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(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_mask & (1 << 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_mask & (1 << 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    res->clean_mask = (1 << VR_MAX_TEXTURE_2D_LEVELS) - 1;
  92
  93    if (templ->target == PIPE_BUFFER)
  94       virgl_buffer_init(res);
  95    else
  96       virgl_texture_init(res);
  97
  98    return &res->u.b;
  99
 100 }
 101
 102 static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen,
 103                                                         const struct pipe_resource *templ,
 104                                                         struct winsys_handle *whandle,
 105                                                         unsigned usage)
 106 {
 107    struct virgl_screen *vs = virgl_screen(screen);
 108    if (templ->target == PIPE_BUFFER)
 109       return NULL;
 110
 111    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
 112    res->u.b = *templ;
 113    res->u.b.screen = &vs->base;
 114    pipe_reference_init(&res->u.b.reference, 1);
 115
 116    res->hw_res = vs->vws->resource_create_from_handle(vs->vws, whandle);
 117    if (!res->hw_res) {
 118       FREE(res);
 119       return NULL;
 120    }
 121
 122    virgl_texture_init(res);
 123
 124    return &res->u.b;
 125 }
 126
 127 void virgl_init_screen_resource_functions(struct pipe_screen *screen)
 128 {
 129     screen->resource_create = virgl_resource_create;
 130     screen->resource_from_handle = virgl_resource_from_handle;
 131     screen->resource_get_handle = u_resource_get_handle_vtbl;
 132     screen->resource_destroy = u_resource_destroy_vtbl;
 133 }
 134
 135 static void virgl_buffer_subdata(struct pipe_context *pipe,
 136                                  struct pipe_resource *resource,
 137                                  unsigned usage, unsigned offset,
 138                                  unsigned size, const void *data)
 139 {
 140    struct pipe_box box;
 141
 142    if (offset == 0 && size == resource->width0)
 143       usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
 144    else
 145       usage |= PIPE_TRANSFER_DISCARD_RANGE;
 146
 147    u_box_1d(offset, size, &box);
 148
 149    if (resource->width0 >= getpagesize())
 150       u_default_buffer_subdata(pipe, resource, usage, offset, size, data);
 151    else
 152       virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0);
 153 }
 154
 155 void virgl_init_context_resource_functions(struct pipe_context *ctx)
 156 {
 157     ctx->transfer_map = u_transfer_map_vtbl;
 158     ctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 159     ctx->transfer_unmap = u_transfer_unmap_vtbl;
 160     ctx->buffer_subdata = virgl_buffer_subdata;
 161     ctx->texture_subdata = u_default_texture_subdata;
 162 }
 163
 164 void virgl_resource_layout(struct pipe_resource *pt,
 165                            struct virgl_resource_metadata *metadata)
 166 {
 167    unsigned level, nblocksy;
 168    unsigned width = pt->width0;
 169    unsigned height = pt->height0;
 170    unsigned depth = pt->depth0;
 171    unsigned buffer_size = 0;
 172
 173    for (level = 0; level <= pt->last_level; level++) {
 174       unsigned slices;
 175
 176       if (pt->target == PIPE_TEXTURE_CUBE)
 177          slices = 6;
 178       else if (pt->target == PIPE_TEXTURE_3D)
 179          slices = depth;
 180       else
 181          slices = pt->array_size;
 182
 183       nblocksy = util_format_get_nblocksy(pt->format, height);
 184       metadata->stride[level] = util_format_get_stride(pt->format, width);
 185       metadata->layer_stride[level] = nblocksy * metadata->stride[level];
 186       metadata->level_offset[level] = buffer_size;
 187
 188       buffer_size += slices * metadata->layer_stride[level];
 189
 190       width = u_minify(width, 1);
 191       height = u_minify(height, 1);
 192       depth = u_minify(depth, 1);
