src/gallium/drivers/virgl/virgl_resource.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 #include "util/u_format.h"
  24 #include "util/u_inlines.h"
  25 #include "util/u_memory.h"
  26 #include "virgl_context.h"
  27 #include "virgl_resource.h"
  28 #include "virgl_screen.h"
  29
  30 bool virgl_res_needs_flush_wait(struct virgl_context *vctx,
  31                                 struct virgl_transfer *trans)
  32 {
  33    struct virgl_screen *vs = virgl_screen(vctx->base.screen);
  34    struct virgl_resource *res = virgl_resource(trans->base.resource);
  35
  36    if (trans->base.usage & PIPE_TRANSFER_UNSYNCHRONIZED)
  37       return false;
  38    if (!vs->vws->res_is_referenced(vs->vws, vctx->cbuf, res->hw_res))
  39       return false;
  40    if (res->clean[trans->base.level]) {
  41       if (vctx->num_draws == 0 && vctx->num_compute == 0)
  42          return false;
  43       if (!virgl_transfer_queue_is_queued(&vctx->queue, trans))
  44          return false;
  45    }
  46
  47    return true;
  48 }
  49
  50 bool virgl_res_needs_readback(struct virgl_context *vctx,
  51                               struct virgl_resource *res,
  52                               unsigned usage, unsigned level)
  53 {
  54    bool readback = true;
  55    if (res->clean[level])
  56       readback = false;
  57    else if (usage & PIPE_TRANSFER_DISCARD_RANGE)
  58       readback = false;
  59    else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) ==
  60             (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT))
  61       readback = false;
  62    return readback;
  63 }
  64
  65 static struct pipe_resource *virgl_resource_create(struct pipe_screen *screen,
  66                                                    const struct pipe_resource *templ)
  67 {
  68    unsigned vbind;
  69    struct virgl_screen *vs = virgl_screen(screen);
  70    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
  71
  72    res->u.b = *templ;
  73    res->u.b.screen = &vs->base;
  74    pipe_reference_init(&res->u.b.reference, 1);
  75    vbind = pipe_to_virgl_bind(templ->bind);
  76    virgl_resource_layout(&res->u.b, &res->metadata);
  77    res->hw_res = vs->vws->resource_create(vs->vws, templ->target,
  78                                           templ->format, vbind,
  79                                           templ->width0,
  80                                           templ->height0,
  81                                           templ->depth0,
  82                                           templ->array_size,
  83                                           templ->last_level,
  84                                           templ->nr_samples,
  85                                           res->metadata.total_size);
  86    if (!res->hw_res) {
  87       FREE(res);
  88       return NULL;
  89    }
  90
  91    for (uint32_t i = 0; i < VR_MAX_TEXTURE_2D_LEVELS; i++)
  92       res->clean[i] = TRUE;
  93
  94    if (templ->target == PIPE_BUFFER)
  95       virgl_buffer_init(res);
  96    else
  97       virgl_texture_init(res);
  98
  99    return &res->u.b;
 100
 101 }
 102
 103 static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen,
 104                                                         const struct pipe_resource *templ,
 105                                                         struct winsys_handle *whandle,
 106                                                         unsigned usage)
 107 {
 108    struct virgl_screen *vs = virgl_screen(screen);
 109    if (templ->target == PIPE_BUFFER)
 110       return NULL;
 111
 112    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
 113    res->u.b = *templ;
 114    res->u.b.screen = &vs->base;
 115    pipe_reference_init(&res->u.b.reference, 1);
 116
 117    res->hw_res = vs->vws->resource_create_from_handle(vs->vws, whandle);
 118    if (!res->hw_res) {
 119       FREE(res);
 120       return NULL;
 121    }
 122
 123    virgl_texture_init(res);
 124
 125    return &res->u.b;
 126 }
 127
 128 void virgl_init_screen_resource_functions(struct pipe_screen *screen)
 129 {
 130     screen->resource_create = virgl_resource_create;
 131     screen->resource_from_handle = virgl_resource_from_handle;
 132     screen->resource_get_handle = u_resource_get_handle_vtbl;
 133     screen->resource_destroy = u_resource_destroy_vtbl;
 134 }
 135
 136 static void virgl_buffer_subdata(struct pipe_context *pipe,
 137                                  struct pipe_resource *resource,
 138                                  unsigned usage, unsigned offset,
 139                                  unsigned size, const void *data)
 140 {
 141    struct pipe_box box;
 142
 143    if (offset == 0 && size == resource->width0)
 144       usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
 145    else
 146       usage |= PIPE_TRANSFER_DISCARD_RANGE;
 147
 148    u_box_1d(offset, size, &box);
 149
 150    if (resource->width0 >= getpagesize())
 151       u_default_buffer_subdata(pipe, resource, usage, offset, size, data);
 152    else
 153       virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0);
 154 }
 155
 156 void virgl_init_context_resource_functions(struct pipe_context *ctx)
 157 {
 158     ctx->transfer_map = u_transfer_map_vtbl;
