bda43a0f59
Rename legacy Y tiling from ISL_TILING_Y to ISL_TILING_Y0 in order to clearly distinguish it from Yf and Ys. Using ISL_TILING_Y to denote legacy Y tiling would lead to confusion with i965, because i965 uses I195_TILE_Y to denote *any* Y tiling.
92 lines
2.6 KiB
C
92 lines
2.6 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 <assert.h>
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#include "mesa/main/imports.h"
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#include "isl.h"
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/**
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* Log base 2, rounding towards zero.
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*/
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static inline uint32_t
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isl_log2u(uint32_t n)
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{
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assert(n != 0);
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return 31 - __builtin_clz(n);
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}
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void
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isl_device_init(struct isl_device *dev,
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const struct brw_device_info *info)
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{
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dev->info = info;
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}
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/**
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* The returned extent's units are (width=bytes, height=rows).
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*/
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void
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isl_tiling_get_extent(const struct isl_device *dev,
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enum isl_tiling tiling,
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uint32_t cpp,
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struct isl_extent2d *e)
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{
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static const struct isl_extent2d legacy_extents[] = {
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[ISL_TILING_LINEAR] = { 1, 1 },
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[ISL_TILING_X] = { 512, 8 },
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[ISL_TILING_Y0] = { 128, 32 },
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[ISL_TILING_W] = { 128, 32 },
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};
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static const struct isl_extent2d yf_extents[] = {
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/*cpp*/
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/* 1*/ [0] = { 64, 64 },
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/* 2*/ [1] = { 128, 32 },
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/* 4*/ [2] = { 128, 32 },
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/* 8*/ [3] = { 256, 16 },
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/*16*/ [4] = { 256, 16 },
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};
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assert(cpp > 0);
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switch (tiling) {
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case ISL_TILING_LINEAR:
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case ISL_TILING_X:
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case ISL_TILING_Y0:
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case ISL_TILING_W:
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*e = legacy_extents[tiling];
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return;
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case ISL_TILING_Yf:
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case ISL_TILING_Ys:
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assert(_mesa_is_pow_two(cpp));
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*e = yf_extents[isl_log2u(cpp)];
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if (tiling == ISL_TILING_Ys) {
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e->width *= 4;
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e->height *= 4;
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}
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return;
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}
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}
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