.scanout_id].resource_id = ss.resource_id;
 182 }
 183
 184 static void virgl_cmd_submit_3d(VirtIOGPU *g,
 185                                 struct virtio_gpu_ctrl_command *cmd)
 186 {
 187     struct virtio_gpu_cmd_submit cs;
 188     void *buf;
 189     size_t s;
 190
 191     VIRTIO_GPU_FILL_CMD(cs);
 192     trace_virtio_gpu_cmd_ctx_submit(cs.hdr.ctx_id, cs.size);
 193
 194     buf = g_malloc(cs.size);
 195     s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
 196                    sizeof(cs), buf, cs.size);
 197     if (s != cs.size) {
 198         qemu_log_mask(LOG_GUEST_ERROR, "%s: size mismatch (%zd/%d)",
 199                       __func__, s, cs.size);
 200         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 201         goto out;
 202     }
 203
 204     if (virtio_gpu_stats_enabled(g->conf)) {
 205         g->stats.req_3d++;
 206         g->stats.bytes_3d += cs.size;
 207     }
 208
 209     virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4);
 210
 211 out:
 212     g_free(buf);
 213 }
 214
 215 static void virgl_cmd_transfer_to_host_2d(VirtIOGPU *g,
 216                                           struct virtio_gpu_ctrl_command *cmd)
 217 {
 218     struct virtio_gpu_transfer_to_host_2d t2d;
 219     struct virtio_gpu_box box;
 220
 221     VIRTIO_GPU_FILL_CMD(t2d);
 222     trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
 223
 224     box.x = t2d.r.x;
 225     box.y = t2d.r.y;
 226     box.z = 0;
 227     box.w = t2d.r.width;
 228     box.h = t2d.r.height;
 229     box.d = 1;
 230
 231     virgl_renderer_transfer_write_iov(t2d.resource_id,
 232                                       0,
 233                                       0,
 234                                       0,
 235                                       0,
 236                                       (struct virgl_box *)&box,
 237                                       t2d.offset, NULL, 0);
 238 }
 239
 240 static void virgl_cmd_transfer_to_host_3d(VirtIOGPU *g,
 241                                           struct virtio_gpu_ctrl_command *cmd)
 242 {
 243     struct virtio_gpu_transfer_host_3d t3d;
 244
 245     VIRTIO_GPU_FILL_CMD(t3d);
 246     trace_virtio_gpu_cmd_res_xfer_toh_3d(t3d.resource_id);
 247
 248     virgl_renderer_transfer_write_iov(t3d.resource_id,
 249                                       t3d.hdr.ctx_id,
 250                                       t3d.level,
 251                                       t3d.stride,
 252                                       t3d.layer_stride,
 253                                       (struct virgl_box *)&t3d.box,
 254                                       t3d.offset, NULL, 0);
 255 }
 256
 257 static void
 258 virgl_cmd_transfer_from_host_3d(VirtIOGPU *g,
 259                                 struct virtio_gpu_ctrl_command *cmd)
 260 {
 261     struct virtio_gpu_transfer_host_3d tf3d;
 262
 263     VIRTIO_GPU_FILL_CMD(tf3d);
 264     trace_virtio_gpu_cmd_res_xfer_fromh_3d(tf3d.resource_id);
 265
 266     virgl_renderer_transfer_read_iov(tf3d.resource_id,
 267                                      tf3d.hdr.ctx_id,
 268                                      tf3d.level,
 269                                      tf3d.stride,
 270                                      tf3d.layer_stride,
 271                                      (struct virgl_box *)&tf3d.box,
 272                                      tf3d.offset, NULL, 0);
 273 }
 274
 275
 276 static void virgl_resource_attach_backing(VirtIOGPU *g,
 277                                           struct virtio_gpu_ctrl_command *cmd)
 278 {
 279     struct virtio_gpu_resource_attach_backing att_rb;
 280     struct iovec *res_iovs;
 281     int ret;
 282
 283     VIRTIO_GPU_FILL_CMD(att_rb);
 284     trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
 285
 286     ret = virtio_gpu_create_mapping_iov(&att_rb, cmd, &res_iovs);
 287     if (ret != 0) {
 288         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 289         return;
 290     }
 291
 292     virgl_renderer_resource_attach_iov(att_rb.resource_id,
 293                                        res_iovs, att_rb.nr_entries);
 294 }
 295
 296 static void virgl_resource_detach_backing(VirtIOGPU *g,
 297                                           struct virtio_gpu_ctrl_command *cmd)
 298 {
 299     struct virtio_gpu_resource_detach_backing detach_rb;
 300     struct iovec *res_iovs = NULL;
 301     int num_iovs = 0;
 302
 303     VIRTIO_GPU_FILL_CMD(detach_rb);
 304     trace_virtio_gpu_cmd_res_back_detach(detach_rb.resource_id);
 305
 306     virgl_renderer_resource_detach_iov(detach_rb.resource_id,
 307                                        &res_iovs,
 308                                        &num_iovs);
 309     if (res_iovs == NULL || num_iovs == 0) {
 310         return;
 311     }
 312     virtio_gpu_cleanup_mapping_iov(res_iovs, num_iovs);
 313 }
 314
 315
 316 static void virgl_cmd_ctx_attach_resource(VirtIOGPU *g,
 317                                           struct virtio_gpu_ctrl_command *cmd)
 318 {
 319     struct virtio_gpu_ctx_resource att_res;
 320
 321     VIRTIO_GPU_FILL_CMD(att_res);
 322     trace_virtio_gpu_cmd_ctx_res_attach(att_res.hdr.ctx_id,
 323                                         att_res.resource_id);
 324
 325     virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id);
 326 }
 327
 328 static void virgl_cmd_ctx_detach_resource(VirtIOGPU *g,
 329                                           struct virtio_gpu_ctrl_command *cmd)
 330 {
 331     struct virtio_gpu_ctx_resource det_res;
 332
 333     VIRTIO_GPU_FILL_CMD(det_res);
