src/gallium/drivers/freedreno/a5xx/fd5_resource.c

   1 /*
   2  * Copyright (C) 2018 Rob Clark <robclark@freedesktop.org>
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "fd5_resource.h"
  28
  29 /* indexed by cpp: */
  30 static const struct {
  31         unsigned pitchalign;
  32         unsigned heightalign;
  33 } tile_alignment[] = {
  34         [1]  = { 128, 32 },
  35         [2]  = { 128, 16 },
  36         [3]  = { 128, 16 },
  37         [4]  = {  64, 16 },
  38         [8]  = {  64, 16 },
  39         [12] = {  64, 16 },
  40         [16] = {  64, 16 },
  41 };
  42
  43 /* NOTE: good way to test this is:  (for example)
  44  *  piglit/bin/texelFetch fs sampler2D 100x100x1-100x300x1
  45  */
  46 static uint32_t
  47 setup_slices(struct fd_resource *rsc, uint32_t alignment, enum pipe_format format)
  48 {
  49         struct pipe_resource *prsc = &rsc->base;
  50         struct fd_screen *screen = fd_screen(prsc->screen);
  51         enum util_format_layout layout = util_format_description(format)->layout;
  52         uint32_t pitchalign = screen->gmem_alignw;
  53         uint32_t heightalign;
  54         uint32_t level, size = 0;
  55         uint32_t width = prsc->width0;
  56         uint32_t height = prsc->height0;
  57         uint32_t depth = prsc->depth0;
  58         /* in layer_first layout, the level (slice) contains just one
  59          * layer (since in fact the layer contains the slices)
  60          */
  61         uint32_t layers_in_level = rsc->layer_first ? 1 : prsc->array_size;
  62
  63         heightalign = tile_alignment[rsc->cpp].heightalign;
  64
  65         for (level = 0; level <= prsc->last_level; level++) {
  66                 struct fd_resource_slice *slice = fd_resource_slice(rsc, level);
  67                 bool linear_level = fd_resource_level_linear(prsc, level);
  68                 uint32_t aligned_height = height;
  69                 uint32_t blocks;
  70
  71                 if (rsc->tile_mode && !linear_level) {
  72                         pitchalign = tile_alignment[rsc->cpp].pitchalign;
  73                         aligned_height = align(aligned_height, heightalign);
  74                 } else {
  75                         pitchalign = 64;
  76
  77                         /* The blits used for mem<->gmem work at a granularity of
  78                          * 32x32, which can cause faults due to over-fetch on the
  79                          * last level.  The simple solution is to over-allocate a
  80                          * bit the last level to ensure any over-fetch is harmless.
  81                          * The pitch is already sufficiently aligned, but height
  82                          * may not be:
  83                          */
  84                         if ((level == prsc->last_level) && (prsc->target != PIPE_BUFFER))
  85                                 aligned_height = align(aligned_height, 32);
  86                 }
  87
  88                 if (layout == UTIL_FORMAT_LAYOUT_ASTC)
  89                         slice->pitch =
  90                                 util_align_npot(width, pitchalign * util_format_get_blockwidth(format));
  91                 else
  92                         slice->pitch = align(width, pitchalign);
  93
  94                 slice->offset = size;
  95                 blocks = util_format_get_nblocks(format, slice->pitch, aligned_height);
  96
  97                 /* 1d array and 2d array textures must all have the same layer size
  98                  * for each miplevel on a3xx. 3d textures can have different layer
  99                  * sizes for high levels, but the hw auto-sizer is buggy (or at least
 100                  * different than what this code does), so as soon as the layer size
 101                  * range gets into range, we stop reducing it.
 102                  */
 103                 if (prsc->target == PIPE_TEXTURE_3D && (
 104                                         level == 1 ||
 105                                         (level > 1 && rsc->slices[level - 1].size0 > 0xf000)))
 106                         slice->size0 = align(blocks * rsc->cpp, alignment);
 107                 else if (level == 0 || rsc->layer_first || alignment == 1)
 108                         slice->size0 = align(blocks * rsc->cpp, alignment);
 109                 else
 110                         slice->size0 = rsc->slices[level - 1].size0;
 111
 112 #if 0
 113                 debug_printf("%s: %ux%ux%u@%u: %2u: stride=%4u, size=%7u, aligned_height=%3u\n",
 114                                 util_format_name(prsc->format),
 115                                 prsc->width0, prsc->height0, prsc->depth0, rsc->cpp,
 116                                 level, slice->pitch * rsc->cpp,
 117                                 slice->size0 * depth * layers_in_level,
 118                                 aligned_height);
 119 #endif
 120
 121                 size += slice->size0 * depth * layers_in_level;
 122
 123                 width = u_minify(width, 1);
 124                 height = u_minify(height, 1);
 125                 depth = u_minify(depth, 1);
 126         }
 127
 128         return size;
 129 }
 130
 131 uint32_t
 132 fd5_setup_slices(struct fd_resource *rsc)
 133 {
 134         uint32_t alignment;
 135
 136         switch (rsc->base.target) {
 137         case PIPE_TEXTURE_3D:
 138                 rsc->layer_first = false;
 139                 alignment = 4096;
 140                 break;
 141         default:
 142                 rsc->layer_first = true;
 143                 alignment = 1;
 144                 break;
 145         }
 146
 147         return setup_slices(rsc, alignment, rsc->base.format);
 148 }