src/gallium/drivers/virgl/virgl_context.c

   1 /*
   2  * Copyright 2014, 2015 Red Hat.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "pipe/p_shader_tokens.h"
  25
  26 #include "pipe/p_context.h"
  27 #include "pipe/p_defines.h"
  28 #include "pipe/p_screen.h"
  29 #include "pipe/p_state.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_format.h"
  33 #include "util/u_transfer.h"
  34 #include "util/u_helpers.h"
  35 #include "util/u_slab.h"
  36 #include "util/u_upload_mgr.h"
  37 #include "util/u_blitter.h"
  38 #include "tgsi/tgsi_text.h"
  39 #include "indices/u_primconvert.h"
  40
  41 #include "pipebuffer/pb_buffer.h"
  42 #include "state_tracker/graw.h"
  43
  44 #include "virgl_encode.h"
  45 #include "virgl_context.h"
  46 #include "virgl_protocol.h"
  47 #include "virgl_resource.h"
  48 #include "virgl_screen.h"
  49
  50 static uint32_t next_handle;
  51 uint32_t virgl_object_assign_handle(void)
  52 {
  53    return ++next_handle;
  54 }
  55
  56 static void virgl_buffer_flush(struct virgl_context *vctx,
  57                               struct virgl_buffer *vbuf)
  58 {
  59    struct virgl_screen *rs = virgl_screen(vctx->base.screen);
  60    struct pipe_box box;
  61
  62    assert(vbuf->on_list);
  63
  64    box.height = 1;
  65    box.depth = 1;
  66    box.y = 0;
  67    box.z = 0;
  68
  69    box.x = vbuf->valid_buffer_range.start;
  70    box.width = MIN2(vbuf->valid_buffer_range.end - vbuf->valid_buffer_range.start, vbuf->base.u.b.width0);
  71
  72    vctx->num_transfers++;
  73    rs->vws->transfer_put(rs->vws, vbuf->base.hw_res,
  74                          &box, 0, 0, box.x, 0);
  75
  76    util_range_set_empty(&vbuf->valid_buffer_range);
  77 }
  78
  79 static void virgl_attach_res_framebuffer(struct virgl_context *vctx)
  80 {
  81    struct virgl_winsys *vws = virgl_screen(vctx->base.screen)->vws;
  82    struct pipe_surface *surf;
  83    struct virgl_resource *res;
  84    unsigned i;
  85
  86    surf = vctx->framebuffer.zsbuf;
  87    if (surf) {
  88       res = virgl_resource(surf->texture);
  89       if (res)
  90          vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
  91    }
  92    for (i = 0; i < vctx->framebuffer.nr_cbufs; i++) {
  93       surf = vctx->framebuffer.cbufs[i];
  94       if (surf) {
  95          res = virgl_resource(surf->texture);
  96          if (res)
  97             vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
  98       }
  99    }
 100 }
 101
 102 static void virgl_attach_res_sampler_views(struct virgl_context *vctx,
 103                                            unsigned shader_type)
 104 {
 105    struct virgl_winsys *vws = virgl_screen(vctx->base.screen)->vws;
 106    struct virgl_textures_info *tinfo = &vctx->samplers[shader_type];
 107    struct virgl_resource *res;
 108    uint32_t remaining_mask = tinfo->enabled_mask;
 109    unsigned i;
 110    while (remaining_mask) {
 111       i = u_bit_scan(&remaining_mask);
 112       assert(tinfo->views[i]);
 113
 114       res = virgl_resource(tinfo->views[i]->base.texture);
 115       if (res)
 116          vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
 117    }
 118 }
 119
 120 static void virgl_attach_res_vertex_buffers(struct virgl_context *vctx)
 121 {
 122    struct virgl_winsys *vws = virgl_screen(vctx->base.screen)->vws;
 123    struct virgl_resource *res;
 124    unsigned i;
 125
 126    for (i = 0; i < vctx->num_vertex_buffers; i++) {
 127       res = virgl_resource(vctx->vertex_buffer[i].buffer);
 128       if (res)
 129          vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
 130    }
 131 }
 132
 133 static void virgl_attach_res_index_buffer(struct virgl_context *vctx)
 134 {
 135    struct virgl_winsys *vws = virgl_screen(vctx->base.screen)->vws;
 136    struct virgl_resource *res;
 137
 138    res = virgl_resource(vctx->index_buffer.buffer);
 139    if (res)
 140       vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
 141 }
 142
 143 static void virgl_attach_res_so_targets(struct virgl_context *vctx)
 144 {
 145    struct virgl_winsys *vws = virgl_screen(vctx->base.screen)->vws;
 146    struct virgl_resource *res;
 147    unsigned i;
 148
 149    for (i = 0; i < vctx->num_so_targets; i++) {
 150       res = virgl_resource(vctx->so_targets[i].base.buffer);
 151       if (res)
 152          vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
 153    }
 154 }
 155
 156 static void virgl_attach_res_uniform_buffers(struct virgl_context *vctx,
 157                                              unsigned shader_type)
 158 {
 159    struct virgl_winsys *vws = virgl_screen(vctx->base.screen)->vws;
 160    struct virgl_resource *res;
 161    unsigned i;
 162    for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
 163       res = virgl_resource(vctx->ubos[shader_type][i]);
 164       if (res) {
 165          vws->emit_res(vws, vctx->cbuf, res->hw_res, FALSE);
 166       }
 167    }
 168 }
 169
 170 /*
 171  * after flushing, the hw context still has a bunch of
 172  * resources bound, so we need to rebind those here.
