text: /*
   * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * Authors:
   *    Rob Clark <robclark@freedesktop.org>
   *    Jonathan Marek <jonathan@marek.ca>
   */
  
  #include "fd4_resource.h"
  
  uint32_t
  fd4_setup_slices(struct fd_resource *rsc)
  {
     struct pipe_resource *prsc = &rsc->b.b;
     enum pipe_format format = prsc->format;
     uint32_t level, size = 0;
     uint32_t width = prsc->width0;
     uint32_t height = prsc->height0;
     uint32_t depth = prsc->depth0;
     /* in layer_first layout, the level (slice) contains just one
      * layer (since in fact the layer contains the slices)
      */
     uint32_t layers_in_level, alignment;
  
     if (prsc->target == PIPE_TEXTURE_3D) {
        rsc->layout.layer_first = false;
        layers_in_level = prsc->array_size;
        alignment = 4096;
     } else {
        rsc->layout.layer_first = true;
        layers_in_level = 1;
        alignment = 1;
     }
  
     /* 32 pixel alignment */
     fdl_set_pitchalign(&rsc->layout, fdl_cpp_shift(&rsc->layout) + 5);
  
     for (level = 0; level <= prsc->last_level; level++) {
        struct fdl_slice *slice = fd_resource_slice(rsc, level);
        uint32_t pitch = fdl_pitch(&rsc->layout, level);
        uint32_t nblocksy = util_format_get_nblocksy(format, height);
  
        slice->offset = size;
  
        /* 3d textures can have different layer sizes for high levels, but the
         * hw auto-sizer is buggy (or at least different than what this code
         * does), so as soon as the layer size range gets into range, we stop
         * reducing it.
         */
        if (prsc->target == PIPE_TEXTURE_3D &&
            (level > 1 && fd_resource_slice(rsc, level - 1)->size0 <= 0xf000))
           slice->size0 = fd_resource_slice(rsc, level - 1)->size0;
        else
           slice->size0 = align(nblocksy * pitch, alignment);
  
        size += slice->size0 * depth * layers_in_level;
  
        width = u_minify(width, 1);
        height = u_minify(height, 1);
        depth = u_minify(depth, 1);
     }
  
     return size;
  }
  