src/gallium/drivers/zink/zink_context.c

   1 /*
   2  * Copyright 2018 Collabora Ltd.
   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 "zink_context.h"
  25
  26 #include "zink_batch.h"
  27 #include "zink_compiler.h"
  28 #include "zink_fence.h"
  29 #include "zink_framebuffer.h"
  30 #include "zink_helpers.h"
  31 #include "zink_pipeline.h"
  32 #include "zink_render_pass.h"
  33 #include "zink_resource.h"
  34 #include "zink_screen.h"
  35 #include "zink_state.h"
  36 #include "zink_surface.h"
  37
  38 #include "indices/u_primconvert.h"
  39 #include "util/u_blitter.h"
  40 #include "util/u_debug.h"
  41 #include "util/format/u_format.h"
  42 #include "util/u_framebuffer.h"
  43 #include "util/u_helpers.h"
  44 #include "util/u_inlines.h"
  45
  46 #include "nir.h"
  47
  48 #include "util/u_memory.h"
  49 #include "util/u_upload_mgr.h"
  50
  51 static void
  52 zink_context_destroy(struct pipe_context *pctx)
  53 {
  54    struct zink_context *ctx = zink_context(pctx);
  55    struct zink_screen *screen = zink_screen(pctx->screen);
  56
  57    if (vkQueueWaitIdle(ctx->queue) != VK_SUCCESS)
  58       debug_printf("vkQueueWaitIdle failed\n");
  59
  60    for (int i = 0; i < ARRAY_SIZE(ctx->batches); ++i)
  61       vkFreeCommandBuffers(screen->dev, ctx->cmdpool, 1, &ctx->batches[i].cmdbuf);
  62    vkDestroyCommandPool(screen->dev, ctx->cmdpool, NULL);
  63
  64    util_primconvert_destroy(ctx->primconvert);
  65    u_upload_destroy(pctx->stream_uploader);
  66    slab_destroy_child(&ctx->transfer_pool);
  67    util_blitter_destroy(ctx->blitter);
  68    FREE(ctx);
  69 }
  70
  71 static VkSamplerMipmapMode
  72 sampler_mipmap_mode(enum pipe_tex_mipfilter filter)
  73 {
  74    switch (filter) {
  75    case PIPE_TEX_MIPFILTER_NEAREST: return VK_SAMPLER_MIPMAP_MODE_NEAREST;
  76    case PIPE_TEX_MIPFILTER_LINEAR: return VK_SAMPLER_MIPMAP_MODE_LINEAR;
  77    case PIPE_TEX_MIPFILTER_NONE:
  78       unreachable("PIPE_TEX_MIPFILTER_NONE should be dealt with earlier");
  79    }
  80    unreachable("unexpected filter");
  81 }
  82
  83 static VkSamplerAddressMode
  84 sampler_address_mode(enum pipe_tex_wrap filter)
  85 {
  86    switch (filter) {
  87    case PIPE_TEX_WRAP_REPEAT: return VK_SAMPLER_ADDRESS_MODE_REPEAT;
  88    case PIPE_TEX_WRAP_CLAMP: return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; /* not technically correct, but kinda works */
  89    case PIPE_TEX_WRAP_CLAMP_TO_EDGE: return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
  90    case PIPE_TEX_WRAP_CLAMP_TO_BORDER: return VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER;
  91    case PIPE_TEX_WRAP_MIRROR_REPEAT: return VK_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT;
  92    case PIPE_TEX_WRAP_MIRROR_CLAMP: return VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE; /* not technically correct, but kinda works */
  93    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: return VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE;
  94    case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: return VK_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE; /* not technically correct, but kinda works */
  95    }
  96    unreachable("unexpected wrap");
  97 }
  98
  99 static VkCompareOp
 100 compare_op(enum pipe_compare_func op)
 101 {
 102    switch (op) {
 103       case PIPE_FUNC_NEVER: return VK_COMPARE_OP_NEVER;
 104       case PIPE_FUNC_LESS: return VK_COMPARE_OP_LESS;
 105       case PIPE_FUNC_EQUAL: return VK_COMPARE_OP_EQUAL;
 106       case PIPE_FUNC_LEQUAL: return VK_COMPARE_OP_LESS_OR_EQUAL;
 107       case PIPE_FUNC_GREATER: return VK_COMPARE_OP_GREATER;
 108       case PIPE_FUNC_NOTEQUAL: return VK_COMPARE_OP_NOT_EQUAL;
 109       case PIPE_FUNC_GEQUAL: return VK_COMPARE_OP_GREATER_OR_EQUAL;
 110       case PIPE_FUNC_ALWAYS: return VK_COMPARE_OP_ALWAYS;
 111    }
 112    unreachable("unexpected compare");
 113 }
 114
 115 static void *
 116 zink_create_sampler_state(struct pipe_context *pctx,
 117                           const struct pipe_sampler_state *state)
 118 {
 119    struct zink_screen *screen = zink_screen(pctx->screen);
 120
 121    VkSamplerCreateInfo sci = {};
 122    sci.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
 123    sci.magFilter = zink_filter(state->mag_img_filter);
 124    sci.minFilter = zink_filter(state->min_img_filter);
 125
 126    if (state->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
 127       sci.mipmapMode = sampler_mipmap_mode(state->min_mip_filter);
 128       sci.minLod = state->min_lod;
 129       sci.maxLod = state->max_lod;
 130    } else {
 131       sci.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
 132       sci.minLod = 0;
 133       sci.maxLod = 0;
 134    }
 135
 136    sci.addressModeU = sampler_address_mode(state->wrap_s);
 137    sci.addressModeV = sampler_address_mode(state->wrap_t);
 138    sci.addressModeW = sampler_address_mode(state->wrap_r);
 139    sci.mipLodBias = state->lod_bias;
 140
 141    if (state->compare_mode == PIPE_TEX_COMPARE_NONE)
 142       sci.compareOp = VK_COMPARE_OP_NEVER;
 143    else {
 144       sci.compareOp = compare_op(state->compare_func);
 145       sci.compareEnable = VK_TRUE;
 146    }
 147
 148    sci.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK; // TODO
 149    sci.unnormalizedCoordinates = !state->normalized_coords;
 150
 151    if (state->max_anisotropy > 1) {
 152       sci.maxAnisotropy = state->max_anisotropy;
 153       sci.anisotropyEnable = VK_TRUE;
 154    }
 155
 156    VkSampler *sampler = CALLOC(1, sizeof(VkSampler));
 157    if (!sampler)
 158       return NULL;
 159
 160    if (vkCreateSampler(screen->dev, &sci, NULL, sampler) != VK_SUCCESS) {
 161       FREE(sampler);
 162       return NULL;
 163    }
 164
 165    return sampler;
 166 }
 167
 168 static void
 169 zink_bind_sampler_states(struct pipe_context *pctx,
 170                          enum pipe_shader_type shader,
 171                          unsigned start_slot,
 172                          unsigned num_samplers,
 173                          void **samplers)
 174 {
 175    struct zink_context *ctx = zink_context(pctx);