 193    }
 194
 195    if (pt->nr_samples <= 1)
 196       metadata->total_size = buffer_size;
 197    else /* don't create guest backing store for MSAA */
 198       metadata->total_size = 0;
 199 }
 200
 201 struct virgl_transfer *
 202 virgl_resource_create_transfer(struct slab_child_pool *pool,
 203                                struct pipe_resource *pres,
 204                                const struct virgl_resource_metadata *metadata,
 205                                unsigned level, unsigned usage,
 206                                const struct pipe_box *box)
 207 {
 208    struct virgl_transfer *trans;
 209    enum pipe_format format = pres->format;
 210    const unsigned blocksy = box->y / util_format_get_blockheight(format);
 211    const unsigned blocksx = box->x / util_format_get_blockwidth(format);
 212
 213    unsigned offset = metadata->level_offset[level];
 214    if (pres->target == PIPE_TEXTURE_CUBE ||
 215        pres->target == PIPE_TEXTURE_CUBE_ARRAY ||
 216        pres->target == PIPE_TEXTURE_3D ||
 217        pres->target == PIPE_TEXTURE_2D_ARRAY) {
 218       offset += box->z * metadata->layer_stride[level];
 219    }
 220    else if (pres->target == PIPE_TEXTURE_1D_ARRAY) {
 221       offset += box->z * metadata->stride[level];
 222       assert(box->y == 0);
 223    } else if (pres->target == PIPE_BUFFER) {
 224       assert(box->y == 0 && box->z == 0);
 225    } else {
 226       assert(box->z == 0);
 227    }
 228
 229    offset += blocksy * metadata->stride[level];
 230    offset += blocksx * util_format_get_blocksize(format);
 231
 232    trans = slab_alloc(pool);
 233    if (!trans)
 234       return NULL;
 235
 236    trans->base.resource = pres;
 237    trans->base.level = level;
 238    trans->base.usage = usage;
 239    trans->base.box = *box;
 240    trans->base.stride = metadata->stride[level];
 241    trans->base.layer_stride = metadata->layer_stride[level];
 242    trans->offset = offset;
 243    util_range_init(&trans->range);
 244
 245    if (trans->base.resource->target != PIPE_TEXTURE_3D &&
 246        trans->base.resource->target != PIPE_TEXTURE_CUBE &&
 247        trans->base.resource->target != PIPE_TEXTURE_1D_ARRAY &&
 248        trans->base.resource->target != PIPE_TEXTURE_2D_ARRAY &&
 249        trans->base.resource->target != PIPE_TEXTURE_CUBE_ARRAY)
 250       trans->l_stride = 0;
 251    else
 252       trans->l_stride = trans->base.layer_stride;
 253
 254    return trans;
 255 }
 256
 257 void virgl_resource_destroy_transfer(struct slab_child_pool *pool,
 258                                      struct virgl_transfer *trans)
 259 {
 260    util_range_destroy(&trans->range);
 261    slab_free(pool, trans);
 262 }
 263
 264 void virgl_resource_destroy(struct pipe_screen *screen,
 265                             struct pipe_resource *resource)
 266 {
 267    struct virgl_screen *vs = virgl_screen(screen);
 268    struct virgl_resource *res = virgl_resource(resource);
 269    vs->vws->resource_unref(vs->vws, res->hw_res);
 270    FREE(res);
 271 }
 272
 273 boolean virgl_resource_get_handle(struct pipe_screen *screen,
 274                                   struct pipe_resource *resource,
 275                                   struct winsys_handle *whandle)
 276 {
 277    struct virgl_screen *vs = virgl_screen(screen);
 278    struct virgl_resource *res = virgl_resource(resource);
 279
 280    if (res->u.b.target == PIPE_BUFFER)
 281       return FALSE;
 282
 283    return vs->vws->resource_get_handle(vs->vws, res->hw_res,
 284                                        res->metadata.stride[0],
 285                                        whandle);
 286 }
 287
 288 void virgl_resource_dirty(struct virgl_resource *res, uint32_t level)
 289 {
 290    if (res) {
 291       if (res->u.b.target == PIPE_BUFFER)
 292          res->clean_mask &= ~1;
 293       else
 294          res->clean_mask &= ~(1 << level);
 295    }
 296 }