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65 lines
2.9 KiB
C
65 lines
2.9 KiB
C
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/*
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* Copyright (c) 2018 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "isl_gen9.h"
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#include "isl_gen12.h"
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#include "isl_priv.h"
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void
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isl_gen12_choose_image_alignment_el(const struct isl_device *dev,
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const struct isl_surf_init_info *restrict info,
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enum isl_tiling tiling,
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enum isl_dim_layout dim_layout,
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enum isl_msaa_layout msaa_layout,
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struct isl_extent3d *image_align_el)
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{
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/* Handled by isl_choose_image_alignment_el */
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assert(info->format != ISL_FORMAT_HIZ);
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if (isl_surf_usage_is_depth(info->usage)) {
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/* The alignment parameters for depth buffers are summarized in the
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* following table:
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*
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* Surface Format | MSAA | Align Width | Align Height
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* -----------------+-------------+-------------+--------------
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* D16_UNORM | 1x, 4x, 16x | 8 | 8
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* ----------------+-------------+-------------+--------------
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* D16_UNORM | 2x, 8x | 16 | 4
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* ----------------+-------------+-------------+--------------
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* other | any | 8 | 4
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* -----------------+-------------+-------------+--------------
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*/
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assert(isl_is_pow2(info->samples));
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*image_align_el =
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info->format != ISL_FORMAT_R16_UNORM ?
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isl_extent3d(8, 4, 1) :
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(info->samples == 2 || info->samples == 8 ?
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isl_extent3d(16, 4, 1) : isl_extent3d(8, 8, 1));
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} else if (isl_surf_usage_is_stencil(info->usage)) {
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*image_align_el = isl_extent3d(16, 8, 1);
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} else {
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isl_gen9_choose_image_alignment_el(dev, info, tiling, dim_layout,
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msaa_layout, image_align_el);
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}
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}
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