 173  */
 174 static void virgl_reemit_res(struct virgl_context *vctx)
 175 {
 176    unsigned shader_type;
 177
 178    /* reattach any flushed resources */
 179    /* framebuffer, sampler views, vertex/index/uniform/stream buffers */
 180    virgl_attach_res_framebuffer(vctx);
 181
 182    for (shader_type = 0; shader_type < PIPE_SHADER_TYPES; shader_type++) {
 183       virgl_attach_res_sampler_views(vctx, shader_type);
 184       virgl_attach_res_uniform_buffers(vctx, shader_type);
 185    }
 186    virgl_attach_res_index_buffer(vctx);
 187    virgl_attach_res_vertex_buffers(vctx);
 188    virgl_attach_res_so_targets(vctx);
 189 }
 190
 191 static struct pipe_surface *virgl_create_surface(struct pipe_context *ctx,
 192                                                 struct pipe_resource *resource,
 193                                                 const struct pipe_surface *templ)
 194 {
 195    struct virgl_context *vctx = virgl_context(ctx);
 196    struct virgl_surface *surf;
 197    struct virgl_resource *res = virgl_resource(resource);
 198    uint32_t handle;
 199
 200    surf = CALLOC_STRUCT(virgl_surface);
 201    if (surf == NULL)
 202       return NULL;
 203
 204    res->clean = FALSE;
 205    handle = virgl_object_assign_handle();
 206    pipe_reference_init(&surf->base.reference, 1);
 207    pipe_resource_reference(&surf->base.texture, resource);
 208    surf->base.context = ctx;
 209    surf->base.format = templ->format;
 210    if (resource->target != PIPE_BUFFER) {
 211       surf->base.width = u_minify(resource->width0, templ->u.tex.level);
 212       surf->base.height = u_minify(resource->height0, templ->u.tex.level);
 213       surf->base.u.tex.level = templ->u.tex.level;
 214       surf->base.u.tex.first_layer = templ->u.tex.first_layer;
 215       surf->base.u.tex.last_layer = templ->u.tex.last_layer;
 216    } else {
 217       surf->base.width = templ->u.buf.last_element - templ->u.buf.first_element + 1;
 218       surf->base.height = resource->height0;
 219       surf->base.u.buf.first_element = templ->u.buf.first_element;
 220       surf->base.u.buf.last_element = templ->u.buf.last_element;
 221    }
 222    virgl_encoder_create_surface(vctx, handle, res, &surf->base);
 223    surf->handle = handle;
 224    return &surf->base;
 225 }
 226
 227 static void virgl_surface_destroy(struct pipe_context *ctx,
 228                                  struct pipe_surface *psurf)
 229 {
 230    struct virgl_context *vctx = virgl_context(ctx);
 231    struct virgl_surface *surf = virgl_surface(psurf);
 232
 233    pipe_resource_reference(&surf->base.texture, NULL);
 234    virgl_encode_delete_object(vctx, surf->handle, VIRGL_OBJECT_SURFACE);
 235    FREE(surf);
 236 }
 237
 238 static void *virgl_create_blend_state(struct pipe_context *ctx,
 239                                               const struct pipe_blend_state *blend_state)
 240 {
 241    struct virgl_context *vctx = virgl_context(ctx);
 242    uint32_t handle;
 243    handle = virgl_object_assign_handle();
 244
 245    virgl_encode_blend_state(vctx, handle, blend_state);
 246    return (void *)(unsigned long)handle;
 247
 248 }
 249
 250 static void virgl_bind_blend_state(struct pipe_context *ctx,
 251                                            void *blend_state)
 252 {
 253    struct virgl_context *vctx = virgl_context(ctx);
 254    uint32_t handle = (unsigned long)blend_state;
 255    virgl_encode_bind_object(vctx, handle, VIRGL_OBJECT_BLEND);
 256 }
 257
 258 static void virgl_delete_blend_state(struct pipe_context *ctx,
 259                                      void *blend_state)
 260 {
 261    struct virgl_context *vctx = virgl_context(ctx);
 262    uint32_t handle = (unsigned long)blend_state;
 263    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_BLEND);
 264 }
 265
 266 static void *virgl_create_depth_stencil_alpha_state(struct pipe_context *ctx,
 267                                                    const struct pipe_depth_stencil_alpha_state *blend_state)
 268 {
 269    struct virgl_context *vctx = virgl_context(ctx);
 270    uint32_t handle;
 271    handle = virgl_object_assign_handle();
 272
 273    virgl_encode_dsa_state(vctx, handle, blend_state);
 274    return (void *)(unsigned long)handle;
 275 }
 276
 277 static void virgl_bind_depth_stencil_alpha_state(struct pipe_context *ctx,
 278                                                 void *blend_state)
 279 {
 280    struct virgl_context *vctx = virgl_context(ctx);
 281    uint32_t handle = (unsigned long)blend_state;
