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5b1efb65ce
The rest of ISL already follows this approach. Be consistent and resolve the final references. Signed-off-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Chad Versace <chadversary@chromium.org>
75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
/*
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* Copyright 2015 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_gen4.h"
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#include "isl_priv.h"
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bool
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isl_gen4_choose_msaa_layout(const struct isl_device *dev,
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const struct isl_surf_init_info *info,
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enum isl_tiling tiling,
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enum isl_msaa_layout *msaa_layout)
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{
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/* Gen4 and Gen5 do not support MSAA */
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assert(info->samples >= 1);
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*msaa_layout = ISL_MSAA_LAYOUT_NONE;
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return true;
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}
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void
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isl_gen4_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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assert(info->samples == 1);
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assert(msaa_layout == ISL_MSAA_LAYOUT_NONE);
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assert(!isl_tiling_is_std_y(tiling));
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/* Note that neither the surface's horizontal nor vertical image alignment
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* is programmable on gen4 nor gen5.
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*
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* From the G35 PRM (2008-01), Volume 1 Graphics Core, Section 6.17.3.4
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* Alignment Unit Size:
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*
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* Note that the compressed formats are padded to a full compression
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* cell.
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*
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* +------------------------+--------+--------+
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* | format | halign | valign |
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* +------------------------+--------+--------+
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* | YUV 4:2:2 formats | 4 | 2 |
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* | uncompressed formats | 4 | 2 |
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* +------------------------+--------+--------+
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*/
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if (isl_format_is_compressed(info->format)) {
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*image_align_el = isl_extent3d(1, 1, 1);
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return;
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}
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*image_align_el = isl_extent3d(4, 2, 1);
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}
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