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_encode.h"
  29 #include "virgl_resource.h"
  30 #include "virgl_screen.h"
  31
  32 static void virgl_copy_region_with_blit(struct pipe_context *pipe,
  33                                         struct pipe_resource *dst,
  34                                         unsigned dst_level,
  35                                         const struct pipe_box *dst_box,
  36                                         struct pipe_resource *src,
  37                                         unsigned src_level,
  38                                         const struct pipe_box *src_box)
  39 {
  40    struct pipe_blit_info blit;
  41
  42    memset(&blit, 0, sizeof(blit));
  43    blit.src.resource = src;
  44    blit.src.format = src->format;
  45    blit.src.level = src_level;
  46    blit.src.box = *src_box;
  47    blit.dst.resource = dst;
  48    blit.dst.format = dst->format;
  49    blit.dst.level = dst_level;
  50    blit.dst.box.x = dst_box->x;
  51    blit.dst.box.y = dst_box->y;
  52    blit.dst.box.z = dst_box->z;
  53    blit.dst.box.width = dst_box->width;
  54    blit.dst.box.height = dst_box->height;
  55    blit.dst.box.depth = dst_box->depth;
  56    blit.mask = util_format_get_mask(src->format) &
  57       util_format_get_mask(dst->format);
  58    blit.filter = PIPE_TEX_FILTER_NEAREST;
  59
  60    if (blit.mask) {
  61       pipe->blit(pipe, &blit);
  62    }
  63 }
  64
  65 static unsigned temp_bind(unsigned orig)
  66 {
  67    unsigned warn = ~(PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL |
  68                      PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_DISPLAY_TARGET);
  69    if (orig & warn)
  70       debug_printf("VIRGL: Warning, possibly unhandled bind: %x\n",
  71                    orig & warn);
  72
  73    return orig & (PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_RENDER_TARGET);
  74 }
  75
  76 static void virgl_init_temp_resource_from_box(struct pipe_resource *res,
  77                                               struct pipe_resource *orig,
  78                                               const struct pipe_box *box,
  79                                               unsigned level, unsigned flags,
  80                                               enum pipe_format fmt)
  81 {
  82    memset(res, 0, sizeof(*res));
  83    res->bind = temp_bind(orig->bind);
  84    res->format = fmt;
  85    res->width0 = box->width;
  86    res->height0 = box->height;
  87    res->depth0 = 1;
  88    res->array_size = 1;
  89    res->usage = PIPE_USAGE_STAGING;
  90    res->flags = flags;
  91
  92    /* We must set the correct texture target and dimensions for a 3D box. */
  93    if (box->depth > 1 && util_max_layer(orig, level) > 0)
  94       res->target = orig->target;
  95    else
  96       res->target = PIPE_TEXTURE_2D;
  97
  98    if (res->target != PIPE_BUFFER)
  99       res->bind = PIPE_BIND_RENDER_TARGET;
 100
 101    switch (res->target) {
 102    case PIPE_TEXTURE_1D_ARRAY:
 103    case PIPE_TEXTURE_2D_ARRAY:
 104    case PIPE_TEXTURE_CUBE_ARRAY:
 105       res->array_size = box->depth;
 106       break;
 107    case PIPE_TEXTURE_3D:
 108       res->depth0 = box->depth;
 109       break;
 110    default:
 111       break;
 112    }
 113 }
 114
 115 static void *texture_transfer_map_resolve(struct pipe_context *ctx,
 116                                           struct pipe_resource *resource,
 117                                           unsigned level,
 118                                           unsigned usage,
 119                                           const struct pipe_box *box,
 120                                           struct pipe_transfer **transfer)
 121 {
 122    struct virgl_context *vctx = virgl_context(ctx);
 123    struct virgl_resource *vtex = virgl_resource(resource);
 124    struct pipe_resource templ, *resolve_tmp;
 125    struct virgl_transfer *trans;
 126
 127    trans = virgl_resource_create_transfer(vctx, resource,