 282    virgl_encode_bind_object(vctx, handle, VIRGL_OBJECT_DSA);
 283 }
 284
 285 static void virgl_delete_depth_stencil_alpha_state(struct pipe_context *ctx,
 286                                                   void *dsa_state)
 287 {
 288    struct virgl_context *vctx = virgl_context(ctx);
 289    uint32_t handle = (unsigned long)dsa_state;
 290    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_DSA);
 291 }
 292
 293 static void *virgl_create_rasterizer_state(struct pipe_context *ctx,
 294                                                    const struct pipe_rasterizer_state *rs_state)
 295 {
 296    struct virgl_context *vctx = virgl_context(ctx);
 297    uint32_t handle;
 298    handle = virgl_object_assign_handle();
 299
 300    virgl_encode_rasterizer_state(vctx, handle, rs_state);
 301    return (void *)(unsigned long)handle;
 302 }
 303
 304 static void virgl_bind_rasterizer_state(struct pipe_context *ctx,
 305                                                 void *rs_state)
 306 {
 307    struct virgl_context *vctx = virgl_context(ctx);
 308    uint32_t handle = (unsigned long)rs_state;
 309
 310    virgl_encode_bind_object(vctx, handle, VIRGL_OBJECT_RASTERIZER);
 311 }
 312
 313 static void virgl_delete_rasterizer_state(struct pipe_context *ctx,
 314                                          void *rs_state)
 315 {
 316    struct virgl_context *vctx = virgl_context(ctx);
 317    uint32_t handle = (unsigned long)rs_state;
 318    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_RASTERIZER);
 319 }
 320
 321 static void virgl_set_framebuffer_state(struct pipe_context *ctx,
 322                                                 const struct pipe_framebuffer_state *state)
 323 {
 324    struct virgl_context *vctx = virgl_context(ctx);
 325
 326    vctx->framebuffer = *state;
 327    virgl_encoder_set_framebuffer_state(vctx, state);
 328    virgl_attach_res_framebuffer(vctx);
 329 }
 330
 331 static void virgl_set_viewport_states(struct pipe_context *ctx,
 332                                      unsigned start_slot,
 333                                      unsigned num_viewports,
 334                                      const struct pipe_viewport_state *state)
 335 {
 336    struct virgl_context *vctx = virgl_context(ctx);
 337    virgl_encoder_set_viewport_states(vctx, start_slot, num_viewports, state);
 338 }
 339
 340 static void *virgl_create_vertex_elements_state(struct pipe_context *ctx,
 341                                                         unsigned num_elements,
 342                                                         const struct pipe_vertex_element *elements)
 343 {
 344    struct virgl_context *vctx = virgl_context(ctx);
 345    uint32_t handle = virgl_object_assign_handle();
 346    virgl_encoder_create_vertex_elements(vctx, handle,
 347                                        num_elements, elements);
 348    return (void*)(unsigned long)handle;
 349
 350 }
 351
 352 static void virgl_delete_vertex_elements_state(struct pipe_context *ctx,
 353                                               void *ve)
 354 {
 355    struct virgl_context *vctx = virgl_context(ctx);
 356    uint32_t handle = (unsigned long)ve;
 357
 358    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_VERTEX_ELEMENTS);
 359 }
 360
 361 static void virgl_bind_vertex_elements_state(struct pipe_context *ctx,
 362                                                      void *ve)
 363 {
 364    struct virgl_context *vctx = virgl_context(ctx);
 365    uint32_t handle = (unsigned long)ve;
 366    virgl_encode_bind_object(vctx, handle, VIRGL_OBJECT_VERTEX_ELEMENTS);
 367 }
 368
 369 static void virgl_set_vertex_buffers(struct pipe_context *ctx,
 370                                     unsigned start_slot,
 371                                     unsigned num_buffers,
 372                                     const struct pipe_vertex_buffer *buffers)
 373 {
 374    struct virgl_context *vctx = virgl_context(ctx);
 375
 376    util_set_vertex_buffers_count(vctx->vertex_buffer,
 377                                  &vctx->num_vertex_buffers,
 378                                  buffers, start_slot, num_buffers);
 379
 380    vctx->vertex_array_dirty = TRUE;
 381 }
 382
 383 static void virgl_hw_set_vertex_buffers(struct pipe_context *ctx)
 384 {
 385    struct virgl_context *vctx = virgl_context(ctx);
 386
 387    if (vctx->vertex_array_dirty) {
 388       virgl_encoder_set_vertex_buffers(vctx, vctx->num_vertex_buffers, vctx->vertex_buffer);