 176    for (unsigned i = 0; i < num_samplers; ++i) {
 177       VkSampler *sampler = samplers[i];
 178       ctx->sampler_states[shader][start_slot + i] = sampler;
 179       ctx->samplers[shader][start_slot + i] = sampler ? *sampler : VK_NULL_HANDLE;
 180    }
 181    ctx->num_samplers[shader] = start_slot + num_samplers;
 182 }
 183
 184 static void
 185 zink_delete_sampler_state(struct pipe_context *pctx,
 186                           void *sampler_state)
 187 {
 188    struct zink_batch *batch = zink_curr_batch(zink_context(pctx));
 189    util_dynarray_append(&batch->zombie_samplers, VkSampler,
 190                         *(VkSampler *)sampler_state);
 191    FREE(sampler_state);
 192 }
 193
 194
 195 static VkImageViewType
 196 image_view_type(enum pipe_texture_target target)
 197 {
 198    switch (target) {
 199    case PIPE_TEXTURE_1D: return VK_IMAGE_VIEW_TYPE_1D;
 200    case PIPE_TEXTURE_1D_ARRAY: return VK_IMAGE_VIEW_TYPE_1D_ARRAY;
 201    case PIPE_TEXTURE_2D: return VK_IMAGE_VIEW_TYPE_2D;
 202    case PIPE_TEXTURE_2D_ARRAY: return VK_IMAGE_VIEW_TYPE_2D_ARRAY;
 203    case PIPE_TEXTURE_CUBE: return VK_IMAGE_VIEW_TYPE_CUBE;
 204    case PIPE_TEXTURE_CUBE_ARRAY: return VK_IMAGE_VIEW_TYPE_CUBE_ARRAY;
 205    case PIPE_TEXTURE_3D: return VK_IMAGE_VIEW_TYPE_3D;
 206    case PIPE_TEXTURE_RECT: return VK_IMAGE_VIEW_TYPE_2D;
 207    default:
 208       unreachable("unexpected target");
 209    }
 210 }
 211
 212 static VkComponentSwizzle
 213 component_mapping(enum pipe_swizzle swizzle)
 214 {
 215    switch (swizzle) {
 216    case PIPE_SWIZZLE_X: return VK_COMPONENT_SWIZZLE_R;
 217    case PIPE_SWIZZLE_Y: return VK_COMPONENT_SWIZZLE_G;
 218    case PIPE_SWIZZLE_Z: return VK_COMPONENT_SWIZZLE_B;
 219    case PIPE_SWIZZLE_W: return VK_COMPONENT_SWIZZLE_A;
 220    case PIPE_SWIZZLE_0: return VK_COMPONENT_SWIZZLE_ZERO;
 221    case PIPE_SWIZZLE_1: return VK_COMPONENT_SWIZZLE_ONE;
 222    case PIPE_SWIZZLE_NONE: return VK_COMPONENT_SWIZZLE_IDENTITY; // ???
 223    default:
 224       unreachable("unexpected swizzle");
 225    }
 226 }
 227
 228 static VkImageAspectFlags
 229 sampler_aspect_from_format(enum pipe_format fmt)
 230 {
 231    if (util_format_is_depth_or_stencil(fmt)) {
 232       const struct util_format_description *desc = util_format_description(fmt);
 233       if (util_format_has_depth(desc))
 234          return VK_IMAGE_ASPECT_DEPTH_BIT;
 235       assert(util_format_has_stencil(desc));
 236       return VK_IMAGE_ASPECT_STENCIL_BIT;
 237    } else
 238      return VK_IMAGE_ASPECT_COLOR_BIT;
 239 }
 240
 241 static struct pipe_sampler_view *
 242 zink_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *pres,
 243                          const struct pipe_sampler_view *state)
 244 {
 245    struct zink_screen *screen = zink_screen(pctx->screen);
 246    struct zink_resource *res = zink_resource(pres);
 247    struct zink_sampler_view *sampler_view = CALLOC_STRUCT(zink_sampler_view);
 248
 249    sampler_view->base = *state;
 250    sampler_view->base.texture = NULL;
 251    pipe_resource_reference(&sampler_view->base.texture, pres);
 252    sampler_view->base.reference.count = 1;
 253    sampler_view->base.context = pctx;
 254
 255    VkImageViewCreateInfo ivci = {};
 256    ivci.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
 257    ivci.image = res->image;
 258    ivci.viewType = image_view_type(state->target);
 259    ivci.format = zink_get_format(screen, state->format);
 260    ivci.components.r = component_mapping(state->swizzle_r);
 261    ivci.components.g = component_mapping(state->swizzle_g);
 262    ivci.components.b = component_mapping(state->swizzle_b);
 263    ivci.components.a = component_mapping(state->swizzle_a);
 264
 265    ivci.subresourceRange.aspectMask = sampler_aspect_from_format(state->format);
 266    ivci.subresourceRange.baseMipLevel = state->u.tex.first_level;
 267    ivci.subresourceRange.baseArrayLayer = state->u.tex.first_layer;
 268    ivci.subresourceRange.levelCount = state->u.tex.last_level - state->u.tex.first_level + 1;
 269    ivci.subresourceRange.layerCount = state->u.tex.last_layer - state->u.tex.first_layer + 1;
 270
 271    VkResult err = vkCreateImageView(screen->dev, &ivci, NULL, &sampler_view->image_view);
 272    if (err != VK_SUCCESS) {
 273       FREE(sampler_view);
 274       return NULL;
 275    }
 276
 277    return &sampler_view->base;
 278 }
 279
 280 static void
 281 zink_sampler_view_destroy(struct pipe_context *pctx,
 282                           struct pipe_sampler_view *pview)
 283 {
 284    struct zink_sampler_view *view = zink_sampler_view(pview);
 285    vkDestroyImageView(zink_screen(pctx->screen)->dev, view->image_view, NULL);
 286    FREE(view);
 287 }
 288
 289 static void *
 290 zink_create_vs_state(struct pipe_context *pctx,
 291                      const struct pipe_shader_state *shader)
 292 {
 293    struct nir_shader *nir;
 294    if (shader->type != PIPE_SHADER_IR_NIR)
 295       nir = zink_tgsi_to_nir(pctx->screen, shader->tokens);
 296    else
 297       nir = (struct nir_shader *)shader->ir.nir;
 298
 299    return zink_compile_nir(zink_screen(pctx->screen), nir, &shader->stream_output);
 300 }
 301
 302 static void
 303 bind_stage(struct zink_context *ctx, enum pipe_shader_type stage,
 304            struct zink_shader *shader)
 305 {
 306    assert(stage < PIPE_SHADER_COMPUTE);
 307    ctx->gfx_stages[stage] = shader;
 308    ctx->dirty_program = true;
 309 }
 310
 311 static void
 312 zink_bind_vs_state(struct pipe_context *pctx,
 313                    void *cso)
 314 {
 315    bind_stage(zink_context(pctx), PIPE_SHADER_VERTEX, cso);
 316 }
 317
 318 static void
 319 zink_delete_vs_state(struct pipe_context *pctx,
 320                      void *cso)
 321 {
 322    zink_shader_free(zink_screen(pctx->screen), cso);
 323 }
 324
 325 static void *
 326 zink_create_fs_state(struct pipe_context *pctx,
 327                      const struct pipe_shader_state *shader)
 328 {
 329    struct nir_shader *nir;
 330    if (shader->type != PIPE_SHADER_IR_NIR)
 331       nir = zink_tgsi_to_nir(pctx->screen, shader->tokens);
 332    else
