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_resource *res,
  32                                 unsigned usage)
  33 {
  34    struct virgl_screen *vs = virgl_screen(vctx->base.screen);
  35
  36    if ((!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) && vs->vws->res_is_referenced(vs->vws, vctx->cbuf, res->hw_res)) {
  37       return true;
  38    }
  39    return false;
  40 }
  41
  42 bool virgl_res_needs_readback(struct virgl_context *vctx,
  43                               struct virgl_resource *res,
  44                               unsigned usage)
  45 {
  46    bool readback = true;
  47    if (res->clean)
  48       readback = false;
  49    else if (usage & PIPE_TRANSFER_DISCARD_RANGE)
  50       readback = false;
  51    else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) ==
  52             (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT))
  53       readback = false;
  54    return readback;
  55 }
  56
  57 static struct pipe_resource *virgl_resource_create(struct pipe_screen *screen,
  58                                                    const struct pipe_resource *templ)
  59 {
  60    unsigned vbind;
  61    struct virgl_screen *vs = virgl_screen(screen);
  62    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
  63
  64    res->clean = TRUE;
  65    res->u.b = *templ;
  66    res->u.b.screen = &vs->base;
  67    pipe_reference_init(&res->u.b.reference, 1);
  68    vbind = pipe_to_virgl_bind(templ->bind);
  69    virgl_resource_layout(&res->u.b, &res->metadata);
  70    res->hw_res = vs->vws->resource_create(vs->vws, templ->target,
  71                                           templ->format, vbind,
  72                                           templ->width0,
  73                                           templ->height0,
  74                                           templ->depth0,
  75                                           templ->array_size,
  76                                           templ->last_level,
  77                                           templ->nr_samples,
  78                                           res->metadata.total_size);
  79    if (!res->hw_res) {
  80       FREE(res);
  81       return NULL;
  82    }
  83
  84    if (templ->target == PIPE_BUFFER)
  85       virgl_buffer_init(res);
  86    else
  87       virgl_texture_init(res);
  88
  89    return &res->u.b;
  90
  91 }
  92
  93 static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen,
  94                                                         const struct pipe_resource *templ,
  95                                                         struct winsys_handle *whandle,
  96                                                         unsigned usage)
  97 {
  98    struct virgl_screen *vs = virgl_screen(screen);
  99    if (templ->target == PIPE_BUFFER)
 100       return NULL;
 101
 102    struct virgl_resource *res = CALLOC_STRUCT(virgl_resource);
 103    res->u.b = *templ;
 104    res->u.b.screen = &vs->base;
 105    pipe_reference_init(&res->u.b.reference, 1);
 106
 107    res->hw_res = vs->vws->resource_create_from_handle(vs->vws, whandle);
 108    if (!res->hw_res) {
 109       FREE(res);
 110       return NULL;
 111    }
 112
 113    virgl_texture_init(res);
 114
 115    return &res->u.b;
 116 }
 117
 118 void virgl_init_screen_resource_functions(struct pipe_screen *screen)
 119 {
 120     screen->resource_create = virgl_resource_create;
 121     screen->resource_from_handle = virgl_resource_from_handle;
 122     screen->resource_get_handle = u_resource_get_handle_vtbl;
 123     screen->resource_destroy = u_resource_destroy_vtbl;
 124 }
 125
 126 static void virgl_buffer_subdata(struct pipe_context *pipe,
 127                                  struct pipe_resource *resource,
 128                                  unsigned usage, unsigned offset,
 129                                  unsigned size, const void *data)
 130 {
 131    struct pipe_box box;
 132
 133    if (offset == 0 && size == resource->width0)
 134       usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
 135    else
 136       usage |= PIPE_TRANSFER_DISCARD_RANGE;
 137
 138    u_box_1d(offset, size, &box);
 139
 140    if (size >= (VIRGL_MAX_CMDBUF_DWORDS * 4))
 141       u_default_buffer_subdata(pipe, resource, usage, offset, size, data);
 142    else
 143       virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0);
 144 }
 145
 146 void virgl_init_context_resource_functions(struct pipe_context *ctx)
 147 {
 148     ctx->transfer_map = u_transfer_map_vtbl;
 149     ctx->transfer_flush_region = u_transfer_flush_region_vtbl;
 150     ctx->transfer_unmap = u_transfer_unmap_vtbl;
 151     ctx->buffer_subdata = virgl_buffer_subdata;
 152     ctx->texture_subdata = u_default_texture_subdata;
 153 }
 154