 389       virgl_attach_res_vertex_buffers(vctx);
 390    }
 391 }
 392
 393 static void virgl_set_stencil_ref(struct pipe_context *ctx,
 394                                  const struct pipe_stencil_ref *ref)
 395 {
 396    struct virgl_context *vctx = virgl_context(ctx);
 397    virgl_encoder_set_stencil_ref(vctx, ref);
 398 }
 399
 400 static void virgl_set_blend_color(struct pipe_context *ctx,
 401                                  const struct pipe_blend_color *color)
 402 {
 403    struct virgl_context *vctx = virgl_context(ctx);
 404    virgl_encoder_set_blend_color(vctx, color);
 405 }
 406
 407 static void virgl_set_index_buffer(struct pipe_context *ctx,
 408                                   const struct pipe_index_buffer *ib)
 409 {
 410    struct virgl_context *vctx = virgl_context(ctx);
 411
 412    if (ib) {
 413       pipe_resource_reference(&vctx->index_buffer.buffer, ib->buffer);
 414       memcpy(&vctx->index_buffer, ib, sizeof(*ib));
 415    } else {
 416       pipe_resource_reference(&vctx->index_buffer.buffer, NULL);
 417    }
 418 }
 419
 420 static void virgl_hw_set_index_buffer(struct pipe_context *ctx,
 421                                      struct pipe_index_buffer *ib)
 422 {
 423    struct virgl_context *vctx = virgl_context(ctx);
 424    virgl_encoder_set_index_buffer(vctx, ib);
 425    virgl_attach_res_index_buffer(vctx);
 426 }
 427
 428 static void virgl_set_constant_buffer(struct pipe_context *ctx,
 429                                      uint shader, uint index,
 430                                      struct pipe_constant_buffer *buf)
 431 {
 432    struct virgl_context *vctx = virgl_context(ctx);
 433
 434    if (buf) {
 435       if (!buf->user_buffer){
 436          struct virgl_resource *res = virgl_resource(buf->buffer);
 437          virgl_encoder_set_uniform_buffer(vctx, shader, index, buf->buffer_offset,
 438                                           buf->buffer_size, res);
 439          pipe_resource_reference(&vctx->ubos[shader][index], buf->buffer);
 440          return;
 441       }
 442       pipe_resource_reference(&vctx->ubos[shader][index], NULL);
 443       virgl_encoder_write_constant_buffer(vctx, shader, index, buf->buffer_size / 4, buf->user_buffer);
 444    } else {
 445       virgl_encoder_write_constant_buffer(vctx, shader, index, 0, NULL);
 446       pipe_resource_reference(&vctx->ubos[shader][index], NULL);
 447    }
 448 }
 449
 450 void virgl_transfer_inline_write(struct pipe_context *ctx,
 451                                 struct pipe_resource *res,
 452                                 unsigned level,
 453                                 unsigned usage,
 454                                 const struct pipe_box *box,
 455                                 const void *data,
 456                                 unsigned stride,
 457                                 unsigned layer_stride)
 458 {
 459    struct virgl_context *vctx = virgl_context(ctx);
 460    struct virgl_screen *vs = virgl_screen(ctx->screen);
 461    struct virgl_resource *grres = virgl_resource(res);
 462    struct virgl_buffer *vbuf = virgl_buffer(res);
 463
 464    grres->clean = FALSE;
 465
 466    if (virgl_res_needs_flush_wait(vctx, &vbuf->base, usage)) {
 467       ctx->flush(ctx, NULL, 0);
 468
 469       vs->vws->resource_wait(vs->vws, vbuf->base.hw_res);
 470    }
 471
 472    virgl_encoder_inline_write(vctx, grres, level, usage,
 473                               box, data, stride, layer_stride);
 474 }
 475
 476 static void *virgl_shader_encoder(struct pipe_context *ctx,
 477                                   const struct pipe_shader_state *shader,
 478                                   unsigned type)
 479 {
 480    struct virgl_context *vctx = virgl_context(ctx);
 481    uint32_t handle;
 482    struct tgsi_token *new_tokens;
 483    int ret;
 484
 485    new_tokens = virgl_tgsi_transform(shader->tokens);
 486    if (!new_tokens)
 487       return NULL;
 488
 489    handle = virgl_object_assign_handle();
 490    /* encode VS state */
 491    ret = virgl_encode_shader_state(vctx, handle, type,
 492                                    &shader->stream_output,
 493                                    new_tokens);
 494    if (ret) {
 495       return NULL;
 496    }
 497
 498    FREE(new_tokens);
 499    return (void *)(unsigned long)handle;
 500
 501 }
 502 static void *virgl_create_vs_state(struct pipe_context *ctx,
 503                                    const struct pipe_shader_state *shader)