 333       nir = (struct nir_shader *)shader->ir.nir;
 334
 335    return zink_compile_nir(zink_screen(pctx->screen), nir, NULL);
 336 }
 337
 338 static void
 339 zink_bind_fs_state(struct pipe_context *pctx,
 340                    void *cso)
 341 {
 342    bind_stage(zink_context(pctx), PIPE_SHADER_FRAGMENT, cso);
 343 }
 344
 345 static void
 346 zink_delete_fs_state(struct pipe_context *pctx,
 347                      void *cso)
 348 {
 349    zink_shader_free(zink_screen(pctx->screen), cso);
 350 }
 351
 352 static void
 353 zink_set_polygon_stipple(struct pipe_context *pctx,
 354                          const struct pipe_poly_stipple *ps)
 355 {
 356 }
 357
 358 static void
 359 zink_set_vertex_buffers(struct pipe_context *pctx,
 360                         unsigned start_slot,
 361                         unsigned num_buffers,
 362                         const struct pipe_vertex_buffer *buffers)
 363 {
 364    struct zink_context *ctx = zink_context(pctx);
 365
 366    if (buffers) {
 367       for (int i = 0; i < num_buffers; ++i) {
 368          const struct pipe_vertex_buffer *vb = buffers + i;
 369          struct zink_resource *res = zink_resource(vb->buffer.resource);
 370
 371          ctx->gfx_pipeline_state.bindings[start_slot + i].stride = vb->stride;
 372          if (res && res->needs_xfb_barrier) {
 373             /* if we're binding a previously-used xfb buffer, we need cmd buffer synchronization to ensure
 374              * that we use the right buffer data
 375              */
 376             pctx->flush(pctx, NULL, 0);
 377             res->needs_xfb_barrier = false;
 378          }
 379       }
 380    }
 381
 382    util_set_vertex_buffers_mask(ctx->buffers, &ctx->buffers_enabled_mask,
 383                                 buffers, start_slot, num_buffers);
 384 }
 385
 386 static void
 387 zink_set_viewport_states(struct pipe_context *pctx,
 388                          unsigned start_slot,
 389                          unsigned num_viewports,
 390                          const struct pipe_viewport_state *state)
 391 {
 392    struct zink_context *ctx = zink_context(pctx);
 393
 394    for (unsigned i = 0; i < num_viewports; ++i) {
 395       VkViewport viewport = {
 396          state[i].translate[0] - state[i].scale[0],
 397          state[i].translate[1] - state[i].scale[1],
 398          state[i].scale[0] * 2,
 399          state[i].scale[1] * 2,
 400          state[i].translate[2] - state[i].scale[2],
 401          state[i].translate[2] + state[i].scale[2]
 402       };
 403       ctx->viewport_states[start_slot + i] = state[i];
 404       ctx->viewports[start_slot + i] = viewport;
 405    }
 406    ctx->num_viewports = start_slot + num_viewports;
 407 }
 408
 409 static void
 410 zink_set_scissor_states(struct pipe_context *pctx,
 411                         unsigned start_slot, unsigned num_scissors,
 412                         const struct pipe_scissor_state *states)
 413 {
 414    struct zink_context *ctx = zink_context(pctx);
 415
 416    for (unsigned i = 0; i < num_scissors; i++) {
 417       VkRect2D scissor;
 418
 419       scissor.offset.x = states[i].minx;
 420       scissor.offset.y = states[i].miny;
 421       scissor.extent.width = states[i].maxx - states[i].minx;
 422       scissor.extent.height = states[i].maxy - states[i].miny;
 423       ctx->scissor_states[start_slot + i] = states[i];
 424       ctx->scissors[start_slot + i] = scissor;
 425    }
 426 }
 427
 428 static void
 429 zink_set_constant_buffer(struct pipe_context *pctx,
 430                          enum pipe_shader_type shader, uint index,
 431                          const struct pipe_constant_buffer *cb)
 432 {
 433    struct zink_context *ctx = zink_context(pctx);
 434
 435    if (cb) {
 436       struct pipe_resource *buffer = cb->buffer;
 437       unsigned offset = cb->buffer_offset;
 438       if (cb->user_buffer) {
 439          struct zink_screen *screen = zink_screen(pctx->screen);
 440          u_upload_data(ctx->base.const_uploader, 0, cb->buffer_size,
 441                        screen->props.limits.minUniformBufferOffsetAlignment,
 442                        cb->user_buffer, &offset, &buffer);
 443       }
 444
 445       pipe_resource_reference(&ctx->ubos[shader][index].buffer, buffer);
 446       ctx->ubos[shader][index].buffer_offset = offset;
 447       ctx->ubos[shader][index].buffer_size = cb->buffer_size;
 448       ctx->ubos[shader][index].user_buffer = NULL;
 449
 450       if (cb->user_buffer)
 451          pipe_resource_reference(&buffer, NULL);
 452    } else {
 453       pipe_resource_reference(&ctx->ubos[shader][index].buffer, NULL);
 454       ctx->ubos[shader][index].buffer_offset = 0;
 455       ctx->ubos[shader][index].buffer_size = 0;
 456       ctx->ubos[shader][index].user_buffer = NULL;
 457    }
 458 }
 459
 460 static void
 461 zink_set_sampler_views(struct pipe_context *pctx,
 462                        enum pipe_shader_type shader_type,
 463                        unsigned start_slot,
 464                        unsigned num_views,
 465                        struct pipe_sampler_view **views)
 466 {
 467    struct zink_context *ctx = zink_context(pctx);
 468    assert(views);
 469    for (unsigned i = 0; i < num_views; ++i) {
 470       pipe_sampler_view_reference(
 471          &ctx->image_views[shader_type][start_slot + i],
 472          views[i]);
 473    }
 474    ctx->num_image_views[shader_type] = start_slot + num_views;
 475 }
 476
 477 static void
 478 zink_set_stencil_ref(struct pipe_context *pctx,
 479                      const struct pipe_stencil_ref *ref)
 480 {
 481    struct zink_context *ctx = zink_context(pctx);
 482    ctx->stencil_ref = *ref;
 483 }
 484
 485 static void
 486 zink_set_clip_state(struct pipe_context *pctx,
 487                     const struct pipe_clip_state *pcs)
 488 {
 489 }
 490
 491 static struct zink_render_pass *
 492 get_render_pass(struct zink_context *ctx)
 493 {
 494    struct zink_screen *screen = zink_screen(ctx->base.screen);
 495    const struct pipe_framebuffer_state *fb = &ctx->fb_state;
 496    struct zink_render_pass_state state = { 0 };
 497
 498    for (int i = 0; i < fb->nr_cbufs; i++) {
