src/vulkan/isl_priv.h

   1 /*
   2  * Copyright 2015 Intel Corporation
   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
  20  *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  *  IN THE SOFTWARE.
  22  */
  23
  24 #pragma once
  25
  26 #include <assert.h>
  27
  28 #include "brw_device_info.h"
  29 #include "mesa/main/imports.h"
  30 #include "util/macros.h"
  31
  32 #include "isl.h"
  33
  34 #define isl_finishme(format, ...) \
  35    __isl_finishme(__FILE__, __LINE__, format, ##__VA_ARGS__)
  36
  37 void PRINTFLIKE(3, 4) UNUSED
  38 __isl_finishme(const char *file, int line, const char *fmt, ...);
  39
  40 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  41 #define MAX(a, b) ((a) > (b) ? (a) : (b))
  42
  43 static inline uint32_t
  44 ffs(uint32_t n) {
  45    return __builtin_ffs(n);
  46 }
  47
  48 static inline bool
  49 isl_is_pow2(uintmax_t n)
  50 {
  51    return !(n & (n - 1));
  52 }
  53
  54 /**
  55  * Alignment must be a power of 2.
  56  */
  57 static inline bool
  58 isl_is_aligned(uintmax_t n, uintmax_t a)
  59 {
  60    assert(isl_is_pow2(a));
  61    return (n & (a - 1)) == 0;
  62 }
  63
  64 /**
  65  * Alignment must be a power of 2.
  66  */
  67 static inline uintmax_t
  68 isl_align(uintmax_t n, uintmax_t a)
  69 {
  70    assert(isl_is_pow2(a));
  71    return (n + a - 1) & ~(a - 1);
  72 }
  73
  74 static inline uintmax_t
  75 isl_align_npot(uintmax_t n, uintmax_t a)
  76 {
  77    assert(a > 0);
  78    return ((n + a - 1) / a) * a;
  79 }
  80
  81 /**
  82  * Alignment must be a power of 2.
  83  */
  84 static inline uintmax_t
  85 isl_align_div(uintmax_t n, uintmax_t a)
  86 {
  87    return isl_align(n, a) / a;
  88 }
  89
  90 static inline uintmax_t
  91 isl_align_div_npot(uintmax_t n, uintmax_t a)
  92 {
  93    return isl_align_npot(n, a) / a;
  94 }
  95
  96 /**
  97  * Log base 2, rounding towards zero.
  98  */
  99 static inline uint32_t
 100 isl_log2u(uint32_t n)
 101 {
 102    assert(n != 0);
 103    return 31 - __builtin_clz(n);
 104 }
 105
 106 static inline uint32_t
 107 isl_minify(uint32_t n, uint32_t levels)
 108 {
 109    if (unlikely(n == 0))
 110       return 0;
 111    else
 112       return MAX(n >> levels, 1);
 113 }
 114
 115 static inline struct isl_extent3d
 116 isl_extent3d_sa_to_el(enum isl_format fmt, struct isl_extent3d extent_sa)
 117 {
 118    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
 119
 120    assert(extent_sa.w % fmtl->bw == 0);
 121    assert(extent_sa.h % fmtl->bh == 0);
 122    assert(extent_sa.d % fmtl->bd == 0);
 123
 124    return (struct isl_extent3d) {
 125       .w = extent_sa.w / fmtl->bw,
 126       .h = extent_sa.h / fmtl->bh,
 127       .d = extent_sa.d / fmtl->bd,
 128    };
 129 }
 130
 131 static inline struct isl_extent3d
 132 isl_extent3d_el_to_sa(enum isl_format fmt, struct isl_extent3d extent_el)
 133 {
 134    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
 135
 136    return (struct isl_extent3d) {
 137       .w = extent_el.w * fmtl->bw,
 138       .h = extent_el.h * fmtl->bh,
 139       .d = extent_el.d * fmtl->bd,
 140    };
 141 }