 504 {
 505    return virgl_shader_encoder(ctx, shader, PIPE_SHADER_VERTEX);
 506 }
 507
 508 static void *virgl_create_gs_state(struct pipe_context *ctx,
 509                                    const struct pipe_shader_state *shader)
 510 {
 511    return virgl_shader_encoder(ctx, shader, PIPE_SHADER_GEOMETRY);
 512 }
 513
 514 static void *virgl_create_fs_state(struct pipe_context *ctx,
 515                                    const struct pipe_shader_state *shader)
 516 {
 517    return virgl_shader_encoder(ctx, shader, PIPE_SHADER_FRAGMENT);
 518 }
 519
 520 static void
 521 virgl_delete_fs_state(struct pipe_context *ctx,
 522                      void *fs)
 523 {
 524    uint32_t handle = (unsigned long)fs;
 525    struct virgl_context *vctx = virgl_context(ctx);
 526
 527    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_SHADER);
 528 }
 529
 530 static void
 531 virgl_delete_gs_state(struct pipe_context *ctx,
 532                      void *gs)
 533 {
 534    uint32_t handle = (unsigned long)gs;
 535    struct virgl_context *vctx = virgl_context(ctx);
 536
 537    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_SHADER);
 538 }
 539
 540 static void
 541 virgl_delete_vs_state(struct pipe_context *ctx,
 542                      void *vs)
 543 {
 544    uint32_t handle = (unsigned long)vs;
 545    struct virgl_context *vctx = virgl_context(ctx);
 546
 547    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_SHADER);
 548 }
 549
 550 static void virgl_bind_vs_state(struct pipe_context *ctx,
 551                                         void *vss)
 552 {
 553    uint32_t handle = (unsigned long)vss;
 554    struct virgl_context *vctx = virgl_context(ctx);
 555
 556    virgl_encode_bind_shader(vctx, handle, PIPE_SHADER_VERTEX);
 557 }
 558
 559 static void virgl_bind_gs_state(struct pipe_context *ctx,
 560                                void *vss)
 561 {
 562    uint32_t handle = (unsigned long)vss;
 563    struct virgl_context *vctx = virgl_context(ctx);
 564
 565    virgl_encode_bind_shader(vctx, handle, PIPE_SHADER_GEOMETRY);
 566 }
 567
 568
 569 static void virgl_bind_fs_state(struct pipe_context *ctx,
 570                                         void *vss)
 571 {
 572    uint32_t handle = (unsigned long)vss;
 573    struct virgl_context *vctx = virgl_context(ctx);
 574
 575    virgl_encode_bind_shader(vctx, handle, PIPE_SHADER_FRAGMENT);
 576 }
 577
 578 static void virgl_clear(struct pipe_context *ctx,
 579                                 unsigned buffers,
 580                                 const union pipe_color_union *color,
 581                                 double depth, unsigned stencil)
 582 {
 583    struct virgl_context *vctx = virgl_context(ctx);
 584
 585    virgl_encode_clear(vctx, buffers, color, depth, stencil);
 586 }
 587
 588 static void virgl_draw_vbo(struct pipe_context *ctx,
 589                                    const struct pipe_draw_info *dinfo)
 590 {
 591    struct virgl_context *vctx = virgl_context(ctx);
 592    struct virgl_screen *rs = virgl_screen(ctx->screen);
 593    struct pipe_index_buffer ib = {};
 594    struct pipe_draw_info info = *dinfo;
 595
 596    if (!(rs->caps.caps.v1.prim_mask & (1 << dinfo->mode))) {
 597       util_primconvert_save_index_buffer(vctx->primconvert, &vctx->index_buffer);
 598       util_primconvert_draw_vbo(vctx->primconvert, dinfo);
 599       return;
 600    }
 601    if (info.indexed) {
 602            pipe_resource_reference(&ib.buffer, vctx->index_buffer.buffer);
 603            ib.user_buffer = vctx->index_buffer.user_buffer;
 604            ib.index_size = vctx->index_buffer.index_size;
 605            ib.offset = vctx->index_buffer.offset + info.start * ib.index_size;
 606
 607            if (ib.user_buffer) {
 608                    u_upload_data(vctx->uploader, 0, info.count * ib.index_size,
 609                                  ib.user_buffer, &ib.offset, &ib.buffer);
 610                    ib.user_buffer = NULL;
 611            }
 612    }
 613
 614    u_upload_unmap(vctx->uploader);
 615
 616    vctx->num_draws++;
 617    virgl_hw_set_vertex_buffers(ctx);
 618    if (info.indexed)
 619       virgl_hw_set_index_buffer(ctx, &ib);
 620
 621    virgl_encoder_draw_vbo(vctx, &info);
 622
 623    pipe_resource_reference(&ib.buffer, NULL);
 624
 625 }
 626
 627 static void virgl_flush_eq(struct virgl_context *ctx, void *closure)
 628 {
 629    struct virgl_screen *rs = virgl_screen(ctx->base.screen);
 630
 631    /* send the buffer to the remote side for decoding */