 499       struct pipe_surface *surf = fb->cbufs[i];
 500       state.rts[i].format = zink_get_format(screen, surf->format);
 501       state.rts[i].samples = surf->nr_samples > 0 ? surf->nr_samples :
 502                                                     VK_SAMPLE_COUNT_1_BIT;
 503    }
 504    state.num_cbufs = fb->nr_cbufs;
 505
 506    if (fb->zsbuf) {
 507       struct zink_resource *zsbuf = zink_resource(fb->zsbuf->texture);
 508       state.rts[fb->nr_cbufs].format = zsbuf->format;
 509       state.rts[fb->nr_cbufs].samples = zsbuf->base.nr_samples > 0 ? zsbuf->base.nr_samples : VK_SAMPLE_COUNT_1_BIT;
 510    }
 511    state.have_zsbuf = fb->zsbuf != NULL;
 512
 513    struct hash_entry *entry = _mesa_hash_table_search(ctx->render_pass_cache,
 514                                                       &state);
 515    if (!entry) {
 516       struct zink_render_pass *rp;
 517       rp = zink_create_render_pass(screen, &state);
 518       entry = _mesa_hash_table_insert(ctx->render_pass_cache, &state, rp);
 519       if (!entry)
 520          return NULL;
 521    }
 522
 523    return entry->data;
 524 }
 525
 526 static struct zink_framebuffer *
 527 create_framebuffer(struct zink_context *ctx)
 528 {
 529    struct zink_screen *screen = zink_screen(ctx->base.screen);
 530
 531    struct zink_framebuffer_state state = {};
 532    state.rp = get_render_pass(ctx);
 533    for (int i = 0; i < ctx->fb_state.nr_cbufs; i++) {
 534       struct pipe_surface *psurf = ctx->fb_state.cbufs[i];
 535       state.attachments[i] = zink_surface(psurf);
 536    }
 537
 538    state.num_attachments = ctx->fb_state.nr_cbufs;
 539    if (ctx->fb_state.zsbuf) {
 540       struct pipe_surface *psurf = ctx->fb_state.zsbuf;
 541       state.attachments[state.num_attachments++] = zink_surface(psurf);
 542    }
 543
 544    state.width = ctx->fb_state.width;
 545    state.height = ctx->fb_state.height;
 546    state.layers = MAX2(ctx->fb_state.layers, 1);
 547
 548    return zink_create_framebuffer(screen, &state);
 549 }
 550
 551 void
 552 zink_begin_render_pass(struct zink_context *ctx, struct zink_batch *batch)
 553 {
 554    struct zink_screen *screen = zink_screen(ctx->base.screen);
 555    assert(batch == zink_curr_batch(ctx));
 556    assert(ctx->gfx_pipeline_state.render_pass);
 557
 558    struct pipe_framebuffer_state *fb_state = &ctx->fb_state;
 559
 560    VkRenderPassBeginInfo rpbi = {};
 561    rpbi.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
 562    rpbi.renderPass = ctx->gfx_pipeline_state.render_pass->render_pass;
 563    rpbi.renderArea.offset.x = 0;
 564    rpbi.renderArea.offset.y = 0;
 565    rpbi.renderArea.extent.width = fb_state->width;
 566    rpbi.renderArea.extent.height = fb_state->height;
 567    rpbi.clearValueCount = 0;
 568    rpbi.pClearValues = NULL;
 569    rpbi.framebuffer = ctx->framebuffer->fb;
 570
 571    assert(ctx->gfx_pipeline_state.render_pass && ctx->framebuffer);
 572    assert(!batch->rp || batch->rp == ctx->gfx_pipeline_state.render_pass);
 573    assert(!batch->fb || batch->fb == ctx->framebuffer);
 574
 575    for (int i = 0; i < fb_state->nr_cbufs; i++) {
 576       struct zink_resource *res = zink_resource(fb_state->cbufs[i]->texture);
 577       if (res->layout != VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL)
 578          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 579                                VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
 580    }
 581
 582    if (fb_state->zsbuf) {
 583       struct zink_resource *res = zink_resource(fb_state->zsbuf->texture);
 584       if (res->layout != VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL)
 585          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 586                                VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
 587    }
 588
 589    zink_render_pass_reference(screen, &batch->rp, ctx->gfx_pipeline_state.render_pass);
 590    zink_framebuffer_reference(screen, &batch->fb, ctx->framebuffer);
 591
 592    vkCmdBeginRenderPass(batch->cmdbuf, &rpbi, VK_SUBPASS_CONTENTS_INLINE);
 593 }
 594
 595 static void
 596 flush_batch(struct zink_context *ctx)
 597 {
 598    struct zink_batch *batch = zink_curr_batch(ctx);
 599    if (batch->rp)
 600       vkCmdEndRenderPass(batch->cmdbuf);
 601
 602    zink_end_batch(ctx, batch);
 603
 604    ctx->curr_batch++;
 605    if (ctx->curr_batch == ARRAY_SIZE(ctx->batches))
 606       ctx->curr_batch = 0;
 607
 608    zink_start_batch(ctx, zink_curr_batch(ctx));
 609 }
 610
 611 struct zink_batch *
 612 zink_batch_rp(struct zink_context *ctx)
 613 {
 614    struct zink_batch *batch = zink_curr_batch(ctx);
 615    if (!batch->rp) {
 616       zink_begin_render_pass(ctx, batch);
 617       assert(batch->rp);
 618    }
 619    return batch;
 620 }
 621
 622 struct zink_batch *
 623 zink_batch_no_rp(struct zink_context *ctx)
 624 {
 625    struct zink_batch *batch = zink_curr_batch(ctx);
 626    if (batch->rp) {
 627       /* flush batch and get a new one */
 628       flush_batch(ctx);
 629       batch = zink_curr_batch(ctx);
 630       assert(!batch->rp);
 631    }
 632    return batch;
 633 }
 634
 635 static void
 636 zink_set_framebuffer_state(struct pipe_context *pctx,
 637                            const struct pipe_framebuffer_state *state)
 638 {
 639    struct zink_context *ctx = zink_context(pctx);
 640    struct zink_screen *screen = zink_screen(pctx->screen);
 641
 642    util_copy_framebuffer_state(&ctx->fb_state, state);
 643
 644    struct zink_framebuffer *fb = ctx->framebuffer;
 645    /* explicitly unref previous fb to ensure it gets destroyed */
 646    if (fb)
 647       zink_framebuffer_reference(screen, &fb, NULL);
 648    fb = create_framebuffer(ctx);
 649    zink_framebuffer_reference(screen, &ctx->framebuffer, fb);
 650    zink_render_pass_reference(screen, &ctx->gfx_pipeline_state.render_pass, fb->rp);
 651
 652    ctx->gfx_pipeline_state.rast_samples = MAX2(state->samples, 1);
 653    ctx->gfx_pipeline_state.num_attachments = state->nr_cbufs;
 654
 655    struct zink_batch *batch = zink_batch_no_rp(ctx);
 656