 155 void virgl_resource_layout(struct pipe_resource *pt,
 156                            struct virgl_resource_metadata *metadata)
 157 {
 158    unsigned level, nblocksy;
 159    unsigned width = pt->width0;
 160    unsigned height = pt->height0;
 161    unsigned depth = pt->depth0;
 162    unsigned buffer_size = 0;
 163
 164    for (level = 0; level <= pt->last_level; level++) {
 165       unsigned slices;
 166
 167       if (pt->target == PIPE_TEXTURE_CUBE)
 168          slices = 6;
 169       else if (pt->target == PIPE_TEXTURE_3D)
 170          slices = depth;
 171       else
 172          slices = pt->array_size;
 173
 174       nblocksy = util_format_get_nblocksy(pt->format, height);
 175       metadata->stride[level] = util_format_get_stride(pt->format, width);
 176       metadata->layer_stride[level] = nblocksy * metadata->stride[level];
 177       metadata->level_offset[level] = buffer_size;
 178
 179       buffer_size += slices * metadata->layer_stride[level];
 180
 181       width = u_minify(width, 1);
 182       height = u_minify(height, 1);
 183       depth = u_minify(depth, 1);
 184    }
 185
 186    if (pt->nr_samples <= 1)
 187       metadata->total_size = buffer_size;
 188    else /* don't create guest backing store for MSAA */
 189       metadata->total_size = 0;
 190 }
 191
 192 struct virgl_transfer *
 193 virgl_resource_create_transfer(struct pipe_context *ctx,
 194                                struct pipe_resource *pres,
 195                                const struct virgl_resource_metadata *metadata,
 196                                unsigned level, unsigned usage,
 197                                const struct pipe_box *box)
 198 {
 199    struct virgl_transfer *trans;
 200    enum pipe_format format = pres->format;
 201    struct virgl_context *vctx = virgl_context(ctx);
 202    const unsigned blocksy = box->y / util_format_get_blockheight(format);
 203    const unsigned blocksx = box->x / util_format_get_blockwidth(format);
 204
 205    unsigned offset = metadata->level_offset[level];
 206    if (pres->target == PIPE_TEXTURE_CUBE ||
 207        pres->target == PIPE_TEXTURE_CUBE_ARRAY ||
 208        pres->target == PIPE_TEXTURE_3D ||
 209        pres->target == PIPE_TEXTURE_2D_ARRAY) {
 210       offset += box->z * metadata->layer_stride[level];
 211    }
 212    else if (pres->target == PIPE_TEXTURE_1D_ARRAY) {
 213       offset += box->z * metadata->stride[level];
 214       assert(box->y == 0);
 215    } else if (pres->target == PIPE_BUFFER) {
 216       assert(box->y == 0 && box->z == 0);
 217    } else {
 218       assert(box->z == 0);
 219    }
 220
 221    offset += blocksy * metadata->stride[level];
 222    offset += blocksx * util_format_get_blocksize(format);
 223
 224    trans = slab_alloc(&vctx->transfer_pool);
 225    if (!trans)
 226       return NULL;
 227
 228    trans->base.resource = pres;
 229    trans->base.level = level;
 230    trans->base.usage = usage;
 231    trans->base.box = *box;
 232    trans->base.stride = metadata->stride[level];
 233    trans->base.layer_stride = metadata->layer_stride[level];
 234    trans->offset = offset;
 235    util_range_init(&trans->range);
 236
 237    if (trans->base.resource->target != PIPE_TEXTURE_3D &&
 238        trans->base.resource->target != PIPE_TEXTURE_CUBE &&
 239        trans->base.resource->target != PIPE_TEXTURE_1D_ARRAY &&
 240        trans->base.resource->target != PIPE_TEXTURE_2D_ARRAY &&
 241        trans->base.resource->target != PIPE_TEXTURE_CUBE_ARRAY)
 242       trans->l_stride = 0;
 243    else
 244       trans->l_stride = trans->base.layer_stride;
 245
 246    return trans;
 247 }
 248
 249 void virgl_resource_destroy_transfer(struct virgl_context *vctx,
 250                                      struct virgl_transfer *trans)
 251 {
 252    util_range_destroy(&trans->range);
 253    slab_free(&vctx->transfer_pool, trans);
 254 }
 255
 256 void virgl_resource_destroy(struct pipe_screen *screen,
 257                             struct pipe_resource *resource)
 258 {
 259    struct virgl_screen *vs = virgl_screen(screen);
 260    struct virgl_resource *res = virgl_resource(resource);
 261    vs->vws->resource_unref(vs->vws, res->hw_res);
 262    FREE(res);
 263 }
 264
 265 boolean virgl_resource_get_handle(struct pipe_screen *screen,
 266                                   struct pipe_resource *resource,
 267                                   struct winsys_handle *whandle)
 268 {
 269    struct virgl_screen *vs = virgl_screen(screen);
 270    struct virgl_resource *res = virgl_resource(resource);
 271
 272    if (res->u.b.target == PIPE_BUFFER)
 273       return FALSE;
 274
 275    return vs->vws->resource_get_handle(vs->vws, res->hw_res,
 276                                        res->metadata.stride[0],
 277                                        whandle);
 278 }