src/gallium/drivers/virgl/virgl_texture.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
  27 #include "virgl_context.h"
  28 #include "virgl_resource.h"
  29 #include "virgl_screen.h"
  30
  31 static void virgl_copy_region_with_blit(struct pipe_context *pipe,
  32                                         struct pipe_resource *dst,
  33                                         unsigned dst_level,
  34                                         unsigned dstx, unsigned dsty, unsigned dstz,
  35                                         struct pipe_resource *src,
  36                                         unsigned src_level,
  37                                         const struct pipe_box *src_box)
  38 {
  39    struct pipe_blit_info blit;
  40
  41    memset(&blit, 0, sizeof(blit));
  42    blit.src.resource = src;
  43    blit.src.format = src->format;
  44    blit.src.level = src_level;
  45    blit.src.box = *src_box;
  46    blit.dst.resource = dst;
  47    blit.dst.format = dst->format;
  48    blit.dst.level = dst_level;
  49    blit.dst.box.x = dstx;
  50    blit.dst.box.y = dsty;
  51    blit.dst.box.z = dstz;
  52    blit.dst.box.width = src_box->width;
  53    blit.dst.box.height = src_box->height;
  54    blit.dst.box.depth = src_box->depth;
  55    blit.mask = util_format_get_mask(src->format) &
  56       util_format_get_mask(dst->format);
  57    blit.filter = PIPE_TEX_FILTER_NEAREST;
  58
  59    if (blit.mask) {
  60       pipe->blit(pipe, &blit);
  61    }
  62 }
  63
  64 static unsigned temp_bind(unsigned orig)
  65 {
  66    if (orig & ~(PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL |
  67                 PIPE_BIND_SAMPLER_VIEW))
  68       fprintf(stderr, "Waring, possibly unhandled bind: %x\n", orig);
  69    return orig & (PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_RENDER_TARGET);
  70 }
  71
  72 static void virgl_init_temp_resource_from_box(struct pipe_resource *res,
  73                                               struct pipe_resource *orig,
  74                                               const struct pipe_box *box,
  75                                               unsigned level, unsigned flags)
  76 {
  77    memset(res, 0, sizeof(*res));
  78    res->bind = temp_bind(orig->bind);
  79    res->format = orig->format;
  80    res->width0 = box->width;
  81    res->height0 = box->height;
  82    res->depth0 = 1;
  83    res->array_size = 1;
  84    res->usage = PIPE_USAGE_STAGING;
  85    res->flags = flags;
  86
  87    /* We must set the correct texture target and dimensions for a 3D box. */
  88    if (box->depth > 1 && util_max_layer(orig, level) > 0)
  89       res->target = orig->target;
  90    else
  91       res->target = PIPE_TEXTURE_2D;
  92
  93    switch (res->target) {
  94    case PIPE_TEXTURE_1D_ARRAY:
  95    case PIPE_TEXTURE_2D_ARRAY:
  96    case PIPE_TEXTURE_CUBE_ARRAY:
  97       res->array_size = box->depth;
  98       break;
  99    case PIPE_TEXTURE_3D:
 100       res->depth0 = box->depth;
 101       break;
 102    default:
 103       break;
 104    }
 105 }
 106
 107 static void *virgl_texture_transfer_map(struct pipe_context *ctx,
 108                                         struct pipe_resource *resource,
 109                                         unsigned level,
 110                                         unsigned usage,
 111                                         const struct pipe_box *box,
 112                                         struct pipe_transfer **transfer)
 113 {
 114    struct virgl_context *vctx = virgl_context(ctx);
 115    struct virgl_screen *vs = virgl_screen(ctx->screen);
 116    struct virgl_resource *vtex = virgl_resource(resource);
 117    struct virgl_transfer *trans;
 118    void *ptr;
 119    boolean readback = TRUE;
