src/gallium/drivers/freedreno/a6xx/fd6_resource.c

   1 /*
   2  * Copyright (C) 2018 Rob Clark <robclark@freedesktop.org>
   3  * Copyright © 2018 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 "fd6_resource.h"
  29
  30 /* indexed by cpp: */
  31 static const struct {
  32         unsigned pitchalign;
  33         unsigned heightalign;
  34 } tile_alignment[] = {
  35         [1]  = { 128, 32 },
  36         [2]  = { 128, 16 },
  37         [3]  = { 128, 16 },
  38         [4]  = {  64, 16 },
  39         [8]  = {  64, 16 },
  40         [12] = {  64, 16 },
  41         [16] = {  64, 16 },
  42 };
  43
  44 /* NOTE: good way to test this is:  (for example)
  45  *  piglit/bin/texelFetch fs sampler2D 100x100x1-100x300x1
  46  */
  47 static uint32_t
  48 setup_slices(struct fd_resource *rsc, uint32_t alignment, enum pipe_format format)
  49 {
  50         struct pipe_resource *prsc = &rsc->base;
  51         struct fd_screen *screen = fd_screen(prsc->screen);
  52         enum util_format_layout layout = util_format_description(format)->layout;
  53         uint32_t pitchalign = screen->gmem_alignw;
  54         uint32_t heightalign;
  55         uint32_t level, size = 0;
  56         uint32_t width = prsc->width0;
  57         uint32_t height = prsc->height0;
  58         uint32_t depth = prsc->depth0;
  59         /* in layer_first layout, the level (slice) contains just one
  60          * layer (since in fact the layer contains the slices)
  61          */
  62         uint32_t layers_in_level = rsc->layer_first ? 1 : prsc->array_size;
  63
  64         heightalign = tile_alignment[rsc->cpp].heightalign;
  65
  66         for (level = 0; level <= prsc->last_level; level++) {
  67                 struct fd_resource_slice *slice = fd_resource_slice(rsc, level);
  68                 bool linear_level = fd_resource_level_linear(prsc, level);
  69                 uint32_t aligned_height = height;
  70                 uint32_t blocks;
  71
  72                 if (rsc->tile_mode && !linear_level) {
  73                         pitchalign = tile_alignment[rsc->cpp].pitchalign;
  74                         aligned_height = align(aligned_height, heightalign);
  75                 } else {
  76                         pitchalign = 64;
  77
  78                         /* The blits used for mem<->gmem work at a granularity of
  79                          * 32x32, which can cause faults due to over-fetch on the
  80                          * last level.  The simple solution is to over-allocate a
  81                          * bit the last level to ensure any over-fetch is harmless.
  82                          * The pitch is already sufficiently aligned, but height
  83                          * may not be:
  84                          */
  85                         if ((level == prsc->last_level) && (prsc->target != PIPE_BUFFER))
  86                                 aligned_height = align(aligned_height, 32);
  87                 }
  88
  89                 if (layout == UTIL_FORMAT_LAYOUT_ASTC)
  90                         slice->pitch =
  91                                 util_align_npot(width, pitchalign * util_format_get_blockwidth(format));
  92                 else
  93                         slice->pitch = align(width, pitchalign);
  94
  95                 slice->offset = size;
  96                 blocks = util_format_get_nblocks(format, slice->pitch, aligned_height);
  97
  98                 /* 1d array and 2d array textures must all have the same layer size
  99                  * for each miplevel on a3xx. 3d textures can have different layer
 100                  * sizes for high levels, but the hw auto-sizer is buggy (or at least
 101                  * different than what this code does), so as soon as the layer size
 102                  * range gets into range, we stop reducing it.
 103                  */
 104                 if (prsc->target == PIPE_TEXTURE_3D && (
 105                                         level == 1 ||
 106                                         (level > 1 && rsc->slices[level - 1].size0 > 0xf000)))
 107                         slice->size0 = align(blocks * rsc->cpp, alignment);
 108                 else if (level == 0 || rsc->layer_first || alignment == 1)
 109                         slice->size0 = align(blocks * rsc->cpp, alignment);
 110                 else
 111                         slice->size0 = rsc->slices[level - 1].size0;
 112
 113 #if 0
 114                 debug_printf("%s: %ux%ux%u@%u: %2u: stride=%4u, size=%7u, aligned_height=%3u\n",
 115                                 util_format_name(prsc->format),
 116                                 prsc->width0, prsc->height0, prsc->depth0, rsc->cpp,
 117                                 level, slice->pitch * rsc->cpp,
 118                                 slice->size0 * depth * layers_in_level,
 119                                 aligned_height);
 120 #endif
 121
 122                 size += slice->size0 * depth * layers_in_level;
 123
 124                 width = u_minify(width, 1);
 125                 height = u_minify(height, 1);
 126                 depth = u_minify(depth, 1);
 127         }
 128
 129         return size;
 130 }
 131
 132 uint32_t
 133 fd6_setup_slices(struct fd_resource *rsc)
 134 {
 135         uint32_t alignment;
 136
 137         switch (rsc->base.target) {
 138         case PIPE_TEXTURE_3D:
 139                 rsc->layer_first = false;
 140                 alignment = 4096;
 141                 break;
 142         default:
 143                 rsc->layer_first = true;
 144                 alignment = 1;
 145                 break;
 146         }
 147
 148         return setup_slices(rsc, alignment, rsc->base.format);
 149 }