 657    for (int i = 0; i < state->nr_cbufs; i++) {
 658       struct zink_resource *res = zink_resource(state->cbufs[i]->texture);
 659       if (res->layout != VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL)
 660          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 661                                VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
 662    }
 663
 664    if (state->zsbuf) {
 665       struct zink_resource *res = zink_resource(state->zsbuf->texture);
 666       if (res->layout != VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL)
 667          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 668                                VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
 669    }
 670 }
 671
 672 static void
 673 zink_set_blend_color(struct pipe_context *pctx,
 674                      const struct pipe_blend_color *color)
 675 {
 676    struct zink_context *ctx = zink_context(pctx);
 677    memcpy(ctx->blend_constants, color->color, sizeof(float) * 4);
 678 }
 679
 680 static void
 681 zink_set_sample_mask(struct pipe_context *pctx, unsigned sample_mask)
 682 {
 683    struct zink_context *ctx = zink_context(pctx);
 684    ctx->gfx_pipeline_state.sample_mask = sample_mask;
 685 }
 686
 687 static VkAccessFlags
 688 access_src_flags(VkImageLayout layout)
 689 {
 690    switch (layout) {
 691    case VK_IMAGE_LAYOUT_UNDEFINED:
 692    case VK_IMAGE_LAYOUT_GENERAL:
 693       return 0;
 694
 695    case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
 696       return VK_ACCESS_COLOR_ATTACHMENT_READ_BIT;
 697    case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
 698       return VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT;
 699
 700    case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
 701       return VK_ACCESS_SHADER_READ_BIT;
 702
 703    case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
 704       return VK_ACCESS_TRANSFER_READ_BIT;
 705
 706    case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
 707       return VK_ACCESS_TRANSFER_WRITE_BIT;
 708
 709    case VK_IMAGE_LAYOUT_PREINITIALIZED:
 710       return VK_ACCESS_HOST_WRITE_BIT;
 711
 712    default:
 713       unreachable("unexpected layout");
 714    }
 715 }
 716
 717 static VkAccessFlags
 718 access_dst_flags(VkImageLayout layout)
 719 {
 720    switch (layout) {
 721    case VK_IMAGE_LAYOUT_UNDEFINED:
 722    case VK_IMAGE_LAYOUT_GENERAL:
 723       return 0;
 724
 725    case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
 726       return VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
 727    case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
 728       return VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
 729
 730    case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
 731       return VK_ACCESS_TRANSFER_READ_BIT;
 732
 733    case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
 734       return VK_ACCESS_TRANSFER_WRITE_BIT;
 735
 736    default:
 737       unreachable("unexpected layout");
 738    }
 739 }
 740
 741 static VkPipelineStageFlags
 742 pipeline_dst_stage(VkImageLayout layout)
 743 {
 744    switch (layout) {
 745    case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
 746       return VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
 747    case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
 748       return VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
 749
 750    case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
 751       return VK_PIPELINE_STAGE_TRANSFER_BIT;
 752    case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
 753       return VK_PIPELINE_STAGE_TRANSFER_BIT;
 754
 755    default:
 756       return VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
 757    }
 758 }
 759
 760 static VkPipelineStageFlags
 761 pipeline_src_stage(VkImageLayout layout)
 762 {
 763    switch (layout) {
 764    case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
 765       return VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
 766    case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
 767       return VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
 768
 769    case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
 770       return VK_PIPELINE_STAGE_TRANSFER_BIT;
 771    case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
 772       return VK_PIPELINE_STAGE_TRANSFER_BIT;
 773
 774    default:
 775       return VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
 776    }
 777 }
 778
 779
 780 void
 781 zink_resource_barrier(VkCommandBuffer cmdbuf, struct zink_resource *res,
 782                       VkImageAspectFlags aspect, VkImageLayout new_layout)
 783 {
 784    VkImageSubresourceRange isr = {
 785       aspect,
 786       0, VK_REMAINING_MIP_LEVELS,
 787       0, VK_REMAINING_ARRAY_LAYERS
 788    };
 789
 790    VkImageMemoryBarrier imb = {
 791       VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
 792       NULL,
 793       access_src_flags(res->layout),
 794       access_dst_flags(new_layout),
 795       res->layout,
 796       new_layout,
 797       VK_QUEUE_FAMILY_IGNORED,
 798       VK_QUEUE_FAMILY_IGNORED,
 799       res->image,
 800       isr
 801    };
 802    vkCmdPipelineBarrier(
 803       cmdbuf,
 804       pipeline_src_stage(res->layout),
 805       pipeline_dst_stage(new_layout),
 806       0,
 807       0, NULL,
 808       0, NULL,
 809       1, &imb
 810    );
 811
 812    res->layout = new_layout;
 813 }
 814
 815 static void
 816 zink_clear(struct pipe_context *pctx,
 817            unsigned buffers,
 818            const struct pipe_scissor_state *scissor_state,
 819            const union pipe_color_union *pcolor,
 820            double depth, unsigned stencil)
 821 {
 822    struct zink_context *ctx = zink_context(pctx);
 823    struct pipe_framebuffer_state *fb = &ctx->fb_state;
 824
 825    /* FIXME: this is very inefficient; if no renderpass has been started yet,
 826     * we should record the clear if it's full-screen, and apply it as we
 827     * start the render-pass. Otherwise we can do a partial out-of-renderpass
 828     * clear.
