src/gallium/drivers/etnaviv/etnaviv_context.c

   1 /*
   2  * Copyright (c) 2012-2015 Etnaviv Project
   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  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Wladimir J. van der Laan <laanwj@gmail.com>
  25  *    Christian Gmeiner <christian.gmeiner@gmail.com>
  26  */
  27
  28 #include "etnaviv_context.h"
  29
  30 #include "etnaviv_blend.h"
  31 #include "etnaviv_clear_blit.h"
  32 #include "etnaviv_compiler.h"
  33 #include "etnaviv_debug.h"
  34 #include "etnaviv_emit.h"
  35 #include "etnaviv_fence.h"
  36 #include "etnaviv_query.h"
  37 #include "etnaviv_query_hw.h"
  38 #include "etnaviv_rasterizer.h"
  39 #include "etnaviv_resource.h"
  40 #include "etnaviv_screen.h"
  41 #include "etnaviv_shader.h"
  42 #include "etnaviv_state.h"
  43 #include "etnaviv_surface.h"
  44 #include "etnaviv_texture.h"
  45 #include "etnaviv_transfer.h"
  46 #include "etnaviv_translate.h"
  47 #include "etnaviv_zsa.h"
  48
  49 #include "pipe/p_context.h"
  50 #include "pipe/p_state.h"
  51 #include "util/hash_table.h"
  52 #include "util/u_blitter.h"
  53 #include "util/u_helpers.h"
  54 #include "util/u_memory.h"
  55 #include "util/u_prim.h"
  56 #include "util/u_upload_mgr.h"
  57
  58 #include "hw/common.xml.h"
  59
  60 static void
  61 etna_context_destroy(struct pipe_context *pctx)
  62 {
  63    struct etna_context *ctx = etna_context(pctx);
  64    struct etna_screen *screen = ctx->screen;
  65
  66    mtx_lock(&ctx->lock);
  67    if (ctx->used_resources_read) {
  68
  69       /*
  70        * There should be no resources tracked in the context when it's being
  71        * destroyed. Be sure there are none to avoid memory leaks on buggy
  72        * programs.
  73        */
  74       set_foreach(ctx->used_resources_read, entry) {
  75          struct etna_resource *rsc = (struct etna_resource *)entry->key;
  76
  77          _mesa_set_remove_key(rsc->pending_ctx, ctx);
  78       }
  79       _mesa_set_destroy(ctx->used_resources_read, NULL);
  80
  81    }
  82    if (ctx->used_resources_write) {
  83
  84       /*
  85        * There should be no resources tracked in the context when it's being
  86        * destroyed. Be sure there are none to avoid memory leaks on buggy
  87        * programs.
  88        */
  89       set_foreach(ctx->used_resources_write, entry) {
  90          struct etna_resource *rsc = (struct etna_resource *)entry->key;
  91
  92          _mesa_set_remove_key(rsc->pending_ctx, ctx);
  93       }
  94       _mesa_set_destroy(ctx->used_resources_write, NULL);
  95
  96    }
  97    mtx_unlock(&ctx->lock);
  98
  99    if (ctx->dummy_rt)
 100       etna_bo_del(ctx->dummy_rt);
 101
 102    util_copy_framebuffer_state(&ctx->framebuffer_s, NULL);
 103
 104    if (ctx->primconvert)
 105       util_primconvert_destroy(ctx->primconvert);
 106
 107    if (ctx->blitter)
 108       util_blitter_destroy(ctx->blitter);
 109
 110    if (pctx->stream_uploader)
 111       u_upload_destroy(pctx->stream_uploader);
 112
 113    if (ctx->stream)
 114       etna_cmd_stream_del(ctx->stream);
 115
 116    slab_destroy_child(&ctx->transfer_pool);
 117
 118    if (ctx->in_fence_fd != -1)
 119       close(ctx->in_fence_fd);
 120
 121    mtx_destroy(&ctx->lock);
 122
 123    FREE(pctx);
 124 }
 125
 126 /* Update render state where needed based on draw operation */
 127 static void
 128 etna_update_state_for_draw(struct etna_context *ctx, const struct pipe_draw_info *info)
 129 {
 130    /* Handle primitive restart:
 131     * - If not an indexed draw, we don't care about the state of the primitive restart bit.