 632    ctx->num_transfers = ctx->num_draws = 0;
 633    rs->vws->submit_cmd(rs->vws, ctx->cbuf);
 634
 635    virgl_encoder_set_sub_ctx(ctx, ctx->hw_sub_ctx_id);
 636
 637    /* add back current framebuffer resources to reference list? */
 638    virgl_reemit_res(ctx);
 639 }
 640
 641 static void virgl_flush_from_st(struct pipe_context *ctx,
 642                                struct pipe_fence_handle **fence,
 643                                enum pipe_flush_flags flags)
 644 {
 645    struct virgl_context *vctx = virgl_context(ctx);
 646    struct virgl_screen *rs = virgl_screen(ctx->screen);
 647    struct virgl_buffer *buf, *tmp;
 648
 649    if (fence)
 650       *fence = rs->vws->cs_create_fence(rs->vws);
 651
 652    LIST_FOR_EACH_ENTRY_SAFE(buf, tmp, &vctx->to_flush_bufs, flush_list) {
 653       struct pipe_resource *res = &buf->base.u.b;
 654       virgl_buffer_flush(vctx, buf);
 655       list_del(&buf->flush_list);
 656       buf->on_list = FALSE;
 657       pipe_resource_reference(&res, NULL);
 658
 659    }
 660    virgl_flush_eq(vctx, vctx);
 661 }
 662
 663 static struct pipe_sampler_view *virgl_create_sampler_view(struct pipe_context *ctx,
 664                                       struct pipe_resource *texture,
 665                                       const struct pipe_sampler_view *state)
 666 {
 667    struct virgl_context *vctx = virgl_context(ctx);
 668    struct virgl_sampler_view *grview = CALLOC_STRUCT(virgl_sampler_view);
 669    uint32_t handle;
 670    struct virgl_resource *res;
 671
 672    if (state == NULL)
 673       return NULL;
 674
 675    res = virgl_resource(texture);
 676    handle = virgl_object_assign_handle();
 677    virgl_encode_sampler_view(vctx, handle, res, state);
 678
 679    grview->base = *state;
 680    grview->base.reference.count = 1;
 681
 682    grview->base.texture = NULL;
 683    grview->base.context = ctx;
 684    pipe_resource_reference(&grview->base.texture, texture);
 685    grview->handle = handle;
 686    return &grview->base;
 687 }
 688
 689 static void virgl_set_sampler_views(struct pipe_context *ctx,
 690                                    unsigned shader_type,
 691                                    unsigned start_slot,
 692                                    unsigned num_views,
 693                                    struct pipe_sampler_view **views)
 694 {
 695    struct virgl_context *vctx = virgl_context(ctx);
 696    int i;
 697    uint32_t disable_mask = ~((1ull << num_views) - 1);
 698    struct virgl_textures_info *tinfo = &vctx->samplers[shader_type];
 699    uint32_t new_mask = 0;
 700    uint32_t remaining_mask;
 701
 702    remaining_mask = tinfo->enabled_mask & disable_mask;
 703
 704    while (remaining_mask) {
 705       i = u_bit_scan(&remaining_mask);
 706       assert(tinfo->views[i]);
 707
 708       pipe_sampler_view_reference((struct pipe_sampler_view **)&tinfo->views[i], NULL);
 709    }
 710
 711    for (i = 0; i < num_views; i++) {
 712       struct virgl_sampler_view *grview = virgl_sampler_view(views[i]);
 713
 714       if (views[i] == (struct pipe_sampler_view *)tinfo->views[i])
 715          continue;
 716
 717       if (grview) {
 718          new_mask |= 1 << i;
 719          pipe_sampler_view_reference((struct pipe_sampler_view **)&tinfo->views[i], views[i]);
 720       } else {
 721          pipe_sampler_view_reference((struct pipe_sampler_view **)&tinfo->views[i], NULL);
 722          disable_mask |= 1 << i;
 723       }
 724    }
 725
 726    tinfo->enabled_mask &= ~disable_mask;
 727    tinfo->enabled_mask |= new_mask;
 728    virgl_encode_set_sampler_views(vctx, shader_type, start_slot, num_views, tinfo->views);
 729    virgl_attach_res_sampler_views(vctx, shader_type);
 730 }
 731
 732 static void virgl_destroy_sampler_view(struct pipe_context *ctx,
 733                                  struct pipe_sampler_view *view)
 734 {
 735    struct virgl_context *vctx = virgl_context(ctx);
 736    struct virgl_sampler_view *grview = virgl_sampler_view(view);
 737
 738    virgl_encode_delete_object(vctx, grview->handle, VIRGL_OBJECT_SAMPLER_VIEW);
 739    pipe_resource_reference(&view->texture, NULL);
 740    FREE(view);
 741 }
 742
 743 static void *virgl_create_sampler_state(struct pipe_context *ctx,
 744                                         const struct pipe_sampler_state *state)
 745 {
 746    struct virgl_context *vctx = virgl_context(ctx);
 747    uint32_t handle;
 748
 749    handle = virgl_object_assign_handle();
 750