 334     trace_virtio_gpu_cmd_ctx_res_detach(det_res.hdr.ctx_id,
 335                                         det_res.resource_id);
 336
 337     virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id);
 338 }
 339
 340 static void virgl_cmd_get_capset_info(VirtIOGPU *g,
 341                                       struct virtio_gpu_ctrl_command *cmd)
 342 {
 343     struct virtio_gpu_get_capset_info info;
 344     struct virtio_gpu_resp_capset_info resp;
 345
 346     VIRTIO_GPU_FILL_CMD(info);
 347
 348     if (info.capset_index == 0) {
 349         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
 350         virgl_renderer_get_cap_set(resp.capset_id,
 351                                    &resp.capset_max_version,
 352                                    &resp.capset_max_size);
 353     } else {
 354         resp.capset_max_version = 0;
 355         resp.capset_max_size = 0;
 356     }
 357     resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO;
 358     virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
 359 }
 360
 361 static void virgl_cmd_get_capset(VirtIOGPU *g,
 362                                  struct virtio_gpu_ctrl_command *cmd)
 363 {
 364     struct virtio_gpu_get_capset gc;
 365     struct virtio_gpu_resp_capset *resp;
 366     uint32_t max_ver, max_size;
 367     VIRTIO_GPU_FILL_CMD(gc);
 368
 369     virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
 370                                &max_size);
 371     resp = g_malloc(sizeof(*resp) + max_size);
 372
 373     resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
 374     virgl_renderer_fill_caps(gc.capset_id,
 375                              gc.capset_version,
 376                              (void *)resp->capset_data);
 377     virtio_gpu_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size);
 378     g_free(resp);
 379 }
 380
 381 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 382                                       struct virtio_gpu_ctrl_command *cmd)
 383 {
 384     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
 385
 386     virgl_renderer_force_ctx_0();
 387     switch (cmd->cmd_hdr.type) {
 388     case VIRTIO_GPU_CMD_CTX_CREATE:
 389         virgl_cmd_context_create(g, cmd);
 390         break;
 391     case VIRTIO_GPU_CMD_CTX_DESTROY:
 392         virgl_cmd_context_destroy(g, cmd);
 393         break;
 394     case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
 395         virgl_cmd_create_resource_2d(g, cmd);
 396         break;
 397     case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D:
 398         virgl_cmd_create_resource_3d(g, cmd);
 399         break;
 400     case VIRTIO_GPU_CMD_SUBMIT_3D:
 401         virgl_cmd_submit_3d(g, cmd);
 402         break;
 403     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
 404         virgl_cmd_transfer_to_host_2d(g, cmd);
 405         break;
 406     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D:
 407         virgl_cmd_transfer_to_host_3d(g, cmd);
 408         break;
 409     case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D:
 410         virgl_cmd_transfer_from_host_3d(g, cmd);
 411         break;
 412     case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
 413         virgl_resource_attach_backing(g, cmd);
 414         break;
 415     case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
 416         virgl_resource_detach_backing(g, cmd);
 417         break;
 418     case VIRTIO_GPU_CMD_SET_SCANOUT:
 419         virgl_cmd_set_scanout(g, cmd);
 420         break;
 421     case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
 422         virgl_cmd_resource_flush(g, cmd);
 423        break;
 424     case VIRTIO_GPU_CMD_RESOURCE_UNREF:
 425         virgl_cmd_resource_unref(g, cmd);
 426         break;
 427     case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE:
 428         /* TODO add security */
 429         virgl_cmd_ctx_attach_resource(g, cmd);
 430         break;
 431     case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE:
 432         /* TODO add security */
 433         virgl_cmd_ctx_detach_resource(g, cmd);
 434         break;
 435     case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
 436         virgl_cmd_get_capset_info(g, cmd);
 437         break;
 438     case VIRTIO_GPU_CMD_GET_CAPSET:
 439         virgl_cmd_get_capset(g, cmd);
 440         break;
 441
 442     case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
 443         virtio_gpu_get_display_info(g, cmd);
 444         break;
 445     default:
 446         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 447         break;
 448     }
 449
 450     if (cmd->finished) {
 451         return;
 452     }
 453     if (cmd->error) {
 454         fprintf(stderr, "%s: ctrl 0x%x, error 0x%x\n", __func__,
 455                 cmd->cmd_hdr.type, cmd->error);
 456         virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error);
 457         return;
 458     }
 459     if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) {
 460         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 461         return;
 462     }
 463
 464     trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 465     virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 466 }
 467
 468 static void virgl_write_fence(void *opaque, uint32_t fence)
 469 {
 470     VirtIOGPU *g = opaque;
 471     struct virtio_gpu_ctrl_command *cmd, *tmp;
 472
 473     QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
 474         /*
 475          * the guest can end up emitting fences out of order
 476          * so we should check all fenced cmds not just the first one.