 829     */
 830    struct zink_batch *batch = zink_batch_rp(ctx);
 831
 832    VkClearAttachment attachments[1 + PIPE_MAX_COLOR_BUFS];
 833    int num_attachments = 0;
 834
 835    if (buffers & PIPE_CLEAR_COLOR) {
 836       VkClearColorValue color;
 837       color.float32[0] = pcolor->f[0];
 838       color.float32[1] = pcolor->f[1];
 839       color.float32[2] = pcolor->f[2];
 840       color.float32[3] = pcolor->f[3];
 841
 842       for (unsigned i = 0; i < fb->nr_cbufs; i++) {
 843          if (!(buffers & (PIPE_CLEAR_COLOR0 << i)) || !fb->cbufs[i])
 844             continue;
 845
 846          attachments[num_attachments].aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
 847          attachments[num_attachments].colorAttachment = i;
 848          attachments[num_attachments].clearValue.color = color;
 849          ++num_attachments;
 850       }
 851    }
 852
 853    if (buffers & PIPE_CLEAR_DEPTHSTENCIL && fb->zsbuf) {
 854       VkImageAspectFlags aspect = 0;
 855       if (buffers & PIPE_CLEAR_DEPTH)
 856          aspect |= VK_IMAGE_ASPECT_DEPTH_BIT;
 857       if (buffers & PIPE_CLEAR_STENCIL)
 858          aspect |= VK_IMAGE_ASPECT_STENCIL_BIT;
 859
 860       attachments[num_attachments].aspectMask = aspect;
 861       attachments[num_attachments].clearValue.depthStencil.depth = depth;
 862       attachments[num_attachments].clearValue.depthStencil.stencil = stencil;
 863       ++num_attachments;
 864    }
 865
 866    VkClearRect cr;
 867    cr.rect.offset.x = 0;
 868    cr.rect.offset.y = 0;
 869    cr.rect.extent.width = fb->width;
 870    cr.rect.extent.height = fb->height;
 871    cr.baseArrayLayer = 0;
 872    cr.layerCount = util_framebuffer_get_num_layers(fb);
 873    vkCmdClearAttachments(batch->cmdbuf, num_attachments, attachments, 1, &cr);
 874 }
 875
 876 VkShaderStageFlagBits
 877 zink_shader_stage(enum pipe_shader_type type)
 878 {
 879    VkShaderStageFlagBits stages[] = {
 880       [PIPE_SHADER_VERTEX] = VK_SHADER_STAGE_VERTEX_BIT,
 881       [PIPE_SHADER_FRAGMENT] = VK_SHADER_STAGE_FRAGMENT_BIT,
 882       [PIPE_SHADER_GEOMETRY] = VK_SHADER_STAGE_GEOMETRY_BIT,
 883       [PIPE_SHADER_TESS_CTRL] = VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT,
 884       [PIPE_SHADER_TESS_EVAL] = VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT,
 885       [PIPE_SHADER_COMPUTE] = VK_SHADER_STAGE_COMPUTE_BIT,
 886    };
 887    return stages[type];
 888 }
 889
 890 static uint32_t
 891 hash_gfx_program(const void *key)
 892 {
 893    return _mesa_hash_data(key, sizeof(struct zink_shader *) * (PIPE_SHADER_TYPES - 1));
 894 }
 895
 896 static bool
 897 equals_gfx_program(const void *a, const void *b)
 898 {
 899    return memcmp(a, b, sizeof(struct zink_shader *) * (PIPE_SHADER_TYPES - 1)) == 0;
 900 }
 901
 902 static uint32_t
 903 hash_render_pass_state(const void *key)
 904 {
 905    return _mesa_hash_data(key, sizeof(struct zink_render_pass_state));
 906 }
 907
 908 static bool
 909 equals_render_pass_state(const void *a, const void *b)
 910 {
 911    return memcmp(a, b, sizeof(struct zink_render_pass_state)) == 0;
 912 }
 913
 914 static void
 915 zink_flush(struct pipe_context *pctx,
 916            struct pipe_fence_handle **pfence,
 917            enum pipe_flush_flags flags)
 918 {
 919    struct zink_context *ctx = zink_context(pctx);
 920
 921    struct zink_batch *batch = zink_curr_batch(ctx);
 922    flush_batch(ctx);
 923
 924    if (zink_screen(pctx->screen)->have_EXT_transform_feedback && ctx->num_so_targets)
 925       ctx->dirty_so_targets = true;
 926
 927    if (pfence)
 928       zink_fence_reference(zink_screen(pctx->screen),
 929                            (struct zink_fence **)pfence,
 930                            batch->fence);
 931
 932    /* HACK:
 933     * For some strange reason, we need to finish before presenting, or else
 934     * we start rendering on top of the back-buffer for the next frame. This
 935     * seems like a bug in the DRI-driver to me, because we really should
 936     * be properly protected by fences here, and the back-buffer should
 937     * either be swapped with the front-buffer, or blitted from. But for
 938     * some strange reason, neither of these things happen.
