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 static void virgl_init_temp_resource_from_box(struct pipe_resource *res,
  64                                               struct pipe_resource *orig,
  65                                               const struct pipe_box *box,
  66                                               unsigned level, unsigned flags)
  67 {
  68    memset(res, 0, sizeof(*res));
  69    res->format = orig->format;
  70    res->width0 = box->width;
  71    res->height0 = box->height;
  72    res->depth0 = 1;
  73    res->array_size = 1;
  74    res->usage = PIPE_USAGE_STAGING;
  75    res->flags = flags;
  76
  77    /* We must set the correct texture target and dimensions for a 3D box. */
  78    if (box->depth > 1 && util_max_layer(orig, level) > 0)
  79       res->target = orig->target;
  80    else
  81       res->target = PIPE_TEXTURE_2D;
  82
  83    switch (res->target) {
  84    case PIPE_TEXTURE_1D_ARRAY:
  85    case PIPE_TEXTURE_2D_ARRAY:
  86    case PIPE_TEXTURE_CUBE_ARRAY:
  87       res->array_size = box->depth;
  88       break;
  89    case PIPE_TEXTURE_3D:
  90       res->depth0 = box->depth;
  91       break;
  92    default:
  93       break;
  94    }
  95 }
  96
  97 static void *virgl_texture_transfer_map(struct pipe_context *ctx,
  98                                         struct pipe_resource *resource,
  99                                         unsigned level,
 100                                         unsigned usage,
 101                                         const struct pipe_box *box,
 102                                         struct pipe_transfer **transfer)
 103 {
 104    struct virgl_context *vctx = virgl_context(ctx);
 105    struct virgl_screen *vs = virgl_screen(ctx->screen);
 106    struct virgl_resource *vtex = virgl_resource(resource);
 107    struct virgl_transfer *trans;
 108    void *ptr;
 109    boolean readback = TRUE;
 110    struct virgl_hw_res *hw_res;
 111    bool flush;
 112
 113    trans = virgl_resource_create_transfer(&vctx->transfer_pool, resource,
 114                                           &vtex->metadata, level, usage, box);
 115
 116    flush = virgl_res_needs_flush(vctx, trans);
 117    if (flush)
 118       ctx->flush(ctx, NULL, 0);
 119
 120    if (resource->nr_samples > 1) {
 121       struct pipe_resource tmp_resource;
 122       virgl_init_temp_resource_from_box(&tmp_resource, resource, box,
 123                                         level, 0);
 124
 125       trans->resolve_tmp = (struct virgl_resource *)ctx->screen->resource_create(ctx->screen, &tmp_resource);
 126
 127       virgl_copy_region_with_blit(ctx, &trans->resolve_tmp->u.b, 0, 0, 0, 0, resource, level, box);
 128       ctx->flush(ctx, NULL, 0);
 129       /* we want to do a resolve blit into the temporary */
 130       hw_res = trans->resolve_tmp->hw_res;
 131       struct virgl_resource_metadata *data = &trans->resolve_tmp->metadata;
 132       trans->base.stride = data->stride[level];
 133       trans->base.layer_stride = data->layer_stride[level];
 134       trans->offset = 0;
 135    } else {
 136       hw_res = vtex->hw_res;
 137       trans->resolve_tmp = NULL;
 138    }
 139
 140    readback = virgl_res_needs_readback(vctx, vtex, usage, level);
 141    if (readback) {
 142       vs->vws->transfer_get(vs->vws, hw_res, box, trans->base.stride,
 143                             trans->l_stride, trans->offset, level);
 144
 145       vs->vws->resource_wait(vs->vws, vtex->hw_res);
 146    }
 147
 148    ptr = vs->vws->resource_map(vs->vws, hw_res);
 149    if (!ptr) {
 150       virgl_resource_destroy_transfer(&vctx->transfer_pool, trans);
 151       return NULL;
 152    }
 153
 154    *transfer = &trans->base;
 155    return ptr + trans->offset;
 156 }
 157
 158 static void virgl_texture_transfer_unmap(struct pipe_context *ctx,
 159                                          struct pipe_transfer *transfer)
 160 {
 161    struct virgl_context *vctx = virgl_context(ctx);
 162    struct virgl_transfer *trans = virgl_transfer(transfer);
 163    struct virgl_resource *vtex = virgl_resource(transfer->resource);
 164
 165    if (trans->base.usage & PIPE_TRANSFER_WRITE) {
 166       if (!(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) {
 167          struct virgl_screen *vs = virgl_screen(ctx->screen);
 168          vctx->num_transfers++;
 169
 170          if (trans->resolve_tmp) {
 171             vs->vws->transfer_put(vs->vws, vtex->hw_res,
 172                                   &transfer->box, trans->base.stride,
 173                                   trans->l_stride, trans->offset,
 174                                   transfer->level);
 175          } else {
 176             virgl_transfer_queue_unmap(&vctx->queue, trans);
 177          }
 178       }
 179    }
 180
 181    if (trans->resolve_tmp) {
 182       pipe_resource_reference((struct pipe_resource **)&trans->resolve_tmp, NULL);
 183       virgl_resource_destroy_transfer(&vctx->transfer_pool, trans);
 184    }
 185 }
 186
 187 static const struct u_resource_vtbl virgl_texture_vtbl =
 188 {
 189    virgl_resource_get_handle,           /* get_handle */
 190    virgl_resource_destroy,              /* resource_destroy */
 191    virgl_texture_transfer_map,          /* transfer_map */
 192    NULL,                                /* transfer_flush_region */
 193    virgl_texture_transfer_unmap,        /* transfer_unmap */
 194 };
 195
 196 void virgl_texture_init(struct virgl_resource *res)
 197 {
 198    res->u.vtbl = &virgl_texture_vtbl;
 199 }