 477          */
 478         if (cmd->cmd_hdr.fence_id > fence) {
 479             continue;
 480         }
 481         trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
 482         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 483         QTAILQ_REMOVE(&g->fenceq, cmd, next);
 484         g_free(cmd);
 485         g->inflight--;
 486         if (virtio_gpu_stats_enabled(g->conf)) {
 487             fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
 488         }
 489     }
 490 }
 491
 492 static virgl_renderer_gl_context
 493 virgl_create_context(void *opaque, int scanout_idx,
 494                      struct virgl_renderer_gl_ctx_param *params)
 495 {
 496     VirtIOGPU *g = opaque;
 497     QEMUGLContext ctx;
 498     QEMUGLParams qparams;
 499
 500     qparams.major_ver = params->major_ver;
 501     qparams.minor_ver = params->minor_ver;
 502
 503     ctx = dpy_gl_ctx_create(g->scanout[scanout_idx].con, &qparams);
 504     return (virgl_renderer_gl_context)ctx;
 505 }
 506
 507 static void virgl_destroy_context(void *opaque, virgl_renderer_gl_context ctx)
 508 {
 509     VirtIOGPU *g = opaque;
 510     QEMUGLContext qctx = (QEMUGLContext)ctx;
 511
 512     dpy_gl_ctx_destroy(g->scanout[0].con, qctx);
 513 }
 514
 515 static int virgl_make_context_current(void *opaque, int scanout_idx,
 516                                       virgl_renderer_gl_context ctx)
 517 {
 518     VirtIOGPU *g = opaque;
 519     QEMUGLContext qctx = (QEMUGLContext)ctx;
 520
 521     return dpy_gl_ctx_make_current(g->scanout[scanout_idx].con, qctx);
 522 }
 523
 524 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
 525     .version             = 1,
 526     .write_fence         = virgl_write_fence,
 527     .create_gl_context   = virgl_create_context,
 528     .destroy_gl_context  = virgl_destroy_context,
 529     .make_current        = virgl_make_context_current,
 530 };
 531
 532 static void virtio_gpu_print_stats(void *opaque)
 533 {
 534     VirtIOGPU *g = opaque;
 535
 536     if (g->stats.requests) {
 537         fprintf(stderr, "stats: vq req %4d, %3d -- 3D %4d (%5d)\n",
 538                 g->stats.requests,
 539                 g->stats.max_inflight,
 540                 g->stats.req_3d,
 541                 g->stats.bytes_3d);
 542         g->stats.requests     = 0;
 543         g->stats.max_inflight = 0;
 544         g->stats.req_3d       = 0;
 545         g->stats.bytes_3d     = 0;
 546     } else {
 547         fprintf(stderr, "stats: idle\r");
 548     }
 549     timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 550 }
 551
 552 static void virtio_gpu_fence_poll(void *opaque)
 553 {
 554     VirtIOGPU *g = opaque;
 555
 556     virgl_renderer_poll();
 557     virtio_gpu_process_cmdq(g);
 558     if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) {
 559         timer_mod(g->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
 560     }
 561 }
 562
 563 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
 564 {
 565     virtio_gpu_fence_poll(g);
 566 }
 567
 568 void virtio_gpu_virgl_reset(VirtIOGPU *g)
 569 {
 570     int i;
 571
 572     /* virgl_renderer_reset() ??? */
 573     for (i = 0; i < g->conf.max_outputs; i++) {
 574         if (i != 0) {
 575             dpy_gfx_replace_surface(g->scanout[i].con, NULL);
 576         }
 577         dpy_gl_scanout(g->scanout[i].con, 0, false, 0, 0, 0, 0);
 578     }
 579 }
 580
 581 int virtio_gpu_virgl_init(VirtIOGPU *g)
 582 {
 583     int ret;
 584
 585     ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
 586     if (ret != 0) {
 587         return ret;
 588     }
 589
 590     g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 591                                  virtio_gpu_fence_poll, g);
 592
 593     if (virtio_gpu_stats_enabled(g->conf)) {
 594         g->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 595                                       virtio_gpu_print_stats, g);
 596         timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 597     }
 598     return 0;
 599 }
 600
 601 #endif /* CONFIG_VIRGL */