 751    virgl_encode_sampler_state(vctx, handle, state);
 752    return (void *)(unsigned long)handle;
 753 }
 754
 755 static void virgl_delete_sampler_state(struct pipe_context *ctx,
 756                                       void *ss)
 757 {
 758    struct virgl_context *vctx = virgl_context(ctx);
 759    uint32_t handle = (unsigned long)ss;
 760
 761    virgl_encode_delete_object(vctx, handle, VIRGL_OBJECT_SAMPLER_STATE);
 762 }
 763
 764 static void virgl_bind_sampler_states(struct pipe_context *ctx,
 765                                      unsigned shader, unsigned start_slot,
 766                                      unsigned num_samplers,
 767                                      void **samplers)
 768 {
 769    struct virgl_context *vctx = virgl_context(ctx);
 770    uint32_t handles[32];
 771    int i;
 772    for (i = 0; i < num_samplers; i++) {
 773       handles[i] = (unsigned long)(samplers[i]);
 774    }
 775    virgl_encode_bind_sampler_states(vctx, shader, start_slot, num_samplers, handles);
 776 }
 777
 778 static void virgl_set_polygon_stipple(struct pipe_context *ctx,
 779                                      const struct pipe_poly_stipple *ps)
 780 {
 781    struct virgl_context *vctx = virgl_context(ctx);
 782    virgl_encoder_set_polygon_stipple(vctx, ps);
 783 }
 784
 785 static void virgl_set_scissor_states(struct pipe_context *ctx,
 786                                     unsigned start_slot,
 787                                     unsigned num_scissor,
 788                                    const struct pipe_scissor_state *ss)
 789 {
 790    struct virgl_context *vctx = virgl_context(ctx);
 791    virgl_encoder_set_scissor_state(vctx, start_slot, num_scissor, ss);
 792 }
 793
 794 static void virgl_set_sample_mask(struct pipe_context *ctx,
 795                                  unsigned sample_mask)
 796 {
 797    struct virgl_context *vctx = virgl_context(ctx);
 798    virgl_encoder_set_sample_mask(vctx, sample_mask);
 799 }
 800
 801 static void virgl_set_clip_state(struct pipe_context *ctx,
 802                                 const struct pipe_clip_state *clip)
 803 {
 804    struct virgl_context *vctx = virgl_context(ctx);
 805    virgl_encoder_set_clip_state(vctx, clip);
 806 }
 807
 808 static void virgl_resource_copy_region(struct pipe_context *ctx,
 809                                       struct pipe_resource *dst,
 810                                       unsigned dst_level,
 811                                       unsigned dstx, unsigned dsty, unsigned dstz,
 812                                       struct pipe_resource *src,
 813                                       unsigned src_level,
 814                                       const struct pipe_box *src_box)
 815 {
 816    struct virgl_context *vctx = virgl_context(ctx);
 817    struct virgl_resource *dres = virgl_resource(dst);
 818    struct virgl_resource *sres = virgl_resource(src);
 819
 820    dres->clean = FALSE;
 821    virgl_encode_resource_copy_region(vctx, dres,
 822                                     dst_level, dstx, dsty, dstz,
 823                                     sres, src_level,
 824                                     src_box);
 825 }
 826
 827 static void
 828 virgl_flush_resource(struct pipe_context *pipe,
 829                     struct pipe_resource *resource)
 830 {
 831 }
 832
 833 static void virgl_blit(struct pipe_context *ctx,
 834                       const struct pipe_blit_info *blit)
 835 {
 836    struct virgl_context *vctx = virgl_context(ctx);
 837    struct virgl_resource *dres = virgl_resource(blit->dst.resource);
 838    struct virgl_resource *sres = virgl_resource(blit->src.resource);
 839
 840    dres->clean = FALSE;
 841    virgl_encode_blit(vctx, dres, sres,
 842                     blit);
 843 }
 844
 845 static void
 846 virgl_context_destroy( struct pipe_context *ctx )
 847 {
 848    struct virgl_context *vctx = virgl_context(ctx);
 849    struct virgl_screen *rs = virgl_screen(ctx->screen);
 850
 851    vctx->framebuffer.zsbuf = NULL;
 852    vctx->framebuffer.nr_cbufs = 0;
 853    virgl_encoder_destroy_sub_ctx(vctx, vctx->hw_sub_ctx_id);
 854    virgl_flush_eq(vctx, vctx);
 855
 856    rs->vws->cmd_buf_destroy(vctx->cbuf);
 857    if (vctx->uploader)
 858       u_upload_destroy(vctx->uploader);
 859    util_primconvert_destroy(vctx->primconvert);
 860
 861    util_slab_destroy(&vctx->texture_transfer_pool);
 862    FREE(vctx);
 863 }
 864
 865 struct pipe_context *virgl_context_create(struct pipe_screen *pscreen,
