src/freedreno/fdl/fd5_layout.c

   1 /*
   2  * Copyright (C) 2018 Rob Clark <robclark@freedesktop.org>
   3  * Copyright © 2018-2019 Google, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Authors:
  25  *    Rob Clark <robclark@freedesktop.org>
  26  */
  27
  28 #include <stdio.h>
  29
  30 #include "freedreno_layout.h"
  31
  32 void
  33 fdl5_layout(struct fdl_layout *layout,
  34                 enum pipe_format format, uint32_t nr_samples,
  35                 uint32_t width0, uint32_t height0, uint32_t depth0,
  36                 uint32_t mip_levels, uint32_t array_size, bool is_3d)
  37 {
  38         assert(nr_samples > 0);
  39         layout->width0 = width0;
  40         layout->height0 = height0;
  41         layout->depth0 = depth0;
  42
  43         layout->cpp = util_format_get_blocksize(format);
  44         layout->cpp *= nr_samples;
  45         layout->cpp_shift = ffs(layout->cpp) - 1;
  46
  47         layout->format = format;
  48         layout->nr_samples = nr_samples;
  49         layout->layer_first = !is_3d;
  50
  51         uint32_t heightalign = layout->cpp == 1 ? 32 : 16;
  52         /* in layer_first layout, the level (slice) contains just one
  53          * layer (since in fact the layer contains the slices)
  54          */
  55         uint32_t layers_in_level = layout->layer_first ? 1 : array_size;
  56
  57         /* use 128 pixel alignment for cpp=1 and cpp=2 */
  58         if (layout->cpp < 4 && layout->tile_mode)
  59                 fdl_set_pitchalign(layout, fdl_cpp_shift(layout) + 7);
  60         else
  61                 fdl_set_pitchalign(layout, fdl_cpp_shift(layout) + 6);
  62
  63         for (uint32_t level = 0; level < mip_levels; level++) {
  64                 struct fdl_slice *slice = &layout->slices[level];
  65                 uint32_t tile_mode = fdl_tile_mode(layout, level);
  66                 uint32_t pitch = fdl_pitch(layout, level);
  67                 uint32_t nblocksy = util_format_get_nblocksy(format, u_minify(height0, level));
  68
  69                 if (tile_mode) {
  70                         nblocksy = align(nblocksy, heightalign);
  71                 } else {
  72                         /* The blits used for mem<->gmem work at a granularity of
  73                          * 32x32, which can cause faults due to over-fetch on the
  74                          * last level.  The simple solution is to over-allocate a
  75                          * bit the last level to ensure any over-fetch is harmless.
  76                          * The pitch is already sufficiently aligned, but height
  77                          * may not be:
  78                          */
  79                         if (level == mip_levels - 1)
  80                                 nblocksy = align(nblocksy, 32);
  81                 }
  82
  83                 slice->offset = layout->size;
  84
  85                 const int alignment = is_3d ? 4096 : 1;
  86
  87                 /* 1d array and 2d array textures must all have the same layer size
  88                  * for each miplevel on a3xx. 3d textures can have different layer
  89                  * sizes for high levels, but the hw auto-sizer is buggy (or at least
  90                  * different than what this code does), so as soon as the layer size
  91                  * range gets into range, we stop reducing it.
  92                  */
  93                 if (is_3d && (
  94                                         level == 1 ||
  95                                         (level > 1 && layout->slices[level - 1].size0 > 0xf000)))
  96                         slice->size0 = align(nblocksy * pitch, alignment);
  97                 else if (level == 0 || layout->layer_first || alignment == 1)
  98                         slice->size0 = align(nblocksy * pitch, alignment);
  99                 else
 100                         slice->size0 = layout->slices[level - 1].size0;
 101
 102                 layout->size += slice->size0 * u_minify(depth0, level) * layers_in_level;
 103         }
 104 }
 105