 120    struct virgl_hw_res *hw_res;
 121    bool flush;
 122
 123    trans = virgl_resource_create_transfer(&vctx->transfer_pool, resource,
 124                                           &vtex->metadata, level, usage, box);
 125
 126    flush = virgl_res_needs_flush(vctx, trans);
 127    if (flush)
 128       ctx->flush(ctx, NULL, 0);
 129
 130    if (resource->nr_samples > 1) {
 131       struct pipe_resource tmp_resource;
 132       virgl_init_temp_resource_from_box(&tmp_resource, resource, box,
 133                                         level, 0);
 134
 135       trans->resolve_tmp = (struct virgl_resource *)ctx->screen->resource_create(ctx->screen, &tmp_resource);
 136
 137       virgl_copy_region_with_blit(ctx, &trans->resolve_tmp->u.b, 0, 0, 0, 0, resource, level, box);
 138       ctx->flush(ctx, NULL, 0);
 139       /* we want to do a resolve blit into the temporary */
 140       hw_res = trans->resolve_tmp->hw_res;
 141       struct virgl_resource_metadata *data = &trans->resolve_tmp->metadata;
 142       trans->base.stride = data->stride[level];
 143       trans->base.layer_stride = data->layer_stride[level];
 144       trans->offset = 0;
 145    } else {
 146       hw_res = vtex->hw_res;
 147       trans->resolve_tmp = NULL;
 148    }
 149
 150    readback = virgl_res_needs_readback(vctx, vtex, usage, level);
 151    if (readback) {
 152       vs->vws->transfer_get(vs->vws, hw_res, box, trans->base.stride,
 153                             trans->l_stride, trans->offset, level);
 154
 155       vs->vws->resource_wait(vs->vws, vtex->hw_res);
 156    }
 157
 158    ptr = vs->vws->resource_map(vs->vws, hw_res);
 159    if (!ptr) {
 160       virgl_resource_destroy_transfer(&vctx->transfer_pool, trans);
 161       return NULL;
 162    }
 163
 164    *transfer = &trans->base;
 165    return ptr + trans->offset;
 166 }
 167
 168 static void virgl_texture_transfer_unmap(struct pipe_context *ctx,
 169                                          struct pipe_transfer *transfer)
 170 {
 171    struct virgl_context *vctx = virgl_context(ctx);
 172    struct virgl_transfer *trans = virgl_transfer(transfer);
 173    struct virgl_resource *vtex = virgl_resource(transfer->resource);
 174
 175    if (trans->base.usage & PIPE_TRANSFER_WRITE) {
 176       if (!(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) {
 177          struct virgl_screen *vs = virgl_screen(ctx->screen);
 178          vctx->num_transfers++;
 179
 180          if (trans->resolve_tmp) {
 181             vs->vws->transfer_put(vs->vws, vtex->hw_res,
 182                                   &transfer->box, trans->base.stride,
 183                                   trans->l_stride, trans->offset,
 184                                   transfer->level);
 185          } else {
 186             virgl_transfer_queue_unmap(&vctx->queue, trans);
 187          }
 188       }
 189    }
 190
 191    if (trans->resolve_tmp) {
 192       pipe_resource_reference((struct pipe_resource **)&trans->resolve_tmp, NULL);
 193       virgl_resource_destroy_transfer(&vctx->transfer_pool, trans);
 194    } else if (!(trans->base.usage & PIPE_TRANSFER_WRITE))
 195       virgl_resource_destroy_transfer(&vctx->transfer_pool, trans);
 196 }
 197
 198 static const struct u_resource_vtbl virgl_texture_vtbl =
 199 {
 200    virgl_resource_get_handle,           /* get_handle */
 201    virgl_resource_destroy,              /* resource_destroy */
 202    virgl_texture_transfer_map,          /* transfer_map */
 203    NULL,                                /* transfer_flush_region */
 204    virgl_texture_transfer_unmap,        /* transfer_unmap */
 205 };
 206
 207 void virgl_texture_init(struct virgl_resource *res)
 208 {
 209    res->u.vtbl = &virgl_texture_vtbl;
 210 }