 132     * - Otherwise, set the bit in INDEX_STREAM_CONTROL in the index buffer state
 133     *   accordingly
 134     * - If the value of the INDEX_STREAM_CONTROL register changed due to this, or
 135     *   primitive restart is enabled and the restart index changed, mark the index
 136     *   buffer state as dirty
 137     */
 138
 139    if (info->index_size) {
 140       uint32_t new_control = ctx->index_buffer.FE_INDEX_STREAM_CONTROL;
 141
 142       if (info->primitive_restart)
 143          new_control |= VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
 144       else
 145          new_control &= ~VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
 146
 147       if (ctx->index_buffer.FE_INDEX_STREAM_CONTROL != new_control ||
 148           (info->primitive_restart && ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX != info->restart_index)) {
 149          ctx->index_buffer.FE_INDEX_STREAM_CONTROL = new_control;
 150          ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX = info->restart_index;
 151          ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 152       }
 153    }
 154 }
 155
 156 static bool
 157 etna_get_vs(struct etna_context *ctx, struct etna_shader_key key)
 158 {
 159    const struct etna_shader_variant *old = ctx->shader.vs;
 160
 161    ctx->shader.vs = etna_shader_variant(ctx->shader.bind_vs, key, &ctx->debug);
 162
 163    if (!ctx->shader.vs)
 164       return false;
 165
 166    if (old != ctx->shader.vs)
 167       ctx->dirty |= ETNA_DIRTY_SHADER;
 168
 169    return true;
 170 }
 171
 172 static bool
 173 etna_get_fs(struct etna_context *ctx, struct etna_shader_key key)
 174 {
 175    const struct etna_shader_variant *old = ctx->shader.fs;
 176
 177    ctx->shader.fs = etna_shader_variant(ctx->shader.bind_fs, key, &ctx->debug);
 178
 179    if (!ctx->shader.fs)
 180       return false;
 181
 182    if (old != ctx->shader.fs)
 183       ctx->dirty |= ETNA_DIRTY_SHADER;
 184
 185    return true;
 186 }
 187
 188 static void
 189 etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 190 {
 191    struct etna_context *ctx = etna_context(pctx);
 192    struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
 193    uint32_t draw_mode;
 194    unsigned i;
 195
 196    if (!info->count_from_stream_output && !info->indirect &&
 197        !info->primitive_restart &&
 198        !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
 199       return;
 200
 201    if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
 202       return; /* Nothing to do */
 203
 204    if (!(ctx->prim_hwsupport & (1 << info->mode))) {
 205       struct primconvert_context *primconvert = ctx->primconvert;
 206       util_primconvert_save_rasterizer_state(primconvert, ctx->rasterizer);
 207       util_primconvert_draw_vbo(primconvert, info);
 208       return;
 209    }
 210
 211    int prims = u_decomposed_prims_for_vertices(info->mode, info->count);
 212    if (unlikely(prims <= 0)) {
 213       DBG("Invalid draw primitive mode=%i or no primitives to be drawn", info->mode);
 214       return;
 215    }
 216
 217    draw_mode = translate_draw_mode(info->mode);
 218    if (draw_mode == ETNA_NO_MATCH) {
 219       BUG("Unsupported draw mode");
 220       return;
 221    }
 222
 223    /* Upload a user index buffer. */
 224    unsigned index_offset = 0;
 225    struct pipe_resource *indexbuf = NULL;
 226
 227    if (info->index_size) {
 228       indexbuf = info->has_user_indices ? NULL : info->index.resource;
 229       if (info->has_user_indices &&
 230           !util_upload_index_buffer(pctx, info, &indexbuf, &index_offset)) {
 231          BUG("Index buffer upload failed.");
 232          return;
 233       }
 234       /* Add start to index offset, when rendering indexed */
 235       index_offset += info->start * info->index_size;
 236
 237       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = etna_resource(indexbuf)->bo;
 238       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = index_offset;
 239       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = ETNA_RELOC_READ;
