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    }
  44
  45    return true;
  46 }
  47
  48 bool virgl_res_needs_readback(struct virgl_context *vctx,
  49                               struct virgl_resource *res,
  50                               unsigned usage, unsigned level)
  51 {
  52    bool readback = true;
  53    if (res->clean[level])
  54       readback = false;
  55    else if (usage & PIPE_TRANSFER_DISCARD_RANGE)
  56       readback = false;
  57    else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) ==
  58             (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT))
  59       readback = false;
  60    return readback;
  61 }
  62
  63 static struct pipe_resource *virgl_resource_create(struct pipe_screen *screen,
  64                                                    const struct pipe_resource *templ)
  65 {
  66    unsigned vbind;
  67    struct virgl_screen *vs = virgl_screen(screen);
  68    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
  69
  70    res->u.b = *templ;
  71    res->u.b.screen = &vs->base;
  72    pipe_reference_init(&res->u.b.reference, 1);
  73    vbind = pipe_to_virgl_bind(templ->bind);
  74    virgl_resource_layout(&res->u.b, &res->metadata);
  75    res->hw_res = vs->vws->resource_create(vs->vws, templ->target,
  76                                           templ->format, vbind,
  77                                           templ->width0,
  78                                           templ->height0,
  79                                           templ->depth0,
  80                                           templ->array_size,
  81                                           templ->last_level,
  82                                           templ->nr_samples,
  83                                           res->metadata.total_size);
  84    if (!res->hw_res) {
  85       FREE(res);
  86       return NULL;
  87    }
  88
  89    for (uint32_t i = 0; i < VR_MAX_TEXTURE_2D_LEVELS; i++)
  90       res->clean[i] = TRUE;
  91
  92    if (templ->target == PIPE_BUFFER)
  93       virgl_buffer_init(res);
  94    else
  95       virgl_texture_init(res);
  96
  97    return &res->u.b;
  98
  99 }
 100
 101 static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen,
 102                                                         const struct pipe_resource *templ,
 103                                                         struct winsys_handle *whandle,
 104                                                         unsigned usage)
 105 {
 106    struct virgl_screen *vs = virgl_screen(screen);
 107    if (templ->target == PIPE_BUFFER)
 108       return NULL;
 109
 110    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
 111    res->u.b = *templ;
 112    res->u.b.screen = &vs->base;
 113    pipe_reference_init(&res->u.b.reference, 1);
 114
 115    res->hw_res = vs->vws->resource_create_from_handle(vs->vws, whandle);
 116    if (!res->hw_res) {
 117       FREE(res);
 118       return NULL;
 119    }
 120
 121    virgl_texture_init(res);
 122
 123    return &res->u.b;
 124 }
 125
 126 void virgl_init_screen_resource_functions(struct pipe_screen *screen)
 127 {
 128     screen->resource_create = virgl_resource_create;
 129     screen->resource_from_handle = virgl_resource_from_handle;
 130     screen->resource_get_handle = u_resource_get_handle_vtbl;
 131     screen->resource_destroy = u_resource_destroy_vtbl;
 132 }
 133
 134 static void virgl_buffer_subdata(struct pipe_context *pipe,
 135                                  struct pipe_resource *resource,
 136                                  unsigned usage, unsigned offset,
 137                                  unsigned size, const void *data)
 138 {
 139    struct pipe_box box;
 140
 141    if (offset == 0 && size == resource->width0)
 142       usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
 143    else
 144       usage |= PIPE_TRANSFER_DISCARD_RANGE;
 145
 146    u_box_1d(offset, size, &box);
 147
 148    if (size >= (VIRGL_MAX_CMDBUF_DWORDS * 4))
 149       u_default_buffer_subdata(pipe, resource, usage, offset, size, data);
 150    else
 151       virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0);
 152 }
 153
 154 void virgl_init_context_resource_functions(struct pipe_context *ctx)
 155 {
 156     ctx->transfer_map = u_transfer_map_vtbl;
 157     ctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 158     ctx->transfer_unmap = u_transfer_unmap_vtbl;
 159     ctx->buffer_subdata = virgl_buffer_subdata;
 160     ctx->texture_subdata = u_default_texture_subdata;
 161 }
 162
 163 void virgl_resource_layout(struct pipe_resource *pt,
 164                            struct virgl_resource_metadata *metadata)
 165 {
 166    unsigned level, nblocksy;
 167    unsigned width = pt->width0;