 159     ctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 160     ctx->transfer_unmap = u_transfer_unmap_vtbl;
 161     ctx->buffer_subdata = virgl_buffer_subdata;
 162     ctx->texture_subdata = u_default_texture_subdata;
 163 }
 164
 165 void virgl_resource_layout(struct pipe_resource *pt,
 166                            struct virgl_resource_metadata *metadata)
 167 {
 168    unsigned level, nblocksy;
 169    unsigned width = pt->width0;
 170    unsigned height = pt->height0;
 171    unsigned depth = pt->depth0;
 172    unsigned buffer_size = 0;
 173
 174    for (level = 0; level <= pt->last_level; level++) {
 175       unsigned slices;
 176
 177       if (pt->target == PIPE_TEXTURE_CUBE)
 178          slices = 6;
 179       else if (pt->target == PIPE_TEXTURE_3D)
 180          slices = depth;
 181       else
 182          slices = pt->array_size;
 183
 184       nblocksy = util_format_get_nblocksy(pt->format, height);
 185       metadata->stride[level] = util_format_get_stride(pt->format, width);
 186       metadata->layer_stride[level] = nblocksy * metadata->stride[level];
 187       metadata->level_offset[level] = buffer_size;
 188
 189       buffer_size += slices * metadata->layer_stride[level];
 190
 191       width = u_minify(width, 1);
 192       height = u_minify(height, 1);
 193       depth = u_minify(depth, 1);
 194    }
 195
 196    if (pt->nr_samples <= 1)
 197       metadata->total_size = buffer_size;
 198    else /* don't create guest backing store for MSAA */
 199       metadata->total_size = 0;
 200 }
 201
 202 struct virgl_transfer *
 203 virgl_resource_create_transfer(struct slab_child_pool *pool,
 204                                struct pipe_resource *pres,
 205                                const struct virgl_resource_metadata *metadata,
 206                                unsigned level, unsigned usage,
 207                                const struct pipe_box *box)
 208 {
 209    struct virgl_transfer *trans;
 210    enum pipe_format format = pres->format;
 211    const unsigned blocksy = box->y / util_format_get_blockheight(format);
 212    const unsigned blocksx = box->x / util_format_get_blockwidth(format);
 213
 214    unsigned offset = metadata->level_offset[level];
 215    if (pres->target == PIPE_TEXTURE_CUBE ||
 216        pres->target == PIPE_TEXTURE_CUBE_ARRAY ||
 217        pres->target == PIPE_TEXTURE_3D ||
 218        pres->target == PIPE_TEXTURE_2D_ARRAY) {
 219       offset += box->z * metadata->layer_stride[level];
 220    }
 221    else if (pres->target == PIPE_TEXTURE_1D_ARRAY) {
 222       offset += box->z * metadata->stride[level];
 223       assert(box->y == 0);
 224    } else if (pres->target == PIPE_BUFFER) {
 225       assert(box->y == 0 && box->z == 0);
 226    } else {
 227       assert(box->z == 0);
 228    }
 229
 230    offset += blocksy * metadata->stride[level];
 231    offset += blocksx * util_format_get_blocksize(format);
 232
 233    trans = slab_alloc(pool);
 234    if (!trans)
 235       return NULL;
 236
 237    trans->base.resource = pres;
 238    trans->base.level = level;
 239    trans->base.usage = usage;
 240    trans->base.box = *box;
 241    trans->base.stride = metadata->stride[level];
 242    trans->base.layer_stride = metadata->layer_stride[level];
 243    trans->offset = offset;
 244    util_range_init(&trans->range);
 245
 246    if (trans->base.resource->target != PIPE_TEXTURE_3D &&
 247        trans->base.resource->target != PIPE_TEXTURE_CUBE &&
 248        trans->base.resource->target != PIPE_TEXTURE_1D_ARRAY &&
 249        trans->base.resource->target != PIPE_TEXTURE_2D_ARRAY &&
 250        trans->base.resource->target != PIPE_TEXTURE_CUBE_ARRAY)
 251       trans->l_stride = 0;
 252    else
 253       trans->l_stride = trans->base.layer_stride;
 254
 255    return trans;
 256 }
 257
 258 void virgl_resource_destroy_transfer(struct slab_child_pool *pool,
 259                                      struct virgl_transfer *trans)
 260 {
 261    util_range_destroy(&trans->range);
 262    slab_free(pool, trans);
 263 }
 264
 265 void virgl_resource_destroy(struct pipe_screen *screen,
 266                             struct pipe_resource *resource)
 267 {
 268    struct virgl_screen *vs = virgl_screen(screen);
 269    struct virgl_resource *res = virgl_resource(resource);
 270    vs->vws->resource_unref(vs->vws, res->hw_res);
 271    FREE(res);
 272 }
 273
 274 boolean virgl_resource_get_handle(struct pipe_screen *screen,
 275                                   struct pipe_resource *resource,
 276                                   struct winsys_handle *whandle)
 277 {
 278    struct virgl_screen *vs = virgl_screen(screen);
 279    struct virgl_resource *res = virgl_resource(resource);
 280
 281    if (res->u.b.target == PIPE_BUFFER)
 282       return FALSE;
 283
 284    return vs->vws->resource_get_handle(vs->vws, res->hw_res,
 285                                        res->metadata.stride[0],
 286                                        whandle);
 287 }
 288
 289 void virgl_resource_dirty(struct virgl_resource *res, uint32_t level)
 290 {
 291    if (res) {
 292       if (res->u.b.target == PIPE_BUFFER)
 293          res->clean[0] = FALSE;
 294       else
 295          res->clean[level] = FALSE;
 296    }
 297 }