 240       ctx->index_buffer.FE_INDEX_STREAM_CONTROL = translate_index_size(info->index_size);
 241
 242       if (!ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
 243          BUG("Unsupported or no index buffer");
 244          return;
 245       }
 246    } else {
 247       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = 0;
 248       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = 0;
 249       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = 0;
 250       ctx->index_buffer.FE_INDEX_STREAM_CONTROL = 0;
 251    }
 252    ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 253
 254    struct etna_shader_key key = {
 255       .front_ccw = ctx->rasterizer->front_ccw,
 256    };
 257
 258    if (pfb->cbufs[0])
 259       key.frag_rb_swap = !!translate_rs_format_rb_swap(pfb->cbufs[0]->format);
 260
 261    if (!etna_get_vs(ctx, key) || !etna_get_fs(ctx, key)) {
 262       BUG("compiled shaders are not okay");
 263       return;
 264    }
 265
 266    /* Update any derived state */
 267    if (!etna_state_update(ctx))
 268       return;
 269
 270    mtx_lock(&ctx->lock);
 271
 272    /*
 273     * Figure out the buffers/features we need:
 274     */
 275    if (etna_depth_enabled(ctx))
 276       resource_written(ctx, pfb->zsbuf->texture);
 277
 278    if (etna_stencil_enabled(ctx))
 279       resource_written(ctx, pfb->zsbuf->texture);
 280
 281    for (i = 0; i < pfb->nr_cbufs; i++) {
 282       struct pipe_resource *surf;
 283
 284       if (!pfb->cbufs[i])
 285          continue;
 286
 287       surf = pfb->cbufs[i]->texture;
 288       resource_written(ctx, surf);
 289    }
 290
 291    /* Mark constant buffers as being read */
 292    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX].buffer);
 293    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].buffer);
 294
 295    /* Mark VBOs as being read */
 296    foreach_bit(i, ctx->vertex_buffer.enabled_mask) {
 297       assert(!ctx->vertex_buffer.vb[i].is_user_buffer);
 298       resource_read(ctx, ctx->vertex_buffer.vb[i].buffer.resource);
 299    }
 300
 301    /* Mark index buffer as being read */
 302    resource_read(ctx, indexbuf);
 303
 304    /* Mark textures as being read */
 305    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 306       if (ctx->sampler_view[i]) {
 307           resource_read(ctx, ctx->sampler_view[i]->texture);
 308
 309          /* if texture was modified since the last update,
 310           * we need to clear the texture cache and possibly
 311           * resolve/update ts
 312           */
 313          etna_update_sampler_source(ctx->sampler_view[i], i);
 314       }
 315    }
 316
 317    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 318       resource_written(ctx, hq->prsc);
 319
 320    ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
 321    ctx->stats.draw_calls++;
 322
 323    /* Update state for this draw operation */
 324    etna_update_state_for_draw(ctx, info);
 325
 326    /* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
 327    etna_emit_state(ctx);
 328
 329    if (ctx->specs.halti >= 2) {
 330       /* On HALTI2+ (GC3000 and higher) only use instanced drawing commands, as the blob does */
 331       etna_draw_instanced(ctx->stream, info->index_size, draw_mode, 1,
 332          info->count, info->index_size ? info->index_bias : info->start);
 333    } else {
 334       if (info->index_size)
 335          etna_draw_indexed_primitives(ctx->stream, draw_mode, 0, prims, info->index_bias);
 336       else
 337          etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
 338    }
 339
 340    if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
 341       /* Stall the FE after every draw operation.  This allows better
 342        * debug of GPU hang conditions, as the FE will indicate which
 343        * draw op has caused the hang. */
 344       etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
 345    }
 346    mtx_unlock(&ctx->lock);
 347
 348    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
 349       pctx->flush(pctx, NULL, 0);
 350
 351    if (ctx->framebuffer_s.cbufs[0])
 352       etna_resource(ctx->framebuffer_s.cbufs[0]->texture)->seqno++;