 168    unsigned height = pt->height0;
 169    unsigned depth = pt->depth0;
 170    unsigned buffer_size = 0;
 171
 172    for (level = 0; level <= pt->last_level; level++) {
 173       unsigned slices;
 174
 175       if (pt->target == PIPE_TEXTURE_CUBE)
 176          slices = 6;
 177       else if (pt->target == PIPE_TEXTURE_3D)
 178          slices = depth;
 179       else
 180          slices = pt->array_size;
 181
 182       nblocksy = util_format_get_nblocksy(pt->format, height);
 183       metadata->stride[level] = util_format_get_stride(pt->format, width);
 184       metadata->layer_stride[level] = nblocksy * metadata->stride[level];
 185       metadata->level_offset[level] = buffer_size;
 186
 187       buffer_size += slices * metadata->layer_stride[level];
 188
 189       width = u_minify(width, 1);
 190       height = u_minify(height, 1);
 191       depth = u_minify(depth, 1);
 192    }
 193
 194    if (pt->nr_samples <= 1)
 195       metadata->total_size = buffer_size;
 196    else /* don't create guest backing store for MSAA */
 197       metadata->total_size = 0;
 198 }
 199
 200 struct virgl_transfer *
 201 virgl_resource_create_transfer(struct slab_child_pool *pool,
 202                                struct pipe_resource *pres,
 203                                const struct virgl_resource_metadata *metadata,
 204                                unsigned level, unsigned usage,
 205                                const struct pipe_box *box)
 206 {
 207    struct virgl_transfer *trans;
 208    enum pipe_format format = pres->format;
 209    const unsigned blocksy = box->y / util_format_get_blockheight(format);
 210    const unsigned blocksx = box->x / util_format_get_blockwidth(format);
 211
 212    unsigned offset = metadata->level_offset[level];
 213    if (pres->target == PIPE_TEXTURE_CUBE ||
 214        pres->target == PIPE_TEXTURE_CUBE_ARRAY ||
 215        pres->target == PIPE_TEXTURE_3D ||
 216        pres->target == PIPE_TEXTURE_2D_ARRAY) {
 217       offset += box->z * metadata->layer_stride[level];
 218    }
 219    else if (pres->target == PIPE_TEXTURE_1D_ARRAY) {
 220       offset += box->z * metadata->stride[level];
 221       assert(box->y == 0);
 222    } else if (pres->target == PIPE_BUFFER) {
 223       assert(box->y == 0 && box->z == 0);
 224    } else {
 225       assert(box->z == 0);
 226    }
 227
 228    offset += blocksy * metadata->stride[level];
 229    offset += blocksx * util_format_get_blocksize(format);
 230
 231    trans = slab_alloc(pool);
 232    if (!trans)
 233       return NULL;
 234
 235    trans->base.resource = pres;
 236    trans->base.level = level;
 237    trans->base.usage = usage;
 238    trans->base.box = *box;
 239    trans->base.stride = metadata->stride[level];
 240    trans->base.layer_stride = metadata->layer_stride[level];
 241    trans->offset = offset;
 242    util_range_init(&trans->range);
 243
 244    if (trans->base.resource->target != PIPE_TEXTURE_3D &&
 245        trans->base.resource->target != PIPE_TEXTURE_CUBE &&
 246        trans->base.resource->target != PIPE_TEXTURE_1D_ARRAY &&
 247        trans->base.resource->target != PIPE_TEXTURE_2D_ARRAY &&
 248        trans->base.resource->target != PIPE_TEXTURE_CUBE_ARRAY)
 249       trans->l_stride = 0;
 250    else
 251       trans->l_stride = trans->base.layer_stride;
 252
 253    return trans;
 254 }
 255
 256 void virgl_resource_destroy_transfer(struct slab_child_pool *pool,
 257                                      struct virgl_transfer *trans)
 258 {
 259    util_range_destroy(&trans->range);
 260    slab_free(pool, trans);
 261 }
 262
 263 void virgl_resource_destroy(struct pipe_screen *screen,
 264                             struct pipe_resource *resource)
 265 {
 266    struct virgl_screen *vs = virgl_screen(screen);
 267    struct virgl_resource *res = virgl_resource(resource);
 268    vs->vws->resource_unref(vs->vws, res->hw_res);
 269    FREE(res);
 270 }
 271
 272 boolean virgl_resource_get_handle(struct pipe_screen *screen,
 273                                   struct pipe_resource *resource,
 274                                   struct winsys_handle *whandle)
 275 {
 276    struct virgl_screen *vs = virgl_screen(screen);
 277    struct virgl_resource *res = virgl_resource(resource);
 278
 279    if (res->u.b.target == PIPE_BUFFER)
 280       return FALSE;
 281
 282    return vs->vws->resource_get_handle(vs->vws, res->hw_res,
 283                                        res->metadata.stride[0],
 284                                        whandle);
 285 }
 286
 287 void virgl_resource_dirty(struct virgl_resource *res, uint32_t level)
 288 {
 289    if (res) {
 290       if (res->u.b.target == PIPE_BUFFER)
 291          res->clean[0] = FALSE;
 292       else
 293          res->clean[level] = FALSE;
 294    }
 295 }