 866                                           void *priv,
 867                                           unsigned flags)
 868 {
 869    struct virgl_context *vctx;
 870    struct virgl_screen *rs = virgl_screen(pscreen);
 871    vctx = CALLOC_STRUCT(virgl_context);
 872
 873    vctx->cbuf = rs->vws->cmd_buf_create(rs->vws);
 874    if (!vctx->cbuf) {
 875       FREE(vctx);
 876       return NULL;
 877    }
 878
 879    vctx->base.destroy = virgl_context_destroy;
 880    vctx->base.create_surface = virgl_create_surface;
 881    vctx->base.surface_destroy = virgl_surface_destroy;
 882    vctx->base.set_framebuffer_state = virgl_set_framebuffer_state;
 883    vctx->base.create_blend_state = virgl_create_blend_state;
 884    vctx->base.bind_blend_state = virgl_bind_blend_state;
 885    vctx->base.delete_blend_state = virgl_delete_blend_state;
 886    vctx->base.create_depth_stencil_alpha_state = virgl_create_depth_stencil_alpha_state;
 887    vctx->base.bind_depth_stencil_alpha_state = virgl_bind_depth_stencil_alpha_state;
 888    vctx->base.delete_depth_stencil_alpha_state = virgl_delete_depth_stencil_alpha_state;
 889    vctx->base.create_rasterizer_state = virgl_create_rasterizer_state;
 890    vctx->base.bind_rasterizer_state = virgl_bind_rasterizer_state;
 891    vctx->base.delete_rasterizer_state = virgl_delete_rasterizer_state;
 892
 893    vctx->base.set_viewport_states = virgl_set_viewport_states;
 894    vctx->base.create_vertex_elements_state = virgl_create_vertex_elements_state;
 895    vctx->base.bind_vertex_elements_state = virgl_bind_vertex_elements_state;
 896    vctx->base.delete_vertex_elements_state = virgl_delete_vertex_elements_state;
 897    vctx->base.set_vertex_buffers = virgl_set_vertex_buffers;
 898    vctx->base.set_index_buffer = virgl_set_index_buffer;
 899    vctx->base.set_constant_buffer = virgl_set_constant_buffer;
 900    vctx->base.transfer_inline_write = virgl_transfer_inline_write;
 901
 902    vctx->base.create_vs_state = virgl_create_vs_state;
 903    vctx->base.create_gs_state = virgl_create_gs_state;
 904    vctx->base.create_fs_state = virgl_create_fs_state;
 905
 906    vctx->base.bind_vs_state = virgl_bind_vs_state;
 907    vctx->base.bind_gs_state = virgl_bind_gs_state;
 908    vctx->base.bind_fs_state = virgl_bind_fs_state;
 909
 910    vctx->base.delete_vs_state = virgl_delete_vs_state;
 911    vctx->base.delete_gs_state = virgl_delete_gs_state;
 912    vctx->base.delete_fs_state = virgl_delete_fs_state;
 913
 914    vctx->base.clear = virgl_clear;
 915    vctx->base.draw_vbo = virgl_draw_vbo;
 916    vctx->base.flush = virgl_flush_from_st;
 917    vctx->base.screen = pscreen;
 918    vctx->base.create_sampler_view = virgl_create_sampler_view;
 919    vctx->base.sampler_view_destroy = virgl_destroy_sampler_view;
 920    vctx->base.set_sampler_views = virgl_set_sampler_views;
 921
 922    vctx->base.create_sampler_state = virgl_create_sampler_state;
 923    vctx->base.delete_sampler_state = virgl_delete_sampler_state;
 924    vctx->base.bind_sampler_states = virgl_bind_sampler_states;
 925
 926    vctx->base.set_polygon_stipple = virgl_set_polygon_stipple;
 927    vctx->base.set_scissor_states = virgl_set_scissor_states;
 928    vctx->base.set_sample_mask = virgl_set_sample_mask;
 929    vctx->base.set_stencil_ref = virgl_set_stencil_ref;
 930    vctx->base.set_clip_state = virgl_set_clip_state;
 931
 932    vctx->base.set_blend_color = virgl_set_blend_color;
 933
 934    vctx->base.resource_copy_region = virgl_resource_copy_region;
 935    vctx->base.flush_resource = virgl_flush_resource;
 936    vctx->base.blit =  virgl_blit;
 937
 938    virgl_init_context_resource_functions(&vctx->base);
 939    virgl_init_query_functions(vctx);
 940    virgl_init_so_functions(vctx);
 941
 942    list_inithead(&vctx->to_flush_bufs);
 943    util_slab_create(&vctx->texture_transfer_pool, sizeof(struct virgl_transfer),
 944                     16, UTIL_SLAB_SINGLETHREADED);
 945
 946    vctx->primconvert = util_primconvert_create(&vctx->base, rs->caps.caps.v1.prim_mask);
 947    vctx->uploader = u_upload_create(&vctx->base, 1024 * 1024, 256,
 948                                      PIPE_BIND_INDEX_BUFFER);
 949    if (!vctx->uploader)
 950            goto fail;
 951
 952    vctx->hw_sub_ctx_id = rs->sub_ctx_id++;
 953    virgl_encoder_create_sub_ctx(vctx, vctx->hw_sub_ctx_id);
 954
 955    virgl_encoder_set_sub_ctx(vctx, vctx->hw_sub_ctx_id);
 956    return &vctx->base;
 957 fail:
 958    return NULL;
 959 }