 353    if (ctx->framebuffer_s.zsbuf)
 354       etna_resource(ctx->framebuffer_s.zsbuf->texture)->seqno++;
 355    if (info->index_size && indexbuf != info->index.resource)
 356       pipe_resource_reference(&indexbuf, NULL);
 357 }
 358
 359 static void etna_reset_gpu_state(struct etna_context *ctx)
 360 {
 361    struct etna_cmd_stream *stream = ctx->stream;
 362
 363    etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
 364    etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
 365    /* blob sets this to 0x40000031 on GC7000, seems to make no difference,
 366     * but keep it in mind if depth behaves strangely. */
 367    etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
 368    etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
 369    etna_set_state(stream, VIVS_PA_FLAGS, 0x00000000); /* blob sets ZCONVERT_BYPASS on GC3000+, this messes up z for us */
 370    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A80, 0x38a01404);
 371    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A84, fui(8192.0));
 372    etna_set_state(stream, VIVS_PA_ZFARCLIPPING, 0x00000000);
 373    etna_set_state(stream, VIVS_RA_HDEPTH_CONTROL, 0x00007000);
 374    etna_set_state(stream, VIVS_PE_STENCIL_CONFIG_EXT2, 0x00000000);
 375    etna_set_state(stream, VIVS_PS_CONTROL_EXT, 0x00000000);
 376
 377    /* There is no HALTI0 specific state */
 378    if (ctx->specs.halti >= 1) { /* Only on HALTI1+ */
 379       etna_set_state(stream, VIVS_VS_HALTI1_UNK00884, 0x00000808);
 380    }
 381    if (ctx->specs.halti >= 2) { /* Only on HALTI2+ */
 382       etna_set_state(stream, VIVS_RA_UNK00E0C, 0x00000000);
 383    }
 384    if (ctx->specs.halti >= 3) { /* Only on HALTI3+ */
 385       etna_set_state(stream, VIVS_PS_HALTI3_UNK0103C, 0x76543210);
 386    }
 387    if (ctx->specs.halti >= 4) { /* Only on HALTI4+ */
 388       etna_set_state(stream, VIVS_PS_MSAA_CONFIG, 0x6fffffff & 0xf70fffff & 0xfff6ffff &
 389                                                   0xffff6fff & 0xfffff6ff & 0xffffff7f);
 390       etna_set_state(stream, VIVS_PE_HALTI4_UNK014C0, 0x00000000);
 391    }
 392    if (ctx->specs.halti >= 5) { /* Only on HALTI5+ */
 393       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_UNK14C40, 0x00000001);
 394       etna_set_state(stream, VIVS_FE_HALTI5_UNK007D8, 0x00000002);
 395       etna_set_state(stream, VIVS_FE_HALTI5_ID_CONFIG, 0x00000000);
 396       etna_set_state(stream, VIVS_PS_SAMPLER_BASE, 0x00000000);
 397       etna_set_state(stream, VIVS_VS_SAMPLER_BASE, 0x00000020);
 398       etna_set_state(stream, VIVS_SH_CONFIG, VIVS_SH_CONFIG_RTNE_ROUNDING);
 399    } else { /* Only on pre-HALTI5 */
 400       etna_set_state(stream, VIVS_GL_UNK03834, 0x00000000);
 401       etna_set_state(stream, VIVS_GL_UNK03838, 0x00000000);
 402       etna_set_state(stream, VIVS_GL_UNK03854, 0x00000000);
 403    }
 404
 405    if (!ctx->specs.use_blt) {
 406       /* Enable SINGLE_BUFFER for resolve, if supported */
 407       etna_set_state(stream, VIVS_RS_SINGLE_BUFFER, COND(ctx->specs.single_buffer, VIVS_RS_SINGLE_BUFFER_ENABLE));
 408    }
 409
 410    ctx->dirty = ~0L;
 411    ctx->dirty_sampler_views = ~0L;
 412 }
 413
 414 static void
 415 etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
 416            enum pipe_flush_flags flags)
 417 {
 418    struct etna_context *ctx = etna_context(pctx);
 419    struct etna_screen *screen = ctx->screen;
 420    int out_fence_fd = -1;
 421
 422    mtx_lock(&ctx->lock);
 423
 424    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 425       etna_hw_query_suspend(hq, ctx);
 426
 427    etna_cmd_stream_flush(ctx->stream, ctx->in_fence_fd,
 428                           (flags & PIPE_FLUSH_FENCE_FD) ? &out_fence_fd : NULL);
 429
 430    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 431       etna_hw_query_resume(hq, ctx);
 432
 433    if (fence)
 434       *fence = etna_fence_create(pctx, out_fence_fd);
 435
 436    /*
 437    * Go through all _resources_ pending in this _context_ and mark them as
 438    * not pending in this _context_ anymore, since they were just flushed.