 128                                           &vtex->metadata, level, usage, box);
 129    if (!trans)
 130       return NULL;
 131
 132    enum pipe_format fmt = resource->format;
 133    if (!virgl_has_readback_format(ctx->screen, pipe_to_virgl_format(fmt))) {
 134       if (util_format_fits_8unorm(util_format_description(fmt)))
 135          fmt = PIPE_FORMAT_R8G8B8A8_UNORM;
 136       else if (util_format_is_pure_sint(fmt))
 137          fmt = PIPE_FORMAT_R32G32B32A32_SINT;
 138       else if (util_format_is_pure_uint(fmt))
 139          fmt = PIPE_FORMAT_R32G32B32A32_UINT;
 140       else
 141          fmt = PIPE_FORMAT_R32G32B32A32_FLOAT;
 142       assert(virgl_has_readback_format(ctx->screen, pipe_to_virgl_format(fmt)));
 143    }
 144
 145    struct pipe_box dst_box = *box;
 146    dst_box.x = dst_box.y = dst_box.z = 0;
 147    if (usage & PIPE_TRANSFER_READ) {
 148       /* readback should scale to the block size */
 149       dst_box.width = align(dst_box.width,
 150             util_format_get_blockwidth(resource->format));
 151       dst_box.height = align(dst_box.height,
 152             util_format_get_blockheight(resource->format));
 153    }
 154
 155    virgl_init_temp_resource_from_box(&templ, resource, &dst_box, level, 0, fmt);
 156
 157    resolve_tmp = ctx->screen->resource_create(ctx->screen, &templ);
 158    if (!resolve_tmp)
 159       return NULL;
 160
 161    if (usage & PIPE_TRANSFER_READ) {
 162       virgl_copy_region_with_blit(ctx, resolve_tmp, 0, &dst_box, resource,
 163                                   level, box);
 164       ctx->flush(ctx, NULL, 0);
 165    }
 166
 167    void *ptr = virgl_resource_transfer_map(ctx, resolve_tmp, 0, usage, &dst_box,
 168                                            &trans->resolve_transfer);
 169    if (!ptr)
 170       goto fail;
 171
 172    *transfer = &trans->base;
 173    if (fmt == resource->format) {
 174       trans->base.stride = trans->resolve_transfer->stride;
 175       trans->base.layer_stride = trans->resolve_transfer->layer_stride;
 176       return ptr;
 177    } else {
 178       if (usage & PIPE_TRANSFER_READ) {
 179          struct virgl_winsys *vws = virgl_screen(ctx->screen)->vws;
 180          void *src = ptr;
 181          ptr = vws->resource_map(vws, vtex->hw_res);
 182          if (!ptr)
 183             goto fail;
 184
 185          if (!util_format_translate_3d(resource->format,
 186                                        ptr + vtex->metadata.level_offset[level],
 187                                        trans->base.stride,
 188                                        trans->base.layer_stride,
 189                                        box->x, box->y, box->z,
 190                                        fmt,
 191                                        src,
 192                                        trans->resolve_transfer->stride,
 193                                        trans->resolve_transfer->layer_stride,
 194                                        0, 0, 0,
 195                                        dst_box.width,
 196                                        dst_box.height,
 197                                        dst_box.depth)) {
 198             debug_printf("failed to translate format %s to %s\n",
 199                          util_format_short_name(fmt),
 200                          util_format_short_name(resource->format));
 201             goto fail;
 202          }
 203       }
 204
 205       if ((usage & PIPE_TRANSFER_WRITE) == 0)
 206          pipe_resource_reference(&trans->resolve_transfer->resource, NULL);
 207
 208       return ptr + trans->offset;
 209    }
 210
 211 fail:
 212    pipe_resource_reference(&resolve_tmp, NULL);
 213    virgl_resource_destroy_transfer(vctx, trans);
 214    return NULL;
 215 }
 216
 217 static bool needs_resolve(struct pipe_screen *screen,
 218                           struct pipe_resource *resource, unsigned usage)
 219 {
 220    if (resource->nr_samples > 1)
 221       return true;
 222
 223    if (usage & PIPE_TRANSFER_READ)