 939     */
 940    if (flags & PIPE_FLUSH_END_OF_FRAME)
 941       pctx->screen->fence_finish(pctx->screen, pctx,
 942                                  (struct pipe_fence_handle *)batch->fence,
 943                                  PIPE_TIMEOUT_INFINITE);
 944 }
 945
 946 static void
 947 zink_flush_resource(struct pipe_context *pipe,
 948                     struct pipe_resource *resource)
 949 {
 950 }
 951
 952 static void
 953 zink_resource_copy_region(struct pipe_context *pctx,
 954                           struct pipe_resource *pdst,
 955                           unsigned dst_level, unsigned dstx, unsigned dsty, unsigned dstz,
 956                           struct pipe_resource *psrc,
 957                           unsigned src_level, const struct pipe_box *src_box)
 958 {
 959    struct zink_resource *dst = zink_resource(pdst);
 960    struct zink_resource *src = zink_resource(psrc);
 961    struct zink_context *ctx = zink_context(pctx);
 962    if (dst->base.target != PIPE_BUFFER && src->base.target != PIPE_BUFFER) {
 963       VkImageCopy region = {};
 964
 965       region.srcSubresource.aspectMask = src->aspect;
 966       region.srcSubresource.mipLevel = src_level;
 967       region.srcSubresource.layerCount = 1;
 968       if (src->base.array_size > 1) {
 969          region.srcSubresource.baseArrayLayer = src_box->z;
 970          region.srcSubresource.layerCount = src_box->depth;
 971          region.extent.depth = 1;
 972       } else {
 973          region.srcOffset.z = src_box->z;
 974          region.srcSubresource.layerCount = 1;
 975          region.extent.depth = src_box->depth;
 976       }
 977
 978       region.srcOffset.x = src_box->x;
 979       region.srcOffset.y = src_box->y;
 980
 981       region.dstSubresource.aspectMask = dst->aspect;
 982       region.dstSubresource.mipLevel = dst_level;
 983       if (dst->base.array_size > 1) {
 984          region.dstSubresource.baseArrayLayer = dstz;
 985          region.dstSubresource.layerCount = src_box->depth;
 986       } else {
 987          region.dstOffset.z = dstz;
 988          region.dstSubresource.layerCount = 1;
 989       }
 990
 991       region.dstOffset.x = dstx;
 992       region.dstOffset.y = dsty;
 993       region.extent.width = src_box->width;
 994       region.extent.height = src_box->height;
 995
 996       struct zink_batch *batch = zink_batch_no_rp(ctx);
 997       zink_batch_reference_resoure(batch, src);
 998       zink_batch_reference_resoure(batch, dst);
 999
1000       if (src->layout != VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL) {
1001          zink_resource_barrier(batch->cmdbuf, src, src->aspect,
1002                                VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL);
1003       }
1004
1005       if (dst->layout != VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
1006          zink_resource_barrier(batch->cmdbuf, dst, dst->aspect,
1007                                VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
1008       }
1009
1010       vkCmdCopyImage(batch->cmdbuf, src->image, src->layout,
1011                      dst->image, dst->layout,
1012                      1, &region);
1013    } else if (dst->base.target == PIPE_BUFFER &&
1014               src->base.target == PIPE_BUFFER) {
1015       VkBufferCopy region;
1016       region.srcOffset = src_box->x;
1017       region.dstOffset = dstx;
1018       region.size = src_box->width;
1019
1020       struct zink_batch *batch = zink_batch_no_rp(ctx);
1021       zink_batch_reference_resoure(batch, src);
1022       zink_batch_reference_resoure(batch, dst);
1023
1024       vkCmdCopyBuffer(batch->cmdbuf, src->buffer, dst->buffer, 1, &region);
1025    } else
1026       debug_printf("zink: TODO resource copy\n");
1027 }
1028
1029 static struct pipe_stream_output_target *
1030 zink_create_stream_output_target(struct pipe_context *pctx,
1031                                  struct pipe_resource *pres,
1032                                  unsigned buffer_offset,
1033                                  unsigned buffer_size)
1034 {
1035    struct zink_so_target *t;
1036    t = CALLOC_STRUCT(zink_so_target);
1037    if (!t)
1038       return NULL;
1039
1040    t->base.reference.count = 1;
1041    t->base.context = pctx;
1042    pipe_resource_reference(&t->base.buffer, pres);
1043    t->base.buffer_offset = buffer_offset;
1044    t->base.buffer_size = buffer_size;
1045
1046    /* using PIPE_BIND_CUSTOM here lets us create a custom pipe buffer resource,
1047     * which allows us to differentiate and use VK_BUFFER_USAGE_TRANSFORM_FEEDBACK_COUNTER_BUFFER_BIT_EXT
1048     * as we must for this case
1049     */
1050    t->counter_buffer = pipe_buffer_create(pctx->screen, PIPE_BIND_STREAM_OUTPUT | PIPE_BIND_CUSTOM, PIPE_USAGE_DEFAULT, 4);
1051    if (!t->counter_buffer) {
1052       FREE(t);
1053       return NULL;
1054    }
1055
1056    return &t->base;
1057 }
1058
1059 static void
1060 zink_stream_output_target_destroy(struct pipe_context *pctx,
1061                                   struct pipe_stream_output_target *psot)
1062 {
1063    struct zink_so_target *t = (struct zink_so_target *)psot;
1064    pipe_resource_reference(&t->counter_buffer, NULL);
1065    pipe_resource_reference(&t->base.buffer, NULL);
1066    FREE(t);
1067 }
1068
1069 static void
1070 zink_set_stream_output_targets(struct pipe_context *pctx,
1071                                unsigned num_targets,
1072                                struct pipe_stream_output_target **targets,
1073                                const unsigned *offsets)
1074 {
1075    struct zink_context *ctx = zink_context(pctx);
1076
1077    if (num_targets == 0) {
1078       for (unsigned i = 0; i < ctx->num_so_targets; i++)
1079          pipe_so_target_reference(&ctx->so_targets[i], NULL);
1080       ctx->num_so_targets = 0;
1081    } else {
1082       for (unsigned i = 0; i < num_targets; i++)
1083          pipe_so_target_reference(&ctx->so_targets[i], targets[i]);
1084       for (unsigned i = num_targets; i < ctx->num_so_targets; i++)
1085          pipe_so_target_reference(&ctx->so_targets[i], NULL);
1086       ctx->num_so_targets = num_targets;
1087
1088       /* emit memory barrier on next draw for synchronization */
1089       if (offsets[0] == (unsigned)-1)
1090          ctx->xfb_barrier = true;
1091       /* TODO: possibly avoid rebinding on resume if resuming from same buffers? */
1092       ctx->dirty_so_targets = true;
1093    }
1094 }
1095
1096 struct pipe_context *