 439    */
 440    set_foreach(ctx->used_resources_read, entry) {
 441       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 442       struct pipe_resource *referenced = &rsc->base;
 443
 444       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 445
 446       pipe_resource_reference(&referenced, NULL);
 447    }
 448    _mesa_set_clear(ctx->used_resources_read, NULL);
 449
 450    set_foreach(ctx->used_resources_write, entry) {
 451       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 452       struct pipe_resource *referenced = &rsc->base;
 453
 454       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 455
 456       pipe_resource_reference(&referenced, NULL);
 457    }
 458    _mesa_set_clear(ctx->used_resources_write, NULL);
 459
 460    etna_reset_gpu_state(ctx);
 461    mtx_unlock(&ctx->lock);
 462 }
 463
 464 static void
 465 etna_context_force_flush(struct etna_cmd_stream *stream, void *priv)
 466 {
 467    struct pipe_context *pctx = priv;
 468
 469    pctx->flush(pctx, NULL, 0);
 470
 471 }
 472
 473 static void
 474 etna_set_debug_callback(struct pipe_context *pctx,
 475                         const struct pipe_debug_callback *cb)
 476 {
 477    struct etna_context *ctx = etna_context(pctx);
 478
 479    if (cb)
 480       ctx->debug = *cb;
 481    else
 482       memset(&ctx->debug, 0, sizeof(ctx->debug));
 483 }
 484
 485 struct pipe_context *
 486 etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 487 {
 488    struct etna_context *ctx = CALLOC_STRUCT(etna_context);
 489    struct etna_screen *screen;
 490    struct pipe_context *pctx;
 491
 492    if (ctx == NULL)
 493       return NULL;
 494
 495    pctx = &ctx->base;
 496    pctx->priv = ctx;
 497    pctx->screen = pscreen;
 498    pctx->stream_uploader = u_upload_create_default(pctx);
 499    if (!pctx->stream_uploader)
 500       goto fail;
 501    pctx->const_uploader = pctx->stream_uploader;
 502
 503    screen = etna_screen(pscreen);
 504    ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000,
 505                                      &etna_context_force_flush, pctx);
 506    if (ctx->stream == NULL)
 507       goto fail;
 508
 509    ctx->used_resources_read = _mesa_set_create(NULL, _mesa_hash_pointer,
 510                                           _mesa_key_pointer_equal);
 511    if (!ctx->used_resources_read)
 512       goto fail;
 513
 514    ctx->used_resources_write = _mesa_set_create(NULL, _mesa_hash_pointer,
 515                                           _mesa_key_pointer_equal);
 516    if (!ctx->used_resources_write)
 517       goto fail;
 518
 519    mtx_init(&ctx->lock, mtx_recursive);
 520
 521    /* context ctxate setup */
 522    ctx->specs = screen->specs;
 523    ctx->screen = screen;
 524    /* need some sane default in case state tracker doesn't set some state: */
 525    ctx->sample_mask = 0xffff;
 526
 527    /*  Set sensible defaults for state */
 528    etna_reset_gpu_state(ctx);
 529
 530    ctx->in_fence_fd = -1;
 531
 532    pctx->destroy = etna_context_destroy;
 533    pctx->draw_vbo = etna_draw_vbo;
 534    pctx->flush = etna_flush;
 535    pctx->set_debug_callback = etna_set_debug_callback;
 536    pctx->create_fence_fd = etna_create_fence_fd;
 537    pctx->fence_server_sync = etna_fence_server_sync;
 538
 539    /* creation of compile states */
 540    pctx->create_blend_state = etna_blend_state_create;
 541    pctx->create_rasterizer_state = etna_rasterizer_state_create;
 542    pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
 543
 544    etna_clear_blit_init(pctx);
 545    etna_query_context_init(pctx);
 546    etna_state_init(pctx);
 547    etna_surface_init(pctx);
 548    etna_shader_init(pctx);
 549    etna_texture_init(pctx);
 550    etna_transfer_init(pctx);
 551
 552    ctx->blitter = util_blitter_create(pctx);
 553    if (!ctx->blitter)
 554       goto fail;
 555
 556    /* Generate the bitmask of supported draw primitives. */
 557    ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
 558                          1 << PIPE_PRIM_LINES |
 559                          1 << PIPE_PRIM_LINE_STRIP |
 560                          1 << PIPE_PRIM_TRIANGLES |
 561                          1 << PIPE_PRIM_TRIANGLE_FAN;
 562
 563    /* TODO: The bug relates only to indexed draws, but here we signal
 564     * that there is no support for triangle strips at all. This should
 565     * be refined.
 566     */
 567    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, BUG_FIXES8))
 568       ctx->prim_hwsupport |= 1 << PIPE_PRIM_TRIANGLE_STRIP;
 569
 570    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
 571       ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
 572
 573    ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
 574    if (!ctx->primconvert)
 575       goto fail;
 576
 577    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
 578    list_inithead(&ctx->active_hw_queries);
 579
 580    /* create dummy RT buffer, used when rendering with no color buffer */
 581    ctx->dummy_rt = etna_bo_new(ctx->screen->dev, 64 * 64 * 4,
 582                                DRM_ETNA_GEM_CACHE_WC);
 583    if (!ctx->dummy_rt)
 584       goto fail;
 585
 586    ctx->dummy_rt_reloc.bo = ctx->dummy_rt;
 587    ctx->dummy_rt_reloc.offset = 0;
 588    ctx->dummy_rt_reloc.flags = ETNA_RELOC_READ | ETNA_RELOC_WRITE;
 589
 590    return pctx;
 591
 592 fail:
 593    pctx->destroy(pctx);
 594
 595    return NULL;
 596 }