 224       return !util_format_is_depth_or_stencil(resource->format) &&
 225              !virgl_has_readback_format(screen, pipe_to_virgl_format(resource->format));
 226
 227    return false;
 228 }
 229
 230 static void *virgl_texture_transfer_map(struct pipe_context *ctx,
 231                                         struct pipe_resource *resource,
 232                                         unsigned level,
 233                                         unsigned usage,
 234                                         const struct pipe_box *box,
 235                                         struct pipe_transfer **transfer)
 236 {
 237    if (needs_resolve(ctx->screen, resource, usage))
 238       return texture_transfer_map_resolve(ctx, resource, level, usage, box,
 239                                           transfer);
 240
 241    return virgl_resource_transfer_map(ctx, resource, level, usage, box, transfer);
 242 }
 243
 244 static void flush_data(struct pipe_context *ctx,
 245                        struct virgl_transfer *trans,
 246                        const struct pipe_box *box)
 247 {
 248    struct virgl_winsys *vws = virgl_screen(ctx->screen)->vws;
 249    vws->transfer_put(vws, trans->hw_res, box,
 250                      trans->base.stride, trans->l_stride, trans->offset,
 251                      trans->base.level);
 252 }
 253
 254 static void virgl_texture_transfer_unmap(struct pipe_context *ctx,
 255                                          struct pipe_transfer *transfer)
 256 {
 257    struct virgl_context *vctx = virgl_context(ctx);
 258    struct virgl_transfer *trans = virgl_transfer(transfer);
 259    bool queue_unmap = false;
 260
 261    if (transfer->usage & PIPE_TRANSFER_WRITE &&
 262        (transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT) == 0) {
 263
 264       if (trans->resolve_transfer && (trans->base.resource->format ==
 265           trans->resolve_transfer->resource->format)) {
 266          flush_data(ctx, virgl_transfer(trans->resolve_transfer),
 267                     &trans->resolve_transfer->box);
 268
 269          /* FINISHME: In case the destination format isn't renderable here, the
 270           * blit here will currently fail. This could for instance happen if the
 271           * mapped resource is of a compressed format, and it's mapped with both
 272           * read and write usage.
 273           */
 274
 275          virgl_copy_region_with_blit(ctx,
 276                                      trans->base.resource, trans->base.level,
 277                                      &transfer->box,
 278                                      trans->resolve_transfer->resource, 0,
 279                                      &trans->resolve_transfer->box);
 280          ctx->flush(ctx, NULL, 0);
 281       } else
 282          queue_unmap = true;
 283    }
 284
 285    if (trans->resolve_transfer) {
 286       pipe_resource_reference(&trans->resolve_transfer->resource, NULL);
 287       virgl_resource_destroy_transfer(vctx,
 288                                       virgl_transfer(trans->resolve_transfer));
 289    }
 290
 291    if (queue_unmap) {
 292       if (trans->copy_src_hw_res) {
 293          virgl_encode_copy_transfer(vctx, trans);
 294          virgl_resource_destroy_transfer(vctx, trans);
 295       } else {
 296          virgl_transfer_queue_unmap(&vctx->queue, trans);
 297       }
 298    } else {
 299       virgl_resource_destroy_transfer(vctx, trans);
 300    }
 301 }
 302
 303 static const struct u_resource_vtbl virgl_texture_vtbl =
 304 {
 305    virgl_resource_get_handle,           /* get_handle */
 306    virgl_resource_destroy,              /* resource_destroy */
 307    virgl_texture_transfer_map,          /* transfer_map */
 308    NULL,                                /* transfer_flush_region */
 309    virgl_texture_transfer_unmap,        /* transfer_unmap */
 310 };
 311
 312 void virgl_texture_init(struct virgl_resource *res)
 313 {
 314    res->u.vtbl = &virgl_texture_vtbl;
 315 }