1097 zink_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
1098 {
1099    struct zink_screen *screen = zink_screen(pscreen);
1100    struct zink_context *ctx = CALLOC_STRUCT(zink_context);
1101    if (!ctx)
1102       goto fail;
1103
1104    ctx->base.screen = pscreen;
1105    ctx->base.priv = priv;
1106
1107    ctx->base.destroy = zink_context_destroy;
1108
1109    zink_context_state_init(&ctx->base);
1110
1111    ctx->base.create_sampler_state = zink_create_sampler_state;
1112    ctx->base.bind_sampler_states = zink_bind_sampler_states;
1113    ctx->base.delete_sampler_state = zink_delete_sampler_state;
1114
1115    ctx->base.create_sampler_view = zink_create_sampler_view;
1116    ctx->base.set_sampler_views = zink_set_sampler_views;
1117    ctx->base.sampler_view_destroy = zink_sampler_view_destroy;
1118
1119    ctx->base.create_vs_state = zink_create_vs_state;
1120    ctx->base.bind_vs_state = zink_bind_vs_state;
1121    ctx->base.delete_vs_state = zink_delete_vs_state;
1122
1123    ctx->base.create_fs_state = zink_create_fs_state;
1124    ctx->base.bind_fs_state = zink_bind_fs_state;
1125    ctx->base.delete_fs_state = zink_delete_fs_state;
1126
1127    ctx->base.set_polygon_stipple = zink_set_polygon_stipple;
1128    ctx->base.set_vertex_buffers = zink_set_vertex_buffers;
1129    ctx->base.set_viewport_states = zink_set_viewport_states;
1130    ctx->base.set_scissor_states = zink_set_scissor_states;
1131    ctx->base.set_constant_buffer = zink_set_constant_buffer;
1132    ctx->base.set_framebuffer_state = zink_set_framebuffer_state;
1133    ctx->base.set_stencil_ref = zink_set_stencil_ref;
1134    ctx->base.set_clip_state = zink_set_clip_state;
1135    ctx->base.set_blend_color = zink_set_blend_color;
1136
1137    ctx->base.set_sample_mask = zink_set_sample_mask;
1138
1139    ctx->base.clear = zink_clear;
1140    ctx->base.draw_vbo = zink_draw_vbo;
1141    ctx->base.flush = zink_flush;
1142
1143    ctx->base.resource_copy_region = zink_resource_copy_region;
1144    ctx->base.blit = zink_blit;
1145    ctx->base.create_stream_output_target = zink_create_stream_output_target;
1146    ctx->base.stream_output_target_destroy = zink_stream_output_target_destroy;
1147
1148    ctx->base.set_stream_output_targets = zink_set_stream_output_targets;
1149    ctx->base.flush_resource = zink_flush_resource;
1150    zink_context_surface_init(&ctx->base);
1151    zink_context_resource_init(&ctx->base);
1152    zink_context_query_init(&ctx->base);
1153
1154    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
1155
1156    ctx->base.stream_uploader = u_upload_create_default(&ctx->base);
1157    ctx->base.const_uploader = ctx->base.stream_uploader;
1158
1159    int prim_hwsupport = 1 << PIPE_PRIM_POINTS |
1160                         1 << PIPE_PRIM_LINES |
1161                         1 << PIPE_PRIM_LINE_STRIP |
1162                         1 << PIPE_PRIM_TRIANGLES |
1163                         1 << PIPE_PRIM_TRIANGLE_STRIP |
1164                         1 << PIPE_PRIM_TRIANGLE_FAN;
1165
1166    ctx->primconvert = util_primconvert_create(&ctx->base, prim_hwsupport);
1167    if (!ctx->primconvert)
1168       goto fail;
1169
1170    ctx->blitter = util_blitter_create(&ctx->base);
1171    if (!ctx->blitter)
1172       goto fail;
1173
1174    VkCommandPoolCreateInfo cpci = {};
1175    cpci.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
1176    cpci.queueFamilyIndex = screen->gfx_queue;
1177    cpci.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
1178    if (vkCreateCommandPool(screen->dev, &cpci, NULL, &ctx->cmdpool) != VK_SUCCESS)
1179       goto fail;
1180
1181    VkCommandBufferAllocateInfo cbai = {};
1182    cbai.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
1183    cbai.commandPool = ctx->cmdpool;
1184    cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
1185    cbai.commandBufferCount = 1;
1186
1187    VkDescriptorPoolSize sizes[] = {
1188       {VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,         ZINK_BATCH_DESC_SIZE},
1189       {VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, ZINK_BATCH_DESC_SIZE}
1190    };
1191    VkDescriptorPoolCreateInfo dpci = {};
1192    dpci.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
1193    dpci.pPoolSizes = sizes;
1194    dpci.poolSizeCount = ARRAY_SIZE(sizes);
1195    dpci.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
1196    dpci.maxSets = ZINK_BATCH_DESC_SIZE;
1197
1198    for (int i = 0; i < ARRAY_SIZE(ctx->batches); ++i) {
1199       if (vkAllocateCommandBuffers(screen->dev, &cbai, &ctx->batches[i].cmdbuf) != VK_SUCCESS)
1200          goto fail;
1201
1202       ctx->batches[i].resources = _mesa_set_create(NULL, _mesa_hash_pointer,
1203                                                    _mesa_key_pointer_equal);
1204       ctx->batches[i].sampler_views = _mesa_set_create(NULL,
1205                                                        _mesa_hash_pointer,
1206                                                        _mesa_key_pointer_equal);
1207
1208       if (!ctx->batches[i].resources || !ctx->batches[i].sampler_views)
1209          goto fail;
1210
1211       util_dynarray_init(&ctx->batches[i].zombie_samplers, NULL);
1212
1213       if (vkCreateDescriptorPool(screen->dev, &dpci, 0,
1214                                  &ctx->batches[i].descpool) != VK_SUCCESS)
1215          goto fail;
1216    }
1217
1218    vkGetDeviceQueue(screen->dev, screen->gfx_queue, 0, &ctx->queue);
1219
1220    ctx->program_cache = _mesa_hash_table_create(NULL,
1221                                                 hash_gfx_program,
1222                                                 equals_gfx_program);
1223    ctx->render_pass_cache = _mesa_hash_table_create(NULL,
1224                                                     hash_render_pass_state,
1225                                                     equals_render_pass_state);
1226    if (!ctx->program_cache || !ctx->render_pass_cache)
1227       goto fail;
1228
1229    const uint8_t data[] = { 0 };
1230    ctx->dummy_buffer = pipe_buffer_create_with_data(&ctx->base,
1231       PIPE_BIND_VERTEX_BUFFER, PIPE_USAGE_IMMUTABLE, sizeof(data), data);
1232    if (!ctx->dummy_buffer)
1233       goto fail;
1234
1235    ctx->dirty_program = true;
1236
1237    /* start the first batch */
1238    zink_start_batch(ctx, zink_curr_batch(ctx));
1239
1240    return &ctx->base;
1241
1242 fail:
1243    if (ctx) {
1244       vkDestroyCommandPool(screen->dev, ctx->cmdpool, NULL);
1245       FREE(ctx);
1246    }
1247    return NULL;
1248 }